White Rodgers 36J27-554 installation instructions Adjustment, 36J27 Valve Features

INSTALLATION

ELECTRICAL

5 PIN CONNECTOR

PIN 1

LOCATION

INLET

PRESSURE

TAP POST

	REGULATOR
VALVE INLET	VENT

OUTLET

PRESSURE TAP POST

Electrical 5 PIN Connector Pin Out

VALVE 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 fine adjustment is possible by removing the access plug and turning the fine-adjustment screw with a 1/8" flat 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 reseal- ing (refer to Notes and Fig. 6 below).

Notes:

1.The maximum outlet pressure adjustment using the fine adjustment screw is approximately

±15% from the original factory setting.

2.The fine adjustment screw has 16 detents and can be rotated infinitely 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 fine adjustment screw affects 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 /	ON/OFF SWITCH
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

5