Caution, Instructions for boiler connections – LAARS Stor - Installation, Operation and Maintenance Instructions User Manual
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Water Connections continued-
4. NEVER OPERATE THE WATER HEATER WITHOUT
FIRST BEING CERTAIN THAT IT IS FILLED WITH
WATER.
INSTRUCTIONS FOR BOILER CONNECTIONS
The indirect-fired heater connection labeled “To Boiler Return” should
be piped to the boiler return piping as close to the boiler as possible
and especially after any flow control or check valves in the space
heating return piping. The use of a union and a shut-off valve is
recommended. The use of a flow control or check valve is required to
prevent back flow through the water heater during operation of the
space heating system. Pipe and fittings between the boiler and
indirect-fired water heater should be ¾” diameter or larger.
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).