Installation / Operation Instruction Manual

20
Water Connections continued-
CONNECT STEAM BOILER SUPPLY PIPING
Figure 5 represents a typical steam boiler connection diagram. Refer to
the boiler installation manual or contact the boiler manufacturer for an
appropriate piping diagram. The use of a union, shut-off valves, and a
drain valve is recommended for future service convenience. The use of an
in-line “Y”-style strainer is required to prevent accumulation of sludge in
the water heater’s coil.
Figure 5 – Typical Steam Boiler Connections (connections
available below the water line)
FILL BOILER SYSTEM
1. On new boiler installations, DO NOT purge the boiler or space
heating system through the water heater. During any boiler or
space heating system flushing, cleaning, or purging, the water
heater should be isolated to avoid possible attack on the coil by
chemical additives.
2. Purge air from boiler/water heater piping.
3. Check system for leaks. Repair as necessary.
NOTICE
Typical steam boiler without connections available below the
water line is not recommended due to insufficient water
temperature, especially during warmer months when the space
heating system is not operational. Boiler water temperature at
the bottom of a steam boiler can be 50°F lower than the boiler’s
water temperature limit setting during such periods.