alphainnoTec LWA Series User manual
UK
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
3
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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
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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.
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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).
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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
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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.
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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.
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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
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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
baes 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.
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Example: Removing the upper facing panel on
the switch box side
3. The top cover of the unit was fastened by the up-
per facing panels. After removal of the upper fac-
ing panels, the top cover is loose. Remove top
cover and set securely aside.
4.
IMPORTANT
4.1.
the top side of the frame.
2 Brass bushing on frame
4.2.
side and water connection side.
side
5. Return top cover to frame.
6. Suspend upper facing panels in the top cover. Bolt to
the frame at bottom.
now carry out mounting and installation work on
the unit, and afterwards attach the lower facades
( “12 Electrical installation“, from page 14).
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6 Installation of hydraulic system
1. Install the outside pipes of the heating circuit be-
neath the frost line.
2. Flush the heating circuit thoroughly before con-
necting it to the heating system.
IMPORTANT
Damage to the copper pipes due to unacceptable
loading!
Secure all connections against twisting.
Connect the unit to the heating circuit according
to the hydraulic diagram for the respective model.
Cross-sections and lengths of the pipes for the
heating circuit are adequately dimensioned.
.
1. If the unit is closed, open the lower facing panel
on the water connection side.
2.
the heat pump side.
NOTE
necessary.
3. Connect the unit to the pipes of the heating circuit
via vibration decouplers.
They must be installed in order to prevent damage
from vibrations to the pipes.
NOTE
If an existing system is being replaced, the
old vibration decoupling may not be reused.
Vibration decouplers are available as acces-
sories.
3 Condensate water hose
4. Install the condensate water hose in the unit so
that there is no contact with refrigerant pipes.
5. Make sure that frost-free condensate discharge is
ensured.
6. Seal empty pipes on unit side.
7. Insert a vent at the highest point of the heating cir-
cuit.
8. Ensure that the working overpressures (“Tech -
exceeded.
Condensate discharge
The condensate from the air must be discharged frost-
free via a condensate pipe with a minimum diameter of
50 mm. For underlying surfaces that are permeable to
-
tically at least 90 cm into the ground. If the condensate
is discharged into drainage or sewage systems, install
frost-free with gradient.
Discharge of the condensate into the sewage system
is permitted only via a funnel siphon, which must be
accessible at all times.
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7 Pressure relief
1. Equip the heating circuit in accordance with local
standards and directives with a safety valve and
an expansion tank.
2. -
es and non-return valves in the heating circuit.
8
The hydraulic connection of the heat pump requires a
In mono-energetic air/water systems, integrate the
9 Circulating pumps
NOTE
Do not use regulated circulating pumps.
Circulating pumps for the heating circuit and the do-
mestic hot water circuit must be multi-stage. They
must be able to deliver at least the minimum hot water
“Technical data / scope of supply“, page 19
10 Domestic hot water
preparation
Domestic hot water heating with the heat pump re-
quires an additional hot water circuit, parallel to the
heating circuit. Make sure that the heating water
heating circuit.
11 Domestic hot water tank
If the heat pump will be used for heating hot water,
you must integrate special hot-water tanks in the heat
pump system.
Select the hot water tank volume in such a way
that the required amount of drinking water is avail-
The heat exchanger surface of the hot water tank must
be dimensioned so that the heating capacity of the
heat pump is transferred with minimal spreading.
from. They are optimized for use with your heat pump.
Integrate the hot-water tank in the heat pump sys-
tem corresponding to the hydraulic diagram for
your system.
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12 Electrical installation
12.1 Establishing the electrical
connections
IMPORTANT
Irreparable damage to the compressor due to wrong
compressor load infeed.
Basic information on the electrical connection
company may apply to electrical connections
Fit the power supply for the heat pump
with an all-pole miniature circuit-breaker
with at least 3 mm contact spacing (per
IEC 60947-2)
Note the level of the tripping current
( “Technical data / scope of supply“,
page 19)
Comply with the electromagnetic compatibility
regulations (EMC regulations)
Power connection
The power is connected at the connection box on the
water connection side.
1. If the unit is closed, open lower facing panel on the
water connection side.
2. Open connection box.
1 Electrical connection box: Mains
connection of the heat pump
3. Connect power cable to the connection box (Elec-
tric heating element on-site).
4. Close connection box.
5. Install power cable in a conduit as far as where it
enters the building and from there on to the fuse
box.
6. Connect power cable to power supply.
IMPORTANT
If using the unit in 3~230V systems, please note
that the residual-current circuit breaker (RCCB)
used must be AC-DC sensitive.
