UNVENTED GAS LOG HEATER OR VENTED DECORATIVE APPLIANCE INSTALLATION AND OPERATING INSTRUCTIONS MODELS: HVFL18 and HVFL24 Natural Gas or Propane/LPG Control Type: Manual and Milli-Volt WARNINGS This appliance may be installed in an aftermarket, permanently located, manufactured (mobile) home, where not prohibited by local codes. If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
CONTENTS Important Safety Information .................................. 3 Getting Started..........................................................5 Product Features and Specifications .................... 6 Natural Gas .........................................................6 Propane/LP ..........................................................6 Ignition Controls ...................................................7 Pilot ......................................................................
IMPORTANT SAFETY INFORMATION INSTALLER Please leave these instructions with the owner. OWNER Please retain these instructions for future reference. IMPORTANT WARNING Read these instructions carefully before installing or trying to operate this vent-free gas heater. • Any change to this heater or its controls can be dangerous. • Improper installation or use of the heater can cause serious injury or death from fire, burns, explosion or carbon monoxide poisoning.
IMPORTANT SAFETY INFORMATION Continued from page 3 17. Unvented gas heaters are a supplemental zone heater. They are not intended to be the primary heating appliance. 18. Unvented gas heaters emit moisture into the living area. In most homes of average construction, this does not pose a problem. In houses of extremely tight construction, additional mechanical ventilation is recommended. 19.
GETTING STARTED MAKE SURE YOU HAVE RECEIVED ALL PARTS: Check your packing list to verify that all listed parts have been received.
PRODUCT FEATURES AND SPECIFICATIONS NATURAL GAS NOTE: An external regulator is required to reduce supply pressure to a maximum of 10 1/2" W.C. on natural gas systems operating at higher pressure. Manual Pressure Regulator Pressure: Setting: 4.0" w.c. Gas Inlet Pressure: Max. 101/2" w.c. Min. 5" w.c. Model Number HVFL18NM HVFL18NV HVFL24NM HVFL24NV Milli-Volt Regulator Pressure Setting: 3.5" w.c. Pilot Regulator: 3.5" w.c. Gas Inlet Pressure: 101/2" w.c. Min. 5" w.c..
PRODUCT FEATURES AND SPECIFICATIONS IGNITION CONTROLS Piezo ignitor allows ignition of the pilot without the use of matches or batteries. Manual control has three (3) positions: OFF - All gas to the gas logs is shut off at the valve. IGN - Valve position to light/maintain a standing pilot. HI/LOW - Variable position corresponding to desired flame height. Milli-Volt control has four (4) positions: OFF - All gas to the gas logs is shut off at the valve. IGN - Valve position to light/maintain a standing pilot.
GENERAL INSTALLATION INFORMATION CODES Adhere to all local codes or, in their absence, the latest edition of THE NATIONAL FUEL GAS CODE ANSI Z223.1 or NFPA54 which can be obtained from… American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 or National Fire Protection Association, Inc.
GENERAL INSTALLATION INFORMATION Counter Fireplace H W Figure 1 - Example of a Large Room with 1/2 Wall Divider The following formula can be used to determine the maximum heater rating per the definition of unconfined space: BTU/Hr = (L1 + L2) Ft x (W) Ft x (H) Ft x 1000 50 Consider two connecting rooms with an open area between, with the following dimensions: L1 = 151/2 Ft., L2 = 12 Ft., W = 12 Ft., H = 8 Ft.
WARNING FIREPLACE AND HEARTH DIMENSIONS This appliance is for installation only in a solid-fuel burning masonry or UL127 factorybuilt fireplace, vent free appliance, or in listed ventless firebox enclosure. It has been design certified for these installations. Exception: DO NOT install this appliance in a factory-built fireplace that includes instructions stating it has not been tested or should not be used with unvented gas logs.
