Carrier 58MEC instruction manual Cleaning Burners, Electrical Shock Hazard

PLUG
CAP
COLLECTOR BOX
DRAIN TUBE (BLUE
& WHITE STRIPED)
COLLECTOR BOX
TUBE (PINK)
COLLECTOR BOX
TUBE (GREEN)
INDUCER HOUSING
(MOLDED) DRAIN
TUBE (BEHIND
COLLECTOR BOX
DRAIN TUBE)
COLLECTOR BOX
DRAIN TUBE (BLUE)	CONDENSATE
	TRAP
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE
COUPLING (LEFT
DRAIN OPTION)

FIELD-INSTALLED

FACTORY-SUPPLIED

DRAIN TUBE

FIELD-INSTALLED	FIELD-INSTALLED
FACTORY-SUPPLIED	FACTORY-SUPPLIED
1⁄2-IN. CPVC STREET	DRAIN TUBE
ELBOWS (2) FOR	COUPLING (RIGHT
LEFT DRAIN OPTION	DRAIN OPTION)

A01030

Fig. 5 - Factory-Shipped Upflow Tube Configuration

(Shown with Blower Access Panel Removed)

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in noise or furnace component failure.

The blower wheel should not be dropped or bent as balance will be affected.

g.Clean wheel per instructions on degreaser cleaner. Do not get degreaser in motor.

9.Reassemble motor and blower wheel by reversing items 8b through 8f. Ensure wheel is positioned for proper rotation. Tighten setscrew to between 140-160 in.-lb torque.

NOTE: Be sure to attach ground wire to blower housing.

10.Reinstall blower assembly in furnace.

11.Reinstall control box, transformer, and door switch as- sembly on blower shelf.

12.Reinstall condensate trap and tubing if previously removed.

a.Reinstall condensate trap in hole in blower shelf.

b.Connect condensate trap drain tubes. See Fig. 5 or tubing diagram on main furnace door for proper tube location.

(1.) Connect 1 tube (blue or blue and white striped) from collector box.

(2.) Connect 1 tube (violet or unmarked) from inducer housing.

(3.) Connect 1 tube (relief port, green or pink) from collector box.

NOTE: Ensure tubes are not kinked or pinched, as this will affect operation.

c.Connect field drain to condensate trap.

13.Reconnect wires.

Refer to furnace wiring diagram and connect thermostat leads if previously disconnected. (See Fig. 16.)

NOTE: Refer to Table 3 for motor speed lead reconnection if leads were not identified before disconnection.

! CAUTION	58MEC
UNIT DAMAGE HAZARD

Failure follow this caution may result in unit component damage.

Heating air speed selection MUST be adjusted to provide proper temperature rise as specified on the rating plate.

Table 3 – Speed Selection

COLOR	SPEED	FACTORY
		ATTACHED TO
Gray	5	Cool
Yellow	4	Spare
Blue	3	High--- Heat
Orange	2	Spare
Red	1	Low Heat/Cont
		Fan

!WARNING

ELECTRICAL SHOCK HAZARD

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

Blower access door switch opens 115-v power to furnace control. No component operation can occur. Caution must be taken when manually closing this switch for service purposes.

14.Turn on electrical supply. Manually close blower access door switch. Use a piece of tape to hold switch closed. Check for proper rotation and speed changes by performing a component self-test as shown at the bottom of Service la- bel. (See Fig. 21.)

15.If furnace is operating properly, remove tape to release blower access door switch, replace blower access door, and replace main furnace door.

Step 3 — Cleaning Burners

The following items should be performed by a qualified service technician. If the burners develop an accumulation of light dirt or dust, they may be cleaned by using the following procedure:

1.Turn off gas and electrical supplies to furnace.

2.Remove main furnace door.

3.Remove burner box cover.

4.Using backup wrench, disconnect gas supply pipe from fur- nace gas control valve.

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