38 LMF Clima
RFH
High efficiency heat
recovery unit
WITH MODULATING HEAT
PUMP CIRCUIT and PLATE
RECOVERY UNIT
from 300 to 4.000 m³/h
HOTELS
The new RFH heat recovery units dedicated to exchange
the air (with the possibility of varying the flow rate) and OFFICES
to its heat treatment (with the possibility of controlling
the supply temperature in the rooms) have been designed SHOPPING CENTRE
and developed in order to reconcile many typical needs of
both tertiary and commercial applications.
The RFH series consists of 4 sizes in a horizontal
configuration only, for air flow rates ranging from 300 to
4000 m3/h.
>70%
36°C 4.000 HEAT PUMP PLATES EFFICIENCY
m³/h
R410A
EC INVERTER PLUG&PLAY INDOOR OUTDOOR
FANS COMPRESSORS INSTALLATION INSTALLATION
ADVANTAGES
• High recovery efficiency
• Reduced energy consumption
• Indoor installation (in false ceiling) and
outdoor installation (with roof)
• Integration with the most common
supervision systems
• Compactness and ease of installation
• Integration of “ALL-IN-ONE” functions (air
recirculation and heat treatment)
300
-7°C m³/h
RFH 39
RFH OPERATION
The units in the RFH range recover the air in the areas cooling system. The internal loads of the returned air are
to be treated. They recover 70% of the expelled air neutralised thanks to the integration of the modulating
temperature with integration of an existing heating and refrigerant circuit.
40 LMF Clima
TECHNICAL SPECIFICATIONS
• Supporting frame in RAL 9002 pre-painted galvanised sheet • Refrigerant circuit, variable capacity, with continuous heat
metal; pump (R410A) consisting of hermetic rotary compressor
• Double-shell closing panels with a thickness of 20 mm, in equipped with EC motor and specific control driver,
pre-painted galvanised sheet metal RAL 9002 outside and summer evaporating coil/winter condenser and summer
galvanised inside; hinged at the bottom for easy access to condensing coil/winter evaporator with 7 rows (with
the internal components. hydrophilic treatment) with copper pipes and aluminium
• Non-flammable thermoacoustic insulation in mineral wool fins, bidirectional electronic expansion valve, liquid receiver,
with a density of 100 kg/m3. 4-way valve for reverse cycle, safety valve, high and low
• High efficiency static heat recovery unit (>70% under nominal pressure transducers, high pressure switch, freon filter,
conditions) of the cross-flow air-air type with aluminium double liquid light.
exchange plates with additional sealing; lower condensate • Microprocessor regulation for automatic management of
collection tank, extended to the entire area dedicated to the inlet temperature, of the free-cooling (through optional
heat treatment. kit), of hot/cold switching and defrosting of the recovery
• Compact filters th. 96 mm with synthetic/fibre glass support unit and of the winter evaporator; control panel with
in 3 non-intertwined layers. On external air intake, efficiency display for setting of the parameters and for displaying of
element and ISO ePM1 50%; on ambient air intake, 50% ISO the probe and set-point values with remote control up to
ePM2.5 efficiency element. 200 m from the unit.
• Lower or lateral access, centrifugal electric fans for inlet and • Possibility of connection to a supervision system based on
exhaust with double intake forward blades equipped with EC Modbur/RS485 protocol, Modbur TCP/IP, BACNet TCP
motor and built-in control electronics. and Web server.
