Desa VFRMV18NA, VFRMV18PA, VFRMV24NA Ventilation AIR, Ventilation Air From Inside Building

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6

AIR FOR COMBUSTION AND VENTILATION

Ventilation Air

AIR FOR COMBUSTION AND

VENTILATION

Continued

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining unconfined space. When ven- tilating to an adjoining unconfined space, you must provide two permanent 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). 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 required size of ventilation grills or ducts.

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the outdoors or spaces open to the

Ventilation

Grills

 

Into Adjoining

Or

Room,

Remove

Option 1

Door into

 

 

Adjoining

 

Room,

 

Option

 

3

12"

Ventilation Grills

Into Adjoining Room,

Option 2

outdoors. These spaces include attics and crawl spaces. Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

IMPORTANT: Do not provide openings for inlet or outlet air into attic if attic has a thermostat-controlled power vent. Heated air entering the attic will activate the power vent.

12"

Figure 2 - Ventilation Air from Inside Building

Outlet Air

Inlet

Air

Outlet

Ventilated

Attic

Air

 

To Attic

To

Crawl

Space

 

 

Inlet Air

 

Ventilated

 

 

 

 

 

 

Crawl Space

 

 

 

 

 

 

 

Figure 3 - Ventilation Air from Outdoors

For more information, visit www.desatech.com

114745-01

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Contents Unvented Vent Free GAS LOG Heater What to do if YOU Smell GASTable of Contents Safety Information Product Identification Local CodesSafety Device Optional Remote Control AccessoriesProduct Features Local CodesDetermining FRESH-AIR Flow for Appliance Location Determining if You Have a Confined or Unconfined SpaceVentilation AIR Ventilation Air From Inside BuildingInstallation Check GAS TypeInstallation Minimum Noncombustible material ClearencesInstallation Mantel ClearancesFloor Clearances Installing Heater Assembly Attaching Damper ClampInstallation Connecting to GAS SupplyChecking GAS Connections PROPANE/LPNatural Checking Gas Joints propane/LP only Lighting Instructions What to do if YOU Smell GASOperating Heater Manual Lighting ProcedureRemote Control Operation To Turn OFF GAS to ApplianceOperating Heater Thermostat Control OperationPilot Flame Pattern Burner Flame PatternCleaning Burner Injector Holder and Pilot AIR Inlet Hole Injector Holder On Outlet Burner TubeTroubleshooting Observed Problem Possible Cause RemedyTroubleshooting Troubleshooting Specifications VFRMV18NA VFRMV24NAService Hints Service Hints Technical Service Replacement PartsIllustrated Parts Breakdown VFRMV18NA, VFRMV18PA VFRMV24NA, VFRMV24PAParts List Part Number forWALL-MOUNT Thermostat Switch GWMT1 AccessoriesReceiver and HAND-HELD Remote Control KIT Ghrcb WALL-MOUNT ON/OFF Switch GWMS2This page Intentionally Left OWNER’S Registration Form Postage Required 114745-01 Warranty Information Limited Warranty VENT-FREE GAS LOG Heaters

VFRMV24NA, VFRMV18NA, VFRMV18PA specifications

The Desa VFRMV18NA, VFRMV18PA, and VFRMV24NA are advanced heating solutions designed to efficiently warm residential spaces while providing enhanced user comfort and convenience. These models are part of the VFRMV series, known for their reliability, innovative technology, and energy efficiency.

One of the main features of the VFRMV series is its variable refrigerant flow (VRF) technology. This allows the system to modulate the amount of refrigerant sent to each indoor unit based on the current heating or cooling load, resulting in optimal energy consumption. This flexibility not only saves energy but also ensures that the desired temperature can be quickly achieved and maintained across different rooms.

The VFRMV18NA and VFRMV18PA models are designed for residential use, with the VFRMV18PA specifically including additional features for enhanced performance in various climatic conditions. They come equipped with inverter-driven compressors, which adjust their speed to meet demand, leading to quieter operation and improved efficiency. This inverter technology ensures that energy consumption decreases during periods of lower demand, making these models environmentally friendly and cost-effective.

The VFRMV24NA model, with its higher capacity, is suitable for larger spaces or homes needing additional heating and cooling power. Like its counterparts, it features a high SEER (Seasonal Energy Efficiency Ratio) and HSPF (Heating Seasonal Performance Factor) ratings, indicating its efficiency in energy use, which translates into savings on energy bills for homeowners.

In terms of characteristics, all three models incorporate user-friendly controls, allowing homeowners to easily adjust settings and schedule operations. Smart technology integration enables remote monitoring and control via mobile apps, giving users the ability to manage their indoor climate on the go.

Additionally, the VFRMV series features advanced filtration systems that improve indoor air quality by capturing dust and allergens, making these models an excellent choice for households with allergy sufferers. The units are also designed with sleek, modern aesthetics, ensuring they blend seamlessly with a variety of interior designs.

In summary, the Desa VFRMV18NA, VFRMV18PA, and VFRMV24NA offer cutting-edge technology, impressive efficiency, and user-friendly features. With their VRF technology, inverter-driven compressors, and smart controls, these heating solutions provide an ideal choice for homeowners seeking comfort, efficiency, and convenience in their indoor environments.
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