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F80CSU and G80CSU: Installation, Start–Up, Operating and Service and Maintenance Instructions
GAS
SUPPLY
MANUAL
SHUTOFF
VALVE
(REQUIRED)
SEDIMENT
TRAP
UNION
Fig. 22 – Typical Gas Pipe Arrangement
ELECTRICAL CONNECTIONS
WARNING
!
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings could result in dangerous operation,
serious injury, death or property damage.
Improper servicing could result in dangerous operation, serious injury,
death or property damage.
- Before servicing, disconnect all electrical power to furnace.
- When servicing controls, label all wires prior to disconnecting.
Reconnect wires correctly.
- Verify proper operation after servicing.
BLK
BLK
WHT
WHT
GND
115-VOLT FIELD-
SUPPLIED
FUSED
DISCONNECT
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
NOTE 2
W
FIVE
WIRE
THREE-WIRE
HEATING-
ONLY
W2
COM
W/W1
NOTE 1
Y/Y2
JUNCTION
BOX
R
CONTROL
G
BOX
24-VOLT
TERMINAL
BLOCK
FURNACE
Fig. 23 – Heating and Cooling Application Field Wiring Diagram
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Blower access panel door switch opens 115-v power to control. No
component operation can occur. Do not bypass or close switch with
panel removed.
See
Fig. 23
for field wiring diagram showing typical field 115-v wiring.
Check all factory and field electrical connections for tightness.
Field-supplied wiring shall conform with the limitations of 63°F (35°C)
rise.
A02035
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
The cabinet MUST have an uninterrupted or unbroken ground
according to current edition of NEC NFPA 70 or local codes to
minimize personal injury if an electrical fault should occur. This may
consist of electrical wire, conduit approved for electrical ground or a
listed, grounded power cord (where permitted by local code) when
installed in accordance with existing electrical codes. Refer to the
power cord manufacturer's ratings for proper wire gauge. Do not use
gas piping as an electrical ground.
1-STAGE
THERMOSTAT
C
Y
R
G
TERMINALS
CONDENSING
UNIT
NOTES: 1.
Connect Y/Y2-terminal as shown for proper operation.
2.
Some thermostats require a "C" terminal connection as shown.
3.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
14
WARNING
!
WARNING
!
FIELD 24-VOLT WIRING
FIELD 115-, 208/230-, 460-VOLT WIRING
FACTORY 24-VOLT WIRING
FACTORY 115-VOLT WIRING
FIELD-SUPPLIED
FUSED DISCONNECT
208/230- OR
460-VOLT
THREE
PHASE
208/230-
VOLT
SINGLE
PHASE
GND
A95236
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