Table of Contents
Advertisement
equipment isolation valve facilitates servicing of the gas control regulator, sediment trap,
strainer, and other components in the gas manifold.
3. The gas company should purge the main gas line to remove scale and dirt before it is
attached to the burner gas manifold.
4. Connect the main gas line (see Figure 2). A flexible pipe nipple should be used to
connect the gas line to the burner gas manifold (see Table 5 for sizes).
MegaStar™ Model No.
FPN Part No.
Size
Table 5. MegaStar™ Burner Recommended Flexible Pipe Nipples
5. The piping from the gas regulator outlet to the burner gas manifold should be sized to
minimize pressure losses. See Figure 3 for pipe pressure losses.
6. The OMG gas orifice meter is an integral part of the gas manifold located on the burner
(refer to Figure 2). Refer to individual burner gas orifice meters graph for gas flows through
the gas orifice meter (see Figure 4). Orifice meter sizes and part numbers are shown below
in Table 6.
Failure to use the gas orifice meter assembly to measure gas
flow will make initial setup and tuning difficult.
MegaStar™ Model No.
OMG Part No.
Pipe Size
Orifice Size
Table 6. MegaStar™ Burner Natural Gas Orifice Meter Assemblies
IMPORTANT
Install a flexible fitting between the gas
manifold and the burner gas connection to
reduce vibration stress on the manifold.
25 - 50
HK800598
3" (DN 80)
IMPORTANT
25
HK19814
3" (DN80)
2.40" (60.9mm) 3.25" (82.5mm)
75-100
HK800599
4" (DN 100)
50
75-100
HK19816
HK48242x001
4" (DN 100)
6" (DN 150)
4.8" (122 mm)
Page 11
MS-9
125-150
HK800600X014
6" (DN 150)
125-150
HK47181x005
8" (DN 200)
6.0" (152 mm)
Advertisement
Table of Contents
