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NTI FTG 2000 Instruction Manual
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NTI FTG 2000 Instruction Manual

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Firetube Giant FTG 2000-2400
NATURAL GAS TO LP CONVERSION INSTRUCTIONS:
Version Date: 2019-11-28
Kit Number:
85758-1
This conversion shall be performed by a qualified service agency in accordance with
the manufacturer's instructions and all applicable codes and requirements of the
authority having jurisdiction. If the information in these instructions is not followed
exactly, a fire, an explosion or production of carbon monoxide may result causing
property damage, personal injury or loss of life. The qualified service agency is
responsible for the proper application of these instructions. The conversion is not
proper and complete until the operation of the converted appliance is checked as
specified in the manufacturer's instructions supplied with the kit, which necessitates
the use of a calibrated CO
NTI boilers are factory equipped to operate with Natural Gas. BEFORE OPERATING WITH PROPANE the
boiler's gas valve must be adjusted according to these instructions. Use the procedures outlined in these instructions to
fully complete the Natural Gas to LP conversion.
Kit Contents:
Natural Gas to LP Conversion Instructions (p/n 85759)
Natural Gas to LP Conversion Decal (p/n 85758)
These instructions CANNOT be used to convert NTI appliance models not referenced in these
instructions. Contact NTI for the Natural Gas to LP conversion kit and instructions for other
models.
Failure to apply these instructions properly may result in dangerous Carbon Monoxide levels,
fire or explosion leading to property damage, personal injury or death.
Liquefied Petroleum (LP) propane gas is heavier than air; therefore, it is imperative that your boiler is not
installed in a pit or similar location that will permit heavier than air gas to collect. Local Codes may require
appliances fueled with LP gas be provided with an approved means of removing unburned gases from the
room. Check your local codes for this requirement.
/O
and CO combustion analyzer.
2
2
ATTENTION: LIQUEFIED PETROLEUM (LP) PROPANE
NTI # 85759
1

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Summary of Contents for NTI FTG 2000

  • Page 1 CO and CO combustion analyzer. NTI boilers are factory equipped to operate with Natural Gas. BEFORE OPERATING WITH PROPANE the boiler’s gas valve must be adjusted according to these instructions. Use the procedures outlined in these instructions to fully complete the Natural Gas to LP conversion.

  • Page 2: Adjusting The Gas Valve

    1.0 Adjusting the Gas Valve The FTG 2000, FTG 2200 & FTG 2400 are converted from Natural to LP Gas by adjusting the Throttle Screw located on the gas valve; unlike most LP conversions an LP orifice is NOT used.

  • Page 3: Gas Valve And Burner Setup

    2.0 Gas Valve and Burner Setup Failure to perform the Gas Valve and Burner Setup correctly may result in incorrect operation, component failure, property damage, serious injury or death. Operating Sequence Prior to commencing the Gas Valve and Burner Setup, perform the following operating sequence check: 1.
  • Page 4 Offset Screw Adjustment The gas valve Offset Screw (see Figures 1-1 & 2-1) is used to calibrate the CO offset at minimum modulation vs. maximum modulation. Making the offset more positive (+) increases the CO concentration at minimum modulation rate; making the offset more negative (-) decreases the CO concentration at minimum modulation rate.
  • Page 5 Table 2-2 Minimum and Maximum Modulation Rates Input Rate (MBH) Model Min. Modulation Rate (RPM) Max. Modulation Rate (RPM) 2000 FTG 2000 1050 7100 2200 FTG 2200 1050 7200 2350 FTG 2400 1050 8000 Notes: Canada: Altitudes between 2000-4500 ft, de-rate by 10%. Consult local authorities for de-rating for altitudes above 4500ft.
  • Page 6 The Gas Valve Offset Pressure is factory set for Natural Gas; units converted to Propane must have the offset pressure field adjusted. Offset pressure must be checked during each annual service for all applications. Improperly adjusted Gas Valve Offset Pressure will result in incorrect combustion leading to burner damage or excessive Carbon Monoxide concentrations causing property damage, personal injury or death.

This manual is also suitable for:

Ftg 2200Ftg 2400