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Installation and Operation Instructions

Superior™ Unvented (Vent-Free) Gas Log Heater

P/N 126842-01   Rev. A   01/2014

Models

VS1824NM

VS1824PM

P126842-01

INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.

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.

WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built 

fireplace or in a listed ventless firebox enclosure. It is design-certified for these installations in accordance 

with ANSI Z21.11.2. Exception: DO NOT install this appliance in a factory-built fireplace that includes 

instructions stating it has not been tested or should not be used with unvented gas logs.

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 Air for Combustion and Ventilation 

section on page 6 of this manual.

 

WARNING: If the information in these instructions 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.

Summary of Contents for VS1824NM

Page 1: ...that includes instructions stating it has not been tested or should not be used with unvented gas logs This is an unvented gas fired heater It uses air oxygen from the room in which it is installed Pr...

Page 2: ...ING This is an unvented gas fired heat er It uses air oxygen from the room in which it is installed Provisions for adequate combustion and ventilation air must be provided Refer to Air for Combustion...

Page 3: ...G Do not use a blower insert heat exchanger insert or other accessory not approved for use with this heater SAFETY Continued WARNING Do not allow fans to blow directly into the fireplace Avoid any dra...

Page 4: ...fire department 5 This heater shall not be installed in a bedroom or bathroom unless installed as a vented appliance see Installing Damper Clamp Accessory for Vented Operation page 11 This gas log set...

Page 5: ...of vent free heaters Non thermostat models may also be operated as a vented decorative ANSI Z21 60 product by opening flue damper SAFETY PILOT This heater has a pilot with an Oxygen Deple tion Sensin...

Page 6: ...e whose volume is less than 50 cubic feet per 1 000 Btu per hour 4 8 m3 per kw of the ag AIR FOR COMBUSTION AND VENTILATION Continued gregate input rating of all appliances installed in that space and...

Page 7: ...Fuel Gas Code or applicable local codes VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space When ventilating to an adjoining unconfined sp...

Page 8: ...eplace If not drafting may cause pilot outage or sooting Use a heat resistant sealant Do not seal chimney flue damper INSTALLATION WARNING Never install the heater in a bedroom or bathroom unless inst...

Page 9: ...4 Minimum Clearance for Combustible to Wall Minimum 16 from Side Wall Example INSTALLATION Continued NOTICE Manual control heaters may be used as a vented product If so you must always run heater with...

Page 10: ...nd the top of the fireplace opening as shown in Figure 6 Determining Minimum Mantel Clearance When Using a Hood If minimum clearances in Figure 6 page 10 are not met you must have a hood When using a...

Page 11: ...vented mode 1 The fireplace does not meet the clear ance to combustibles requirements for vent free operation 2 State or local codes do not permit vent free operation 3 You prefer vented operation If...

Page 12: ...ealant resistant to propane LP gas not provided electric drill with 3 16 drill bit flathead screwdriver 1 Apply pipe joint sealant lightly to male threads of the fitting to be threaded into gas regula...

Page 13: ...incoming gas pressure You must reduce incoming gas pressure to between 11 and 14 of water If you do not reduce incoming gas pressure heater regulator damage could occur Install external regulator wit...

Page 14: ...Cap off open end of gas pipe where equip ment shutoff valve was connected 3 Pressurize supply piping system by either opening propane LP supply tank valve for propane LP gas or opening main gas valve...

Page 15: ...e log installation instructions in this manual Flames contact ing log will create soot MODELS LVS18 VO AND LVS24 VO It is very important to install these logs exactly as instructed Do not modify logs...

Page 16: ...er log as shown in Left Crossover Log Figure 19 Installing Left Crossover Log Figure 20 Installing Center Crossover Log Center Crossover Log Figure 21 Installing Left Crossover Log Right Crossover Log...

Page 17: ...FOR YOUR SAFETY READ BEFORE LIGHTING WARNING If you do not fol low these instructions exactly a fire or explosion may result causing property damage per sonal injury or loss of life A This appliance h...

Page 18: ...in for 30 sec onds after lighting pilot After 30 seconds release control knob Note If pilot goes out repeat steps 3 through 7 If control knob does not pop out when released contact a qualified servic...

Page 19: ...shut down If pilot flame pattern is incorrect as shown in Figure 25 turn heater off see To Turn Off Gas to Ap pliance page 19 see Troubleshooting page 22 Note The pilot flame on natural gas units will...

Page 20: ...ifice holder located at the end of the burner tube again Remove any large particles of dust dirt lint or pet hair with a soft cloth or vacuum cleaner nozzle Figure 26 Orifice Holder On Outlet Burner T...

Page 21: ...sition 4 Air in gas lines when in stalled 5 Depleted gas supply pro pane LP only 6 ODS pilot is clogged 7 Gas regulator setting is not correct OBSERVED PROBLEM When control knob is pressed in and turn...

Page 22: ...atural or propane LP gas company 1 Contact local natural or propane LP gas company 2 Clean burner see Cleaning and Maintenance page 20 or replace burner orifice 1 Clean burner see Cleaning and Mainten...

Page 23: ...perate burner until air is removed from line Have gas line checked by local natural or propane LP gas company 3 Observe minimum instal lation clearances see page 8 4 Clean burner see Cleaning and Main...

Page 24: ...leaks see Checking Gas Con nections page 14 1 Open window and or door for ventilation 2 Contact local natural or propane LP gas company 3 Clean ODS pilot see Cleaning and Maintenance page 20 1 Locate...

Page 25: ...www SuperiorFireplaces US com 126842 01A 25 PARTS VARIABLE MANUALLY CONTROLLED BURNER SYSTEMS VS1824NM AND VS1824PM 15 3 14 16 11 10 4 2 12 8 5 14 13 7 9 1 15 15...

Page 26: ...1 099415 24 Gas Regulator LP 1 8 122142 01 Manual Valve with Ignitor NG 1 122142 02 Manual Valve with Ignitor LP 1 9 122141 01 Manual Valve Outlet Tube 1 10 122146 02 Natural Gas Plate 1 11 107186 05...

Page 27: ...8 02 Rear Log 1 124519 02 Rear Log 1 3 124518 03 Left Crossover Log 1 124519 03 Left Crossover Log 1 4 124518 04 Center Crossover Log 1 124519 04 Center Crossover Log 1 5 124518 05 Right Crossover Log...

Page 28: ...s Pressure in of water Maximum 14 W C Minimum 11 W C Shipping Weight 27 lbs SERVICE HINTS When Gas Pressure Is Too Low pilot will not stay lit burners will have delayed ignition heater will not produc...

Page 29: ...HEARTH PRODUCTS at 1 800 655 2008 for informa tion You can also write to the address listed on the back page of this manual FLOOR MEDIA KIT FM100 For all models Includes lava rock burner embers and bu...

Page 30: ...ll produce excessive temperatures and could result in a fire hazard c damages caused by failing to provide proper maintenance and service in accordance with the instructions provided with the Product...

Page 31: ...IS WARRANTY Model located on product or identification tag ______________________________ Serial No located on product or identification tag ___________________________ Date Purchased ________________...

Page 32: ...126842 01 Rev A 01 14 1508 Elm Hill Pike Suite 108 Nashville TN 37210 1 800 655 2008 www IHP US com P126842 01...

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