Desa GVC65NA, GVC50NA, GVC35NA Installing Heater, Continued, Connecting To Gas Supply

INSTALLING HEATER

Continued

CONNECTING TO GAS SUPPLY

WARNING

A qualified service person must connect heater to gas supply. Follow all local codes.

WARNING

Never connect heater to private (non-utility) gas wells. This gas is commonly known as well-head gas.

IMPORTANT: Check gas line pressure at gas meter before connecting heater to gas line. Gas line pressure must be no greater than 14 inches of water. If gas line pressure is higher, heater regulator damage could occur.

Gas Meter

Figure 6 - Connecting Heater to Utility Gas Line

CAUTION

Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe that is 1/2" in diameter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of pressure will occur.

The gas supply line to your heater must be 1/2 inch in diameter or larger. If the supply line branches to serve two or more heaters, the line from the branch back to the gas meter must be doubled or tripled, etc., in size (depending upon the number of heaters). Example for 1/2 inch diameter supply line: If the supply line branches to serve two heaters, the line diameter from the branch back to the gas meter must be at least 1 inch. If three heaters are served, the line diameter from the branch back to the gas meter must be at least 1 1/2 inches.

Note: If gas supply line total length exceeds forty feet, use a larger diameter pipe. Use pipe that is the next size larger than the heater control valve fitting.

Continued 11

100749