Read and save these instructions 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 7. Warnings if the information in this manual is not followed exactly, a fire or ...
81d0108 contents important safety information .................................. 3 getting started .......................................................... 5 product features and specifications .................... 6 natural gas .........................................................6 propane/lp...
81d0108 3 important safety information 10. This unit complies with ansi z21.11.2-2007 unvented heaters and also complies with ansi z21.60 decorative vented appliances for solid fuel burning fireplaces. State and local codes may only allow operation of this appliance in a vented configuration. Check ...
81d0108 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. 18. Unvent...
81d0108 5 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 burner assembly • two (2) plastic bags containing crushed volcanic rock • installation/operating instructions • two (2) ancho...
6 81d0108 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. Millivolt regulator pressure setting: 3.5" w.C. Pilot regulator: 3.5" w.C. Gas inlet pressu...
81d0108 7 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...
8 81d0108 w h the following formula can be used to determine the maximum heater rating per the definition of unconfined space: btu / hr = (l1 + l) ft x (w) ft x (h) ft. X 1000 btu / hr 50 consider two connecting rooms with an open area between, with the following dimensions: l 1 = 15 1 / ft., l = 1 ...
81d0108 9 a c d b fireplace and hearth dimensions use manufacturer's installation and clearance requirements as defined in their manual. The nb series unvented room heater is approved for installation into the following unvented fireplaces: vf series fireboxes, magnum36/42, lo-rider36 or buf the nb ...
10 81d0108 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 open - ing of the fireplace. Some examples of barr...
81d0108 11 16" 42" clearances and height requirements sidewall and ceiling clearances: the sides of the fireplace opening must be at least 16" from any combustible wall. The ceiling must be at least 42" from the top of the fireplace opening. Figure 4 - sidewall and ceiling clearances the dimensions ...
1 81d0108 measure this distance heater in fireplace or firebox heat resistant material figure 5 - measuring heat resistant material 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, sh...
81d0108 13 heater in fireplace or firebox 8" or more of heat resistant material hood clearances and height requirements figure 6 - measuring heat resistant material for mantel heat resistant material (minimum requirements) with wooden mantel or other combustible projection: to install the heater wit...
1 81d0108 heater in fireplace or firebox heat resistant material hood 10" 12" 8" 6" 2 1 / 2 " 8" 14 1 / 2 " 18 5 / 8 " 22 1 / 2 " 26" heater in fireplace or firebox heat resistant material 10" 8" 6" 2 1 / 2 " 8" 14" 20 1 / 2 " 24 5 / 8 " 28" clearances and height requirements figure 8 - minimum mant...
81d0108 15 heater in fireplace or firebox heat resistant material 10" or less 12" min. 28" 2 1 / 2 " 8" 6" 7" 14 1 / 2 " 4" figure 10 - minimum mantel clearance with hood - 24nb (example of unsafe installation) figure 9 - minimum mantel clearance with no hood — 24nb example: the bottom of the mantel...
16 81d0108 heater in fireplace or firebox 1 3 / 8 " minimum combustible material 14" minimum heater in fireplace or firebox combustible material this distance may now be less than 1 3 / 8 " floor clearance the gas log heater must be installed at least 1 3 / 8 " above any combustible flooring materia...
81d0108 17 damper stop damper figure 13 - damper stop installation. 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, dr...
18 81d0108 installing vented applications placing and securing appliance assembly procedure: 1. Center the gas log unit on the fireplace or firebox. Make certain the front of the burner sits inside the front edge of the fireplace or firebox. 2. Anchor holes are located on the right and left sides of...
81d0108 19 pipe coupling to heater valve gas supply inlet connecting the gas notice: a qualified gas appliance installer must connect the heater to the gas supply. Consult all local codes. Important: hold heater valve firmly with a wrench to prevent movement when connecting to inlet pipe. Manual shu...
0 81d0108 checking gas pressure 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 valv...
81d0108 1 electrical wiring (milli-volt) the milli-volt valve is a self-powered combination gas control that does not require 110 vac to oper - ate. Connecting optional wall switch or thermostat 1. Use 18 awg, two-wire cable, 15 feet maximum length. . At one end of the cable, connect both wires to t...
81d0108 remote receiver remote wire connectors remote wire connectors valve electrical wiring (milli-volt) connecting remote receiver 1. Set remote receiver. See instructions included in receiver kit. 2. Connect the two (2) 1/4" female connectors to the tp/th and th terminals on the control valve. F...
81d0108 3 dime-size rock wool log placement before you begin — this unit is supplied with seven (7) 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 wate...
81d0108 log placement 5. Place left front log (#5) on left pin located on burner and left grate bar. Rest top right portion of log on right front log. See figure 24 6. Place top left log (#6) on left rear log (#4) and left front log (#5) using locating grooves on bottom of #6 and locating blocks on ...
81d0108 5 ember, grate, and rock installation cast iron grate b . A. Cast iron grate i slot key hole slot figure 29 - installing cast iron grate placing the decorative rock caution do not sprinkle volcanic rock on the logs, around the pilot, or on or near burners. This may cause sooting. Place volca...
6 81d0108 flame appearance flames from the pilot and burner should be visually checked as soon as the heater is installed. In addition, periodically check the flames visually during operation. Checking the pilot flame the pilot flame must always be present when the heater is in operation. It should ...
81d0108 7 in normal operation at full rate after 15 minutes, the following flame appearances should be observed: figure 32 - correct appearance of rear flames of highland oak burner will have a random pattern of yellow flames as shown in figure 35. There should be glowing embers on the front burner....
8 81d0108 figure 33 - location of piezo ignitor, control knobs and switch 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 30. B. Before operating smell all around the appliance area for gas. Be ...
81d0108 9 operating 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...
30 81d0108 operating instructions and cleaning and servicing cleaning and servicing annual inspection and cleaning by your dealer or qualified service technician is recommended to prevent malfunction and/or sooting. Periodic cleaning - refer to parts diagram for location of items discussed below. • ...
81d0108 31 note: all troubleshooting items are listed in order of operation. Troubleshooting w arning w arning turn appliance off and allow to cool before servicing. Only a qualified service person should service and repair the heater. Observed problem possible cause remedy when ignitor button is pr...
3 81d0108 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. W arning observed problem possible cause remedy ods/pilot lights, b...
81d0108 33 6 1 2 3 4 7 5 7 replacement parts 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. W arning burner assembly.
3 81d0108 replacement parts list replacement parts are available through your retailer. Burner assembly item qty 18nb 24nb natural propane natural propane 1 piezo ignitor 1 1d0503 1d0503 1d0503 1d0503 piezo wire 1 00k063 00k063 00k063 00k063 3 burner 1 81d00 81d010 81d0515 81d050 control valve 1 1d0...
81d0108 35 2 3 4 5 6 7 8 1 (beneath #7) replacement parts are available through your retailer. Replacement parts list 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 injur...
36 81d0108 note regarding vented products this product must be installed by a licensed plumber or gas fitter when installed within the commonwealth of massachu - setts. Any residence with a direct vent product must have a co detector installed in the residence. Installation of the fireplace or vente...
81d0108 37 special requirements continued 2. Approved carbon monoxide detectors. Each carbon monoxide detector as required in accordance with the above provisions shall comply with nfpa 720 and be ansi/ul 2034 listed and ias certified. 3. Signage. A metal or plastic identification plate shall be per...
38 81d0108 notes.
81d0108 39 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 warrante...
August 2008 81d0108 • rev. 3 mhsc 19 cleveland drive • paris, kentucky 0361 www.Mhsc.Com.
