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Warning:  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.
See page 8. 

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. 

READ AND SAVE THESE INSTRUCTIONS

DHHP/NT

Natural Gas or Propane/LPG

15,000 to 30,000 Btu/Hr

with Thermostat 

VENT-FREE HEARTH HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

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.

Improper installation, adjustment, alteration, service, or 
maintenance can cause injury or property damage. Refer 
to this manual for correct installation and operational 
procedures.  For  assistance  or  additional  information 
consult a qualified installer, service agency, or the gas 
supplier. 

Shown with Optional Mantel 

Which Features a Built-In Base

Summary of Contents for BTU/Hr

Page 1: ... 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 ...

Page 2: ...ion 8 Determining Fresh Air Flow for Heater Location 9 Ventilation Air 10 Installation 12 Locating Heater 12 Installation Options 13 Connecting to Gas Supply 17 Operating Instructions 19 For Your Safety Read Before Lighting 19 Lighting Instructions 20 To Turn Off Gas to Heater 21 Thermostat Control Operation 21 Match Lighting Instructions 21 Inspecting Heater 22 Pilot Flame Pattern 22 Burner Flame...

Page 3: ...ith the apliance 4 Do not place clothing or other flammable material on or near the appliance Never place any objects on the heater 5 Make sure screen is in place before running heater 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 ma...

Page 4: ...erating heater above elevations of 4 500 feet could cause pilot outage 22 To prevent performance problems do not use a propane LP fuel tank of less than 100 lbs capacity 23 This unit complies with ANSI Z21 11 2 2001 Unvented Heaters 24 Caution Candles incense oil lamps etc produce com bustion byproducts including soot Vent free appliances will not filter or clean soot produced by these types of pr...

Page 5: ...s required to reduce supply pressure to a maximum of 13 W C Thermostat Pressure Regulator Pressure Setting 10 w c Gas Inlet Pressure Max 13 w c Min 11 w c SPECIFICATIONS AND LOCAL CODES LOCAL CODES Follow all local codes In the absence of local codes use the latest edition of The National Fuel Gas Code ANS Z223 1 also known as NFPA 54 Available from American National Standards Institute Inc Nation...

Page 6: ...PACKING 1 Remove heater from carton 2 Remove all protective packaging applied to heater for shipment 3 Make sure your heater includes the following trim hood mounting bracket hardware package which includes two 2 90 angled brackets and shims four 4 trim screws three 3 hood screws two 2 wall mounting screws two 2 wall spacers 4 Check heater for any shipping damage If heater is damaged promptly info...

Page 7: ...gled shim in the outside corner slot where the top and side trims meet Next slide another bracket and shim to the inside corner slot See Figure 4 4 Hold the corners together securely Tighten screws on both brackets with flat head screwdriver Make sure the corners are flush and there are no spaces 5 Repeat steps 2 through 4 for other side trim 7 Place the assembled trim on front of heater cabinet A...

Page 8: ...ion and ventilation However in buildings of unusually tight construction you must provide additional fresh air Unusually tight construction is defined as construction where a walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm 6x10 11 kg per pa sec m2 or less with openings gasketed or sealed and b weather stripping has been added on...

Page 9: ...ot include direct vent gas appliances Direct vent draws combustion air from the outdoors and vents to the out doors 4 Compare the maximum Btu Hr the space can support with the actual amount of Btu Hr used _________________ Btu Hr maximum the space can support _________________ Btu Hr actual amount of Btu Hr used Example 51 200 Btu Hr maximum the space can support 60 000 Btu Hr actual amount of Btu...

Page 10: ...tilation grills or ducts You must provide two perma nent openings one within 12 of the ceiling and one within 12 of the floor Connect these items directly to the outdoors or spaces open to the outdoors These spaces include attics and crawl spaces Follow the National Fuel Gas Code NFPA 54 ANSI Z223 1 Section 5 3 Air for Combustion and Ventilation for required size of ventilation grills or ducts IMP...

Page 11: ...RNING 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 INSTALLATION ITEMS Before installing heater make sure you have the items listed below external regulator supplied by installer for propane LPG and 1 2 lb natural gas systems piping check local codes pi...

Page 12: ...ed in this manual Purchase the optional mantel and hearth base from your dealer See Accessories pages 28 and 29 The heater may also be mounted on a wall Optional mantel cannot be used if mounting heater on a wall Maintain the minimum clearances shown in Figure 8 If you can provide greater clearances from floor ceiling and joining wall WARNING Figure 8 Mounting Clearances As Viewed From Front of He...

Page 13: ... this is beneficial installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture See Fresh Air for Combustion and Ventilation pages 8 through 10 INSTALLATION If you install the heater in a home garage heater pilot and burner must be at least 18 inches above floor locate heater where moving vehicle will not hit it CAUTION For convenience and efficiency i...

Page 14: ...l holes at marked locations using 9 64 drill bit 2 Place mounting bracket onto wall Line up last hole on each end of bracket with holes drilled in wall 3 Insert mounting screws through bracket and into wall studs 4 Tighten screws until mounting bracket is firmly fastened to wall studs NOTE You may mount the unit anywhere on a concrete wall Figure 9 Mounting Bracket Clearances Attaching Mounting Br...

Page 15: ...nder Securing Hearth Base to Floor page 16 If not securing hearth base to floor proceed to Mounting Heater to Optional Hearth Base page 16 INSTALLATION Placing Heater on Mounting Bracket 1 Install wall spacers 2 Attach two 2 rubber bumpers to back of heater as shown in Figure 10 3 Locate two 2 horizontal slots on back panel of heater 4 Place heater onto mounting bracket Slide horizontal slots onto...

