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Heatilator  •  NNXT33-IFT, NNXT33L-IFT, NNXT36-IFT, NNXT36L-IFT Owner’s Manual  •  2628-981 Rev. D  •  1/21 

Service Parts

Beginning Manufacturing Date: Sept 2020 

Ending Manufacturing Date: Active

IMPORTANT: THIS IS DATED INFORMATION. Parts must be ordered from a dealer or distributor. 

Hearth and 

Home Technologies does not sell directly to consumers

. Provide model number and serial number when 

requesting service parts from your dealer or distributor.

Stocked 

at Depot

ITEM

DESCRIPTION

COMMENTS

PART NUMBER

14.1

Pilot Shield

2382-131

14.2

Pilot Assembly NG 

SRV2090-012

Y

Pilot Assembly Propane

2090-013

Y

14.3

Pilot Gasket

4021-042

14.4

Seal Plate Assembly

2382-584

14.5

Valve Bracket 

4055-205

14.6

Flex Ball Valve Assembly  

SRV302-320

Y

14.7

Valve NG 

SRV2166-302

Y

Valve Propane

2166-303

Y

14.8

Male Connector

Pkg of 5

303-315/5

Y

14.9

Transformer  

SRV2326-131

Y

14.10

Wire Harness, IFT 6 Pin

SRV2326-132

Y

14.11

Air Shutter Assembly

SRV4055-202

Y

14.12

Gasket, Bulkhead

4021-429

14.13

Bulkhead W/Flex Tube

4021-512

Y

17.1

Heat Sheild, Component

2628-110

17.2

Cable, B Type AC Module

SRV2326-152

Y

17.3

Module, IFT Control

SRV2326-130

Y

17.4

Module, RF FCC

SRV2326-120

Y

17.5

Module, B Type AC

SRV2326-150

Y

17.6

Battery Pack**

SRV2326-134

Y

17.7

Tray, Component

2532-170

Orifice NG (#39C)

NNXT33-IFT

582-839

Y

Orifice Propane (#1.55mm)

582-8155

Y

Orifice NG (#37C)

NNXT36-IFT

582-837

Y

Orifice Propane (#52C)

SRV582-852

Y

Conversion Kit NG

NGK-NNXT-IFT

Y

Conversion Kit Propane

LPK-NNXT-IFT

Y

Pilot Orifice NG

SRV593-528

Y

Pilot Orifice Propane

SRV593-527

Y

Regulator NG

NGK-DXV-50

Y

Regulator Propane

SRVLPK-DXV-50

Y

**Fuse for battery pack can be sourced locally, not a warranty item. Specs are 250v, 3A fuse, 3/4” long

#14 Valve Assembly

#17 Ignition Control Assembly

NNXT33-IFT, NNXT36-IFT

14.1

14.2

14.3

14.9

14.5

14.6

14.7

14.8

14.11

14.10

14.12

14.13

14.4

17.1

17.2

17.3 17.4 17.5

17.6

17.7

Summary of Contents for NNXT33-IFT

Page 1: ...neighbor s phone Follow the gas sup plier 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 WARNING FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury death or property damage Models NNXT33 IFT NNXT33L IFT NNXT36 IFT NNXT3...

Page 2: ...Pression xx x in w c Po Col D eau Maximum Manifold Pressure Pression x x in w c Po Col d eau Minimum Manifold Pressure Pression x x in w c Po Col d eau Minimum rate with variable regulator on control valve Total Electrical Requirements 120Vac 60Hz less than 12 Amperes MADE IN USA USA CANADA ALTITUDE 0 2000 FT 0 4500 FT MAX INPUT BTU h xx xxxx xx xxx MIN INPUT BTU h xx xxx xx xxx ORIFICE SIZE xx DM...

Page 3: ...fetime Warranty 4 2 Product Specific Information A Appliance Certification 6 B Glass Specifications 6 C BTU Specifications 6 3 Important Safety and Operating Information A Appliance Safety 7 B General Operating Parts 8 C Fuel Specifications 8 D Wall and Mantel Temperatures 8 E Wall Surface TV Guidelines 8 F Before Lighting Appliance 10 G Lighting Instructions IPI 11 H Appliance Break In 12 I Heat ...

Page 4: ...pendent authorized HHT dealer or distributor whichever occurs earlier However the Warranty coverage shall commence no later than 24 months following the date of Product shipment from HHT regardless of the installation or occupancy date The term Lifetime in the table below is defined as 20 years from the beginning date of warranty coverage for gas appliances and 10 years from the beginning date of ...

