White Rodgers 36J27-554 User Manual
L
36J27-554
DSI and HSI Modulating Combination Gas Valve
INSTALLATION INSTRUCTIONS
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
The 36J27 combination gas valve is designed for
direct spark ignition (DSI) and hot surface ignition
(HSI) system applications. This control is equipped
with redundant and main solenoid valves that control
gas ow to the main burners, a pressure regulator
and a two-position on/o switch for regulation
and electrical shut-o of the solenoid valves. Upon
signal from an integrated furnace control, the valve
modulates outlet pressure.
Pressure Regulator Adjustment Range ( inches W.C.)
CSA Std. Gas
Pipe Sizes
1/2” x 1/2” NPT
.64 Sp. Gr.
(1000 BTU/CU. FT.)
20,000 – 210,000
BTU/HR
For L.P. Gas Use Conversion Kit F92-1021
1.53 Sp. Gr.
(2500 BTU/CU. FT.)
32,600 – 340,000
BTU/HR
LP Gas
Fig. 1 – 36J27 Modulating Gas Valve
Adjustment
Range
(NAT., IN. W.C.)
0.40 – 4.0 1.3 – 11.5
CONTROL LABE
Adjustment
(LP., IN. W.C.)
Range
1.0" Pressure Drop Capacity
CSA Std. Gas
Pipe Sizes (NPT)
1/2” x 1/2” (Vertical or Upright) 140,000 BTU/HR 226,800 BTU/HR
Ambient Temperature .... -40° to 175°F
Pressure Rating .............. 14” W.C. (1⁄2 PSI) max.
Voltage ........................... 24 VAC
Frequency....................... 60 Hz
Total Current .................. 1.0A
Pulse Width Modulation (PWM):
Low level: 0 – .03 volts
High level: 3 – 5.5 volts
Modulation ..................... 35% – 100% opening
with 1% increments
Regulator Vent Outlet .... accepts 5/16" I.D. hose
Rotary dip switch for pressure regulation adjustment
Precalibrated for LP – simplies conversion
www.white-rodgers.com
www.emersonclimate.com
.64 Sp. Gr.
(1000 BTU/CU. FT.)
Description ................................................ 1
Specications ............................................. 1
Mounng Posions ......................................... 2
Precautions ................................................ 3
Installation ................................................. 4
System Wiring
Adjustment ................................................ 5
Pressure Regulator Adjustment
Lighting Instructions.................................... 6
1.53 Sp. Gr.
(2500 BTU/CU. FT.)
CONTENTS
PART NO. 37-7004D
LP Gas
Replaces 37-7004C
1345
MOUNTING POSITIONS
UPRIGHT, OR 0° TO 90° FROM UPRIGHT
Upright (inlet left)
90° from Upright (inlet le)
Vercal (inlet top)
Vertical (inlet bottom) Vertical (inlet top)
Vercal (inlet boom)
90° from Upright (inlet boom)
Fig. 2 – Valve Mounting
3.000 MAX. SWING RADIUS
Length .................................. 4.75"
Width ................................... 2.38"
Height .................................. 4.58"
Swing Radius ........................ 3.00"
Fig. 3 – Dimensions
2
Upright
(facing le)
Swing Radius
CAUTION
PRECAUTIONSMOUNTING POSITIONS
!
DO NOT BEGIN INSTALLATION UNTIL YOU READ THE FOLLOWING
PRECAUTIONS.
WARNING
1. Failure to turn o electric or main gas supply
to heating system could cause personal
injury and/or property damage by shock,
gas suocation, re, and/or explosion.
2. Do not use this control on circuits exceeding
specied voltage. Higher voltage will damage the control and may cause shock or re
hazard.
3. NEVER USE FLAME OR ANY KIND OF SPARK
TO CHECK FOR GAS LEAKS–COULD CAUSE
FIRE AND/OR EXPLOSION.
4. Do not use a control set for natural gas with
LP gas, or a control set for LP gas with natural
gas. Personal injury and/or property dam-
age, gas suocation, re, and/or explosion
may result.
If you do not follow these instructions exactly, a re or explosion
may result, causing property damage, personal injury or loss of life.
5. Do not use a gas valve which appears to
be damaged. A damaged valve may cause
personal injury and/or property damage
due to shock, gas suocation, re, and/or
explosion. Contact supplier to replace any
valve that appears to have been damaged.
6. Do not use a gas valve which appears to
be damaged. A damaged valve may cause
personal injury and/or property damage
due to shock, gas suocation, re and/or
explosion. Contact supplier to replace any
valve that appears to have been damaged.
7. Do not use a gas valve that has been in
direct contact with water. Water entering
gas valve may result in concealed internal
damage to gas valve. Personal injury and/
or property damage, gas suocation, re
and/or explosion may result.
