Desa SBJ18VPA, SMA18VPA, SBJ24VNA, SMA24VNA Ventilation AIR, Ventilation Air From Inside Building

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AIR FOR COMBUSTION

AND VENTILATION

Continued

1.Determine the volume of the space (length x width x height).

Length x Width x Height =________ cu. ft. (volume of space)

Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)

If additional ventilation to adjoining room is sup- plied with grills or openings, add the volume of these rooms to the total volume of the space.

2.Multiply the space volume by 20 to determine the maximum Btu/Hr the space can support.

____________(volume of space) x 20 = (Maximum Btu/Hr the space can support)

Example: 2560 cu. ft. (volume of space) x 20 = 51,200 (maximum Btu/Hr the space can support)

3.Add the Btu/Hr of all fuel burning appliances in the space.

Vent-free appliance

_________Btu/Hr

Gas water appliance*

_________Btu/Hr

Gas furnace

_________Btu/Hr

Vented gas appliance

_________Btu/Hr

Gas fireplace logs

_________Btu/Hr

Other gas appliances*

+_________Btu/Hr

Total

=_________Btu/Hr

*Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.

Example:

40,000

Gas water appliance

_________Btu/Hr

Vent-free appliance

33,000

+_________Btu/Hr

Total

73,000

=_________Btu/Hr

4.Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.

___________ Btu/Hr (maximum the space can support)

____________Btu/Hr (actual amount of Btu/Hr used)

Example: 51,200 Btu/Hr (maximum the space can support)

73,000 Btu/Hr (actual amount of Btu/Hr used)

The space in the previous example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support. You must provide additional fresh air. Your options are as follows:

A.Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air From Inside Building.

B.Vent room directly to the outdoors. See Ven- tilation Air From Outdoors, page 8.

C.Install a lower Btu/Hr appliance, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation.

WARNING:Iftheareainwhich the appliance may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1/NFPA54 Section 5.3 or applicable local codes.

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining un- confined space. When ventilating to an adjoining unconfined space, you must provide two perma- nent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 2 on page 8). You can also remove door into adjoining room (see option 3, Figure 2). Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for re- quired size of ventilation grills or ducts.

114744-01B

www.desatech.com

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Contents SMA24VNA, SMA24VPA SBJ24VNA, SBJ24VPASBJ18VNA, SBJ18VPA SMA18VNA, SMA18VPA Table of Contents Safety Information Provide adequate clearances around air openings Local Codes Product IdentificationUnpacking Providing Adequate Ventilation AIR for Combustion VentilationDetermining FRESH-AIR Flow for Appliance Location Ventilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors AIR for Combustion Ventilation InstallationCheck GAS Type Installation and Clearances for VENT-FREE OperationMinimum Noncombustible Material Clearances InstallationFloor Clearances Mantel ClearancesRound Flues Installing Damper Clamp Accessory for Vented OperationInstalling Remote Control Accessory Bracket Area of Various StandardConnecting to GAS Supply Installing Heater AssemblyInstallation Items Needed Propane/LP From To Gas Control ValveTest Pressures In Excess Of 1/2 Psig 3.5 kPa Checking GAS ConnectionsTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Operating Heater For Your Safety Read Before LightingControl Knob and Ignitor Button Location, Manual Controlled Lighting InstructionsOptional HAND-HELD Remote Operation Manual Lighting ProcedureTo Turn OFF GAS To ApplianceThermostat Series Model Ghrctb Manual ModeAuto Shutoff Feature Auto Thermostatic ModePilot Flame Pattern Wiring DiagramWhen Using Remote Inspecting BurnerBurner Injector Holder and Pilot AIR Inlet Hole Cleaning MaintenanceNatural Observed Problem Possible Cause Remedy TroubleshootingODS/pilot lights but flame goes Maintenance, Gas leak. See Warning Technical Service SpecificationsReplacement Parts Service HintsAccessories Illustrated Parts Breakdown Parts List SMA24VNA Shown, SMA24VPA Parts Available Not Shown Keep this Warranty Warranty InformationLimited Warranty VENT-FREE GAS LOG Heaters

SMA24VNA, SBJ18VPA, SBJ24VNA, SMA18VPA, SBJ24VNA, SBJ24VPA, SMA24VNA, SMA24VPA, SBJ18VNA, SBJ18VPA, SMA18VNA, SMA18VPA specifications

Desa SMA18VPA, SMA24VNA, SBJ24VNA, SBJ24VPA, SMA24VNA, SMA24VPA, SBJ18VNA, SBJ18VPA, SMA18VNA, and SMA18VPA represent a series of advanced technologies in the field of energy production and consumption. These models are integral to the development of sustainable energy solutions and stand out for their innovative features.

One of the main features shared by all these models is their ability to optimize energy efficiency. They are designed with smart energy management systems that monitor and control energy distribution effectively. This ensures that energy consumption is minimized while maximizing output, making them ideal for both residential and commercial applications.

SMA18VPA and SMA24VNA are both characterized by high-performance inverters that convert DC electricity from solar panels into AC electricity. These models utilize cutting-edge inverter technology which increases energy yield even in partial shading conditions. Similarly, SBJ series, including SBJ24VNA and SBJ18VNA, emphasize modularity and flexibility, allowing users to expand their systems according to changing energy needs.

In terms of connectivity, these models are equipped with advanced communication protocols. This includes Wi-Fi and Ethernet options, which facilitate real-time monitoring and remote management through user-friendly mobile applications. Users can seamlessly track their energy production, consumption, and savings on their smartphones or tablets.

Another notable characteristic is the emphasis on durability and reliability. The materials used in these constructions are often weather-resistant, ensuring longevity and reducing maintenance costs over time. For instance, SMA24VPA utilizes robust casing that protects internal components from environmental damage.

Furthermore, these systems are designed to be environmentally friendly. Many of the models boast certifications that confirm their compliance with international environmental standards, promoting a sustainable approach to energy consumption.

In terms of scalability, the Desa series stands out. Users can start with a smaller setup and gradually expand as their energy needs grow. This adaptability makes these models suitable for a wide range of applications from small homes to larger industrial installations.

In conclusion, Desa SMA18VPA, SMA24VNA, SBJ24VNA, SBJ24VPA, SMA24VNA, SMA24VPA, SBJ18VNA, SBJ18VPA, SMA18VNA, and SMA18VPA are at the forefront of energy technology. With their energy efficiency, advanced connectivity features, durability, environmental responsibility, and scalability, they offer optimal solutions for modern energy demands, paving the way for a more sustainable future.
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