Product catalog

One-way fan coil cassettes with AC fan motor technology - model CFAS
One-way fan coil cassettes with EC fan motor technology - model CFAE
Sizes 16-26-36

UNT-PRC017-E4
 Contents

Introduction 3
Model number 5
Dimensions 6
General data 10
Sound spectrum 15
Water pressure drop 16
Options 18
Standalone controls 26
Group controls 32
Building Management Controls 36
Accessories 37

2 UNT-PRC017-E4
 Introduction

Introduction Main components

The CFAS cassette fan coil is specifically
designed for applications in office buildings Intake grille
from 10 to 40 m². It is equipped with It is made of galvanized painted steel
an innovative discharge and return air louvers which allow 100% air opening
plenum casing capable to generate an air through the filter such providing the
distribution throw with a perfect Coanda maximum efficiency to the filter. The
effect. The unit is a one-piece design louvers are oriented backwards avoiding
perfectly suitable for installation in false any recycling with the supply air providing
ceilings or suffit installations. also a full white appearance of the fascia for
The return air side enters into the unit occupant’s sight.
vertically from the bottom through a linear
grille designed to avoid seeing the filter Air supply diffusers
through the openings and to maximize Made of polypropylene plastic, the
the air filtration efficiency which is a great innovative computer-made design ø170 mm
progress versus conventional perforated and the quantity maximize the air diffusion
grilles. The air diffusion goes parallel to horizontally to the ceiling with a perfect
the ceiling through an optimized number Coanda effect that make the air to follow
of adjustable round diffusers specifically along the ceiling tiles and come back to
designed to keep enough air velocity at the return air grille through a large room
the low speed and to avoid high velocity at volume.
higher speed.
The product is available for 2-pipe and Casing
4-pipe applications with standard and high Made of 1 mm galvanized steel with inside
efficiency coils for both the cooling and thermal insulation, expanded polyethylene
the heating mode which is very beneficial closed cells 6 mm thickness with an outside
to the efficiency of system working with anti-condensation lining.
heat pump chillers. Many factory-mounted
options are available to save time during Air filter
unit installation, such as electric heaters,
The return air plenum is designed to
water valves and actuators, G0 or EU3 filter,
maximize the filtering capability of the
condensate water pump.
unit with a large filter dimension and with
A raised version is available to increase the a return air grille considered as being
condensate drain outlet from 100 mm to 100% open which frees up the full filter
160 mm thus avoiding use of a condensate face area and therefore increases the time
pump. between maintenance checks. The filtering
Several accessories are provided for field performance is greatly improved versus
installation: water sensors, external drain a perforated grille which has only 60%
pan for water valves, fresh air constant opening in general. Two filtering quality
volume dampers with 100 mm and 125 mm options are available from factory: G0 and
round spigots. EU3.

There are 3 levels of control proposed, for Fan assembly

standalone, group control and Building
Management System applications. An Made of centrifugal fans with double
infrared remote controller mounted on site is suction side. The assembly is very quiet.
available for group control system for which The impellers are made of aluminum and
up to 20 units can be connected together. are statically and dynamically balanced and
directly mounted onto the motor shaft.
A wall-mounted thermostat with LCD display
is also available for group control of up to
60 units.

UNT-PRC017-E4 3
 Introduction

EC fan motor technology Heat exchanger

Fans represent a major part of energy The cooling and heating coils are made
consumption in air conditioning systems; of copper tubes and aluminum fins which
the CFAE one-way cassette fan coil features are bonded onto the tubes for maximum
an EC motor defined as a brushless direct transfer contact. The water coil connections
current commutation of motor windings by are ½” gas female and equipped with 1/8”
means of electronic controls. It has a full vent air purge. The maximum operating
load efficiency above 80% which is twice pressure is 10 bar or 1000 kPa.
the one of a standard AC motor and thus
throughout the operating range. Overall, Drain pan
EC motor draws an average of 4 times less It is made of ABS plastic with 3 mm
in watt, providing up to 67% reduction to polyethylene foam external insulation such
the annual electricity bills on the terminals. providing no risk of corrosion. It is easily
The motor is made of a 3 phase permanent washable. For units with an electric heater,
magnet motor controlled via an inverter the condensate tray is made of 1 mm-thick
board suitable for power supply single phase painted galvanized steel with 3 mm of
230-240 V, 50 and 60 Hz. It is thermal polyethylene insulation.
protected and as a protection class B
and IP20.

AC fan motor technology

Alternatively, the CFAS one-way cassette
fan coil features an AC fan motor with
6 equidistant speeds of which 3 are
connected providing good flexibility to best
suit the airflow needs based on the required
external static pressure. It is mounted on
anti-vibration supports and works with a
permanent capacitor. It is protected with an
internal auto reset overheat thermostat, it
has an IP20 protection class and a class B
insulation.

Typical fan motor loads of an office building in Paris

Watt.hours

9 000 Energy Savings

8 000
7 000 AC motor Watt.hour

6 000 AC
EC motor Watt.hour
5 000
4 000 67%
3 000 energy savings

2 000
1 000 EC
0

Low Medium High

Fan speed / airflow requirements

4 UNT-PRC017-E4
 Model number

Table 1

DIGIT Description
1 Unit type C = Cassette
2 Unit type F = Fan Coil
3 Major Design Sequence A=A
4 Motor Type S = AC fan motor
E = EC fan motor
5+6 Unit size 16 = 1.6 kW at speed 5 total capacity
26 = 2.6 kW at speed 5 total capacity
36 = 3.6 kW at speed 5 total capacity
7 Application A = 2-pipe cooling only
B = 2-pipe heating only (on request)
C = 2-pipe changeover
D = 4-pipe
8 Coil size 3 = Standard 3 rows
4 = High efficiency 4 rows
5 = High efficiency heating 3 rows plus 2 rows
9 Minor Design Sequence B
10 Water valves and controls access sides G = Water valves on the left, controls on the right
D = Water valves on the right, controls on the left
11 Raise X = Standard / drain outlet height 100 mm from ceiling
R = Raised / drain outlet height 160 mm from ceiling
12 Filter X = Standard G0
3 = EU3
13 Electric heater(1) X = Without
1 = 350 W - size 16
2 = 550 W - size 16
3 = 700 W - size 26
4 = 1150 W - size 26
5 = 900 W - size 36
6 = 1400 W - size 36
14 Controls type X = Without for wall mount thermostat interface or customer field-mounted controls
A = Group control Modbus for wall-mounted thermostat or infrared controller
B = ZN Zone for wall-mounted thermostat or return air control
C = ZN Cascade for wall-mounted thermostat or return + supply air control
D = Free issued control
15 Free issued control factory-mounted W = Large empty control box
X = Without
16 Valve type X = Without
A = 2-way thermal On/Off
B = 3-way thermal On/Off
C = 2-way modulating 3 points
D = 3-way modulating 3 points
17 Condensate pump X = Without
A = Mounted
18 Fan speed selection 1 = Standard 1-2-4 (refer to table page 18)
2 = Up 2-4-5 (refer to table page 18)
19 Special X = Without
S = With
(1)
Electric heater sizes 1 and 2 correspond to fan coil size 16.
Electric heater sizes 3 and 4 correspond to fan coil size 26.
Eledtric heater sizes 5 and 6 correspond to fan coil size 36.

