Table of Contents
Advertisement
BLOWER OFF-DELAY
24-V THERMOSTAT
TERMINALS
3-AMP FUSE
LED OPERATION &
DIAGNOSTIC LIGHT
115-VAC(L2)NEUTRAL
CONNECTIONS
BLOWER SPEED
SELECTION TERMINALS
VOLTS—
FURNACE
HERTZ—
SIZE
PHASE
040-08
115-60-1
040-12
115-60-1
060-08
115-60-1
060-12
115-60-1
060-16
115-60-1
080-12
115-60-1
080-16
115-60-1
080-20
115-60-1
100-16
115-60-1
100-20
115-60-1
120-20
115-60-1
140-20
115-60-1
* Permissible limits of voltage range at which unit will operate 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 a measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
** Time-delay type is recommended.
NOTE: Furnace combustion-air and vent pipe connections are
sized for 2-in. pipe. Any pipe size change should be made outside
furnace casing in vertical pipe. (See Fig. 32.) This allows proper
drainage of vent condensate.
Combustion-air and vent pipes must terminate together in same
atmospheric pressure zone, either through roof or sidewall (roof
termination preferred), using accessory termination kit.
See Table 5 for required clearances.
TWINNING AND/OR
COMPONENT TEST
BLOWER OFF-DELAY
TEST/TWIN
HUM
0.5 AMP@24VAC
FUSE 3-AMP
SEC-2 SEC-1
EAC-2
L2
COOL
HEAT
FAN
SPARE-1 SPARE-2
EAC-1
SPARE-1
SPARE-2
FAN
EAC-1 TERMINAL
(115-VAC 1.0 AMP MAX.)
Fig. 31—Furnace Control
Table 4—Electrical Data
OPERATING
VOLTAGE RANGE
Max*
Min*
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
127
104
TERMINAL
1-AMP@
PR-1
115VAC
PL2
1
115 VAC (L1) LINE
VOLTAGE CONNECTION
MAX
UNIT
UNIT
AMPACITY†
AMPS
6.1
8.4
7.3
10.0
6.1
8.4
7.1
9.8
9.5
12.8
7.6
10.4
10.0
13.4
14.1
18.4
10.2
13.5
14.8
19.3
14.6
19.1
14.3
18.8
Furnace combustion-air and vent pipe connections must be at-
tached as shown in Fig. 33. Combustion-air intake plug fitting and
inducer housing alternate vent cap may need to be relocated in
some applications.
NOTE: Slope combustion-air and vent pipes downwared toward
furnace a minimum of 1/4 in. per linear ft with no sags between
hangers.
24
HUMIDIFIER TERMINAL
(24-VAC 0.5 AMP MAX.)
TRANSFORMER 24-VAC
CONNECTIONS
PL1-LOW VOLTAGE MAIN
HARNESS CONNECTOR
PL2-HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
MIN
MAX WIRE
WIRE
LENGTH
SIZE
(FT)‡
14
44
14
37
14
44
14
38
14
29
14
36
14
28
12
31
14
27
12
30
12
30
12
30
A02142
MAX FUSE
OR CKT BKR
AMPS**
15
15
15
15
15
15
15
20
15
20
20
20
Hide quick links:
Advertisement
Table of Contents
