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916SA: Installation, Start-up, Operating and Service and Maintenance Instructions
Gas Pipe Grommet
For direct vent (2-pipe) applications, the opening for the gas pipe must
be sealed to prevent air leakage. Remove the knockout or plug, install
the grommet in the hole, then insert the gas pipe. The grommet is
included in the loose parts bag. See
CAUTION
!
FURNACE MAY NOT OPERATE HAZARD
Failure to follow this caution may result in intermittent furnace
operation.
Furnace control must be grounded for proper operation or else control
will lock out. Control must remain grounded through green/yellow wire
routed to gas valve and manifold bracket screw.
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 disconnection.
Reconnect wires correctly.
-
Verify proper operation after servicing.
-
Always reinstall access doors after completing service and
maintenance.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Blower door switch opens 115-V power to control. No component
operation can occur. Do not bypass or close switch with blower door
removed.
See
Fig. 33
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.
VOLTS-
FURNACE
HERTZ-
SIZE
PHASE
30026M14
115-60-1
30040M14
115-60-1
36040M17
115-60-1
36060M14
115-60-1
48060M17
115-60-1
48080M17
115-60-1
60080M21
115-60-1
60100M21
115-60-1
66100M21
115-60-1
66120M24
115-60-1
66140M24
115-60-1
*. Permissible limits of the voltage range at which the unit operates satisfactorily.
†. Unit ampacity = 125 percent of largest operating component's full load amps plus 100 percent of all other potential operating components' (EAC, humidifier, etc.) full load
amps.
‡. Length shown is as measured one way along wire path between furnace and service panel for maximum 2 percent voltage drop.
**. Time-delay type is recommended
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Fig.
30.
Table 11 – Electrical Data
OPERATING VOLTAGE
MAXIMUM
*
RANGE
Maximum
Minimum
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
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 NEC NFPA 70 or local codes to minimize personal injury
if an electrical fault should occur. In Canada, refer to Canadian
Electrical Code CSA C22.1. 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.
FIRE HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
Do not connect aluminum wire between disconnect switch and furnace.
Use only copper wire. See
FIVE WIRE
THREE-WIRE
HEATING-ONLY
BLOWER DOOR SWITCH
BLK
BLK
WHT
WHT
GND
GND
AUXILIARY
115-V FIELD-
J-BOX
SUPPLIED
DISCONNECT
FURNACE
Fig. 33 – Typical Field Wiring Diagram
ELECTRIC
DISCONNECT
SWITCH
Fig. 34 – Field-Supplied External Electrical Box on Furnace Casing
UNIT
UNIT
†
AMPACITY
AMPS
5.2
7.5
7.0
9.7
7.4
10.2
7.1
9.8
10.1
13.6
10.0
13.4
13.1
17.3
12.6
16.7
12.5
16.5
13.2
17.4
12.6
16.7
25
WARNING
!
WARNING
!
Fig.
34.
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
NOTE 2
THERMOSTAT
W
C
R
G
Y
FIELD-SUPPLIED
TERMINALS
DISCONNECT
W
C
R
O
N
T
R
G
O
L
COM
NOTE 1
CONDENSING
Y
UNIT
TWO
24-V
WIRE
TERMINAL
BLOCK
NOTES:
1.
Connect Y-terminal in furnace as shown for proper blower 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.
COPPER
WIRE ONLY
ALUMINUM
WIRE
MINIMUM
MAXIMUM
WIRE SIZE
WIRE LENGTH
‡
AWG
FT (M)
14
50 (15.2)
14
38 (11.7)
14
36 (11.1)
14
38 (11.5)
14
27 (8.3)
14
27 (8.4)
12
33 (10.1)
12
34 (10.5)
12
34 (10.6)
12
33 (10.0)
12
34 (10.5)
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
GND
A190079
A190279
MAXIMUM FUSE
OR CKT BKR
**
AMPS
15
15
15
15
15
15
20
20
20
20
20
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