Carrier 58CMA Electrical Data, OIL Burner, OIL Connections, Barometric Draft Control

Table 7—Electrical Data

UNIT	VOLTS—	OPERATING		MAX	MIN	MAX WIRE	MAX FUSE OR
	HERTZ—	VOLTAGE RANGE		UNIT	WIRE
SIZE						LENGTH (FT)	CKT BKR AMPS
	PHASE—	Max.*	Min.*	AMPS	GAGE
105-12	115— 60— 1	132	104	12.2	14	26	15
120-20	115— 60— 1	132	104	15.7	12	26	20

* Permissible limits of voltage range at which unit will operate satisfactorily.

†Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.

‡ Time-delay fuse is recommended.

2.Inspection to ascertain that vent system is clear and free of obstructions. Any blockage must be cleared before installing furnace.

3.Cleaning chimney or vent if previously used for venting a solid fuel burning appliance or fireplace.

4.Confirming that all unused chimney or vent connections are properly sealed.

5.Verification that chimney is properly lined and sized per the applicable codes. (Refer to list of codes in Safety Consider- ations section.)

Masonry Chimneys

This furnace can be vented into an existing masonry chimney. This furnace must not be vented into a chimney servicing a solid fuel burning appliance. Before venting furnace into a chimney, the chimney MUST be checked for deterioration and repaired if necessary. The chimney must be properly lined and sized per local or national codes.

If furnace is vented into a common chimney, the chimney must be of sufficient area to accommodate the total flue products of all appliances vented into chimney.

The following requirements are provided for a safe venting system:

1.Be sure that chimney flue is clear of any dirt or debris.

2.Be sure that chimney is not servicing an open fireplace.

3.Never reduce pipe size below the outlet size of furnace. (See Fig. 2.)

4.All pipe should be supported using proper clamps and/or straps. These supports should be at least every 4 ft.

5.All horizontal runs of pipe should have at least 1/4-in. per ft of upward slope.

6.All runs of pipe should be as short as possible with as few turns as possible.

7.Seams should be tightly joined and checked for leaks.

8.The flue pipe must not extend into chimney but be flush with inside wall.

9.The chimney must extend 3 ft above highest point where it passes through the roof of a building and at least 2 ft higher than any portion of a building within a horizontal distance of 10 ft. It shall also be extended at least 5 ft above highest connected equipment flue collar.

10.Check local codes for any variance.

Factory-Built Chimneys

Listed factory-built chimneys may be used. Refer to chimney manufacturer’s instructions for proper installation.

OIL BURNER

This furnace is supplied with a high-pressure atomizing retention head-type burner (for use with grade 1 or 2 fuel oil). The mounting flange is fixed to burner air tube and no adjustment is required for insertion length.

OIL CONNECTIONS

Complete instructions for installing fuel oil piping can be found in oil burner Installation Instructions included with furnace.

Oil line entry holes are provided in side panels. Two holes are provided in each location so that a 2-pipe system may be used if desired.

An oil filter should be used with all oil burners and should be installed as close to burner as possible.

BAROMETRIC DRAFT CONTROL

The barometric draft control shipped with furnace MUST be used with furnace to ensure proper operation. Instructions for installing control are packed with control.

ELECTRICAL CONNECTIONS

The unit cabinet must have an uninterrupted or unbroken electrical ground to minimize personal injury if an electrical fault should occur. A green ground screw is provided in control box for this connection.

115-v Wiring

Before proceeding with electrical connections, make certain that 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 7 for equipment electrical specifications.

Make all electrical connections in accordance with National Electrical Code (NEC) ANSI/NFPA 70-2001 and any local codes or ordinances that might apply. For Canadian installations, all electrical connections must be made in accordance with Canadian Electrical Code CSA C22.1 or subauthorities having jurisdiction.

Do not connect aluminum wire between disconnect switch and furnace. Use only copper wire. Failure to follow this caution will lead to intermittent electrical operation and/or fire hazard.

The control system depends on correct polarity of power supply. Connect HOT wire (H) and NEUTRAL wire (N) as shown in Fig. 3 or 4.

A separate line voltage supply MUST be used with a fused disconnect switch or circuit breaker between main power panel and unit. (See Fig. 3 or 4.)

Metallic conduit (where required/used) may terminate at side panel of unit. It is not necessary to extend conduit inside unit from side panel to control box.

When replacing any original furnace wiring, use only 105°C No. 14 AWG copper wire.

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