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III. Indirect Water Heater Piping
A. CONNECT Alliance™ or other Indirect Water Heater Piping as shown in Figures 15 and 16. Refer to Alliance™ or other
Indirect Water Heater Instruction Manual for additional installation information.
Figure 20: Indirect Water Heater Piping on CL Series Water Boiler
1.
CL SERIES WATER BOILER - Figure 20 shows indirect water heater piping on typical hot water heating system. Boiler
piping is the same as for any two-zone system. Figure 20 shows circulator zoning, which is usually preferred for indirect
water heaters. Size the circulator and indirect water heater piping to obtain the boiler water ow through the indirect
water heater called for by the indirect water heater manufacturer. Refer to the indirect water heater instruction manual for
additional details.
Figure 21: Indirect Water Heater Piping on CL Series Steam Boiler
2.
CL SERIES STEAM BOILER - All CL Series steam boilers are equipped with tappings to permit the connect of an
Alliance™ or other indirect water heater. In this type of system, hot boiler water is drawn from below the water line and
passed through the heat exchanger in the indirect water heater. This section describes boiler-side piping only. Refer to the
indirect water heater instruction manual for additional details.