Desa MVO18VNA, MVO18VPA Installing Appliance, Connecting to GAS Supply, Installation Items Needed

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INSTALLATION

Continued

INSTALLING APPLIANCE

WARNING: Special care is required if you are installing the unit into a sunken fireplace. You must raise the fireplace floor to allow access to gas log controls. This will insure adequate air flow and guard against sooting. Raise the fireplace floor using noncombustible material.

CAUTION: Do not pick up ap- pliance assembly by logs. This could damage unit. Only handle assembly by grate.

IMPORTANT: Make sure appliance is level. If unit is not level it will not work properly.

Center the appliance in the fireplace. Make certain the grate front feet sit inside the front edge of the fireplace and that there is adequate clearance around the appliance for access and operation.

Note: The installation of appliances designed for manufactured home (U.S. only) or mobile home installation must conform with the standard CAN/ CSA Z240, Mobile Housing, in Canada, or with the Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280, in the United States, or when such a standard is not applicable, ANSI/NCSBCSA225.1/NFPA501A, Manufactured Home Installations Standard.

CONNECTING TO GAS SUPPLY

WARNING:Aqualifiedservice personmustconnectheatertogas supply. Follow all local codes.

WARNING: This appliance requiresa3/8"NPT(NationalPipe Thread) inlet connection to the control valve.

CAUTION: Never connect propane/LP unit directly to the propane/LP supply. This unit re- quires an external regulator (not supplied). Install the external regulator between the unit and the propane/LP supply.

WARNING:Neverconnectnatu- ralgasfireplacetoprivate(non-util- ity)gaswells.Thisgasiscommonly known as wellhead gas.

Installation Items Needed

Before installing heater, make sure you have the items listed below.

•approved flexible gas hose and fittings (supplied with appliance -if allowed by local codes)

•external regulator (propane/LP models only)

•piping (check local codes)

•sealant (resistant to propane/LP gas)

•equipment shutoff valve*

•test gauge connection*

•sediment trap

•tee joint

•pipe wrench

*A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 17.

For propane/LP units, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pres- sure, control valve damage could occur. Install external regulator with the vent pointing down as shown in Figure 6. Pointing the vent down protects it from freezing rain or sleet.

Propane/LP

External

Supply Tank

Regulator

Vent

 

Pointing

 

Down

 

Figure 6 - External Regulator with Vent

 

Pointing Down

114924-01B

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Contents MVO24VNA, MVO24VPA MVO18VNA and MVO18VPA What to do if YOU Smell GASTable of Contents Safety Information High traffic areas Windy or drafty areas Local CodesProvide adequate clearances around air openings Product Identification Product FeaturesInstallation Remove log set assembly from cartonInstallation Installation and ClearancesFlue Opening Specifications Venting Specifications forConnecting to GAS Supply Installing ApplianceInstallation Items Needed Test Pressures In Excess Of 1/2 Psig Checking GAS ConnectionsNatural Propane/LPPressure Testing Appliance Gas Connections Placement of Loose EmbersTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Operating Appliance For Your Safety Read Before LightingLighting Instructions Optional HAND-HELD Remote Operation Wiring DiagramWhen Using Remote To Turn OFF GAS To ApplianceCheck pilot flame pattern and burner flame pat- terns often Cleaning MaintenanceInspecting Burners Pilot Flame PatternObserved Problem Possible Cause Remedy TroubleshootingReplace burner orifice Contact local natural orPilot is lit Burner orifices clogged Propane/LP gas company Replace burner orificesCold Minute Air is gas line Operate burners until air is Burners are lit Position when burners areOperation Processes and log curing Hours of operation Turn control knob to LOStatement at top Gas leak. See WarningGas leak. See Warning statement at top Replacement Parts Service HintsTechnical Service AccessoriesMVO24VNA, MVO24VPA MVO18VNA, MVO18VPA Illustrated Parts BreakdownParts List Keep this Warranty Warranty InformationLimited Warranty Vented GAS LOG Appliances

MVO24VPA, MVO18VNA, MVO18VPA, MVO24VNA specifications

Desa MVO18VPA, MVO24VPA, MVO18VNA, and MVO24VNA represent a line of versatile and efficient heating solutions designed for various residential and commercial applications. These models are tailored to meet diverse user requirements while providing exceptional value through advanced technologies and features.

At the core of the Desa line is the commitment to energy efficiency. The MVO series incorporates high-efficiency motors and advanced heat exchange systems that ensure optimal performance while minimizing energy consumption. This not only leads to cost savings on utility bills but also reflects a commitment to sustainability, making these models an excellent choice for eco-conscious consumers.

In terms of heating capacity, the MVO18 models offer a robust output suitable for medium-sized spaces, while the MVO24 models are designed for larger areas, providing flexibility for different applications. The ability to adjust heating levels allows users to customize their environment according to their specific needs, enhancing comfort.

The MVO series is equipped with innovative technologies that ensure consistent performance. The integration of intelligent temperature controls provides precise management of heating levels, enabling users to maintain their desired comfort without unnecessary energy expenditure. Additionally, these models feature durable construction materials that ensure longevity and reliable operation over time.

User convenience is a significant consideration in the design of the MVO series. Remote control functionality allows users to effortlessly adjust settings from a distance, adding a layer of convenience for those with busy lifestyles. Furthermore, some models are equipped with programmable timers, enabling users to set specific heating schedules that align with their daily routines.

Safety is paramount in the design of the Desa MVO series. These models come with multiple safety features, including overheat protection and automatic shut-off mechanisms, ensuring peace of mind for users.

In summary, the Desa MVO18VPA, MVO24VPA, MVO18VNA, and MVO24VNA heating models stand out for their energy efficiency, advanced heating technologies, and user-friendly features. Their adaptability makes them suitable for a range of environments, catering to the diverse needs of homeowners and businesses alike. With a focus on safety and reliability, the Desa MVO series represents an excellent investment for those seeking effective heating solutions.
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