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AVFLST Vent Free Fireplace

Monessen  •  AVFLST42 Installation Instructions  • 4118-900 Rev. B  •  05/2020

IntelliFire™ Plus ODS

About ON Mode

•  All functions can be accessed when the remote control 

is in the ON mode.

•  Only active functions will be displayed when the remote 

control is in the ON mode. 

About OFF Mode

Only the following functions can be accessed in the OFF 

mode:
•  AUX1
•  AUX2-Top Dome Light
Only active functions will be displayed when the remote 

control is in the OFF mode.

Turning On the Fireplace

•  Press the POWER button to turn the fireplace ON.  The 

fireplace will first ignite the pilot. Once the pilot flame is 

established the main burner will be lit.  

NOTICE: 

Whenever the fireplace is cycled from OFF to 

ON, the main burner will light on high for 10 seconds before 

returning to the previous user setting.

Adjusting Flame Height

•  Press the 

MENU

 button to activate the menu.

•  Using the 

UP

 and 

DOWN

 arrows highlight the 

FLAME

 

icon and press 

SELECT

.

•  Use the 

UP

 and 

DOWN

 arrows to adjust the 

FLAME

 

HEIGHT

, then press 

SELECT

.  The 

FLAME HEIGHT

 

can be adjusted to 5 different settings.

NOTICE: 

FLAME HEIGHT will not be adjustable for first 

ten seconds when fireplace is turned on.  

NOTICE: 

The system will remember the previous FLAME 

HEIGHT setting and will automatically adjust after 10 

seconds.

NOTICE:  

Some models use fixed valves, which cannot 

be adjusted.

AUX2 Function (Top Dome Light)

•  Press the 

MENU

 button to activate the menu.

•  Using the 

UP

 and 

DOWN

 arrows highlight the 

AUX1

 icon 

and press 

SELECT

.

•  Use the 

UP

 and 

DOWN

 arrows to adjust the 

AUX1 

output, 

then press 

SELECT

. The 

AUX1 

function

 

can be adjusted 

to 4 different settings: HI, MED, LOW and OFF.

Adjusting Thermostat

•  Press the 

MENU

 button to activate the menu.

•  Using the 

UP

 and 

DOWN

 arrows highlight the 

THERMO

 

icon and press 

SELECT

.

•  Use the 

UP

 and 

DOWN

 arrows to turn the 

THERMO

 

ON

 

or 

OFF

, then press 

SELECT 

(the 

SET TEMP

 will start 

blinking).  Using the 

UP

 and 

DOWN

 arrows select the 

desired temperature and press 

SELECT

.

NOTICE: 

If the THERMO function is on, the SET TEMP 

can be adjusted at any time by pressing the UP and DOWN 

arrows.

NOTICE: 

As the ROOM TEMP (RT) approaches SET 

TEMP (ST), the remote system will automatically adjust 

the flame height.  If the RT rises above ST, the fireplace 

will shut down the main burner.  After this, the fireplace will 

turn back on after the RT drops below the ST.

NOTICE:  

The system requires a two degree Fahrenheit 

or higher temperature difference between RT and ST for 

the fireplace to turn on.

NOTICE: 

The system will remember the previous TEM-

PERATURE setting when THERMOSTAT mode is cycled 

ON or OFF.

NOTICE: 

If your installation includes an optional wired 

ON/OFF wall switch, it should be in the OFF position when 

using the RC300 in thermostat mode.

Adjusting Timer

•  Press the 

MENU

 button to activate the menu.

•  Using the 

UP

 and 

DOWN

 arrows highlight the 

TIMER

 

icon and press 

SELECT

.

•  Use the 

UP

 and 

DOWN

 arrows to turn the 

TIMER

 

ON

 

or 

OFF

, then press 

SELECT

.  Using the 

UP

 and 

DOWN

 

arrows select the desired set time and press 

SELECT

Timer operates in increments of 15, 30, 45, 60, 90, 120 

and 180 minutes.

Setting the Child Lock

•  Press and hold the 

MENU

 and 

UP

 arrow buttons simul-

taneously for 4 seconds to enable or disable the child 

lock feature.

NOTICE: 

No functions will be usable until child lock feature 

is disabled.

Summary of Contents for AVFLST Series

Page 1: ...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 g...

Page 2: ...cation 9 Clearances and height requirements 10 FIREPLACE INSTALLATION 12 Secure fireplace to framing 12 Finishing material 12 Noncombustible facing installation 12 Connect the gas 13 Check gas pressur...

Page 3: ...pliance until the installation is complete This standard work checklist is to be used by the installer in conjunction with not instead of the instructions contained in this installation manual WARNING...

Page 4: ...sh air immediately Have the heater serviced 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...

Page 5: ...ure testing of the gas supply piping system at test pressures equal to or less than 1 2 psig 3 5 kPa 24 Do not use this room heater if any part has been under water Immediately call a qualified servic...

Page 6: ...RIFICE SIZE AVFLST42 CONTROLS MODEL FUEL MAX INPUT BTU h MIN INPUT BTU h ORIFICE SIZE AVFLST42NIP NAT 37 000 24 500 2 20 mm AVFLST42PIP LP 36 000 28 500 55 GAS PRESSURES NATURAL PROPANE LP Inlet Minim...

Page 7: ...305mm Interior wall installation Exterior wall installation Minimum Rough Framing Width 44 1118mm 44 1118mm Wall cover thickness Wall cover thickness Minimum rough opening depth for 5 8 wall thicknes...

Page 8: ...rd packing material has been 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 s...

Page 9: ...wall ceiling woodwork and window or other combustibles Refer to Clearance and Height Requirements section on Page 10 Minimum clear ances to combustibles must be maintained Location must not be affecte...

