36C and 36D Gas Control

Product Information

The 36C and 36D combination gas control valves and Cycle Pilot). Along with its compact size, all
are compact multifunction controls designed to control adjustments and features, as well as the
meet requirements for use with Standing Pilot system interface wiring panel, have been designed
systems and all types of intermittent ignition on the top surface of the control for simplified
systems (Direct Spark, Hot Surface, Proven Pilot, application and easy accessibility.

Information in this manual is provided to qualified HVAC Professionals Only for the installation and replacement of gas
valves. Homeowners must contact their local HVAC Contractor for gas valve replacement.
Any gas valve suspected of damage or if it has been flooded with water must be replaced immediately. There are no service-
able parts on a gas valve.
General Specifications
Standard Features

❏ Inlet screen CURRENT REQUIREMENTS

❏ Automatic valves seal with in-line pressure
VOLTAGE WITHOUT REDUNDANT WITH REDUNDANT
❏ Ambient temperature (most models) -40˚ to 175˚F FREQUENCY SOLENOID SOLENOID
❏ Mounting - horizontal, vertical, and 90˚ from horizontal 24V, 60HZ .190/.230 AMPS .550/.650 AMPS
❏ Pilot filter 120V, 60HZ .030/.042 AMPS .102/.138 AMPS
❏ Manual shut-off valve 240V, 60HZ .016/.020 AMPS .054/.067 AMPS
❏ Top mounted components 24V, 50HZ .230/.270 AMPS .450/.550 AMPS
❏ Easily accessible pilot and outlet pressure tap 120V, 50HZ .030/.042 AMPS .100/.200 AMPS
❏ Easy grip pipe boss 240V, 50HZ .017/.021 AMPS .050/.070 AMPS

Optional Features

❏ Pressure switch ❏ Delay opening

❏ Thermocouple operated safety valve ❏ Conduit connection
❏ Negative pressure regulator ❏ Inlet pressure tap
❏ Natural to LP regulator selector (convertible) ❏ Right/left angle outlets
❏ Step opening-regulated (non-convertible) ❏ Solenoid operated redundant valve
❏ 2 stage (Relay or Bi-metal operated) ❏ Adjustable pilot pressure (non-regulated)
❏ Slow opening ❏ Mounting holes for 8-32 screws

Regulator Information

ADJUSTMENT RANGE:
Natural Gas: 2.5” to 5” W.C. Maximum Pressure: 1⁄2 PSI
LP Gas: 4.2” to 11.0” W.C. Agency Approved: -AGA all models
7.5” to 12.0” W.C. -CGA all models
-UL as required

36C/36D Schematic Gas Flow Diagram

ECO

ADJUST ADJUST
MASTER SCREW VENT MASTER SCREW VENT
REGULATOR REGULATOR
OPEN BY PASS CLOSED BY PASS
ORIFICE ORIFICE

MANUAL VALVE
IN "ON" POSITION
RELAY RELAY
COIL COIL

VALVE
ECO TERMINALS LEVER
MANUAL
TO POWER HEAD COIL PILOT PILOT
VALVE CYCLING CYCLING
(OPTIONAL) FILTER CONTROL FILTER CONTROL
ORIFICE VALVE ORIFICE VALVE
MANUAL VALVE OPEN MANUAL VALVE OPEN
WINDOW OPEN WINDOW OPEN

MAIN VALVE MAIN VALVE

INLET DIAPHRAGM OUTLET REGULATED INLET DIAPHRAGM OUTLET REGULATED

SPRING MAIN GAS SPRING MAIN GAS
FLOWING FLOWING
PILOT ADJ PILOT ADJ
SCREW SCREW

INTERRUPTER WORKING GAS PRESSURE REDUNDANT/PILOT VALVE WORKING GAS PRESSURE

(LOCATED IN OPEN POSITION (LOCATED IN OPEN POSITION
AT TOP) AT TOP)

TO DIAPHRAGM TO DIAPHRAGM
PILOT OUTLET PILOT OUTLET

LINE INTERRUPTER GAS AUTOMATIC GAS VALVE

VALVE FOR USE WITH THERMOCOUPLE (INTERMITTANT IGNITION)
(STANDING PILOT)