Heat pump side connection of the control
and sensor wires
The heat pump is connected to the heating and heat
pump regulator by means of the control and sensor
wires. They are connected at the electric switch cabi-
net on the switch box side of the heat pump.
NOTE
In order to enable unhinging of the electric
switch box in the event that customer service
is necessary, the control and sensor wires in
the heat pump must have an excess length of
about 15 cm.
1. Screw control and sensor wires to the two con-
nectors (at the bottom on the right-hand side of
the electrical switch box).
2. Guide control and sensor wires inside the unit to
the water connection side.
3. Guide control and sensor wires out of the unit.
4. Install control and sensor wires in a conduit as far
as where they enter the building and from there
on to the heating and heat pump regulator.
5. Connect control and sensor wires to the heating
and heat pump regulator according to the termi-
nal connection diagram and the circuit diagrams.
-
grams“, from page 28
Operating manual of the heating and heat pump
regulator.
6. Seal empty pipes on unit side.
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7. Screw facing panels onto the heat pump.
Place lower facing panels diagonally into the
frame, close at top and fasten with in quick-re-
lease screws.
Example: Attaching the lower facing panel on
the switch box side
13
13.1 Heating water quality
NOTE
For detailed information refer, among
other things, to the VDI Guidelines
2035 “Vermeidung von Schäden in
damage in hot water heating systems)
Required pH value: 8.2 … 10;
for aluminium materials:
pH value: 8.2 … 8.5
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).
Advantages of low-salt operation:
Low corrosion-promoting properties
No formation of mineral scale
Ideal for closed heating circuits
the system
If the required water quality is not achieved, con-
sult a company specialising in the treatment of he-
ating water.
Keep a system log for hot water heating systems
in which relevant planning data is entered (VDI
2035).
Antifreeze in the heating circuit
For air/water heat pumps installed outdoors, it is not
heating circuit.
The heat pumps have safety devices that prevent
the water from freezing, even when the heating is
-
mains switched on and is not disconnected from the
mains. Should there be a risk of frost, the circulation
pumps are activated.
The following points must be observed if antifreeze is
added, depending on the concentration of the mixture:
Heat output of the heat pump is reduced
COP value becomes worse
In the case of on-site circulating pumps, the deliv-
ery rate is reduced; in the case of integrated cir-
The compatibility of the material of the compo-
nents used with the antifreeze mixture must be
ensured
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13.2
circuit
Outlet pipe of the safety valve is connected.
Ensure that the set pressure of the safety valve is
not exceeded.
1. Vent system at the respective highest point.
2. Additionally open the vent valve at the condenser
of the heat pump. Vent the condenser.
1 Vent valve, above the hydraulic
connections in the unit
14 Insulation of hydraulic
connections
Insulate hydraulic lines in accordance with the local
regulations.
1.
2. Perform a pressure test and check for leaks.
3. Insulate the vibration decouplers and the outside
pipes of the heating circuit so that they are sealed
4.
5. Insulate the condensate drain in a frost-proof
manner.
6. The unit must be completely closed on all sides to
ensure rodent protection.
15
NOTE
The activities in this section are only
necessary for the integration of storage
tanks in series
Complete the work steps quickly, otherwise
the maximum return temperature may be
exceeded and the heat pump switches to
high-pressure fault
valve to the right to increase the
drop), turn it to the left to reduce it
System is running in heating mode (ideally in cold
condition).
1. In case of low heating curve: Set the system to
Operating manual of the heating and heat pump
controller.
2.
3. -
4.
heating and heat pump controller.
Operating manual of the heating and heat pump
controller.
5. Turn the adjusting knob (①)
(②)
and return temperature is set as follows:
Outdoor temperature Recommended
settings
-10 °C 4 K
0 °C 5 K
10 °C 8 K
20 °C 9 K
30 °C 10 K
6. Open valves to heating circuit.
7.
pump controller.
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16 Commissioning
CAUTION
Prior to commissioning the unit, the air
ow baes must be mounted and the fac-
ing panels closed.
Relevant planning & design data of the system is
documented in full.
The relevant energy supply company has been
The system is air-free.
Installation check using the general checklist has
been completed successfully.
1. -
pletely:
available at the compressor
The system is installed and mounted according to
this operating manual
The electrical installation has been carried out
properly according to this operating manual and
the local regulations
The power supply for the heat pump is equipped
with an all-pole circuit-breaker with at least 3 mm
contact spacing (IEC 60947-2)
The tripping current is complied with
The pipe systems and components of the system
are tight
2.
for the heat pump systems.
3. In Germany: Send notice of completion for heat
pump systems and general checklist to the man-
ufacturer’s factory customer service depart-
ment.