Page 10: ...ilure to follow instructions exactly can create a fire hazard Floor Clearance The fireplace may be installed directly on a combustible floor or a raised platform of an appropriate height Do not place...

Page 11: ...installa on TVs should not be used in situa ons where the actual TV temperature exceeds the manufacturers maximum allowable opera ng temperatures iden ed in the TV s technical speci ca ons Contact the...

Page 12: ...orm constructed of combustible materials which do not protrude beyond the face NONCOMBUSTIBLEFACINGINSTALLATION CAUTION The noncombustible wall board supplied with this unit can be damaged if dropped...

Page 13: ...vent the appliance from operating reliably Figure 10 IMPORTANT Loosen the pipe adapter on the flex tube before installing to the system piping Always use an external regulator for all propane LPG heat...

Page 14: ...urn captured screw counterclockwise two or three turns 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...

Page 15: ...ighten the screws 4 Make all necessary wire connections and reattach the cover plate to the outer shell WARNING Electrical connections should only be performed by a qualified licensed electrician Main...

Page 16: ...out Refer to Figure 13 and 14 IFP ODS Wiring Diagram This appliance is equipped with an Intellifire Plus control valve which operates on a 6 volt 1 5AMP system Plug the 6 volt transformer plug into t...

Page 17: ...LED STRIP LED STRIP TRANSFORMER CONTROL MODULE TOP BUTTON ON HI MED LO OFF BOTTOM BUTTON Color Selection RED BLUE YELLOW GREEN RED BLACK BLACK BLACK BLACK GREEN Use Y cord supplied in install bag to p...

Page 18: ...proper amount of air the burner 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...

Page 19: ...ted on the top of this label If you do not smell gas go to next step 3 To light the burner Equipped with wall switch Turn ON OFF switch to ON Equipped with remote or wall control Press ON or FLAME but...

Page 20: ...ee Figure 18 for location Lift the barrier screen off of the appliance 2 Locate the battery tray and insert four AA cell batteries See Figure 18 Battery polarity must be correct or module damage will...

Page 21: ...t in a separate room The remote control must be placed within 30 feet 9 14 m of the fireplace but should not be exposed to extreme heat The RC300 is approved for interior installation and should not b...

Page 22: ...ne remote control two 6 screws two wall anchors 3 AAA batteries and one AUX300 module If batteries are properly installed the remote will turn on 1 Remove remote control components from packaging 2 Re...

Page 23: ...nk green for 10 seconds While the LED is blinking press the POWER button on the remote control A double beep will come out of the control module to indicate that it has been programmed successfully NO...

Page 24: ...ill not be displayed when the remote status is OFF Use the SELECT button to select the current feature Use the UP and DOWN arrows to toggle through the menu functions and value selec tions in the subm...

Page 25: ...then press SELECT The AUX1 function can be adjusted to 4 different settings HI MED LOW and OFF Adjusting Thermostat Press the MENU button to activate the menu Using the UP and DOWN arrows highlight t...

Page 26: ...Use care and wear gloves when opening the front and accessing compo nents inside the fireplace Check remote screen for battery level indicator replace the batteries if low battery is indicated See Fi...

Page 27: ...as safety feature that automatically shuts down the fireplace after 9 hours of continuous operation without receiving a command from the RC300 remote 4 If you intend to use both an optional wired wall...

Page 28: ...full rate after 15 minutes the flames should appear as shown in Figure 22 FLAME APPEARANCE LED CONTROL LED CONTROL Multi colored LED lights Two buttons turn LEDs On Hi Med Lo and Off and cycles throu...

Page 29: ...w Inspect and clean burner air 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 cl...

Page 30: ...base 4 Remove two screws holding LED control assembly in place See Figure 26 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...

Page 31: ...certain oils films or bonding agents These chemicals are not harm ful but may produce annoying smoke and smells as they are burned off during the initial operation of the appliance possibly causing he...

Page 32: ...small Inlet gas pressure is too low Inlet gas pressure is too low Burner backfires during combustion Manifold gas pressure is too low Contact local gas company Burner orifice is clogged Clean burner...

Page 33: ...rify that AC power has been connected to the appliance Ensure that both the 6V IPI control module power supply as well as the LED power supply are securely plugged into the appliance junction box Faul...

Page 34: ...voltage of transformer at connection to module Acceptable read ings of a good transformer are between 6 4 and 6 6 volts DC Bat tery power supply voltage must be at least 4 volts If less than 4 volts r...

Page 35: ...se Verify connection from flame sensing rod to white sensor wire Polish flame sens ing rod with fine steel wool to remove any contaminants that may have accumulated on flame sensing rod Verify continu...

Page 36: ...Bulb Socket SRV73D4521 3 Porcelain Panel Qty 2 req 20308284 4 Engine Assembly NG SRV4118 015 Propane SRV4118 016 5 Deflection Glass Qty 2 req SRV20305432 Y 6 Support Glass Painted Qty 4 req 20306020K...

Page 37: ...454K Tube Tee to Injector 78D0090K Y Pilot Tube SRV20304115 Y Pilot Regulator NG Only SRV14D0469 Y Injector Qty 2 req NG 20305649 Propane SRV62D3005 Y 4 2 Burner Assembly NG SRV4118 013 Y Propane SRV4...

Page 38: ...ibutor whichever occurs earlier However the warranty shall commence no later than 24 months following the date of product shipment from HHT regardless of the installation or occupancy date The warrant...

Page 39: ...des 3 shipping or improper handling 4 improper operation abuse misuse continued operation with damaged corroded or failed components accident or improperly incorrectly performed repairs 5 environmenta...

Page 40: ...Monessen a brand of Hearth Home Technologies 7571 215th Street West Lakeville MN 50044 www monessenhearth com...

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