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FIVE WIRE
THREE-WIRE
HEATING-ONLY
BLOWER DOOR SWITCH
BLK
BLK
WHT
WHT
GND
AUXILIARY
115-V FIELD-
J-BOX
SUPPLIED
DISCONNECT
VOLTS---
HERTZ---
FURNACE SIZE
PHASE
30026A
115--- 60--- 1
30040A
115--- 60--- 1
36040B
115--- 60--- 1
36060A
115--- 60--- 1
42060B
115--- 60--- 1
48080B
115--- 60--- 1
60080C
115--- 60--- 1
60100C
115--- 60--- 1
66120D
115--- 60--- 1
66140D
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.
Time ---delay type is recommended.
{
Length shown is as measured one way along wire path between furnace and service panel for maximum 2 percent voltage drop.
}
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.
115- -V Wiring
Furnace must have a 115-v power supply properly connected and
grounded.
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, control LED status indicator light will flash
rapidly and furnace will NOT operate.
Verify that the voltage, frequency, and phase correspond to that
specified on unit rating plate. Also, check to be sure that service
NOTE 2
W
C
R
W
C
R
O
N
T
GND
R
G
O
COM
L
NOTE 1
Y
24-V
TERMINAL
BLOCK
NOTES:
FURNACE
Representative drawing only, some models may vary.
Fig. 32 - - Typical Single- -Stage Wiring Diagram
Table 11 – Electrical Data
OPERATING VOLTAGE
RANGE*
Maximum*
Minimum*
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
THERMOSTAT
G
Y
TERMINALS
CONDENSING
UNIT
TWO
WIRE
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.
MAXIMUM
UNIT
UNIT
AMPS
AMPACITY#
5.1
7.3
7
9.7
7.5
10.3
7.1
9.8
9.6
12.9
10
13.4
12.3
16.3
12.6
16.6
12.4
16.4
12.6
16.6
provided by utility is sufficient to handle load imposed by this
equipment. Refer to rating plate or Table 11 for equipment
electrical specifications.
U.S.A. Installations: Make all electrical connections in accordance
with the current edition of the National Electrical Code (NEC)
NFPA 70 and any local codes or ordinances that might apply.
Canada Installations: Make all electrical connections in
accordance with the current edition of the Canadian Electrical
Code CSA C22.1 and any local codes or ordinances that might
apply.
Use a separate, fused branch electrical circuit with a properly sized
fuse or circuit breaker for this furnace. See Table 11 for wire size
and fuse specifications. A readily accessible means of electrical
disconnect must be located within sight of the furnace
26
FIELD-SUPPLIED
DISCONNECT
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
GND
MINIMUM
MAXIMUM
MAXIMUM
WIRE
WIRE
FUSE OR CKT
SIZE
LENGTH
AWG
FT (M)}
14
50 (15.5)
14
38 (11.7)
14
36 (10.9)
14
38 (11.5)
14
28 (8.7)
14
27 (8.4)
12
35 (10.7)
12
34 (10.5)
12
35 (10.7)
12
34 (10.5)
A190079
BKR
AMPS{
15
15
15
15
15
15
20
20
20
20
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