LP-446-r4 Rev. 10.12.16
39
Figure 32 - 500 Model Gas Valve
D. Boiler Gas Valve
Figure 33 - 700/850 Models Gas Valve
Do not do a gas conversion on this boiler
without an officially approved conversion
kit and instructions supplied by HTP. Failure
to use a conversion kit when converting
the boiler to fire on Natural or Propane gas
will result in extremely dangerous burner
operation, leading to fire, explosion, severe
personal injury, or death.
Strain on the gas valve and fittings may result
in vibration, premature component failure
and gas leakage, and result in fire, explosion,
property damage, severe personal injury, or
death.
Adjustments to the throttle screw or
offset may only be made by a qualified gas
technician using a calibrated combustion
analyzer capable of measuring CO2 and CO.
Failure to follow this instruction could result
in fire, explosion, property damage, severe
personal injury, or death.
Ensure that the high gas pressure regulator is
as least 6 – 10 feet upstream of the appliance.
Failure to do so could result in substantial
property damage, severe personal injury, or
death.
Summary of Contents for MODCON500
Page 35: ...LP 446 r4 Rev 10 12 16 35 Figure 29 Cascade Master and FollowerWiring...
Page 57: ...LP 446 r4 Rev 10 12 16 57 Figure 35 500 Model Combustion System Replacement Parts...
Page 58: ...LP 446 r4 Rev 10 12 16 58 Figure 36 700 850 Models Combustion System Replacement Parts...
Page 60: ...LP 446 r4 Rev 10 12 16 60 Figure 38 Cabinet Replacement Parts All Models...
