Honeywell Q539F - Manual (Page 4)

Table 1 (continued)
MODEL AND DESCRIPTION
SYSTEM
SWITCHING
(dpst and dp3t)
FAN
SWITCHING
(spdt)
SUBBASE TERMINALS WIRING
DIAGRAM R W Y B G O X p z Rc R-
Q539J1022 is the same as
Q539J1006 for use in W884E
Comfort Control Center only. COOL-OFF-HEAT ON-AUTO X X X X X X X Fig. 11
Q539P1018 with wiring terminals
and indicator LED for heating-
only oil burner applications. NONE NONE X X X Fig. 12
“Subbase has “4" terminal which is same as “B" terminal.
’’Rj,terminal for cooling transformer.
“Designer model with textured beige finish.
‘‘Subbase has "1" terminal in place of "Z" terminal.
TABLE 2—TERMINAL DESIGNATIONS“.
TERMINAL CONNECTION
R Transformer.
Cooling transformer.
Heating transformer.
w Heating Relay or Valve.
Y Cooling Contactor.
B9(4)« Heating Damper Motor or Changeover
Valve (if used).
O® Cooling Damper Motor or Changeover
Valve.
G Fan Relay Coil.
X' Clogged Filter Switch or Lockout Switch
(primary control).
P Heat Pump Contactor Coil.
Z Q539H low voltage fan switch for
control of fan relay in AUTO position for
both heating and cooling control.
R1, W1, Y1, (or B1) are not marked on thermostat
subbase. They are mounting posts and electrical con­
nections for thermostat.
Cooling transformer in systems with isolated heating
and cooling circuits.
Heating transformer in systems with isolated heating
and cooling circuits.
Circuit only completed between "R” and "B” with system
switch in HEAT position: “4” terminal is the same as
Honeywell “B” terminal.
Circuit only completed between “R” and “O” with system
switch in COOL position.
Only available on subbases with indicator lights.
Jumpered to humidity controller in Q539K/T87F
hookup.
INSTALLATION
WHEN INSTALLING THIS PRODUCT...
1. Read these instructions carefully. Failure to follow
instructions can damage product or cause a hazardous
condition.
2. Check ratings given in instructions and on product to
make sure product is suitable for your application.
3. Make sure installer is a trained, experienced service
technician.
4. After completing installation, use these instructions
to check out product operation.
CAUTION
1. Disconnect power supply before beginning in­
stallation to prevent electrical shock or equip­
ment damage.
2. On systems using a low voltage gas control,
never apply a jumper across the control coil
terminals. This may burn out the thermostat heat
anticipator.
LOCATION
Locate the subbase about 5 ft [1.5 m] above the floor in
an area with good air circulation at average temperature.
Do not mount the subbase where it may be affected
by—
— drafts or dead spots behind doors or in corners.
— hot or cold air from ducts.
— radiant heat from the sun, fireplaces, or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas behind the subbase,
such as an outside wall.
MOUNTING AND WIRING
Disconnect power supply before beginning installation
to prevent electrical shock or equipment damage.
All wiring must comply with local codes and ordinances.
1. In replacement applications, check the existing sub­
base wires for cracked or frayed insulation. Replace any
wires in poor condition. If the wire is plastered into the wall,
make a hole next to the wires and loosen the wires so that