Sears 1F86-382 - Manual (Page 3)

JUMPER
WIRE
0-0 -0-(p---(^-(R^^
For 2-wire Heat only,
attach to RH and W
Fan Heating
Relay System
THERMOSTAT
SYSTEM
Hot
120 VAC
Neutral
TRANSFORMER
Figure 2.Typical wiring diagram for
heat only, 3-wire, single transformer systems
JUMPER
WIRE
Figure 3. Typical wiring diagram for
cool only, 3-wire, single transformer systems
Figure 5. Typical wiring diagram for
heat/cool, 5-wire, two-transformer systems
JUMPER
WIRE
JUMPER
WIRE
Reversing Compressor Fan
Valve* Contactor Relay
THERMOSTAT
SYSTEM
Reversing valve is energized when the
system switch is in the COOL position
Hot
120 VAC
'Jeutral
TRANSFORMER
Figure 6. Typical wiring diagram for heat pump
with reversing valve energized in COOL
RED jumper wire (provided with thermostat) must be
connected between thermostat RH and RC terminals
for proper thermostat operation with this system
JUMPER
WIRE
thermostat
“ < w --------------
Y W SYSTEM
Cooling Fan Heating
System Relay System Hot
120 VAC
'Jeutral
transformer
Figure 4. Typical wiring diagram for
heat/cool, 4-wire, single transformer systems
JUMPER
WIRE
JUMPER
WIRE
Reversing Compressor Fan
Valve* Contactor Relay
THERMOSTAT
SYSTEM
Reversing valve is energized when the
system switch is in the HEAT position
Hot
120 VAC
vleutral
TRANSFORMER
Figure 7. Typical wiring diagram for heat pump
with reversing valve energized in HEAT
t The 24 Volt neutral connection to terminal C on the thermostat is not required if the batteries are replaced once a year
with fresh premium brand alkaline batteries.
Heating System
1. Move SYSTEM switch to HEAT position. If the heating system
has a standing pilot, be sure to light it.
2. Press to adjust thermostat setting above room tempera­
ture. The heating system should begin to operate.
3. Press (2) to adjust temperature setting below room tem­
perature. The heating system should stop operating.
Cooling System
A CAUTION
To prevent compressor and/or property damage, if the
outdoor temperature is below 50°F, DO NOT operate the
cooling system.
Move SYSTEM switch to COOL position.
Press to adjust thermostat setting below room tempera­
ture. The blower should come on immediately on high
speed, followed by cold air circulation
Press to adjust temperature setting above room tem­
perature. The cooling system should stop operating.