Carrier bryant 830CA User Manual Download

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830CA: Installation, Start–Up, Operating and Service and Maintenance Instructions

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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 6

for equipment electrical specifications.

Make all electrical connections in accordance with current edition of

National Electrical Code (NEC) NFPA 70 and any local codes or

ordinances that might apply.

Use a separate, fused branch electrical circuit with a properly sized fuse

or circuit breaker for this furnace. See

Table 6

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 rapidly flash RED

and furnace will NOT operate.

J-BOX RELOCATION

NOTE:

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

(ELECTRICAL CONNECTION TO J-BOX).

1. Remove and save two screws holding J-Box.

NOTE:

The J-Box cover need not be removed from the J-Box in order

to move the J-Box. Do NOT remove green ground screw inside J-Box.

2. Cut wire tie on loop in furnace wires attached to J-box.
3. Move J-Box to desired location.
4. Fasten J-Box to casing with two screws removed in Step 1.
5. Route J-Box wires within furnace away from sharp edges, rotating

parts and hot surfaces.

Electrical Connection to J-Box

Electrical Box on Furnace Casing Side

1. Select and remove a hole knockout in the casing where the

electrical box is to be installed.

NOTE:

Check that duct on side of furnace will not interfere with

installed electrical box.

2. Remove the desired electrical box hole knockout and position the

hole in the electrical box over the hole in the furnace casing.

3. Fasten the electrical box to casing by driving two field supplied

screws from inside electrical box into casing steel.

4. Remove and save two screws holding J-Box.
5. Pull furnace power wires out of 1/2-in. (12 mm) diameter hole in

J-Box. Do not loosen wires from strain-relief wire-tie on outside of

J-Box.

6. Route furnace power wires through holes in casing and electrical

box and into electrical box, see

Fig. 24

7. Pull field power wires into electrical box.
8. Remove cover from furnace J-Box.
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, see

Fig. 23

. Use best practices (NEC in U.S. 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 6

. Refer to power cord manufacturer’s listings.

1. Remove cover from J-Box.
2. Route listed power cord through 7/8-in. (22 mm) diameter hole in

J-Box.

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.

CAUTION

FURNACE MAY NOT OPERATE

Failure to follow this caution may result in intermittent furnace

operation.
Furnace control must be grounded for proper operation or else control

will lock out. Control must remain grounded through green/yellow wire

routed to gas valve and gas valve mounting bracket screw.

WARNING

FIRE HAZARD

Failure to follow this warning could result in personal injury, death, or

property damage.

Do not connect aluminum wire between disconnect switch and furnace.

Use only copper wire.

WARNING

FIRE OR ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury, death, or

property damage.

If field-supplied manual disconnect switch is to be mounted on furnace

casing side, select a location where a drill or fastener cannot damage

electrical or gas components.

Table 6 – Electrical Data

Unit Size

Volts-

Hertz- Phase

Operating Voltage

Range

*. Permissible limits of the voltage range at which the unit operates satisfactorily.

Maximum

Unit Amps

Unit

Ampacity

†

†. 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.

Minimum

Wire Size

AWG

Maximum

Wire Length

‡

‡. Length shown is as measured one way along wire path between unit and service panel for maximum 2 percent voltage drop.

Maximum

Fuse or CKT

BKR

Amps