Glow-worm Envirosorb 8, Envirosorb 10, Envirosorb 14 Installation Instructions Manual

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Page 1

Installation Instructions

www.glow-worm.co.uk

Air / Water Heat Pump

Envirosorb

Envirosorb 8

Envirosorb 10

Envirosorb 14

psi b

Page 2

Thank you for installing a new Glow-worm appliance in your home.

Glow-worm appliances are manufactured to the very highest standard so we are pleased to offer

our customers a Comprehensive Guarantee.

This product is guaranteed for 24 months from the date of installation or 30 months from the date

of manufacture, whichever is the shorter, for parts and labour.

The second year of the parts guarantee, from the beginning of the 13th month onwards after

installation or manufacture, is conditional upon the heat pump having been serviced by a

registered installer,

in accordance with the manufacturer’s recommendations. We strongly recommend regular

servicing of your appliance, but where the condition is not met, any chargeable spare parts or

components issued within the applicable guarantee period still benet from a 12 month warranty

from the date of issue by the manufacturer.

We recommend you complete and return as soon as possible your guarantee registration card.

If your guarantee registration card is missing you can obtain a copy or record your registration by

telephoning the Glow-worm Customer Service number 01773 596510.

Guarantee Registration

Customer Service:

01773 828100

Technical Helpline:

01773 828300

General and Sales enquiries:

Tel. 01773 824639

Fax: 01773 820569

Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are provided with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance with the manufacturer’s instructions by competent persons and that it meets the requirements of the appropriate Building Regulations. The Benchmark Checklist can be used to demonstrate compliance with Building Regulations and should be provided to the customer for future reference. Installers are required to carry out installation, commissioning and servicing work in accordance with the Benchmark Code of Practice which is available from the Heating and Hotwater Industry Council who manage and promote the Scheme. Visit www.centralheating.co.uk for more information.

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CONTENTS DESCRIPTION SECTION PAGE

Warnings 4 Important Information 4 Statutory Requirements 5 Safety Regulations and Provisions 6 Safety Devices 6 Servicing, Maintenance and Spare Parts 7 Data Plate 7

Heat pump explained 1 8 Technical data 2 9 Heat pump circuits 3 11 Installation 4 13 Hydraulic Schematic 5 17 Plumbing 6 22 Wiring 7 23 Filling the Heating Circuit 8 27

Conguration 9 28

Settings 10 31

Operational Safety Procedures 11 33 User Information 12 36 Replacement of Parts 13 36 Servicing 14 37 Main Circuit Board 15 38

INTRODUCTION

INSTALLATION

MAINTENANCE

The instructions are an integral part of the appliance and must be handed to the user on

completion of the installation.

Page 4

Metal Parts

This appliance contains metal parts (components) and care should be taken when handling and cleaning, with particular regard to edges.

Sealed Components

Under no circumstances must the user interfere with or adjust sealed parts.

Control of Substances Hazardous to Health

Under Section 6 of The Health and Safety at Work Act 1974, we are required to provide information on substances hazardous to health. The adhesives and sealants used in this appliance are cured and give no known hazard in this state. The refrigerant used in this appliance is R410a the use of which is strictly controlled by F Gas regulation EN842/2006.

Manual Handling

With regards to the “Manual Handling Operations, 1992 Regulations”, the appliance exceeds the recommended weight for a one man lift, refer to Technical Data for more information. The handling of the appliance may involve lifting, pushing and pulling, the use of a sack truck may be required. The following handling techniques and precautions should be considered:

- Grip the appliance at its base

- Be physically capable

- Use safety clothing where appropriate, e.g. gloves, safety footwear. Ensure safe lifting techniques are used

- Keep back straight.

- Avoid twisting at the waist.

- Avoid upper body/top heavy bending.

- Always grip using the palm of the hand.

- Use designated hand holds if applicable.

- Keep load as close to body as possible.

- Always use assistance if required.

Electrical Supply

The appliance MUST be earthed. All system components shall be of an approved type and all wiring to current I.E.E. wiring regulations.

External wiring must be correctly earthed, polarised and in accordance with the relevant standards. In GB, this is BS 7671. In IE, this is the current edition of ETCI rules. The appliance MUST be connected to a permanent 230V ac, 50Hz supply. Connection of the whole electrical system of the appliance, including any heating controls, to the electrical supply MUST be through one common isolator and must be fuse protected in accordance with BS7671 - see section 8. Isolation should be by a double pole switched isolator

adjacent to the appliance. It should be identied as to its use.

Wiring to the appliance must be appropriately sized and suitable for the application in accordance with BS7671.

This appliance is tested and certicated for safety and

performance. It is, therefore, important that no alteration is made to the appliance, without permission, in writing, by Glow-worm. Any alteration not approved by Glow-worm, could invalidate

the certication, appliance warranty and may also infringe the

current issue of the statutory requirements. We cannot accept any responsibility for damages arising from failure to follow the instructions contained in this manual.

All the illustration dimensions in the manual are expressed in mm.

Retention of the documents

Please supply all of these documents to the appliance user. The user must keep these documents for future consultation.

The warranty activation application must be sent to Glow-worm by the Installer or the Authorised heat pump Technician accompanied by the completed commissioning report sheet.

Support documents

The commissioning request form (obtainable from G-w Group Service - tel 01773-828300)

The commissioning template to be completed by the commissioning engineer)

Warranty sheet to be lled out by the installer or the

Authorised heat pump Technician.

WARNINGS

Metal Parts

This air/water heat pump contains metal parts (components) and care should be taken when handling and

cleaning, with particular regard to edges.

Sealed Components

Under no circumstances must the user interfere with or adjust sealed parts.

Refrigerants

The air/water heat pump unit contains pressurised refrigerants, only qualied persons should work on this

system and under no circumstances should these refrigerants be discharged to atmosphere.

Important Information

Page 5

CE marking

The CE marking shows that the appliances described in this manual are in compliance with the following directives:

Directive relating to electromagnetic compatibility – (Council of the European Communities directive 89/336/EEC).

Directive relating to electrical equipment designed for use within certain voltage limits (Council of the European Communities directive 73/23/EEC).

Directive relating to pressure equipment – (Council of the European Communities directive -97/23/EEC).

Directive relating to machinery (Council of the European Communities directive 89/392/EEC).

Under CE directive these appliances are approved and tested to EN14511 parts 1 to 4

IMPORTANT

Where no British Standards exists, materials and equipment

should be t for their purpose and of suitable quality and

workmanship. The installation of this appliance must be carried out by a competent person in accordance the rules in force in the countries of destination. Manufacturer’s instructions must not be taken as overriding statutory requirements.

Safety instructions

Any work carried out within the appliance must be conducted

by a certied professional in accordance with current

regulations (handling refrigerants, live electrical work etc.) or the Glow-worm Post-Sales Service.

WARNING There is the risk of electric shock and damage to the equipment if it is not installed correctly.

WARNING The refrigerant circuit may only be worked by a

qualied specialist.

When assembling the connectors, ensure that the watertight joints are positioned correctly in order to avoid any leaks.

Do not, under any circumstances, disable any of the safety devices and do not attempt to manhandle these devices or you will run the risk of causing a malfunction.

The following safety instructions must be adhered to when the appliance is being serviced or when any parts are being replaced.

Shut the appliance down.

Isolate the appliance from the electricity supply:

- either by unplugging the appliance,

- or via the system circuit breaker.

Close the isolating valve on the heating circuit.

Drain the system down if you need to replace any hydraulic parts.

Allow the appliance to cool before carrying out any

maintenance works.

Ensure that the electrical parts are protected from water when handling.