UNT-PRC017-E4 5
 Dimensions

SIZE 16 SIZE 26

SIZE 36

Standard height version

Dimensions (mm)
Unit size A E F
16 592 454 78
26 970 884 43
36 1192 1099 46.5

6 UNT-PRC017-E4
 Dimensions

Raised height version

Dimensions (mm)
Unit size A E F
16 592 454 78
26 970 884 43
36 1192 1099 46.5

Access clearances (mm)

UNT-PRC017-E4 7
 Dimensions

Standard height version

30 Min
306
Raised height version

30 Min
366

Packaging
Standard height/raised height version

A
B

Unit size 16 Std 16 Raised 26 Std 26 Raised 36 Std 36 Raised

A 720 720 1130 1130 1350 1350
B 640 640 640 640 640 640
C 350 410 350 410 350 410

8 UNT-PRC017-E4
 Dimensions

Weights Gross weight with packaging (kg) Net weight (kg)

Size 16 26 36 16 26 36
3 row 2 pipe 18 34 44 16 33 42
3+1 row 4 pipe 20 40 51 19 38 48
3+2 row 4 pipe 23 46 58 22 43 54
4 row 2 pipe 20 37 48 18 35 45
4+1 row 4 pipe 23 42 54 21 40 51

Water Volume (l)

Size 16 26 36
3 row main coil 0.6 1.3 1.7
4 row main coil 0.8 1.7 2.4
+1 heating coil 0.2 0.4 0.5
+2 heating coil 0.4 0.8 1.0

Row Coil quantity

2 pipe 3 4 - 1
4 pipe 3+1 4+1 3+2 2*

* 4 pipe units have 2 coils. The main coil for cooling has the same cooling performance as the
2 pipe coil for the same number of rows. The additional coil (+1 or +2) is the heating coil with 1 or
2 rows.

Note: The 2 row heating coil provides higher heating performance and is designed to provide
higher heating capacities for utilization with heat pump chillers, providing lower hot water
temperatures than boilers.

UNT-PRC017-E4 9
 General data

2-pipe units
The following standard rating conditions are used:

COOLING
Entering air temperature +27°C d.b. +19°C w.b.
Water temperature +7/12°C

HEATING
Entering air temperature +20°C
Entering water temperature +50°C
water flow rate as for the cooling conditions
Table 2 - CFAS standard efficiency 3 row
16 26 36

Speed Standard 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6

Speed Up 2-4-5 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6

Air Flow m3/h 140 180 220 245 280 310 190 230 290 360 445 530 275 335 420 505 600 650

Cooling total emission kW 0.88 1.06 1.26 1.35 1.50 1.60 1.37 1.62 1.97 2.37 2.81 3.23 1.97 2.37 2.84 3.34 3.75 4.05

Cooling sensible emission kW 0.66 0.81 0.98 1.06 1.18 1.27 1 1.19 1.47 1.77 2.13 2.47 1.44 1.74 2.11 2.51 2.83 3.07

Heating kW 1.08 1.33 1.59 1.73 1.93 2.08 1.6 1.91 2.35 2.86 3.43 3.95 2.30 2.79 3.37 4.02 4.53 4.88

∆P Cooling kPa 2.4 3.3 4.5 5.1 6.1 6.8 2.9 3.9 5.5 7.6 10.3 13.1 6.4 8.8 12.1 16.2 19.8 22.7

∆P Heating kPa 1.8 2.6 3.5 4.0 4.9 5.6 2.3 3.1 4.5 6.3 8.4 10.8 5.2 7.3 9.8 13.4 16.3 18.6

Power consumption W 16 22 32 38 49 66 24 27 34 44 57 71 38 46 57 69 78 88

Fan amps A 0.07 0.10 0.14 0.17 0.22 0.30 0.11 0.12 0.15 0.20 0.26 0.32 0.12 0.15 0.19 0.27 0.33 0.38

Sound Power level dB(A) 35 41 46 49 52 55 33 36 42 48 54 57 35 41 46 52 55 57

Sound Pressure level dB(A) 26 32 37 40 43 46 24 27 33 39 45 48 26 32 37 43 46 48

NR level dB(A) 22 27 31 34 38 41 17 18 25 33 40 43 17 24 30 37 40 42

NC level dB(A) 20 25 30 33 36 39 15 16 23 31 38 41 15 22 28 35 38 41

Dimension (LxWxH) mm 592x592x309 970x592x310 1192x592x311

Coil water content l 0.6 1.3 1.7

Table 3 - CFAE standard efficiency 3 row

16 26 36

Speed 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5

Control Input voltage V 1 3 5 7.5 10 1 3 5 7.5 10 1 3 5 7.5 10

Selected speeds Min Med Max Min Med Max Min Med Max

Air Flow m /h
3
130 165 205 250 295 215 295 370 450 540 275 345 430 525 620

Cooling total emission kW 0.82 1 1.18 1.37 1.56 1.46 1.92 2.31 2.74 3.16 1.87 2.31 2.78 3.28 3.75

Cooling sensible emission kW 0.62 0.76 0.91 1.07 1.24 1.07 1.42 1.73 2.07 2.41 1.37 1.7 2.06 2.45 2.83

Heating kW 1.02 1.25 1.5 1.75 2.02 1.72 2.28 2.79 3.33 3.85 2.19 2.72 3.3 3.93 4.54

∆P Cooling kPa 2.1 3 4 5.2 6.5 3.2 5.2 7.3 9.8 12.6 5.8 8.4 11.7 15.7 19.8

∆P Heating kPa 1.7 2.4 3.3 4.3 5.3 2.6 4.2 6 8 10.4 4.7 6.9 9.4 12.9 16.6

Power consumption W 8 11 14 21 29 8 11 16 24 37 10 13 19 29 42

Fan amps 0.04 0.05 0.07 0.1 0.14 0.04 0.05 0.08 0.12 0.18 0.05 0.06 0.09 0.14 0.2

Sound Power level dB(A) 35 41 46 51 55 34 40 46 52 56 36 42 48 54 58

Sound Pressure level dB(A) 26 32 37 42 46 25 31 37 43 47 27 33 39 45 49

NR level dB(A) 22 27 32 37 41 18 22 30 37 42 18 25 33 39 44

NC level dB(A) 21 26 30 35 39 17 21 28 35 40 16 24 31 38 42

Dimension (LxWxH) mm 592x592x309 970x592x310 1192x592x311

Coil water content l 0.6 1.3 1.7

10 UNT-PRC017-E4
 General data

Table 4 - CFAS high efficiency 4 row

16 26 36

Speed Standard 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6

Speed Up 2-4-5 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6

Air Flow m3/h 140 180 220 245 280 310 190 230 290 360 445 530 275 335 420 505 600 650

Cooling total emission kW 0.97 1.19 1.44 1.55 1.74 1.87 1.44 1.72 2.12 2.57 3.09 3.58 2.05 2.49 3.00 3.56 4.02 4.36

Cooling sensible emission kW 0.71 0.88 1.07 1.17 1.31 1.42 1.04 1.24 1.54 1.88 2.28 2.67 1.48 1.81 2.20 2.63 2.98 3.25

Heating kW 1.14 1.42 1.72 1.88 2.10 2.27 1.69 2.03 2.54 3.12 3.79 4.44 2.38 2.90 3.51 4.20 4.77 5.20

∆P Cooling kPa 4.7 6.7 9.2 10.6 12.9 14.6 4.4 6.0 8.6 12.1 16.8 21.7 4.7 6.7 9.3 12.6 15.5 17.9

∆P Heating kPa 3.7 5.4 7.6 8.8 10.7 12.3 3.5 4.8 7.1 10.2 13.6 17.9 3.9 5.5 7.3 10.0 12.6 14.6

Power consumption W 16 22 32 38 49 66 24 27 34 44 57 71 38 46 57 69 78 88

Fan amps A 0.07 0.10 0.14 0.17 0.22 0.30 0.11 0.12 0.15 0.20 0.26 0.32 0.12 0.15 0.19 0.27 0.33 0.38

