Table of Contents
Advertisement
FIVE WIRE
THREE-WIRE
HEATING-ONLY
BLOWER DOOR SWITCH
BLK
BLK
WHT
WHT
GND
AUXILIARY
115-V FIELD-
J-BOX
SUPPLIED
DISCONNECT
VOLTS—
UNIT SIZE
HERTZ—
PHASE
070-08
115—60—1
070-12
115—60—1
091-14
115—60—1
111-16
115—60—1
136-20
115—60—1
155-20
115—60—1
* Permissible limits of the voltage range at which the unit operates satisfactorily.
† Time-delay type is recommended.
‡ Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
jurisdiction. For Canadian installations, all electrical connections
must be made in accordance with CSA C22.1 Canadian Electrical
Code, or authorities having jurisdiction..
The cabinet MUST have an uninterrupted or unbroken ground
according to NEC, ANSI/NFPA 70-1999 and Canadian
Electrical Code, CSA C22.1 or local codes to minimize
personal injury if an electrical fault should occur. This may
consist of electrical wire or conduit approved for electrical
ground when installed in accordance with existing electrical
codes. Do not use gas piping as an electrical ground. Failure
to follow this warning could result in electrical shock, fire, or
death.
The auxiliary junction box (J-box) can be moved to the left-hand
side of the furnace when a left-side power supply is desired.
Remove the 2 screws holding the auxiliary J-box. Mount the J-box
on the left-hand side of the furnace (holes have been pre-drilled in
casing). When moved, tuck the wiring harness behind the clip
provided to keep extra wire lengths out of the way.
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, the furnace control status code indicator light
NOTE 2
W
C
R
W
C
R
O
N
T
GND
R
G
O
C
L
NOTE 1
Y
24-V
TERMINAL
BLOCK
NOTES:
FURNACE
Fig. 9—Heating and Cooling Application Wiring Diagram
Table 5—Electrical Data
OPERATING
VOLTAGE RANGE
UNIT AMPS
Maximum*
Minimum*
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
MINIMUM
WIRE GAGE
5.9
14
8.7
14
9.0
14
10.1
14
13.3
12
14.0
12
will flash rapidly and the furnace will not operate.
24-V WIRING
Make field 24-v connections at the 24-v furnace thermostat
terminals. (See Fig. 10.) Connect terminal Y as shown in Fig. 9 for
proper cooling operation. Use only AWG No. 18, color-coded,
copper thermostat wire.
The 24-v circuit contains an automotive-type, 3-amp fuse located
on the furnace control. Any direct shorts during installation,
service, or maintenance could cause this fuse to blow. If fuse
replacement is required, use ONLY a 3-amp fuse of identical size.
ACCESSORIES
→
1. Electronic Air Cleaner (EAC)
Two quick-connect terminals marked EAC-1 and EAC-2 are
provided for EAC connection. (See Fig. 10.) These terminals
are energized with 115-v, (1.5-amp maximum) during blower
motor operation.
→
2. Humidifier (HUM)
A quick-connect terminal (HUM) and screw terminal (C
are provided for 24-v humidifier connection. (See Fig. 11).
HUM terminal is energized with 24v (0.5-amp maximum)
after pressure switch closes.
9
FIELD-SUPPLIED
DISCONNECT
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
GND
MAXIMUM FUSE
MAXIMUM
OR CKT BKR
WIRE LENGTH (FT)‡
47
32
31
28
33
31
A98521
AMPS†
15
15
15
15
20
20
)
OM
Advertisement
Table of Contents