Only use new waterproof gaskets and o-rings.

Following completion of the repair works, check the replacement parts are functioning correctly.

R410 A Refrigerant

Only use R410 A Refrigerant.

The tools used to ll the system, gauge the pressure and

emptying the refrigerant for recycling must be compatible with and used exclusively for R410 A refrigerant.

In the case of a refrigerant leak requiring additional refrigerant,

this must be carried out in the liquid phase after rst repairing

the leak and must not exceed the amount shown on the appliance data plate.

If the full refrigerant charge has been lost, repair the leak then evacuate. Evacuate the circuit with a maximum pressure of 30 mbar (static pressure) before recharging with fresh refrigerant in the liquid phase using a refrigeration quality vacuum pump.

Do not attempt any solder work on the circuit without having

removed all of the refrigerant rst.

WARNING Do not smoke or light any naked ames during the system removal and rell operations. The gases emitted

through combustion of the refrigerant are toxic.

Standards

On installing and commissioning the appliance you must adhere to the technical rules, standards and provisions in effect at the time.

Standardisation, regulations and

certication

Heat pumps are regulated by the standards on performance measurement, suitability of use and electrical safety.

Reminder of existing regulatory acts

EC regulation No. 20372000 from the 29th of June 2000 This European regulation repeals regulation No. 3093/94 and presents the elimination schedules of CFC and HCFC. It also deals with the collection of refrigerants, system leaks, particularly systems containing more than 3 kg of CFC or

HCFC, as well as the minimum level of qualication required

by the technicians.

EC regulation No. 0842/2006 from the 17th of May 2006 regarding the containment, use, collection and disposal of the

uorinated greenhouse gases, the labelling and elimination

of the products and equipment containing these gases, the restriction of use and banning of certain products from the

market, as well as the training and certication of personnel

and companies operating in the activities targeted by this

regulation: refrigeration, air-conditioning, heat pumps and re

protection systems containing greenhouse gases.

Statutory Requirements

Page 6

Safety Devices

Electrical Supply Failure

The appliance will not work without an electrical supply. Normal operation of the appliance should resume when the electrical supply is restored.

Reset any external controls, to resume normal operation of the central heating.

If the appliance does not resume normal operation check all safety devices are re-set and no fault codes are shown. If the heat pump does not resume normal operation after this call your Installation/Servicing company or Glow-worm service.

Overheating Safety

The appliance software is designed to recognise the potential for an overheat lockout and will shutdown before this happens.

If the appliance fails to resume normal operation and all external controls are calling for heat, then call your Installation/Servicing company or Glow-worm service. organisation using the telephone number on the inside front cover of this booklet.

Condensate Drain Blockage

The heat pump will in normal operation create condensate water which is collected in the drip tray at the bottom of the unit and drains out of the appropriate drain connection.

In severe temperatures this condensate can freeze in the pipe causing a build up of ice in the heat pump. If this should occur warming the drain pipe with a warm cloth or rag will help clear the blockage.

In areas where freezing of the drain is a regular possibility

propriety drain heater elements can be purchased and tted

by your heat pump installer.

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Data Plate

Servicing and Maintenance

To ensure the continued efcient and safe operation of the

appliance it is recommended that it is checked and serviced as necessary at regular intervals. The frequency of servicing will depend upon the particular installation conditions and usage.

Servicing/maintenance should be carried out by a competent person in accordance with the rules in force in the countries of destination.

To obtain service, please call your installer or Glow-worm’s own service organisation using the telephone number on the inside front cover of this literature.

Replacement Parts

Remember, when replacing a part on this appliance, use only spare parts that you can be assured conform to the safety and

performance specication that we require.

Do not use reconditioned or copy parts that have not been clearly authorised by Glow-worm. If a part is required contact your Glow-worm supplier or Glowworm’s own service organisation.

Please quote the name and serial number of the appliance, this information will be on the data plate on the side of the appliance.

If in doubt seek advice from Glow-worm’s own service organisation using the telephone number on the inside front cover of this booklet.

Servicing, Maintenance and Spare Parts

bar

DATA PLATE

15201

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1 Heat pump operation

1.1 How a heat pump works

4 5

A heat pump is a device for transferring heat from one environment to another. It takes (renewable) heat energy from the ambient air, concentrates the energy and transfers it to the heating water. Even when the ambient air is below freezing point there is still ample heat energy available for the heat pump to transfer.

In the diagram above the refrigerant gas is drawn into the compressor (4) and compressed to a high temperature, high pressure gas, it then passes via the change over valve (1) to the refrigerant to water heat exchanger (6) where it gives up it’s heat to the heating water circuit. In doing so the refrigerant is changed from a high pressure gas into a high pressure liquid. The liquid refrigerant then enters the expansion device

(5) where it passes through a small orice in the device causing it’s pressure (and temperature) to fall signicantly.

As a result of this temperature loss the refrigerant absorbs heat from the surrounding ambient air as it continues to pass through the air to refrigerant heat exchanger (2). The refrigerant is then drawn back to the compressor and the cycle continues once more.

Occasionally, particularly in low ambient operating conditions there can be a build up of frost on the external heat exchanger.

This causes a fall off in efciency and has to be removed. This

is achieved by the control operating the change over valve(1) causing it to move to the defrost position.

Which then causes the high temperature refrigerant from the

compressor to ow directly to the outdoor heat exchanger

instead of a plate heat exchanger melting the frost build up.

The refrigerant continues in this reverse direction through the expansion device and ther plate heat exchanger and back to the compressor via the changer over valve.

The process continues until all of the frost has been removed at whcih time the control re-sets the change-over valve to the

heating position once more.

1.2 Operational Range

10°

20°

25°

55°

30°

40°

50°

60°

-15° -10° -5° 0° 5° 10° 15° 20° 25° 30°

Key 1 Max. temperature A Water temperature (Output) B Air temperature (External)

Your Envirosorb unit will only operate within the shaded operational range

15204

15206

Diagram 1.1

Diagram 1.2

Key 1 Heating/cooling changeover valve 2 Air to refrigerant heat exchanger (evaporator in heating mode) 3 Fan 4 Compressor 5 Expansion device 6 Refrigerant to water heat exchanger (condenser in heating mode)

Page 9

2 Technical Data

2.1 Single phase heat pump

Description Unit Envirosorb 8 Envirosorb 10 Envirosorb 14

Performance with underfloor cooling

Performance with underfloor heating

(Water flow 35°C, return 30°C, wet temperature: 6°C)

Heating output kW 8.00 9.30 13.74

Power input kW 2.33 2.70 3.51

Coefficient of performance COP 3.43 3.44 3.91

(Water flow 18°C, return 23°C, outside dry temperature: 35°C)

Cooling output kW 7.68 9.53 16.35

Power input kW 2.79 3.35 4.90

Energy Efficiency Rating EER 2.75 2.84 3.34

Noise level and air flow

Sound power level dbA 68 68 70

Sound pressure level dbA 55 55 57

Airflow rates m

/h 3500 3500 5200

Heating circuit

Max. supply pressure bar 3 3 3

Minimum static pressure bar 1 1 1

Nominal water flow rate in heating mode l/h 1275 1535 2430

Minimum water flow rate l/h 844 1181 1388

Refrigerant circuit

Type of refrigerant R 410 A

Quantity of refrigerant kg 3.2 2.8 4.6

Type of compressor Scroll

Electrical

Supply voltage/frequency V/Hz 1/N/PE 230V 50Hz

Maximum compressor power in heating mode kW 3.36 4.33 6.10

Maximum compressor current in heating mode A 13.88 17.88 25.20

Start-up current (without soft start) A 40 48 65

Dimensions

Height mm 900 900 1300

Width mm 1100 1100 1100

Depth mm 352 352 352

Ø Heating circuit connectors Inches 1" 1" 1" 1/4

Dimensions

Nett total weight kg 101 103 151

Gross total weight kg 112 114 162

NOTE: Fluorinated greenhouse gases as identied in the

Kyoto protocol, are contained within a fully sealed system.