PLACEMENT IN A FIREPLACE WITH A RESTRICTIVE BARRIER IMPORTANT INFORMATION FOR THE INSTALLATION OF THIS GAS LOG SET The following are guidelines for placing a gas log set in a fireplace that has a restrictive barrier along the bottom front opening of the fireplace. Some examples of barriers are glass/screen door frames and sunken/recessed fireplaces.
WARNING CLEARANCES AND HEIGHT REQUIREMENTS The dimensions shown in Figures 4 through 12 and defined in the fireplace manufacturer's instructions are minimum clearances to maintain when installing this heater. Left and right clearances are determined when facing the front of the heater. When heater is installed into a ventless firebox, minimum clearances, as specified by the ventless firebox manufacturer, must be met. Follow these instructions carefully to ensure safe installation.
CLEARANCES and HEIGHT REQUIREMENTS Heat resistant material (minimum requirements) with no wooden mantel or other combustible projection: To install the gas logs into a fireplace with no wooden mantel, shelf or other combustible projection above the fireplace opening, measure the heat resistant material height, per Figure 5, then see TABLE A. Heat resistant materials such as slate and marble must be at least 1/2” thick. Sheet metal should not be installed onto combustible material.
CLEARANCES and HEIGHT REQUIREMENTS Heat resistant material (minimum requirements) with wooden mantel or other combustible projection: To install the heater with a wooden mantel, shelf or other combustible projection above, first measure the heat resistant material shown in Figure 6, then refer to Table B.
CLEARANCES AND HEIGHT REQUIRMENTS 10" 8" 6" 21/2" Heat Resistant Material 8" 14" 201/2" 245/8" 28" Example: Heater in Fireplace or Firebox A mantel may project from the wall a maximum of 21/2" at a minimum of 14" above the opening, and a maximum of 6" at a minimum of 201/2" above the opening.
CLEARANCES AND HEIGHT REQUIRMENTS 10" or less Heat Resistant Material 12" min. 28" Heater in Fireplace or Firebox Example: The bottom of the mantel may project from the wall a maximum of 10" at a minimum of 28" above the Figure 9 - Minimum Mantel Clearance with No Hood — HVFL24 7" 6" 4" Figure 10 is an example of an unsafe mantel installation.
FLOOR CLEARANCE The gas log heater must be installed at least 5" above any combustible flooring material, such as carpeting or tile, which is closer than 14" to the base of the fireplace. The minimum distance must be maintained from the top surface of carpeting, tile, etc. See Figure 11. OR, The gas log heater may be installed nearer to the floor if a minimum of 14" of noncombustible material such as slate or marble is installed between the base of the fireplace and the combustible flooring. See Figure 12.
FIREPLACE PREPARATION BEFORE FULLY INSTALLING THE UNIT: • Turn OFF the gas supply to the fireplace or firebox. WARNING • Seal any fresh air vents and/or ash clean-out doors located on the floor or wall of the fireplace. If left unsealed, drafting may cause pilot outage or sooting. Use a heat resistant sealant. Do not seal the chimney flue damper.
WARNING INSTALLING VENTED APPLICATIONS The fireplace and gas logs function as a system. If the fireplace is spilling into the room (check with a match or a smoke stick), reposition the damper clamp until a positive draft is obtained by opening the damper. If negative pressure in home prevents having a positive draft, contact your dealer for assistance. WARNING PLACING AND SECURING APPLIANCE You must secure the gas log heater to the fireplace floor.
CONNECTING THE GAS CAUTION NOTICE: A qualified gas appliance installer must connect the heater to the gas supply. Consult all local codes. Use new black iron or steel pipe. Internally tinned copper or copper tubing can be used per National Fuel Code, section 2.6.3, providing gas meets hydrogen sulfide limits, and where permitted by local codes. Gas piping system must be sized to provide minimum inlet pressure (Listed on Data Plate) at the maximum flow rate (BTU/Hr).
WARNING CHECKING GAS PRESSURE Connecting directly to an unregulated propane/LPG tank can cause an explosion. The heater gas inlet connection is a 3/8" NPT at the valve. On all control type units, the inlet connection is on the right side of unit. To connect from the opposite side, route the pipe around the back portion of the unit. When tightening up the joint to the valve, hold the valve securely to prevent movement.
