2. Humidifier (HUM)
Screw terminals (HUM and C) are provided for 24-v humidifier connection. The terminals are energized with 24v (0.5-amp maximum) after
inducer motor prepurge period.
NOTE:
A field-supplied, 115-v controlled relay connected to EAC terminals may be added if humidifier operation is desired during blower
operation.
Fig. 12—EAC Terminals on Control Board
A93053
Fig. 13—Heating and Cooling Application Wiring Diagram
A78461
115-VOLT FIELD-
SUPPLIED
FUSED
DISCONNECT
AUXILIARY
J-BOX
CONTROL
BOX
24-VOLT
TERMINAL
BLOCK
TWO-WIRE
HEATING-
ONLY
FOUR
WIRE
FIELD-SUPPLIED
FUSED DISCONNECT
CONDENSING
UNIT
TWO
WIRE
FURNACE
R
G
C
W
R
G
Y
GND
GND
FIELD 24-VOLT WIRING
FIELD 115-, 208/230-, 460-VOLT WIRING
FACTORY 24-VOLT WIRING
FACTORY 115-VOLT WIRING
NOTE:
208/230- OR
460-VOLT
THREE
PHASE
208/230-
VOLT
SINGLE
PHASE
WHT
BLK
WHT
BLK
If any of the original wire,
as supplied, must be replaced, use
same type or equivalent wire.
NOTE: Connect Y-terminal as
shown for proper
operation.
W
Y
GND
THERMOSTAT
TERMINALS
Table 6—Electrical Data
UNIT SIZE
VOLTS—
HERTZ—
PHASE
OPERATING VOLTAGE RANGE
MAXIMUM
UNIT AMPS
MINIMUM
WIRE GAGE
MAXIMUM WIRE
LENGTH FT‡
MAXIMUM
FUSE OR HACR-
TYPE CKT BKR
AMPS†
Maximum*
Minimum*
024050
115—60—1
127
104
6.6
14
42
15
036050
115—60—1
127
104
8.1
14
34
15
024070
115—60—1
127
104
6.7
14
42
15
036070
115—60—1
127
104
8.4
14
33
15
036095
115—60—1
127
104
9.2
14
30
15
048095
115—60—1
127
104
10.2
14
28
15
048115
115—60—1
127
104
10.1
14
28
15
060115
115—60—1
127
104
13.3
12
33
20
060135
115—60—1
127
104
14.3
12
31
20
* Permissible limits of the voltage range at which the unit will operate satisfactorily.
† Time-delay fuse is recommended.
‡ Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
—12—
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