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VOLTS---
FURNACE
HERTZ---
SIZE
PHASE
045---08/02404
115--- 60---
045---12/03604
5
115--- 60---
1
070---08/02407
5
115--- 60---
1
070---12/03607
0
115--- 60---
1
070---16/04807
0
115--- 60---
1
090---14/04209
0
115--- 60---
1
090---16/04809
0
115--- 60---
1
090---20/06009
0
115--- 60---
1
110---12/03611
0
115--- 60---
1
110---16/04811
0
115--- 60---
1
110---22/06611
0
115--- 60---
1
135---16/04813
0
115--- 60---
1
135---22/06613
5
115--- 60---
1
155---20/06015
5
115--- 60---
1
* Permissible limits of the voltage range at which the unit operates satisfactorily.
5
1
# 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 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
9. Route field ground wire through holes in electrical box
and casing, and into furnace J- -Box.
10. Reattach furnace J- -Box to furnace casing with screws
removed in Step 4.
11. Secure field ground wire to J- -Box green ground screw.
12. Complete electrical box wiring and installation. Connect
line voltage leads as shown in Fig. 26. Use best practices
(NEC in U.S. and CSA C22.1 in Canada) for wire
bushings, strain relief, etc.
13. Reinstall cover to J- -Box. Do not pinch wires between
cover and bracket.
POWER CORD INSTALLATION IN FURNACE J- -BOX
NOTE:
Power cords must be able to handle the electrical
requirements listed in Table 5. Refer to power cord
manufacturer's listings.
1. Remove cover from J- -Box.
2. Route listed power cord through 7/8- -in. diameter hole in
J- -Box.
TABLE 7—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
127
104
127
104
127
104
UNIT
UNIT
AMPACITY#
AMPS
5.4
7.54
7.0
9.50
5.0
7.06
6.8
9.22
9.5
12.60
8.2
10.83
10.0
13.13
13.6
17.61
8.2
10.75
10.1
13.12
14.8
18.99
10.2
13.27
14.4
18.55
15.0
19.33
3. Secure power cord to J- -Box bracket with a strain relief
bushing or a connector approved for the type of cord used.
4. Secure field ground wire to green ground screw on J- -Box
bracket.
5. Connect line voltage leads as shown in Fig. 25.
6. Reinstall cover to J- -Box. Do not pinch wires between
cover and bracket.
BX CABLE INSTALLATION IN FURNACE J- -BOX
1. Remove cover from J- -Box.
2. Route BX cable into 7/8- -inch diameter hole in J- -Box.
3. Secure BX cable to J- -Box bracket with connectors
approved for the type of cable used.
4. Secure field ground wire to green ground screw on J- -Box
bracket.
5. Connect line voltage leads as shown in Fig. 26.
6. Reinstall cover to J- -Box. Do not pinch wires between
cover and bracket.
24
MAXIMUM
MAXIMUM
MINIMUM
WIRE
FUSE OR
LENGTH
CKT BKR
(FT.)‡
AMPS†
49
15
39
15
52
15
40
15
29
15
34
15
28
15
32
20
34
15
28
15
30
20
27
15
30
20
29
20
WIRE
GAUGE
14
14
14
14
14
14
14
12
14
14
12
14
12
12
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