KZN Solar GT-SKR010B, GT-SKR015B, GT-SKR020B, GT-SKR030B Instruction Manual

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Air Source Heat Pump Water Heater

Domestic Series

Instruction Manual

Model: GT-SKR010B

GT-SKR015B
GT-SKR020B
GT-SKR030B

◆ The instructions in this manual are for the use of qualified individuals specially

trained and experienced in the installation and maintenance of this type of equipment.

◆ Persons not qualified shall not attempt to install, service, or maintain this equipment.

◆ Please read the manual carefully before installation.

◆ Please keep this manual well for future reference.

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TABLE OF CONTENTS

Part I: General Information··················································································································3

Working Principle·························································································································4

Features of heat pump·················································································································5

Part II: Unit exploded view···················································································································6

Part III: Installation & Application········································································································7

Transportation····························································································································7

Installation Location requirement·······························································································7

Installation··································································································································7

Accessories································································································································8

Piping system·····························································································································8

Electrical connection···················································································································9

The specification of power ·········································································································10

How to install the temperature sensor to water tank··································································10

Trial operation····························································································································11

How to drain air··························································································································11

Part IV: Control System························································································································13

Part V: Maintenance······························································································································16

Part VI: Trouble shooting······················································································································17

Part VII: Wiring diagram························································································································19

Disposal········································································································································20

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Part I: General Information

1.1 Function description

Air source heat pump water heater is used to heat water for domestic hot water or commercial hot

water, etc.

1.2 Important Information

For your own security, and to ensure proper operation of the unit, this heat pump unit must be

installed and repaired by qualified technician, not consumer himself.

A leakage protection switch must be installed near the heat pump in an accessible place.

Do not use any damaged wires and switches, If found ( to be damaged), replace it immediately.

Do not open the electrical box without shutting off all power sources to the heat pump.

When transporting the heat pump, ensure that it is not upside down and not tilted more than 45°in

any direction.

Before performing any maintenance on the unit you must turn it off first and shut off the power to the

unit.

This unit is designed for outdoor installation, do not install it in an closed area.

Do not install the unit in places where there are any inflammable or explosive materials.

Do not restrict or block the air intake or outlet of the unit.

When the unit is not used for a long time, please switch it off and disconnect the power supply.
Drain the unit when ambient temperature is lower than 0℃

When power failure occurs and lasts for more than 5 hours with the ambient temperature lower than

2℃, please drain the unit to prevent the formulation of ice in it.

This appliance is not intended for use by persons (including children) with reduced physical,

sensory or mental capabilities, or lack of experience or knowledge, unless they have been given

supervision or instruction concerning use of the appliance by a person responsible for their safety.

Respect safety distance between the unit and other equipment or structures. Guarantee adequate

space for access to the unit for maintenance and/or service operations.

Power supply: the cross section of the electrical cables must be adequate for the power of the unit

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and the power supply voltage must correspond with the value indicated on the respective units. All

units must be earthed in conformity with legislation in force in the country concerned.

1.3 About heat pump

Heat Pump unit is a new technology and is regarded as the lastest generation among the various water

heating/cooling methods. It surpasses coal, electrical, gas and solar water heating, offering a better solution

for energy saving and environmental protection.

With the advantage of high energy efficiency ratio and pollution-free, heat pump is widely used all over the

world. Compared to electrical heating, consuming the same quantity of electricity, heat pump water heater

makes as 3～5 times of hot water as the former does.

1.4 Working principle

The basic principle of how a heat pump works is simple. Take air source heat pump for example, it works

just like air conditioner in cooling mode, however, in heating mode, the refrigerant flow is reversed and heat

is extracted from the outside air to heat your home. So the purpose of a heat pump is to absorb heat in one

place where it is plentiful, then to transport and release it in another location where it can be used for space

or water heating.

In order to absorb and release the heat into and from the refrigerant, we exploit the ability of the refrigerant

fluid to boil from a liquid to a vapor and then to condense back into a liquid. This is a continual process while

the compressor is running and circulating the refrigerant

1. The refrigerant in system extracts free heat energy from ourside air through fin-coil evaporator.

2. The refrigerant is compressed to a high-temp. & high-pressure gas by compressor.

3. Heat energy transferred to water through tube-in-shell heat exchanger.

4. The refrigerant in system restores to low-energy condition

5. The cycle is repeated.

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1.5 Features of heat pump water heater

1） Wide application

It can be widely used in villas, factories, schools, hospitals, hotels, restaurant, swimming pools and

spas, bath centers, laundries, etc.

2） More Safety

Water and electricity are completely isolated, No electric shock problem, more secure than traditional

electrical water heaters.

No fuel tubes and storage, no potential danger from oil leakage, fire, explosion, etc.

A full range of protection including compressor delay protection, water-pressure check switch, high &

low pressure protection, supper heating protection, Anti-phase and open-phase protection, high

temperature protection, etc.

3）Energy-saving

It provides the same amount of hot water at 1/4 cost of electrical water heaters, heat pump water heater

can save your bill every day.

4）Super-Sized evaporator coil

Hydrophilic aluminum fin and rifled copper coil, it has higher performance in cold weather.

5) High efficiency heat exchanger

6) World famous Compressor

It adopts the world famous brand compressor---“Copeland”, “Panasonic”, “Sanyo”, unmatched reliability,

quiet operation, energy-saving and environmental-friendly.

7）Monoblock design, convenient installation, nice appearance.
8）All-weather running

It supplies hot water no matter in a rainy day, snowy day or at night.

9）Running automatically

It is microcomputer controlled, with timer function, it can automatically start up and stop according to the

water temperature and other running conditions you set, no need for a supervisor.

10）Environmental friendly

Environment-friendly, free of pollutions, it reduces the global green house effect.

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Part II Unit Exploded View

20 Protection grid 10 Right panel

19 Wind circulation grid 9 Circulation water pump

18 Evaporator 8 compressor

17 Fan motor 7 High pressure switch

16 Fan 6 Rear panel

15 Front panel 5 Low pressure switch

14 Tube-in-shell heat exchanger 4 Four way valve

13 filter 3 Electronic expansion valve

12 Bottom sheet 2 Partition sheet

11 Electric box 1 Top panel