MHSC MJ27NR Installation And Operating Istructions Download Page 4

86D0024

IMPORTANT SAFETY INFORMATION

continued from page 3

15. This  is  an  unvented  gas-ired  heater.  It  uses  air 

(oxygen) from the room in which it is installed. Pro

-

visions for adequate combustion and ventilation air 
must be provided. See page 8. 

16. Keep  room  area  clear  and  free  from  combustible 

materials, gasoline and other lammable vapors and 

liquids.

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. During  manufacturing,  fabricating  and  shipping, 

various  components  of  this  appliance  are  treated 

with  certain  oils,  ilms  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 break-in operation should last four hours 

to properly cure logs and rock wool, with the burner 

at the highest setting. Provide maximum ventilation 

by opening windows or doors to allow odors to dis-
sipate. Any odors remaining after this initial break-in 
period will be slight 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  of  that  system  at  test 

pressures in excess of 1/2 psig (3.5 kPa).

22. The appliance must be isolated from the gas supply 

piping system by closing its equipment shutoff valve 
during any pressure testing of the gas supply piping 
system at test pressures equal to or less than 1/2 
psig (3.5 kPa).

23.   Do not use this room heater if any part has been 

under  water.  Immediately  call  a  qualiied  service 

technician to inspect the room heater and to replace 
any part of the control system and any gas control 
which has been under water.

24. This appliance must not be used with glass doors 

in the closed position. This can lead to pilot outages 

and severe sooting outside the ireplace. 

25. Never burn solid fuels in a ireplace where a unvented 

room heater is installed.

26. Always have a ireplace screen in place when the 

appliance  is  in  operation  and,  unless  other  provi-
sions  for  combustion  air  are  provided,  the  screen 
must have an opening(s) for induction of combustion 
air. 

Never  connect  unit  to  private  (non-

utility) gas wells.  This gas is commonly 

known as wellhead gas.

W

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MASSACHUSSETTS RESIDENTS ONLY: 

Please refer to Pages 40 & 41 for 

additional information.

Summary of Contents for MJ27NR

Page 1: ...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...

Page 2: ...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...

Page 3: ...ce 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...

Page 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...

Page 5: ...gile 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...

Page 6: ...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 ON Valve position to turn ON OFF log set with remote switch the...

Page 7: ...ces installed in that space An unconined space is deined 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 ins...

Page 8: ...etween 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...

Page 9: ...nted Room Heaters per IAS Requirement No 2 97 ANSI Z21 91 2001 typically referred to as a Universal Firebox as long as irebox hearth dimensions meet the minimum hearth dimensions shown below Figure 2...

Page 10: ...actory brick may be used to line the loor of the ireplace 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...

Page 11: ...ions shown in Figures 4 through 11 and deined in the ireplace manufacturer s instructions are minimum clearances to maintain when installing this heater Left and right clearances are determined when f...

Page 12: ...st 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 lue damper open Refer to Insta...

Page 13: ...E 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 Ho...

Page 14: ...aximum of 6 at a minimum of 141 2 above the opening 10 12 8 6 21 2 8 141 2 185 8 221 2 26 Heat Resistant Material Hood Heater in Fireplace or Firebox FP1999 Figure 8 Minimum Mantel Clearance with No H...

Page 15: ...EIGHT 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 a...

Page 16: ...must be maintained from the top surface of carpeting tile etc Figure 10 OR The gas log heater may be installed nearer to the loor if a minimum of 14 of noncombustible material such as slate or marble...

Page 17: ...heat resistant sealant Do not seal the chimney lue damper INSTALLING vENTED APPLICATIONS Manual and Millivolt controlled gas logs may be installed as a vented decorative log set in compliance with ANS...

Page 18: ...s 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 heat...

Page 19: ...ns 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 hEAT...

Page 20: ...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 ca...

Page 21: ...ation 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 dangero...

Page 22: ...heck B Reading 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...

Page 23: ...wash your hands gently with soap and water to remove any traces of ibers WARNING The positioning of the logs is critical to the safe and clean operation of this heater Sooting and other problems may...

Page 24: ...e 21 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 to...

Page 25: ...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 Figur...

Page 26: ...nt logs where they can 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 Flickerin...

Page 27: ...ll adjust left to right to center equally in ireplace PLACING ThE DECORATIvE ROCk Bracket FP2012 Figure 29 Attach Bracket to Andiron Figure 30 Attach Andirons to Grate FP2013 CAUTION DO NOT sprinkle v...

Page 28: ...dition periodically check the lames visually during operation ChECkING ThE PILOT FLAME The pilot lame must always be present when the heater is in operation It should just touch the top of the thermoc...

Page 29: ...During manufacturing fabricating and shipping various components of this appliance are treated with certain oils ilms or bonding agents These chemicals are not harmful but may produce annoying smoke...

Page 30: ...all the ire 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 qualiied service technici...

Page 31: ...to prevent the lame 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 li...

Page 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 lame pattern and log...

Page 33: ...2 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...

Page 34: ...is too small 2 Burner oriice diameter is too small 3 Inlet gas pressure is too low 3 Inlet gas pressure is too low Burner backires during combustion 1 Manifold pressure is too low 1 Contact local gas...

Page 35: ...egulator 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 YO...

Page 36: ...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...

Page 37: ...7 feet above inished grade in the area of the venting including but not limited to decks and porches the following requirements shall be satisied 1 INSTALLATION OF CARBON MONOXIDE DETECTORS At the tim...

Page 38: ...38 86D0024 NOTES...

Page 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 irebox burner assembly da...

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

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