valutazioni - 2, GPA: 4.5
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Facilità d'uso
This air must be : supplied through two openings of equal area; 'one ¡located above draft diverter relief opening and .other near floor.. Total free area of each openiiig should be equal to 1 square inch for, each 1,0.00 Btuhof boiler input. There should be a minimum of 100 square inches ¡for each opening. If air openings are directly to outdoors, minimum free area should be 1 square inch per 2,000 Btu .per hour of input rating, or in accordance with ANSIZ21.30 or the latest edition of “American National Standards for Installation of Gas Appliances and Gas Piping.” 6. Advise owner of necessity for keeping air passages to boiler area free of obstructions. This clearance is necessary so combustion air can enter freely into cqm-bustion chamber. It. is .also-’-neeessary to provide adequate ventilating air. 8. All flue pipe extended through roof should be equipped with hood. 9. Boiler may be installed with either galvanized Type C vent or listed Type B vent, at option of installer. Where Type C flue or vent ¡connector is used, it shall have clearance of 6 inches bétweetí its surface and any combustible material. If Type B flue or vent connector is used, clearance from its surface to any combustible material shall be in accordance with its listing. Consult local codes to insure correctness. 10. Where two or more appliances vent into a common flue, area of common flue should at least equal area of largest flue or vent connector plus 50% of areas of additional flues or vent connectors. GAS SUPPLY LINE Comply with applicable codes and Regulations. It is good practice to run separate gas line "directly to gas meter for supplying Central heating boilers. Line should be at least as large as manual gas shutoff supplied. If calculated pressure drop exceeds 0,3 inches water, line should be run at .least one size larger than usual gas shutoff. In no case should the drop exceed 0.3 inches water,, Pipe should be supported with .adequate straps or pipe hangers. ¿Provide drip leg at bottom of supply riser. Drip leg may extend down to floor to help support weight of gas supply line. Install ground joint union between -riser or drip leg and boiler controls. See Figure 8, Joint compound (pipe dope) that is resistant to action of propane should be applied sparingly and only to male ¿reads of joints. Consult local supplier for type of compound to be used. Manual gas shutoff valve- Should-be ^approximately 5 feet above floor. Install valve so that t/S inch tapping used, to ..connect pilot ,gas. supply,-line is located on inlet (supply) side,/ i: ■ FLUE CONNECTIONS Make sure draft hood furnished with boiler is installed without modifications. The following is standard practiceior.installing flue,pipe,Jn.additio^n,jion-sult local codes and gas company requirements. J. Flue pipe must be of same size as outlet collar on draft hood. 2. Flue pipe must slope upward from boiler to chimney. MiniinuM slope is 1/4 inch upward ‘ per linear foot of flue “pipe: 3. Run pipe as directly as possible with minimum number oí turns. 4. Do not connect into chimney serving open fireplace. i\ 5. End of flue pipe must be flush with inner face of chimney liner- 6. Rigidly support .pipe with hangers and straps. 7* Chimneys should extend at least 2 feet above any object withiin radius of 15 feet. A6S034 NOTE: For .propane installations, the main manual shutoff valve is . an-integral p^rt of-the 100% shutoff safety control mounted on manifold with the electric gas control valve. Units with 'controls enclosure must have a manual main shutoff valve external to the jacket where regulations require. CAUTION; Never use a match or other open flame to check for gas leaks. After all gas connections have been made and-checked for leaks, the supply lines must be purged to eliminate trapped air. -5- SEP/02/2008/TUE 12:03 PM UTC TECH PUB FAX No. 317 240 5662 P. 006/01 2 ELECTRICAL CONNECTIONS All electrical connections are to be made in accordance with the National Electric Code and local codes governing such wiring. Field connections are to be made in accordance with the wiring label attached to the boiler. These labels are reproduced in this manual. If any of the original wire as supplied with the unit must be replaced, use type 105°C thermoplastic wire or its equivalent. WATER LINE CONNECTIONS On 234-PW-type boiler©, the water outlet must be made on the right side if the pump is mounted on the For 234-PW-type boilers with the pump mounted in front, the water outlet must be made on the left side. Before attempting any changes, consult Bryant Air Conditioning Company, BOILER WITH REFRIGERATION SYSTEM VALVES A £ B — OPEN FDR HEATING; ¿LOSE FOFI COOLING t When a water boiler is used in connection with a chilled-water system, it must be installed so that the chilled medium is piped in parallel with the heating boiler with appropriate valves to prevent the chilled medium from entering the heating boiler. An example of such piping is shown a...