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Figure 4: Restrictions on installation with the space between the tank unit and the
heat pump unit
Overhead view
Standard layout
Total piping length: 4 metres maximum
per way
gure 4
Number of bends: 6 maximum
Power requirement
The power requirement for the system is a dedicated 15 amp circuit fitted with a
circuit breaker. This circuit may be connected to constant power or off-peak.
Installation of this system must be carried out only by a qualified installation
technician (electrical or plumbing).
The surface to which the heat pump unit is installed must be firm, preferably a
concrete pad or block. If the surface is firm there is no need to fix the unit to a base
surface, unless there is a likelihood of high wind or local vibration. If the heat pump
unit and tank unit are fixed, appropriate fixing devices should be used.
A pressure and temperature relief (PTR) valve is included in the installation kit of
the tank unit. This is installed in a defined point near the top of the tank unit. The
PTR valve must have a clear space where escaping steam or water can flow freely.
The installation site must be well drained so that any water accumulating (such as
local rain or pipe leakage) will drain away and not enter the heat pump unit and the
tank unit.
Local water pressure must be a minimum of 200 kPa to ensure efficient functioning.
Note: The entire system is set up and fully functional when supplied. Once all the water
and electric connections have been made the system finds the right timing to run the water
heating cycle automatically as long as the electricity is available. The only adjustment
required is the current time setting on the timer setting panel under the top housing cover,
especially if the blockout time setting is desired. See current time setting and blockout time
section on page 14.
Side view
Sanden Heat Pump – Installation Manual
Page 6 of 26
Keep the piping run to a minimum as
the longer the pipe run the greater the
potential for heat
loss.
(A) Difference in height
between the base of tank and
base of Heat pump should be
no more than: 3m Max.
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