IO-213D
2/04
12
Plenum chambers and air ducts must be installed in
accordance with the Standard for the Installation of Air
Conditioning and Ventilating Systems, NFPA #90A, or the
Standard for the Installation of Warm Air Heating and Air
Conditioning Systems, NFPA # 90B.
If installed in parallel with a cooling unit the damper or other
means used to control the flow of air must be adequate to
prevent chilled air from entering the furnace, and if manually
operated must be equipped with means to prevent operation
of the other unit unless the damper is in the full heat or cool
position.
NOTE:
UPON INITIAL START-UP SOME SMOKE OR AN ODOR
MAY BE PRESENT. THIS IS NORMAL AND SHOULD
DISAPPEAR IN A SHORT AMOUNT OF TIME.
IT IS
RECOMMENDED THAT WINDOWS AND DOORS BE OPENED
UPON INITIAL START-UP TO VENT THIS
NON-TOXIC
SMOKE.
One of the most common causes of problems, including
premature heat exchanger failure, in a forced air heating
system is insufficient return air. The return air connections
to the furnace should be approximately equal to the area of
warm air discharge. Consult local codes for specific
requirements.
All return ducts must be adequately secured to the furnace
and sealed airtight. All other ductwork must be secured with
approved connections and sealed airtight.
When the furnace is mounted on a platform it must be sealed
air tight between the furnace and the return ductwork. The
floor or platform must provide sound physical support for
the furnace without cracks, gaps, sagging, etc. around the
base as to provide an airtight seal between the support and
the base.
Install the return air to terminate through the base under the
furnace. For installations where return air ducts cannot be
run under the floor, the return air supply may be taken from
the side(s).
Embosses are provided on the sides of the furnace for use
as a template for the ductwork connection.
Where the maximum required airflow is
1800 c.f.m.
or
greater, the bottom or both sides must be utilized for return
air supply. Never use the rear of the furnace for the return
connection unless it is for conditions where additional return
air ducts are desired.
ELECTRICAL SUPPLY CONNECTIONS
The electrical requirements are 115Volts, 60 Hz., 1 Ph. A
separate supply line with a current overload device and a
manual switch, where required, must be installed. Type “T”
wire or equivalent with a minimum rating of 95
o
F (35
o
C)
temperature rise must be run directly from the main power
supply. Use copper conductors only.
Holes are provided on both sides of the furnace for electrical
connection. The junction box may be moved to either side.
The entry holes for supply and low voltage control wires are
for use with ½” electrical connectors.
All electrical wiring entering the furnace must be secured to
the casing with proper methods of strain relief. Solderless
connectors may be used to connect wires inside the junction
box for supply wires.
It is recommended that a means of shutting off the power
be within sight of the furnace.
INSTALLATION OF THE ELECTRICAL SUPPLY MUST BE IN
ACCORDANCE WITH LOCAL CODES. IN THE ABSENCE
OF LOCAL CODES REFER TO THE NATIONAL
ELECTRICAL CODE ANSI/NFPA NO. 7 (LATEST EDITION),
WHICH CAN BE OBTAINED FROM THE NATIONAL FIRE
PROTECTION ASSOCIATION, BATTERYMARCH PARK,
QUINCY, MA 02269. IN CANADA REFER TO THE LATEST
EDITION OF THE CANADIAN ELECTRICAL CODE C22.1
PART I.
CONTROL VOLTAGE CONNECTIONS
Thermostat Installation
Install the thermostat in accordance with the instructions
accompanying the thermostat. Connect the thermostat
wiring to the thermostat terminal block on the furnace control
board. The thermostat wiring should be a minimum of 18
gauge. Adhere to recommended color code to facilitate
future troubleshooting.
The thermostat should be located near the return air grille
or opening. It should be approximately 5 feet from the floor
level. Never locate the thermostat where it will be influenced
by heat generated by hot water pipes, lamps, televisions,
direct sunlight, supply air registers, etc.
Interconnecting wiring must be secured and protected from
damage or disconnection. The use of solderless connectors
or equivalent is recommended. The low voltage control wiring
exiting the furnace is labeled “thermostat wiring”.
Setting The Heat Anticipator
Following the instructions accompanying the thermostat for
proper adjustment of the anticipator.
FEATURES
The integrated control board in this furnace has terminals
provided for added features. These features are a 115v.
Humidifier, a 24v. Humidifier, an Electronic Air Cleaner, Blower
“OFF” Timing and Twinning with another furnace.
115 Volt Humidifier
The “115v HUM” terminal is located on the high voltage side
of the board. It is covered with a terminal protector. See
wiring below.
24 Volt Humidifier
The “HUM” lug for the operation of a 24-volt humidifier is
located in the vicinity of the thermostat connections. See
wiring.
HUM
IGNITION CONTROL
FIELD SUPPLIED
HUMIDISTAT
HUMIDIFIER
LINE
NEUTRAL
Electronic Air Cleaner
The E.A.C. terminal is located near the blower speed
connections and is covered with a terminal protector. This
option should be wired in conjunction with the electronic air
cleaner. This feature assures the indoor blower fan is
energized when there is a demand for air cleaner.
