Step 2—General Installation
•
US: Current edition of the NFGC and the NFPA 90B. For
copies, contact the National Fire Protection Association Inc.,
Batterymarch Park, Quincy, MA 02269; (www.NFPA.org) or
for only the NFGC, contact the American Gas Association, 400
N. Capitol Street, N.W., Washington, DC 20001
(www.AGA.org).
•
CANADA: NSCNGPIC. For a copy, contact Standard Sales,
CSA International, 178 Rexdale Boulevard, Etobicoke (Tor-
onto), Ontario, M9W 1R3 Canada
Step 3—Combustion and Ventilation Air
•
US: Section 8.3 of the NFGC, Air for Combustion and
Ventilation
•
CANADA: Part 7 of NSCNGPIC, Venting Systems and Air
Supply for Appliances
Step 4—Duct Systems
•
US and CANADA: Air Conditioning Contractors Association
(ACCA) Manual D, Sheet Metal and Air Conditioning Con-
tractors National Association (SMACNA), or American Soci-
ety of Heating, Refrigeration, and Air Conditioning Engineers
(ASHRAE) 2001 Fundamentals Handbook Chapter 34 or 2000
HVAC Systems and Equipment Handbook Chapters 9 and 16.
Step 5—Acoustical Lining and Fibrous Glass Duct
•
US and CANADA: current edition of SMACNA and NFPA
90B as tested by UL Standard 181 for Class I Rigid Air Ducts
Step 6—Gas Piping and Gas Pipe Pressure Testing
•
US: NFGC; chapters 5, 6, 7, and 12 and National Plumbing
Codes
•
CANADA: NSCNGPIC Parts 3, 4, and 5, and Appendices A,
B, E, and H.
Step 7—Electrical Connections
•
US: National Electrical Code (NEC) ANSI/NFPA 70–2002
•
CANADA: Canadian Electrical Code CSA C22.1
Step 8—Venting
•
US: NFGC; chapters 10 and 13
•
CANADA: NSCNGPIC Part 7 and Appendix C
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE
FURNACE RELIABILITY HAZARD
Improper installation or service of furnace may cause prema-
ture furnace component failure.
Electrostatic discharge can affect electronic components.
Follow the Electrostatic Discharge Precautions Procedure
listed below during furnace installation and servicing to
protect the furnace electronic control. Precautions will pre-
vent 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.
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 DIS-
CHARGING YOUR BODY’S ELECTROSTATIC CHARGE
TO GROUND.
2. Firmly touch the clean, unpainted, metal surface of the furnace
chassis which is close to the control. Tools held in a person’s
hand during grounding will be satisfactorily discharged.
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 (ungrounded)
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 control
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.
LOCATION
GENERAL
This multipoise furnace is shipped in packaged configuration.
Some assembly and modifications are required when used in any
of the four applications shown in Fig. 4.
This furnace must:
•
be installed so the electrical components are protected from
water.
•
not be installed directly on any combustible material other than
wood flooring (refer to SAFETY CONSIDERATIONS).
•
be located as close to the chimney or vent and attached to an air
distribution system. Refer to Air Ducts section.
•
be provided ample space for servicing and cleaning. Always
comply with minimum fire protection clearances shown on the
furnace clearance to combustible label.
Fig. 3—Return Air Temperature
A02055
60
5
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