Desa LDL3930NR, LDL3930PR Checking GAS Connections, Pressure Testing gas Supply Piping system

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INSTALLATION

Checking Gas Connections

13

INSTALLATION

Continued

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections, internal and external to unit, 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 detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: Make sure external regulator has been installed between propane/LP supply and heater. See guidelines under Connecting to Gas Supply, page 12.

Pressure Testing gas Supply Piping system

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1.Disconnect appliance with its appliance main gas valve (con- trol valve) and equipment shutoff valve from gas supply pip- ing system. Pressures in excess of 1/2 psig will damage heater regulator.

2.Cap off open end of gas pipe where equipment 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 located on or near gas meter for natural gas, or using compressed air.

4.Check all joints of gas supply piping system. Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Reconnect heater and equipment shutoff valve to gas supply. Check reconnected fittings for leaks.

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1.Close equipment shutoff valve (see Figure 17).

2.Pressurize supply piping system by either opening propane/LP sup- ply tank valve for propane/LP gas or opening main gas valve lo- cated on or near gas meter for natural gas, or using compressed air.

3.Check all joints from gas meter to equipment shutoff valve for natural gas or propane/LP supply to equipment shutoff valve for propane/LP (see Figures 18 and 19). Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Pressure Testing Heater Gas Connections

1.Open equipment shutoff valve (see Figure 17).

2.Open main gas valve located on or near gas meter for natural gas or open propane/LP supply tank valve.

3.Make sure control knob of heater is in the OFF position.

4.Check all joints to gas control (see Figures 18 or 19). Apply noncorrosive leak detection fluid to all joints. Bubbles form- ing show a leak.

5.Correct all leaks at once.

6.Light heater (see Operating Heater, pages 15 through 17). Check all other internal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appliance, page 16).

Open

Equipment

Shutoff

Valve

Closed

Figure 17 - Equipment Shutoff Valve

Equipment Shutoff Valve

Gas Control

Propane/LP

Valve Location

Supply Tank

Figure 18 - Checking Gas Joints (Propane/LP only)

Equipment Shutoff Valve

Gas Control

Valve Location

Gas Meter

Figure 19 - Checking Gas Joints (Natural Gas Only)

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Contents What to do if YOU Smell GAS OWNER’S Operation Installation ManualSafety Information Table of ContentsUnpacking Local CodesProduct Identification Product FeaturesAIR for Combustion and Ventilation Confined and Unconfined Space Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors Check GAS Type InstallationLOG Sizing Requirements Minimum Noncombustible Material Clearances If Not Using MantelMantel Clearances Determining Minimum Mantel Clearance When Using a HoodFloor Clearances Determining Minimum Mantel ClearanceInstalling Heater Base Assembly Installing Damper Clamp Accessory for Vented OperationInstallation Items Needed Area of Various StandardInstalling Battery into Remote Installing Batteries in ReceiverSure regulator Connecting to GAS SupplyPressure Testing Heater Gas Connections Pressure Testing gas Supply Piping systemChecking GAS Connections Rear Log Log #1 Placement Installing LogsOperating Heater For Your Safety Read Before LightingLighting Instructions HAND-HELD Remote Operation Manual Lighting ProcedureTo Turn OFF GAS To Appliance Shutting Off HeaterPilot Flame Pattern Inspecting BurnersBurner Primary AIR Holes Main BurnerCleaning Burner Injector Holder and Pilot AIR Inlet Hole Cleaning and MaintenanceLogs Observed Problem Possible Cause Remedy TroubleshootingMaintenance, Gas leak. See Warning statement Models Illustrated Parts BreakdownLDL3930NR and LDL3930PR Parts List Replacement Parts SpecificationsWiring Diagram Service Hints Technical ServiceOwners Registration Form Postage Required Accessories Warranty Information

LDL3924PR, LDL3930NR, LDL3930PR specifications

Desa LDL3924PR, LDL3930PR, and LDL3930NR represent a comprehensive range of innovative HVAC solutions. Each model is engineered to provide efficient heating and cooling in residential and commercial applications, ensuring optimal thermal comfort throughout the year.

The LDL3924PR model stands out with its advanced inverter technology, enabling variable speed operation that adjusts according to the heating or cooling demand. This not only enhances energy efficiency but also promotes quieter operation, making it ideal for residential settings. By seamlessly adapting to temperature fluctuations, users experience consistent comfort without the energy spikes often associated with conventional systems.

Similarly, the LDL3930PR model incorporates robust features such as high SEER (Seasonal Energy Efficiency Ratio) ratings, which indicate superior energy efficiency during cooling cycles. This model is specifically designed to work efficiently even in extreme weather conditions, maintaining performance in both high temperatures and colder climates. The extended lifespan of the compressor is another hallmark, thanks to its advanced protection mechanisms and durable construction materials.

The LDL3930NR is particularly notable for its eco-friendly refrigerant, which significantly reduces greenhouse gas emissions while maintaining excellent cooling efficiency. This model focuses on sustainable cooling solutions, aligning with global initiatives to combat climate change. With a sleek design, it blends seamlessly into modern spaces, making it a popular choice for aesthetic-conscious consumers.

All three models boast user-friendly interfaces, enabling easy control and customization of settings. Smart capabilities are integrated into the design, allowing for remote access and monitoring via mobile applications. This feature empowers users to adjust settings from anywhere, optimizing energy usage and ensuring comfort is always within reach.

In addition, these models include multi-stage filtration systems that not only enhance indoor air quality but also reduce allergens and pollutants. With low operating noise levels and aesthetically pleasing designs, the Desa LDL series is capable of enhancing any environment while promoting energy efficiency.

Whether for residential or commercial use, Desa's LDL3924PR, LDL3930PR, and LDL3930NR models exemplify the perfect integration of technology, efficiency, and user-centric design principles, making them top choices in the modern HVAC market.
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