White Rodgers 1F57-312 - Manual (Page 2)

COOLING ANTICIPATION
The cooling anticipator for the 1st stage of cooling is a fixed
non-removable heater. It is for use on current draws from 0 to
1.5 Amp.
OPERATION
The chart at right shows the
different system functions with
the System and Fan Selector
switches in various positions.
1 Shows Po»itioii of Switchos
PAN
□ □
AUTO ON
STSTiM
□ □ □
COOi Off NEAT
OPERATION
■ □ □ ■ □
No heating, no cooling, no fan.
□ ■ □ ■ □
No heating, no cooling, but fan runs continuously.
□ ■ ■ □ □
Cooling system cycles from thermostat.
Fan runs continuously.
■ □ ■ □ □
Cooling system and fan cycle from thermostat.
■ □ □ □ ■
Heating system and fan cycle from thermostat.
□ ■ □ □ ■
Heating system turns on and off from thermostat.
Fan runs continuously.
WIRING
All wiring should be done according to local and National electrical codes and ordinances.
S.P.D.T. MERCURY SWITCH S.P.D.T. MERCURY SWITCH
Internal Wiring
of 1F57-312
In "OFF" position,
system switch breaks
both heating and
cooling control voltage
circuits.
TRANSFORMER