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Manafacture: Design Dynamics File size: 678.08 kb File name: Language of manual:

The charts in Figure 2, page 6 indicate technical information regarding the installation of your gas log set. Please make sure that all of the specifications shown are applicable before installation is attempted. The fireplace must include a flue and venting system with the minimum openings shown in Figure 2, page 6. Log Set Assembly Grate Ceramic Burner Chassis Figure 1 - Product Identification (Ramp Pan Burner) Installation Continued Model Burner DESCRIPTION Btu Input Minimum Vent Opening VTD-18N-JHB 18" Ramp 59,000 8" dia. VTD-24N-JHB 24" Ramp 69,000 8" dia. VTD-30N-JHB 30" Ramp 74,000 8" dia. MINIMUM FIREBOX SIZES MODEL FRONT WIDTH BACK WIDTH* DEPTH HEIGHT VTD-18N-JHB 28" 16" 14" 18" VTD-24N-JHB 29 3/4" 17" 15 1/2" 18" VTD-30N-JHB 36" 27" 18" 18" *At depth indicated BURNER ORIFICE LOG SIZE NATURAL INCHES NUMBER 18" 0.1495 25 24" 0.1570 22 30" 0.1660 19 FUEL INLET PRESSURE SPECIFICATIONS (W.C.) MIN. MAX. NG 5.5" 10.5" Figure 2 - Technical Information Charts VENTING SPECIFICATIONS FOR INSTALLATION The fireplace chimney flue and vent must be drafting properly. To check the vent for proper drafting: Light a tightly rolled newspaper on one end and place it at the inside front edge of the fireplace. Observe the smoke and be sure the vent is properly drawing it up the chimney. If the smoke spills out into the room, extinguish the flame and remove any obstruction until proper venting is achieved. The chimney flue must remain open a minimum of 3" at all times during the operation of this log set. Installing Damper Clamp Secure the damper stop clamp to the edge of the damper as shown in Figure 3. If for any reason this clamp doesn't work on your fireplace, another suitable clamp or permanent stop must be installed, or the damper blade must be cut or removed. Damper Clamp Damper Damper Clamp Damper Damper Masonry Fireplace Manufactured Fireplace Figure 3 - Attaching Damper Clamp Installation Continued CONNECTING TO GAS SUPPLY WARNING: A qualified service person must connect heater to gas supply. Follow all local codes. WARNING: Never connect natural gas fireplace to private (non-utility) gas wells. This gas is commonly known as wellhead gas. Installation Items Needed Before installing log set, make sure you have the items listed below. • piping (check local codes) • sealant (resistant to propane/LP gas) • equipment shutoff valve* • test gauge connection* • adjustable (crescent) wrench or pliers • sediment trap • tee joint • pipe wrench * A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. CAUTION: Use only new, black iron or steel pipe. Internally- 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 heater. If pipe is too small, undue loss of volume will occur. 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 log set (see Figure 4). 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. 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 4. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and appliance. 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. CAUTION: Avoid damage to gas control. Hold gas control with wrench when connecting it to gas piping and/or fittings. CSA Design-Certified Equipment Shutoff Valve with 1/8" NPT Tap* Approved Flexible Gas Hose (If allowed by local codes) 3" Min. From Gas Meter (5" W.C.** to 10.5" W.C. Pressure) Pipe Cap Tee Nipple Joint Sediment Trap Figure 4 - Gas Connection * Purchase the optional CSA design-certified shutoff valve from your dealer. ** Minimum inlet pressure for purpose of input adjustment. 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. Pressure Testing Gas Supply Piping System Test Pressures In Excess Of 1/2 PSIG (3.5 kPa) 1. Disconnect log set with its individual equipment sh...

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