ACCESSORIES
Sanitation module with UVC plasma and antivirus filter Kvir-P
CO2 Sensor AQS
Adjusting damper SKR
On/Off Damper actuator SSE
Additional electric PRE heater SKE 1
Additional electric POST heater SKE 2
External by-pass kit BPL
Water coil module SAF
ISO ePM1 85% (ex F9) class compact filter FC9
Air filter pressure switch PSTD
Flexible connection GAT
Roof cover TPR
External hood CFA
PD2 support feet PD2
RFH 41
MODELS
RFH 5 13 24 36
Air flow available Nom m³/h 500 1300 2400 3600
Available static pressure Nom Pa 150 200 200 200
Radiated sound power Nom dB(A) 62 69 71 73
ELECTRICAL ABSORPTION 5 13 24 36
Nom (1) 6 10 19 25
Total current Nom (2) A 7 11 20 26
Max (3) 13 21 29 48
Nom (1) 820 2310 4250 6210
Total absorbed power Nom (2) kW 730 2410 4580 6020
Max (3) 1500 4000 7000 10000
Electrical power supply V-Ph-Hz 230-1-50 400-3+N-50
ENERGY RECOVERY (1)
Recovered power W 2920 7670 14430 21570
Recovery efficiency % 70.2 71.0 72.3 72.1
Power transferred by the heat pump W 2450 6290 11350 17120
Total power transferred W 5370 13960 25780 38690
Input temperature W/W 6.6 6.0 6.1 6.2
Input temperature °C 25.0
ENERGY RECOVERY (2)
Recovered power W 570 1500 2820 4220
Recovery efficiency % 60.3 60.9 62.1 61.8
Power transferred by the heat pump W 2430 6280 11540 17330
Total power transferred W 3000 7780 14360 21550
Net EER W/W 4.1 3.2 3.2 3.6
Input temperature °C 20
SKE
Power W 1500 2500 5000 7000
Maximum current absorbed A 6,5 3,6 7,2 10,1
Electrical power supply V-Ph-hz 230-1-50 400-3-50
SAF
Cooling power W 1640 3980 9460 14950
Input air temperature °C 18,1 18,3 17,3 17,0
Water flow rate l/h 290 680 1630 2570
Water side load loss kPa 4 6 8 12
Heat output W 2510 6440 12990 19910
Input air temperature °C 33,6 33,4 34,8 35,1
Nom 70 60 75 65
Pressure drop Min Pa 35 30 45 45
Max 100 75 90 75
OPERATING LIMITS (BASE UNIT)
Winter outdoor air temperature min. -7°C (ambient min. 19°C 50% UR (A)
Summer outdoor air max. 36°C - 40% (ambient max. 27°C ) (B)
(A) input temperature ≤ 24°C; balanced air flow rates
(B) input temperature ≥ 22°C; balanced air flow rates
(1) outdoor air at -5°C 80% RH, ambient air at 20°C 50% RH; nominal air flow rate
(2) outdoor air at 32° C 50% RH, ambient air at 26°C 50% RH; nominal air flow rate
(3) with ventilation regulation signals and heat pump at the maximum permissible value
42 LMF Clima
POSSIBLE CONFIGURATIONS
FRESH AIR EXHAUST
A90 E90 EXHAUST
For each size, it is possible to adapt the fresh air
and exhaust intakes to the system according to
the configurations illustrated in the figure, even
with unit already installed.
To change the position of the intakes
simply exchange the filter panels with the FRESH
corresponding panels. AIR
SUPPLY
The M90 configuration must necessarily be
specified on the order as it involves exchanging
the positions between the supply fan and
the electrical panel, this operation that is not
possible with the unit is already installed.
RETURN RETURN SUPPLY
R90 M90
BPL EXTERNAL BY-PASS SYSTEM
A 90
A set of components installed (by the
customer) outside the unit, required if the
configuration of the unit is with M90 and
E90 fans, able to create, commanded by
the on-board electronics, an additional
circuit of external air (free-cooling
outdoor air) in direct communication
with the supply fan. This kit consists of:
• Servomotor damper on the fresh air (1)
• Ducted module on free-cooling air
duct with servomotor (opposed to the
previous one) and an high efficiency filter
extractable from below.
R 90
In figure : configuration is A90 and R90
MODEL 5 13 24 36
L mm 180 180 180 180
P mm 350 420 580 640
H mm 270 410 470 670
Weight mm 3 5 8 10
RFH 43
DIMENSIONS AND WEIGHTS
RFH 5 13 24 36
A mm 1390 1450 1700 1900
B mm 1120 1230 1560 1700
C mm 395 470 530 705
L mm 162 235 303 335
H mm 100 265 266 290
L1 mm 275 331 502 545
H1 mm 252 323 387 545
Weight kg 165 240 275 425
SOUND LEVELS
SPL return
The table shows the sound power values (SWL) in octave band and the
SPL supply
related results; the sound pressure values (SPL) at 1m, 5m and 10m in
supply, in return and outside of the unit are also highlighted, under ducted
unit conditions.
SPL external
RFM SWL [dB] IN OCTAVE BAND [HZ] SWL SPL SUPPLY SPL RETURN SPL EXTERNAL
1m 5m 10 m 1m 5m 10 m 1m 5m 10 m
63 125 250 500 1000 2000 4000 8000 dB dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A) dB(A)
5 63 56 69 66 66 61 61 55 77 70 62 52 47 57 47 42 55 44 39
13 68 78 79 74 70 68 64 59 83 77 69 59 54 65 55 50 62 52 47
24 70 80 85 73 72 71 71 62 87 80 71 61 56 67 57 52 64 54 49
36 69 82 87 76 74 71 63 64 89 82 73 63 58 68 58 53 66 56 51
44 LMF Clima
PERFORMANCE
RFH 5 RFH 13
(Pa)
(Pa)
[m3/h] [m3/h]
RFH 24 RFH 36
(Pa)
(Pa)
[m3/h] [m3/h]
The graphs provide an indication
of the useful static pressure (Pa)
as the airflow [m3/h] supplied by
the base inlet unit varies. Consult
the technical bulletin to check
the specific data of the unit’s
aeraulic performance.
