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860024
MJ27 cover
10/08

READ AND SAVE THESE INSTRUCTIONS

Unvented Gas Log Heater or

Vented Decorative Appliance

Installation and Operating 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 explosion may result causing property damage,

personal injury or loss of life.
– 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.

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.

MODELS: MJ27NR, MJ27PR

Natural Gas or Liquid Propane

Control Type: Millivolt Hi/Low

86D0024 10/08 Rev. 1

Содержание Mojo MJ27NR

Страница 1: ...her 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 ...

Страница 2: ...s 11 Floor Clearance 16 Fireplace Preparation 17 Installing Vented Applications 18 Connecting the Gas 19 Checking Gas Pressure 20 Millivolt 20 Electrical Wiring Millivolt 21 Connecting Remote Receiver 22 Checking System Operation 22 Log Placement 23 Ember and Rock Installation 27 Andiron Installation 27 Flame Appearance 28 Checking Burner Flames 29 Operating Instructions 30 For Your Safety Read Be...

Страница 3: ...nce OWNER Please retain these instructions for future reference IMPORTANT Read these instructions carefully before installing or trying to operate this vent free gas heater 8 CARBON MONOXIDE POISONING Early signs of carbon monoxide poisoning are similar to the flu with headaches dizziness and or nausea If you have these signs obtain fresh air immediately Have the heater serviced as it may not be o...

Страница 4: ... and will disappear with continued use 20 Input ratings are shown in BTU per hour and are for elevations up to 2 000 feet For elevations above 2 000 feet input ratings should be reduced 4 percent for each 1 000 feet above sea level Refer to the National Fuel Gas Code 21 The appliance and its appliance main gas valve must be disconnected from the gas supply piping system during any pressure testing...

Страница 5: ...agile handle with care caution Carefully inspect the contents for shipping damage If any parts are missing or damaged immediately inform the dealer from whom you purchased the appliance Do not attempt to install any part of the appliance unless you have all parts in good condition What you will need for installation You should have the following items available before proceeding with installation ...

Страница 6: ...ontrol 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 ON Valve position to turn ON OFF log set with remote switch thermostat Pilot ODS The gas log heater is fitted with a specially designed safety pilot ODS assembly which senses the amount of oxygen available in the room and shuts the gas log heater off if the oxygen...

Страница 7: ...es installed in that space An unconfined space is defined as a space whose volume is not less than 50 cubic feet per 1 000 BTU per hour 4 8 m3 per kw of the aggregate input rating of all appliances installed in that space Rooms communicating directly with the space in which the appliances are installed through openings not furnished with doors are considered a part of the unconfined space Unusuall...

Страница 8: ...re a door between the two rooms the calculation would be based only on the room with the heater BTU hr 151 2 x 12 x 8 x 1000 29760 BTU hr 50 GENERAL INSTALLATION INFORMATION Figure 1 Example of a Large Room with 1 2 Wall Divider Counter Fireplace If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction...

Страница 9: ... 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 Figure 2 Minimum Hearth Dimension This appliance is for installation only in a solid fuel burning masonry or UL127 factory built fireplace vent free appliance or in listed ventless firebox enclosure...

Страница 10: ...al such as refractory brick may be used to line the floor of the fireplace in order to raise the height of the gas log set in relation to a restrictive barrier If the unit is raised the minimum height dimension listed in the homeowner s manual must not be exceeded NOTE If the log set is equipped with a remote receiver a restrictive barrier may reduce the battery life by increasing the ambient temp...

Страница 11: ...ces The dimensions shown in Figures 4 through 11 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 instruction...

Страница 12: ...le must be at least 1 2 thick Sheet metal should not be installed onto combustible material IMPORTANT If you cannot meet these minimum clearances you must operate the heater with chimney flue damper open Refer to Installing Vented Applications found on Page 18 TABLE A Heat Resistant Material Requirements with no Mantel or Combustible Projection CLEARANCES and HEIGHT REQUIREMENTS Heat Resistant Mat...

Страница 13: ...Table B TABLE B Heat Resistant Material Heights and Mantel Location Heat Resistant Requirements for Safe Installation with Wood Material Mantel Shelf or Other Combustible Projection Measurement MJ27 12 or more Hood not required Observe profile side elevations shown on Page 14 Figure 8 8 to less than 12 Install hood and observe profiles shown on Page 14 Figure 7 OR extend heat resistant material to...

