Page 6
DISCONNECT
SWITCH
MAIN FUSE
BOX/BREAKER
PANEL
Refer to the unit nameplate for minimum circuit ampacity amperage
minimum, and maximum fuse or circuit breaker fusible (HACR per
NEC). Install power wiring and properly sized disconnect switch.
NOTE — ANY EXCESS HIGH VOLTAGE
FIELD WIRING SHOULD BE TRIMMED
AND SECURED AWAY FROM ANY LOW
VOLTAGE FIELD WIRING.
NOTE — UNITS ARE APPROVED FOR USE ONLY WITH COPPER CONDUCTORS.
GROUND UNIT AT DISCONNECT SWITCH OR TO AN EARTH GROUND.
CIRCUIT SIZING AND DISCONNECT SWITCH
TYPICAL HIGH VOLTAGE POWER SUPPLY
CONNECTIONS
USE THE LEFT CUTOUT TO ROUTE
HIGH VOLTAGE WIRING TO THE K1
CONTACTOR ON THE TPA 090S AND
120S MODELS.
CONTROL BOX
HIGH VOLTAGE WIRING
K1 CONTACTOR
LEFT CUTOUT
CONNECT EARTH GROUND TO
GROUND LUG
GROUND LUG
1
2
Install room thermostat (ordered separately) on an inside wall
approximately in the center of the conditioned area and 5 feet (1.5m)
from the floor. It should not be installed on an outside wall or where it
can be affected by sunlight, drafts or vibrations.
Install low voltage wiring from outdoor to indoor unit and from
thermostat to indoor unit as illustrated.
THERMOSTAT
5 FEET
(1.5M)
INSTALL THERMOSTAT
TYPICAL CONTROL WIRING
TPA HEAT
PUMP
C1
W1
C
R
C1
C
RO
TAA AIR
HANDER
Y1
C
R
A2
THERMOSTAT
RT2 REMOTE
SENSOR
S2
S1
W2
W
W2
W1
W2
3
4
NOTE — FOR PROPER VOLTAGES, SELECT THERMOSTAT WIRE (CONTROL
WIRES) GAUGE PER TABLE ABOVE.
WIRE RUN LENGTH
AWG# INSULATION TYPE
LESS THAN 100' (30 METERS)
18 TEMPERATURE RATING
MORE THAN 100' (30 METERS)
16 35ºC MINIMUM.
TYPICAL UNIT LOW VOLTAGE CONNECTIONS
NOTE — DO NOT BUNDLE ANY EXCESS 24VAC CONTROL WIRES INSIDE
CONTROL BOX.
NOTE — WIRE TIE PROVIDES LOW VOLTAGE WIRE STRAIN RELIEF AND TO MAINTAIN
SEPARATION OF FIELD INSTALLED LOW AND HIGH VOLTAGE CIRCUITS.
A
Run control wires through right cutout.
B
Run control wires through wire ties.
C
Make control wire connections using field
provided wire nuts. See figure 3 for
connections requirements.
D
Tighten wire tie to secure 24V low voltage
control wiring.
TIGHTEN WIRE TIES
RIGHT CUTOUT
ROUTE THROUGH WIRE TIES
K1 CONTACTOR
LOW VOLTAGE CONTROL
WIRING
HIGH VOLTAGE WIRING
WIRE NUTS
EARTH GROUND CONNECTION
CONTROL BOX
A
B
D
C
5
