TemperZone TZT-100 - Piping

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Heat Pump Water Heaters
MWP Series
Piping
The MWP Heat Pump should be located at close proximity to
the pool, pump and lter as practicably possible. Keep pipe
length as short as possible with as few bends and restrictions
as possible. Restricted ow may result in high pressure faults
occurring. Connecting pipework may be insulated to minimize
heat losses and prevent freezing in sub-zero ambient. The Heat
Pump must be installed after the water lter and before the
chlorinator.
The titanium thermoshell heat exchanger has a very low water
pressure drop in operation so a secondary boost water pump
should not be required for most residential applications but may
be required for commercial applications. The pool pump should
be sized to provide sufcient ow for the operation of the heat
pump. If the pump ow is excessive for the heat pump
operation, then that excess ow may be bypassed around the
heat pump via a balancing valve per the included schematic.
Model Water IN & OUT Connections Nominal water ow rate
MWP 230 1
1
/
2
” (38mm) PVC union 125 l/min. (2.08 l/s)
MWP 250 1
1
/
2
” (38mm) PVC union 130 l/min. (2.16 l/s)
MWP 400 2” (50mm) PVC union 200 l/min. (3.33 l/s)
MWP 800 2” (50mm) PVC union (2 pair) 400 l/min. (6.66 l/s)
Figure 4 External Piping Schematic
– typical single unit installation
Note: Multiple units, installed in-series or in-parallel, may require
additional pumps to service the ow required.
Installation
MWP unit
Pressure PVC piping
Single MWP Heat Pump Piping
3 way
valve
Flow
Switch
Filter
Chlorinator
device
Return
from
Pool
Supply
to Pool
Pool
pump
3 way
valve