Rinnai Circ-Logic Series - Troubleshooting; Sequence of Operation

11 Rinnai Circ-Logic™ with Grundfos Kit
Troubleshoong
When the pump is rst started, the sha may rotate
slowly unl water has fully penetrated the bearings. If
the pump does not run, the sha can be rotated
manually. To accomplish this, switch o the electrical
supply, and close the isolaon valves on each side of
the pump. Remove the large screw in the middle of
the nameplate. Insert a small at blade screwdriver
into the end of the sha, and gently turn unl the
sha moves freely (see Figure 8). Replace and ghten
the plug. Open the isolaon valves and wait 2 to 3
minutes for the system pressure to equalize before
starng the pump. (See Figure 8)
For technical assistance, please contact Rinnai at
1-866-RINNAI1 (746-6241).
Sequence of Operaon
A. When the manual switch of the Grundfos mer is
in the “ON “ posion, the Cir-Logic™ will control
the pump.
B. When the manual switch is in the “TIMER” posi-
on:
- if the mer output relay is acvated the Cir-
Logic™ will control the pump.
- if the mer output relay is deacvated the pump
will remain o.
C. When the manual switch is in the “OFF posion
the pump will not run.
Sequence of Operaons Flowchart
Figure 8
NOTE
The isolation valves are to be field supplied. This image
is just for illustration purposes only.