Sound Power level dB(A) 35 41 46 49 52 55 33 36 42 48 54 57 35 41 46 52 55 57

Sound Pressure level dB(A) 26 32 37 40 43 46 24 27 33 39 45 48 26 32 37 43 46 48

NR level dB(A) 22 27 31 34 38 41 17 18 25 33 40 43 17 24 30 37 40 42

NC level dB(A) 20 25 30 33 36 39 15 16 23 31 38 41 15 22 28 35 38 41

Dimension (LxWxH) mm 592x592x309 970x592x310 1192x592x311

Coil water content l 0.8 1.7 2.4

Table 5 - CFAE high efficiency 4 row

16 26 36

Speed 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5

Control Input voltage V 1 3 5 7.5 10 1 3 5 7.5 10 1 3 5 7.5 10

Selected speeds Min Med Max Min Med Max Min Med Max

Air Flow m3/h 130 165 205 250 295 215 295 370 450 540 275 345 430 525 620

Cooling total emission kW 0.91 1.12 1.34 1.58 1.81 1.55 2.06 2.51 3 3.5 1.95 2.42 2.94 3.49 4.02

Cooling sensible emission kW 0.66 0.82 0.99 1.18 1.38 1.11 1.49 1.84 2.21 2.6 1.41 1.76 2.15 2.57 2.98

Heating kW 1.07 1.32 1.6 1.9 2.2 1.82 2.46 3.03 3.68 4.32 2.25 2.82 3.44 4.12 4.78

∆P Cooling kPa 4.1 5.9 8.1 10.9 13.9 5 8.2 11.6 15.9 20.8 4.3 6.4 8.9 12.1 15.5

∆P Heating kPa 3.3 4.8 6.6 9 11.6 4.1 6.7 9.4 13.2 17.1 3.5 5.2 7.4 10 13

Power consumption W 8 11 14 21 29 8 11 16 24 37 10 13 19 29 42

Sound Power level dB(A) 35 41 46 51 55 34 40 46 52 56 36 42 48 54 58

Sound Pressure level dB(A) 26 32 37 42 46 25 31 37 43 47 27 33 39 45 49

NR level dB(A) 22 27 32 37 41 18 22 30 37 42 18 25 33 39 44

NC level dB(A) 21 26 30 35 39 17 21 28 35 40 16 24 31 38 42

Dimension (LxWxH) mm 592x592x309 970x592x310 1192x592x311

Coil water content l 0.8 1.7 2.4

UNT-PRC017-E4 11
 General data

4-pipe units 3+1

The following standard rating conditions are used:

COOLING
Entering air temperature +27°C d.b. +19°C w.b.
Water temperature +7/12°C

HEATING
Entering air temperature +20°C
Water temperature: +70/60°C

Table 6 - CFAS standard efficiency 3 + 1 row

CFAS standard efficiency 16 26 36

Speed 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6

Selected speeds 6 5 4 3 2 1 6 5 4 3 2 1 6 5 4 3 2 1

Air Flow m3/h 140 180 220 245 280 310 190 230 290 360 445 530 275 335 420 505 600 650

Cooling total emission kW 0.88 1.06 1.26 1.35 1.50 1.60 1.37 1.62 1.97 2.37 2.81 3.23 1.97 2.37 2.84 3.34 3.75 4.05

Cooling sensible emission kW 0.66 0.81 0.98 1.06 1.18 1.27 1 1.19 1.47 1.77 2.13 2.47 1.44 1.74 2.11 2.51 2.83 3.07

Heating kW 0.92 1.08 1.25 1.34 1.47 1.56 1.49 1.71 2.02 2.35 2.73 3.07 2.12 2.47 2.87 3.30 3.64 3.89

∆P Cooling kPa 2.4 3.3 4.5 5.1 6.1 6.8 2.9 3.9 5.5 7.6 10.3 13.1 6.4 8.8 12.1 16.2 19.8 22.7

∆P Heating kPa 1.6 2.1 2.7 3.1 3.6 4.0 0.9 1.2 1.6 2 2.6 3.2 2.0 2.6 3.4 4.3 5.1 5.8

Power consumption W 16 22 32 38 49 66 24 27 34 44 57 71 38 46 57 69 78 88

Fan amps A 0.07 0.10 0.14 0.17 0.22 0.30 0.11 0.12 0.15 0.20 0.26 0.32 0.12 0.15 0.19 0.27 0.33 0.38

Sound Power level dB(A) 35 41 46 49 52 55 33 36 42 48 54 57 35 41 46 52 55 57

Sound Pressure level dB(A) 26 32 37 40 43 46 24 27 33 39 45 48 26 32 37 43 46 48

NR level dB(A) 22 27 31 34 38 41 17 18 25 33 40 43 17 24 30 37 40 42

NC level dB(A) 20 25 30 33 36 39 15 16 23 31 38 41 15 22 28 35 38 41

Dimension (LxWxH) mm 592x592x309 970x592x310 1192x592x311

Coil water content l 0.6 1.3 1.7

Coil water content heating l 0.2 0.4 0.5

Table 7 - CFAE standard efficiency 3+1 row

16 26 36

Speed 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5

Control Input voltage V 1 3 5 7.5 10 1 3 5 7.5 10 1 3 5 7.5 10

Selected speeds Min Med Max Min Med Max Min Med Max

Air Flow m3/h 130 165 205 250 295 215 295 370 450 540 275 345 430 525 620

Cooling total emission kW 0.82 1 1.18 1.37 1.56 1.46 1.92 2.31 2.74 3.16 1.87 2.31 2.78 3.28 3.75

Cooling sensible emission kW 0.62 0.76 0.91 1.07 1.24 1.07 1.42 1.73 2.07 2.41 1.37 1.7 2.06 2.45 2.83

Heating kW 0.87 1.03 1.18 1.35 1.52 1.58 1.97 2.31 2.66 3.01 2.04 2.42 2.82 3.24 3.64

∆P Cooling kPa 2.1 3 4 5.2 6.5 3.2 5.2 7.3 9.8 12.6 5.8 8.4 11.7 15.7 19.8

∆P Heating kPa 1.4 1.9 2.5 3.1 3.8 1 1.5 2 2.5 3.1 1.8 2.5 3.3 4.2 5.1

Power consumption W 8 11 14 21 29 8 11 16 24 37 10 13 19 29 42

Sound Power level dB(A) 35 41 46 51 55 34 40 46 52 56 36 42 48 54 58

Sound Pressure level dB(A) 26 32 37 42 46 25 31 37 43 47 27 33 39 45 49

NR level dB(A) 22 27 32 37 41 18 22 30 37 42 18 25 33 39 44

NC level dB(A) 21 26 30 35 39 17 21 28 35 40 16 24 31 38 42

Dimension (LxWxH) mm 592x592x309 970x592x310 1192x592x311

Coil water content l 0.6 1.3 1.7

Coil water content heating l 0.2 0.4 0.5

12 UNT-PRC017-E4
 General data

4 pipe units 3+2

The following standard rating conditions are used:

COOLING
Entering air temperature +27°C d.b. +19°C w.b.
Water temperature +7/12°C

HEATING
Entering air temperature +20°C
Water temperature: +60/50°C

Table 8
CFAS high efficiency heating 16 26 36
coil

Speed 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6

Selected speeds 6 5 4 3 2 1 6 5 4 3 2 1 6 5 4 3 2 1

Air Flow m3/h 140 180 220 245 280 310 190 230 290 360 445 530 275 335 420 505 600 650

Cooling total emission kW 0.88 1.06 1.26 1.35 1.50 1.60 1.37 1.62 1.97 2.37 2.81 3.23 1.97 2.37 2.84 3.34 3.75 4.05

Cooling sensible emission kW 0.66 0.81 0.98 1.06 1.18 1.27 1 1.19 1.47 1.77 2.13 2.47 1.44 1.74 2.11 2.51 2.83 3.07

Heating kW 1.16 1.38 1.63 1.75 1.92 2.05 1.79 2.11 2.55 3 3.53 4.03 2.57 3.07 3.65 4.22 4.70 5.06