ELECTRICAL WIRING (MILLI-VOLT) CAUTION The milli-volt valve is a self-powered combination gas control THAT DOES NOT REQUIRE 110 VAC TO OPERATE. Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.
ELECTRICAL WIRING (MILLI-VOLT) CONNECTING REMOTE RECEIVER Remote Wire Connectors THESE INSTRUCTIONS SUPERCEDE THE SECTION ENTITLED “HEARTH MOUNT” IN THE MILLI-VOLT HAND-HELD REMOTE INSTRUCTIONS SUPPLIED WITH THE REMOTE. 1. Cut cable to length (approximately 12") for placement in the fireplace. 2. Strip back 1/4" of the insulation from both ends of each wire. 3. Connect two .25 female connectors to the wires at one end of the cable. 4.
ELECTRICAL WIRING (MILLI-VOLT) 5. Route wiring harnesses through large hole on side of unit. Mount bracket to side of unit with screw provided. See Figure 22. 6. Attach wiring harness to either TP/TH and TH on control valve or to existing wiring harness with two (2) 0.250" male spade terminals for remote or t-stat option. See Figures 22 and 23. 7. Install knob to shaft of t-stat sensor. See Figure 22. 8. Place thermo bulb in front of the firebox for incoming air.
ELECTRICAL WIRING (MILLI-VOLT) OPERATION OF THERMOSTAT SENSOR 1. Follow millivolt lighting instructions on lighting plate attached to unit or in homeownerʼs manual. 2. With control knob in the “ON” position make sure the ON/OFF switch is in the “OFF” position. See Figure 24. 3. The unit is now being controlled by the thermostat sensor. The sensor will now cycle the burners on and off. You can adjust how often the unit cycles by turning the control knob on the sensor.
ROCK WOOL AND LOG PLACEMENT WARNING Before you begin — This unit is supplied with four or five ceramic fiber logs. Do not handle these logs with your bare hands. Always wear gloves to prevent skin irritation from ceramic fibers. After handling the logs, wash your hands gently with soap and water to remove any traces of fibers. The positioning of the logs are critical to the safe and clean operation of this heater.
LOG PLACEMENT 2. Install left log cluster (#2) on pin located near left edge of base. See Figure 27. 3. Install right log cluster (#3) on two pins located on right side of base. See Figure 28. 4. Rest end of top center log (#4) on rear log. Place front end of top center log where right and left cluster logs meet. See Figure 29.
LOG PLACEMENT INSTALLING SPLIT MAPLE LOGS ON GRATE 1. Install back log (#1) on two pins (2) located near the back of base. Check log position and stability. See Figure 30. 2. Install right bottom log (#2) on two (2) pins located on right side of base. See Figure 31. 3. Install left bottom log (#3) on pin located on right side of base. See Figure 32. 4. Lay back end of center top log (#4) on the center of back log. Position front end of center top log (#6) on protrusion of bottom left log. See Figure 33.
LOG PLACEMENT 5. Place front right middle log (#5) on protrusion of bottom right log. See Figure 34. 6. Position back end right rear-to-middle log (#6) on back log. Rest front end of right rear-to-middle log (#6) on front right middle log. See Figure 35. 7. Install left-to-middle log (#7) on left end of back log and left bottom log. See Figure 36. 8. Lay back end of left front log (#8) in recessed area of middle of center top log. See Figure 37.
FLAME APPEARANCE CAUTION PLACING THE DECORATIVE ROCK DO NOT sprinkle volcanic rock on the logs, around the pilot, or on or near burners. This may cause sooting. Place volcanic rock only on the floor of the fireplace. During initial operation of the new heater, burning logs will give off a paper burning smell and orange flames will be present. Simply open the windows for a few hours to vent the odor. Flames from the pilot, front and rear burner should be visually checked as soon as the heater is installed.
