September
2012 Page
21
INSTALLATION: BOILER PIPING
1) BOILER DRAIN VALVES
A)
Drain valves are recommended to assist in fi lling and purging air. See chart in
connection section in door and out door locations
B)
Pipe in Tee at bottom of return (“Cold”) pipe.
C)
Pipe in Tees at top of both return (“Cold”) and supply (“Hot”) pipes.
2) PUMP
A)
A pump is required. If using isolation fl anges, ensure that they are positioned
so that the shut off is accessible.
B)
Pump motors are water lubricated and can burn out if incorrectly mounted.
The motor canister must be horizontal.
C)
Body has an arrow on the casting that indicates direction of fl ow.
D)
To rotate the motor canister, remove the four motor bolts, rotate 4-8” Max motor
and replace bolts. Ensure the junction box is NOT located underneath the circulator.
E)
When boiler is operating, pump will feel hot to the touch. This is normal.
3) PRIMARY-SECONDARY PIPING
A)
Primary-Secondary piping is recommended to ensure continuous fl ow through
the
boiler.
B)
Tees should be no more than 4-8 inches apart.
C)
A full port ball valve may be installed between the Tees (as shown) to assist in
fi lling. It must not disturb the fl ow between the Tees when in the open position.
ELECTRICAL DIAGRAMS
