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.


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.

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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.

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LPG

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Checktheinstallationconditionsoftheunit.
Installationoftheunitinthefollowingplacescouldresult
inaccidentsorfailureandtheperformanceoftheunit
notbeingguaranteed.

∙Anywherethelowesttemperaturereachedisunder
minus4degreeFahrenheit
∙Indoors(Appliesonlytotheheatpumpunit)
∙Anywherenotcompletelyflat,unstableorwhere
drainageisdifficult
∙Ensurenottoputanythingaroundtheheatpumpunit.
Couldresultinpoorperformanceandunexpected
problems.
Inthewinterinparticularpleasepayattentiontoany
snowcoverage.

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Installation details
This Sanden Eco Hot water Heat Pump System must be installed by licensed personnel in
accordance with local building codes:
Installing contractor should be licensed by applicable state/province and municipal
authorities to install an Electrical & Plumbing product.
The unit has been designed for heating potable domestic hot water and any other
usage, such as space heating requires a heat exchanger suitable for local codes to
be installed on the system to separate potable and non-potable water.
The unit is designed to operate when connected to the water supply with a
maximum operating pressure of 95PSI (655 kPa). To ensure the mains pressure
does not exceed this, first check incoming cold water mains pressure, and then a
pressure regulating device must be connected to the water supply line.
This system delivers hot water exceeding 120
o
F (50
o
C).
Installation of a temperature tempering device is MANDATORY to avoid potential
scalds and burns.
The unit must be stored and transported in an upright position. Failure to do so may
render the unit faulty. Such failure is not covered under any warranty agreements.
Failure to comply with the above conditions will void the warranty.
Figure 2: Typical installation layout

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Trouble shooting guide
If you face a problem while using our Heat Pump water heater system, please check the
following table prior to calling for support.
For those problems not listed above, an inspection provided by a skilled engineer is
required. Please contact the distributor.
Caution:
Do not shut the electricity supplied to the Heat Pump system off even if you go away from
home and do not use hot water for a long while.
If the system is equipped with freeze protect heaters, also do not shut the power supply to
the heaters.
Failure to do so may cause a crack on the pipes due to the pipes getting frozen.
Status Considerable Causes Action to Take
No hot water
comes out of
water tap
Temperature
of hot water is
too low
Small or no hot water is left in
the storage tank.
- Stop using hot water and wait for about 1
hour
- Consider a change of the electricity
supply off-peak mode (Length of power-
supply hours may be too short for the
water heating cycle to cover the hot water
consumption)
Air removing procedure from the
heat pump system may be
insufficient.
- Open the water drain plugs on the Heat
Pump Unit to remove air from water circuit.
(Be careful for burning)
Filter on cold inlet connector may
be blocked. - Check the filter and remove if there is any blockage
Water flow speed may be
dropped due to the heat pump
piping bend, blockage or crush.
- Check for any piping bend or crush and
remove if any
Pipes may be frozen. - If frozen area is found on the piping, melt
the ice on the pipe and provide a heat
insulation
Stop valve is closed. - Open the valve
Air absorption is not sufficient
due to a blockage on the
evaporator.
-Remove the object blocking the air flow
through the evaporator
(e.g. fallen leaves, grass, snow, etc.)

