Gas Supply Piping; Pipe Sizing - Trane GHND-SVX01A-EN Installation Operation & Maintenance

High efficiency propeller fan gas unit heater

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Table Of Contents

Table of Contents

Flammable Vapors!

When connecting to existing gas lines be sure to valve off the gas supply ahead of connection

point. To avoid explosion or possible fire, always purge all residual gas from piping before cutting

into existing line or removing threaded fittings. Failure to remove all gas vapors could result in

death or serious injury or equipment or property-only-damage.

Pipe Sizing

To provide adequate gas pressure at the gas unit heater, size the gas piping as follows:

2. Refer to Table 1. Match "Pipe Run in Feet" with appropriate "Gas Input - Cu Ft/Hr"

Example: It is determined that a 67 foot (20.4m) run of gas pipe is required to connect a

200 MBTU gas unit heater to a 1,000 Btu/cu. ft (0.29 kW) natural gas supply.

Using Table 1, a 1 inch pipe is needed.

Note: See General Safety Information section for English/SI (metric) unit conversion

Note: If more than one gas unit heater is to be served by the same piping arrangement,

Note: If the gas unit heater is to be fired with LP gas, see Table 3 or consult the local LP

Hazard of Explosion and Fire!

Heater installation for use with propane (LP-gas) must be made by a qualified LP-Gas Dealer or

LP-Gas Installer to ensure all appropriate codes, installation procedures, and precautions have

been followed. Failure to follow these instructions could result in death or serious injury.

Before any connection is made to an existing line supplying other gas appliances,

contact the local gas company to make certain that the existing line is of adequate size

to handle the combined load.