Cool Energy inverTech Monoblock Series User manual

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Cool Energy inverTech Manual v6.6 2020 ©
Cool Energy inverTech Monoblock Series
Heat Pump Water Heaters
Version 6.6
Installation and Users Guide
IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL INSTRUCTIONS
RETAIN FOR FUTURE REFERENCE
Customer Service and Technical Support
Phone: [phone]
Email: [email protected]
Website: www.heatingshop.ie

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Table of Contents
IMPORTANT SAFETY PRECAUTIONS....................................................................................................... 3
Health and Safety ………………............................................................................................................ 3, 4
Important End User Safety Information........................................................................................... 4
Section 1.................................................................................................................................. 5
Introduction.................................................................................................................................................. 5
Product Overview............................................................................................................................. 5
General Features.............................................................................................................................. 5
Section 2.................................................................................................................................. 6
Installation..................................................................................................................................................... 6
Materials needed for installation...................................................................................................... 7
Installation of Outdoor Unit.............................................................................................................. 7, 8
Suggested Installation Methods............................................................................................... 9, 10, 11, 12, 13
Water Connections............................................................................................................................ 14
Plumbing Installation Requirements................................................................................................. 14
Electrical Connections....................................................................................................................... 15
General Information.......................................................................................................................... 15
Electrical Wiring Diagram.................................................................................................................. 16, 17
Power Supply.................................................................................................................................... 18
Grounding and Over Current Protection.......................................................................................... 18
Section 3.................................................................................................................................. 19
Operating Heat Pump................................................................................................................................... 19
LCD User-Friendly Interface Controller............................................................................................. 19
General Instruction........................................................................................................................... 19
Controller Panel................................................................................................................................ 19
Operating Controller ........................................................................................................................ 19
1. Keys / Icons Explanation............................................................................................................. 19
2. System Status Display Value....................................................................................................... 19
3. On/ Off Setting............................................................................................................................ 20
4. Mode Setting...............................................................................................................................20
5. Time / Clock Setting………............................................................................................................ 21
6. Engineer Settings………................................................................................................................ 22,23
7. Input / Output Readings………………………………………………………………………………………………………… 24
8. Weather Compensation………………………………………………………………………………………………………… 25,26
General Operating Guide............................................................................................................................... 27
User Guide...................................................................................................................................................... 28
Product Protection................................................................................................................................ 28,29,30,31,32
Section 4................................................................................................................................... 33
Commisioning………….................................................................................................................................... 33
Service & Maintenance................................................................................................................................. 33
Inspection and Service...................................................................................................................... 33
Owner Inspection.............................................................................................................................. 34
Section 5................................................................................................................................... 35
Benchmark…..................................................................................................................................... 35
Commissioning Checklist…................................................................................................................ 35
Service Record……………..................................................................................................................... 36

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HEALTH AND SAFETY INFORMATION
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INFORMATION FOR INSTALLER AND SERVICE ENGINEERS
Under the Consumer Protection Act 1987 and the Health and Safety at Work Act 1974, it is required to provide
information on substances hazardous to health (COSHH Regulations 1998).
Cool Energy takes every reasonable care to ensure that these products are designed and constructed to meet these
general safety requirements, provided they are properly installed and used.
To fulfil this requirement, products are comprehensively tested and examined before dispatch.
When working on the appliance, it is the responsibility of the user/engineer to ensure that any necessary personal
protective clothing or equipment is worn when appropriate for parts, which could be considered hazardous or
harmful.
This appliance may contain some of the items below:
Refrigerants
The appliance contains R410a refrigerant. The constituents of R410a are R134a, R32 and R125 all of which have low
toxicity levels.
When handling, avoid inhalation and contact with the skin and eyes. Suitable personal protective equipment (PPE)
must be worn (gloves, overalls, eye protection) and a comprehensive first aid kit (containing eyewash) should be
easily available.
Site engineers should have a certificate of competence and should know and understand the properties and hazards
before handling liquid refrigerants.
When the appliance has come to the end of its life span, an approved engineer must dispose of the equipment and
refrigerants in accordance with the EU laws.
Seek urgent medical attention if in haled or digested. Exposure to eyes and skin should be followed by immediate
cleansing of the affected areas and medical attention if necessary.
Insulation
Fibre insulation may be irritating to the skin, eyes, nose and throat. When handling, avoid inhalation and contact
with the eyes. Use disposable gloves, facemasks and eye protection.
After handling, wash hands and other exposed parts. When disposing, reduce dust with water spray and ensure all
parts are securely wrapped.
Glue, Sealants and Paints
Glue, sealants and paints are used in this appliance and present no known hazards when used in the manner of
which they are intended.
Oils
The compressor contains FV50S oil within the refrigeration system. The compressor itself is hermetically sealed, and
this cannot be repaired.
Manual Handling
Air Source Heat Pumps are by nature bulky and heavy items.
Please pay attention to the weight of the unit before attempting
to move it. It may be necessary to use lifting aids to ensure
safe manual handling to avoid injury.
The weight of the heat pumps can be found on data sheets,
packaging and product data badges.

