Troubleshooting; Sequence Of Operation - Rinnai Circ-Logic Series Manual

Troubleshooting

When the pump is first started, the shaft may rotate
slowly until water has fully penetrated the bearings. If
the pump does not run, the shaft can be rotated
manually. To accomplish this, switch off the electrical
supply, and close the isolation valves on each side of
the pump. Remove the large screw in the middle of
the nameplate. Insert a small flat blade screwdriver
into the end of the shaft, and gently turn until the
shaft moves freely (see Figure 8). Replace and tighten
the plug. Open the isolation valves and wait 2 to 3
minutes for the system pressure to equalize before
starting the pump. (See Figure 8)
The isolation valves are to be field supplied. This image
is just for illustration purposes only.
For technical assistance, please contact Rinnai at
1-866-RINNAI1 (746-6241).
Figure 8
NOTE

Sequence of Operation

A. When the manual switch of the Grundfos timer is
in the "ON " position, the Cir-Logic™ will control
the pump.
B. When the manual switch is in the "TIMER" posi-
tion:
- if the timer output relay is
Logic™ will control the pump.
- if the timer output relay is
will remain off.
C. When the manual switch is in the "OFF position
the pump will not run.
Sequence of Operations Flowchart
11 Rinnai Circ-Logic™ with Grundfos Kit
activated
the Cir-
deactivated the pump