Sanden GS3-45HPA-US User manual

SandenHeatPump–Owner’sManual
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Page title
Covering model numbers for residence
Heat Pump Unit GS3-45HPA-US
This appliance is not to be installed by unqualified and
unlicensed persons, please read and understand this manual
prior to installing and operating the unit.
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Owner’s manual

SandenHeatPump–Owner’sManual
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Contents
Page title…………………………………………………………………………………………… 1
Contents ..............................................................................................................................2
Introduction..........................................................................................................................3
How it works ........................................................................................................................3
Installation details................................................................................................................7
Trouble shooting guide ........................................................................................................8 
Error Codes .........................................................................................................................9
Filling the System & Purging Air ........................................................................................10
Mains Power/Electrical Installation ....................................................................................11
Electrical connections........................................................................................................11
How to connect Main Power..............................................................................................11
System operation using continuous power ........................................................................12
System operation if connected to Demand Response power ............................................13
Water Supply Quality (Supplemental)................................................................................14
Change of water supply.....................................................................................................14
Technical data ...................................................................................................................15
Warranty Policy..................................................................................................................18
Registration for warranty....................................................................................................20
PATENTS
This water heater may be protected by one or more patents or registered designs
in the name of Sanden International (USA), Inc.
TRADE MARKS
® Registered trademark of Sanden International (USA), Inc.
Note: Every care has been taken to ensure accuracy in preparation of this publication.
No liability can be accepted for any consequences that may arise as a result of its application. Sanden is in a
process of continuous improvement with, therefore specifications may be different to those referenced in this
manual – Please contact Sanden International or it’s distributors for the latest specifications at the time of install.

SandenHeatPump–Owner’sManual
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Introduction
The Sanden Sanco
2
Heat Pump Water Heater System has been designed using the latest
refrigeration technology to remove the heat from the air to heat water. The refrigerant used
is CO
2
which does not contribute to global warming so it allows us to help keep a clean
healthy earth for future generations.
We have also considered the power requirement. By using CO
2
as the refrigerant, we have
produced one of the most energy efficient units currently available. It is even more efficient
when connected to demand response power and the noise level is so low it will operate
unobtrusively throughout the night.
How it works
The Sanden Sanco
2
Heat Pump Water Heater System heats water by transferring the heat
from the surrounding air to the water using a refrigerant. The refrigerant is heated by a
heat exchanger that absorbs heat from the surrounding air (Figure 1).
Figure 1: Heat Pump Water Heater System
Note:
The unit must have a minimum of 5 hours continuous power available at all time to allow
the unit to operate without affecting reliability.

SandenHeatPump–Owner’sManual
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LPG