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Transport of Heat Pump
When transporting your heat pump its important to keep it upright.
The refrigeration system inside contains oil, gas and liquids which can be disturbed when
moving your heat pump. If at any stage during transporting your unit it is inclined more
than a 45° angle, its important to leave the unit upright for at least 4 hours to allow the
refrigeration system to stabilise again before use.
IMPORTANT SAFETY INFORMATION FOR THE END-USER
•Installation of the appliance must only be carried out by persons with suitable competence.
•Do not attempt to modify, repair or service the appliance yourself.
•Do not insert body parts or any other items into the air inlet or outlet.
•Do not start or stop the unit by removing the power cable; always use the controls and switches
provided.
•If installed outside, ensure the appliance is protected from prolonged exposure to large quantities
of water.
•Do not operate the unit or the programmer with wet fingers.
•Keep the programmer unit of out of reach of children.
•The electrical supply must be isolated during a heightened risk of lightning strikes.
•Do not attempt to move the appliance once it is installed; this must be carried out by a qualified
engineer.
•Isolate the electrical supply to the appliance if an odour presents, or scorching is detected.
•Only use this appliance for the purpose intended.
•Ensure the area around the appliance is clean, well-ventilated and kept free of all obstructions.
•Do not keep items on top of the appliance or use it to support other appliances.
•Do not under any circumstances stand on the appliance.
•Isolate the electrical supply to the appliance if it is to be switched off for a period of more than two
months.
•Periodically check the condition of any supports for deterioration.
•Do not wash the unit with water, alcohol, benzene, thinner, glass cleaner or powders.
•During cleaning, isolate the electrical supply to the appliance.

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Section 1
Introduction
Product Overview
Air Source Heat Pumps transfer heat from the ambient air to water, providing high-temperature hot water up to
60°C. The unique Cool Energy inverTech heat hump is widely used for house heating or hot water.
With our innovative & advanced technology, the pro mono block range of heat pumps can operate very well down
to -20°C ambient temperature with high output temperatures up to 60°C. Compared with traditional Oil / LPG
boilers, Cool Energy heat pumps produces up to 50% less CO² whilst saves up to 80% on running costs. Cool Energy
heat pumps are not only highly efficient, but also easy and safe to operate.
General Features
1. Low running costs and high efficiency.
•A high coefficient of performance (COP) of up to 5, results in lower running costs compared with
traditional ASHP technology.
•No immersion heater supplement is required.
2. Reduced Capital Costs.
•Simple installation
•Compatible with traditional radiator systems, under floor heating or fan coils.
3. High Comfort Levels.
•High storage temperature results in increased hot water availability.
4. No potential danger of any inflammable, gas poisoning, explosion, fire, electrical shock which are associated
with other heating systems.
5. A digital controller is incorporated to maintain the desired water temperature.
6. Long-life and corrosion resistant composite cabinet stands up to severe climates.
7. The latest compressor technology ensures outstanding performance, ultra-energy efficiency, durability and
quiet operation.
8. Self-diagnostic control panel monitors and troubleshoots heat pump operations to ensure safe and reliable
operations.
9. Intelligent digital controller with friendly user interface and blue LED back light.
10. Separate isolated electrical compartment prevents internal corrosion and extends heat pump life.
11. The heat pump can operate down to ambient air temperature of –20°C.

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Section 2
Installation
The following general information describes how to install the air source heat pump.
Note: Before installing this product, read and follow all warning notices and instructions. Only a qualified /
competent person should install the heat pump.
Materials needed for Installation:
The following items are needed and are to be supplied by the installer for all heat pump installations:
1. Plumping fittings.
2. Level surface with provision for condensate drainage.
3. Suitable anti-vibration feet.
4. Ensure that a suitable electrical supply cable is provided. See the rating plate on the heat pump for electrical
specifications. Please take a note of the specific current rating. No junction box is needed at the heat pump;
Connections are made inside of the heat pump electrical compartment. Conduit may be attached directly to
the heat pump casing.
5. It is advised to use PVC conduit for the electrical supply cables.
6. Ensure correctly sized pipe work to obtain minimum water flow rates required.
7. Flexible hoses are recommended for connection between heat pump and rigid pipework.
8. A filter on the water inlet to the heat pump is required.
9. The plumbing should be insulated to reduce heat losses, and water treated with a suitable inhibited
antifreeze.
Note: We recommend installing shut-off valves on the inlet and outlet water connections for ease of serviceability.

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Note: For detailed specifications of the units please refer to name plate on the units.
Correct installation is required to ensure safe operation. The requirements for Cool Energy heat pumps include the
following:
1. Appropriate site location and clearances.
2. Wiring to conform to 18th edition wiring regulations.
3. Adequate water flow. (See Page 31.)
This manual provides the information needed to meet these requirements. Review all application and installation
procedures completely before continuing the installation.
Installation of Outdoor Unit
The heat pump should be installed on a solid level base that can take the weight, preferably a concrete foundation.
If concrete slabs are used, they must rest on asphalt or shingle.
The heat pump should not be positioned next to sensitive walls, for example, next to a bedroom. Also ensure that
the placement does not inconvenience the neighbours. The heat pumps must not be placed so that recirculation of
the outdoor air can occur; this causes lower output and impaired efficiency.
Large amounts of condensation water as well as melted waters from defrosting can be produced. Condensation
water must be led off to a drain, soakaway or similar.
The outdoor unit should be installed in a ventilated place, with enough space for air inlet and outlet, while without
thermal radiation or other heat source. The air outlet should not be against the wind.
Generally, horizontal air flow type heat pump does not generally need sheltering. The structure design has protected
all internal components against rain and sunshine. A shelter is necessary to avoid snow burying
the heat pump in heavy snow areas.
Please make sure the standardized voltage 220V-240V is available to the heat pump, otherwise
the performance would be influenced and could affect your warranty.
The foundation of the heat pump can be a cement or steel structure. Anti-vibration rubber feet
and a flat foundation are generally required. The foundation structure can be flexibly designed
according to the working weight of the heat pump. (Please see the technical data in this
manual.)
Water drainage should be available near the installation location for draining water in an
effective way. Do not install the heat pump in a place where there is polluting or corrosive
materials like oil, flammable and explosive gas and sulphide ect. Keep it far away from sands,
falling leaves and area with high-frequency equipment.
Installation on a balcony or on a roof-top must be in accordance with the allowable stress of the
building structure.

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The installation space should be referred as follows:
Intake and outlet should not be obstructed. The wall the unit is to be mounted on should be strong enough to bear
the weight and vibrations of the unit.
Allow for proper clearances around the unit. Location should allow easy access for maintenance.
For any further guidance on heat pump installations for planning purposes, please consult the latest version of the
MCS guidelines or your local authority.

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Example Installation Method 1: - Heating only with radiators

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Example Installation Method 2: - Heating only with radiators

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Example Installation Method 3: - Heating Only with Underfloor & Radiators

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Example Installation Method 4: - Hot Water / Thermal Store Only

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Example Installation Method 5: - Hot Water & Heating

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Water Connections
Water connections at the heat pump
Flexible pipe fittings are recommended to be installed on the flow and return connections.
The water inlet and outlet connections to the heat pump, accept standard BSP threaded fittings.
CAUTION –Make sure that the required water flow rates can be maintained at all times.
Plumbing Installation Requirements
1. Water pressure should not exceed 3 Bar.
2. Each part connected to the unit needs to be connected with method of loose jointing and installed with
intermediate valves.
3. Ensure that all plumbing has been properly flushed and tested. (See Page 31.)
4. All pipelines and pipe fittings must be insulated to prevent heat losses.
5. Install a drain valve at the lowest point of the system to enable the system to be drained fully.
6. Install a check valve on the water outlet connection if back siphoning could occur.
7. In order to reduce the back pressure, the pipes should be installed horizontally.
8. Minimum flow rates detailed on the date badge must be maintained and could void warranty and damage
unit if they are not.

