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Страница 1: ...D DE ES SI IG GN NE ER R S S G GU UI ID DE E C CO OP PP PE ER R F FI IN N I II I B BO OI IL LE ER R 4 0 0 0 0 0 2 0 7 0 0 0 0 B t u h r...
Страница 2: ...nct easy to use manner so you can use and share information confidently and with minimal effort However it is important to remember that this guide is not intended to replace our installation manual I...
Страница 3: ...ertical Vent and Air Inlet 13 FIG 13 Vertical Vent and Sidewall Air Inlet 13 FIG 14 Aire Lock Direct Vent 14 FIG 15 Sidewall Vent 16 FIG 16 Outdoor Venting 16 FIG 17 Heat Exchanger Head Loss Models CH...
Страница 4: ...sociation Code CAN CGA B149 1 and or B149 2 and or local codes LOCATION OF UNIT Locate the unit so that if water connections should leak water damage will not occur When such locations cannot be avoid...
Страница 5: ...ng 24 beyond the sides The blocks must be placed in line so that the holes line up horizontally to provide a clear passage through the blocks This procedure should also be followed if electrical condu...
Страница 6: ...tional location and clearance requirements These requirements must be adhered to carefully since wind rain snow and cold cannot be controlled in outdoor applications See Outdoor Installation in the ve...
Страница 7: ...S VENT GAS CONNECTION TERMINAL STRIP DRAIN BURNER INSPECTION PORT OPERATOR INTERFACE PANEL LEFT SIDE FRONT GAS CONNECTION DRAIN LEFT SIDE OPERATOR INTERFACE PANEL BURNER INSPECTION PORT FRONT AIR INLE...
Страница 8: ...ions of the local building codes The equipment room must be provided with properly sized openings to assure adequate combustion air and proper ventilation when the unit is installed with conventional...
Страница 9: ...fumes are often present in areas where refrigerants salts and solvents are used Therefore be aware of swimming pool equipment water softening and cooling system placement VENTING General These boilers...
Страница 10: ...um size as determined using the appropriate tables in the National Fuel Gas Code The weight of the venting system must not rest on the water heater The venting system must be adequately supported in c...
Страница 11: ...barometric damper will maintain draft between 0 02 and 0 08 inches of negative water column ensuring proper operation The minimum flue pipe diameters for all models utilizing negative draft venting a...
Страница 12: ...e products from a high efficiency appliance may not be able to sufficiently heat the masonry structure of the chimney to generate proper draft This will result in condensing of flue products damage of...
Страница 13: ...fan powered vent cap must be made with listed Type B double wall or equivalent vent and accessories The installer supplies this vent pipe material For models CH401 751 maximum total equivalent length...
Страница 14: ...rectAire system requires installation of a single wall pipe to supply combustion air from outdoors directly to the water heater The use of double wall vent material is recommended in cold climates to...
Страница 15: ...ons common vented with other negative draft appliances require that each water heater must have a barometric damper The common vent and connectors from multiple water heaters must be sized per the req...
Страница 16: ...at the rooftop It is a requirement that both vent pipes terminate in the same pressure zone The vent system has specific vent material and installation requirements The vent piping for flue products u...
Страница 17: ...shaped structure Both the combustion air inlet cap and flue gas vent termination must be installed in the same pressure zone Sidewall Vent This vent system utilizes the internal blower of the unit to...
Страница 18: ...idewall air inlet openings Screens grills or louvers installed in the common air inlet can reduce the free area of the opening from 25 to 75 based on the materials used OUTDOOR INSTALLATION Units are...
Страница 19: ...s of water column an intermediate gas pressure regulator of the lockup type must be installed L o c h i n v a r D E S I G N E R S G U I D E C O P P E R F I N I I B O I L E R 6 1 5 8 8 9 8 9 0 0 17 TAB...
Страница 20: ...ugh the heat exchanger it is necessary to regulate the temperature rise across the heat exchanger from inlet to outlet This must be done on initial installation and periodically rechecked With the cor...
Страница 21: ...can solve many system flow complications This piping arrangement uses a dedicated pump to supply flow to the boiler The pump is sized based on the required boiler flow rate boiler head loss and head...
Страница 22: ...in accordance with ASME Boiler and Pressure Vessel Code Section IV Heating Boilers Low Flow Systems When the system flow rate is less than the minimum flow required for proper boiler operation the bo...
Страница 23: ...s shown in Figure 21 must be piped into all ON OFF boilers at the time of installation This piping is like a primary secondary boiler installation with a bypass in the secondary boiler piping Inlet wa...
Страница 24: ...g cycle The heating coil must be vented at the high point and the hot water from the boiler must enter the coil at this point Due to the fast heating capacity of the boiler it is not necessary to prov...
Страница 25: ...ing efficiency of the boiler Short cycling of the boiler creates problems with condensation in the vent stack condensation on the heat exchanger system temperature spikes and mechanical component fail...
Страница 26: ...cycles based on high discharge water temperatures For example a boiler operating with a 180 F discharge and a 20 F temperature rise would require approximately a 160 F to 165 F set point with the tem...
Страница 27: ...PANSION TANK TANK FITTING SYSTEM PUMP LOW WATER CUTOFF UNION AIR SEPARATOR L E G E N D 12 MAX HEATING RETURN LOOP HEATING SUPPLY LOOP AS CLOSE AS PRACTICAL 12 OR 4 PIPE DIAMETERS MAXIMUM DISTANCE BETW...
Страница 28: ...K FITTING SYSTEM PUMP LOW WATER CUTOFF UNION AIR SEPARATOR L E G E N D 12 MAX FROM SYSTEM RETURN AS CLOSE AS PRACTICAL 12 OR 4 PIPE DIAMETERS MAXIMUM DISTANCE BETWEEN MANIFOLD CONNECTIONS TO SYSTEM TO...
Страница 29: ...ILER PIPING WITH BYPASS FOR LOW TEMPERATURE OPERATION AS CLOSE AS PRACTICAL 12 OR 4 PIPE DIAMETERS MAXIMUM DISTANCE BETWEEN MANIFOLD CONNECTIONS TO SYSTEM TO FLOOR DRAIN 12 MAX LIT0473 L o c h i n v a...
Страница 30: ...PRESSURE REDUCING VALVE FULL PORT BALL VALVE RELIEF VALVE CHECK VALVE TEE ELBOW EXPANSION TANK TANK FITTING SYSTEM PUMP LOW WATER CUTOFF UNION AIR SEPARATOR L E G E N D This illustration is for concep...
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Страница 32: ...Lochinvar Corporation Lebanon TN 615 889 8900 Fax 615 547 1000 www Lochinvar com CH DG 05 5M 10 05 Printed in U S A...
