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Instructions Design Dynamics, Modèle HCM-18-RFN

Fabricant : Design Dynamics
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The chimney flue damper must be fixed open to provide a minimum of 29 square inch flue opeining at all times during operation of the log set. A damper clamp can be used to secure the damper (see Accessories, page 18). See the National Fuel Gas Code ANSI Z223.1/NFPA 54, Section 6.6 for details about minimum flue size. INSTALLING DAMPER CLAMP Secure the damper stop clam to the edge of the damper as shown in Figure 2. If for any reason this clamp doesn't work on your fireplace, another suitable clamp or permanent stop must be iinstalled, or the damper blade must be cut or removed. Damper Damper Clamp Damper Damper Clamp Damper PLACEMENT OF APPLIANCE Center the appliance in the fireplace. Make certain the grate front feet sit inside the front edge of the fireplace and that there is adequate clearance around the appliance for access and operation. CONNECTING TO GAS SUPPLY WARNING:Aqualifiedservice personmustconnectheatertogas supply. Follow all local codes. Installation Items Needed Before installing heater, make sure you have the items listed below. • external regulator (propane/LP models only) • piping (check local codes) • sealant (resistant to propane/LP gas) • equipment shutoff valve • test gauge connection • sediment trap • tee joint • pipe wrench For propane/LP units, 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 3. Pointing the vent down protects it from freezing rain or sleet. WARNING: Connecting directly to an unregulated pro- pane/LP tank may cause an explosion. External Propane/LP Regulator Masonry Manufactured Fireplace Fireplace Figure 2 - Attaching Damper Clamp Supply Tank Vent Pointing Down Figure 3 - External Regulator with Vent Pointing Down 115481-01B INSTALLATION Continued The appliance gas inlet connection is 3/8" NPT at the regulator, located at the rear of the appliance. IMPORTANT: Hold appliance regulator with a wrench to prevent movement when connecting to inlet piping. 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 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 accessiblelocation.Theequipmentshutoffvalveisfor 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. Install a sediment trap where it is within reach for cleaning. Install in piping ...