AlphainnoTec LWA Series User manual

83031200dUK

Air/Water Heat Pumps

Outdoor installation

Operating Manual

LW 300A

2Subject to change without notice | 83031200dUK | ait-deutschland GmbH

Table of contents

1 About this operating manual ...................... 3

1.1 Validity....................................................... 3

1.2 Reference documents............................... 3

1.3 Symbols and markings.............................. 3

1.4 Contact...................................................... 4

2 Safety ............................................................... 4

2.1 Intended use ............................................. 4

 ............................ 4

2.3 Personal protective equipment ................. 4

2.4 Residual risks............................................ 4

2.5 Disposal .................................................... 5

2.6 Avoid damage to property......................... 5

3 Description...................................................... 6

3.1 Delivery condition ..................................... 6

3.2 Layout ....................................................... 6

3.3 Accessories............................................... 7

3.4 Function .................................................... 7

4 Operation and care....................................... 7

4.1 Energy-conscious and environmentally-

aware operation ........................................ 7

4.2 Care .......................................................... 7

5 Scope of supply, storage, transport and

installation ....................................................... 8

5.1 Scope of supply ........................................ 8

5.2 Storage...................................................... 8

5.3 Transport................................................... 8

5.4 Installation................................................. 9

 󰀪 ................... 10

6 Installation of hydraulic system................ 12

7 Pressure relief.............................................. 13

 󰀨..................................................... 13

9 Circulating pumps ....................................... 13

10 Domestic hot water preparation.............. 13

11 Domestic hot water tank ........................... 13

12 Electrical installation................................... 14

  ...................... 15

13.1 Heating water quality .............................. 15

 ...... 16

14 Insulation of hydraulic connections ........ 16

 ................................ 16

16 Commissioning ............................................ 17

17 Maintenance................................................. 17

17.1 Basic principles ....................................... 17

17.2 Maintenance as required ........................ 17

  ..................... 18

17.4 Yearly maintenance................................. 18

18 Faults.............................................................. 18

19 Dismantling and disposal.......................... 18

19.1 Dismantling ............................................. 18

19.2 Disposal and recycling ............................ 18

Technical data / scope of supply ............ 19

Performance curves................................... 20

Dimensional drawings................................ 21

Installation plans.......................................... 22

Installation plan ................................................ 22

Installation plan Cascade 1/2 ........................... 23

Installation plan Cascade 2/2........................... 24

Hydraulic integration................................... 25

󰀨...................................... 25

Keys hydraulic integration ................................ 26

Terminal diagram ........................................ 27

Circuit diagrams........................................... 28

EC Declaration of Conformity.................. 31

Subject to change without notice | 83031200dUK | ait-deutschland GmbH

1 About this operating manual

This operating manual is part of the unit.

Before working on or with the unit read the

operating manual carefully and follow it for all

activities at all times, especially the warnings and

safety instructions.

Keep the operating manual to hand at the unit and

hand over to the new owner if the unit changes

hands.

If you have any questions or anything is unclear,

ask the local partner of the manufacturer or the

factory’s customer service.

Note and follow all reference documents.

1.1 Validity



by the nameplates and unit stickers

( “Nameplates“,

page 7).

1.2 Reference documents

The following documents contain additional

information to this operating manual:

Planning & design manual, hydraulic integration

Operating manual of the heating and heat pump

controller

Brief description of the heat pump controller

Operating manual of the Comfort board 2.0

(accessories)

Log book

1.3 Symbols and markings



Symbol Meaning

Safety-relevant information.

Warning of physical injuries.

DANGER Indicates imminent danger resulting

in severe injuries or death.

WARNING Indicates a potentially dangerous

situation, which can result in severe

injuries or death.

CAUTION Indicates a potentially dangerous

situation, which can result in

moderate or minor injuries.

IMPORTANT Indicates a potentially dangerous

situation, which can result in

property damage.

Symbols in the document

Symbol Meaning



Information for the owner/operator

Requirement for action

Single step action prompt

1., 2., 3., … Numbered step within a multi-step

action prompt. Keep to the given

order.