15299

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2 Technical data - Dimensions

bar

384

360

606

245

900

352

1100

108

240

15212

384

360

606

245

1300

352

1100

108

240

15213

Envirosorb 8 & 10

Envirosorb 14

Diagram 2.1

IMPORTANT: Upper connection is heating return and lower

connection is heating ow - always ensure connections are correct

Page 11

3 Refrigerant Systems

Envirsorb 8 & 10 - refrigeration circuit (heating mode)

Key 1 Exterior protection grille 2 (NTC 1) exterior ambient sensor 3 Heat pump casing 4 (NTC 2) air/refrigerant thermistor 5 (V4V) 4-way valve 6 Expansion vessel (hydraulic system) 7 Manual water circuit air vent valve 8 Fan 9 Refrigerant circuit high pressure Schrader access connector 10 Water circuit pressure gauge 11 Air/refrigerant heat exchanger 12 Refrigerant circuit low pressure Schrader access connector 13 High pressure refrigerant safety pressure switch 14 Branch connection not used 15 High-pressure refrigerant circuit sensor

16 (K4) high temperature safety thermostat 17 (R2) drip tray anti-freeze heater element 18 Scroll Compressor 19 Refrigerant expansion vessel 20 Refrigerant/water plate exchanger 21 Water circuit circulation pump 22 (NTC 5) water return sensor 23 (R1) plate exchanger / water anti-freeze heater element

24 (Db) water ow detector

25 Hydraulic circuit pressure relief valve (factory set at 3 bar)

26 (NTC 4) water ow temperature sensor 28 Bafe plate expansion device 29 Bi-directional lter/dryer

30 (NTC 3) plate exchanger anti-freeze heater temperature sensor A Air inlet B Air outlet C Heating circuit return

D Heating circuit ow

3029

22212019

1615

109

15208

Diagram 3.1

Page 12

3 Refrigerant Systems

232221

1514

121110

Envirosorb 14 - refrigerant circuit (heating mode)

Key 1 Exterior protection grille 2 (NTC 1) Exterior ambient sensor 3 Heat pump casing 4 (NTC 2) air/refrigerant thermistor 5 (V4V) 4-way valve 6 Expansion vessel (hydraulic system) 7 Manual water circuit air vent valve 8 Fans 10 Heat pump Schrader connector 11 Refrigerant circuit low pressure Schrader access connector 12 Water circuit pressure gauge 13 Heat pump safety pressure switch 14 High-pressure refrigerant circuit sensor 15 (K4) overheating safety thermostat 16 Scroll Compressor 17 Expansion sensor in cooling mode 18 Expansion sensor in heating mode 19 Air/refrigerant heat exchanger

20 (R2) drip tray anti-freeze heater element 21 Refrigerant/water plate exchanger 22 Water circuit circulation pump 23 (NTC 5) water return sensor 24 (R1) plate exchanger / water anti-freeze heater element

25 (Db) water ow detector

26 Hydraulic circuit pressure relief valve (factory set at 3 bar)

27 (NTC 4) water ow temperature sensor

28 (NTC 3) plate exchanger anti-freeze heater temperature sensor 29 Refrigerant expansion vessel 30 Thermostatic expansion valve in heating mode

31 Bi-directional lter/dryer

32 Thermostatic expansion valve in reverse mode A Air suction B Air outlet C Heating return circuit

D Heating circuit ow

15209

Diagram 3.2

Page 13

4 Installation

4.1 Pre-installation recommendations

All heat pumps operate at their most efcient when connected to low temperature radiators or underoor heating systems.

If any scheme other than those shown in this manual is proposed for use with an Enviorosorb unit please contact our technical helpline for assistance.

The layout of the piping must be planned in such as way as to avoid forming air pockets and to facilitate the bleeding of air from the system. All the plumbing high points and radiators

must be tted with a air bleeding valves.

If thermostatically controlled valves are used, it is advisable

that you do not t them on all the radiators and never in the

room in which the ambient thermostat is installed. Consider

tting a system by-pass valve to ensure minimum ow

through the heat pump.

Please ensure that the heating circuit water ow corresponds to the nominal volume ow of the appliance (see chapter 1

“Technical data”).

As well as the standard pipework and heat emitters, the following hydraulic parts are required as a minimum to be

tted to all installations. See section 5 for typical heating

schematics:-

A lling station, refer to section 8, including a back-ow stop valve on the cold water inlet allowing you to ll and bleed the

circuit.

Isolating valves between the heat pump and the heating

circuit, either side of any pumps, lters or other maintainable

parts.

A ow regulator valve to balance the system ow and a by-pass regulator to ensure ow through the heat pump is

maintained should all thermostatic valves close.

An additional lter, secondary boost pump, buffer vessel and

expansion tank (as necessary).

An air separator.

Insulation and protection for the external pipework.

Suitable and sufcient glycol mix to ensure frost protection in

low temperatures.

4.2 Appliance pack contents

WARNING The batteries must be placed into the heat pump

control panel.

If they are not tted or they are low on power, this may cause

communication errors and technical faults in the appliance.

Batteries contain substances that are harmful to the environment. As such they must not be thrown out with the general waste and should be disposed of properly in accordance with current waste regulations.

15215

Diagram 4.1

psi b

Envirosorb 8 & 10

Key 1 Heat pump 2 Instructions and warranty documents pack 3 Filter 4 Drain plug 5 Drainage elbow 6 Batteries for controller

Page 14

bar

4 Installation

4.3 Unpacking the appliance

Remove the packaging carefully ensuring that you don’t damage the appliance. Dispose of the packaging responsibly.

Remove the fastening screw (2) from the pallet (3) in the front and the rear of the appliance, see diagram 4.3.

IMPORTANT: With regards to the Manual Handling Operations, 1992 Regulations, the following lift operation exceeds the recommended weight for a one man lift.

15217

4 5

15216

Diagram 4.2

Diagram 4.3

Envirosorb 14

Key

1 Heat pump 2 Instructions and warranty documents pack 3 Filter 4 Drain plug 5 Drainage elbow 6 Batteries for control panel

Page 15

4 Installation

4.4 Transporting the appliance

WARNING: Refer to diagram 4.4, do not lean the appliance

more than 45° during transportation as this may damage the refrigeration circuit which could lead to a complete system failure.

4.5 Moving appliance into place

IMPORTANT: With regards to the Manual Handling

Operations, 1992 Regulations, the following lift operation exceeds the recommended weight for a one man lift.

Install the heat pump on a raised concrete base (refer to section 4.8).

The appliance must be securely xed to the ground using appropriately sized xings.

NOTE: Due to the varied site conditions we do not supply

xings and advise that the installer should supply those which

are suitable.

Mark the xing points, drill holes then x the heat pump in

place.

4.6 Using the anti-vibration mounts

If the appliance is installed in a position where transmitted noise and vibration may be an issue, the heat pump should be mounted on anti-vibration mounts which are available as a Glow-worm accessory.

You can also use these blocks on at solid ground or a

concrete base in order to raise the appliance and facilitate drainage.

15218

Diagram 4.4

bar

20 40

0 4

Page 16

4.8 Correct support

Install the heat pump on a raised concrete base or well

drained solid support in order to limit the risk of ooding, see

diagram 4.6.

