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CGTH INSTALLATION, OPERATION AND SERVICE MANUAL
10
SECTION 3: PLANNING
3.1 General
This section provides the following information:
• Defines the gas, electric and venting requirements
for the CGTH-Series heater.
• Specifies the national standards and applicable
codes that apply to the gas, electric and venting
requirements.
• Specifies the national standards and applicable
codes that apply to non-residential installations.
3.2 Gas Service Requirements:
3.2.1 Gas Type
The type of gas appearing on the nameplate must be
the type of gas used. Installation must comply with local
codes and recommendations of the local gas company.
United States: Refer to National Fuel Gas Code, ANSI
Z223.1 - latest revision (same as NFPA Bulletin 54).
Canada: Refer to CSA B149.1 and B149.2: Installation
Codes for Gas Burning Appliances.
3.2.2 Gas Supply Lines
The size of the gas supply lines must comply with local
codes and recommendations of the local gas company.
United States: Refer to National Fuel Gas Code, ANSI
Z223.1 - latest revision (same as NFPA Bulletin 54).
Canada: Refer to CSA B149.1 and B149.2: Installation
Codes for Gas Burning Appliances.
A 1/8" NPT plugged tap must be installed in the gas line
connection immediately upstream of the burner that is
farthest from the gas supply meter. The tap is required
for checking system gas pressure.
3.2.3 Meter and Service
Meter and service must be large enough to handle all
the heaters being installed plus any other connected
load. The gas line which feeds the system must be large
enough to supply the required gas with a maximum
pressure drop of 1/2" (13 mm) w.c. When gas piping is
not included in the layout drawing, the local gas supplier
will usually help in planning the gas piping.
3.3 Electrical Service Requirements
3.3.1 Grounding
The heater must be electrically grounded in accordance
with the following codes: United States: Refer to National
Electrical Code, ANSI/NFPA-70 - latest revision. Wiring
must conform to the most current National Electrical
Code and local ordinances. Canada: Refer to Canadian
Electrical Code, CSA C22.1 Part 1 - latest revision.
3.3.2 Thermostat
It is important to note that the CGTH-Series heater is
controlled by a low voltage (24V AC) thermostat sup-
plied with the heater. The control transformer located
inside the burner supplies the necessary electrical
power to operate the thermostat. No other electrical
power to the thermostat is required.
Electrical Shock Hazard
Plug heater into grounded
three-prong ceiling receptacle.
Do not cut or remove the grounding
prong from this plug.
Do not use with an extension cord.
Failure to follow these instructions
can result in death or electrical
shock.
WARNING