Installation
GUNE-SVX001A-EN
15
Important:
Use pipe joint sealant resistant to the action
of liquefied petroleum gases regardless of
gas connected.
The appliance and its individual shutoff valve must be
disconnected from the gas supply piping system during
any pressure testing of that system in excess of 1/2 psig
(3.5 kPa).
The appliance must be isolated from the gas supply piping
system by closing its individual manual shutoff valve
during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2 psig
(3.5 kPa).
WARNING
Hazard of Explosion!
Failure to follow proper safe leak test procedures could
result in death or serious injury or equipment or
property-only-damage. NEVER use an open flame to
detect gas leaks. You MUST use a leak test solution for
leak testing.
NOTICE:
Valve Damage!
Do not over tighten the inlet gas piping into the valve.
This may cause stresses that will crack the valve!
Figure 8.
Pipe installation, standard controls
Table 5.
Gas supply pressure
(a)
(a) Applicable for units installed at or below 2,000 feet (610 m) altitude.
Natural Gas Propane Gas
Heating Value
1,050 BTU/Ft
3
(39.1 MJ/m
3
)
2,500 BTU/Ft
3
(93.1 MJ/m
3
)
Manifold Pressure
Single Stage Application
(inch wc)
3.5
10.0
(kPa)
(0.87)
(2.49)
Two Stage Application -
High Fire
(inch wc)
3.5
10.0
(kPa)
(0.87)
(2.49)
Two Stage Application -
Low Fire
(inch wc)
1.1
3.8
(kPa)
(0.27)
(0.95)
Modulating Application -
High Fire
(inch wc)
3.5
10.0
(kPa)
(0.87)
(2.49)
Modulating Application -
Low Fire
(inch wc)
0.9
3.5
(kPa)
(0.22)
(0.87)
Minimum Supply Pressure
Single Stage Application
(inch wc)
5.0
11.0
(kPa)
(1.24)
(2.74)
Two Stage Application
(inch wc)
6.5
11.5
(kPa)
(1.62)
(2.86)
Modulating Application
(inch wc)
6.5
11.5
(kPa)
(1.62)
(2.86)
Maximum Pressure
(inch wc)
14.0
14.0
(kPa)
(3.49)
(3.49)
Note:
Refer to
“Tubular Duct Furnace—High Altitude Deration,” p. 29
for
altitudes greater than 2,000 feet (610 m).