A slight incline between A and B (max 2o) will assist removal of condensate.

4 Installation

4.7 Positioning the heat pump

This heat pump is designed for external use only.

Do not install it in the proximity of a heat source or ammable

materials.

Check that the heat pump fan is not installed adjacent to a window or other opening into the property.

Check that the noises and vibrations are not transmitted to surrounding properties.

Do not expose the heat pump to a corrosive or dusty environments (close to a dirt path for example).

Do not install close to trees and shrubs that may lose their leaves in autumn.

Do not place it close to foul air extraction fans or boiler outlets.

Do not position in the face of the prevailing wind or opposite other heat pump air outlets.

Adhere to the minimum clearence dimensions in order to

obtain the correct air ow and to facilitate maintenance works,

see diagram 4.5.

Ensure that there is sufcient space available to t the heating

circuit plumbing and insulation.

psi ba

500

min.

500

min.

1500 min.

15210

15211

Diagram 4.5 Diagram 4.6

100 min.

20 4

HEAT PUMP

CONCRETE BASE Fall to drain required up to a max of 2

Page 17

5 Hydraulic Schematics

5.1 A single heating zone underoor

heating using the Envirosorb controller

Heating ow temperature < 50°C (optimum <35C).

Electrical back-up heater with single heat setting controlled via Envirosorb control.

Water temperature controlled via sensor checks on the ow &

return temperature to the heat pump.

Electrical connections

L‘

17 16 15 14

5 4

3 2

15428

Diagram 5.1

System A schematic

Key 1 Heat pump

2 Underoor heating

3 Return 4 Flow 5 Control thermostat 6 Expansion chamber (option) 7 Buffer vessel 8 Electrical heater

15256

Diagram 5.2

▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▼ ▼

This then gives access to the cong menu where the following

settings can be altered as required.

down

With control switched off enter access code as follows:

NOTE: For heating schewmes other than those shown in this manual contact Glow-worm Technical Support for guidance

Page 18

5 Hydraulic Schematics

CONFIG menu setting table

Parameter

No.

Menu Name System

setting

Range Factory

setting

Notes

System Conguration

02 DHW control by HP sensor (accessory) 0 0/1 0 If DHW sensor tted this must be set to 1

06 Legionella Protection (only active if

parameter 2 set to 1)

0 0/1 0 Allows activation of DHW legionella

protection using DHW sensor accessory

11 Auto adaptive regulation selection 0 0/1 0 Set to 1 to allow manual differential setting

(Parameter 31)

12 Back-up heating required during de-frost 0 0/1 0 Set to 1 for heater to support HP during

de-frost

13 Underoor cooling sensors tted

(accessory)

0 0/1 0 Set to 1 if control used as accessory tted

14 Control used as a thermostat 0 0/1 0 Set to 1 if control used as a thermostat

15 Heating curve setting (only if control is

thermostat)

0 0/1 0 Set to adjust fan curve

(Parameter 41 and 42)

16 Underoor cooling sensor (only active if

parameter 13 set to 1)

0 0/1 0 If Envirosorb control of underoor sensor

required this must be set to 1

17 Dew point sensor sensor (only active if

parameter 13 set to 1)

0 0/1 0 If Envirosorb control of dew point sensor

required this must be set to 1

18 DHW sensor (only active if parameter 2

set to 1)

0 0/1 0 If Envirosorb control of DHW sensor

required this must be set to 1

Parameter Setting

24 Water temperature setting (cooling) +18

C -10 to 20 +18oC Set cooling output ow temperature as

required

26 Water temperature setting (heating) +35

C 23 to 55 +35oC Set heating output ow temperature as

required

30 Back-up heater low temperature

operation

C -9 to 20 +5oC Low temperature setting which

automatically triggers back-up heating

31 Heat pump return temperature hysteresis

(differential)

1 1 - 3 1 HP switches off when ow temp. (para.

26) is reached and re-starts when

differential below return temperature

recorded when HP stops is reached

39 Back-up heater operating on temperature 5 0 - 15 5 Set differential temperature at which

boost heater supports HP i.e. temperature

differential between ow temperature and

set point which triggers back-up

40 Back-up heating switch off temperature 0 0 - 15 0 Sets differential below set point

temperature (parameter 26) at which the

heater switches off

41 Heating curve trough 0 0.5 to

4.3

0 If para. 15 set to 1, allows heating trough

to be adjusted when outside temperature

is 20

C (see chart)

42 Heating curve slope 1 0 - 15k 1 If para. 15 set to 1, allows heating slope to

be selected as required (see chart)

51 Immersion heater shut-off temperature 55 45-60 55 If para. 2 set to 1, allows adjustment of set

point temperature for immersion heater

Page 19

Dip switch setting

If an external/secondary control is used to control the

Envirosorb unit (connected to terminals7 & 8), switch 1 must

be set to on. Switch 2 should be off at all times.

OFF

SW1 switch on main PCB

15252

Diagram 5.3

5.2 Operation

When the heat pump stops by the ow temperature setting

(parameter 26) the software registers the return temperature. The setting of parameter 31 dictates the differential temperature for the compressor re-start e.g. Heating mode - parameter 26 set at 35ºC and parameter 31 set at 2.

• Compressor stops at ow temperature of 35ºC with say

30ºC.

• When return temperature drops to 28ºC (30ºC – 2ºC) the

compressor starts again.

• Regardless the compressor stops for a minimum of 3

minutes due to in-built delay timer.

5 Hydraulic Schematics

Page 20

5 Hydraulic Schematics

5.3 A single heating zone radiator heating using the Envirosorb controller

Heating ow temperature < 50°C (optimum <35C).

Electrical back-up heater with single heat setting controlled via Envirosorb control.

Water temperature controlled via sensor checks on the ow &

return temperature to the heat pump.

15422

Diagram 5.4

System B schematic

Key 1 Heat pump 2 Low temperature radiator 3 Return 4 Flow 5 Control thermostat 6 Expansion chamber (option) 7 Buffer vessel 8 Electrical heater 9 By-pass valve

▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▼ ▼

This then gives access to the cong menu where the following

settings can be altered as required, see table over.

NOTE: For heating schemes other than those shown in this manual contact Glow-worm Technical Support for guidance.

5.4 Operation

When the heat pump stops by the ow temperature setting

• Compressor stops at ow temperature of 35ºC with say

30ºC.

• When return temperature drops to 28ºC (30ºC – 2ºC) the

compressor starts again.

• Regardless the compressor stops for a minimum of 3

minutes due to in-built delay timer.

down

With control switched off enter access code as follows:

Electrical connections

Diagram 5.5

L‘

17 16 15 14

5 4

3 2

15256

Electrical connections

Page 21

5 Hydraulic Schematics

CONFIG menu setting table

OFF

SW1 switch on main PCB

15252

Diagram 5.6

Parameter

No.