Page 16: ...ons Included With Mantel Kit IMPORTANT Only use the optional mantels specified in this manual See Accessories pages 28 and 29 for proper mantel kits This heater is only approved for use with mantels designed for this heater Do not use these mantels with any other product Screw Brass Base Trim Mounting Heater to Optional Hearth Base 1 Lay heater on its back on a table with the bottom of heater over...

Page 17: ...t shutoff valve is for turning on or shutting off the gas to the appliance Figure 14 Gas Connection Pipe Coupling To Gas Log Set or to Gas Valve Shutoff Valve Gas Supply Inlet Pipe Locations that the Pressure Tapping Point May be Installed CONNECTING TO GAS SUPPLY This appliance requires a 3 8 NPT National Pipe Thread inlet connection to the pressure regulator WARNING A qualified service person mu...

Page 18: ...ne LP supply tank valve 3 Check all joints from propane LP supply tank to equipment shutoff valve see Figure 15 Apply mixture of liquid soap and water to gas joints Bubbles forming show a leak 4 Correct all leaks at once Pressure testing heater gas connections 1 Open equipment shutoff valve see Figure 15 2 Open propane LP supply tank valve 3 Make sure control knob of heater is in the OFF position ...

Page 19: ...reach your gas supplier call the fire 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 tech n...

Page 20: ...t pilot The pilot is attached to the front of burner If needed keep pressing ignitor button until pilot lights Note If pilot does not stay lit refer to Troubleshooting pages 32 through 25 Also contact a qualified service person or gas supplier for repairs Until repairs are made light pilot with match To light pilot with match see Match Lighting Instructions page 21 8 Keep control knob pressed in f...

Page 21: ... cycle back on when room temperature drops below the set temperature The control knob can be set to any heat level between HI and LO Note The thermostat sensing bulb measures the temperature of air near the heater cabinet This may not always agree with room temperature depending on housing construction installation location room size open air temperatures etc Frequent use of your heater will let y...

Page 22: ...nch above the log Note When using the heater the first time the flame will be opaque orange yellow for approximately one hour until the log cures Thermocouple for Natural Thermocouple for LP Figure 21 Correct Pilot Flame Pattern Thermocouple for Natural Figure 22 Incorrect Pilot Flame Pattern Pilot Burner Thermocouple for LP If yellow tipping occurs your heater could produce increased levels of ca...

Page 23: ...itor cable pinched or wet 5 Broken ignitor cable 6 Bad piezo ignitor 1 Gas supply turned off or equipment shutoff valve closed 2 Control knob not in PILOT position 3 Control knob not pressed in while in PILOT position 4 Air in gas lines when installed 5 Depleted gas supply 6 ODS pilot is clogged 7 Gas regulator setting is not correct 1 Control knob not fully pressed in 2 Control knob not pressed i...

Page 24: ...er orifice 1 Turn heater off when using furniture polish wax carpet cleaners or similar products POSSIBLE CAUSE 1 Burner orifice is clogged 2 Burner orifice diameter is too small 3 Inlet gas pressure is too low 1 Manifold pressure is too low 2 Burner orifice is clogged 1 Burner orifice is clogged or damaged 2 Burner damaged 3 Gas regulator defective 1 Not enough air 2 Gas regulator defective 1 Res...

Page 25: ...tilation 2 Contact local propane LP company 3 Clean ODS pilot see Cleaning and Main tenance page 26 1 Locate and correct all leaks see Checking Gas Connections page 18 2 Replace control valve 1 Take apart gas tubing and remove foreign matter 2 Locate and correct all leaks see Checking Gas Connections page 18 POSSIBLE CAUSE 1 Metal expanding while heating or con tracting while cooling 1 Heater burn...

Page 26: ...ed air in a can You can use a vacuum cleaner in the blow position If using compressed air in a can please follow the directions on the can If you don t follow directions on the can you could damage the pilot assembly 1 Shut off the unit including the pilot Allow the unit to cool for at least thirty minutes 2 Inspect burner pilot and primary air inlet holes on injec tor holder for dust and dirt see...

Page 27: ...DESCRIPTION QTY DHHNT DHHPT 1 Burner 1 49D0200 49D0200 2 Injector 1 49D0080 49D0081 3 ODS Pilot Valve Tube 3 16 1 49D0050 49D0050 4 ODS Pilot Assembly 1 26D2529 14D0476 5 T stat Control Valve 1 11V0701 11V0701 6 Pressure Valve Regulator 1 24D0305 24D0306 7 Piezo Wire 1 00K0632 00K0632 8 Burner Valve Tube 5 16 1 49D0071K 49D0071K 9 Piezo Ignitor 1 14D0503 14D0503 LOG SET 10 Front Log 1 49D0053 49D0...

Page 28: ...ers two 2 top and three 3 bottom HEARTH BASE HHB For locating heater on the floor Includes brass trim Complete installation instructions included CORNER SURROUNDS WITH HEARTH CSHHF O Oak wood with honey oak finish CSHHF DC Birch wood with dark cherry finish Complete assembly instructions included ...

Page 29: ...ides better heat distribution Makes heater more efficient Compete installation and operating instructions included WALL SURROUNDS WITH HEARTH WSHHF O Oak wood with honey oak finish WSHHF DC Birch wood with dark cherry finish Complete assembly instructions included ...

Page 30: ...30 49D0090 NOTES ...

Page 31: ...49D0090 31 NOTES ...

Page 32: ...taller in accordance with the installation instructions The Limited Lifetime 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 installer...

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