!
Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring can
cause equipment damage, property damage, and/or personal injury.
This control is not intended for use in locations where it may come in direct contact with water.
Suitable protection must be provided to shield the control from exposure to water (dripping,
spraying, rain, etc.).
3
INSTALLATION
Piped Gas
Supply
Piped Gas
Supply
Tubing Gas
Supply
NOTE: ALWAYS INCLUDE A
DRIP LEG IN PIPING
NOTE: A MANUAL SHUTOFF VALVE
MUST BE INSTALLED WITHIN
6 FEET OF THE EQUIPMENT
Horizontal
Drop
3 in.
minimum
Gas Valve
Gas Valve
Riser
3 in.
minimum
Drop
Horizontal
Riser
Gas Valve
3 in.
minimum
NOTE
NOTE
1. Turn o electrical power to the system at the
fuse box or circuit breaker. Also turn o the
main gas supply.
2. If replacing an existing valve, disconnect all
plumbing and electrical connections from the
old control.
3. The control may be installed upright, + or
– 90˚ from upright, or vertical (refer to g. 2).
The arrow on the valve indicates the direction
of inlet gas ow.
All piping must comply with local codes,
ordinances, and/or national fuel gas codes.
4. You should use new pipe that is properly
chamfered, reamed, and free of burrs and
chips. If you are using old pipe, be sure it is
clean and free of rust, scale, burrs, chips, and
old pipe joint compound.
5. Apply pipe joint compound (pipe dope) that
is approved for all gases, only to the male
threads of the pipe joints. DO NOT apply
compound to the rst two threads (see gure
4 for typical piping connections).
6. If you are using a vise or open-end wrench to
hold the valve while installing piping, do not
tighten excessively, as this may damage the
valve. (Torque: 375 in-lb maximum.) Do not
cross-thread during installation as this may
damage the valve.
7. See SYSTEM WIRING when making electrical
connections. After all gas and electrical connec-
tions are completed, turn gas on and check for
gas leaks with leak detection solution or soap
suds. Bubbles forming indicate a leak. SHUT
OFF GAS AND FIX ALL LEAKS IMMEDIATELY.
SYSTEM WIRING
Refer to and follow the appliance manufacturer's
wiring diagram. Refer to figure 5 for terminal
identication.
All wiring should be installed according to local
and national electrical codes and ordinances.
Always check that the electrical power supply used
agrees with the voltage and frequency shown on
the gas control.
Fig. 4 – Typical Gas Valve Piping
4
PRESSURE
RE
INSTALLATION
ELECTRICAL
5 PIN CONNECTOR
PIN 1
LOCATION
INLET
PRESSURE
TAP POST
VALV E INLET
GULATOR
VENT
OUTLET
TAP POST
Electrical 5 PIN Connector Pin Out
VALV E OUTLET
PIN 5 - TH - Main Valve 24 VAC (top pin, with the cover pointing up)
PIN 4 - TR - Ground
PIN 3 - TX - Communication to IFC
PIN 2 - RX - Communication to Stepper
PIN 1 - TH - Board 24VAC (bottom pin, with the cover pointing up)
Fig. 5 – 36J27 Valve Features
ADJUSTMENT
The gas valve outlet pressure was pre-adjusted for both Nat. and LP at the factory, but ne adjustment
is possible by removing the access plug and turning the ne-adjustment screw with a 1/8" at blade
screwdriver. Adjustment must only be done while monitoring outlet pressure with a suitable manometer
properly attached to the outlet pressure tap. The outlet pressure tap must be leak checked after resealing (refer to Notes and Fig. 6 below).
Notes:
1. The maximum outlet pressure adjustment using
the ne adjustment screw is approximately
±15% from the original factory setting.
2. The ne adjustment screw has 16 detents and
can be rotated innitely 360° in either direc-
tion. However, at some point in the rotation,
the outlet pressure will switch from +15% to
-15% or vice versa, depending on the direction
of rotation.
3. The ne adjustment screw aects the entire
modulation range. Therefore, once adjustment
is made, the valve outlet pressure must be
checked at both the minimum and maximum
extremes of the modulation range. (Refer to
the appliance manufacturer’s instructions.)
TURN SCREW
TO INCREASE /
DECREASE
OUTLET
PRESSURE
ACCESS PLUG - (PRESSURE
FINE ADJUSTMENT SCREW
IS LOCATED BENEATH PLUG)
1/8 - NPT OUTLET
PRESSURE TAP
(SOME MODELS)
.093 SOCKET HEAD
SCREW OUTLET
PRESSURE TAP
(SOME MODELS)
Fig. 6 – 36J27 Modulating Gas Valve
ON/OFF SWITCH
5
Loading...