AMPW 400-1000L I&O Manual
49
Table 27: Specific Gravity Correction Factors
(continued)
Specific
Gravity
Correction
Factor
Specific
Gravity
Correction
Factor
0.60
1.00
0.90
0.82
0.65
0.96
1.0
0.78
0.70
0.93
1.10
0.74
0.75
0.90
1.20
0.71
0.80
0.87
1.30
0.68
0.85
0.81
1.40
0.66
C. Gas Pressure Switches
1. This appliance is equipped with a high and low gas
pressure switch to comply with CSD-1 standards.
a. The gas pressure switches will trip if the incoming
gas pressure passes the switches' set point. A
tripped switch is indicated on the appliance
display. A Manual reset is required to reset the
switch and resume operation.
Figure 22: High/Low Gas Pressure Switch
Table 28: Inlet Gas Pressures and Pipe Size
WARNING
WARNING
Failure to properly pipe gas supply to appliance may
result in improper operation and damage. Always
assure gas piping is absolutely leak free and of the
proper size and type for the connected load.
An additional gas pressure regulator may be need
-
ed. Consult gas supplier.
Failure to use proper thread compounds on all gas
connections may result in leaks of flammable gas.
Gas supply to appliance and system must be com
-
pletely shut off prior to installing or servicing the
gas piping.
Do not use matches, candles, or other open flame
ignition source to check for leaks.
Use two wrenches when tightening gas piping at
the appliance, use one wrench to prevent the gas
train from turning.
Failure to support the connection pipe could dam
-
age safety components.
Ensure that the high gas pressure regulator is at
least 10 feet (3 m) upstream of the appliance.
!
NOTICE
NOTICE
Use lock-up type gas pressure regulator when
low and high gas pressure switches are installed.
Older or non-lock-up type regulators may result in
nuisance lockouts on gas pressure drops or spikes.
The AMP and all other appliances must be firing at
maximum capacity to properly measure the inlet
gas pressure.
AMP
Model
Inlet Size
(In.)
Min. Gas Pres.
(In. W.C.)
Max. Gas Pres.
(In. W.C.)
High Gas
Pressure Switch
1
(In. W.C.)
Low Gas
Pressure Switch
1
(In. W.C.)
Natural
Propane
Natural
Propane
400
3/4
4
8
14
14
1
Natural: 3
LP: 7
500
3/4
650
1
800
1
1000L
1
1
Factory default high and low gas pressure switch setpoint.
Manual Reset