∆P Cooling kPa 2.4 3.3 4.5 5.1 6.1 6.8 2.9 3.9 5.5 7.6 10.3 13.1 6.4 8.8 12.1 16.2 19.8 22.7

∆P Heating kPa 4.5 6.0 8.1 9.1 10.8 12.2 2.4 3.2 4.5 6 8 10 5.4 7.4 10.0 12.9 15.6 17.8

Power consumption W 16 22 32 38 49 66 24 27 34 44 57 71 38 46 57 69 78 88

Fan amps A 0.07 0.10 0.14 0.17 0.22 0.30 0.11 0.12 0.15 0.20 0.26 0.32 0.12 0.15 0.19 0.27 0.33 0.38

Sound Power level dB(A) 35 41 46 49 52 55 33 36 42 48 54 57 35 41 46 52 55 57

Sound Pressure level dB(A) 26 32 37 40 43 46 24 27 33 39 45 48 26 32 37 43 46 48

NR level dB(A) 22 27 31 34 38 41 17 18 25 33 40 43 17 24 30 37 40 42

NC level dB(A) 20 25 30 33 36 39 15 16 23 31 38 41 15 22 28 35 38 41

Dimension (LxWxH) mm 592x592x309 970x592x310 1192x592x311

Coil water content cooling l 0.6 1.3 1.7

Coil water content heating l 0.4 0.8 1.0

Correction factor for cooling capacities and relative humidity

Total capacity

Water (°C) Air (°C) 25-18 26-18.5 28-20

7/12 °C K 0.82 0.89 1.11

10/15 °C K 0.56 0.63 0.82

14/18 °C K 0.35 0.41 0.52

Sensible capacity

Water (°C) Air (°C) 25-18 26-18.5 28-20

7/12 °C K 0.90 0.94 1.06

10/15 °C K 0.72 0.78 0.90

14/18 °C K 0.50 0.58 0.72

To be used based on Eurovent cooling rating conditions 27°C/19°C and 50% RH ambient temperature and 12/7°C cooling water
temperatures.

UNT-PRC017-E4 13
 General data

Operating limits
Maximum entering water temperature: +80°C.
Minimum water temperature without glycol: +5°C.
For lower water temperatures please contact your local sales office.
Maximum water operating pressure: 1000 kPa (10 bars).
Water flow cooling coil
Size 16 26 36
Minimum 100 150 150
3-row
Maximum 500 1000 1500
Minimum 100 150 200
4-row
Maximum 750 1000 2000

Water flow heating coil

Size 16 26 36
Minimum 50 100 100
+1
Maximum 250 450 650
Minimum 50 100 100
+2
Maximum 250 450 650

Electrical motor
maximum power
input AC fan motor 16 26 36
W 66 71 84
A 0.30 0.32 0.38
230/1/50
EC fan motor
W 29 37 42

Air throw distances

A = Heating
B = Cooling

16 26 36
Speed 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
Throw (L) Heating 3.8 4.5 5.8 6.3 6.8 7.2 4.0 5.0 6.1 7.0 8.0 9.0 4.5 5.2 6.3 7.5 8.8 9.5
(m) Cooling 3.0 3.6 4.6 5.0 5.4 5.7 3.2 4.0 4.8 5.6 6.0 7.2 3.6 4.1 5.0 6.0 7.0 7.6

14 UNT-PRC017-E4
 Sound spectrum

Table 9 - CFAS
Sound Power level Frequency octave band LWA Sound Pressure

Speed m3/h 125 250 500 1000 2000 4000 8000 Glob (*) Lp (*) NC NR NC

1 105 18.3 29.1 28.2 31 24.3 18.1 15.1 35.0 26 22 22 20

2 125 24.5 34.3 36.6 35.8 29.5 22.4 16.5 41.0 32 28 27 25

3 150 29.1 38.8 42 40.4 35.8 28.7 19.5 46.0 37 33 31 30

16
4 175 31.8 41.4 44.9 43.5 39.4 32.3 22.2 49.0 40 36 34 33

5 195 34.7 44 47.7 46.6 43.3 36.9 26.8 52.0 43 39 38 36

6 220 37.7 46.9 50.4 49.7 46.8 40.7 31 55.0 46 42 41 39

1 145 27.2 27.6 25.2 21.1 21.8 19.9 18.5 32.7 24 20 17 15

2 170 30.3 30.1 29.5 25 23.4 20.8 19.2 35.7 27 23 18 16

3 220 28.1 36.7 37.4 34.1 30.6 24.8 19.5 41.7 33 29 25 23

26
4 250 33.3 40.9 43.6 41.3 38.5 29.2 21.6 47.7 39 35 33 31

5 295 38.6 46.9 49.2 48.5 45.6 36.8 25.9 54.0 45 41 40 38

6 340 41.5 48.9 52.2 51.8 49.2 41.3 29.6 57.0 48 44 43 41

1 185 24 31.3 30 24.1 20 15.2 18.3 34.9 26 22 17 15

2 235 28.9 36.5 36.7 32.9 26.3 18 18.6 40.9 32 28 24 22

3 270 32.2 40.2 41.9 39 33.1 22.8 19.2 45.8 37 33 30 28

36
4 325 37.6 45.1 47.9 45.6 40.9 31.1 22.3 51.8 43 39 37 35

5 385 40.2 47.7 50.6 48.9 45.3 36.4 26.5 54.8 46 42 40 38

6 440 41.6 49.1 52.3 51.2 47.8 39.6 29.7 56.7 48 44 42 41

Table 10 - CFAE
Sound Power level Frequency octave band LWA Sound Pressure

Volt Speed m /h
3
125 250 500 1000 2000 4000 8000 Glob (*) Lp (*) NC NR

1 1 130 18.3 29.1 28.2 31 24.3 18.1 15.1 35.0 26 22 21

3 2 165 24.5 34.3 36.6 35.8 29.5 22.4 16.5 41.0 32 27 26

16 5 3 205 29.1 38.8 42 40.4 35.8 28.7 19.5 46.0 37 32 30

7.5 4 250 33.8 43.1 46.9 45.5 41.4 34.3 24.2 50.9 42 37 35

10 5 295 37.7 47 50.7 49.6 46.2 39.9 29.8 55.0 46 41 39

1 1 215 28.4 28.8 26.4 22.4 23.1 21.2 19.8 34.0 25 18 17

3 2 295 34.6 34.4 33.8 29.3 27.7 25.1 23.5 40.0 31 22 21

26 5 3 370 32.4 41.0 41.7 38.4 34.9 29.1 23.8 46.0 37 30 28

7.5 4 450 37.6 45.2 47.9 45.6 42.8 33.5 25.9 52.0 43 37 35

10 5 540 40.6 48.9 51.2 50.5 47.6 38.8 27.9 56.0 47 42 40

1 1 275 25.1 32.4 31.1 25.2 21.1 16.3 19.4 36.0 27 18 16

3 2 345 30.0 37.6 37.8 34.0 27.4 19.1 19.7 42.0 33 25 24

36 5 3 430 34.4 42.4 44.1 41.2 35.3 25.0 21.4 48.0 39 33 31

7.5 4 525 39.8 47.3 50.1 47.8 43.1 33.3 24.5 54.0 45 39 38

10 5 620 43.4 50.9 53.8 52.1 48.5 39.6 29.7 58.0 49 44 42

(*)Note: The sound pressure levels Lp and NC are determined with the following assumptions:
- a room absorption of 9 dB(A) for a room of 100 m with a reverbering time of 0,5 sec
- units complete of filter, coil and fan sections

UNT-PRC017-E4 15
 Water pressure drop

Water pressure drop - coils

1 = 3-row coil
2 = 4-row coil
3 = Additional row +1
4 = Additional row +2

16 UNT-PRC017-E4
 Water pressure drop

Water pressure drop - valves

Qw= Water flow (l/h)

Dp= Pressure drop (kPa)

Valve type Coil Unit size DN Diameter Kvs Factory mounted

16-26 15 1/2 1.7

Cooling
2 way 36 20 3/4 2.8 Yes

Heating 16-26-36 15 1/2 1.7

16-26 15 1/2 1.6

Cooling
3 way 36 20 3/4 2.5 Yes

Heating 16-26-36 15 1/2 1.6

16-26 15 1/2 1.6

Cooling
3 way lockshield(1) 36 20 3/4 2.5 No

Heating 16-26-36 15 1/2 1.6

(1)
Available only as an accessory for field mounting

UNT-PRC017-E4 17
 Options

Options
Access side configuration
The unit can be delivered with the water valve package on the right or left hand side. The
control box is always mounted on the opposite side of the water valve package. There are 2
precut circles in the sheet metal for fresh air intake, one each side of the unit. The one to be
used is opposite side of the control box, same side as the water valve package.

