—
2
—
NOTES FOR FIG. 1 AND 2
1. If any of the original wire furnished must be replaced, it must be
replaced with type 90° C wire or its equivalent.
2. Thermostats: HH07AT170, 172, & 174
Subbase HH93AZ176, 177, & 179.
3. Sealed VA for IFC and LLSV is not to exceed 22.
4. Use copper conductors only.
5. TRAN is wired for 230 v unit. If unit is to be run with 208 v power
supply, disconnect BLK wire from 230 v tap and connect to 208 v
tap.
6. Three-phase motors are protected under primary single phasing
conditions.
NOTES FOR FIG. 3, 4, 7, 8, 11, 12
1. If any of the original wire furnished must be replaced, it must be
replaced with type 90° C wire or its equivalent.
2. Thermostat: HH07AT170, 172, & 174
Subbase: HH93AZ176, 177, & 179.
3. Sealed VA for IFC and LLSV is not to exceed 22.
4. Use copper conductors only.
5. Three-phase motors are protected under primary single phasing
conditions.
NOTES FOR FIG. 5, 6, 9, 10
1. If any of the original wire furnished must be replaced, it must be
replaced with type 90° C wire or its equivalent.
2. Thermostat: HH07AT170, 172, & 174
Subbase: HH93AZ176, 177, & 179.
3. Sealed VA for IFC and LLSV is not to exceed 22.
4. Use copper conductors only.
5. TRAN is wired for 230 v unit. If unit is to be run with 200 v power
supply, disconnect BLK wire from 230 v tap and connect to 200 v
tap.
6. Three-phase motors are protected under primary single phasing
conditions.
NOTES FOR FIG. 13 AND 14
1. If any of the original wire furnished must be replaced, it must be
replaced with type 90° C wire or its equivalent.
2. Thermostat: HH07AT170, 172, 174 & P272-2783
Subbase: HH93AZ176, 178 & P272-1882, 1883 or HH93AZ177 &
179.
3. Sealed VA for IFC and LLSV is not to exceed 22.
4. Use copper conductors only.
5. If TRAN is wired for 230 v unit and unit is to be run with 200 v
power supply, disconnect BLK wire from 230 v tap and connect to
200 v tap.
6. If TRAN is wired for 460-3-60 v and unit is to be run with 400-3-50 v
power supply, disconnect BLK wire from 460 v tap and connect to
400 v tap.
7. Three-phase motors are protected under primary single phasing
conditions.
NOTES FOR FIG. 15 AND 16
1. If any of the original wire furnished must be replaced, it must be
replaced with type 90° C wire or its equivalent.
2. Thermostat: HH07AT170, 172, 174 & P272-2783
Subbase: HH93AZ176, 178 & P272-1882, 1883 or HH93AZ177 &
179.
3. Sealed VA for IFC and LLSV is not to exceed 22.
4. Use copper conductors only.
5. Three-phase motors are protected under primary single phasing
conditions.
NOTES FOR FIG. 17
1. Fan motors are thermally protected — three-phase motors are pro-
tected against primary single phasing conditions.
2. If any of the original wire furnished must be replaced, it must be
replaced with type 90° C wire or its equivalent.
3. Terminal Block 2 (TB2) is for field external control connections,
Class 2 wiring: supply voltage at TB2 is 24 vac.
Maximum power available at TB2 is 31.5 va.
4. Field-supplied component ratings:
IFC sealed coil rating (24 vac) 12 va max.
LLS sealed coil rating (24 vac) 18 va max.
Minimum thermostat electrical rating is 120 va
(5 amp — 24 vac)
Minimum fan switch electrical rating is 60 va
(2.5 amp — 24 vac)
5. LLS, liquid line solenoid, controlled by TC2, activates one half of
evaporator for capacity control feature.
6. Use copper, copper-clad aluminum or aluminum conductors for
field power supply only.
7. Insulate unused lead when changing tap for 208 volt use.
8. For field wiring “use 60 degree Centigrade rated wire”.
VOLTAGE
RATING
CB MUST
TRIP
AMPS
Mfg. Part No.
24 V
Potter & Brumfield
3.2
W28X-1024-3.2
VOLTAGE
RATING
CB MUST
TRIP
AMPS
Mfg. Part No.
24 V
Potter & Brumfield
3.2
W28X-1024-3.2
VOLTAGE
RATING
CB MUST
TRIP
AMPS
Mfg. Part No.
24 V
Potter & Brumfield
3.2
W28X-1024-3.2
(10 Seiten)
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