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Error Codes
When an error has occurred, a red LED on the operation panel turns on and an error code
is displayed on the LED display. The panel does not turn to the display sleep mode while
the error code is shown.
Figure 3 Error Code example
Below is the list of the error codes. If the corrective action does not solve the error problem,
a malfunction of the PCB is highly likely.
Error
code Error contents Error code Error contents
E001 HP water outlet over
temperature 1 E015 HP ambient temperature thermistor wire break
E002 HP water outlet over
temperature 2 E016 Tank thermistor wire break
E003 HP outlet temperature
thermistor detection error E021 HP inlet temperature thermistor wire short circuit
E004 HP discharge over temperature
1 E022 HP outlet temperature thermistor wire short circuit
E005 HP discharge over temperature
2 E023 HP discharge temperature thermistor wire short circuit
E006 HP discharge temperature
Thermistor detection error E024 HP defrost temperature thermistor wire short circuit
E007 High pressure side error E025 HP ambient temperature
thermistor wire short circuit
E008 High ambient temperature
defrost drive error E026 Tank thermistor short circuit
E009 HP defrost thermistor detection
error E031 Fan motor locked
E011 HP inlet temperature thermistor
wire break E032 Fan motor revolution error
E012 HP outlet temperature
thermistor wire break E034 Water circulation pump locked
E013 HP discharge temperature
thermistor wire break
E040
～
E082 System control error
E014 HP defrost temperature
thermistor wire break

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Filling the System & Purging Air
The following steps must be taken to ensure all air is removed from the system.
Incorrect purging of air may cause the water temperature to vary during operation.
Ensure that all piping to tank unit and heat pump unit are installed and connections
are tight, then open the Cold Water Supply Valve to the system.
Push up the lever on the PR valve to open, and fill the tank unit with water.
Confirm that water comes out of the relief valve, and then close the lever.
Open the hot water faucets to remove air from the house piping system.
Close the faucets after no air is seen in the water.
Open the water drain plugs (two places) on the heat pump unit.
Close the plugs after no air is seen in the water.
Supply power to the heat pump unit and leave the hot water faucets open for 3
minutes. Close the faucet after no air can be seen in the water.
Figure 4: Air removal process

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Mains Power/Electrical Installation
All Electrical Wiring should be done in accordance with the latest edition of the
National Electrical Code (NEC) and all local State/Province and Municipality codes.
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 power.
A local disconnect should be installed adjacent to the Heat Pump unit in
accordance to NEC and local codes.
Installation of this system must be carried out only by a qualified installation
technician (electrical or plumbing).
Electrical connections
Breaker size and wiring must be sized per NEC rules for the rating plate amperage,
MCA and MOP or Max Circuit Breaker.
Power Supply is 208/230V-1Ph-60Hz
Verify that the tank unit is full of water and the
water shut off valves are open before turning on the
power.
How to connect Main Power
Remove the terminal block cover (Philips head screwdriver required)
Connect the power wiring to the terminal block per the wiring diagram/manual.
Ensure ground wire is connected.
Secure the power supply wiring below the terminal block with the screw clamp
fitting.
Attach the terminal block cover and piping cover back on the heat pump unit.

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Figure 5: Power connection
System operation using continuous power
The system runs its water heating cycle once a day to fill up the storage tank unit
with heated water.
If the block out time function is selected the unit will not operate during the block out
times – this function is typically used on installations that have time of use electricity
tariffs.
The water heating cycle operation starts automatically when the residual hot water
in the tank unit is less than 40 gallons (150 litres).
The system will not run if the electrical power supply is cut off (i.e. if it is connected
to demand response power). However, the system will automatically start operation,
once the electric power is restored.

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System operation if connected to Demand Response power
There are no special settings for the Demand Response. The system will run once
power becomes available and the temperature in the tank drops below the set point
of the tank thermistor.
If connecting the unit to Demand Response power, ensure that the off peak tariff
provides a minimum of 5 hours continuous power, as it can take at least four hours
to fill the tank unit with hot water.
If the ambient temperature is lower than 50
o
F (10
o
C) this can be longer.
If the unit is connected to Demand Response power and hot water consumption has
been higher than normal, hot water might not be available until the next power
supply cycle.
 Daily frequency and amount of hot water consumption may also affect the duration
of the heating cycle operation.
Select the electrical supply mode that best suits the customer’s hot water
consumption. The type of off-peak connection may need to be changed
if hot water supply is not maintained as required.
The basic system installation is now complete; the unit is now ready for initial filling,
air purge and then start up.
Check the Installation against the Installation Check list provided
at the end of this manual
Ensure that the work site is tidy; Sanden International recommends the use of Slim Duct or
Fortress product to cover water piping on the outside of the house
Figure 6: Outline of electrical system connections

