American Dryer Corp T75, T30 manual T20 T50, Piping/Connections

Piping/Connections

T20	T 30	T50	T 75
3 /8”	1/2 ”	1 /2 ”	1/2 ”

CE dryer connections will be B.S.P.T., all others will be N.P.T.

There should be a minimum 6-inch (15.24 cm) clearance between the back guard and the first bend in the gas piping for ease of servicing. It is recommended that a gas shutoff valve be provided to the gas supply line of each dryer for ease in servicing.

The size of the main gas supply line (header) will vary depending on the distance this line travels from the gas meter or, in the case of L.P. gas, the supply tank, other gas-operated appliances on the same line, etc. Specific information regarding supply line size should be determined by the gas supplier.

Note

!Undersized gas supply piping can create a low or inconsistent pressure, which will result in erratic

operation of the burner ignition system.

TYPICAL NATURAL GAS INSTALLATION

TYPICAL L.P. GAS INSTALLATION

Consistent gas pressure is essential at all gas connections. It is recommended that a 3/4-inch (19.05 mm) pipe gas loop be installed in the supply line servicing a bank of dryers. An in-line pressure regulator must be installed in the gas supply line (header) if the (natural) gas pressure exceeds 13.0 in WC (32.34 mb) pressure.

A plugged tap, accessible for a pressure gauge connection, must be installed in the main gas supply line immediately upstream of the dryers.

Important

!Pipe joint compounds that resist the action of natural, L.P., and butane gases must be used.

Test all connections for leaks by brushing on a soapy water solution (liquid detergent works well).

Warning

!Never test for leaks with a flame!!!

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