Instruction manual

ManualsBrandsAmana ManualsFurnaceGCI

1. Measure resistance between the neutral (white) connection

and one of the burners.

2. Resistance should measure 10 ohms or less.

This furnace is equipped with a blower door interlock switch which

interrupts unit voltage when the blower door is opened for servic-

ing. Do not defeat this switch.

24 VOLT THERMOSTAT WIRING

NOTE: Wire routing must not interfere with circulator blower

operation, filter removal, or routine maintenance.

Low voltage connections can be made through either the right or

left side panel. Thermostat wiring entrance holes are located in the

blower compartment. The following figure shows connections for a

“heat only” system and “heat/cool system”.

Furnace Control

Remote

Condensing

Unit

Heating

Room

Thermostat

Heating/Cooling

Room

Thermostat

Figure 11 - Typical Field Wiring

(24 VAC Control Circuit)

This furnace is equipped with a 40 VA transformer to facilitate use

with most cooling equipment. Consult the wiring diagram, located

on the blower compartment door, for further details of 115 Volt and

24 Volt wiring.

115 VOLT LINE CONNECTION OF ACCESSORIES (HUMIDIFIER

AND

ELECTRONIC AIR CLEANER)

WARNING

O AVOID PERSONAL INJURY, ELECTRICAL SHOCK OR DEATH, DISCONNECT

ELECTRICAL POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL

WIRING.

The furnace integrated control module is equipped with line voltage

accessory terminals for controlling power to an optional field-sup-

plied humidifier and/or electronic air cleaner.

The accessory load specifications are as follows:

Humidifier 1.0 Amp maximum at 120 VAC

Electronic Air Cleaner 1.0 Amp maximum at 120 VAC

Turn OFF power to the furnace before installing any accessories.

Follow the humidifier or air cleaner manufacturers’ instructions for

locating, mounting, grounding, and controlling these accessories.

Accessory wiring connections are to be made through the 1/4" quick

connect terminals provided on the furnace integrated control mod-

ule. The humidifier and electronic air cleaner hot and neutral termi-

nals are identified as HUM and EAC. All field wiring must conform

to applicable codes. Connections should be made as shown in the

following illustration.

ELECTRONIC

AIR CLEANER

HUMIDIFIER

OPTIONAL

ACCESSORIES

12 PIN

CONNECTOR

120 VAC

NEUTRAL

TERMINALS

HUM-N

EAC-N

HUM-H

EAC-H

120 VAC

HOT AND

PARK

TERMINALS

INTEGRATED

CONTROL

MODULE

Figure 12 - Accessories Wiring

If it is necessary for the installer to supply additional line voltage

wiring to the inside of the furnace, the wiring must conform to all

local codes, and have a minimum temperature rating of 105°C. All

line voltage wire splices must be made inside the furnace junction

box.

The integrated control module humidifier terminals (HUM) are en-

ergized with 115 volts whenever the induced draft blower is ener-

gized. The integrated control module electronic air cleaner termi-

nals (EAC) are energized with 115 volts whenever the circulator

blower is energized.

IX. GAIX. GA

IX. GA

S SUPPLS SUPPL

S SUPPL

Y AND PIPINY AND PIPIN

Y AND PIPIN

GENERAL

The furnace rating plate includes the approved furnace gas input

rating and gas types. The furnace must be equipped to operate on

the type of gas applied. This includes any conversion kits required

for alternate fuels and/or high altitude.

CAUTION

O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE, THE INLET

GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE

WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES OPERATING.

Inlet gas supply pressures must be maintained within the ranges

specified in the following table. The supply pressure must be con-

stant and available with all other household gas fired appliances

operating. The minimum gas supply pressure must be maintained

to prevent unreliable ignition. The maximum must not be exceeded

to prevent unit overfiring.

Natural Gas

Minimum: 5.0" w.c. Maximum:10.0" w.c.

Propane Gas

Minimum: 11.0" w.c. Maximum:13.0" w.c.

Inlet Gas Supply Pressure

NOTE: Adjusting the minimum supply pressure below the limits in

the above table could lead to unreliable ignition.

Gas input to the burners must not exceed the rated input shown on

the rating plate. Overfiring of the furnace can result in premature

heat exchanger failure. Gas pressures in excess of 13 inches wa-

ter column can also cause permanent damage to the gas valve.

IMPORTANT NOTE: The furnace will naturally derate itself with

altitude. Do not attempt to increase the firing rate by changing ori-

fices or increasing the manifold pressure. This can cause poor com-

bustion and equipment failure.

At all altitudes, the manifold pressure must be within 0.3 inches

WC of that listed on the “Product Data bulletin” for the fuel used. At

all altitudes and with either fuel, the air temperature rise must be

within the range listed on the furnace nameplate.