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UNVENTED GAS LOG HEATER OR
VENTED DECORATIVE APPLIANCE
INSTALLATION AND OPERATING INSTRUCTIONS
This appliance may be installed
in an aftermarket, permanently
located, manufactured (mobile)
home, where not prohibited by
local codes.
This appliance is only for use
with the type of gas indicated on
the rating plate. This appliance is
not convertible for use with other
gases.
This is an unvented gas-fired
heater. It uses air (oxygen)
from the room in which it is
installed. Provisions for adequate
combustion and ventilation air
must be provided.
Refer to page 8.
MODELS: HVFL18 and HVFL24
Natural Gas or Propane/LPG
Control Type: Manual and Milli-Volt
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.
–
–
–
READ AND SAVE THESE INSTRUCTIONS
WARNINGS
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any 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 supplier's
instructions.
• If you cannot reach your gas supplier, call the
fire department.
Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
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Table of Contents
Related Manuals for Monessen Hearth HVFL18
Summary of Contents for Monessen Hearth HVFL18
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Page 1: Installation And Operating Instructions
Refer to page 8. READ AND SAVE THESE INSTRUCTIONS MODELS: HVFL18 and HVFL24 Natural Gas or Propane/LPG Control Type: Manual and Milli-Volt 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. -
Page 2: Table Of Contents
CONTENTS Important Safety Information ... 3 Getting Started ...5 Product Features and Specifications ... 6 Natural Gas ...6 Propane/LP ...6 Ignition Controls ...7 Pilot ...7 Thermal Generator ...7 General Installation Information ... 7 Codes ...7 Adequate Combustion and Ventilation Air ... 7 Fireplace and Hearth Dimensions ... -
Page 3: Important Safety Information
INSTALLER Please leave these instructions with the appliance. 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. - Page 4 IMPORTANT SAFETY INFORMATION Continued from page 3 16. Keep room area clear and free from combustible materi- als, gasoline and other flammable vapors and liquids. 17. Unvented gas heaters are a supplemental zone heater. They are not intended to be the primary heating appli- ance.
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Page 5: Getting Started
MAKE SURE YOU HAVE RECEIVED ALL PARTS: Check your packing list to verify that all listed parts have been received. You should have the following: • Unvented gas log grate/burner assembly • Installation/operating instructions • Ceramic fiber logs / Refractory logs The milli-volt controlled version of this heater is the only style designed to be operated with optional devices for ON/OFF functions. -
Page 6: Product Features And Specifications
PRODUCT FEATURES NATURAL GAS NOTE: An external regulator is required to reduce supply pressure to a maximum of 10 natural gas systems operating at higher pressure. Manual Pressure Regulator Pressure: Setting: 4.0" w.c. Gas Inlet Pressure: Max. 10 " w.c. Min. -
Page 7: Ignition Controls
IGNITION CONTROLS Piezo ignitor allows ignition of the pilot without the use of matches or batteries. Manual control has three (3) positions: - All gas to the gas logs is shut off at the valve. - Valve position to light/maintain a standing pilot. - Variable position corresponding to desired flame height. -
Page 8: General Installation Information
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… ADEQUATE COMBUSTION AND VENTILATION AIR This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. - Page 9 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: Consider two connecting rooms with an open area between, with the following dimensions: If there were a door between the two rooms the calculation would be based only on the room with the heater.
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Page 10: Fireplace And Hearth Dimensions
Type Unvented Room Heaters per IAS Requirement No. 2-97 ANSI Z21.91-2001 (typically referred to as a "Universal Firebox"), as long as firebox hearth dimensions meet the minimum hearth dimensions shown below. HVFL24 with 30" Logs Model HVFL18 18" HVFL24 "... -
Page 11: Placement In A Fireplace With A Restrictive Barrier
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. -
Page 12: Clearances And Height Requirements
CLEARANCES 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. -
Page 13: Clearances And Height Requirements
Resistant Material Heater in Fireplace or Firebox Figure 5 - Measuring Heat Resistant Material REQUIREMENTS FOR SAFE INSTALLATION HVFL18 Hood not required. Hood not required. Extend heat resistant material to at least 8" and install hood. See Figure 5. Measure... - Page 14 Hood Heater in Fireplace or Firebox REQUIREMENTS FOR SAFE INSTALLATION WITH WOODEN MANTEL, SHELF OR OTHER COMBUSTIBLE PROJECTION HVFL18 8" or More of Heat Resistant Material HVFL24 Hood not required. Observe profile (side elevations) shown in Figure 9, page 16.
- Page 15 10" 8" 6" Heat Resistant Material Heater in Fireplace or Firebox Figure 7 - Minimum Mantel Clearance with No Hood - HVFL18 12" 10" 8" 6" " Heat Resistant Material 8" Hood Heater in Fireplace or Firebox Figure 8 - Minimum Mantel Clearance with Hood - All Models...
- Page 16 CLEARANCES HEIGHT REQUIRMENTS 10" or less Heat Resistant Material Heater in Fireplace or Firebox Figure 9 - Minimum Mantel Clearance with No Hood — HVFL24 7" 6" 4" Figure 10 - Minimum Mantel Clearance with No Hood - HVFL24 12" min. 28" Example: The bottom of the mantel may project from the wall a maximum of 10"...
