a Calorex ‘34’ range Heat Pumps have water inlet/outlet connections as
follows:
AW834/1234/1534 models ¾ “ BSP parallel, male.(with ¾” BSPF x 1½” ABS
male adaptors supplied loose).
AW3034/7034 1 ½” BSP parallel, male.
The machine is supplied with bungs fitted in the water connection fittings.
These need to be removed before the unit is installed.
b If an existing heater is being retained, the Calorex Heat Pump should be
connected before the existing heater.
c Suitable breakable couplings should be installed local to heat pump.
d If heat pump is installed at lower level than the water then isolation valves
should be fitted.
e Drain valve or plug should be fitted to lower pipe to facilitate drain down in
winter period.
f Connections on all models are by parallel female fittings sealed by silicone
mastic these should be hand tightened only, otherwise damage may result to
the threads of plastic fittings.
g The condensate drain at the base of the unit collects the condensation from
the evaporator fins. On 834-1534 models his should be run away to waste via
¾” domestic waste piping using connector supplied. On 3034/7034 models
the waste piping needs to be 1 ½”. It is therefore necessary to ensure that the
Calorex unit is placed on a level plinth so that the condensate water can run
away with adequate fall to waste i.e.½” per foot min and must incorporate a ‘u’
trap as to not overflow the edges of the drip-tray inside the machine.
h When the pipework installation is complete the pump should be switched
on and the system tested for leaks. If everything is then working normally the
water circulating system is ready to use.
i 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).
j All pipework must be adequately supported with allowance for expansion/
contraction especially with plastic pipework.
k It is recommended that when installing water systems the last connections to
be made in the system should be the breakable couplings to avoid any stresses
on to the unit connections.
IMPORTANT
1. Maximum pressure of water in heat pump circuit should not exceed
3.5kg/cm
2
(50 psi).
3. PLUMBING
INCORRECT DRAINAGE
FOR CONDENSATE
CORRECT DRAINAGE
FOR CONDENSATE
THIS TYPE OF
INSTALLATION SHOULD
BE AVOIDED
ELBOW
ADEQUATE FALL
U TRAP
7
SD331851 ISSUE 28
