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Figure 3 - Return Air Temperature
For accessory installation details, refer to the applicable
instruction literature.
NOTE: Remove all shipping brackets and materials before
operating the furnace.
CODES AND STANDARDS
Follow all national and local codes and standards in
addition to these instructions. The installation must comply
with regulations of the serving gas supplier, local building,
heating, plumbing, and other codes. In absence of local
codes, the installation must comply with the national codes
listed below and all authorities having jurisdiction. In the
United States , follow all codes and standards for the
following:
Step 1 —Safety
National Fuel Gas Code (NFGC) NFPA
54−2009/ANSI Z223.1−2009 and the Installation
Standards, Warm Air Heating and Air Conditioning
Systems ANSI/NFPA 90B
Step 2 —General Installation
Current edition of the NFGC and the NFPA 90B. For
copies, contact the National Fire Protection Associ-
ation 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).
Step 3 —Combustion and Ventilation Air
Section 9.3 of the NFGC, NFPA 54 / ANSI
Z223.1−2009 Air for Combustion and Ventilation
Step 4 —Duct Systems
Air Conditioning Contractors Association (ACCA)
Manual D, Sheet Metal and Air Conditioning Con-
tractors National Association (SMACNA), or Americ-
an Society of Heating, Refrigeration, and Air Condi-
tioning 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
Current edition of SMACNA and NFPA 90B as
tested by UL Standard 181 for Class I Rigid Air
Ducts
441 01 1402 02
Step 6 —Gas Piping and Gas Pipe Pressure
Testing
80_F/27_C
Step 7 —Electrical Connections
Step 8 —Venting
60_F/16_C
A06745
FURNACE RELIABILITY HAZARD
Failure to follow this caution may result in furnace
component damage.
Electrostatic discharge can affect electronic components.
Follow
Procedure listed below 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.
NFGC; NFPA 54 / ANSI Z223.1−2009 chapters 5, 6,
7 and 8 and National Plumbing Codes
National Electrical Code (NEC) ANSI/NFPA
70−2008
NFGC NFPA 54 / ANSI Z223.1−2009; chapters 12
and 13
ELECTROSTATIC DISCHARGE (ESD)
PRECAUTIONS PROCEDURE
CAUTION
!
the
Electrostatic
1. Disconnect all power to the furnace. Multiple discon-
nects 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
furnace chassis which is close to the control. Tools
held in a person's hand during grounding will be satis-
factorily discharged.
3. After touching the chassis, you may proceed to service
the control or connecting wires as long as you do noth-
ing to recharge your body with static electricity (for ex-
ample; 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, un-
painted metal surface of the furnace again before
touching control or wires.
5. Use this procedure for installed and uninstalled (un-
grounded) furnaces.
6. Before removing a new control from its container, dis-
charge 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 fur-
nace. Put all used and new controls into containers be-
fore touching ungrounded objects.
7. An ESD service kit (available from commercial
sources) may also be used to prevent ESD damage.
Discharge
Precautions
5
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