CHECKING THE BURNER FLAME In normal operation at full rate after 15 minutes, the following flame appearances should be observed: Figure 42 - Correct Appearance of Rear Flames of Kentucky Stack Figure 43 - Correct Appearance of Rear Flames of Split Maple The left and right rear flames should be yellow and extend 1"-2" above the mid log top surfaces. The yellow flames should not contact the logs. There should be glowing embers on the front burner.
OPERATING INSTRUCTIONS WARNING FOR YOUR SAFETY READ BEFORE LIGHTING If you do not follow these instruction exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance is equipped with a piezo ignition device which lights the pilot. If piezo is not working properly see Match Lighting Instructions, page 35. B. BEFORE OPERATING smell all around the appliance area for gas.
OPERATING INSTRUCTIONS MANUAL CONTROL LIGHTING INSTRUCTIONS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. STOP! Read the safety information. Make sure the manual shutoff valve is fully open. This heater is equipped with an ignition device (piezo) which automatically lights the pilot. See Figure 44, page 32 for the location of the piezo ignitor and control knob. Push in gas control knob slightly and turn control knob clockwise to the OFF position. NOTE: Knob cannot be turned to OFF unless knob is pushed in slightly.
OPERATING INSTRUCTIONS MILLI-VOLT CONTROL LIGHTING INSTRUCTIONS 1. STOP! Read the safety information label. 2. Make sure the manual shutoff valve is fully open. 3. This gas log set is equipped with an ignition device (piezo) which automatically lights the pilot. If piezo ignitor does not light the pilot, refer to instructions for Match Lighting Instructions, page 35. 4. Turn gas control knob clockwise to the OFF position and turn ON/OFF switch to OFF position. 5. Wait (5) minutes to clear out any gas.
OPERATING INSTRUCTIONS AND CLEANING AND SERVICING MATCH LIGHTING INSTRUCTIONS 1. Remove any items necessary for easy access to the pilot (for example: logs, screens, etc.). 2. Follow appropriate lighting instructions found previously. Instead of pushing and releasing the piezo button, light a match and hold the flame to the end of the pilot and ignite the pilot. 3. After control knob has been released and pilot stays lit, reinstall any items that were removed for pilot access. 4.
WARNING WARNING TROUBLESHOOTING Turn appliance OFF and allow to cool before servicing. Only a qualified service person should service and repair the heater. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button is pressed, there is no spark at ODS/pilot. 1. Ignitor electrode positioned wrong. 2. Ignitor electrode is broken. 3. Ignitor electrode not connected to ignitor cable. 4. Ignitor cable pinched or wet. Keep ignitor cable dry.
WARNING TROUBLESHOOTING If the gas quality is bad, your pilot may not stay lit, the burners may produce soot and the heater may backfire when lit. If the gas quality or pressure is low, contact your local gas supplier immediately. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights, but flame goes out when control knob is released. 1. Control knob not fully pressed in. 2. Control knob not pressed in long enough. 1. Press in control knob fully. 2.
REPLACEMENT PARTS BURNER ASSEMBLY 4 10 3 1 2 7 13 12 5 (Milli-Volt) 9 5 (Manual) 11 8 6 WARNING 11 38 Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this appliance may result in property damage or personal injury.
REPLACEMENT PARTS LIST REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER.
REPLACEMENT PARTS LIST REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER.
REPLACEMENT PARTS LIST REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER.
NOTES 42 59D1015
NOTES 59D1015 43
MONESSEN HEARTH SYSTEMS LIMITED LIFETIME WARRANTY POLICY LIFETIME WARRANTY The following components are warranted for life to the original owner, subject of proof of purchase: Firebox, Combustion Chamber, Heat Exchanger, Grate, and Stainless Steel Burners. FIVE YEAR WARRANTY The following components are warranted for 5 years to the original owner, subject of proof of purchase: Vent Free Ceramic Fiber Logs and Aluminized Burners.
