Amana AMH8 Operations Instructions download pdf (Page 34)

PRODUCT DESIGN

115 VOLT LINE CONNECTION OF ACCESSORIES

(HUMIDIFIER AND ELECTRONIC AIR CLEANER)

WARNING

HIGH VOLTAGE

ISCONNECT ALL POWER BEFORE SERVICING OR

CHANGING ANY ELECTRICAL WIRING.

MULTIPLE POWER

SOURCES MAY BE PRESENT.

FAILURE TO DO SO MAY CAUSE

PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

Some furnaces have an integrated ignition control that

is equipped with line voltage accessory terminals for

controlling power to an optional field-supplied humidi-

fier and/or electronic air cleaner.

Electronic Air Cleaner 1.0 Amp maximum at 120 VAC

Accessory Load Specifications

Turn OFF power to the furnace before installing any ac-

cessories. Follow the humidifier or air cleaner manufac-

turers’ instructions for locating, mounting, grounding, and

controlling these accessories.

24 VOLT HUMIDIFIER

The yellow wire connected to the I.D. Blower pressure

switch is powered anytime the pressure switch is closed

and provides 24 VAC humidifier control. Remove the yel-

low wire and connect the supplied brown jumper wire to

the pressure switch terminal. Reconnect the yellow wire to

the “piggyback” terminal on the brown jumper and then

connect the 24 VAC line of the humidifier to the stripped

end of the brown wire. Using a wire nut or a field-supplied

quick connect terminal can make this connection. The wir-

ing must conform to all local and national codes. Connect

the COM side of the humidifier to the B/C terminal on the

furnace control board (or to the COM side of the 24 VAC

transformer). DO NOT CONNECT 115V HUMIDIFIER TO

THESE TERMINALS.

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 tempera-

ture 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 energized with 115 volts whenever the induced draft

blower is energized. The integrated control module elec-

tronic air cleaner terminals (EAC) are energized with 115

volts whenever the circulator blower is energized.

24 VOLT THERMOSTAT WIRING

NOTE: Low voltage connections can be made through ei-

ther the right or left side panel. Wire routing must not inter-

fere with circulator blower operation, filter removal, or rou-

tine maintenance.

A 40 V.A. transformer and an integrated electronic control

are built into the furnace to allow use with most cooling

equipment. Consult the wiring diagram, located in the Tech-

nical Manual or on the blower door for further details of 115

Volt and 24 Volt wiring.

THERMOSTAT WIRING - "H" MODEL

The "H" model furnace will have a "W" terminal and will use

a single stage thermostat. The following drawing illustrates

the typical field wiring for a heat only single stage system

and a single stage heating/single stage cooling system. Refer

to the following figures for proper connections to the inte-

grated control module.

Furnace

Control

Furnace

Control

Remote

Condensing

Unit

Heatin

Room

Thermostat

Heating/Cooling

Room Thermostat

Typical Field Wiring (24 VAC Control Circuit)

CONTINUOUS FAN OPERATION

"H" MODEL

The "H" model furnace control will energize the low heat

circulator fan speed when the fan switch on the thermostat

is turned to the "ON" position.

CIRCULATOR BLOWER SPEED ADJUSTMENT

WARNING

HIGH VOLTAGE

ISCONNECT ALL POWER BEFOR CHANGING SPEED TAPS.

ULTIPLE POWER SOURCES MAY BE PRESENT.

AILURE TO DO

SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

Connect the correct motor leads to the COOL, HIGH HEAT,

LOW HEAT, and PARK terminals. If the heating speed

equals cooling speed, use the jumper wire provided. All

unused motor leads that are not connected to "PARK" ter-

minals on the control must be taped to prevent shorts.

CIRCULATING AIR AND FILTERS

DUCTWORK - AIR FLOW

Duct systems and register sizes must be properly designed

for the C.F.M. and external static pressure rating of the

furnace. Ductwork should be designed in accordance with

the recommended methods of "Air Conditioning Contrac-

tors of America" manual D.

A duct system should be installed in accordance with Stan-

dards of the National Board of Fire Underwriters for the

Installation of Air Conditioning, Warm Air Heating and Ven-

tilating Systems, Pamphlets No. 90A and 90B.

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Amana AMH8 Operations Instructions Page 34

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