5
S CANADA: Part 7 of NSCNGPIC, Venting Sy stems
and Air Supply for Appliances
Step 4 —Duct Systems
S
US and CANADA: Air Conditioning Contractors As-
sociation (ACCA) Manual D, Sheet Metal and Air
Conditioning Contractors National Association
(SMACNA), or American Society of Heating, Refriger-
ation, 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
S
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
S
US: NFGC; chapters 5, 6, 7, and 12 and National
Plumbing Codes
S CANADA: NSCNGPIC Parts 3, 4, 5, and 8, and Ap-
pendices A, B, E, and H.
Step 7 —Electrical Connections
S
US: National Electrical Code (NEC) ANSI/NFP A
70--2006
S CANADA: Canadian Electrical Code CSA C22 .1
Step 8 —Ventin g
S
US: NFGC; chapters 10 and 13
S CANADA: NSCNGPIC Part 12 and App endix C
ELECTROSTATIC DISCHARGE (ESD)
PRECAUTIONS PROCEDURE
FURNACE RELIABILITY HAZARD
Failure to follow this caution may result in furnace
component damage.
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.
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 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.
THE BLOWER IS LOCATED
TO THE RIGHT OF THE
BURNER SECTION, AND
AIR CONDITIONED AIR IS
DISCHARGED TO THE LEFT.
THE BLOWER IS
LOCATED BELOW THE
BURNER SECTION, AND
CONDITIONED AIR IS
DISCHARGED UPWARD.
THE BLOWER IS
LOCATED ABOVE THE
BURNER SECTION, AND
CONDITIONED AIR IS
DISCHARGED DOWNWARD
THE BLOWER IS
LOCATED TO THE LEFT
OF THE BURNER SECTION,
AND CONDITIONED AIR IS
DISCHARGED TO THE RIGHT.
A02097
Fig. 4 --- Multipoise Orientations
PG8J/M
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