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49SS-PRC003-EN
Wiring shown with dashed lines is to be
furnished and installed by the customer.
All customer- supplied wiring must be
copper only and must conform to local
electrical codes.
NOTE:
1. When electric heater accessory is
used, single point power entry or dual
point power entry is field optional.
Single point power entry option is
through electric heater only.
TTA050/TWE050A
Field Wiring:
A — 3 power wires. Line voltage for
3 phase, 2 wires for single phase.
B — 3 power wires. Line voltage for
3 phase, 2 wires for single phase.
C — Cooling only thermostat: 3 wires,
24 volts.
— One-stage electric heat: add
1 additional wire, 24 volts.
— Two-stage electric heat: add
2 additional wires, 24 volts.
D — 2 wires, 24 volts.
(2) TTA050/TWE100B
Field Wiring:
A — 3 power wires. Line voltage for
3 phase, 2 wires for single phase.
B — 3 power wires. Line voltage for
3 phase, 2 wires for single phase.
C — Cooling only thermostat: 4 wires,
24 volts.
— One-stage electric heat add
1 additional wire, 24 volts.
— Two-stage electric heat: add
2 additional wires, 24 volts.
D — 2 wires, 24 volts to outdoor
section ‘’A’’
— 2 wires, 24 volts to outdoor
section ‘’B’’
TTA075A/TWE075A;
TTA085/TWE075A;
TTA085/TWE100A;
TTA100A/TWE100A
Field Wiring:
A — 3 power wires, line voltage.
B — 3 power wires, line voltage for
3 phase; 2 wires for single phase.
C — Cooling only thermostat: 3 wires,
24 volts.
— One-stage electric heat: add
1 additional wire, 24 volts.
— Two-stage electric heat: add
2 additional wires; 24 volts.
D — 4 wires, 24 volts.
TTA100B/TWE100B
Field Wiring:
A — 3 power wires, line voltage.
B — 3 power wires, line voltage for
3 phase; 2 wires for single phase.
C — Cooling only thermostat: 4 wires,
24 volts.
— One-stage electric heat: add
1 additional wire, 24 volts.
— Two-stage electric heat: add
2 additional wires, 24 volts.
Jobsite
Connections
D — 5 wires, 24 volts.
TTA125B/TWE155B;
TTA155B/TWE155B;
TTA200B/TWE200B;
TTA155C/TWE155B
Field Wiring
A — 3 power wires, line voltage
B — 3 power wires, line voltage
C — Cooling only thermostat: 4 wires,
24 volts.
— One-stage electric heat: add
1 additional wire, 24 volts.
— Two-stage electric heat: add
2 additional wires, 24 volts.
D — 5 wires, 24 volts.
(2) TTA075A/TWE155B;
(2) TTA100A/TWE200B
Field Wiring:
A — 3 power wires, line voltage.
B — 3 power wires, line voltage.
C — Cooling only thermostat: 4 wires,
24 volts.
— One-stage electric heat: add
1 additional wire, 24 volts.
— Two-stage electric heat: add
2 additional wires, 24 volts.
D — 6 wires, 24 volts.