american flame AF-LMF

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American Flame: AF-LMF Series Valve Kits

Rev. 4-26-21 Page 1

A F

A M E R I C A N F L A M E

Safety Valve System for Vented Gas Logs

Models:

AF-LMF, AFLMF-R,

AF-LMF-RV, AF-LMF-RVS

IF YOU CANNOT READ OR UNDERSTAND THESE INSTALLATION INSTRUCTIONS DO

NOT ATTEMPT TO INSTALL OR OPERATE

INSTALLATION AND OPERATION INSTRUCTIONS

INTRODUCTION

These instructions apply to LMF-Series valve kits: These Natural gas safety pilot kits are designed to be used with 18 to

30-inch gas logs sets purchased separately as a complete valve kit. These control systems were developed to provide safe,

reliable, user-friendly remote control system for gas heating appliances. Optional LP conversion kits LPK-18, LPK-24 with

pilot orifices are available.

Warning: Improper installation,adjustment, alteration,

service or maintenance can cause injury or property

damage. Refer to this manual. For assistance or

additional information consult a qualified installer,

service agency or gas supplier.

FOR YOUR SAFETY

WHAT TO DO IF YOU SMELL GAS

• Do not try to light the appliance.

• Do not touch any electrical switch.

• Do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s

phone. Follow the gas suppliers instructions.

• If you cannot reach your gas supplier, call the fire

department.

Be sure flue damper and glass doors are fully open

when operating any vented gas log set.

Young children should be carefully supervised when

they are in the same room as the appliance.

Notice: Please leave these instructions for the

consumer. Retain for future reference.

For Your Safety: Do not store or use gasoline or other

flammable vapors and liquids in the vicinity of this or any

other appliance.

NOTICE: Please leave these instructions for the consumer. Retain for future reference.

CALIFORNIA PROPOSITION 65

WARNING

This product is designed to operate with one of the

following fuel sources: Liquid Propane or Natural Gas.

The fuel used to operate this product, and the products of

combustion of such fuel, can expose you to chemicals

including Benzene which is known to the State of California

to cause cancer, birth defects and other reproductive harm

and Carbon Monoxide which is known to the State of

California to cause birth defects or other reproductive harm.

(For more information go to: www.p65Warnings.ca.gov.)

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Summary

Installation and Operation Instructions

Introduction to Valve Kits

Overview of LMF-Series valve kits for gas heating appliances and their safe operation.

California Proposition 65 Warning

Warning about chemicals in fuel and combustion products known to cause harm in California.

Installation: Valve Kit with Pre-Existing Log Set

Preparation and Pilot Assembly

Steps for shutting off gas, removing existing components, mounting pilot assembly, and connecting pilot tubing.

Valve and Gas Line Connections

Locating the valve kit, connecting inlet/outlet gas lines, checking for leaks, and installing damper stop.

Installation: Valve Kit with New Log Set

Log Set Integration and Pilot Setup

Integrating with a new log set, positioning the burner pan, and mounting the pilot assembly.

Valve Installation and Gas Supply

Connecting the valve kit, gas supply lines, checking for leaks, and installing the damper stop.

Connecting the Remote Control

Remote Receiver and Transmitter Pairing

Installing batteries in the receiver, connecting wires, and pairing the transmitter using the LEARN button.

Lighting Procedure

Turning On the Valve Kit

Step-by-step guide to lighting the pilot and turning on the main burner using the control knob or remote.

Turning Off the Valve Kit

Instructions for turning off the main burner while keeping the pilot on, or shutting down the entire system.

Maintenance and Troubleshooting

Annual Maintenance Recommendations

Guidelines for annual system checks by a qualified serviceman to ensure proper operation.

Troubleshooting Pilot Ignition Issues

Steps to resolve problems with the pilot flame not staying lit or not lighting at all.

Troubleshooting Remote Operation

Steps to resolve issues where the remote control fails to light the main burner.

The provided manual describes the American Flame AF-LMF Series Valve Kits, a safety valve system designed for vented gas logs. These kits are intended for use with 18 to 30-inch gas log sets and provide a safe, reliable, and user-friendly remote control system for gas heating appliances. Optional LP conversion kits (LPK-18, LPK-24) with pilot orifices are available.

