Intertek ACVC96 Service Instructions Manual page 31

INSTALLATION CONSIDERATIONS
Use a separate fused branch electrical circuit containing prop-
erly sized wire, and fuse or circuit breaker. The fuse or cir-
cuit breaker must be sized in accordance with the maxi-
mum overcurrent protection specified on the unit rating plate.
An electrical disconnect must be provided at the furnace
location.
NOTE: Line polarity must be observed when making field
connections.
I
N 90% FURNACE UPRIGHT UPFLOW INSTALLATIONS, THE DRAIN TRAP MUST
BE MOUNTED ON THE OPPOSITE SIDE OF THE UNIT FROM THE JUNCTION
T
BOX. HIS WILL REDUCE THE RISK OF WATER REACHING THE JUNCTION
BOX IN THE EVENT OF A BLOCKED DRAIN CONDITION.
Connect hot, neutral, and ground wires as shown in the wir-
ing diagram located on the unit's blower door. Line polarity
must be observed when making field connections. Line volt-
age connections can be made through either the right or left
side panel.
NOTE: Wire routing must not interfere with circulator blower
operation, filter removal, or routine maintenance.
T
O AVOID THE RISK OF ELECTRICAL SHOCK, INJURY, OR DEATH, THE
FURNACE MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH LOCAL
CODES OR, IN THEIR ABSENCE, WITH THE LATEST EDITION OF THE
N E C
ATIONAL LECTRIC ODE.
115 VOLT LINE CONNECTION OF ACCESSORIES
(HUMIDIFIER AND ELECTRONIC AIR CLEANER)
HIGH VOLTAGE
D ALL
ISCONNECT POWER BEFORE SERVICING OR
CHANGING ANY ELECTRICAL WIRING.
F
SOURCES MAY BE PRESENT. AILURE TO DO SO MAY CAUSE
PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
All communicating furnaces have an integrated igni-
tion control that is equipped with line voltage acces-
sory terminals for controlling power to an optional field-
supplied humidifier and/or electronic air cleaner.
WARNING
WARNING
M
ULTIPLE POWER
Accessory Load Specifications
Humidifier
Electronic Air Cleaner
Turn OFF power to the furnace before installing any acces-
sories. Follow the humidifier or air cleaner manufacturers'
instructions for locating, mounting, grounding, and control-
ling these accessories.
HUMIDIFIER CONNECTION OPTIONS
24 volt thermostat
Option 1: Use the single HUM terminal to supply 115 VAC
to a humidifier transformer. This terminal is pow-
ered anytime there is a call for heat.
Option 2: Use the brown wire coming off the common side
of the pressure switch to supply 24 VAC to hu-
midifier
Option 3: The HUM IN / HUM OUT terminals are dry con-
tacts that will close during a call for heat. To
power a humidifier with these contacts The HUM
IN contact can be fed with 24vac from the R ter-
minal or line voltage from the L1 terminal.
Communicating Thermostat
CTK01: The CTK01 is not capable of supplying a call for
humidity; therefore if a humidifier is used it must be con-
trolled by a separate humidistat. The recommended wiring
is one of the methods shown with a 24 volt thermostat.
CTK02 is capable of generating a call for humidity. See dia-
gram for wiring. The user is now provided with 3 modes of
operations which can be selected within the thermostat user
menu.
1. ON: Humidifier is turned on with a heat demand.
2. OFF: Humidifier remains off (relay never closes).
3. IND: Humidifier will cycle with humidification demand, in-
dependent of heat demand. This mode allows the user
to select one of 4 fan speeds (25, 50, 75, and 100%).
CTK03AA, does notprovide a call for humidity when used
with the 2 stage communicating furnaces. The single HUM
terminal on the PCBKF103 or PCBKF104 control board will
provide a line voltage output when the inducer is running.
CTK03AB and CTK04, can provide a humidity call to the
PCBKF103 or PCBKF104 control board relay and operate
the HUM IN - HUM OUT dry contacts.
HUMIDIFIER WIRING
Accessory wiring connections are to be made through the
1/4" quick connect terminals provided on the furnace inte-
grated control module. The Humidifier and Electronic Air
Cleaner hot and neutral terminals are identified as HUM and
EAC. All field wiring must conform to applicable codes. Con-
nections should be made as shown in OPTIONAL ACCES-
SORIES, Accessories Wiring figure.
1.0 Amp maximum at 120 VAC
1.0 Amp maximum at 120 VAC
31