Electrical
Electrical
connections side
connections
side

Water
Water connections
side
connections
side

Raised height version

These models are specifically designed for installation where gravity condensate drainage is a
priority. The unit plenum height is increase by 60 mm such the drain outlet connection is 160
mm above the false ceiling structure.

Fan speed (AC fan motor)

All unit models have a 6 fan speed motor, 3 of which are connected in the factory. There are
2 possibilities for factory default speed setting (standard and “up 2-4-5”). The fan speed
selection can be changed on site by moving the speed wire from the quick connect terminal
strip to the ones on the motor auto-transformer. The access is completed easily through the
return air access door.

Fan speed (EC fan motor)

The fan speed varies in function of the control input voltage from 1 to 10 volts direct current.

Selection table - CFAS

Unit size 16 26 36
Row Speed 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
Standard 1-2-4 x x x x x x x x x
3
Up 2-4-5 x x x x x x x x x
Standard 1-2-4 x x x x x x x x x
4
Up 2-4-5 x x x x x x x x x
Standard 1-2-4 x x x x x x x x x
3+1
Up 2-4-5 x x x x x x x x x
Standard 1-2-4 x x x x x x x x x
4+1
Up 2-4-5 x x x x x x x x x
Standard 1-2-4 x x x x x x x x x
3+2
Up 2-4-5 x x x x x x x x x

18 UNT-PRC017-E4
 Options

Filter
Two options available easy removable
without any tool, the standard version
is classified G0 made of polypropylene
honeycomb design. It is washable. A
factory-mounted optional filter class EU3
made of 8 mm thick polyester media
mounted on a metallic frame is also available

Water valve cooling and heating

2-way and 3-way water valves for the
cooling and heating coil are available
factory-mounted with all control options.
Water valves are delivered with thermal
actuator using hot wax motor. There is also
a modulating water valve actuator available
with the Trane Tracer ZN controller for both
2 and 4-pipe applications. When configured
in cascade control it will limit in cooling
mode the discharge air temperature to avoid
cold air drafts for a better ambient control
and improved comfort.

Water valve pressure drop data

Valve
Unit size DN Diameter (inches) Kvs
Cooling coil 16-26 15 1/2” 1.6
36 20 3/4” 2.5
Heating coil all 15 1/2” 1.6

UNT-PRC017-E4 19
 Options

Water valve location - standard height version

163
119
27
32
163
123

32
361

27
321
302
262
229

101

120
163

163 20 25

123

25
361
321
302
262

120
163

20 UNT-PRC017-E4
 Options

Water valve location - raised height version

223
179
163
27 32
123

32

361

27
321
302
262
229

160

180
223

223
20 25
183

25
361
321
302
262

180
223

UNT-PRC017-E4 21
 Options

On/off valves with hot wax actuator

In order to save time on the job site, on/off 2 way and 3 way valves are available as a pre-
assembled kits including pipes and connections.

3 Way / 4 ports 2 Way / 2 ports

M
M
II I
R R
III
V

Valve type Coil Unit size DN Accessory reference Factory mounted

16-26 15 35169809-001
Cooling
2 way 36 20 35169810-001 Yes

Heating 16-26-36 15 35169809-001

16-26 15 35169806-001
Cooling
3 way 36 20 35169807-001 Yes

Heating 16-26-36 15 35169806-001

16-26 15 35169803-001
Cooling
3 way lockshield 36 20 35169804-001 No

Heating 16-26-36 15 35169803-001

22 UNT-PRC017-E4
 Options

Electric heater Factory-mounted controls

The electric heater is made of a sealed Three types of controls are available:
bar heater inserted into an aluminum 1. Standalone applications where one
louvered radiator to deliver an optimum thermostat interface is used for each
homogeneous temperature. Models CFAS/ individual unit. The unit is equipped
CFAE 16 and 26 have an automatic reset with a terminal strip in the control box
cut-out thermostat setting to 190°C and to which the remote wall mounted
size 36 setting at 160°C directly fixed on thermostat need to be connected. There
the electric heater element. In addition there is the possibility to connect another unit
is a manual reset cut-out thermostat with a using the relay card for the fan speed
temperature setting of 80°C. control: model REL03 for thermostat
models N, P, R, T and REL02 for
All units with electric heater have a
thermostat model U for the AC fan motor
galvanized painted drain pan such avoiding
unit type. For the EC fan motor unit
damage to the unit in case of partial
type, the T-EC thermostat can control
or complete loss of airflow before the
up to 16 units each equipped with the
thermostat tripping is completed.
REL04 accessory card.
2. Group control where one user interface
is used for several units installed and
connected together through a serial link
Unit size 16 26 36
RS485 using a ModBus communication
Emission W 350 550 700 1150 900 1400 protocol. Up to 20 units can be
Supply V/Ph/Hz 230/1/50 connected to each other. Please refer
Amperage A 1.5 2.4 3 3.9 3.9 6.1 to the installation manual for this.
Wire gage mm² 3 x 1.5 The ambient air temperature can be
controlled via the indoor sensor installed
Condensate pump on the T-MB wall mount thermostat
interface or through the return air
The reciprocating condensate pump can be sensor of each individual unit. There is
factory mounted. It is very quiet and doesn’t also the possibility to install an infrared
affect the unit’s sound performance. The receiver with a handset transmitter field
water drainage performance depends upon installed. The ambient temperature is
elevation and pipe horizontal length. then controlled via the return air sensor
of each individual unit.
Elevation Water flow function of horizontal
(m) length and vertical elevation 3. Building Management System for
5m 10 m office building where all equipment
shall be supervised by a main control
1 6.80 6.30
system. The air ambient temperature
2 5.50 5.00 can be controlled via communicating
3 4.20 3.80 wall mounted thermostat, or equipment
return air sensor.
4 3.00 2.60
The Tracer™ ZN 523 and 525 BMS is
Note: the drain pan is delivered with the factory-configured for the customer’s
factory-mounted condensate pump.
requirements and uses ZSM10 and ZSM11
wall thermostats. Contact your Trane
controls sales engineer for more information.

