Water Piping Installation - Heat Pump Unit & Tank - Sanden GS3-45HPA-US Installation Manual

Note:
The entire system is set up and fully functional when supplied. Once all the water and
electric connections have been made, the system will operate automatically provided that
mains power is available.
The only adjustments to the unit are to set the desired hot water supply temperature & set
the current time on the operation panel under the top housing cover, especially if the block
out time setting is desired. See Set point adjustment, current time setting, and block out
time section on page 19.
Figure 5: Heat pump installation example and dimensions

Attach the drain elbow to the drain opening located on the bottom of the heat pump
unit. The drain elbow is included in the installation kit for the heat pump unit.

Attach a drain hose with 5/8 inch (16mm) of inner diameter to the drain elbow to guide
the drained water to an appropriate drain.
Water Piping Installation – Heat Pump Unit & Tank

All piping that connects to the water supply must be installed by a licensed contractor.

The water supplied to the system must comply with the potable water quality standard.
Use of water that does not comply with this standard could result in a malfunction of
the system.

Description PH
Maximum 6.0
Levels to
9.0

The water supply must have a pressure of 29 PSI (200 kPa) or higher.

A drain trap must be installed on the drain pipe if water is to be drained to a drain pan.
TDS Total
(Total Hardness
Dissolved (calcium Ion
Solids) concentration)
Up to Up to
500 ppm 200ppm or
12 grains
hardness
Sanden Heat Pump – Installation Manual
Aluminium Chlorides
Up to Up to
0.2 ppm 200
ppm
Page 7 of 36
Copper Iron Manganese
Up to Up Up to
1.0 to 0.05 ppm
ppm 0.3
ppm
Zinc
Up
to 5
ppm