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Water Supply Quality (Supplemental)
Chloride and PH
In areas with a high concentration of chloride in the water, that water can cause
corrosion and subsequent failures. Where the chloride level exceeds 0.1 ounces per
gallons (200 mg/litre), the warranty is no longer valid on to the heat pump unit and tank
unit.
PH is a measure of whether the water is alkaline or acid. In an acidic water supply, the
water can attack the parts and cause them to fail.
No warranty coverage is given on the heat pump unit and tank unit where the PH is
less than 6.0.
Supply Water with a PH less than 6.0 may be treated to raise the PH.
It is recommended that an analysis of the Supply Water be conducted before
connecting the Heat pump unit to the system.
Figure 7 Chlorides and PH
Change of water supply
Changing, or alternating, from one water supply to another can have a detrimental
effect on the operation and/or life expectation of the water tank unit cylinder, PR valve,
water heating circulation and the heat exchanger in the system.
Where there is a changeover from one water supply to another, for example, a
rainwater tank supply, desalinated water supply, public recirculated water supply or
water brought in from another supply, then water chemistry information should be
sought from the supplier or the water should be tested to ensure it meets the warranty
requirements in this installation manual.

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Technical data
Hot water storage tank unit
Material information
Storage tank material Stainless steel
Outside casing Colour coated zinc steel

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Stainless Steel Storage Tank Dimensions

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GS3-45HPA-US Dimensions
Specification
Refrigerant type R744(CO2)
Mass volume 22 oz. (650g)
Setting Outlet water temp 130～175°F
Product weight 106lb (48 kg)
Thermal capacity 4.5 kw
Fan motor FLA 0.3A , 70W
Water pump FLA 0.2A , 30W
Compressor RLA / LRA 7.5 / 9.8A
MCA 13A
Circuit Breaker Size 15A
Design Pressure(High / Low) 1885 /1059 PSI
Max inlet water temperature 110°F
Protection Raining Class IPX4
Max, Operating water Pressure 100PSI

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Warranty Policy
Warranty Conditions
1. The Sanden Heat Pump Water Heater System must be installed in accordance with the
installation instructions supplied with the Heat Pump Water Heater System, and in
accordance with all relevant statutory/localrequirements ofthe
state/province/municipality in which the water heater is installed.
2. Where a failed component or Heat Pump Water Heater System is replaced under warranty,
the balance of the original warranty period will remain effective. The replaced part or Heat
Pump Water Heater System does not carry a new warranty.
3. Where the Heat Pump Water Heater System is installed outside the boundaries of a
metropolitan area as defined by Sanden or further than 15 miles from an accredited service
agent, the cost of transport, insurance and travelling costs between the nearest accredited
service agent's premises and the installed site shall be the owner's responsibility.
4. Where the Heat Pump Water Heater System is installed in a position that does not allow
safe, ready access, the cost of accessing the site safely, including the cost of additional
materials handling and/or safety equipment, shall be the owner's responsibility.
5. The warranty only applies to the Heat Pump Water Heater System and original or genuine
(company) component replacement parts and therefore does not cover any plumbing or
electrical parts supplied by the installer and not an integral part of the Heat Pump Water
Heater System. Such parts would include pressure regulating valve, isolation valves, check
valves, electrical switches, pumps or fuses.
6. The Heat Pump Water Heater System must be sized to supply the hot water demand in
accordance with the guidelines in the Sanden Heat Pump Water Heater System literature.
7. This warranty is for parts only, any and all labor costs associated with diagnosis, removal of
the faulty part and installation of replacement parts will solely be the owner’s responsibility.
Warranty Exclusions
1. Repair and replacement work will be carried out as set out in the Sanden Heat Pump Water
Heater System warranty. However, the following exclusions may void the warranty and may
incur additional service charges and/or cost of parts.
2. Accidental damage to the Heat Pump Water Heater System or any component, including:
Acts of God, failure due to misuse, incorrect installation, attempts to repair the water heater
other than by a Sanden accredited service agent or the Sanden service department.
3. Where it is found there is nothing wrong with the HeatPumpWaterHeaterSystem;
where the complaint is related to excessivedischargefrom the temperature and/or the
pressure relief valve due to highwaterpressure; where there is no flow of hot water due
to faulty plumbing; where water leaks are related to plumbing and not the Heat Pump
Water Heater System or its components; where there is a failure of electricity or water
supplies; where thesupplyofelectricityorwaterdoesnotcomplywithrelevantcodesor
acts.
4. Where the HeatPumpWater HeaterSystemor its component has failed directlyor
indirectly as a result of excessive water pressure.
5. Overflow vent drain has not been installed or blocked or corroded.
6. Where the Heat Pump has rusted as a result of a corrosive atmosphere;

