Carrier 58CTA/CTX instruction manual Accessories, Venting

ACCESSORIES

1.Electronic Air Cleaner (EAC)

Connect an accessory Electronic Air Cleaner (if used) us- ing 1/4-in female quick connect terminals to the two male 1/4-in quick-connect terminals on the control board marked EAC-1 and EAC-2. The terminals are rated for 115VAC, 1.0 amps maximum and are energized during blower motor operation. (See Fig. 33.)

2.Humidifier (HUM)

Connect an accessory 24 VAC, 0.5 amp. maximum hu- midifier (if used) to the 1/4-in male quick-connect HUM terminal and COM-24V screw terminal on the control board thermostat strip. The HUM terminal is energized when gas valve relay (GVR) is energized. (See Fig. 33.)

NOTE: A field-supplied, 115-v controlled relay connected to EAC terminals may be added if humidifier operation is desired during blower operation.

NOTE: DO NOT connect furnace control HUM terminal to HUM (humidifier) terminal on Thermidistat, Zone Controller or similar device. See Thermidistatt, Zone Controller, thermostat, or controller manufacturer’s instructions for proper connection.

VENTING

The furnace shall be connected to a listed factory built chimney or vent or a clay-tile lined masonry or concrete chimney. Venting into an unlined masonry chimney or concrete chimney is prohibited. When an existing Category I furnace is removed or replaced, the original venting system may no longer be sized to properly vent the attached appliances. An improperly sized Category I venting system could cause the formation of condensate in the furnace and vent, leakage of condensate and combustion products, and spillage of combustion products into the living space.

SETUP SWITCHES	TWINNING AND/OR
LOW-HEAT ONLY AND	COMPONENT TEST
BLOWER OFF-DELAY	TERMINAL

ACRDJ - AIR CONDITIONING

RELAY DISABLE JUMPER

58CT

24-V-THERMOSTAT

TERMINALS

HUMIDIFIER TERMINAL (24-VAC 0.5 AMP MAX.)

3-AMP FUSE

LED OPERATION & DIAGNOSTIC LIGHT

115-VAC (L2) NEUTRAL

CONNECTIONS

HI HEAT

LO HEAT

W2	OFF	OFF	12 ON
	LHT
Y1	DLY		3
DHUM
G

24V				TEST/TWIN		ACRDJ
COMWW1				HUM	PLT
Y/Y2				0.5-AMP024 VAC
R
	FUSE 3-AMP
	T
S AT SEC-1 SEC-2
E		U
			S
L
	D		C			PL1
E
	O
EAC-2 NEUTRAL-L2
BLW						1
BHI/LOR						BHT/CLR
HI HEAT
LO				COOL		1-AMP@115 VAC
HEAT	SPARE-1			SPARE-2		EAC-1

	D
					PL3
				1
BLWR
	IDR		HSIR			IDM	IHI/LOR
	L1	1
		PL2
PR-1
			HSI		HI LO

TRANSFORMER 24-VAC

CONNECTIONS

PL1 - LOW VOLTAGE MAIN HARNESS CONNECTOR

PL3

	SPARE-1	115-VAC (L1) LINE	PL2 - HOT SURFACE
	SPARE-2 COOL
BLOWER SPEED		VOLTAGE CONNECTION	IGNITER & INDUCER
SELECTION TERMINALS			MOTOR CONNECTOR

EAC-1 TERMINAL

(115-VAC 1.0 AMP MAX.)

A02017

Fig. 33 - Furnace Control-PSC Blower Motor

25