Page 5: ...andling devices such as exhaust fans or forced air furnaces or other such causes 6 use of fuels other than those specified in the operation instructions 7 installation or use of components not supplied with the applicable Product or any other components not expressly authorized and approved by HHT 8 modification of the appliance not expressly authorized and approved by HHT in writing and or 9 inte...

Page 6: ...our dealer for replacement glass This product is listed to ANSI standards for Vented Gas Fireplace Heaters and applicable sections of Gas Burn ing Heating Appliances for Manufactured Homes and Recreational Vehicles and Gas Fired Appliances for Use at High Altitudes Also certified for installation in a bedroom or bedsitting room C BTU Specifications Models U S or Canada Maximum Input BTU h Minimum ...

Page 7: ...s High temperatures may ignite clothing or other flammable materials Clothing furniture draperies and other flammable materials must not be placed on or near the appliance WARNING This product and the fuels used to operate this product liquid propane or natural gas and the products of combustion of such fuels can expose you to chemicals including benzene which is known to the State of California t...

Page 8: ...NOT REQUIRED CLEAR SPACE SECTION 3 A FAN SECTION 6 A CONTROL CAVITY SECTION 3 I NOTICE Surface temperatures listed above are taken with a temperature measuring probe as prescribed by the test standard used for appliance certification Temperatures on walls or mantels taken with an infrared thermometer may yield increased temperatures of up to 30 F 17 C or more depending on the thermometer settings ...

Page 9: ...and from model to model actual TV temperatures should be validated at the time of each installation TVs should not be used in situations where the actual TV temperature exceeds the manufacturers maximum allowable operating temperatures identified in the TV s technical specifications Contact the TV s manufacturer directly if you cannot locate this information or have questions regarding the informati...

Page 10: ...shipping materials have been removed from inside and or underneath the firebox Review proper placement of logs ember material and or other decorative materials Check the wiring Check the air shutter adjustment Ensure that there are no gas leaks Ensure that the glass is sealed and in the proper position and that the integral barrier is in place WARNING Risk of Fire or Asphyxiation DO NOT op erate f...

Page 11: ...plier s instructions If you cannot 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 DO NOT 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 has been under water Immediately c...

Page 12: ... smoke and odors Smoke detectors may activate Optional Heat Zone Gas Kit The Heat Zone Gas heat management option is avail able for use with the NNXT IFT appliances and must be used in conjunction with the IFT RC400 remote control The Heat Zone Kit draws heat from your fireplace to an adjacent room in your home up to 20 feet away Optional Heat Out Gas Kit The Heat Out Gas heat management option is...

Page 13: ...rier front and front refractory may need to be removed 2 Locate the battery tray and insert four AA cell batteries Battery polarity must be correct or module damage will occur See Figure 3 5 A complete wiring diagram is included in the Electrical section of the appliance Installation Manual 3 Turn the appliance on according to the instructions below for the appropriate type of control Wall Switch ...

Page 14: ...o the OFF position while the appliance is operating the system will shut down ON Position The appliance will ignite and run continuously at the HI flame setting No adjustment in flame height is possible Remote Position The remote position allows operation of the appliance from a wired wall switch IFT RC400 or IFT RC150 remote controls The IFT ECM switch must be in this position to pair the IFT ECM...

Page 15: ... corrected If the IFT ECM re enters the lock out condition after these steps call your dealer for service Fan ON OFF The fan may be turned on and off and the speed adjusted by the remote control that comes standard with the fire place Consult the instructions included with the appli ance remote control for more information Appliance ON OFF Use the factory installed IntelliFire Touch RC400 Remote C...

Page 16: ...hall be turned off and cooled before servicing When properly maintained your fireplace will give you many years of trouble free service Contact your dealer to answer questions regarding proper operation trouble shooting and service for your appliance Visit www heati lator com to locate a dealer We recommend annual ser vice by a qualified service technician IMPORTANT Any safety screen decorative ba...

Page 17: ...vent unin tended operation Remove batteries from remote controls Unplug the 6 volt adapter plug Clean glass with a non abrasive non ammonia based commercially available gas fireplace glass cleaner Light deposits Use a soft cloth with soap and water Heavy deposits Use commercial fireplace glass cleaner consult with your dealer Carefully set fixed glass assembly in place on fireplace Hold glass in p...

