Installation manual

5
Ball
Valve
BACKWASH
FILTER
FILTER
Pool
Position for optional
Erosion Feeder
Non-Return Valve
Back-Up Heater if
required
Condensate
Water to waste
PUMP
Female/ Threaded
Socket Union
Drw.1 Recommended plumbing layout for a standard heat pump installation.
PLUMBING
Alto heat pumps are supplied with 1.5" BSP parallel threads, male. We
strongly recommend a 1.5" female socket union is applied to
inlet/outlets for future draining and servicing of the appliance.
Alto heat pumps must be installed in the return line after the filter. If an
existing heater or back-up heater has been installed then the heat pump
should be installed between the filter and the other heater. If solar heating has been installed, the heat pump
should be installed after the solar heating system. See Drw.2
If the heat pump is to be installed at a lower level than the pool then isolation valves or non-return valves should be
installed.
Do not route any plumbing lines across heater inlet panels. All plumbing should be adequately supported.
Once all plumbing connections have been completed the filtration should be turned on and the systems tested for
leaks. A flow meter has been installed next to the control panel. Alto heat pumps will generally take the full flow of
the filtration pump. In some instances if there is too much flow (see page 12 re flow meter) a by-pass may be
required. If there is insufficient flow an auxiliary booster pump may be required. Please contact your dealer for
advice.
Important - (applicable for stainless steel/copper heat exchangers) Standard unit. If your pool has an automatic
chemical dosing appliance the heat pump should be installed prior to the dosing system. See applicable drawings
(1-4) below.
2 x1.5” Female/Threaded
Socket Unions Required