36C and 36D GAS CONTROL

PRODUCT INFORMATION
2 R-3769C
 Performance Curves
Range of Regulation Capacity
RANGE OF REGULATION
(OUTLET PRESSURE VS. FLOW)
5.5

5
OUTLET PRESSURE (IN. W.C.)

4.5

3.5

2.5

2
0 100 200 300 400 500
FLOW (1000 BTU/HR NAT. GAS)
7" MIN. INLET/2.5" W.C. OUTLET 14" MAX. INLET/2.5" W.C. OUTLET 21" W.C. INLET/2.5" W.C. OUTLET
7" MIN. INLET/5" W.C. OUTLET 14" MAX. INLET/5" W.C. OUTLET 21" W.C. INLET/5" W.C. OUTLET

RANGE OF REGULATION

AGA STD. NAT. GAS LP GAS

PIPE SIZES .64 SP. GR. 1.53 SP. GR.
AVAILABLE (1,000 BTU/CU. FT.) (2,500 BTU/CU. FT.)
1⁄2” X 3⁄8” 15,000 - 100,000 15,000 - 162,000
1⁄2” X 1⁄2” 30,000 - 290,000 30,000 - 469,000
1⁄2” X 3⁄4” 30,000 - 290,000 30,000 - 469,000
3⁄4” X 3⁄4” 50,000 - 400,000 50,000 - 648,000

1” Pressure Drop Capacity

1” PRESSURE DROP CAPACITY

DIFFERENTIAL PRESSURE VS. FLOW
DIFFERENTIAL PRESSURE (IN. W.C.)

1⁄2” X 3⁄8” 1⁄2” X 1⁄2”

1.5
3⁄4” X 3⁄4”

0.5

0
0 100 200 300 400
FLOW (1000 BTU/HR NAT. GAS)

1” PRESSURE DROP CAPACITY RATING

BTU/HR
PIPE SIZES
AGA STD. NAT. GAS LP GAS
AVAILABLE (1,000 BTU/CU. FT.) (2,500 BTU/CU. FT.)
1⁄2” X 3⁄8” 100,000 162,000
1⁄2” X 1⁄2” 230,000 372,600
1⁄2” X 3⁄4” 230,000 372,600
3⁄4” X 3⁄4” 280,000 453,600

36C and 36D GAS CONTROL

PRODUCT INFORMATION
R-3769C 3
Features and Options
Fast Open Control
ON
36C/36D FAST OPENING GAS VALVE
P IL O T
4.0
This control has a fast opening
OFF

OUTLET PRESSURE (IN. W.C.)

3.5
characteristic which is suitable
for a wide range of applications. It 3.0

provides a fast rise to full pressure 2.5

upon energizing the automatic
ON
P IL O T
OFF
2.0
valves. Regulator spring conversion 1.5
kits are available for most models. 1.0
0.5
0.0
0 2 4 6 8 10
SECONDS
NOTE: TYPICAL OPENING CURVE NATURAL GAS
200,000 BTU/HR. 7” W.C. INLET / 3.5” W.C. OUTLET.

Slow Open Control

36C/36D SLOW OPENING GAS VALVE

ON
P IL O T
OFF
This control has slow opening 4.0

OUTLET PRESSURE (IN. W.C.)

characteristic. It provides a slow 3.5

increase of gas to full pressure 3.0

for smoother ignition, as may be 2.5
ON
P IL O T
OFF
required. The control can be a fast 2.0
or slow close as well. 1.5
1.0
0.5
0.0
0 4 6 8 10 12
SECONDS
NOTE: TYPICAL OPENING CURVE NATURAL GAS
120,000 BTU/HR. 7” W.C. INLET / 3.5” W.C. OUTLET.

Negative Regulator Control

36C/36D NEGATIVE REGULATOR
This control is designed for direct 0
OUTLET PRESSURE (IN. W.C.)

burner ignition applications with

ON
P IL O T
OFF
appliances having premix type 0.05
burners using a combustion air
-0.1
blower requiring regulated negative
outlet pressure. The control is -0.15
equipped with dual automatic
valves that control gas flow to the -0.2
main burner, a two position manual
-0.25
valve for manual gas shut off, and 0 2 4 6 8 10
a negative pressure regulator. A SECONDS
variety of models are available to NOTE: TYPICAL OPENING CURVE NATURAL GAS 200,000 BTU/HR.
7” W.C. INLET / -.2” W.C. AT -2 W.C. VACUUM PRESSURE.
suit voltage, pipe size and pressure
regulator requirements.
Manual HI-LO Adjustable Control
36D MANUAL HI-LO ADJUSTABLE GAS VALVE
4.0
This control has a manual outlet (MAXIMUM)
OUTLET PRESSURE (IN. W.C.)

