18
5. Turn ON power to furnace.
To enable the dehumidify function on the integrated control mod-
ule, set the dehumidification ENABLE dipswitch from OFF to
ON.
Once the switch is set, the dehumidify function is enabled dur-
ing a
combination
call for cooling (T-Stat) and dehumidification
(DEHUM-Stat).
9
10
DEHUM
Unused
Move to the ON position
to enable dehumidification
ON
OFF
S5
F
OSSIL
F
UEL
A
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
outdoor temperature sensor to determine the most cost effi-
cient 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 installation instructions for
additional thermostat requirements.
Strictly follow the wiring guidelines in the fossil fuel kit installa-
tion instructions. All furnace connections must be made to the
furnace two-stage integrated control module and the “FUR-
NACE” terminal strip on the fossil fuel control board.
115 V
OLT
L
INE
C
ONNECTION
OF
A
CCESSORIES
(H
UMIDIFIER
AND
E
LECTRONIC
A
IR
C
LEANER
)
HIGH
VOLTAGE
!
T
O
AVOID
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRICAL
SHOCK
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
SERVICING
OR
CHANGING
ANY
ELECTRICAL
WIRING
.
WARNING
The furnace integrated control module is equipped with line
voltage accessory terminals for controlling power to an optional
field-supplied 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
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 NEUTRAL. A line voltage humidifier may be
connected between one of the HUM contacts 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 the following figure.
Accessories Wiring
If it is necessary for the installer to supply additional line volt-
age 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 furnace control HUM (dry contacts) are closed
whenever the inducer is energized in a non-communicating in-
stallation. When used with a CTK02** communicating thermo-
stat, the HUM terminals are closed whenever there is a call for
humidity. The integrated control module electronic air cleaner ter-
minals (EAC) are energized with 115 volts whenever the circulator
blower is energized.
Содержание DVC80603B
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