Fossil Fuel Applications; Line Voltage Accessories; Gas Supply And Piping; Volt Humidifier - Intertek MVM97 Series Installation Instructions Manual

F F A
OSSIL UEL PPLICATIONS
This furnace can be used in conjunction with a heat pump in a
fossil fuel application. A fossil fuel application refers to a com-
bined gas furnace and heat pump installation which uses an out-
door temperature sensor to determine the most cost efficient means
of heating (heat pump or gas furnace).
A heat pump thermostat with three stages of heat is required to
properly use a two-stage furnace in conjunction with a heat pump. Refer to the fossil fuel kit (AFE18-60A) installation instructions
for additional thermostat requirements.
Strictly follow the wiring guidelines in the fossil fuel kit installation instructions. All furnace connections must be made to the furnace
control board and the "FURNACE" terminal strip on the fossil fuel
control board.
L V A
INE OLTAGE CCESSORIES
H )
UMIDIFIER
The furnace control board is equipped with line voltage accessory
terminals for controlling power to an electronic air cleaner.
The accessory load specifications are as follows. (The furnace
control board also has a set of dry contacts for humidifier con-
nection.)
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
module. The Electronic air cleaner hot terminal is identified as EAC. It is necessary to remove the protective tab on the board
cover to access the EAC Terminal. The EAC neutral terminal is identified as NEU-
TRAL. A line voltage humidifier may be connected between one of the HUM con-
tacts and NEUTRAL. The other HUM contact must be fed from the L1 terminal.
All field wiring must conform to applicable codes. Connections should be made as shown
in Figure 34.
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 furnace control board HUM (dry contacts) are closed whenever the inducer is
energized in a non-communicating installation. When used with a CTK02**, CTK03
or CTK04 communicating thermostat, the HUM terminals are closed whenever there
is a call for humidity. The integrated control module electronic air cleaner terminals
(EAC) are energized with 115 volts whenever the circulator blower is energized.
24 V H
OLT UMIDIFIER
A 24 volt humidifier can be powered by feeding one of the HUM
terminals with a field installed wire from the R terminal.
G S P
AS UPPL Y AND IPING
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.
(E A C
LECTRONIC IR LEANER AND
HIGH VOLTAGE !
T
O AVOID PERSONAL INJURY OR DEATH DUE TO
,
ELECTRICAL SHOCK DISCONNECT ELECTRICAL POWER
BEFORE SERVICING OR CHANGING ANY ELECTRICAL
.
WIRING
HIGH VOLTAGE !
T
O AVOID PERSONAL INJURY OR DEATH DUE TO
,
ELECTRICAL SHOCK DISCONNECT ELECTRICAL POWER
BEFORE SERVICING OR CHANGING ANY ELECTRICAL
.
WIRING
Humidifier
Electronic Air Cleaner
NEUTRAL
T
O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE
INLET GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT
RATING PLATE WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES
.
OPERATING
WARNING
WARNING
1.0 Amp maximum at 120 VAC
1.0 Amp maximum at 120 VAC
L1
AUX OUT
AUX IN
Accessories Wiring
Figure 34
CAUTION
,
THE
31