Heat Pump Unit Installation - Sanden GS3-45HPA-US Installation Manual

Figure 4: Restrictions on installation with the space between the tank unit and the
heat pump unit
Overhead view
Standard layout
2"or
more
>24" or 600mm
(Minimum Separation
Maximum pipe length 50 ft ( 15 m) per
line between Tank & Heat Pump
Unit.
Maximum number of bends – 6, use
long radius bends not street "L's"

Heat pump Unit Installation


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 to fixed, appropriate fixing devices for the
weight/expected duty should be used. It is permissible to install the Heat Pump on
the side of a wall provide an adequate support is used.
Note: For California installation the Tank section water heater must be braced,
anchored, or strapped to avoid falling or moving during an earthquake. For Tank
size over 52 Gallons (236l) consult your local building jurisdiction for appropriate
bracing designs.
Note: For Florida installation the Heat Pump unit should be installed in accordance
with all local codes regarding Hurricane winds.

Use appropriately treated lumber or pre-fabricated "pump ups" to raise the Heat
Pump unit 4"-6" from the ground – this will allow defrost condensate to drain. In
areas with significant snowfall ensure unit is mounted above the anticipated
snowfall depth.

A Pressure Relief (PR) valve MUST be installed during the installation of the tank
unit. This is installed in a defined point near the top of the tank unit. The PR Valve
must have clear drainage where escaping steam or water can flow freely. PR Valve
setting should be 100 Psig.

The installation site must be well drained so that any water accumulating (such as
rain or pipe leakage) will drain away and not enter the heat pump unit and the tank
unit.

Supply water pressure must be a minimum of 29 PSI (200 kPa) to ensure Heat
Pump unit operation – If pressure is below 29 PSI install a booster pump to water
supply.
Side view
2"or
more
Sanden Heat Pump – Installation Manual
Page 6 of 36
Caution
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: 16ft( 5 m) Max.
.