Calorex Pro-Pac 140, Owners & Installation Manual

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3. PLUMBING
The Calorex pool heat pump must be connected after the filter in the
return pipe to the pool. If an existing heater is being retained, then the
Calorex should be connected between the filter and the other heater.
(See Figures 3 & 4).
1. Calorex heat pumps have water inlet/outlet connections as follows:
2. Suitable breakable couplings should be installed local to heat pump.
3. If heat pump installed at lower level than pool water then isolation
valves should be fitted
4. A drain valve or plug should be fitted to lower pipe to facilitate drain
down in winter period.
5. The condensate drain at the base of the unit collects the
condensation from the evaporator fins.This should be run away to
waste via 1½" domestic waste piping. It is therefore necessary to
ensure that the Calorex Heat Pump is placed on a level plinth so
that the condensate later can run away and not overflow the edges
of the drip-tray inside the machine.
6. When the pipework installation is complete the pool pump should
be switched on and the system tested for leaks. Also check
the filter gauge to see that there is not an excessive increase in
back pressure. If everything is then working normally the water
circulating system is ready to use.
7. Water circuit to and from unit to be capable of maintaining within
specified limits the rate of flow required by heat pump (see data
sheet).
8. All pipework must be adequately supported with allowance for
expansion/contraction especially with plastic pipework.
9. It is recommended that when installing water system the last
connections to be made in the system should be the breakable
couplings to avoid any stresses on to the unit connections.
CORRECT DRAINAGE
FOR CONDENSATE
ELBOW
'U' TRAP
SUPPLIED BY
CONTRACTOR
ADEQUATE FALL

MODEL Water in/out
connection size
MODEL Water in/out
connection size BHC
Water in/out
connection size EHC
Pro-Pac PPT 30 2" UNION SOCKET 1½ BSPM
Pro-Pac 45 1½ BSPM Pro-Pac PPT 45 2" UNION SOCKET 2" BSPM
Pro-Pac 70 1½ BSPM Pro-Pac PPT 70 3" BSPM 2" BSPM
Pro-Pac 90 1½ BSPM Pro-Pac PPT 90 3" BSPM 3" BSPM
Pro-Pac 140 2" BSPM Pro-Pac PPT 140 4" BSPM 3" BSPM
8 SD566250 ISSUE 35
PR0-PAC SYSTEM OWNER INSTALLATION MANUAL