Table of Contents
Advertisement
TYPICAL WIRING DIAGRAM NOTES
(SEE FIGURES 14 THRU 17)
1.
All field wiring to be accomplished following city, local
and/or national codes in effect at time of installation of
this unit.
2.
Caution: Label all wires prior to disconnection when ser-
vicing controls. Wiring errors can cause improper and
dangerous operation. If any of the wire as supplied with
this unit must be removed it must be replaced with type
105°C, 600V wire or equivalent clearly renumbered for
identification. Verify proper operation after servicing.
3.
Motors inherently protected.
4.
Factory wired for 460V operation.
5.
See unit nameplate for maximum fuse size and/or circuit
breaker size and minimum circuit ampacity.
6.
If both LR and ASCT are present, wire 801/BL and 805/
BL are connected to ASCT-3. If only LR is present wire
801/BL and 805/BL are connected to M1 coil. If only
ALS
ASCT
BR
CB
CCH
COMPR
DM
FCB
GND
FS
HP
IDFAN
LP
LS
LR
M1
ODFAN
PS
RC1 / RC2
RS
TB4
T1
T2
FIGURE 18 - TYPICAL WIRING DIAGRAM LEGEND
28
ASCT is present wire 202/Y is connected to ASCT-3. If
neither LR or ASCT are present, wire 202/Y is connected
to M1 coil as shown.
7.
Shunt contact also used with crankcase heater.
(optional)
8.
Unit factory wired for low or medium speed indoor blower
operation. To change motor speed, connect speed tap
wires from indoor blower motor, per Detail A (Figure 19).
Tape unused speed tap wires to prevent shorting and
secure.
9.
Select indoor blower speed to remain within the temper-
ature rise range on the nameplate in heating.
Open all disconnects before servicing this unit.
LEGEND
AUXILARY LIMIT SWITCH
ANTI-SHORT CYCLE TIMER (OPTIONAL)
BLOWER RELAY
CIRCUIT BREAKER
CRANK CASE HEATER (OPTIONAL)
COMPRESSOR
DRAFT MOTOR
FAN CONTROL BOARD
GROUND
FREEZE STAT SWITCH (OPTIONAL)
HIGH PRESSURE SWITCH OPENS @ 380 PSIG
INDOOR FAN MOTOR
LOW PRESSURE SWITCH OPENS @ 7 PSIG
LIMIT SWITCH
LOCK OUT RELAY (OPTIONAL)
CONTACTOR, COMPR. AND OD FAN
OUTDOOR FAN MOTOR
PRESSURE SWITCH
COMPRESSOR START & OUTDOOR FAN RUN CAPACITOR
ROLLOUT SWITCH
TERMINAL BLOCK
TRANSFORMER, 24V, 230V
TRANSFORMER, 460V / 575V
291627-YTG-B-0807
Unitary Products Group
Hide quick links:
Advertisement
Table of Contents