Menu Name System

setting

Range Factory

setting

Notes

System Conguration

02 DHW control by HP sensor (accessory) 0 0/1 0 If DHW sensor tted this must be set to 1

06 Legionella Protection (only active if

parameter 2 set to 1)

0 0/1 0 Allows activation of DHW legionella

protection using DHW sensor accessory

11 Auto adaptive regulation selection 0 0/1 0 Set to 1 to allow manual differential setting

(Parameter 31)

12 Back-up heating required during de-frost 0 0/1 0 Set to 1 for heater to support HP during

de-frost

13 Underoor cooling sensors tted

(accessory)

0 0/1 0 Set to 1 if control used as accessory tted

14 Control used as a thermostat 0 0/1 0 Set to 1 if control used as a thermostat

15 Heating curve setting (only if control is

thermostat)

0 0/1 0 Set to adjust fan curve

(Parameter 41 and 42)

16 Underoor cooling sensor (only active if

parameter 13 set to 1)

0 0/1 0 If Envirosorb control of underoor sensor

required this must be set to 1

17 Dew point sensor sensor (only active if

parameter 13 set to 1)

0 0/1 0 If Envirosorb control of dew point sensor

required this must be set to 1

18 DHW sensor (only active if parameter 2

set to 1)

0 0/1 0 If Envirosorb control of DHW sensor

required this must be set to 1

Parameter Setting

24 Water temperature setting (cooling) +18

C -10 to 20 +18oC Set cooling output ow temperature as

required

26 Water temperature setting (heating) +35

C 23 to 55 +35oC Set heating output ow temperature as

required

30 Back-up heater low temperature

operation

C -9 to 20 +5oC Low temperature setting which

automatically triggers back-up heating

31 Heat pump return temperature hysteresis

(differential)

1 1 - 3 1 HP switches off when ow temp. (para.

26) is reached and re-starts when

differential below return temperature

recorded when HP stops is reached

39 Back-up heater operating on temperature 5 0 - 15 5 Set differential temperature at which

boost heater supports HP i.e. temperature

differential between ow temperature and

set point which triggers back-up

40 Back-up heating switch off temperature 0 0 - 15 0 Sets differential below set point

temperature (parameter 26) at which the

heater switches off

41 Heating curve trough 0 0.5 to

4.3

0 If para. 15 set to 1, allows heating trough

to be adjusted when outside temperature

is 20

C (see chart)

42 Heating curve slope 1 0 - 15k 1 If para. 15 set to 1, allows heating slope to

be selected as required (see chart)

51 Immersion heater shut-off temperature 55 45-60 55 If para. 2 set to 1, allows adjustment of set

point temperature for immersion heater

Dip switch setting

If an external/secondary control is used to control the

Envirosorb unit (connected to terminals7 & 8), switch 1 must

be set to on. Switch 2 should be off at all times.

Page 22

6 Plumbing

6.1 Plumbing

Before starting work, carefully clean the pipe work with a suitable product in order to remove any impurities that may

be present such as metal lings, solder, oil and grease. These

foreign bodies can get trapped in the appliance which would inhibit its operation.

Do not braze connections on the appliance, these must be made with mechanical joints to facilitate future servicing.

Make sure that mechanical connections are not overtightened.

Heat pump Thread

ENVIROSORB 8 1" Male BSP

ENVIROSORB 10 1" Male BSP

ENVIROSORB 14 1 1/4" Male BSP

The table above shows the heating ow and return connection

dimensions for each model.

WARNING The diameter of the ow and return pipes must

match the diameter of the connectors with the heat pump.

There must be no reduction in diameter between the

appliance inow and the rst bend/connector.

Before making connections to the appliance remove the protection plugs located on the connectors.

Fit the supplied hydraulic lter into the heating return pipe.

Fit it between two shut-off valves so that it can be removed and cleaned periodically.

The appliance is tted with an expansion vessel. If it is necessary to compensate for the water expansion, t

an additional expansion vessel (available as a Glow-worm accessory) in the appliance heating circuit.

The diameter of the safety valve drainage pipe must match the outlet diameter of the safety valve.

6.2 Condensation drainage

When the appliance is operational, it will produce condensation that needs to be drained off.

Insert the drainage elbow and pipe into the correct opening depending on the angle of the heat pump. Seal off the other opening with the supplied plug, see diagram 6.2.

Where required extend the drain outlet to a suitable outow

point using suitably sized pipework connected to the drain elbow

15221

15284

15223

Diagram 6.1

HEATING CIRCUIT RETURN

HEATING CIRCUIT FLOW

DRAINAGE ELBOW

PLUG

Diagram 6.2

Page 23

7 Wiring

7.1 Wiring

WARNING: This appliance must be earthed.

This appliance must be wired in accordance with these instructions and in compliance with all electrical regulations.

Any fault arising from incorrect wiring cannot be put right under the terms of the Glow-worm guarantee. All system components must be of an approved type.

Electrical components have been tested to meet the equivalent requirements of BSEN 7671 and the BEAB regulations.

Do not interrupt the mains supply with a time switch or programmer. Programmer operation can be achieved by connect-

ing across terminals 3 & 4, remove link rst, see diagrams 8.3

and 8.4.

Connection of the whole electrical system and any heating system controls to the electrical supply must be through a common isolator. Isolation should be preferably by a double pole rotary isolator having a minimum contact separation of 3mm on each pole. The isolator should be readily accessible

and within 1M to the appliance. It should be identied as to

its use.

The connection cable between the isolator and the heat pump must be:

- designed for use in a xed circuit.

- weather-proof.

- tted with wire cross-section that is capable of handling the

total heat pump electrical output and no smaller than the CSA of the cable supplying the isolator.

The heat pump must be connected to the mains circuit board via an independent circuit protected by an RCD (type D) circuit breaker.

Heat pump

Type D

circuit breaker

protection

Residual

current

ENVIROSORB 8 20 A 30 mA

ENVIROSORB 10 20 A 30 mA

ENVIROSORB 14 25 A 30 mA

15224

15285

Diagram 7.1

0 4

FRONT PANEL

SCREW

7.2 Removing cover

Unless stated otherwise parts are replaced in the reverse order to removal.

Remove the xing screws, see diagram 7.1.

Slide the front panel down and then pull towards you.

Keep it in a safe place.

Page 24

7.3 Single phase 230 V power connections

Feed the power lead through the heat pump cable support.

Connect the power lead to the single phase 230 V network + neutral + earth.

The table below shows indicative mains power cable sizing. all cable selections should be made in accordance with the requirements of BS7671

7 Wiring

Heat pump Minimum wire cross section

ENVIROSORB 8 2.5 mm²

ENVIROSORB 10 4 mm²

ENVIROSORB 14 4 mm²

15227

15223

Diagram 7.2

POWER LEAD

POWER SUPPLY UNIT

7.4 Mounting the control indoors

A Disconnect the interface from its connection

inside the heat pump.

Take the card off its support

Re-assemble the card on the accessory so that it can

be installed inside.

Connect the card to the heat pump with a dual wire cable (not supplied).

15438

Diagram 7.3

Page 25

7 Wiring

Envirosorb 8 & 10

15221

Diagram 7.3

Key Chp High-pressure refrigerant circuit sensor Cpr Compressor

Db Water ow detector

DT1 Compressor circuit breaker 8kW - 25A 10kW - 32A DT2 Fan circuit breaker 2 A TCde Control panel NTC 1 Exterior sensor NTC 2 Air/refrigerant thermistor NTC 3 Plate exchanger anti-freeze thermistor

NTC 4 Heating ow thermistor

NTC 5 Heating return thermistor K1 Internal ON/OFF K2 Operating logic change over K3 High pressure safety pressure K4 Compressor outlet overheating safety cut-out P Water pump R1 Plate exchanger antifreeze heater R2 Anti-freeze tray heater

R3 Compressor crankcase heater RL1 Compressor contact SW1 Switch Ve Fan V4V 4-way valve (changeover valve) X1 Start-up current limiter

A User interface B Heat pump start/stop C Heating mode control D Setpoint selector E Cooling output F Heating output G Alarm signal H Backup heating I Fan coil unit control J R2 tray heater element K Backup immersion heater L Common to 3-way valve M 3 way heating valve output N 3 way hot water valve output

