Roberts Gorden CGTH-30 Before Using The Heater, System Requirements, Gas Service Requirements

CGTH USE AND CARE MANUAL

SECTION 4: BEFORE USING THE HEATER

The following information is included in the Installa- tion Manual and applies to the installer at the time of installation. The warnings are included on the prod- uct. Because your safety is important to us, we include these warnings for your information. If you find your heater is not installed according to these warnings and codes, immediately contact the installer.

4.1 System Requirements

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.

4.2 Gas Service Requirements:

Inlet Connection:	3/8" Male NPT
Inlet Pressure
Natural Gas:	Minimum 5.0" wc
	Maximum 14.0" wc

LP Gas (Propane): Minmum 11.0" wc

	Maximum 14.0" wc
Manifold Pressure
Natural Gas:	3.5" wc

LP Gas (Propane): 10.5" wc

4.2.1 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 54). Canada: Refer to CSA B149.1 Natural Gas ans Propane Installa- tion Code.

4.2.2 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 54). Canada: Refer to CSA B149.1 Natural Gas ans Propane Installa- tion Code.

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.

4.2.3 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" wc When gas piping is not included in the layout drawing, the local gas supplier will usually help in planning the gas piping.

4.3 Electrical Service Requirements

WARNING

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.

The CGTH-Series heater requires a grounded three- prong electrical outlet to be installed within 18" of the rear surface of the heater’s burner box. It is recom- mended that the outlet for the heater be ceiling- mounted and should be on a dedicated circuit. DO NOT use an electrical extension cord to operate the heater.

Heater Rating: 120 VAC, 60 Hz, 1 Ø, 1 A

4.3.1 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.

4.3.2 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.

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