ALLIANCE 120 Series Installation, Operation & Maintenance Manual page 31

1 Pressure Tap (Alternate location)
2 Manometer
3 Burner Tube Attaching Screws
How to Change Burner Orifice Size
1. Disconnect electrical power from tumble dryer.
Close gas shut-off valve to tumble dryer. Refer to
Figure 7.
2. Remove gas valve:
Remove the burner orifice(s) from the spud
holder. When converting from Natural Gas to
L.P. Gas, the left-most burner and orifice (viewed
from front) must be removed. In place of the
removed orifice, a blank orifice (Part No.
M400995) and a Burner Opening Cover (Part
No. M413099) must be installed.
3. Install the new, correct burner orifice(s). Refer to
Figure 9 and Table 2. Torque each to 9 - 10 Nm.
4. Reinstall spud holder assembly to gas valve,
making certain burner orifice(s) are in line with
burner tube opening. Refer to Figure 9.
5. Commission tumble dryer for use.
NOTE: Blank burner orifices are Part No.
M400995.
70458101 (EN)
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1
3
4
4 Pressure Tap
5 Gas Valve Flange
6 Gas Valve
Figure 8
How to Adjust Gas Valve Governor/Regulator
1. Check gas burner orifice (manifold) pressure as
follows. Refer to Figure 8.
2. Remove screw plug from pressure tap.
3. Connect a "U"-tube manometer (or similar
pressure gauge) to the burner orifice (manifold)
pressure tap.
4. Start tumble dryer and note pressure once flame
is burning. Remove regulator cap and adjust
regulator screw until the burner orifice pressure
per applicable table is achieved. Replace
regulator cap. Refer to Figure 8.
5. Commission tumble dryer for use.
1
1 Size Stamped on Orifice
Installation
SPECIFIED
PRESSURE
2
TMB1376N
BURNER
ORIFICE
Figure 9
TMB1376N
TMB2015N
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