Toastmaster TMDC24 Installation Operation & Maintenance page 10

I
NSTALLATION
Provided orifices are size #45 for natural gas and #55 for propane gas. For special gas mixtures, and for
altitudes above 2,000 feet, consult factory for appropriate orifice sizes.
Step 3: Connect Gas Supply
All units are shipped from the factory equipped for use with natural gas. If the unit is to be used
with propane gas, the orifices must be replaced and the pressure regulator converted (see Step
2 on previous page).
If this equipment is being installed at over 2,000 feet altitude and that information was not specified when
ordered, contact the appropriate authorized Toastmaster Service Representative of the Toastmaster Ser-
vice Department. Failure to install with proper orifice sizing in poor performance and may void the war-
ranty.
The Serial Plate is located on the interior side of the valve panel (see Figure 1 on page 3). It indicates the
type of gas the unit is equipped to burn. All Toastmaster equipment is adjusted at the factory. Check type
of gas on serial plate.
These models are design-certified for operation on natural or propane gases. For natural gas,
the convertible regulator is set to deliver a 4"W.C. pressure to the manifold. For propane gas, it
is set to deliver 10" W.C.
If applicable, the vent line from the gas appliance pressure regulator shall be installed to the outdoors in
accordance with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI
Z223.1, Natural Gas Installation Code, CAN/CGA-B149.1, or the Propane Installation Code, CAN/CGA-
B149.2, as applicable.
This appliance should be connected ONLY to the type of gas for which it is equipped.
An adequate gas supply is imperative. Undersized or low pressure lines will restrict the volume of gas
required for satisfactory performance. Fluctuations of more than 25% on natural gas or 10% on propane
gas will create problems and affect burner operating characteristics. A 1/8" pressure tap is located on the
manifold to measure pressure.
An adequate gas supply line to the unit should be no smaller than the I.D. of the pipe from the unit to which
it is connected.
Purge the supply line to clean out dust, dirt, or other foreign matter before connecting the line to the unit.
Use pipe joint compound that is suitable for use with LP gas on all threaded connections.
ALL PIPE JOINTS AND CONNECTIONS MUST BE TESTED THOROUGHLY FOR GAS LEAKS.
USE ONLY SOAPY WATER FOR TESTING ON ALL GASES. NEVER USE AN OPEN FLAME
TO CHECK FOR GAS LEAKS. ALL CONNECTIONS MUST BE CHECKED FOR LEAKS AF-
TER THE UNIT HAS BEEN PUT INTO OPERATION. TEST PRESSURE SHOULD NOT EX-
CEED 14" W.C.
Step 4: Position Unit for Operation
1. Check that the unit is level. The length of each leg is adjustable by screwing the bottom portion of the
leg in or out. The unit must be level for proper operation!
2. Check for adequate clearances around the unit (see page 5).
3. Check for adequate ventilation (see page 5).
Toastmaster
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CAUTION
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