Install suction and discharge flange connectors on the pipe ends
WARNING:
• Burn hazard. Make sure that each flange gasket remains seated in the flange groove
during and after installation.
• Burn hazard. Do NOT re-use old gaskets. When disassembling a gasketed joint,
always use a new gasket upon reassembly.
1. Use pipe hangers near the pump in order to support the suction and discharge
piping.
This minimizes pipe strain on the pump.
2. Install the
flange gaskets between the pump body flanges and the suction and
discharge pipe flanges.
Use a 7/16 in. x 1-1/2 in. capscrew and a matching nut in order to connect the pump
to the flanges. The use of PTFE tape sealer or a high quality thread sealant is
recommended.
CAUTION:
Burn hazard. The use of PTFE impregnated pipe and PTFE tape on
pipe threads provides lubricity which can lead to overtightening and
breaks. Do not overtighten.
3. Line up the vertical and horizontal piping so that the bolt holes in the pump flanges
match the bolt-holes in the pipe flanges.
NOTICE:
Do not attempt to spring the suction or discharge lines in position. This may result in
unwanted stress in the pump body, flange connections and piping.
The code for Pressure Piping (ANSI B31.1) lists many types of supports available for
various applications.
4. Evenly torque the suction and discharge flange bolts to 115 in-lbs (12 Nm).
WARNING:
Burn hazard. Make sure that the flange bolts or ring nuts have been
properly tightened and that the solder connections do not leak.
Connect the wiring
WARNING:
Disconnect and lock out electrical power before installing or servicing the unit.
Electrical Hazard:
Make sure that all connections are secure and the conduit box cover is closed before you
connect the electrical power.
CAUTION:
Make sure that all wiring is rated to withstand at least 194°F (90°C).
Installation
NRF
™
-25,36,45/NBF
™
-25,36, and 45 Circulator Installation, Operation, and Maintenance Manual 9
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