Страница 14: ... above the opening 10 12 8 6 21 2 8 141 2 185 8 221 2 26 FP1999 min mantel clearance Heat Resistant Material Hood Heater in Fireplace or Firebox FP1999 Figure 8 Minimum Mantel Clearance with No Hood MJ27 Example The bottom of the mantel may project from the wall a maximum of 10 at a minimum of 28 above the opening 12 min 28 FP2001 minimum mantel clearance no hood Heat Resis tant Material Heater in...

Страница 15: ... CLEARANCES and HEIGHT requirements Figure 9 is an example of an unsafe mantel instal lation This mantel projects 4 at 8 above the opening exceeding the maximum acceptable distance of 21 2 The mantel also projects 7 at 141 2 above the opening exceeding the maximum acceptable distance of 6 If your mantel profile is unsafe you may either Raise the mantel to an acceptable height or Remove the mantel ...

Страница 16: ...e must be maintained from the top surface of carpeting tile etc Figure 10 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 Figure 11 13 8 Minimum FP2003 min clear comb floor Heater in Fireplace or Firebox Combustible Material FP2003 Figure 10 M...

Страница 17: ...oting Use a heat resistant sealant Do not seal the chimney flue damper INSTALLING VENTED APPLICATIONS Manual and Millivolt controlled gas logs may be installed as a vented decorative log set in compliance with ANSI Z21 60 and National Fuel Gas Code Section 6 6 Since the gas logs are operated with the damper open non combustible material and minimum mantel requirements do not apply WARNING This app...

Страница 18: ...f the heater is essential to prevent any movement of the gas logs and controls during operation Figure 13 Secure Heater to Floor of Fireplace Firebox Screw Anchor Hole Screw WARNING You must secure the gas log heater to the fireplace floor If not the entire unit may move when you adjust the controls Movement of unit may cause shifting of the gas logs which leads to sooting and improper burning Gra...

Страница 19: ...alve Locations that the Pressure Tapping Point May Be Installed CAUTION Check gas type The gas supply must be the same as stated on the heater s rating plate If the gas supply is different DO NOT INSTALL THE HEATER Contact your dealer for the correct model CAUTION 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 g...

Страница 20: ...int Turn captured screw counter clockwise two or three turns and then place tubing to pressure gauge over test point Use test point OUT closest to control knob After taking pressure reading be sure and turn captured screw clockwise firmly to re seal Do not over torque Check for gas leaks Test all gas joints from the gas meter to the heater valve for leaks using a gas analyzer or soap and water sol...

Страница 21: ...owered combination gas control that does not require 110 Vac to oper ate Figure 16 Wiring Diagram CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation Verify proper operation after servicing ODS Pilot Millivolt Valve TH 3 TP 1 TP TH 2 ...

Страница 22: ...ing Thermostat contacts OPEN Main burner OFF 1 Check gas pressure to the unit If gas pressure is within minimum and maximum on data plate then check pilot voltage 500 Millivolts minimum If the minimum Millivolt reading is not obtainable replace pilot Checking System Operation The Millivolt system and individual components may be checked with a Millivolt meter having a 0 1000 mV range Conduct each ...

Страница 23: ...ly with soap and water to remove any traces of fibers WARNING The positioning of the logs is critical to the safe and clean operation of this heater Sooting and other problems may result if the logs are not properly and firmly positioned in the appliance Never add additional logs or embellishments such as pine cones vermiculite or rock wool to the heater Only use the logs and 2G RW rock wool Failu...

Страница 24: ...wo pins Figure 21 LG555 MJ127 Log 2 10 08 Log 2 LG555 Figure 22 Install Log 2 3 Place log 2 at an angle across the burner by setting the log over the two pins located on top of the burner Figure 22 4 Place log 3 at an angle over log 2 toward the back by matching the rectan gular notch on the bottom of this log with the rectangular protrusion on log 2 Set the notch located on the bottom of this log...

Страница 25: ...l Log 5 6 Place log 5 by matching the rectangular notch on the bottom of the log with the rect angular protrusion on log 2 Set the notch on the bottom of this log over the very far left tong on the grate Figure 25 LG548 MLDV log 6 Log 6 Figure 26 Place Log 6 LG548 7 Place log 6 at an angle over log 5 toward the back by matching the rectangular notch on the bot tom of this log with the rectangular ...