UNT-PRC017-E4 23
 Control options

2 pipe 4 pipes

Only Only Changeover type(s) Water Valve(s)

Control Cool + Cool / Heat + Cool /

Installation Architecture Cool Heat Cool / Heat Hotwax 3 points
type Electric heat Electric heat Heat

Wall thermostat
N x x Manual Manual manu x
(wires)

Wall thermostat auto

P x x auto (SP) auto (SP+WT) auto (SP) x
(wires) (SP*+WT*)

x x Manual Manual Manual x

Wall thermostat
R x x External External External x
(wires)
x x Auto (WT) x
Standalone
x x Manual Manual Manual x
Wall thermostat
T x x External External External x
(wires)
x x Auto (WT) auto (SP) auto (SP) x
AC fan motor
Unit controller x x Manual Manual Manual x
+ wall LCD
U x x External External External x
thermostat
(bus) x x auto (WT) auto (SP) auto (SP) x

Unit controller x x Manual Manual Manual Manual x

+ wall
Group MB-AC thermostat x x External External External External x
control + T-MB (bus) or
infrared remote x x auto (WT) auto (SP) auto (SP+WT) auto (SP) x
controller

Unit controller
+ wall
BMS ZN523 x auto (WT) auto (SP) auto (WT) auto (SP) x x
thermostat
(bus)

Unit controller x x Manual Manual Manual x

+ wall
Standalone T-EC x x External External External x
thermostat
(bus) x x auto (WT) N/A N/A x

Unit controller x x Manual Manual Manual Manual x

+ wall
EC fan motor Group MB-EC thermostat x x External External External External x
control + T-MB (bus) or
infrared remote auto (WT) auto (SP) auto (SP+WT) auto (SP) x
controller

Unit controller
+ wall
BMS ZN525 x auto (WT) auto (SP) auto (WT) auto (SP) x x
thermostat
(bus)

SP Change over based on air temperature set point

WT Change over based on water temperature set point 15 / 25°C
RAT Return air temperature sensor
N/A Not available
LCD Liquid cell display
MHW Minimum hot water temperature control

24 UNT-PRC017-E4
 Control options

Master/slave communication Extra features

Control
Return air Time Control
Installation
Control
Architecture Accessory Type
capability
temperature MHW
Economy Window Remote
of day external
type (number overide contact on/off
sensor scheduler equipment
of units)

Wall thermostat
N Relay card REL03 wires
(wires)
10
Wall thermostat
P Relay card REL03 wires
(wires)

Wall thermostat
R Relay card REL03 wires 10 x
Standalone (wires)

Wall thermostat
T Relay card REL03 wires 10 x
(wires)
AC fan
motor Propri-
Unit controller + wall
U Relay card REL02 etary 10 x x
LCD thermostat (bus)
RS485

Unit controller + wall

Mod-
Group MB-AC thermostat (bus) Unit con-
Bus 20 x x X x x TODS ECC
control + T-MB or infrared remote troller
RS485
controller

Unit controller + wall LonTalk

BMS ZN523 ZN523 30+ x x x x
thermostat (bus) RS485

Mod-
Unit controller + wall
Standalone T-EC Relay card REL04 Bus 16 x x x
thermostat (bus)
RS485

Unit controller + wall

EC fan Mod-
Group MB-EC + thermostat (bus) Unit
motor Bus 20 x x x x x TODS ECC
control T-MB or infrared remote controller
RS485
controller

Unit controller + wall LonTalk

ZN525 ZN525 30+ x x x
thermostat (bus) RS485

MHW Minimum hot water temperature control

UNT-PRC017-E4 25
 Standalone controls

Thermostat N - AC fan motor

(Accessory 35169830-001)

CONTROL WITH ELECTROMECHANIC

THERMOSTAT

Figure 1 - Thermostat N

Main characteristics:
- On/off switch.
- Manual speed switch.
- Manual Summer/Winter switch.
- Temperature setting

Operation:
- 1-step heating
- 1-step cooling
- Controls one water valve ON-OFF for
cooling
- Controls one electric heater or one water
valve ON-OFF for heating
- Fan runs continuously regardless of water
valve operation when the thermostat is
turned ON.

26 UNT-PRC017-E4
 Standalone controls

Thermostat P - AC fan motor

ELECTROMECHANIC THERMOSTAT

AUTO CHANGEOVER + ELECTRIC

HEATER

(Accessory 35169831-001)

Figure 2 - Thermostat P

Main characteristics:
- On/off switch.
- Manual speed switch.
- Automatic Summer/Winter change-over.
- Temperature setting

Operation:
- 2-step heating
- 1-step cooling
- Controls one water valve ON-OFF for
cooling
- Controls one water valve ON-OFF for
heating
- Controls one electric heater as second
step heating
- Fan runs continuously regardless of water
valve operation when the thermostat is
turned ON.

UNT-PRC017-E4 27
 Standalone controls

Thermostat R - AC fan motor

STANDALONE CONTROL WITH
ELECTRONIC THERMOSTAT MANUAL
CHANGEOVER

(Accessory 35169833-001)

Main characteristics:
- On/off switch.
- Manual speed switch.
- Manual change mode switch.
- Temperature setting
- Water temperature sensor to avoid cold
air drafts in heating mode.

Operation:
- 1-step heating
- 1-step cooling
- Controls one water valve ON/OFF for
cooling
- Controls one water valve ON/OFF or one
electric heater for heating
- Fan runs continuously regardless of water
valve operation when the thermostat is
turned ON.
- With the water temperature sensor
accessory MHW, cold air drafts are
avoided in cases where the hot water
temperature is lower than 38°C.

28 UNT-PRC017-E4
 Standalone controls

Thermostat T - AC fan motor

CONTROL WITH ELECTRONIC
THERMOSTAT

(Accessory 35169834-001)

Main characteristics:
Same characteristics as the R control,
adding:
- Manual or automatic speed switch.
- Electronic thermostat for fan control
(on/off).
- Electronic thermostat for valve(s) control
(on/off).
- Simultaneous thermostatic control on the
valves and fan (on/off).
- It allows installation of the Summer/
Winter switch centralized and remote, or
to control it with an automatic change-
over fitted on the water pipe (for 2 pipe
installations only). The last case needs
the adjustment of the jumper on the
control board (see the instruction leaflet
supplied with the control).

UNT-PRC017-E4 29
 Standalone controls

Thermostat T-EC - EC fan Operation

- 1 step cooling for water valve control
motor On/Off
- 1 step heating for water valve or electric
Thermostat accessory 35169884-001 heater control On/Off
- Simultaneous control of the water
Relay card REL04 accessory valves / electric heater and fan operation
35169885-001 based on the difference of the room
temperature and set point
Thermostat T-EC + relay card REL04 - It allows controlling the summer / winter
accessory 35169886-001 cycle with a centralized and remote
The thermostat is connected to a unit switch or with an automatic change over
switch fitted on the water pipe
controller REL04 with 2 wires. One
- With 4 pipe installation it can be
thermostat can be used for up to 16 units
configured as an automatic change over
equipped with the REL04 control card winter / summer with a neutral dead
creating a Master/Slave configuration with band of 2°C around set point
interconnection between all REL04 control - Fan runs continuously and for auto fan
cards. mode the speed varies based on on the
Main characteristics difference of the room temperature and
- On/Off button set point
- Manual 3 speed switch or automatic
continuous speed control
- Manual winter / summer switch
- Temperature setting button
- Control up to 16 units in Master / Slave
configuration

30 UNT-PRC017-E4
 Standalone controls

Thermostat U - AC fan motor

CONTROL WITH ELECTRONIC
THERMOSTAT

(Accessory 35169835-001)

Main characteristics:
- Manual or automatic speed switch.
- Manual or automatic Summer/Winter
switch.
- Electronic thermostat for fan control
(on/off).
- Electronic thermostat for valve(s) control
(on/off).
- It allows to control the minimum water
temperature sensor (MWT).
- It allows to control the chilled water
valve (on/off) and the electric resistance
in the CWS-E version.
- It allows to control the fan and the
heating electric resistance.
- It allows to control up to 10 units with
the REL02 relay board.

Note: with 4 pipe installations and

continuous chilled and hot water supply,
it allows the automatic summer/winter
change-over in accordance to the room
temperature (-1,6°C = Winter, +1,6°C =
Summer, Dead Zone 3,2°C).