Page 18: ...avoided Remove all foreign objects Verify unobstructed air circulation Figure 4 2 IPI Pilot Flame Pattern Pilot and Burner Ignition and Operation Frequency Annually By Qualified Service Technician Tools needed Protective gloves vacuum cleaner whisk broom flashlight voltmeter indexed drill bit set and a manometer Inspect orifice for soot dirt and corrosion Verify orifice size is correct See Service...

Page 19: ... hours This is caused by the curing of the paint and the burning off of any oils remaining from manufacturing Odor may also be released from finishing materials and adhesives used around the fireplace These circumstances may require additional curing related to the installation environment Film on the glass This is a normal result of the curing process of the paint and logs Glass should be cleaned...

Page 20: ...fference between the desired room temperature and actual temperature In thermostat mode the hearth appliance will start in HI flame but as the actual temperature approaches the desired set temperature on the remote the flame intensity will automatically decrease Au tomatic flame modulation will result in more control of the tem perature and will cause the appliance to cycle OFF ON less The applian...

Page 21: ... IFT ECM slider switch is in ON or REM position Verify AC power available to junction box Verify AC DC adaptor is plugged into junction box and ECM Verify AC DC adaptor out put voltage is between 5 7 6 3 Vdc If battery pack is used check battery pack voltage is 4 2 V if not replace batteries Shorted or loose connection in system wiring or wiring harness Verify system wiring configuration Remove an...

Page 22: ...ted to green main valve solenoid Check main valve solenoid resistance nominal is 60 ohms If open or shorted replace valve Verify valve inlet pressure is correct for gas type Pilot and main do not light ECM goes into 5 Red 1 Green Lockout Power Vent PV Failure Power Vent blower defective check wiring to IFT ACM check if blower is working Check if PV pressure switch is connected to brown and black w...

Page 23: ...ies if the barrier is not present or help is needed to properly install one For more information refer to the instructions supplied with your decorative barrier door or front Heat Management Systems The optional heat management systems compatible with this product are discussed in Section 3 I After a qualified service technician has installed the heat management system follow the instruction suppl...

Page 24: ...al 2628 981 Rev D 1 21 Service Parts Beginning Manufacturing Date Sept 2020 Ending Manufacturing Date Active Part number list on following page Log Set Assembly 08 20 NNXT33 IFT NNXT36 IFT 8 9 10 11 12 13 14 15 17 19 18 20 21 22 25 7 16 26 23 24 4 5 1 2 3 6 B Service Parts ...

Page 25: ...0 Non Combustible Board 4055 894 11 Glass Baffle 2384 109 12 Hearth Pan 2384 111 13 Burner Assembly NG Propane 2384 007 Y 14 Valve Assembly NG Refer to valve page 15 Gasket Valve Plate Qty 2 req 4055 135 16 Glass Frame Assembly GLA2384 018 Y 17 Ignition Control Assembly Refer to valve page 18 Glass Retainer Qty 2 req 060 235 25 19 Glass Latch Assembly Qty 4 req 2382 400 Y 20 Junction Box SRV2326 0...

Page 26: ...0 Non Combustible Board 4055 895 11 Glass Baffle 2385 109 12 Hearth Pan 2385 111 13 Burner Assembly NG Propane 2385 007 Y 14 Valve Assembly NG Refer to valve page 15 Gasket Valve Plate Qty 2 req 4055 135 16 Glass Frame Assembly GLA2385 018 Y 17 Ignition Control Assembly Refer to valve page 18 Glass Retainer Qty 2 req 060 235 25 19 Glass Latch Assembly Qty 4 req 2382 400 Y 20 Junction Box SRV2326 0...

Page 27: ...former SRV2326 131 Y 14 10 Wire Harness IFT 6 Pin SRV2326 132 Y 14 11 Air Shutter Assembly SRV4055 202 Y 14 12 Gasket Bulkhead 4021 429 14 13 Bulkhead W Flex Tube 4021 512 Y 17 1 Heat Sheild Component 2628 110 17 2 Cable B Type AC Module SRV2326 152 Y 17 3 Module IFT Control SRV2326 130 Y 17 4 Module RF FCC SRV2326 120 Y 17 5 Module B Type AC SRV2326 150 Y 17 6 Battery Pack SRV2326 134 Y 17 7 Tray...

Page 28: ...___________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ...

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