beautypg.com

Bryant 310JAV User Manual

Page 17

background image

Furnace control must be grounded for proper operation or
control

will

lock

out.

Control

is

grounded

through

green/yellow wire routed to gas valve and manifold bracket
screw.

115-V WIRING

Verify that the voltage, frequency, and phase correspond to that
specified on unit rating plate. Also, check to be sure that service
provided by utility is sufficient to handle load imposed by this
equipment. Refer to rating plate or Table 5 for equipment electrical
specifications. Make all electrical connections in accordance with
National Electrical Code (NEC) ANSI/NFPA 70-2002 and any
local codes or ordinances that might apply. For Canadian instal-
lations, all electrical connections must be made in accordance with
Canadian Electrical Code CSA C22.1 or authorities having juris-
diction.

Do not connect aluminum wire between disconnect switch
and furnace. Use only copper wire.

Use a separate, fused branch electrical circuit with a properly sized
fuse or circuit breaker for this furnace. See Table 5 for wire size
and fuse specifications. A readily accessible means of electrical
disconnect must be located within sight of the furnace.

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.

J-BOX RELOCATION

NOTE:

If factory location of J-Box is acceptable, go to next

section (J-Box Cover Installation).

NOTE:

On 14

wide casing models, the J-Box shall not be

relocated to other side of furnace casing when the vent pipe is
routed within the casing.

1. Remove screws holding auxiliary J-box. (See Fig. 22.)

2. Cut wire tie on loop in wires to J-box.

3. Locate box to desired location.

4. Fasten J-Box to casing with screws.

5. Route J-box wires within furnace away from sharp edges and

hot surfaces.

ELECTRICAL CONNECTION TO J-BOX

If manual disconnect switch is to be mounted on furnace,
select a location where a drill or fastener will not contact
electrical or gas components.

1. Attach electrical box to J-Box bracket.

2. Route wires through hole in electrical box and J-Box bracket.

3. Secure ground wire to green screw on J-Box bracket.

4. Connect line voltage leads as shown in Fig. 24.

FOR POWER CORD INSTALLATION

Power cords must be able to handle the electrical requirements
listed in Table 5. Refer to power cord manufacturer’s listings.

Table 5—Electrical Data

UNIT SIZE

VOLTS-
HERTZ-

PHASE

OPERATING

VOLTAGE RANGE

MAXIMUM

UNIT AMPS

UNIT

AMPACITY#

MAXIMUM

WIRE LENGTH (FT)‡

MAXIMUM

FUSE OR CKT BKR

AMPS†

MINIMUM

WIRE GAGE

Maximum*

Minimum*

045-08/024045

115-60-1

127

104

5.6

7.77

47

15

14

045-12/036045

115-60-1

127

104

7.0

9.47

39

15

14

070-08/024070

115-60-1

127

104

5.0

7.06

52

15

14

070-12/036070

115-60-1

127

104

6.7

9.19

40

15

14

070-16/048070**

115-60-1

127

104

9.8

12.59

28

15

14

090-14/042090

115-60-1

127

104

8.1

10.83

34

15

14

090-16/048090

115-60-1

127

104

9.8

12.95

28

15

14

090-20/060090**

115-60-1

127

104

12.9

17.60

34

20

12

110-12/036110

115-60-1

127

104

8.2

10.75

34

15

14

110-16/048110

115-60-1

127

104

10.1

13.12

28

15

14

110-22/066110

115-60-1

127

104

13.7

17.62

32

20

12

135-16/048135

115-60-1

127

104

10.1

13.12

28

15

14

135-22/066135

115-60-1

127

104

14.4

18.55

30

20

12

155-22/060155

115-60-1

127

104

15.0

19.33

29

20

12

* 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 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
** Preliminary

Fig. 22—Relocating J-Box

A02099

TWO

16

This manual is related to the following products: