THERMAL ARK ARK 270 Guide

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CONTENT
1. Preface ................................................................................................................................................... .3
2. Safety Precautions ...................................................................................................................................4
3. Specifications .........................................................................................................................................6
3.1 Appearance ..................................................................................................................................... ...6
3.2 Characteristics .....................................................................................................................................6
3.3 Operational Principle ...........................................................................................................................7
3.4 Dimensions .........................................................................................................................................7
3.5 Technical Data .....................................................................................................................................8
4. Installation ................................................................................................................................................9
4.1 Pipeline Connection Sketch..................................................................................................................9
4.2 Handling and Transportation ......................................................................................................
........10
4.2.1 Transport Using a Forklift .................................................................................................... ........10
4.2.2 Manual Transport ........................................................................................................................ 10
4.3 Recommended Household Size .......................................................................................................... 10
4.4 Installation Clearances ....................................................................................................................... 11
4.5 Cable Connection ............................................................................................................................... 13
4.5.1 Filling the Tank ............................................................................................................................ 13
4.6 Trial Operation ................................................................................................................................... 13
4.6.1 Inspection Before Trial Operation ................................................................................................. 13
4.6.2 Trial Operation ............................................................................................................................. 13
5. Operation .................................................................................................................................................. 14
5.1 Controller Button Descriptions ............................................................................................................ 15
5.2 Icon Descriptions ................................................................................................................................ 16
5.3 Turning the Unit ON and OFF ............................................................................................................. 17
5.4 Mode Selection .................................................................................................................................. 17
5.5 Target Temperature Checking and Setting ......................................................................................... 18
5.6 Time Setting ....................................................................................................................................... 18
5.7 Timer Setting ...................................................................................................................................... 20
5.8 Vacation Mode ................................................................................................................................... 23
5.9 Electric Element Boost Heater Setting ............................................................................................... 24
5.10 Fan Mode Setting ............................................................................................................................. 24
5.11 Keyboard Locking ............................................................................................................................ 25
6. . Maintenance and Repair .........................................................................................................................26
6.1 Maintenance ...................................................................................................................................... 26
6.2 Troubleshooting Guide .................................................................................................... ...................27
7. Appendix ................................................................................................................................................. 28
7.1 Unit Parameters ................................................................................................................................ 28
7.2 PCB Description ................................................................................................................... ...............28
7.3 Detailed Parts Overview .................................................................................................................... 29
7.4 Caution .............................................................................................................................................. 31
7.5 Earthing Methodology ......................................................................................................... ................31
7.6 Use of the P&T Valve .......................................................................................................................... 32
7.7 Use of the Overheating Protector ....................................................................................................... 32
7.8 Draining the Water Tank ...................................................................................................... ...............33
7.9 Warranty ..................................................................................................................................... .......34

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This manual includes all the necessary information regarding the installation, operation and
maintenance of the ARK 270 Heatpump. Please take the time to read and understand the contents
of the manual before operating and installing the unit.
The ARK 270 is the next evolution in water heating, with advanced energy efficiency technologies
and built in smart features to ensure you’re provided with clean, safe, and economical hot water all
year round. Unlike traditional hot water systems that use 1kW of energy to produce 1kW of heat,
the ARK 270 utilises that very same 1kW of energy and heat pump technology to generate ~ 4kW
of heat
–saving you up to 75% of your hot water costs!
-When installing the ARK 270, follow all instructions as documented in this manual.
-Once the installation is complete, check that all connections are secure before the power is
turned on.
-The installer is to explain to the end user how to operate and maintain the unit in
accordance with this instruction manual.
-ThermalArk will not be held responsible for any damages or injuries caused by the incorrect
installation of this hot water system.
-A maintenance programme must be carried out as recommended in this manual to ensure
ongoing reliability.
-Failure to comply with these recommendations could void the warranty and cause injury or
death.
-Due to continuous product improvement, this manual may be subject to change without prior
notice.
1.PREFACE

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To prevent personal injury and avoid causing damage to the unit, be sure to read the
information documented below.
2. SAFETY PRECAUTIONS

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3.1 Appearance
3.2 Characteristics
Smart and Efficient
The operational costs can be up to 75% less than that of an electric water heater, and can be
installed in locations which are unsuitable for solar hot water heating.
Safe and Environmentally Friendly
Produce no harmful gases along with no open flames, making the unit safe to work with when
installing.
Easy to Operate
Featuring an easy to use timer for both start and stop operations, with a controller to set the
desired water temperature.
3. SPECIFICATIONS

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3.3 Operational Principle
System Principle:
-Refrigerant is compressed into vapor with high temperature and high pressure when it goes
through the compressor.
-On the discharge side of the compressor, the now hot and highly pressurised refrigerant is
cooled down through the heat exchange with the water in the tank until it condenses into a
high pressure, moderate temperature liquid.
-Then the pressure of the liquid refrigerant drops as it passes the electronic EV throttling
device.
-Finally, the refrigerant absorbs the heat from the surrounding air and evaporates into vapor
with low temperature and low pressure, and then it goes into the compressor again.
-The cooled surrounding air could be blown to rooms which need fresh, cooled air.
3.4 Dimensions

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3.5 Technical Data

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4.1 Pipeline Connection Sketch
Connection explanation:
Installation of the water inlet or outlet pipes: The specification of the water inlet and outlet threat is
BSP3/4(internal thread). Pipes must be heat-resistant and durable.
Installation of the pipe for P&T valve: The spec of the valve connecting thread is BSP3/4(internal
thread). When the flexible drainpipe is joined to the pressure relief orifice of this valve, you must
ensure that the flexible drainpipe is pointing downwards and free draining.
ATTENTION
The P&T valve attached with the unit must be installed. Failure to do so will cause damage to
the unit and possible personal injury.
Do not use stainless steel fittings to connect directly with other metals to prevent galvanic
corrosion.
Drain the water tank through the drain plug at the bottom part of the unit.
4. INSTALLATION

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4.2 Handling and Transportation
As a rule, the unit should be stored and/or transported in its shipping container in an upright position
and without water charge. For transport over short distances, and provided due care is exercised,
an inclination angle of up to 30 degrees is permitted. During transport and storage, ambient
temperatures of -10 to +60degrees celcius are permissible.
4.2.1 Transport Using a Forklift
When transported by a forklift, the unit must remain mounted on the pallet. The lifting speed should
be kept to a minimum. Due to its top-heaviness, the unit must be secured against tipping over. To
prevent any damage or injury, the unit must be placed on a level surface.
4.2.2 Manual Transport
For the manual transport, the wooden pallet can be used for the bottom part. Using ropes of
carrying straps, a second or third handling configuration is possible. With this type of handling, care
must be taken that the maximum permissible inclination angle of 60 degrees is not exceeded. If
transport in an inclined position cannot be avoided, the unit should be left to rest at least one hour
after it has been moved into final position before operation.
4.3 Recommended Household Size
The recommendations are based on heat pump only
mode.
Higher occupancy levels are able to be achieved with
the electric element boost heater activated.
Household Size Model
Up to 6 People ARK 270
Notice: High usage of hot water and other factors could affect this recommendation. Please
consult your supplier if you have special requirements.
CAUTION: High centre of gravity, place on a level surface!

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4.4 Installation Clearances
Before installation, ensure that you leave the space as shown for maintenance.

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The ARK 270 is designed for external installation; however if possible, installing the system under
the house eave or in a sheltered environment may help prolong the life of the system.
1. The unit must be installed, operated and maintained in good order and accordance with these
instructions.
2. If the water supply exceeds rated pressure a pressure reducing valve is to be fitted.
3. Water may discharge from the drain pipe and this must be left open to the atmosphere.
4. The pressure relief valve must be operated at least every 6 months to ensure correct
operation. The drain pipe from this valve should not allow water to collect in pipework.
5. Facilities for draining and filling the unit must be provided to maintenance. Drain points must
be at the lowest point of the system.
6. Check before installation that your water pressure is within required limits. Use a filter and
pressure relief valve on the inlet as required. A water softening device will also be required in
hard water areas.
7. This heat pump must be installed by a licensed contractor. Do not attempt to install yourself if
you are not qualified. The ARK 270 must be installed to conform to all relevant Australian
Standards and Industry Codes including but not limited to:
a. Electrical and Electrical Safety
b. Plumbing and Hot Water Storage
c. Heat Pump Installation and Operation
Installation must also comply with any local, state or federal codes at the installation site.
Failure to comply can void your warranty, damage your unit and cause possible injury or
death.
Plumbing must comply with AS/NZS3500.4

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Indoor Installation Recommendations:
Heat pumps operate most efficiently with warmer air temperatures, and the outlet air from the unit will
always be colder than the inlet air. Therefore it is advisable to install the unit so it receives the warmest air
temperatures possible and that the cold air is not able to recirculate back into the unit.
The unit may be able to be installed in an unventilated room exceeding 25m3 in volume.
Venting of cold air is always advisable to prevent the air temperature dropping and lowering the efficiency of
the unit.
Think of the unit as a 3kW air conditioner for the effect it will have on a closed room.
To cool the room using the ARK 270:
Install the unit so the outlet from the heat pump is blowing INTO the room. The room MUST have some form
of air outlet otherwise the performance of the unit will suffer significantly.
To maintain the room at normal temps using the ARK 270:
Install the unit so the outlet from the heat pump is blowing OUTSIDE the room. The room MUST have some
form of air inlet otherwise the performance of the unit will suffer significantly.
4.5 Cable Connection
The power cable is stored in the back of the unit, its for power supply of the unit. The spec of the cable is
AWG12.
The unit required an isolating switch as required by local laws.
If the power cord is damaged, it must be replaced by a qualified electrician.
4.5.1 Filling the Tank
Open a hot water tap inside the house
Open the cold-water inlet valve into the ARK 270 to fill the tank. When water begins flowing out of the hot
water tap inside the premises, turn off the hot water tap.
4.6 Trial Operation
4.6.1 Inspection Before Trial Operation
Check the water supply to the tank and pipe connections for possible leaks.
Check that the following devices are installed and operating correctly:
-Drain pipes
-P&T Valve
-Filter on inlet
-Water softening and pressure reducing devices if required.
Check that all power connections are secure before switching on.
Check that the installation space is adequate.
4.6.2 Trial Operation
Switch on the unit using the controller.
In the case of any unusual noise, switch the power off and consult your provider.
The parameters have been pre-set to a temperature off 55 degrees. Check that the unit is operating by looking
for an increase in water temperature over time.

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HEATING CAPACITY:
In low ambient conditions the heating output decreases.
3 MIN SAFETY PROTECT:
If the unit stops and you restart the unit or turn it on manually, the unit will not start to run again for
approximately 3 minutes. This is a protection feature to safe guard the compressor.
DEFROSTING:
In heating mode the unit will defrost automatically, maximising the heating efficiency (lasting
2-10 minutes). The fan motor will stop running whilst the unit is defrosting.
WORKING CONDITIONS:
In order to use the unit correctly, please run the unit at environment temperature -7 -43
The unit includes sophisticated electronic devices, do not use water from a lake, untreated river
water, groundwater and other unsafe water sources!
OVERHEATING PROTECTION:
When the water temperature reaches 75°C, the power of the unit will be cut and must be manually
reset.
WATER TEMPERATURE OR PRESSURE PROTECTION:
A P&T valve MUST be installed in the tank. When the tank pressure reaches 0.85MPa or when
the tank temperature reaches 93°C, the P&T valve will open automatically so as to reduce the
pressure or temperature decrease.
HIGH TEMP SANITISATION:
The ARK 270 is fitted with Leogenella Mode. The Leogenella Mode will heat the tank water to 60°C
for one 30 minute period every week at midnight. Please be aware of very high temperature water
outlet at this time.
COMPRESSOR PROTECTION MODE:
The following controls are used to prevent over pressurising the refrigerant system.
Ambient temperature less than -5C compressor will stop and electric element will be used to
reach target temperature setpoint. If the target water temperature is set greater than 55C the
following protections apply
- Ambient temperature between -5C and 5C the compressor will stop when water temperature
reaches 55C and the electric boost element will be used to reach target temperature
- Ambient temperature ranges greater than 30C the compressor will stop when water temperature
reaches 55C and the electric boost element will be used to reach the target element
5. OPERATION

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5.1 Controller Button Descriptions

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5.2 Icon Descriptions

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5.3 Turning the Unit ON and OFF
5.4 Mode Selection

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5.5 Target Temperature Checking and Setting
5.6 Time Setting
Mode Descriptions:
Eco Mode:
This mode does not use Electric Element Boost and is the most economical mode. Start with this
mode initially and if you encounter water which is cold or warm switch to Intelligent mode.
Intelligent Mode:
This mode analyses ambient temperature at 10am each day and decides the best operating mode
from Eco or Heating
High Heating Mode:
This mode uses the heat pump as the main heat source. The Electric Element Boost starts after 40
min delay to give high recovery rates. Use this mode if you have very high hot water usage. The
Electric Element Boost start times and temps are all fully customisable
You can also manually switch on the Electric Element Boost at any time by pressing the Electric
Element Boost button on the controller.
Setting the timer to allow the unit to run for longer periods will also help to ensure you never run out
of hot water

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5.7 Timer Setting