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cont.
7. Where the unit fails to operate or fails as a result of ice formation in thepipingtoor
from the Heat Pump Water Heater System.
8. Where the Heat Pump Water Heater System is located in a position that does not comply
with the HeatPumpWaterHeaterSysteminstallation instructions or relevant statutory
requirements, causing the need for major dismantling or removal of cupboards,
doors or walls, or use of special equipment to bring the Heat Pump Water Heater
Systemto floor or groundlevelor to a serviceable position.
9. Repair and/or replacement of the Heat Pump Water Heater System due to scale formation
above 200ppm (water hardness) in the waterways or the effects of either corrosive water or
water with a high chloride or low PH level when the waterheaterhasbeenconnected
to a scaling or corrosive water supply or a water supply with a high chloride or low PH
level as outlined in the Owner's Guide and Installation Manual.
10．Warranty service is provided to the original owner of the equipment only.
Subject to any statutory provisions to the contrary, this warranty excludes any and all claims
for damage to furniture, carpets, walls, foundations or any other consequential loss either
directly or indirectly due to leakage from the Heat Pump Water Heater System, or due to
leakage from fittings and/or pipe work of metal, plastic or other materials caused by water
temperature, poor Workmanship or other modes of failure.
11. Internet purchase
Any Sanden parts that are purchased on the internet are not eligible for the warranty term.
The parts must be purchased through Sanden certified distributors/contractors.
Warranty period
Subject to the Warranty Conditions and Exclusions stated above, your Sanden Heat Pump Water
Heater System is warranted in a Residential application as follows:
Heat pump unit – Sanden warrants all parts labor on the SANCO₂system for a period of
3 years from date of installation and a further 7 years on Parts only
excluding shipping costs. Labor costs are paid directly to the servicing
contractor per the payment cost schedule published by Sanden and
revised from time to time at Sanden’s requirement.
Tank unit – Sanden warrants that the tank will be free from defects for 10 years at
100% replacement, and for a further 5 years under a pro-rated scale,
culminating in warranty end after Fifteen years from date of installation

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Registration for warranty
In order to register your system for warranty purposes, please complete the details of your purchase
below, detach and mail to
Sanden International USA Inc.
47772 Halyard Dr. Plymouth, MI 48170
Name _________________________________
Mailing address ___________________________________________________State _________
Postcode _________________
Product Details:
Heat Pump Serial Number (from label on right end) ____________________________
Hot Water Tank Serial Number (label on tank) ________________________________
Date of Purchase/Installation ________/_______/20_____
Suppliers Name ________________________________________________________________
You may register your product via email, to ‘http://www.sanden.com/. Simply send an email
containing the same details as shown above
Please Note: Similar registration details will be provided to Sanden by your supplier/installer to
validate their claim for warranty support; it is essential that the dates of supply/installation
correspond to within one month.
SANDEN HEAT PUMP
40950-44672 Owner’s Manual US