Fan and Heater
Adjustment
Adjust the valve
When the handle is turned in (clockwise) a high bulb temperature is required to close the valve. Turn the handle ou (counterclockwise) when a lower temperature is desired.
The operator can set the valve to be fully closed at any temperature within its range. The gage on the V50B valves is an integral lpart of the temperature sensing element and helps the operator make accurate settings.
Checkout Procedure
Check for gas leaks with a soap solution at the piping connections and around valve gaskets.
Check for minimum fire
next larger orifice from kit
Before leaving the installation, observe at least three complete operating cycles to be sure that all components are functioning correctly. Gas pres- sure through the valve should be verified by an accurate gage.
Repairs and Replacement
The internal parts, orifice plug, diaphargms and sensing elements may be replaced. Other field repairs must not be made. When ordering a re- placement valve or sensing element, specify Product Number shown on valve. Replacement parts and valves may be obtained through the nearest Johnson Controls wholesaler.
CAUTION: Check all joints for leaks with a soap solution after valve has been repaired.
Replacement Parts
Valve Size | Valve Renewal | Diaphragm | Orifice | |
Kit* | Kit | Plug Kit | ||
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1/2* | ||||
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3/4* | ||||
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1* | ||||
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1 1/4* | ||||
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*Includes deat, disc, diaphragms and all internal parts to reconditon valve.
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