UNT-PRC017-E4 31
 Group controls

Group control via ModBus communication protocol through

RS485 serial link
The MB controller is suitable for AC and EC fan motor technology. It can be connected to one
T-MB thermostat or RT03 infrared remote controller field installed. One device can control up
to 20 units in a Master/Slave configuration with ambient temperature controlled based on
thermostat or on return air temperature sensor. When connected to the centralized time of
day scheduler TODS controller, up to 60 units can operate together on the same agenda for
7 days each operating on individual set points and fan control. For rooms where set points
and fan operation is left to occupants the MB controller can be connected to one T-MB
thermostat or RT03 infrared remote control. In this case the latest command from any of
the connected devices thermostat T-MB / RT03 or TODS is executed by the MB controller.
If more than 60 units have to be installed in the building operating under the same TODS
agenda, some terminal units serving the same zone in an open space shall be installed
without control. It will be connected to a unit with MB controller using a relay card REL03
for units with AC fan motor or in a wired daisy chain arrangement for EC fan motor but with
a limitation to 10 units in this case. The same strategy shall be used for zones where several
units shall be installed so only one user interface T-MB or RT03 is required per zone for
several units.

System configuration
More over, the TODS centralized controller is capable to pilot up to 8 external devices like a
chiller or an air handler using the external control card ECC. Each external device can provide
the state of operation to the TODS controller to provide a diagnosis about the installation.
Such the MB control using ModBus communication protocol is a powerful device than can
operate a small building in a system configuration.

Configuration and commissioning

The MB controllers are factory configured for the application. The terminal address and
operating parameters are configured on the controller using dip switches which make the
commissioning accessible to anyone reading simple instructions in the installation manual.

32 UNT-PRC017-E4
 Group controls

T-MB thermostat
(Accessory 35169876-001)
The T-MB thermostat and the Modbus The T-MB wall-mounted thermostat is used
controller suit all types of system with the Modbus controller fitted on the
applications. cassette. The Modbus controller is factory-
- 2 or 4 pipe configured for the customer’s application.
- 2-pipe with auto changeover The T-MB thermostat is configured by
- 2-step heating with electric heater default to control air ambient temperature
- Fan operation with continuous or based on the temperature sensor of the
alternate with destratification. thermostat. In the case that return air
temperature is used, it can be configured
It is connected to the factory-mounted using the dipswitch 2 in position ON during
unit controller MB and configured for the installation.
customer’s requirements. The MB controller
can be connected in a Master/Slave
configuration with up to 20 units.
J1
Exernal devices: window contact, cold air
draft protection with T3 sensor. 7
6
JP3 5
3
2
M1
1
J5
7 6 5

Master Slave Slave Slave

JUMPER
MC2

T YPE BELDEN 9841, RS-485, 1x2x24 AWG SFTP, 120 Ohm

UNT-PRC017-E4 33
 Group controls

RT03 remote control Note

(accessory 35169889-001) For more details, please refer to the infra-
The RT03 is a remote controller handset red remote control manual.
that can be fitted with the MB electronic Control operations
board as an accessory. There is a remote - Temperature set.
sensor to install on site and some - Fan speed switch with possible automatic
configuration dipswitches to turn on. It is speed selection.
possible to connect up to 20 units with - 24 hours on/off program.
a serial link RS485 for a master/slave - on/off cooling valve control.
configuration. It is recommended to install - on/off heating valve control.
the infra-red receiver on the master unit. - Control of the valves only or of the
valves and the fan together.
Figure 3 - Infra-red remote control/field- - Valve control of 2 or 4 pipe systems with
installed receiver/installation in a ceiling tile winter/summer switch on the infra-red
control.
- Valve control of 4 pipe systems with
automatic heating/cooling mode
selection with 2°C dead zone.
- Activating the COE sensor connected
F2 to the T2 contact of the board (non
RD RD
K1 active in the standard configuration),
BK BK
it works like a minimum water
GR GR temperature sensor: fitted between
BU BU the coil fins it stops the fan when the
J1
water temperature is lower than 38°C
7 and it starts the fan when the water
6 temperature reaches 42°C
JP3 5
3
2
M1
1
J5

IR
REMOTE
CONTROL

34 UNT-PRC017-E4
 Group controls

Main functions of the remote control

Figure 4 - Remote control display

1. Clock : 24 hours
2. Timer : the program switches the device on and off
3. Displays the temperature setpoint
4. Fan speed setting: 3 speed plus automatic selection
5. Operating mode: heat, cool, fan only plus and automatic mode selection.

Timer function: Operating mode:

Used to start or stop the unit over a 12 hour Used to select the desired operating
period. mode, that is, fan only, cooling, heating or
automatic mode selection.
Set display: Automatic selection allows, in 4 pipe
Used to display the temperature set point. systems, the unit to switch automatically
from heating to cooling and vice-versa
Fan speed setting: based on the ambient temperature reading
and the set point, with a dead zone of 2°K
Used to select the 3 operating speeds of
inside which the unit remains in fan only
the fan, or alternatively select automatic
mode.
control. In the latter case, the fan speed will
change automatically based on the ambient
temperature reading and the set point. The
temperature difference to switch from one
speed to the next is 0.7 °K.

UNT-PRC017-E4 35
 Building Management Controls

Intelligent LonTalk® ZN523 The intelligent control offers the following • Filter timer for preventive maintenance
benefits: • Adjustable local set point max - min
control for AC fan motor • Intelligent management of valve position limits.
The Tracer® ZN unit controller is a micro- and fan speeds. Valve is fully open • Built-in electrical protection.
processor based direct digital controller before changing the fan speed (acoustic • 2 operating modes in stand-alone
that is dedicated to the control and the comfort optimization). application: comfort and reduce.
optimization of the units. It is designed to • Control algorithms based on ambient and • After a power up in the building, units
provide improved comfort with minimum discharge air temperatures. automatically staggered from 5 to 32
energy consumption through the use of • Discharge air temperature (low and high seconds.
custom proportional integral derivative (PID) limit control). • Built-in adjustable timed override
control algorithms as well as intelligent • Automatic intelligent changeover function.
fan speed and set point control strategies. based on ambient air - entering water • Built-in condensate overflow protection.
It is factory installed, pre-commissioned temperatures differential (+/-%2.5K). • Built-in output test capability.
and tested, resulting in a highly integrated • Automatic intelligent changeover with • Built-in diagnostic indicator.
product, reduced installation and sampling function for 2-way valves use.
commissioning time.

The following configurations are supported

by the controller:
- 2-pipe cooling;
- 2-pipe cooling + electric heater; Figure 6 - Normal operating mode
- 2-pipe changeover (manual or
automatic);
- 2-pipe changeover + electric heater;
- 4-pipe.

Figure 5 - LonTalk® ZN523 control

1. Control output
2. Unoccupied heating setpoint
3. Occupied standby heating setpoint
4. Occupied heating setpoint
5. Dead band
6. Local setpoint
7. Occupied cooling setpoint
8. Occupied standby cooling setpoint
9. Unoccupied cooling setpoint
10. Temperature
For more details about the LonTalk® ZN
control, please refer to the controller’s
manual.

