Water Piping; Water Flow Rate; Water By-Pass Kit; Plumbing Diagram - Waterco Electroheat ECO-V 17kW Installation And Operation Manual

07 I Pool Heat Pump

Water Piping

The supplied plumbing layout must be followed without exception:
1. pool pump
2. filter
3. pool heat pump
4. chlorinator (when installed).
rigid PVC piping is recommended with all joints primed and glued with a suitable PVC
adhesive cement. If rigid PVC pipe is not available,a suitable flexible hose of adequate
diameter may be utilised with stainless steel clamps. When the piping installation is
complete, operate the pool pump and check the system for leaks. Then check the
filter pressure gauge to see that excessive pump head pressure is not indicated.

Water Flow Rate

The recommended water flow rate range varies depending on the size of the heat
pump to ensure maximum heat transfer efficiency is between 110 - 195 litres per minute.
The optimal flow rate is the mid point of this range. use the bypass valve to adjust the
flow rate to within the recommended range. See Performance Specifications table
page 13.

Water By-pass Kit

A bypass kit consisting of 3 X two way valves must be installed for adjustment of
water flow and ease of service. Waterco offer prefabricated water bypass kits to fit
their heat pump domestic range. Ask your local Waterco sales office for details.

Plumbing Diagram

!
HEAT PUMP
Water Out
Water by-pass
Water In
Filter
MultiCyclone
Plumbing connections to
the heater must be made
by hand only as it may
break the water Inlet or
Outlet connections.
From Spa
A check valve or a loop MUST be installed between the pool heat pump and any
1.
automatic chlorinator to prevent highly chlorine concentrated water from flowing
back to the pool heat pump when the pool pump is not running.
2. These units are fitted with a flow switch which are not effected by water pressure.
Therefore, the fitment of a flow check valve due to the installed height either
above or below water level is not required.
3. For units installed above the pool water level the return water to the pool valve on
the bypass valve set should be closed approximately 15-20% to ensure the heat
exchanger is completely full of water to allow the heat transfer to occur.
Pool Heat Pump I 08
Vertical Trap
SPA POOL
Check
Valve
To Spa
Chlorinator
or Chlorine
Generator
To Pool
SPA POOL
3 Way Valve
From Pool