ON
3.5
P IL O T

pressure adjustment characteristic.

OFF

3.0
It provides a fast rise of gas to the
2.5
manually adjusted outlet pressure
for a preferred flame setting in gas 2.0

fireplace and gas log applications. 1.5

(MINIMUM)
1.0
0.5
0.0
0 2 4 6 8 10
SECONDS
NOTE: TYPICAL OPENING CURVE NATURAL GAS 25,000 BTU/HR.
7” W.C. INLET/1.5” W.C. MINIMUM/3.5” W.C. MAXIMUM.

36C and 36D GAS CONTROL

PRODUCT INFORMATION
4 R-3769C
 Features and Options
Step Open Control

This control has a step open feature 36C/36D STEP OPENING GAS VALVE
that regulates the outlet to an initial 4.0

OUTLET PRESSURE (IN. W.C.)

step pressure (non-field adjustable) 3.5
ON
P IL O T
OFF

and rises to the full outlet pressure. 3.0

It provides a step pressure for softer 2.5
ignition. 2.0
1.5
ON
Options: 1.0
1. Regulated step factory set to
P IL O T
OFF

0.5
a predetermined step pressure.
0.0
2. Fixed orifice step internally 0 2 4 6 8 10
orificed for a step pressure SECONDS

based upon inlet pressure NOTE: TYPICAL OPENING CURVE NATURAL GAS 200,000
BTU/HR. 7” W.C. INLET / 3.5” W.C. OUTLET/1” W.C. STEP.
and flow.

Two Stage Control

This control has a two-stage feature.

Upon energizing the main and redundant 36C/36D TWO STAGE GAS VALVE
4.0
ON

control valves, the servo regulator will

OUTLET PRESSURE (IN. W.C.)

P IL O T
OFF

provide a low fire rate until the high fire 3.5

relay or bi-metal heater is energized or 3.0

manual selection is made. (Adjustable 2.5
high fire.) 2.0
1.5
ON
Options:
1.0
1. Bi-metal operated for a
P IL O T
OFF

gradual change from the 0.5

first stage to second stage. 0.0

0 2 4 6 8 10
2. Relay operated for an instantaneous SECONDS
change from the first stage to the NOTE: TYPICAL OPENING CURVE NATURAL GAS 200,000 BTU/HR.
7” W.C. INLET / 1” W.C. FIRST STAGE/3.5”W.C. SECOND STAGE.
ON
second stage.
3. Manually operated from first to
P IL O T
OFF

second stage with step at first stage

when in second stage position.

Convertible Regulator

36C/36D NAT/LP CONVERTIBLE GAS VALVE

The convertible regulator option 4.0
involves a construction which permits
OUTLET PRESSURE (IN. W.C.)

ON
3.5
easy Natural to LP conversion (or vice
P IL O T
OFF

3.0
versa) by removing, inverting and re-
2.5
placing the regulator cap screw or by
2.0
LC

a mechanical adjustment. This feature

O

ON
P IL O T
OFF
easily lends itself to use in mobile 1.5

homes and infra-red applications. 1.0

0.5
Options: 0.0
0 2 4 6 8 10
1. Fixed orifice step internally SECONDS
orificed for a step pressure
NOTE: TYPICAL OPENING CURVE NATURAL GAS
based upon inlet pressure. 200,000 BTU/HR. 7” W.C. INLET / 3.5” W.C. OUTLET.
2. Fast open to full outlet pressure.