White & blue

White

Brown

Pink

Black

Red

Green

Gray

White

White & black

Black

White & blue

Blue

Black

White

Green

Black

Yellow

Blue

Page 26

7 Wiring

White & blue

White

Brown

Pink

Black

Red

Green

Gray

White

White & black

Black

White & blue

Blue

Black

White

Green

Black

Yellow

Blue

15222

Envirosorb 14

Key Chp High-pressure refrigerant circuit sensor Cpr Compressor

Db Water ow detector

DT1 Compressor circuit breaker 40 A DT2 Fan circuit breaker 3 A TCde Control panel NTC 1 Exterior sensor NTC 2 Air/refrigerant thermistor NTC 3 Plate exchanger anti-freeze thermistor

NTC 4 Heating ow thermistor

RL1 Compressor contact SW1 Switch Ve Fan V4V 4-way valve (changeover valve) X1 Start-up current limiter

A User interface B Heat pump start/stop C Heating mode control D Setpoint selector E Cooling output F Heating output G Alarm signal H Backup heating I Fan coil unit control J R2 tray heater element K Backup immersion heater L Common 3-way valve M 3 way heating valve output N 3 way hot water valve output

Diagram 7.4

Page 27

8 Filling the Heating Circuit

8.1 Protection against frost and corrosion

The system must be lled with glycol water solution (mix of

water and heating antifreeze) Suitable glycol is available as a Glow-worm accessory

Glycol solution must be mixed suitable to protect the system down to a minimum temperature of -15 °C. The glycol data

sheet will conrm the concentration required to meet this

requirement.

NOTE: Do not use any anti-freeze or inhibitor products without G-w approval. Not all products are compatible with this appliance.

IMPORTANT: Risk of damage! You may not under any circumstances mix different brands of glycol. Otherwise the solution may become ineffective as an antifreeze or anticorrosive, resulting in damage to heat pump or other parts of the system.

Skin contact is normally not dangerous. Eye contact only causes minor irritations, you should nevertheless immediately wash your eyes. Observe the safety data sheet instructions.

To protect the system reliably against frost in winter, the

entire heating circuit must be completely lled with the glycol/ water uid to the correct dilution.

Check the antifreeze concentration after lling the system and

then once a year. An anti-freeze tester is available as a Glowworm accessory. always ensure the correct glycol/water mix is present in the system.

Prepare the mix in a container that is large enough for the entire system. Check the mixture proportions with an antifreeze tester.

8.2 Filling the system

NOTE: After completing the ow and return piping of the

heating circuit: Check that there are no leaks. Repair and re-test as required.

Once the water tightness of the pipework has been proven, fully insulate the pipework, taking particular care to ensure

joints and ttings are adequately covered.

Fill the heat circuit with suitable glycol/water mix before starting the appliance.

Open all the heating circuit thermostatically controlled valves.

In order to bleed the heating circuit when lling, use a ller

pump (1). Available as a Glow-worm accessory

Connect the pump (1) to the back-ow stop valve (3). Open

shutoff valves (3) and (6) as well as the system valves. Immerse a pipe in the container (2) into which the glycol/ water mix is poured and connect it to shutoff valve (4). Open

back-ow stop valve (4) and close shutoff valve (5) so that

the pump can circulate the mix through the entire system. Continue to top up the container (2) as required

Start the ller pump (1) and ll the heating circuit.

Keep the ller pump (1) on until the connecting pipe is completely bled at the back-ow stop valve (4).

Then open valve (5) so that the air located between taps (3) and (4) can be bled off. Close valve (4) and pressurise the

heating system to between 1 and 2 bars with the ller pump

(1).

WARNING Do not exceed 3 bars.

Close valve (3). Stop the ller pump (1). Check that valve (4)

is closed.

Any remaining glycol must be kept in a suitable container and

can be reused for the next ll.

Give the vessel containing the remaining glycol to the user and tell them to store it carefully and out of reach of children.

15239

Key 1 Filler pump (*) 2 Glycol water vessel (*)

3 Filling back-ow stop valve (*) 4 Filling back-ow stop valve (*)

5 Shutoff valve (*) 6 Shutoff valve (*) 7 Bleeding valve

8 Heating circuit ow

9 Heating circuit return (*) Not supplied with the appliance

Diagram 8.1

Page 28

9 Conguration

WARNING Do not start the heat pump without the control panel cover in place. Risk of electric shock.

9.1 Pre-commissioning instructions

Check that the heating system is complete and that the correct amount of expansion and buffer vessels have been

tted and the plumbing joints are sealed and the system has been lled with the correct water/glycol mix.

Check that the heating circuit shutoff valves are all open and all air has been purged from the system.

Ensure that the heat pump is stable and xed in place and the

correct clearances are available around the unit.

Check that the electrical installation is complete and the

correctly sized and rated circuit breaker has been tted, the power lead is xed in place by the cable restraint and that the

wires are tight in the terminal block. Check that the control (if

tted remotely) is correctly wired and polarity is correct. Insert

batteries into control.

Check that there are no tools or foreign objects left in the appliance. Check that the heating circuit pressure is between 1 and 2 bars on the heat pump pressure gauge.

Power up the appliance.

IMPORTANT: DO NOT SWITCH ON UNTIL COMPLETION OF THE CONFIGURATION SETTINGS, refer to section 9.2.

On completion of the system conguration press the On

button to start the appliance.

Check the operating performance of the appliance and complete the commissioning and warranty cards.

9.2 Conguration of the heat pump

In order to access a reduced set of system conguration

parameters, you must enter the password when the machine is in mode ‘OFF’ :

▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▼ ▼

‘CONFIG’ will appear on the display. The parameter number will appear on the left and the current setting will appear on the right

• To browse the list, press the ON/MODE button

• To carry out changes, use the ▲ or ▼ buttons.

IMPORTANT: To save the changes you must browse through the entire list.

• To exit without saving your modications,

press the OFF/SET button. (see table on next page for full installer settings)

OFF

CONFIG

Config shows when password entered

SettingConfig No.

Unit in off mode

15245

down

mode OFF

▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▼ ▼

Page 29

No. Parameter name Possible

value

Meaning Default

value

2 Envirosorb DHW tank sensor tted (accessory) 0 System without immersion heater or immersion

heater controlled by other control

1 System with immersion heater controlled by

Envirosorb controller

6 Legionella Protection (only active if parameter

2 set to 1)

0 Allows activation of DHW legionella protection

using DHW sensor accessory

11 Hysteresis (temperature control differential) 0 The hysteresis of the control is to be manually

set using parameter 31

1 Auto adaptive regulation - the hysteresis of the

control is automatically set by the Envirosorb software

12 Control of the back-up heating during the de-

icing cycles

0 Back-up heater does not operate during de-

frost period

1 Back-up heating operates during the de-frost

periods to maintain heating output

13 Envirosorb oor sensor tted (accessory) 0 No oor sensor or oor sensor by other control 0

1 Envirosorb oor sensor tted

14 The control panel is used as a thermostat 0 Thecontrol panel is not used as a thermostat. 0

1 The control is used as an internal thermostat

15 Activation of heating curve 0 Heating curve deactivated 0

1 Heating curve activated - Heating curve setting

is via parameters 41 & 42

16 Underoor cooling sensor (only active if

parameter 13 set to 1)

0 If Envirosorb control of underoor sensor

required this must be set to 1

17 Dew point sensor sensor (only active if

parameter 13 set to 1)

0 If Envirosorb control of dew point sensor

required this must be set to 1

18 DHW sensor (only active if parameter 2 set to 1) 0 If Envirosorb control of DHW sensor required

this must be set to 1

24 Water temperature setting in cooling mode 10 to 20 Set desired temperature

26 Water temperature setting in heating mode 23 to

+55°C

Select the desired temperature 35

30 Outside temperature triggering the backup

heating (the back-up heater will be activated below the set temperature)

0 to 40 0 corresponds to -20°C

40 corresponds to +20°C Add +20 to the temperature selected in order

to obtain the correct coefcient.