Function Description:

The AF-LMF series valve kits regulate gas flow to a gas log set, ensuring safe operation. They feature a standing pilot that must be lit manually. Once the pilot is lit, the main burner can be ignited either manually or via a remote control, depending on the specific model. The system includes safety features such as a thermocouple to ensure the pilot flame is present before allowing main burner operation, and a damper stop to prevent the flue from fully closing, ensuring proper ventilation.

Important Technical Specifications:

Models: AF-LMF, AF-LMF-R, AF-LMF-RV, AF-LMF-RVS.
Fuel Sources: Designed to operate with Liquid Propane or Natural Gas.
Gas Supply: Requires a gas supply line less than 1/2 psi with an individual manual shut-off.
Electrical Power (for remote models): Receivers require four AA 1.5V alkaline batteries. Transmitters require a 12V battery.
Gas Connections: Inlet/outlet gas connections are 3/8" flared fittings, with a UR3-68 adapter provided to convert to 1/2" flared fitting if needed.
Pilot Assembly: Mounts to the burner pan, holding the pilot at a 45-degree position.
Clearances: Minimum 2-inch clearance from the burner grate to the valve kit box. The valve kit must be located to the side and front of the burner grate, never directly behind it.
Damper Stop: Included to prevent the flue damper from fully closing, allowing pilot exhaust to vent outdoors.

Usage Features:

Manual ON/OFF (AF-LMF): A basic model with a manual gas control knob for pilot and main burner operation.
Manual ON/OFF with Solenoid and ON/OFF Remote Control (AF-LMF-R): Allows manual pilot lighting and ON/OFF control of the main burner via a remote transmitter.
Manual ON/OFF with Motor Drive and ON/OFF (Hi/Lo) Remote Control (AF-LMF-RV): Features manual pilot lighting and remote control with Hi/Lo flame adjustment.
Manual ON/OFF with Step Motor and ON/OFF (Hi/Med/Lo) Remote Control (AF-LMF-RVS): Offers manual pilot lighting and remote control with Hi/Med/Lo flame adjustment.
Remote Receiver: Placed next to the valve kit, away from direct heat. Features a 3-position slide switch (ON, REMOTE, OFF) to control system operation. The "REMOTE" position enables transmitter control, "ON" keeps the system on continuously, and "OFF" completely shuts down the system and disables remote control.
Learning Transmitter to Receiver: A "LEARN" button on the receiver allows it to accept the unique security code of a transmitter, enabling remote control functionality.
Pilot Lighting Procedure: Involves pushing and holding the gas control knob in the PILOT position for approximately 60 seconds until a strong pilot flame is present, then releasing and verifying the pilot remains lit.
Main Burner Ignition: After the pilot is lit, the main burner can be ignited by turning the gas control knob to the ON position (for manual models) or pressing the ON button on the remote transmitter (for remote models).
Safety Precautions: Emphasizes the importance of professional installation, proper ventilation (flue open, solid doors open), and never operating the system with glass fireplace enclosures closed. It also warns against overheating the valve kit and using incorrect orifices.

Maintenance Features:

Annual Check-up: The system should be checked once a year by a qualified serviceman for proper operation of the valve, pilot, switch, damper, burner, and gas connections.
Troubleshooting Pilot Issues:
- Pilot will not stay lit: Check thermocouple heat-up time (30-60 seconds), snugness of the thermocouple connection to the gas valve, cleanliness of the thermocouple (wipe off soot/dust), and consider replacing the thermocouple or entire pilot assembly if necessary.
- Pilot flame size: The pilot flame can be adjusted using the pilot adjustment screw located behind the front cover of the valve box. Clockwise decreases flame, counter-clockwise increases flame.
Troubleshooting Remote Issues:
- Remote will not light burner: Verify pilot is lit, control knob is in the ON position, transmitter is "LEARNED" to the receiver, receiver slide switch is in the "REMOTE" position, and check battery voltage in both the receiver (total > 5.3V) and transmitter (12V > 9V, correctly installed).
Warranty: American Flame provides a 12-month warranty from the date of purchase or installation against defects in materials and workmanship. Damage due to accident, misuse, abuse, or installation error is not covered.