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Electrical Connections
WARNING –Risk of electrical shock or electrocution.
Ensure that all high voltage circuits are disconnected before commencing heat pump installation. Contact with these
circuits could result in death or serious injury to users, installers or others.
CAUTION –Label all wires prior to disconnection when servicing the heat pump. Wiring errors can cause
improper and dangerous operation. Check and ensure proper operation after servicing.
General Information
Wiring connections must be done according to the wiring diagram found on the inside of the heat pump access
panel or see addendum A for reference.
The heat pumps must also be earthed. A ground lug is provided on the inside of the heat pump electrical
compartment.
The supplied controller is pre-wired using a low voltage low loss cable and can be easily moved and located where
required.
The controller plugs directly onto the cable supplied with no additional wiring required.
If you wish to extend this cable or any of the sensor cables, please use a shielded low loss cable.
Circuit Breaker Sizing:
CE-iVT9 –20a Type C MCB / RCBO
CE-iVT18 –32a Type C MCB / RCBO
CE-iVT18 3PH –16a Type C MCB / RCBO
CE-iVT26 3PH –20a Type C MCB / RCBO
CE-iVT32 3PH –32a Type C MCB / RCBO

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Wiring Diagrams
Single Phase inverTech Models:

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3 Phase inverTech Models:

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Power Supply
1. If the supply voltage is too low or too high, it can cause damage and/or result in unstable operation of the
heat pump unit, due to high in rush currents on start up.
2. The minimum starting voltage should be above 90% of rated voltage. The acceptable operating voltage
range should be within ±10% of the rated voltage. When heat pump units are installed in parallel, ensure
that the voltage difference, between these units, is within ±2% of each other. The voltage difference
between phases of a three-phase power supply should be within ±2%.
3. Ensure the cable specifications meet the correct requirements for the specific installation. The distance
between the installation site and the mains power supply will affect the cable thickness. Follow the 17th
edition wiring regulations to select the cables, circuit breakers and circuit breakers.
Earthing and Over Current Protection
In order to prevent electrical shock in case of leakage from unit, install the heat pump according to current electrical
wiring regulations.
1. Do not frequently interrupt the voltage supply to the heat pump as this may result in a shorter life
expectance of the heat pump.
2. When installing over current protection, ensure that the correct current rating is met for this specific
installation.
3. The compressor, fan coil unit and heat pump water pump all have AC- contactors and thermo relay
protection. Therefore, in the process of installation and debugging, firstly measure each of the components’
current, and then adjust the current protection range of the thermo relays.

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Section 3
Operating Your Heat Pump
Carel LCD User-Friendly Interface Controller
General Instructions
The Carel operation panel features:
1. Touch keys for higher operating sensitivity and unlimited key operations.
2. Minimal electromagnetic susceptibility and interference.
3. Stylish appearance of easy viewing purposes.
Controller Panel
Operating Controller
Keys Explanation:
Icons:
Heating mode / Pump / Compressor / Fan / Defrost Cooling mode
Buttons:
Alarm / Exit / Menu & Confirm / Select / Settings

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Controller Set-Up
1. On / Off Setting:
Press to access menu
Use ↑↓buttons to select Unit On / Off setting
Press to confirm selection
Use ↑↓Buttons to select On / Off mode
Press to confirm.
2. Mode Selection:
Modes Available - Heating / Hot Water / Cooling / Heating + Hot Water / Hot Water + Cooling
Ensure unit is in Off mode first
Press to access menu
Use ↑↓buttons to select User Mask
Press to confirm selection
Press ↑↓Button to switch mode
Press to confirm