Additional information, e.g. a tip on

making work easier, information on

standards

Reference to further information

elsewhere in the operating manual

or in another document

Listing

4Subject to change without notice | 83031200dUK | ait-deutschland GmbH

1.4 Contact

Addresses for purchasing accessories, for service

cases or for answers to questions about the unit and

this operating manual can be found on the internet and

are kept up-to-date:

Germany: www.alpha-innotec.de

EU: www.alpha-innotec.com

2 Safety

Only use the unit if it is in proper technical condition

and only use it as intended, safely and aware of the

hazards, and follow this operating manual.

2.1 Intended use

The unit is solely intended for the following functions:

Heating

Domestic hot water preparation (optional, with ac-

cessories)

Proper use includes complying with the operating

conditions ( “Technical data / scope of sup-

ply“, page 19) and the operating manual and

noting and following the reference documents.

When using the local regulations note: laws,

standards, guidelines, directives.

All other uses of the unit are not as intended.

2.2 

The operating manuals supplied with the product are

intended for all users of the product.

The operation of the product via the heating and he-

at pump control and work on the product which is in-

tended for end customers / operators is suitable for all

age groups of persons who are able to understand the

activities and the resulting consequences and can car-

ry out the necessary activities.

Children and adults who are not experienced in hand-

ling the product and do not understand the necessa-

ry activities and the resulting consequences must be

instructed and, if necessary, supervised by persons

experienced in handling the product and who are re-

sponsible for safety.

Children must not play with the product.



All instructional information in this operating manual is



        

the work on the unit safety and correctly. Interference

     

injuries and damage to property.

Ensure that the personnel is familiar with the local

regulations, especially those on safe and hazard-

aware working.

 

only to carry out work on the electrics and

electronics.

        

other work on the system, e.g.

Heating installer

Plumbing installer

Refrigeration system installer (maintenance

work)

During the warranty and guarantee period, service

work and repairs may only be carried out by personnel

authorised by the manufacturer.

2.3 Personal protective equipment

There is a risk of cutting your hands on sharp edges

of the unit.

Wear cut-resistant protective gloves during trans-

port.

2.4 Residual risks

Electric shock

Components in the unit are live with life-threatening

voltage. Before opening the unit panelling:

Disconnect unit from power supply.

Protect unit against being switched back on again.

Existing earthing connections within housings or on

mounting plates must not be altered. If this should nev-

ertheless be necessary in the course of repair or as-

sembly work:

Restore earthing connections to their original con-

dition after completion of the work.

Subject to change without notice | 83031200dUK | ait-deutschland GmbH

Injury due to moving parts

 󰀪

Injuries and environmental damage due to

refrigerant

The unit contains harmful and environmentally

dangerous refrigerant. If refrigerant leaks from the unit:

1. 󰀨

2. Notify authorised after sales service.

2.5 Disposal

Media harmful to the environment

Improper disposal of environmentally harmful media

(refrigerant) damages the environment:

Collect media safely.

Dispose of the media in an environmentally

compatible way in accordance with the local

regulations.

2.6 Avoid damage to property

The ambient air at the heat pump installation site, as

well as the air drawn in as a heat source, must not

contain any corrosive constituents!

Constituents such as

Ammonia

Sulphur

Chlorine

Salt

 

can cause damage to the heat pump, which could lead

to the complete failure / destruction of the heat pump!

Decommissioning/emptying heating

If the system / heat pump is decommissioned or



to ensure that the condenser and any heat exchangers

present have been completely emptied in the event

of frost. Residual water in heat exchangers and

condensers can result in damage to components.

Empty system and condenser completely, open

vent valves.

Blast out with compressed air if necessary.

Improper action

Requirements for minimum scale and corrosion

damage in hot water heating systems:

Proper planning, design and commissioning

Closed system with regard to corrosion

Integration of an adequately dimensioned

pressure maintaining device

Use of demineralised heating water (VE water) or

water corresponding to the VDI 2035 norm

Regular servicing and maintenance

If a system is not planned, designed, started up and

operated in accordance with the given requirements,

there is a risk that the following damage and faults will

occur:

Malfunctions and the failure of components, e.g.

pumps, valves

Internal and external leaks, e.g. from heat

exchangers

Cross-section reduction and blockages in

components, e.g. heat exchanger, pipes, pumps

Material fatigue

Gas bubbles and gas cushion formation

(cavitation)

 󰀨

coatings, deposits, and associated noises, e.g.



