5
Electrical Connections
S
US: Current edition of National Electrical Code (NEC) NFPA
70
S
CANADA: Current edition of Canadian Electrical Code CSA
C22.1
Condensate Drain Connection
S
US: Current edition of National Standard Plumbing Code,
Section 8.7.
S
Canada: Current edition of National Plumbing Code of Canada
in Canada.
ELECTROSTATIC DISCHARGE (ESD)
PRECAUTIONS PROCEDURE
FURNACE RELIABILITY HAZARD
Failure to follow this caution may result in unit component
damage.
Electrostatic discharge can affect electronic components.
Take precautions during furnace installation and servicing
to protect the furnace electronic control. Precautions will
prevent electrostatic discharges from personnel and hand
tools which are held during the procedure. These
precautions will help to avoid exposing the control to
electrostatic discharge by putting the furnace, the control,
and the person at the same electrostatic potential.
CAUTION
!
1. Disconnect all power to the furnace. Multiple disconnects
may be required.
DO NOT TOUCH THE CONTROL
OR ANY WIRE CONNECTED TO THE CONTROL
PRIOR
TO
DISCHARGING
YOUR
BODY’S
ELECTROSTATIC CHARGE TO GROUND.
2. Firmly touch the clean, unpainted, metal surface of the fur-
nace chassis which is close to the control. Tools held in a
person’s hand during grounding will be satisfactorily dis-
charged.
3. After touching the chassis, you may proceed to service the
control or connecting wires as long as you do nothing to
recharge your body with static electricity (for example;
DO
NOT
move or shuffle your feet, do not touch ungrounded
objects, etc.).
4. If you touch ungrounded objects (and recharge your body
with static electricity), firmly touch a clean, unpainted metal
surface of the furnace again before touching control or
wires.
5. Use this procedure for installed and uninstalled (ungroun-
ded) furnaces.
6. Before removing a new control from its container, discharge
your body’s electrostatic charge to ground to protect the
control from damage. If the control is to be installed in a
furnace, follow items 1 through 4 before bringing the con-
trol or yourself in contact with the furnace. Put all used and
new controls into containers before touching ungrounded
objects.
7. An ESD service kit (available from commercial sources)
may also be used to prevent ESD damage.
ACCESSORIES
See Product Data Sheet for a list of accessories for this product.
Table 1 – Loose Parts Bag
DESCRIPTION
QUANTITY
Outlet Restrictor Plate (provided with 40K BTUH furnaces only; see Note)
1
Air Intake Pipe Flange
1
Vent Pipe Flange
1
Pipe Flange Gaskets
2
Sharp Tip Screws (Vent and Inlet Flanges)
10
Vent Pipe Coupling
1
Vent Pipe Coupling Clamps
2
Pressure Switch Tube
1
Rubber Drain Elbow
1
Drain Tube Clamps
4
1/2---in. CPVC to 3/4---in. PVC Pipe Adapter
1
Gas Line Grommet
1
Junction Box Cover
1
Junction Box Base
1
Green Ground Screw
1
Blunt Tip Screws (Junction Box)
3
Thermostat Wire Grommet
1
Drain Extension Tube (Z---pipe) (Provided separately in furnace)
1
NOTE
: The 40K size is the only furnace that receives the outlet restrictor in the loose parts bag. See Maximum Equivalent Vent Length,
Table 17.
Table 2 – Minimum Clearances to Combustible Materials for All Units
POSITION
CLEARANCE
REAR
0
FRONT (Combustion air openings in furnace and in structure)
1 in. (25 mm)
Required for service
*24 in. (610 mm)
All Sides of Supply Plenum
*1 in. (25 mm)
Sides
0
Vent
0
Top of Furnace
1 in. (25 mm)
*Consult local building codes.
912S
