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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.

20308636  0516  Rev. 1

INSTALLER: Leave this manual with the appliance.

CONSUMER: Retain this manual for future reference.

•  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.

  – Leave the building immediately.

  – 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.

  WARNING! 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.

AVFLST Vent Free See Through

 

Fireplace System

 

Installation & Operating Instructions

Models: 

AVFLST42NTSC and AVFLST42PTSC

Summary of Contents for AVFLST42NTSC

Page 1: ...ght any appliance Do not touch any electrical switch do not use any phone in your building Leave the building immediately Immediately call your gas supplier from a neighbor s phone Follow the gas supp...

Page 2: ...ncombustible facing installation 10 Connect the gas 11 Check gas pressure 12 Gas pressures 12 ELECTRICAL INSTALLATION 13 Wiring junction box 13 FINAL INSTALLATION 15 Installation of air deflection gla...

Page 3: ...rviced as it may not be operating properly 10 The installation must conform with local codes or in the absence of local codes with the National Fuel Gas Code ANSI Z223 l NFPA54 11 This unit complies w...

Page 4: ...g 3 5 kPa 23 The appliance must be isolated from 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...

Page 5: ...FUEL MAX INPUT BTU h MIN INPUT BTU h ORIFICE SIZE AVFLST42NTSC NAT 37 000 24 500 2 20 mm AVFLST42PTSC LP 36 000 28 500 55 GAS PRESSURES NATURAL PROPANE LP Inlet Minimum 5 0 w c 11 0 w c Inlet Maximum...

Page 6: ...nimum Rough Framing Height 32 813mm Minimum rough opening depth for 5 8 wall thickness 12 305mm Interior wall installation Exterior wall installation Minimum Rough Framing Width 44 1118mm 44 1118mm Wa...

Page 7: ...removed from under the unit 2 Install following the instructions found in this manual 3 Field wire main power supply to junction box Refer to the Electrical Installation section page 13 Electrical co...

Page 8: ...indow or other combustibles Refer to Clearance and Height Requirements section on Page 9 Minimum clearances to combustibles must be maintained Location must not be affected by drafts caused by kitchen...

Page 9: ...instructions carefully to ensure safe installation Failure to follow instructions exactly can create a fire hazard Floor Clearance The fireplace may be installed directly on a combustible floor or a...

Page 10: ...materials which do not protrude beyond the face NONCOMBUSTIBLE FACING INSTALLATION CAUTION The noncombustible wall board supplied with this unit can be damaged if dropped or struck Handle with care 1...

Page 11: ...T Loosen the pipe adapter on the flex tube before installing to the system piping Always use an external regulator for all propane LPG heat ers only to reduce the supply tank pressure to a maximum of...

Page 12: ...and then place tubing to pressure gauge over test point Use test point A closest to gas inlet If the pressure is not within the range listed for your gas type turn the valve reg ulator until it is wi...

Page 13: ...ld only be performed by a qualified licensed electrician Main power supply must be turned off before connecting to the main electrical power supply or performing service WARNING Electrical Grounding I...

Page 14: ...lve Black Yellow Thermocouple Pilot Thermocouple Module Orange Red Plug in Connector A A C MODULE TO JUNCTION BOX IN FIREPLACE PLUG IN CONNECTOR A WHITE BLACK GREEN WHITE BLACK Opt Blower Hearth Light...

Page 15: ...er needs to burn cleanly This may cause sooting 1 Spread fireglass evenly in one layer over the entire floor and burner It is important to not have the fireglass too thick on ported area single layer...

Page 16: ...supplier s instructions If you cannot reach your gas supplier call the fire department C Use only your finger to push in the master switch Never use tools If the switch will not function by hand do no...

Page 17: ...ep once This indicates the system is ready 5 Press ON button Sparker will spark and pilot flame will light 6 Once pilot flame is established the main burner flame will light automatically 7 If the pil...

Page 18: ...and pull out to remove battery door 2 Install the batteries as indicated on Command Center 3 Close battery door by snapping in place 4 When the four 4 batteries are installed the system will operate...

Page 19: ...er is on holding the OFF button on the Command Center while turning on the master switch will activate the learn function for the transmitter 3 After the above operation two beeps will be given and th...

Page 20: ...mmands of OFF are Memory Off the system will remember all last settings before turning off The next time the fireplace is turned on all settings will resume To reset change to the desired settings and...

Page 21: ...tment arrows The blue LED backlight lights up for 8 seconds when any of the touch buttons is pressed The menus include TIMER THERMO LIGHT and AUX The adjustment arrows include ON up and OFF down Their...

Page 22: ...tory In the event of activation or interference from other nearby transmissions change the code using the following procedures learn function must be performed af ter changing the code 1 Press the ON...

Page 23: ...ld the TIMER button for 3 seconds or b Use the OFF down buttons to decrease the Set Time to zero or c Slide down on the arrow buttons to exit TIMER mode and shut off the fireplace Thermostat Mode Figu...

Page 24: ...n but tons become flame height controller again 5 When the light button is flashing slide up and down on the arrow buttons will turn the light brightness to HIGH or Off directly without pressing the l...

Page 25: ...hen the ambient temperature is less than 40 de grees Fahrenheit the LCD will display LO and NO SIGNAL will be sent to turn on the appliance All functions still remain the same for both Manual Mode and...

Page 26: ...tteries should be changed every six 6 months Appliance does not come on The transmitter did not sync with the receiver Make sure the transmitter has synced to the receiver There will be two audible be...

Page 27: ...d Lo and Off and cycles through the color selection Color selection options Using the color slection button you can choose from ten 10 different lighting options 1 Color fade This selection will cycle...

Page 28: ...r intake holes Remove lint or particles with vacuum brush or pipe cleaners Failure to keep air intake holes clean will result in sooting and poor combustion Inspect and clean all burner ports Inspect...

Page 29: ...ED control assembly in place See Figure 36 Turn flat and pull forward 5 Remove the two black LED connectors 6 From inside unit start at one end of the strip and begin to peel from base 7 Repeat with s...

Page 30: ...patterns Sooting and improper burning will result During manufacturing fabricating and shipping various components of this appliance are treated with certain oils films or bonding agents These chemic...

Page 31: ...with ON OFF switches off Gas odor even when control knob is in OFF position Gas leak Locate and correct all leaks Control valve defective Replace control valve Burner does not light after ODS pilot i...

Page 32: ...onnected to the appliance Ensure that both the 3V IPI control module power supply as well as the LED power supply are securely plugged into the appliance junction box Faulty wiring Check appliance for...

Page 33: ...heck gas supply Go through Battery polarity wrong LED on the Command Center does not show solid green The 5 pin connector on the AC board broken or bent AC plug is plugged to AC mains Battery voltage...

Page 34: ...e 6 2 20303043K Medium Dark Gray Stone 7 2 20303044K Medium Tan Stone 8 2 74D0718K Small Tan Stone 9 1 78D0141K Small Dark Gray Stone 10 2 74D0717K FIREBOX ITEM DESCRIPTION QTY PART NO 1 Bulb Top Ligh...

Page 35: ...14D0473 14D0473 5 Pilot Regulator not shown 1 14D0469 6 Control Box 1 80D0018 80D0019 7 Command Center 1 80D0005 80D0005 8 Injector 2 20305649 62D3005 9 Venturi 2 45D0600 20305775K 10 Flexhose w Shut...

Page 36: ...time 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 dam...

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Page 40: ...149 Cleveland Drive Paris Kentucky 40361 www monessenhearth com...

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