Honeywell Q539F User Manual
Page 8
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PROTECTION AS REQUIRED.
És
^JUMPER FOR AUTO FAN IN ELECTRIC HEAT APPLICATIONS. IF
JUMPER IS USED. MEASURE COMBINED “HEAT RELAY" AND
"FAN RELAY" CURRENT RATINGS.
A
3\ RECOMMENDED HEAT ANTICIPATOR SETTING IS THE COMBINED
CURRENT DRAW OF THE FAN RELAY AND HEAT RELAY AS THE FAN
RELAY CURRENT PASSES THROUGH THE HEAT ANTICIPATOR.
M2162
SWITCH
HEATING
COOLING
RELAY OR
CON-
VALVE
TACTOR
I______________________
FAN
RELAY
EXTERNAL
SWITCHING
FOR
AUTO FAN
Fig. 9—Q539G IN HEATING APPLICATION
AUTOMATIC FAN OPERATION.
WITH
A X TERMINAL IS USED ON 0539 MODELS WITH FACTORY-!NSTAUED
INDICATOR LED.
A POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
Fig. 10—Q539H IN HEATING-COOLING APPLICATION
AND
AUTOMATIC
FAN
OPERATION
SWITCHING.
A
A
^1\ X TERMINAL IS USED ON Q539 MODELS WITH FACTORY-INSTALLED
INDICATOR LED.
A
WITH NO O TERMINAL LOAD. THERMOSTAT CURRENT DURING HEATING
CYCLE VARIES DEPENDING ON WHETHER FAN SWITCH IS IN THE ON OR
AUTO POSITION. HEATER SHOULD BE SET FOR COMBINED CURRENT
LEVEL OF HEAT RELAY AND FAN RELAY COILS. WITH O TERMINAL
LOAD. SET THERMOSTAT HEAT ANTICIPATOR TO ITS MAXIMUM
SETTING AS COOLING ANTICIPATOR IN SERIES WITH 0 TERMINAL
LOAD PROVIDES HEAT ANTICIPATION IN THE HEATING CYCLE. (LIMIT
THE THERMOSTAT HEATING LOAD CURRENT TO 0.8 AMPS TO ASSURE
GOOD PERFORMANCE.)
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
Fig. 11—Q539J IN HEATING-COOLING APPLICATION WITH AUTO FAN OPERATION.