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FTV110/110C
NATURAL TO LP CONVERSION INSTRUCTIONS:
Version Date: 2019-06-20
Kit Numbers:
85995-1
This conversion kit shall be installed 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 installation of this kit. The installation 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
/O
and CO combustion analyzer.
2
2
NTI boilers are factory set to operate with Natural Gas. BEFORE OPERATING WITH PROPANE the specified
LP-Venturi Insert must be installed. Use the procedures outlined in these instructions to fully complete the Natural
Gas to LP conversion for models FTV110 & FTV110C.
Kit Contents:
Natural to LP Conversion Instructions (p/n 85996)
Natural to LP Conversion Decal (p/n 85995)
LP-Venturi Insert 27453 39741 (p/n 85989)
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.
FTV110/110C NG-LP Conversion Instructions
ATTENTION: LIQUEFIED PETROLEUM (LP) PROPANE
NTI # 85996
1
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Summary of Contents for NTI FTV110C
- Page 1 CO and CO combustion analyzer. NTI boilers are factory set to operate with Natural Gas. BEFORE OPERATING WITH PROPANE the specified LP-Venturi Insert must be installed. Use the procedures outlined in these instructions to fully complete the Natural Gas to LP conversion for models FTV110 & FTV110C.
- Page 2 1.0 Installing the LP-Venturi Insert 1. Turn the 120VAC power supply off to the boiler. 2. Remove the front cover from the unit. 3. Remove the air-inlet pipe assembly from inside the boiler (note location of feedback hose between air-inlet pipe and gas valve).
- Page 3 4. Ensure the combustion fan post-purges for at least 5 seconds prior to reactivating the igniter. 5. Set the thermostat to the lowest setting and continue with the Gas Valve and Burner Setup procedure outlined below. Combustion Calibration Procedure To calibrate burner combustion, perform the following procedure using a calibrated combustion analyzer capable of measuring CO and CO from a Natural Gas or Propane burning appliance: Set analyzer to the appropriate fuel (Propane).
- Page 4 FTV110 1860 8040 1620 7620 FTV110C 1860 8040 Notes: Canada: Altitudes between 2000-4500 ft, de-rate by 10%. Consult local authorities for de-rating for altitudes above 4500ft. Use Installer Menu setting 2-15 to force the burner to operate at the max. (2-15 = 3) and min. (2-15 = 1) modulation rates;...
- Page 5 Figure 2-1 Gas Valve and Venturi Assembly Line Pressure Test Port Throttle Screw – used to calibrate combustion at max. modulation rate Gas Valve Offset Screw – used to set combustion at min. modulation rate (use 2 mm hex wrench) Venturi FTV110/110C NG-LP Conversion Instructions...
- Page 6 3.0 Labeling As the certified installer of the Natural Gas to LP Conversion Kit, you must indicate on the boiler that it has been converted for use with Propane (LP) Gas: 1. Update Rating Plate Decal – Locate the rating plate decal on the side of the appliance, using a regular ink pen, check the box next to “Field converted to Propane Gas”...
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