Ignition Conversion Kit Instructions Apples to: Models F and B - Form CP-F/B-IGN (Version B) - Install Conversion Kit

Oct 25, 2026

Ignition conversion kit instructions for converting Model F and Model B unit heaters from standing pilot to spark-ignited intermittent safety pilot systems, with guidance for configurations that may include lockout or a vent damper option. The document warns against improper installation and specifies kit compatibility checks, ignition controller selection, and wiring terminal connections. It provides step-by-step procedures for shutting off gas and power, changing the combination valve, installing the ignition controller, and replacing the pilot with correct spark-gap verification and shield usage.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages8

Reading Time20 min

AccessFree to download

Description / Application

Installation Instructions for Ignition Conversion Kit

Step 1: Shut off gas and electrical supply

Step 2: Change combination valve

Step 3: Install ignition controller

Step 4: Change pilot

Warnings and cautions

Form CP-F/B-IGN (Version B) 􀂯 Obsoletes Form CP-F/B-IGN (Version A) Ignition Conversion Kit Instructions Apples to: Models F and B Ignition Conversion Kits to Convert Models F and B with Standing Pilot to Spark-Ignited, Intermittent Safety Pilot System With or Without Lockout WARNING: Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury, or death. Read the installation instructions thoroughly before installing this equipment. Description/ Application IMPORTANT NOTE: These are not gas conversion kits, ignition conversion only. NOTE: A unit with a vent damper (Option AV7) requires P/N 257010, an ignition controller for intermittent spark pilot with lockout (Option AH3) The ignition conversion kits in this form are for Model F and Model B unit heaters equipped with standing pilot and single stage gas valve. Before beginning conversion, determine that your kit is compatible with your heater. Spark-ignited, intermittent safety pilot systems without lockout are not available with propane gas; propane gas requires 100% lockout. | IGNITION CONVERSION KIT SELECTION CHART for Models F and B | | | | | | | --- | --- | --- | --- | --- | --- | | Kits to convert from standing pilot to sparkignited, intermittent recycling safety pilot (without lockout) | | | Kits to convert from standing pilot to spark-ignited, intermittent safety with 100% lockout | | | | Model | Gas Type | Kit P/N | Model | Gas Type | Kit P/N | | F/B 25-165 | Natural | 100525 | F/B 25-165 | Natural | 100528 | | F/B 200-250 | | 100526 | F/B 200-250 | | 100529 | | F 300-400; B 300 | | 100527 | F 300-400; B 300 | | 100530 | | B 400 | | 102348 | B 400 | | 102349 | | See pages 7-8 for a parts listing of each kit. | | | F/B 25-200 | Propane | 100531 | | | | | F 250-400; B 250-300 | | 100532 | | | | | B 400 | | 102350 | WARNING: This ignition conversion kit is to be installed by a qualified agency in accordance with these instructions and in compliance with all codes and requirements of authorities having jurisdiction. Failure to follow instructions could result in death, serious injury, and or property damage. The qualified agency performing this work assumes responsibility for this installation. Instructions for Installing Ignition Conversion Kit 1. Turn off the gas supply at a shutoff valve upstream of the combination valve and turnoff the electrical supply. 2. Change Combination Valve Disconnect the main gas line, the wires and the pilot tubing from the valve and remove the valve. Install the valve provided with the kit being sure that the gas flow through the valve is in the proper direction and that the valve is in an allowable orientation. Follow the valve manufacturer’s instructions and, if applicable, the replacement valve kit instructions for details on installing the valve. Reconnect the main gas line. Do not reconnect the pilot tubing or wires at this time. WARNING: The operating valve is the primary safety shutoff. The gas supply line must be free of dirt or scale before connecting the unit to ensure positive closure. 3. Install the Ignition Controller (See FIGURE 1 for location.) Attach the ignition controller mounting bracket to the rear of the heater using the holes in the cabinet and the \#10x3/8” screws in the kit. Position the ignition controller on the bracket with the wire terminals across the bottom. Use the \#8x5/8” screws to attach the ignition controller to the bracket. Form CP-F/B-IGN, P/N100550 (Rev 3), Page 1 Instructions (cont’d) FIGURE 1-Ignition Control Location FIGURE 2-Bottom Access Panel Open FIGURE 3-Pilot Spark Gap | Replacement Controller, either P/N 257009 or 257010 | |

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Ignition Controller location

Valve | | --- | --- | --- | | | Transformer
Terminal Str | | 4. Change Pilot |
Remove the heater that r tom panel to The bottom below. ) Remove and remove | two screws locate

FAQs

What is the purpose of the CP-F/B-IGN Version B ignition conversion kit instructions?

The instructions guide conversion of Model F and Model B unit heaters equipped with standing pilot and a single-stage gas valve to spark-ignited intermittent safety pilot systems, with notes on lockout and compatibility.

What compatibility requirements must be checked before beginning the conversion?

Verify that the selected ignition conversion kit is compatible with the heater model and configuration, including whether the system requires lockout and whether a vent damper option is present.

Who is allowed to install the ignition conversion kit?

Installation must be performed by a qualified agency in accordance with the instructions and applicable codes and requirements of authorities having jurisdiction.

Oct 25, 2026

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