74 Culligan® Culligan Top Mount (CTM) Water Filters
74 Cat. No. 01029343
Appendix A Hi-Flo 42 to CTM Conversion
1. Order the approprate retrofit kit and plumbing adapter, see table:
Original
Hi-Flo 42 Model
Multi-Tank Meter Downflow Single Meter NHWB Downflow
Plumbing Adapters**
All 01029501 (without ports) or 01029503 (with ports)
Retrofit Kits*
HRF-21T
HRF-24T
01029532 Kit 01029534 Kit
HRF-30T
HRF-36T
01029533 Kit 01029535 Kit
HDF-21-T 01029532 Kit 01029534 Kit
HDF-24-T
HDF-30-T
HDF-36-T
01029533 Kit 01029535 Kit
*Retrofit Kits include the CTM control valve, GBE controller and sizing kit.
**Certification approval is pending on the plumbing adapter with ports.
1. When you remove the Hi-Flo 42 control valve, it is critical to keep the manifold from coming up with the control
valve.
2. Drain some of the water from the system in preparation for altering the manifold.
3. Cut the manifold down to approximately 6” below the top of the tank opening. This cut can be made using a
Pipe Shooter tool that attaches to a drill or other type of extended cutting tool. The objective is to shorten the
manifold without having to raise it out of the tank. The manifold needs to be cut this low in the tank to accom-
modate the reducing fitting and the inlet basket that attaches to the CTM control.
4. Glue a 1½” X 2” PVC reducer to a piece of 1½” PVC pipe approximately 8” long
5. Glue the reducer to the 2” manifold
6. Cut the 1½” pipe flush to the top of the tank.
7. Mount the CTM control valve (See page 8).
8. Replace the eductor throat (page 16) and drain line flow control (page 13). Replace parts using the sizing
kits.
9. Insert the PRV (page 15) and vacuum breaker for metered control valves or plugs for timeclock control valve.
10. If possible, move the tank so that either the inlet or outlet pipe is lined up with the control valve. This can
decrease the amount of plumbing needed in making the conversion. Reconnect the plumbing, drain line and
brine line. Connect the PRV to a suitable floor drain independent of the drain line for emergency relief.
11. Install accessories, if applicable (page 24)
12. Attach tubing (page 18) and electrical connections (page 21 - page 23 and page 24 (for multi-tank
systems)).
13. Initiate Final Startup (page 40)
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