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Manafacture: Desa Tech File size: 956.25 kb File name: Language of manual:

Follow all local codes. CAUTION: Use only new, black iron or steel pipe. Inter- nally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" diameter or greater to allow proper gas volume to fireplace. If pipe is too small, undue loss of pressure will occur. Installation must include a manual shutoff valve, union, and plugged 1/8" NPT tap. Vent Pointing Down Figure 34 - External Regulator with Vent Pointing Down (Propane/LP Only) A.G.A. Design-Certified Manual Shutoff Valve with Installation Items Needed Before installing fireplace, make sure you have the items listed below. • external regulator (supplied by installer) • piping (check local codes) • sealant (resistant to propane/LP gas) • manual shutoff valve * • test gauge connection * • sediment trap • tee joint • pipe wrench • approved flexible gas line with gas connector (if allowed by local codes) (not provided) * An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the A.G.A. design-certified manual shutoff valve from your retailer. For propane/LP connection only, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 34. Pointing the vent down protects it from freezing rain or sleet. 1/8" NPT Tap* 3" Minimum Approved Flexible Gas Line Cap Pipe Nipple Tee Joint Sediment Trap/Drip Leg Figure 35 - Gas Connection * The A.G.A. design-certified manual shutoff valve may be supplied with the appliance or you can purchase it from your retailer. IMPORTANT: Install main gas valve (manual shutoff valve) in an accessible location. The main gas valve is for turning on or shutting off the gas to the appliance. Check your building codes for any special requirements for locating manual shutoff valve to fireplaces. Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged fireplace valves. We recommend that you install a sediment trap/drip leg in supply line as shown in Figure 35. Locate sediment trap/drip leg where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap/drip leg where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into fireplace gas controls. If sediment trap/drip leg is not installed or is installed wrong, fireplace may not run properly. Natural - From Gas Meter (5" W.C. to 10.5" W.C. Pressure ) Propane/LP - From External Regulator (11" W.C. to 14" W.C. Pressure) 18 105983 OWNER’S MANUAL FIREPLACE INSTALLATION Continued CONNECTING FIREPLACE TO GAS SUPPLY Installation Items Needed • 5/16" hex socket wrench or nut-driver • sealant (resistant to propane/LP gas, not provided) 1. Open lower louver door panel by gently pulling forward. 2. Route flexible gas line (provided by installer) from manual shutoff valve to fireplace. Route flexible gas supply line through one of the access holes on side of fireplace. 3. Attach flexible gas line from gas supply to control valve (see Figure 36). 4. Check all gas connections for leaks. See Checking Gas Connections. Manual Shutoff Valve To Gas Supply (Natural) To External Regulator (Propane/LP) 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 commercial leak test solution to all gas joints. Bubbles forming show a leak. Correct all leaks at once. Pressure Testing Gas Supply Piping System Test Pressures In Excess Of 1/2 PSIG (3.5 kPa) 1. Disconnect fireplace and its individual manual shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig (3.5 kPa) will damage fireplace gas regulator. 2. Cap off open end of gas pipe where manual shutoff valve was connected. 3. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas fireplace or opening main gas valve located on or near gas meter for natural gas fireplace, or using compressed air. 4. Check all joints of gas supply piping system. Apply commercial leak test solution to all gas joints. Bubbles forming show a leak. Correct all leaks at once. 5. Reconnect fireplace and manual shutoff valve to gas supply. Check reconnected fittings for leaks. Flexible Gas Line from Manual Shutoff Valve Provided by Installer Control Valve Figure 36 - Attaching Flexible Gas Line to Control Valve Continued 105983 19 20 105983 DIRECT-VENT FIREPLACE (NATURAL/PROPANE/LP) CHDV34NA, PA FIREPLACE INSTALLATION Continued Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa) 1. Close manual s...

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