Desa VFRMV24PA installation manual Checking GAS Connections, To Gas Control Valve, Propane/LP From

Page 14

INSTALLATION

Continued

Installation must include an equipment shutoff valve, union and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 13).

IMPORTANT: Install equipment shutoff valve in an accessible location within 6 feet of the appli- ance. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.

WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.

We recommend that you install a sediment trap in supply line as shown in Figure 13, depending on your model. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.

Approved Flexible Gas Hose (if allowed by local codes)

CAUTION: Avoid damage to gas control. Hold gas control with wrench when connecting it to gas piping and/or fittings.

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once.

WARNING: Never use an open flame to check for a leak. Apply a noncorrosive leak detec- tion fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: Make sure ex- ternal regulator has been in- stalled between propane/LP supply and heater. See guide- lines under Connecting to Gas Supply, page 13.

To Gas

Control

Valve

CSA Design-Certified

Equipment Shutoff Valve

With 1/8" NPT Tap*

3" Minimum

Tee

Pipe

Cap

Joint

Nipple

 

Propane/LP - From

External Regulator

(11" W.C.** To 14"

W.C. Pressure)

Natural - From Gas

Meter (5" W.C.**

To 10.5" W.C.

Pressure)

Sediment Trap

Figure 13 - Gas Connection (Remote-Ready Models Only)

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Acces- sories, page 26.

**Minimum inlet pressure for purpose of input adjustment.

14

www.desatech.com

114745-01B

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Contents VFRMV18NA, VFRMV18PA VFRMV24NA, VFRMV24PA Ansi Z21.11.2a-2003 Ansi Z21.60-2003Table of Contents Safety Information Provide adequate clearances around air openings Unpacking Product IdentificationLocal Codes Determining FRESH-AIR Flow for Appliance Location AIR for Combustion VentilationProviding Adequate Ventilation Ventilation AIR Ventilation Air From Inside BuildingAIR for Combustion Ventilation Installation Ventilation Air From OutdoorsInstallation and Clearances for VENT-FREE Operation Check GAS TypeInstallation Minimum Noncombustible Material ClearancesMantel Clearances Floor ClearancesInstallation Items Needed Installing Damper Clamp Accessory for Vented OperationInstalling Heater Assembly Masonry Manufactured FireplaceFireplaceConnecting to GAS Supply Propane/LP External Regulator Supply Tank Vent Pointing DownPropane/LP From Checking GAS ConnectionsTo Gas Control Valve Test Pressures In Excess Of 1/2 Psig 3.5 kPa Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPaLighting Instructions For Your Safety Read Before LightingOperating Heater Shutting Off Heater To Turn OFF GAS To AppliancePropane/LP Natural ON/OFF Series Model Ghrcb Manual Lighting ProcedureOptional HAND-HELD Remote Operation Thermostat Series Model GhrctbPilot Flame Pattern Auto Shutoff FeatureInspecting Burners Check pilot flame pattern and burner flame pat- terns oftenBurner Injector Holder and Pilot AIR Inlet Hole Cleaning MaintenanceBurner Flame Pattern Wiring Diagram Propane/LPTroubleshooting Observed Problem Possible Cause RemedyClean ODS/pilot see Out when control knob is reSafety interlock system has Low gas pressure AssemblyOperation Processes and logs curing Hours of operation Cleaners or similar productsGas regulator defective Replace gas regulator Turning control knob to HIGas leak. See Warning Technical Service SpecificationsReplacement Parts AccessoriesWALL-MOUNT Thermostat Switch GWMT1 Receiver and HAND-HELD Thermostat Remote Control KIT GhrctbReceiver and HAND-HELD Remote Control KIT Ghrcb FB36CA, FB42C Series CIRCULATING, FB36NCA, FB42NCIllustrated Parts Breakdown VFRMV18NA, VFRMV18PAParts List 114745-01B 114745-01B Limited Warranty VENT-FREE GAS LOG Heaters Warranty InformationKeep this Warranty

VFRMV24PA, VFRMV18PA, VFRMV18NA, VFRMV24NA, VFRMV24PA specifications

Desa's VFRMV series is a line of advanced heating solutions designed for energy efficiency and optimal comfort. The series includes models VFRMV24PA, VFRMV18PA, VFRMV18NA, VFRMV24NA, and VFRMV24PA. Each model is tailored to meet different heating demands, making them suitable for various residential and commercial applications.

One of the defining features of the VFRMV series is its inverter technology, which adjusts the compressor speed to match the heating or cooling needs of the environment. This capability not only enhances energy efficiency but also contributes to a quieter operation. Users can expect significant energy savings, as the inverter technology minimizes energy consumption during periods of low demand.

Each model in the VFRMV series boasts high-performance SEER and HSPF ratings, indicating superior energy efficiency and performance. With such ratings, these units are designed to make substantial contributions to reducing heating and cooling costs while complying with modern environmental standards.

The VFRMV24PA and VFRMV24NA models are particularly effective in larger spaces, offering robust heating capacities while remaining energy efficient. On the other hand, the VFRMV18PA and VFRMV18NA models cater to medium-sized spaces, ensuring that homes or offices maintain a comfortable atmosphere without overspending on energy bills.

Additional characteristics include advanced filtration systems that improve indoor air quality by removing dust, allergens, and pollutants. This feature is particularly beneficial for allergy sufferers or anyone keen on maintaining a healthier living environment.

Moreover, the VFRMV series incorporates smart home compatibility, allowing users to control their heating and cooling systems remotely via smartphone apps. This feature not only adds convenience but also enables better energy management, as users can adjust settings based on their schedules or occupancy patterns.

In summary, Desa's VFRMV series, comprising models VFRMV24PA, VFRMV18PA, VFRMV18NA, VFRMV24NA, and VFRMV24PA, offers a blend of efficiency, performance, and advanced technology. The use of inverter technology, high SEER and HSPF ratings, robust heating capabilities, advanced filtration, and smart home features make these units ideal choices for anyone looking to enhance comfort while minimizing energy expenses.
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