E.g. to trigger the backup at +5°C : +5+20 = 25

25 (+5°C)

31 Manual hysteresis setting 1 to 3 This value is the temperature drop to be

reached on the water return in order to trigger the compressor start

39 Temperature difference required to trigger the

backup heating (this is the temperature below the set point (parameter 26) at which the boost heater will be activated

0 to 15 Enter the desired temperature difference. 5

40 Temperature difference required to stop the

backup heating (this is the temperature below the set point (parameter 26) at which the boost heater will be de-activated

0 to 15 Enter the desired temperature difference 0

41 Water curve offset 15 to 30 Flow temperature when the outside

temperature is 20°C (see curve opposite)

42 Slope of the water curve 0.5 to 4.3 Choose a slope on the curve (see curve

opposite)

51 Maximum hot water storage temperature (hot

water tank trigger temperature)

45 to 60°C

Enter the desired maximum temperature (only active if para 2 set to 1)

9 Conguration

Page 30

10-10

0,5

0,8

1,0

1,3

1,5

1,8

2,0

2,3

2,5

2,8

3,8

4,0

4,3 = Slope

(parameter42)

3,0

3,3

3,5

T. max

Outside temperature (°C)

Setting 41: curve trough

flow T

(°C)

Diagram 9.1

9 Conguration

NOTE: The maximum water temperature setting is 55oC

(settings 26) - this is the ow temperature.

However the HP will stop if the return temperature reaches 47oC.

15249

Page 31

15424

Diagram 10.1

VISUAL

1 4 5 6

Screen page number

4 Compressor functioning 5 Change over valve activated 6 Plate exchanger anti freeze heater activated 7 Compressor crankcase heater on

Outside temperature

Air/fluid heat exchanger temperature

Refrigerant high pressure

15425

Diagram 10.2

VISUAL

2 75

Screen page number

4 Tray heater activated

5 Operating in reverse mode 6 Operating in heating mode 7 Fan coil output activated

Domestic hot water sensor temperature (Accessory)

Floor sensor temperature ( accessory)

Water temperature

setting (parameter 26

sets the heating flow

temperature or 24 for

cooling function)

mode ON

▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▼ ▼

10.1 Visual display screens

The Envirosorb control has a number of information and fault display facilities, to access the visual information read out the machine must be switched to ‘ON’ and the installer code has to be entered.

As well as showing the current operational status of the main parts of the system. The pages display the operating parameters of the unit and can be used to verify the performance and to diagnose possible performance issues.

10.2 Monitoring the heat pump performance

The visual menu allows you to display operating conditions and working pressures and temperatures of the appliance. With the heat pump switched ON enter the password using

the ▲ and ▼ buttons on the user interface as in the sequence

below:

▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▼ ▼

The word “VISUAL” appears on the interface screen indicating you have entered visual menu screens. Some of thedisplays are shown only when relevant devices

are tted.

The data is displayed over 3 menu pages:

Use the ▲ and ▼ buttons to navigate from one menu to

another.

10 Settings

down

down3 up

down

10.3 Visual display page 1

Page 1 displays the refrigeration system operating conditions

10.4 Visual display page 2

Page 2 displays temperature settings and accessory temperatures

Page 32

10 Settings

15426

Diagram 10.3

VISUAL

3 6

Screen page number

4 Heating demand 5 Back-up heating demand 6 Immersion heater demand 7 3-way valve signal for DHW

Plate heat exchanger temperature

Water return temperature

Water flow temperature

10.5 Visual display page 3

Page 3 displays measured temperatures

Page 33

11 Operational Safety Procedures

IMPORTANT Any work carried out on the refrigerant circuit

must be conducted by qualied and authorised personnel.

The faults described in this chapter require the services of a

qualied professional and, if necessary, the Glow-worm Post-

Sales Service.

IMPORTANT In the event of air trapped in the system, bleed off the air contained in the radiators and readjust the pressure. If the top-ups are too frequent, it may mean that there is a slight leak in the system and it will therefore be necessary to identify the source. It may also mean that there is corrosion in the heating circuit requiring suitable treatment of the circuit water. Frequent water top-ups greatly reduce the glycol in the heating circuit and therefore the system antifreeze protection. The glycol concentration can be tested using the Glow-worm anti-freeze test kit accessory available from your Glow-worm stockist.

11.1 Fault codes

The faults described in this chapter place the appliance out of service and require the services of a technician to repair and re-commission the system.

°C °F

ERR

ON OFF

1 2 3 4 5 6 7

LOW

BAT

TIMER ON OFF

Key 1 ERROR display shows when a lock-out error occurs

The display ashes between ERR and the fault code.

15297

15274

Diagram 11.1

c2 Main circuit board fault

Change the main circuit board.

Floor temperature sensor fault where fitted (accessory)

Check the sensor, the polarity and the CONFIG menu

Ambient humidity sensor fault where fitted (accessory)

Check the sensor, the polarity and the CONFIG menu

Excessive compressor discharge pressure (HP pressure switch operated 3 times)

Check to see if the external heat exchanger coil is clogged, poor flow through the plate heat exchanger or if there is excessive refrigerant in the system.

Excessive heat on discharge pipe from the compressor

If T > 120 °C => check the compressor. If T< 120°C => check the K4 thermostat (fitted to the compressor discharge pipe).

Temperature too low in the plate exchanger: risk of freezing in the plate exchanger.

Check the temperature sensor settings in the CONFIG menu. Check flow in heating circuit.

Failure or incorrect polarity of the floor sensor (floor cooling accesory)

Check to see if the sensor is disconnected, or if there is a polarity error or circuit board failure.

Failure or incorrect polarity of the humidity sensor (floor cooling accessory)

Check to see if the sensor is disconnected, or if there is a polarity error or circuit board failure.

Failure or incorrect polarity of the domestic hot water tank thermistor (where fitted - accessory)

Check to see if the sensor is disconnected, or if there is a polarity error or circuit board failure.

Code Description Actions

Failure of the high-pressure refrigerant circuit sensor (Chp)

Check the sensor and its connection

Failure of the (NTC 2) thermistor (external heat exchanger sensor)

Check the thermistor and its connection

Failure of the (NTC 1) outside ambient sensor

Check the thermistor and its connection

Failure of the (NTC 4) water flow thermistor

Check the thermistor and its connection

Failure of the (NTC 5) water return thermistor

Check the thermistor and its connection

Failure of the (NTC 3) plate heat exchanger anti-freeze protection thermistor

Check the thermistor and its connection

Failure of the user interface thermistor (on back of control pad)

Change the control panel card and/or the main circuit board.

Poor communication between the interface and the main circuit board

Check the cable connection

Page 34

Code Description Actions

This flashes at around 2000 operational hours of the pump to indicate that it is necessary to clean the filter.

Clean the filter then rest the counter to zero.

In heating mode, at an outside temperature of 7ºC, the pressure reached is higher than 35 bars.

The compressor service pressure is high. Service the heat pump. Check air flow through the external heat exchanger and water flow through the heating system.

In heating mode, at an outside temperature of 20ºC, the refrigerant low pressure is below 3 bar

Possible lack of refrigerant. The compressor service pressure is low Service the heat pump.

