IBC VFC 15-150 Operating Instructions Manual

1

VFC 15-150 / VFC 45-225

NATURAL GAS coNveRSioN PARTS KiT# P-176

120-170 R2

 DANGER

Check the rating plate of the boiler 

to ensure it is configured for the 

fuel you are using.

Failure to perform the proper fuel 

conversion when required can 

result in an immediate hazard.

Operating any IBC boiler using a 

fuel other than the fuel listed on 

its rating plate is prohibited. If 

these instructions are not followed 

exactly, a dangerous situation can 

result, leading to fire, explosion or 

production of carbon monoxide, 

which may cause property damage, 

personal injury, or loss of life.

 NOTE

These instructions are to be closely followed, and referenced to the details in 

the boiler’s current certified Installation and Operating Instruction Manual.

The above listed modulating boilers are factory fire-tested to operate with natural 

gas, or propane as ordered. The rating plate will be marked to indicate which fuel 

the particular boiler has been set up with. Firing a boiler with a fuel other than what 

is listed on the rating plate is prohibited unless the following conversion procedure 

is completed by a qualified technician.

The boiler will automatically de-rate the maximum input at a rate of approximately 

2% per 1,000’ above 4,500’.  The gas valves zero governor will ensure that the 

gas:air mixture is not affected at altitude.

Important Note: If converting from Propane to Natural Gas - Order Propane 

to Natural Gas Conversion Kit, IBC Part# P-174 from your authorized IBC 

Distributor.

MODEl NuMbER

NATuRAl GAs  

TO PROPANE

PROPANE TO 

NATuRAl GAs

VFC 15-150

P-174

P-176

VFC 45-225

P-174

P-176

Table 1: Fuel Conversion Kits

InCluded wITh ConVersIon KIT 

(IBC ParT# P-176)

•

  1 x rating Plate Fuel overlay - IBC Part# 80-114a

•

  1 x Gas Valve Conversion label - IBC Part# 80-107B

•

  1 x Installer Identifier label - IBC Part# 80-172a

•

  1 x Instruction sheet - IBC Part# 120-170 r2

WARNING

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.