Installation / Operation Instruction Manual

19
Water Connections continued-
CONNECT WATER BOILER SUPPLY PIPING
1. For a space heating system that utilizes ZONE VALVES, refer to
Figure 2. The indirect-fired water heater connection labeled “FROM
BOILER SUPPLY” should be piped to the boiler supply piping. Mount
the circulator making sure the flow arrow points toward the water
heater. The use of shut-off valves and unions are recommended for
future service convenience. The use of an air separator and vent is
recommended to eliminate air in the system. Pipe and fittings
between the boiler and indirect-fired water heater must be ¾”
diameter or larger.
CAUTION
Maximum boiler water supply temperature to the indirect heat
exchanger must not exceed 240°F (116°C).
Figure 2 - Water Boiler Piping with Zone Valves
2. For a space heating system that utilizes CIRCULATORS, refer to
Figure 3. The indirect-fired water heater connection labeled “FROM
BOILER SUPPLY” should be piped to the boiler supply piping. Mount
the circulator making sure the flow arrow points toward the water
heater. The use of shut-off valves and unions are recommended for
future service convenience. The use of an air separator and vent is
recommended to eliminate air in the system. Pipe and fittings
between the boiler and indirect-fired water heater must be ¾”
diameter or larger.