36C and 36D GAS CONTROL

PRODUCT INFORMATION
R-3769C 5
System Applications
Hot Surface Ignition Systems
HSI CONTROL. The thermostat calls for heat and HOT LINE VOLTAGE NEUTRAL

energizes the HSI control. If the system is equipped

with prepurge, the purge fan is energized and power
will be delayed thirty seconds before application to TRANSFORMER
24 VOLTS A.C.
the silicon carbide igniter. If prepurge is not selected, 60 H.Z.
the igniter is powered within one second. The igniter W R COMMON (“C”)

heats up and at the end of the heating period, the

LIMIT
THERMOSTAT
redundant and main valves are opened. A flame must
be detected within a fixed time period or both valves MV

BLACK
close, the igniter is turned off and the HSI control locks REDUNDANT MAIN

WHITE
VALVE VALVE
out unless the system is equipped with retry. Retry MV

indicates the ignition sequence will be repeated for a TR

TH
total of three tries if flame is undetected or lost within
FP
30 seconds of ignition. FLAME
SENSOR PROBE
SILICON
Accessories: HSI Control, Sense Electrode, Silicon GND CARBIDE
IGNITOR
Carbide Igniter. L

LINE VOLTAGE IGN

LOW VOLTAGE BLACK

INTEGRATED CONTROL. The 50A50

integrated Hot Surface Ignition control CIRCULATOR
BLOWER
employs a microprocessor to continuously
INDUCER
monitor, analyze, and control the proper
CIRC IND
operation of the gas burner, inducer, and HEAT COOL PARK PARK NEU IND NEU
R
fan. Signals interpreted during continual RO2
surveillance of the thermostat and flame K2 K4 ROLLOUT
SWITCH
RO1
sensing element initiate automatic ignition of K1a K1b TH
XFMR
the burner, sensing of the flame, and system LINE HOT HOT
120 VAC
shut-off during normal operation. The control LINE NEU XFMR
24 VAC

incorporates system fault analysis for quick NEU

TR COMPRESSOR
gas flow shut-off, coupled with automatic K8 C CONTACTOR
R
COIL
ignition retry upon sensing a fault correction. Y Y
K7 G G
W W
FLAME FP1 FP2 IGN L GND MV MV PS HLO HLI THERMOSTAT
SENSE HIGH AUX.
PROBE LIMIT LIMIT
IGNITOR PRESSURE
GAS
VALVE SWITCH

Direct Spark Ignition System

SPARK RETURN
The thermostat calls for heat and simultaneously
energizes the DSI control module and both
redundant and main gas valves. Sparks at the
ignition electrodes ignite the gas at the main burner.
LEAD
H.V.

Flame is sensed through the electrodes by the flame

detection circuit and shuts off the sparking. If flame
is not established within a fixed time period (lock-out
DSI TR
time) both valves close, sparking ceases and the CONTROL
control module locks out. MV
MAIN REDUNDANT
VALVE VALVE 24V.
MV
Accessories: DSI Control, Electrodes.
TH
GND

36C and 36D GAS CONTROL

PRODUCT INFORMATION
6 R-3769C
 System Applications
Proven Pilot System
HOT LINE VOLTAGE NEUTRAL

The thermostat calls for heat and simultaneously

LIMIT 120 VAC
energizes the pilot valve and the Proven Pilot
control. Sparking from the ignition electrode to W R COMMON (“C”)
the pilot burner ignites the gas at the pilot burner. THERMOSTAT 25 VAC

Flame is sensed by the flame detection circuit which

H.V. LEAD
energizes the main valve. Main burner gas is ignited
and sparking ceases once a pilot flame is detected. T
H
P M
V V
M P
V V
T
R
G
N F
D P
IGNITION
ELECTRODE
(PILOT)

Accessories: Proven Pilot Control, Pilot Burner MAIN

VALVE
Assembly. SENSE
LINE VOLTAGE ELECTRODE
PILOT
LOW VOLTAGE VALVE

Cycle Pilot System

The thermostat calls for heat and simultaneously energizes pilot

solenoid and pilot relight control. Pilot valve opens and relight begins
3098 SENSOR
sparking. Gas flow activates the pressure switch. Sparks ignite pilot HOT

gas. Once the flame is detected, the sparks stop. After sufficient heat MAIN COIL 2
COLD
is sensed by the Mercury Flame Sensor, the main valve is energized 3

PILOT 4
and the system is in operating mode. (Fig. 1) REDUNDANT
COIL
PRESSURE
SWITCH

