Nortec Industries GS Series manual GAS Piping, Gas

￿DO NOT mount humidifiers in an area where freezing may occur.

￿If humidifiers are mounted on a roof, a properly ventilated, temperature controlled, (above freezing), weatherproof enclosure must be used.

￿DO NOT mount humidifiers on vibrating surface. Consult factory.

￿The humidifier shall not be installed directly on carpeting, tile or other combustible material other than wood flooring.

￿Some insulating materials may be combustible. Prior to installing this appliance examine the area for insulating material. If this appliance is installed in an insulated space, it must be kept free and clear of insulating materials. If insulation is added after the appliance is installed, it will be necessary to examine the area again.

GAS PIPING

Installation of piping must be in accordance with local codes, and ANSI Z233.1, “National Fuel Gas Code,” in the United States or CAN/CGA-B149 Installation Codes in Canada.

The following table indicates the maximum and minimum allowable gas pressures for the Gas Humidifier.

		INCHES W.C.
GAS	MIN.		MAX.
Natural	4.5		9.0
Propane	9.0		13.0

Figure #3

Gas Connection

Inlet coupling supplied

Shut-off Gas Valve (by others)

Union

(by others)

Sediment Trap (by others)

The gas inlet pipe size to the appliance is: ½” NPT for GS 100

¾” NPT for GS 200

1” NPT for GS 300 / 400

1 ¼” NPT for GS 500 / 600

Provide an adequate size gas supply line.

In all installations, a certified manual shut off valve, located outside the cabinet, must be installed. When black iron gas pipe is used, a sediment trap must be located ahead of the humidifier gas controls. See Figure #3.

Leak test all gas connections external to the humidifier, using a commercial soap solution made to detect leaks. Bubbles indicate gas leakage. Seal all leaks before placing the humidifier in operation.

WARNING: Never use an open flame to check for gas leaks. If a leak does exist, a fire or explosion could occur, resulting in damage, injury or death.

The appliance must be isolated from the gas

supply piping system by closing its individual manual shut-off valve during any pressure testing of the gas supply piping system at test pressures equal to or greater than 14” w.c. (3.5 kPa).

Dissipate test pressure from the gas supply line before re-opening the manual shut off valve to the appliance.

NOTES: (See pg 19 for additional Gas Piping information)

￿Failure to follow this procedure may damage the gas valve. Over pressured gas valves are not covered by warranty.

￿DO NOT use Teflon tape on gas line pipe threads. A flexible sealant suitable for use with Natural Gas and Propane Gas is recommended.

￿Plan gas supply piping so it will not interfere with removal of gas valves or blower assemblies and front or side service doors.

￿All gas piping should be adequately supported to prevent any strain on inlet piping.

The gas valve is provided with pressure taps to measure gas pressure upstream and downstream, (manifold pressure). The minimum gas pressure shown is for the purpose of input adjustment.

A 1/8" NPT plugged tapping, accessible for test gage connection, must be installed immediately

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