Note and follow the information in this operating

manual for all work on and with the unit.



water in the heating circuit

 󰀩         

generator and the heating components depend

decisively on the quality of the heating water.

        

calcium precipitates as scale. Limescale deposits

form on the heat transfer surfaces of the heating. The

󰀩       

cases the heat exchangers are damaged.

Fill the system with deionised heating water

(VE water) or with water corresponding to the VDI

2035 norm only (low-salt operation of the system).

6Subject to change without notice | 83031200dUK | ait-deutschland GmbH

3 Description

3.1 Delivery condition

Packing unit 1:

 󰀪

separate box)

Packing unit 2:

Basis unit with fully hermetically enclosed

compressor, all safety-related components

for monitoring of cooling circuit and hose for

condensate discharge (connected on heat

pump side).

3.2 Layout

Basic components

NOTE

This section essentially names the compo-



in this operating manual.

1 Fan

2 Water connection side:

Hydraulic connections and junction box for

mains connection (each inside the unit)

3 Area behind the facing panel:

cooling circuit components with condenser,

compressor, expansion valves

4 Switch box side

5 Electrical switch box

6 Condensate pan

7 Evaporator

Subject to change without notice | 83031200dUK | ait-deutschland GmbH

Nameplates

Nameplates are attached to the following places on

the unit when it is delivered:

outside: On the lower facing panel of the water

connection side

inside: On the bottom of the unit by the electrical

switch box

The nameplates contain the following information at

the top:

Unit type, product number

Serial number

The nameplates also contains an overview of the most

important technical data.

3.3 Accessories

Accessories necessary for operation

The heating and heat pump controller, as wall-mount-

ed controller, is part of the scope of delivery.

Control and sensor cables are functionally necessary

accessories, which you must order separately.

The heat pump is a functioning unit only with the heat-

ing and heat pump regulator and the control and sen-

sor wires.

Heating and heat pump regulator

(for wall mounting)

Control and sensor wires are available in various

lengths, as required.

Additional accessories

The following accessories are available for the unit

through the manufacturer’s local partner:

Installation accessories (vibration decouplers)

Domestic hot water tanks

󰀨

Electrical heating elements

Room control panel to control the main functions

from the living room

Comfort board 2.0

3.4 Function

Liquid refrigerant is evaporated (evaporator), the energy

for this process is environmental heat and comes from

the outside air. The gaseous refrigerant is compressed

(compressor), this causes the pressure to rise and there-

fore the temperature too. The gaseous refrigerant at a



The high temperature is hereby discharged to the

heating water and is used in the heating circuit. The

liquid refrigerant at a high pressure and high tempera-

ture is depressurised (expansion valve). The pressure

and temperature drop and the process begins again.

The heated heating water can be used for the domes-

tic hot water charging or for the building heating. The

temperatures required and use are controlled by the

heat pump controller. Reheating, drying out screed or

increasing the domestic hot water temperature can be

carried out using an electric heating element (acces-

sory), which is activated by the heat pump controller

as and when necessary.

4 Operation and care

NOTE

The unit is operated via the control unit of the

heating and heat pump controller ( Oper-

ating manual of the heating and heat pump

controller).

4.1 Energy-conscious and

environmentally-aware operation

The generally accepted requirements for an energy-

conscious and environmentally-aware operation of a

heating system also apply when using a heat pump.

The most important measures include:

 

No unnecessarily high domestic hot water

temperature (note and follow local regulations)

Do not open windows with gap / tilt open

(continuous ventilation), but instead open wide for

a short time (shock ventilation).

Make sure that the controller settings are correct

4.2 Care

Wipe down the outside of the unit only using a damp

cloth or cloth with mild cleaning agent (washing-up liq-

uid, neutral cleaning agent). Do not use any harsh,

abrasive, acid or chlorine-based cleaning agents.

8Subject to change without notice | 83031200dUK | ait-deutschland GmbH

The hydraulic connections are not designed for me-

chanical loads.