6 3 2 5 4

The schematic for “ALL GASES,” Figure 2, includes a safety timer

WIRING
which acts to close the main gas valve, turns off the pilot redundant HARNESS

BLUE

ORG
RED
coil and locks out the system should a flame not be detected within a

TAN

YEL
fixed period of time. 5 4 2 3 1

WARP
Accessories: Mercury Flame Sensor, Pilot Burner/Electrode SWITCH SAFETY
TIMER
Assembly, Pilot Relight Control, Safety Timer (for all gas systems). 5022

3098 SENSOR WARP SWITCH HEATER

HOT
MAIN COIL 2
T2 T1
COLD
3
CYCLE PILOT HARNESSES
PILOT 4 T2 T1
PRESSURE
REDUNDANT
COIL SWITCH HARNESS TYPE NO.
6 3 2 5 4 LENGTH
5059 TO ELECTRODE
WIRING 36” F115-0059
HARNESS THRU MOUNTING
36” F115-0064 HOLES

24 VAC
T2 T1

LIMIT
THERMOSTAT
5059 TO ELECTRODE LINE
6 5 4 3 2 1
5 4 3 2 1

THRU MOUNTING
ALL GASES
HOLES Figure 2
24 VAC

40VA
TRANSFORMER LIMIT
THERMOSTAT
6 5 4 3 2 1

LINE

NATURAL GAS
Figure 1

Standing Pilot System

Gas flow to the pilot burner is controlled by a safety High

Limit Thermostat
valve which is manually operated and held in by
White-Rodgers
current generated from a thermocouple placed in Gas Valve

the pilot flame. When the thermostat calls for heat

the main valve is energized. TH TH-PG PG
Thermocouple
connection E.C.O.
Micro device Power
Unit
To Pilot
Generator
Lead
assembly
Wiring for 36C03U/36C13U/36D34U (.750 Volt)
E.C.O. Terminals

Wiring for Energy Cut-Off (E.C.O.) connection

36C and 36D GAS CONTROL

PRODUCT INFORMATION
R-3769C 7
Electrical Panels/Connections
2 Terminal Panel

TH TH-TR TR Options:
* - 1⁄4” dual male terminals MAIN VALVE RELAY
- 1⁄4” single male terminals
- 1⁄4” combination tab/screw
- Conduit connector with (2) flying leads

TH TR
Note: Redundant/Pilot valve leads
terminated on panel if applicable.
REDUNDANT PILOT/VALVE

3 Terminal Panel

TH TH-TR TR Options:
* - 1⁄4” dual male terminals MAIN VALVE RELAY
- 1⁄4” single male terminals
- 1⁄4” combination tab/screw terminals
- Conduit connector with (3) flying leads

TH TH - TR TR
Note: Redundant/Pilot valve leads
terminated on panel if applicable.
REDUNDANT PILOT/VALVE

4 Terminal Panel

1 2 Options: MAIN VALVE RELAY

* - 1⁄4” dual male terminals
- 1⁄4” single male terminals
1 2
- Conduit connector with (4) flying leads
3 4
Note: Redundant/Pilot valve leads 3 4
terminated on panel.
PILOT ADJ.

REDUNDANT PILOT/VALVE
Cycle Pilot With 4 Terminal Panel

Options: 1 RELAY 2
1 2
* - 1⁄4” dual male terminals with
3
⁄16” pin terminal on #2

3 4 Note: Redundant/Pilot valve leads

terminated on panel. REDUNDANT PRESSURE
SOLENOID SWITCH

PILOT ADJ.

3 4

* Indicates optional terminals shown

36C and 36D GAS CONTROL

PRODUCT INFORMATION
8 R-3769C
 Electrical Panels/Connections
Cycle Pilot With Plug In Receptacle

TAN 3 TAN
PILOT Options:
ADJ. REDUNDANT
- Edge connector
COM.