Страница 26: ...n be seen Try to avoid stacking these embers on top of each other Use smaller stringier strands for maximum effect Use as much as needed until desired effect is achieved LG557 MJ27 flickering embers Flickering Ember Area Figure 28 Place Flickering Bright Embers LOG PLACEMENT 8 Place log 7 between the second and third right tong on the grate as shown in Figure 27 LG549 MLDV log 7 Log 7 Figure 27 Pl...

Страница 27: ...ter equally in fireplace Placing the decorative rock FP2012 andiron to bracket Bracket FP2012 Figure 29 Attach Bracket to Andiron FP2013 attach andirons to grate Figure 30 Attach Andirons to Grate FP2013 CAUTION 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 t...

Страница 28: ...tion 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 just touch the top of the thermocouple tip for natural Figure 31 for correct pilot flame If the pilot flame does not touch the thermocouple then the main burner cannot function reliably Refer to Figure 32 for incorrect shape of pilot...

Страница 29: ...g will result During manufacturing fabricating and shipping various components of this appliance are treated with certain oils films or bonding agents These chemicals are not harmful but may produce annoying smoke and smells as they are burned off during the initial operation of the appliance possibly causing headaches or eye or lung irritation This is a normal and temporary occurrence The initial...

Страница 30: ... department C Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it Call a qualified service technician Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part of it has been under water Immediately call a qualified service technician to inspect the appliance and to ...

Страница 31: ...onds to prevent the flame detector from shutting off the gas while the probe is warming up Release the control knob 9 Turn gas control knob counterclockwise to the ON position 10 After the pilot has been lit for one minute the burner can be turned on a Slide the three 3 position button on the remote receiver to the ON position and the main gas flame should ignite in the Max Height Setting b Slide ...

Страница 32: ...ake holes clean will result in sooting and poor combus tion Inspect and clean all burner ports Inspect ODS pilot for operation and accumulation of lint at air intake holes Verify flame pattern and log placement for proper operation Verify smooth and responsive ignition of main burner and rear burner Replace battery in remote control device Turn off heater and allow to cool before cleaning Disconne...

Страница 33: ... Contact local gas company 3 ODS pilot is partially clogged 3 Clean ODS pilot 4 Defective Thermopile 4 Check wire connections Check output should be 500 Millivolts across TH TP and TP Terminals with ON OFF switches off 5 Restrictions in incoming air flow 5 Check for bottom riser on glass door sunken fireplace excessive lava rock cinders densely packed against grate Gas odor even when control knob ...

Страница 34: ... is too small 2 Burner orifice diameter is too small 3 Inlet gas pressure is too low 3 Inlet gas pressure is too low Burner backfires during combustion 1 Manifold pressure is too low 1 Contact local gas company 2 Burner orifice is clogged 2 Clean burner or replace burner orifice Slight smoke or odor during initial operation 1 Burner orifice is clogged or damaged 1 Clean burner or replace burner or...

Страница 35: ...Pilot Regulator 1 14D0469 7 Thermostatic ON OFF 1 RCSIT RCSIT Flame Height Adj 1 Remote Control 8 Injector 1 70D0064 20H2084 9 Andiron Kit not shown 1 FAI135 FAI135 REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER Burner assembly replacement parts Burner assembly Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this applia...

Страница 36: ...0 6 Log 6 1 75D0541 7 Log 7 1 75D0542 8 Log 8 1 86D0019 LOGS REPLACEMENT PARTS list REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER 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 WARNING ...

Страница 37: ... feet above finished grade in the area of the venting including but not limited to decks and porches the following requirements shall be satisfied 1 INSTALLATION OF CARBON MONOXIDE DETECTORS At the time of installation of the side wall horizontal vented gas fueled equipment the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back u...

Страница 38: ...38 86D0024 notes ...

Страница 39: ...fetime Warranty will also be void if the appliance is not operated and maintained according to the operating instructions supplied with the appliance and does not extend to 1 firebox burner assembly damage by accident neglect misuse abuse alteration negligence of others including the installation thereof by unqualified installers 2 the costs of removal reinstallation or transportation of defective...

Страница 40: ...OCTOBER 2008 86D0024 Rev 1 MHSC 149 Cleveland Drive Paris Kentucky 40361 www mhsc com ...

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