Assessments - 2, GPA: 3 ( )

Fabricante : United States Stove Arquivo Tamanho: 413.2 kb Arquivo Nome : Língua de Ensino:

The National Fuel Gas Code defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 BTU per hour (4.8m3per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space is defined as a space whose volume is not less than 50 cubic feet per 1,000 BTU per hour (4.8m3per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed, through openings not furnished with doors, are considered a part of the unconfined space. 6 INSTALLATION The following formula can be used to determine the maximum heater rating per the definition of unconfined space: BTU/HR = (L1+L2) Ft x (W) Ft x (H) Ft x 1000 50 Consider two connecting rooms with an open area between, with the following dimensions:(See Fig. 3, Example) L1=15-1/2 Ft., L2=12 Ft., W=12 ft., H=8Ft 50 =52800 BTU/HR If there were a door between the two rooms the calculation would be based only on the room with the heater. BTU/HR=(15-1/2) x (12) x (8) x 1000 50 FIGURE 3. =29760 BTU/HR L2 (12') L1 (15-1/2') W (12') H (8') When installing the appliance directly on carpeting, tile or other combustible material, other than wood flooring, the appliance must be installed on a metal or wood panel extending the full width and depth of the appliance.WARNING If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1, Section 5.3, or applicable local codes. Ensure the minimum clearances shown in FIGURE 4 are maintained for accessibility for purposes of servicing and proper operation. Left and right clearances are determined when facing the front of the heater.WARNING WARNING FIGURE 4. Minimum Clearances 36" 8" 8" 4" 42" Maintain these clearances to ensure adequate space around air opening for proper operation. Minimum clearances tocombustibles: Top of heater.................................36" Sides of heater...............................8" Front of heater.............................42" Rear of heater................................4" 7 GAS CONNECTION NOTICEA qualified gas appliance installer must connect the fireplace to the gas supply. Consult all local codes. CAUTION Use new black iron or steel pipe only. Internally tinned copper tubing can be used in some areas when permitted by local codes. Only use pipe of 1/2" or greater diameter to allow full gas volume to heater. Excessive pressure loss will occur if the pipe is too small. A manual shutoff valve, union and plugged 1/8" NPT pressure tapping point must be installed upstream of the heater (FIGURE 5). A sediment trap must be installed upstream of the heater to prevent moisture and contaminants from passing through the pipe to the heater controls and burners. Failure to do so could prevent the heater from operating reliably (FIGURE 5). IMPORTANT: Loosen the pipe adapter on the flex tube before installing to the TO HEATER CONTROL VALVE STAINLESS FLEXIBLE TUBE PIPE COUPLING PIPE MANUAL SHUTOFF VALVE TEE JOINT PIPE NIPPLE CAP SEDIMENT TRAP system piping. FIGURE 5. Gas Connection CHECK GAS TYPE: The gas supply must be the same as stated on heater's rating plate. If the gas supply is different, DO NOT INSTALL the heater. Contact your dealer for the correct model. 8 Connecting directly to an unregulated propane/LPG tank can cause an explosion.WARNING GAS CONNECTION The gas inlet connection is 3/8" NPT, made at the rear of the main control through the area at the rear of the pedestal. Test all gas joints from the gas meter to the heater for leaks using soap and water solution after completing connection. DO NOT USE AN OPEN FLAME. Gas Inlet Connection (3/8" NPT) FIGURE 6. Rear View of 9740 Vent-Free Gas Heater GAS PRESSURE CHECK The heater regulator controls the burner pressure which should be checked at the pressure test point located on the right side of the main control and is accessible from the side of the gas log assembly (see FIGURE 7). The pressure should be checked with the heater burning and the control set to high (HI). The pressure regulator is preset and locked to avoid tampering. If the pressure is not as specified in Product Specifications (Page 5), contact your dealer and replace the regulator. FIGURE 7. Pressure Test Point Location Control Valve Test Pressure Output Control Bracket (Rightside view facing heater) Test Pressure Input 9 10 REMOVING FRONT SCREEN WARNING FRONT SCREEN The front screen must be in place at all times when the appliance is operating. Do not obstruct the screened openings of the heater. The positioning of the logs is critical to the safe and clean operation of this heater. Sooting and other problems may result if the logs are not properly and firmly situated in the appliance. Never add additional logs or embellishment...

Baixe o seu

Para fazer o download, introduza 2 dígitos :