COIL 4 2
- Wiring harness with connector
- Flying leads MAIN
RELAY BLACK PRESSURE
* - 1⁄4” male “Com, L, S” terminals COIL
L

SWITCH
WHITE
- Plug in receptacle on top
or outlet side
S

L
TAN

COMMON

TAN
Bi-metal 2 Stage

D-1 REDUNDANT/ D-2 D-1 REDUNDANT/

Options: PILOT VALVE PILOT VALVE

* - (6) 1⁄4” male terminals

- (5) 1⁄4” male terminals
W-1 C-1 W-1 C-1
MAIN VALVE MAIN VALVE

D-1 D-2 Note: Redundant/Pilot valve leads

terminated on panel. W-2 C-2 W-2 C-2
W-1 C-1
HI-LO OPERATOR HI-LO OPERATOR

C-2
PILOT
ADJ.

W-2

Relay 2 Stage

GREEN

1 2 Options:
RED
* - 1⁄4” dual male terminals 4
3
2
- Edge connector TAN PRESSURE
SWITCH
- Flying leads REDUNDANT TAN
3 VALVE
3 4 TAN

2ND STAGE
Note: Second stage relay leads RELAY
36D13
and redundant valve leads
PILOT ADJ. terminated on panel. MAIN VALVE
2 6 5 4 3 2 1
RELAY COIL

2 1 4
( WITH PRESSURE SWITCH
AND EDGE CONNECTOR )

Millivolt 3 Terminal Panel

Options: MAIN VALVE RELAY

TH TH-PG PG * - 1⁄4” combination tab/screw terminals

TH TH-PG PG
* Indicates optional terminals shown

36C and 36D GAS CONTROL

PRODUCT INFORMATION
R-3769C 9
Dimensions
Basic Model (24V or Millivolt)

Includes all basic 24V or 750 millivolt as

well as negative regulator models.

Basic Model (120V or 240V)

Includes all 120V or 240V basic models

with a conduit connector.

Regulated Step

For all regulated step models including

convertible models with a natural/LP
gas selector feature.

Manual 2 Stage With Regulated Step

For manual Hi-Lo two stage type models.

36C and 36D GAS CONTROL

PRODUCT INFORMATION
10 R-3769C
 Dimensions
Bi-metal Operated 2 Stage

Includes all bi-metal operated 2 stage

type models.

Relay Operated 2 Stage

Includes all relay operated 2 stage type models.

Plug In Pilot Types

Includes all plug in pilot type pressure

switch models.

Note: Gas valve shown has plug in pilot receptacle

on top.

Convertible Regulator (Natural/LP Selector)

Includes all natural/LP gas convertible

regulator models with the “Flip-Flop”
type selector.

36C and 36D GAS CONTROL

PRODUCT INFORMATION
R-3769C 11
Models Available
Each valve is uniquely defined by a
model number succeeded by the type Accessories
number as follows:
REGULATOR
36C xx x TYPE xx CONVERSION KITS AVAILABLE
Basic Model Number Series
F92-0656 LP to NAT GAS (2.5”-5.0”)
Specification of options/features F92-0659 NAT to LP GAS (7.5”-12.0”)
(numbered versions)
F92-0737 NAT to LP GAS (Non-regulated)
PACK OPTION F92-0866 NAT to LP GAS (4.2”-11.0”)
VOLTAGE LETTER CODING PACK
CODE F69-0727 1⁄4” brass compression fitting
LETTER VOLTAGE FREQUENCY CURRENT TYPE NUMBER
NONE 24 60 A.C. NUMBER PIPE SIZE (INLET x OUTLET) B1 BULK PACK for pilot line conversions
1⁄2” x 3⁄8” 20/BOX
A 120 60 A.C. 1XX F92-0514 One 3⁄4” x 1⁄2” N.P.T. and one
B 115 50 A.C. 2XX 1⁄2” x 1⁄2” S1* SINGLE PACK
1/BOX 1⁄2” x 3⁄8” N.P.T. reducer bushings
C 24 50 A.C. 3XX 1⁄2” x 3⁄4”
G 240 60 A.C. 4XX 3⁄4” x 3⁄4” P1 PALLET PACK
H 240 50 A.C. * INCLUDES INDIVIDUAL
INSTRUCTION SHEETS
U .750 -- D.C.

