Heat Input/Gas Consumption/Orifice (Injector) Data

Gas Specifications for Non-CE and Non-AGA Approved Dryers**

Gas

Nominal

Supply

Gross

Orifice Size

Orifice

Burner

Heating Value

Pressure

Heat Input

 

 

(Injector)

Pressure

Type

 

 

 

 

 

 

Quantity

 

Btu/ft3

in WC

Btu/hr

kW

DMS

mm

in WC

 

Natural

1,000

7.0-13.0

130,000

38.103

23

3.9116

2

4.0

*Liquid Propane

2,500

11.0

130,000

38.103

42

2.3749

2

10.0

 

 

 

 

 

 

 

 

 

Shaded areas are stated in metric equivalents

*Gas valve’s internal regulator disabled.

**Consult factory for elevations over 2,000 feet (610 meters) for correct orifice size.

Piping/Connections

Inlet Connection – 1/2” M.N.P.T.

CE and Australian 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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American Dryer Corp.

113615 -2

Page 14
Image 14
ADC HBG76 manual Heat Input/Gas Consumption/Orifice Injector Data, Piping/Connections

HBG76 specifications

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