Dettson C105-2-V, Installation Instructions And Homeowner'S Manual

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2 INTRODUCTION
This multiposition Category IV condensing furnace is CSA
design certified direct vent (2 pipes) or non-direct vent (1 pipe).
The furnace is factory shipped for use with natural gas. The
furnace can be converted in the field for use with propane gas
when a factory supplied conversion kit is used. Refer to the
furnace rating plate for conversion kit information and table 26
This furnace is designed for minimum continuous return air
temperature of 60 °F (16 °C) or intermittent operation down
to 55 °F (13 °C) such as when used with a night setback
thermostat. Return air temperature must not exceed 80 °F (27
°C). Failure to follow these return air temperature limits may
affect reliability of heat exchangers, motors, and controls.
The furnace should be sized to provide at least 100 % of
the design heating load requirement. Heating load estimates
can be made using approved methods available from Air
Conditioning Contractors of America (Manual J); American
Society of Heating,
Refrigerating, and Air Conditioning
Engineers; or other approved engineering methods. Excessive
over sizing of the furnace could cause the furnace and/or vent
to fail prematurely.
2.1 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 and
Canada, follow all codes and standards for the following:
Table 1 – Codes and Standards
TOPIC USA CANADA
Safety National Fuel Gas Code
(NFGC)
NFPA 54-
2009/ANSI Z223.1 and
the Installation Standards,
Warm
Air Heating and
Air Conditioning Systems
ANSI/NFPA 90B
National Standard of
Canada, Natural Gas and
Propane Installation Code
(NSCNGPIC)
CAN/CSA
B149.1
General
installation
NFGC and the NFPA 90B.
For
copies, contact the
National Fire Protection
Association Inc., Battery
march Park, Quincy, MA
02269; or for only the NFGC
contact the American Gas
Association, 400 N. Capitol,
N.W.,Washington DC 20001
NSCNGPIC. For a copy,
contact
Standard Sales,
CSA International, 178
Rexdale Boulevard,
Etobicoke (Toronto),
Ontario, M9W 1R3, Canada
Combustion and
and air ventilation
Section 9.3 of the
NFPA54/ANSI Z223.1
Air for Combustion and
Ventilation
Part 8 of the CAN/CSA
B149.1,
Venting Systems
and Air Supply for
Appliances
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).
Acoustical lining
and fibrous glass
duct
current edition of SMACNA, NFPA 90B as tested by UL Standard
181 for Class I Rigid Air Ducts.
Gas piping and
pipe pressure
testing
NFPA 54/ANSI Z223.1
NFGC; Chapters 5, 6, 7,
and 8 and national plumbing
codes.
CAN/CSA-B149.1, Part 6
Manufactured
Mobile housing Manufactured Home
Construction and Safety
Standard, Title 24 CFR,
Part 3280 or The Standard
for
Manufactured Home
Installations ANSI/NCS
A225.1
Canadian Standard for
Series M92 Mobile Homes,
CAN/CSA Z240MH
Electrical
connections National Electrical Code
(NEC) ANSI/NFPA 70
Canadian Electrical Code
CSA C22.1
Venting Part 7, Venting of
equipment, latest edition of
the National Fuel Gas Code
NPFA 54, 90A and 90B
ANSI Z223.1-
CAN/CSA-B149.1-05 latest
edition
IN THE STATE OF MASSACHUSETTS:
• This product must be installed by a licensed
plumber of gas fitter;
• When flexible connectors are used, the
maximum length shall not exceed 36 in.
(914 mm);
• When lever type gas shutoffs are used they
shall be ”T” handle type;
• The use of copper tubing for gas piping is
not approved by the state of Massachusetts;
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