LINE
*
MODEL NO. TYPE GAS REGULATOR INTERRUPTER STEP OPERATOR SPECIAL FEATURES
36C01 NAT YES NO NO RELAY NO LINE INTERRUPTER, RELAY OPERATOR, REGULATOR
36C02 NAT/LP YES YES NO RELAY NAT/LP FLIP-FLOP SELECTOR
36C03 NAT YES YES NO RELAY STANDARD STANDING PILOT
36C04 NAT YES YES REGULATED RELAY REGULATED STEP OPENING
36C05 NAT YES YES REGULATED RELAY MANUAL HI-LO (TWO STAGE), NATURAL GAS
36C10 ALL NO YES NO RELAY 36C03 WITH OUT REGULATOR
36C12 NAT/LP YES YES REGULATED RELAY NAT/LP SELECTOR, REGULATED STEP OPENING W/NAT/LP SELECTOR
36C13 LP YES YES NO RELAY 36C03 ONLY LP GAS
36C14 LP YES YES REGULATED RELAY 36C04 ONLY LP GAS
36C15 LP YES YES REGULATED RELAY MANUAL HI-LO (TWO STAGE), LP GAS
36C21 ALL NO NO NO RELAY NO MANUAL VALVE, NO PILOT
36C27 NAT YES NO REGULATED RELAY 36CO4 WITH OUT LINE INTERRUPTER
36C36 NAT/LP YES NO NO RELAY PLUG-IN-PILOT
36C38 NAT YES NO NO RELAY BI-METAL 2 STAGE
36C40 NAT YES YES NO RELAY BI-METAL 2 STAGE
36C41 LP YES YES NO RELAY BI-METAL 2 STAGE
36C53 NAT.LP YES YES NO RELAY SLOW OPENING
36C67 NAT/LP YES YES FIXED RELAY NAT/LP SELECTOR (”FLIP-FLOP“), STEP OPENING
36C68 NAT/LP YES SOLENOID NO RELAY 36C03/C13 WITH REDUNDANT
36C74 NAT/LP YES SOLENOID REGULATED RELAY 36C04/C14 WITH REDUNDANT
36C76 NAT/LP YES SOLENOID NO RELAY BI-METAL 2 STAGE
36C77 NAT/LP YES SOLENOID FIXED RELAY NAT/LP SELECTOR (”FLIP-FLOP“), STEP OPENING
36C78 NAT/LP YES SOLENOID NO RELAY 36C77 WITH OUT STEP OPENING
36C81 NAT/LP YES SOLENOID NO RELAY 36C53 WITH REDUNDANT, SLOW OPENING
36C84 NAT/LP YES SOLENOID NO RELAY PRESSURE SWITCH, PLUG IN PILOT
36C87 NAT/LP YES SOLENOID REGULATED RELAY PRESSURE SWITCH
36C90 NAT/LP YES SOLENOID NO RELAY 36C68 LESS MANUAL VALVE
36C92 NAT/LP YES SOLENOID NO RELAY 36C76 WITH PRESSURE SWITCH
36C94 NAT/LP YES SOLENOID SLOW RELAY SLOW OPEN, PRESSURE SWITCH WITH PLUG IN PILOT
36D01 NAT/LP YES NO FIXED RELAY 36C67 WITH OUT LINE INTERRUPTER
36D11 ALL NO SOLENOID NO RELAY 36C90 WITH OUT REGULATOR
36D13 NAT/LP YES SOLENOID NO RELAY RELAY OPERATED 2 STAGE
36D14 NAT/LP YES SOLENOID NO RELAY 36D13 WITH PRESSURE SWITCH
36D22 NAT YES YES NO RELAY 36C03 WITH BRITISH THREADS
36D23 NAT/LP YES SOLENOID NO RELAY 36D13 WITH OUT MANUAL VALVE
36D24 NAT/LP YES SOLENOID NO RELAY NEGATIVE REGULATOR WITH DELAYED OPENING
36D27 NAT/LP YES SOLENOID NO RELAY NEGATIVE REGULATOR
36D29 NAT/LP YES SOLENOID NO RELAY 36C76 WITH OUT MANUAL VALVE
36D32 NAT/LP YES YES NO RELAY MANUAL HI-LO ADJUSTMENT

*Models numbers may not be current production. Please consult White-Rodgers distributor or visit www.white-rodgers.com.

White-Rodgers is a division
of Emerson Electric Co.

The Emerson logo is a

trademark and service mark
of Emerson Electric Co.

R-3769C www.white-rodgers.com
1006 www.emersonclimate.com