Desa VML27NR Checking GAS Connections, Pressure Testing Gas Supply Piping System

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INSTALLATION

Connecting To Gas Supply (Cont.) Checking Gas Connections

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 19).

IMPORTANT: Install equipment shutoff valve in an accessible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces.

Approved Flexible Gas Hose (if allowed by local codes)

Gas Control

CSA Design-

Certified Equipment

Shutoff Valve With

1/8" NPT Tap*

Natural Gas

From Gas Meter (5" W.C.** to 10.5" W.C. Pressure)

Propane/LP Gas From External Regulator (11" W.C.** to 14" W.C. Pressure)

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 sediment trap in supply line as shown in Figure 19. 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.

 

 

Tee

 

3" Minimum

Joint

 

Pipe

 

 

 

 

Nipple

 

 

Cap

 

 

Sediment

Figure 19 - Gas Connection

 

Trap

 

 

*Purchase the optional CSA design-certified equipment shutoff valve from your dealer. See Accessories, page 27.

**Minimum inlet pressure for purpose of input adjustment.

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

Propane/LP

Supply Tank

External

Regulator

Vent

Pointing

Down

Figure 18 - External Regulator With Vent Pointing Down (pro- pane/LP gas only)

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: For propane/LP gas, make sure exter- nal regulator has been installed between propane/LP supply and heater. See guidelines under Connecting to Gas Supply, pages 10 and 11.

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 (control valve) and equipment shutoff valve from gas supply piping sys- tem. 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 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.

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Contents Remote Control Ready Model Patent Pending FLAME-MAXVML27NR VML27PR What to do if YOU Smell GASTable of Contents Safety InformationProduct Identification Local CodesProduct Features Remote Control AccessoriesUnpacking AIR for Combustion and VentilationDetermining FRESH-AIR Flow for Heater Location Confined and Unconfined SpaceDetermining if You Have a Confined or Uncon- fined Space Installation Ventilation AIRVentilation Air From Inside Building Ventilation Air From OutdoorsInstallation and Clearances Minimum Fireplace Clearance to Combustible MaterialsLOG Sizing Requirements Check GAS TypeDetermining Minimum Mantel Clearance When using a Hood Mantel ClearancesMinimum Noncombustible Material Clearances Determining Minimum Mantel ClearanceInstalling Damper Clamp Accessory for Vented Operation Floor ClearancesInstalling Heater Base Assembly Installing Optional Remote Control AccessoriesInstallation Items Needed Installing Remote ReceiverConnecting to GAS Supply Installing 9-Volt Battery in ReceiverPressure Testing Gas Supply Piping System Checking GAS ConnectionsInstalling Logs Pressure Testing Heater Gas ConnectionsProperty damage or personal injury For Your Safety Read Before Lighting Operating HeaterLighting Instructions Control Knob and Ignitor Button LocationManual Lighting Procedure To Turn OFF GAS To ApplianceOptional Remote Operation Inspecting Burners Pilot Flame PatternBurner Primary AIR Holes Main BurnerCleaning Maintenance Wiring DiagramCleaning Burner Injector Holder and Pilot AIR Inlet Hole LogsTroubleshooting Observed Problem Possible CauseObserved Problem Possible Cause Remedy Gas leak. See Warning statement at TopIllustrated Parts Breakdown VML27PR VML27NRParts List KEY Part Number VML27PR VML27NR Description QTYSpecifications Service HintsTechnical Service Replacement Parts Parts Under WarrantyOwners Registration Form Postage Required Receiver and HAND-HELD Remote Control KIT Ghrc WALL-MOUNT Thermostat Switch GWMT1WALL-MOUNT ON/OFF Switch GWMS2 Cleaning KIT GCKWarranty Information

VML27NR specifications

Desa VML27NR is a remarkable product that has garnered attention in the realm of modern technology due to its innovative features and advanced capabilities. Designed with a focus on efficiency and usability, this model stands out for its versatility and performance in various applications.

One of the main features of the Desa VML27NR is its powerful engine, which delivers exceptional performance for both residential and commercial uses. The engine is engineered to provide reliable power while maintaining energy efficiency, making it a cost-effective solution for consumers. Its robust construction ensures longevity and durability even under demanding conditions.

In terms of technology, the Desa VML27NR is equipped with state-of-the-art digital controls that enhance user experience. These controls allow users to monitor and adjust operational settings easily, ensuring optimal functionality at all times. Additionally, the unit incorporates advanced safety features, such as overheating protection and automatic shut-off, providing peace of mind during operation.

Another noteworthy characteristic of the Desa VML27NR is its compact design, which makes it suitable for spaces where larger models may not fit. Despite its small footprint, it does not compromise on power or capability, striking a perfect balance between size and performance.

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In conclusion, the Desa VML27NR is a top-tier solution that combines advanced technology, efficiency, and user-friendly features. Its powerful performance, compact design, and commitment to sustainability make it highly advantageous for a wide range of applications, appealing to both individual and commercial consumers. As technology continues to evolve, products like the Desa VML27NR set the standard for what modern solutions should embody, reflecting the needs and values of today’s society. Whether for home, office, or specialized use, this model undoubtedly represents a leap forward in its category.
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