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Page 17: 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. -
Page 18: Fireplace Preparation
FIREPLACE PREPARATION BEFORE FULLY INSTALLING THE UNIT: • Turn OFF the gas supply to the fireplace or firebox. • 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. -
Page 19: 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. -
Page 20: Connecting The Gas
CONNECTING THE GAS 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. -
Page 21: Checking Gas Pressure
C o n n e c t i n g d i r e c t l y t o a n unregulated propane/LPG tank can cause an explosion. Test all gas joints from the gas meter to the heater valve for leaks using a gas analyzer or soap and water solution after completing connection. -
Page 22: Electrical Wiring (Milli-Volt)
ELECTRICAL WIRING (MILLI-VOLT) 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. Wall Switch On/Off... -
Page 23: Connecting Remote Receiver
CONNECTING REMOTE RECEIVER 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 " of the insulation from both ends of each wire. - Page 24 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.
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Page 25: Operation Of Thermostat Sensor
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. -
Page 26: Rock Wool And Log Placement
ROCK WOOL LOG PLACEMENT 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. -
Page 27: Log Placement
Install left log cluster (#2) on pin located near left edge of base. See Figure 27. Install right log cluster (#3) on two pins located on right side of base. See Figure 28. Rest end of top center log (#4) on rear log. Place front end of top center log where right and left cluster logs meet. -
Page 28: Split Maple
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. - Page 29 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.
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Page 30: Flame Appearance
FLAME APPEARANCE 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. -
Page 31: Checking Burner Flames
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 Figure 43 - Correct Appearance of Rear Flames of Kentucky Stack of Split Maple The left and right rear flames should be yellow and extend 1"-2"... -
Page 32: Operating Instructions
OPERATING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE LIGHTING 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. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. -
Page 33: Manual Control Lighting Instructions
MANUAL CONTROL LIGHTING INSTRUCTIONS 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 NOTE: Knob cannot be turned to OFF unless knob is pushed in slightly. -
Page 34: Milli-Volt/Thermostat Control Lighting Instructions
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. -
Page 35: Match Lighting Instructions
OPERATING INSTRUCTIONS 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. -
Page 36: Troubleshooting
TROUBLESHOOTING Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed, there is no spark at ODS/pilot. Appliance produces unwanted odors. Appliance shuts off during use. Gas odor even when control knob is in OFF position. When ignitor button is pressed, there is spark at ODS pilot, but no ignition. - Page 37 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 ODS/pilot lights, but flame goes out when control knob is released.
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Page 38: Replacement Parts
REPLACEMENT PARTS BURNER ASSEMBLY 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. 5 (Milli-Volt) 5 (Manual) 59D1015... -
Page 39: Replacement Parts List
Flex Connector Wall Switch Kit Wall Thermostat Kit Hand Held Remote Hand Held Thermostat Remote Remote Receiver Cover Ember Remote Receiver Cover Metal Touch Light Manual Touch Light T-stat 59D1015 HVFL18 Natural Propane 14D0503 14D0503 00K0632 00K0632 59D0050 59D0050 59D0058... -
Page 40: Logs
REPLACEMENT PARTS LIST REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER. KENTUCKY STACK LOGS Item Description Back Log Left Log Cluster Right Log Cluster Top Center Log KSCL18 KSCL24 KSCL30 59D1238K 59D1248K 59D1258K 59D1234K 59D1244K 59D1254K 59D1230K 59D1240K 59D1250K 59D1239K 59D1249K 59D1259K Failure to position the parts in accordance with these diagrams or failure to use only parts specifically... - Page 41 REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER. SPLIT MAPLE LOGS Item Description Back Log Right Bottom Log Left Bottom Log Top Center Lot Top Right Middle Log Right Rear-To-Middle Log Right Left-To-Middle Log Left Front Log 59D1015 SMRL18 SMRL24 SMRL30 59D1260 59D1268 59D1276...
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Page 42: Massachusetts Residents Only
MASSACHUSETTS RESIDENTS ONLY: PLEASE READ AND FOLLOW THESE SPECIAL REQUIREMENTS NOTE REGARDING VENTED PRODUCTS This product must be installed by a licensed plumber or gas fi tter when installed within the Commonwealth of Massachusetts. Any residence with a direct vent product must have a CO detector installed in the residence. Installation of the fi... - Page 43 SPECIAL REQUIREMENTS CONTINUED 2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accor- dance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certi- fi ed. 3. SIGNAGE. A metal or plastic identifi cation plate shall be permanently mounted to the exterior of the build- ing at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment.
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Page 44: Warranty
Ceramic Fiber Logs and Aluminized Burners. BASIC WARRANTY Monessen Hearth Systems (MHS) warrants the components and materials in your gas appliance to be free from manufacturing and material defects for a period of two years from date of installation. After installation, if any of the components manufactured by MHS in the appliance are found to be defective in materials or workmanship, MHS will, at its option, replace or repair the defective components at no charge to the original owner.