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Fig. 3 - - Return Air Temperature
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
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 Contractors National
Association (SMACNA), or American Society 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
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
NFPA 54 / ANSI Z223.1- -2009; chapters 5, 6, 7, and 8 and
National Plumbing Codes
80
/ 27 C
60
/ 16 C
A06745
Protection
Association
Inc.,
Step 7 — Electrical Connections
National Electrical Code (NEC) ANSI/NFPA 70- -2008
Step 8 — Venting
NFGC; NFPA 54 / ANSI Z223.1- -2009 chapters 12 and 13
ELECTROSTATIC DISCHARGE (ESD)
PRECAUTIONS PROCEDURE
CAUTION
!
FURNACE RELIABILITY HAZARD
Improper installation or service of furnace may cause
premature 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
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.
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
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 un-
grounded 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, dis-
charge your body's electrostatic charge to ground to pro-
tect the control from damage. If the control is to be in-
stalled 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 before
touching ungrounded objects.
7. An ESD service kit (available from commercial sources)
may also be used to prevent ESD damage.
5
YOUR
BODY'S
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