ADC HB50 Installation & Operator's Manual page 15

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.
113014 - 14
Test all connections for leaks by brushing on a soapy
water solution (liquid detergent works well).
Warning
!
Never test for leaks with a flame!!!
Converting from One Family
of Gas to Another _____________________
Warning (CE Dryers)
!
This appliance must only be operated with the
gas type indicated on the dryer's data plate. If
the appliance is converted (gas type changed), a data
plate amendment must be obtained from American
Dryer Corporation (dryer's serial number is required to
purchase a conversion kit).
IMPORTANT: Any burner changes or conversions must
be made by a qualified professional.
The dryers manufactured for Belgium, Luxemburg,
Greece, Estonia, Slovak Republic, Iceland, Malta, Poland
and Cyprus cannot be converted from one family of gas to
another.
Conversion from Natural Gas
to Propane or Butane Gas
The following conversion allows the dryer to be operated
with either propane, butane, or LPG. The use of gas valve
kit (ADC P/N 140414) disables the internal regulator of the
gas valve. Therefore, the gas supply is ungoverned and an
external regulator must be provided at the source of the
supply (example L.P. tank) or the gas supply line to the dryer.
The type of L.P. kit supplied will depend on the country the
dryer is installed in.
Parts Required for Conversion:
Description
Unregulated Gas Conversion Kit**
Regulated L.P. Gas Conversion Kit***
Burner Orifice (Injector)
L.P. Conversion Label
* Refer to page 14 for orifice (injector) size.
** Required for unregulated propane or butane only.
*** Required for regulated LPG or propane only.
Instructions
Disconnect electrical power to the dryer.
Close all shutoff valves in dryer's gas supply line.
IMPORTANT: It is required that the following procedures
be performed on both burner assemblies.
Open the panel located just below the loading door.
Locate the gas train and disconnect the union, three electrical
plugs, and the gas train mounting screws from the burner.
Carefully slide the gas train out of the gas train enclosure.
(The carbon ignitor located at the far end of the gas train is
very fragile.)
Remove two burner tube mounting screws and remove
burner tube in order to gain access to the orifice.
www.adclaundry.com
ADC P/N
140414
OR
140416
114515
Qty
2
2
* 2
1
15