36 UNT-PRC017-E4
 Accessories

Accessories Water valve kits

Several water valves kits are available for
Fresh air spigot field installation. They are the same as the
Accessory 35169832-001 factory-mounted ones. The kit includes the
2 fresh air spigots with diameter 99 mm valve, the actuator and the copper piping
and 124 mm can be field installed on the for connection to valve body. Leak tightness
opposite side of the control box on the is ensured with synthetic flat joints delivered
return air side of the unit between the filter with the kit. The diameter is DN 15 for size
and the fan assembly. They are suitable 16 and 26 and DN20 for size 36 for the
for use with constant volume damper that cooling coil, and DN15 for all unit sizes for
can be fitted directly inside the spigot. It the heating coil.
is necessary to remove the precut circular They are available in 2 and 3-way models
sheet metal on site and the spigot can be and for thermal hot wax actuator only.
directly screwed to the unit using the free
See table page 22 for accessories.
holes for this. The sheet metal screw size 4
mm shall be used.
Copper connection
Accessory 35169827-001 (size 16 & 26)
Constant volume damper
35169828-001 (size 36)
Accessory 35169823-001 (30m3/h)
35169824-001 (45m3/h) This kit is used for field-installed water
3516-9825-001 (Adjustable 70-180m3/h) valves in order to have the inlet and outlet
connections distant from 40 mm suitable
The constant volume damper accurately
for any water valve type. It is delivered with
controls the air volume within a pressure
synthetic flat joints.
range of 50 to 200 Pa. Two fixed models
for 30 and 45 m3/h for spigot diameter
Filter
99 mm are available. One adjustable fresh
Accessory 35169814-001 (G0 size 16)
air volume model from 70 to 180 m3/h is
35169815-001 (G0 size 26)
available for spigot diameter 124 mm.
35169816-001 (G0 size 36)
It shall be field installed. 35169817-001 (EU3 size 16)
35169818-001 (EU3 size 26)
Auxiliary drain pan 35169819-001 (EU3 size 36)
Accessory 35169813-001 (right hand)
EU3 spare filters are available for field
35169812-001 (left hand)
installation, made of 8 mm synthetic thick
There is one model for left hand and one material class M1.
for right hand unit configurations. It shall
be installed below the water valve package
on the opposite side of the control box. It is
made of plastic material ABS UL 94-HB

Condensate pump
Accessory 35169826-001
A condensate pump kit is available for field
installation, it has the same performances
than the factory-mounted version, see
page 31.

UNT-PRC017-E4 37
 Accessories

Control accessories T-MB control (wall-mounted control)

(accessory 35169876-001)
T3 MWT Minimum Water temperature
sensor (accessory 35169838-001)
Suitable for wall thermostats R, T, and U
only (not for infra-red remote control). To be
fitted between the coil fins, it is measuring
the water temperature in the coil.
In heating mode, it stops the fan when the
water temperature is lower than 38°C and it
starts the fan when it is higher than 42°C.
It is a standard feature on unit equipped
with the group control.
The T-MB is a wall-mounted control that can
be connected to cassettes fitted with the IR
T2 Automatic change over pipe
electronic board. The T-MB control features
thermostat (accessory 35169820-001)
the following functions:
Suitable for wall thermostats N, P, R, T and - Switch the unit on and off.
U only (not for infra-red remote control). - Temperature set.
Automatic summer/winter switch to be - Fan speed switch with possible automatic
installed in contact with the entering water speed selection.
circuit and before the control valve (for - Setting the operating mode.
2-pipe installations only). The cooling mode - 7-day time scheduler
is allowed if the water temperature is below
15°C and the heating mode is allowed if the
water temperature is above 25°C. It can be installed one control per cassette,
or one control for up to 20 cassettes
T2 Automatic change over pipe (master/slave configuration) through RS485
thermostat serial link.
(accessory 35169839-001) It is recommended to install the wall-
Suitable for MB controller with T-MB mounted control on the master unit.
thermostat or RT03 remote control. See Installation-Operation-Maintenance
manual for wiring information.

Thermostat T-EC
(accessory 35169884-001)
Thermostat for CFAE for installation on the
job site. It can control up to 16 units.

Electronic control card

(accessory 35169885-001)
For installation on the job site. One
card per unit is required. To be used with
thermostat T-EC.

Kit: Thermostat T-EC + electronic card

(accessory 35169886-001)
Thermostat T-EC For standalone installations.

38 UNT-PRC017-E4
 Accessories

REL03 Relay card for master/slave

configuration - AC fan motor (accessory
35169875-001)
Fitted in the control panel of the master
and slave cassettes, this enables up to eight
units to be controlled by the signal from a
single remote control unit.

- THERMOSTAT (SEE INTERCONNECTION DIAGRAM) 4-pipe

N L
Y2
Y1
R1
III
II
I

R1
- ACCORDING TO APPLICATION
Y1
Y2
III
II
I

N N

7 8 9 10 11 12 7 8 9 10 11 12
REL3 = REPEATER
FCT = FAN COIL TERMINALS
REL-3 REL-3
R1 = RESISTANCE (OPTION)
Y2 = HOT WATER VALVE (OPTION)
Y1 = COLD WATER VALVE (OPTION)
= TRANE WIRING
230Vac
50Hz
230Vac
50Hz
= EXTERNAL CONNECTION RESPONSABILITY OF
L N 1 2 3 4 5 6 L N 1 2 3 4 5 6 THE INSTALLER
L L
PE PE
FCT FCT

PE L N 4 5 6 7 8 9 10 11 12 13 14 15 PE L N 4 5 6 7 8 9 10 11 12 13 14 15

- THERMOSTAT (SEE INTERCONNECTION DIAGRAM) 2-pipe

N L
Y1
R1
III
II
I

R1
- ACCORDING TO APPLICATION
Y1
III
II
I

N N

7 8 9 10 11 12 7 8 9 10 11 12

REL-3 REL-3

230Vac 230Vac
50Hz 50Hz
L N 1 2 3 4 5 6 L N 1 2 3 4 5 6

L L
PE PE
FCT FCT

PE L N 4 5 6 7 8 9 10 11 12 13 14 15 PE L N 4 5 6 7 8 9 10 11 12 13 14 15

UNT-PRC017-E4 39
 Accessories

REL02 for U-type thermostat - AC fan

motor (accessory 35169836-001)
It allows to control up to 10 units with
RS485 serial link.

Figure 8 - REL02 connection with 1 valve

AL AL

SEC1 Y SEC1 Y
SB SB

N PE L N PE L

REL 2 TR REL 2
TR

R POWER
UNIT
REL2 for U

REL04 for T-EC thermostat - EC fan motor

Accessory 35169885-001
It allows control of up to 16 units with
RS485 serial link.

40 UNT-PRC017-E4
 Accessories

TODS (Time Of Day Scheduler)

Accessory 35169878-001
Designed to control up to 60 units in 2 zones within 7 days of operation plus with the
external control board it can start and stop 8 other equipment’s as:
- Chiller for cooling and heating water supply
- Boiler for hot water supply
- Air handler unit for fresh air supply
- Lamps
- Other devices
Each unit connected to the TODS will need to be identified with an alias number from 1 to
60 configured by dip switch on the MB unit control board. Each unit will dialogue with the
TODS through the RS485 serial link using ModBus communication protocol. Each unit is
controlled individually or all at a time per zone and from the TODS the following actions
can be taken:
- View the unit operation mode as heating or cooling, fan operation, the ambient
temperature
- Run the air-conditioning in comfort or economy mode or winter freeze control when off
- Turn On/Off each unit individually or all together
- Modify the operation parameters and temperature control of each individual unit or all
units together
- Operate the Air-conditioning installation within 4 schedule range per day each with its
own temperature setting over 2 zones maximum
- Run the system in Economy or Off mode during holidays. The number of days off needs to
be entered the day before the start of the holiday period using the “Menu” button.
Note: the length of the RS485 cable cannot exceed 700 to 800 meters depending upon the
cable quality and electromagnetic environment

UNT-PRC017-E4 41
 Accessories

ECC System control board

Accessory 35169887-001
The ECC control board is designed to control up to 8 external equipment within the
association of the weekly scheduler TODS such as:
- Chillers
- Cooling and heating mode for the chillers
- Air handlers
- Dampers
- Lamps
- Extractor fans
It has 8 digital inputs that can be associated with any of the other 8 outputs.
The utilization of the TODS with the external control board ECC can really run efficiently the
air-conditioning of any building configuration to reduce the cost of ownership.

42 UNT-PRC017-E4
 Notes

UNT-PRC017-E4 43
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For more information, visit www.Trane.com.

Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.

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