Low water flow: an initial fault has been found. Repetition of the F5 fault will stop the device (code h2)

Check the system valves, the filter, the pump and the heating system is free of air etc.

Antifreeze fault: an initial fault has been found. Repetition of the F6 fault will stop the device (code h4)

Check the temperature sensor settings in the CONFIG menu

The sensor measured an initial pressure excess. 3 detections produce an h0 blockage. An h0 code may be produced either by 3 high pressure detections in less than an hour (P>42 bar).

Check to see if the external heat exchanger is clean or the plate heat exchanger is clogged or the heating flow is restricted or if there is excessive refrigerant.

11.2 Appliance maintenance Warnings

°C

°F

ERR

ON OFF

1 2 3 4 5 6 7

LOW BAT

TIMER ON OFF

Key 1 Maintenance icon, indicates maintenance intervention required.

15277

15297

The appearance of the maintenance icon on the display screen indicates that a maintenance check is required in order to avoid any appliance stoppages.

As the ON/MODE button is pressed each time, the display

ashes between the maintenance icon and the maintenance

code.

Diagram 11.2

11 Operational Safety Procedures

15298

Page 35

11 Operational Safety Procedures

11.4 Fault logs

This menu allows you to display the log for the last 8 recorded faults. Only ‘F’ faults are recorded.

Ensure that the heat pump is functioning.

Save the password using the ▲ and ▼ buttons on the user

interface: The word “VISUAL” appears on the interface screen.

3 4 5 76

VISUAL

Key 1 Page 3 to display the fault codes scroll through until page 3 is shown and 3 shown in this box. 2 Fault display.

15279

▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▼ ▼

down

Press the ▲ button three times to display page 3 and then

press the ON/MODE button. You will now be in the fault display section.

The main display shows the last 8 errors recorded.

Use the ▲ and ▼ buttons to navigate from one error to

another.

Use the OFF/SET button to exit or the ON/MODE button to

display the lter, compressor and boiler functioning times (see

secton 11.3).

Diagram 11.4

11.3 Resetting the counters to zero

This menu enables you to see the lter, compressor and

backup (boiler and electrical back-up heater) operating times.

Ensure that the heat pump is functioning.

Save the password using the ▲ and ▼ buttons on the user

interface: The word “VISUAL” appears on the interface screen.

3 4 5 76

VISUAL

Key 1 Page 3

15280

▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▲ ▼ ▲ ▼ ▲ ▲ ▼ ▼

down

Press the ▲ button 3 times to display page 3 and then press

the ON/MODE button twice.

Press the ▲ button to display:

The operational duration of the appliance, in hours (value 1).

The operational duration of the lter, in hours (value 2).

The operational duration of the compressor, in hours (value 3).

Press the ▼ button to access the fault log and reset the

counters.

Diagram 11.3

Page 36

12 User Information

12.1 User information

The user of the appliance must be informed of the handling and operation of their appliance.

Demonstrate, then instruct the User about the heating system controls operation.

Advise that to ensure the continued efcient and safe operation of the appliance it is recommended that it is checked and serviced at regular intervals. The frequency of servicing will depend upon the installation conditions and usage, but in general, once a year should be enough.

The user shall not interfere with or adjust sealed components. It is the Law that any servicing is carried out by a competent person.

Leave these instructions with the user.

13 Replacement Parts

13.1 Replacement parts

In order to guarantee the life span of all the appliance components and to keep the appliance in a good state of repair, only Glow-worm replacement parts should used when carrying out repair and maintenance works.

Only use Glow-worm replacements parts.

Ensure that the parts are tted properly in the correct position

and direction.

Page 37

14 Servicing

IMPORTANT Any work carried out on the appliance circuit must be conducted by a competent person.

14.1 Annual maintenance/service

Check that the safety components are working properly.

Check the heating circuit pressure.

Check the watertightness of the heating circuit, repair any leaks as necessary.

Check that there are no traces of rust or oil around the refrigerant circuit.

Check the heating glycol mix is correct and has not been diluted, top up as necessary

Check that the appliance components are not worn or broken.

Check that the connections on the terminal blocks are tight and no signs of overheating evident.

Check the earthing of the appliance is correct and in place.

Check the heating ow temperature and the calibration points.

Check there is no ice on the compressor.

Remove any dust, leaves or dirt build up that has collected on the air inlet of the heat pump.

If water or pressure hoses are used for cleaning ensure all electrical parts of the appliance are adequately protected.

Remove any dust build up from the electrical box. Visually check condition of PCB’s for signs of damage or overheating, repair or replace parts as necessary.

Clean the air/refrigerant heat exchanger and ensure that the

air is circulating between the ns and around the appliance.

Check nearby shrubs/trees do not impinge on unit clearances, trim back as necessary.

Visually check condition of PCB’s for signs of damage or overheating, repair or replace parts as necessary.

Visually check condition of internal electrical wiring for signs of damage or overheating, re-tighten, repair or replace parts as necessary.

Check that the fan is rotating freely and the blade and guard are undamaged.

Clean the lter on the heating circuit and reset the counter to

zero (see section 11.3 “resetting the counters to zero”).

Page 38

151413 16 17 19

6 7 8 9 10

11 12

15.1 Using the dip switches

Switch OFF (PAD) On (INPUT)

Switch1

The heat pump operates with the Envirosorb control

The heat pump operates

with an external controller

Switch2 Not used Not used

15.3 Circulator operation

The operational status of the in-built circulator is indicated by LEDs (22) and (23) of the circuit board.

Led (22) Led (23) Operational status

On Off Circulator at minimum speed

Off On Circulator at medium speed

On On Circulator at maximum speed

Operating indicator (LED 22)

On (solid) Normal operation

Flashing Heat Pump fault

15286

15232

1523315234

Key 1 Alarm indicator (Heat pump locked out) (red) 2 External control operating (yellow) 3 Heating mode indicator (yellow) 4 On/Off indicator (yellow) 5 Dip switches 6 Fan operational (red) 7 Heat pump pressure (yellow)(see explanation9.**) 8 Compressor operational (red) 9 Change over valve control (red) 10 Plate exchanger anti-freeze heater operational (red) 11 Compressor heating element operational (red) 12 3-way valve 1 activated (red) 13 3-way valve 2 (red)

14 Backup immersion heater demand (red) 15 Anti-freeze heater at the bottom of tank operational (red) 16 Back-up heating demand (red) 17 Fan coil unit operational (red) 19 Heating mode activated (red) 20 Circulator at low speed (red) 21 Circulator at medium speed (red) 22 Operating indicator (red) 23 Appliance powered on (green)

15 Main circuit board

Diagram 15.1

15.2 Heat pump pressure

The Heat pump pressure of the refrigerant circuit is indicated by LED (7) of the circuit board. If the LED is on: The circuit pressure is normal. If the LED is off: The Heat pump pressure is higher than 42 bars

Page 39

OFF

Switch

Config P1

15230

Diagram 16.2

Key

1 Conguration of the heating mode

2 Internal On/Off switch. These switches (K1 and K2) are used when servicing the appliance.

K1 DOES NOT SWITCH THE UNIT OFF - it is used to stop the compressor from running when servicing is taking place

K2 - reverses the control of the heat pump. i.e. if the unit is working in heating mode the swich changes operation to cooling and vica versa

15 Main circuit board

15.4 Conguration of the service switches.

K1 & K2 switches

Page 40

Glow-worm, Nottingham Road, Belper, Derbyshire. DE56 1JT

Because of our constant endeavour for improvement, details may vary slightly from those shown in these instructions.

0020084985-02 06.09