Gas Piping - Roberts Gorden Vantage HE-40 Installation, Operation & Service Manual

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pg 30 H E
VA N TA G E
Section 9. Gas Piping
Figure 28
Read applicable warnings in Section 1 before proceeding
with Gas Piping installation.
Meter and service must be large enough to handle all the
burners being installed plus any other connected load. The
gas line which feeds the system must be large enough to
supply the required gas with a maximum pressure drop of
1/2" (1.3 cm) w.c. When gas piping is not included in the
layout drawing the local gas supplier will usually help in
planning the gas piping.
Shut-Off Valve
(included w/ connector)
12"
Vinyl Coated Flex Gas Connector
Figure 28. Gas Line Connection with Stainless Steel Flex Gas Connector
I N S TA L L AT I O N M A N U A L
Shut-Off Valve must be parallel to burner gas inlet. The 2"
(5 cm) displacement shown is for the cold condition. This
displacement may reduce when the system is fired.
2"
A 1/2" (1.3 cm) gas supply connection at each burner
location must be located and oriented as shown in Figure
27. To check system pressure, put a plugged 1/8" (3 mm)
NPT tapping in the gas line at the connection to the
burner furthest from the supply. Before connecting the
burners to the supply system, verify that all high pressure
testing of the gas piping has been completed.
Follow these instructions to ensure a professional gas
supply system installation:
• Support all gas piping with suitable pipe hanging
materials.
• Use wrought iron or wrought steel pipe and malleable
iron fittings. All pipe and fittings should be new and free
from defects. Carefully ream the pipe and tubing ends
to remove obstructions and burrs.
• Use LP-gas-resistant joint compound on all threads.
• Check the pipe and tubing ends for leaks before placing
heating equipment into service. When checking for gas
leaks, use a soap and water solution; never use an
open flame.
Install the flex gas connector as shown. The flex gas
connector accommodates expansion of the heating
system and allows for easy installation and service of the
burner.
45°
90°
-
R O B E R T S G O R D O N
0°
45°