Do not lift or transport the unit by the hydraulic

connections.

Transport the unit to the place of installation pack-

aged and secured on the wooden pallet.

Lifting the unit with a crane

1. Guide lifting straps under the wooden pallet. On



Example: Crane lifting with cross beam

2. Insert laths or beams between the lifting straps and

the unit in order to prevent damage to the housing.

WARNING

Lifting straps should not be too close to-

gether or too near the center; otherwise the

unit may tip!

5 Scope of supply, storage,

transport and installation

IMPORTANT

Damage to the housing and the unit components

due to heavy objects.

Do not place any objects on the unit which are

heavier than 30 kg.

IMPORTANT

Do not tilt the unit more than a maximum

of 45° (in any direction).

5.1 Scope of supply

 󰀪

The accompanying parts package contains:

 -



Documents (manuals, ERP data and label)

Nameplate stickers

Check delivery immediately after receipt for exter-

nally visible damage and completeness.

Notify supplier of any defects immediately.

5.2 Storage

Do not unpack the unit until directly before instal-

lation.

Store unit protected against

Moisture/damp

Frost

Dust and dirt

5.3 Transport

Notes on safe transport

The unit is heavy ( “Technical data / scope of sup-

ply“, page 19). There is a risk of injuries or damage

to property if the unit falls or overturns.

There is a risk of cutting your hands on sharp edges

of the unit.

Wear cut-resistant protective gloves.

Subject to change without notice | 83031200dUK | ait-deutschland GmbH

IMPORTANT

Guide lifting straps past the fan on the side. Make

sure the straps do not press against the fan during

transport.

3. Park the unit at the installation site so that the up-

-

per edge of the foundation.

Transport with a pallet truck

Park the unit at the installation site so that the up-

-

per edge of the foundation.

5.4 Installation

Installation site requirements

Perform installation outdoors only.

Clearance dimensions are met

“Installation plans“, from page 22

Free air intake and blowing air are possible with-

out any air short-circuit.

The surface is suitable for installation of the unit:

The foundation is level and horizontal

The surface and the foundation have a load-

󰀩 unit’s weight

Ground surface in the air outlet area of the heat

pump is permeable to water

Unpacking

1. -

age the unit.

2. Dispose of the transport and packaging material

in an environmentally friendly way and in accord-

ance with local regulations.

Set up the unit

CAUTION

In the air outlet area the air temperature is

approx. 5 K below the ambient temperature.

Under certain climatic conditions, an ice lay-

er can therefore form in the air outlet area.

Install the heat pump such that the air blow-

er does not discharge into footpath areas

NOTE

Always observe the installation plan. Note the

minimum clearances.

“Installation plans“, from page 22

NOTE

Set up the unit so that the switch box side is ac-

cessible at all times.

NOTE

The noise emissions of the heat pumps must

be taken into account in the respective instal-

lation plans for air/water heat pumps. The re-

spective regional regulations must be ob-

served.

1. Remove lateral battening on the wooden pallet on

the foundation side.

Example:Unit on wooden pallet, fan facing away

from foundation

1 Foundation at the installation site

2 Lateral battening on the wooden pallet

10 Subject to change without notice | 83031200dUK | ait-deutschland GmbH

2. Push the unit from the wooden pallet onto the

foundation (possibly with the help of pipes placed

under the appliance). Make sure that the frame of

the unit is in full contact with the foundation.

5.5 󰀪

CAUTION

Unit has rotating parts.

For safety reasons, mount the two air ow

ba󰀪es on the unit before continuing with

any other work.

1. If you have not already done so, remove low-

er facing panels on the switch cabinet and water

connection side of the unit.

1.1. To do so, loosen the two quick-release screws on

the lower facing panels.

1.2. Pull each facing panel forward, detach from the unit

and set securely aside.

Example: Removing the lower facing panel on

the switch box side

2. Remove upper facing panels from unit.

2.1. To do so, loosen the two screws on the lower edg-

es of the upper facing panels.

2.2. Pull each facing panel downward and forward, de-

tach from top cover of unit and set securely aside.

This manual suits for next models

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