In other countries: Send notice of completion for
heat pump systems and general checklist to the
manufacturer’s local partner.
4. Arrange for the heat pump system to be com-
missioned by the manufacturer’s authorised after
sales service for a fee.
17 Maintenance
NOTE
We recommend that you conclude a mainte-
nance agreement with an accredited heating
company.
17.1 Basic principles
The cooling circuit of the heat pump requires no
regular maintenance.
Local regulations– e.g. EU Regulation (EC) 517/2014
– among other things, require leak checks beforehand
and/or for a logbook to be kept for certain heat pumps.
Ensure compliance with local regulations with re-
17. 2 Maintenance as required
Checking and cleaning the components of the
heating circuit, e.g. valves, expansion vessels,
Test the function of the safety valve for the heating
circuit
Always regularly control for unimpeded air in-
feed accordingly. Constrictions or even blockages
which, for example occur
when applying house insulation with polysty-
rene balls
-
tons etc.)
through foliage, snow, icing or similar weath-
er-related deposits
through vegetation (bushes, tall grass etc.)
etc.)
and which must be prevented and/or removed im-
mediately
Check regularly to ensure that the condensate
can drain out of the unit freely, without obstruc-
tion. To this end, check the condensate pan in the
unit and the evaporator regularly for dirt / block-
ages and clean as necessary.
18 Subject to change without notice | 83031200dUK | ait-deutschland GmbH
Check evaporator and condensate pan
and clean if required
Unit is safely disconnected from the power sup-
ply and secured against being switched back on
again.
1. Remove the lower and upper facing panels on
one side. Check the condensation pan area for
soiling.
2. Clean the condensation pan area if necessary.
For better access to the condensation pan area,
remove the lower and upper facing panels on the
opposite side if necessary.
3. Inspect the evaporator. If cleaning is required, re-
and clean the evaporator.
4. -
ing panels to the unit. Finally, restore the power
supply.
17.3
the manufacturer’s instructions.
-
condenser thoroughly with water.
17. 4 Yearly maintenance
Record the quality of the heating water analytically.
suitable measures without delay.
18 Faults
Read out the cause of the fault via the diagnostics
program of the heating and heat pump controller.
Contact the local partner of the manufacturer or
the factory’s customer service. Have the fault
message and unit number to hand.
“Nameplates“, page 7
19 Dismantling and disposal
19.1 Dismantling
Unit is safely disconnected from the power sup-
ply and secured against being switched back on
again.
Collect all media safely.
Separate components by their materials.
19.2 Disposal and recycling
Dispose of environmentally hazardous media in
accordance with local regulations (e.g. refrigerant,
compressor oil).
Recycle or ensure proper disposal of unit compo-
nents and packaging materials in accordance with
local regulations.
IMPORTANT
Before scrapping the heating and heat pump regulator,
battery can be pushed out using a screwdriver. Dis-
pose of battery and electronic components in keeping
with environmental considerations.
19
Subject to change without notice | 83031200dUK | ait-deutschland GmbH
Performance data Values in brackets: (1 Compressor) LW 300A
Heating capacity | COP for A7/W35 acc. to EN14511 kW | COP 32,50(19,78)|3,80(4,04)
for A7/W45 acc. to EN14511 kW | COP 33,64(18,99)|3,20(3,23)
for A2/W35 acc. to EN14511 kW | COP 29,67(16,97)|3,41(3,52)
for A10/W35 acc. to EN14511 kW | COP 39,43(22,42)|4,22(4,76)
for A-7/W35 acc. to EN14511 kW | COP 24,28(13,45)|2,77(2,78)
for A-15/W65 acc. to EN14511 kW | COP – | –
for A-7/W55 acc. to EN 14511 kW | COP 24,28(13,45)|1,86(1,90)
Cooling capacity | EER for A35/W18 kW | EER – | –
for A35/W7 kW | EER – | –
Operating limits
Heating circuit return min. | Heating circuit flow max. Heating within heat source min./max. °C 20 | 45
Heating circuit return min. | Heating circuit flow max. Cooling within heat source min./max. °C – | –
Heat source heating min. I max. °C -20 | 35
Heat source cooling min. I max. °C – | –
Additional operating points …A-5/W60
Sound
Sound pressure level at 1 m distance from edge of unit inside min. | Night | max. dB(A) – | – | –
Sound pressure level at 1 m distance from edge of unit outside min. | Night | max. dB(A) 52 | – | 58
Sound power level inside min. | Night | max. dB(A) – | – | –
Sound power level outside 1) min. | Night | max. dB(A) 66 | – | 69
Sound power level acc. to EN12102 inside | outside dB(A) – | 66
Tonality | Low-frequency dB(A) | • yes – no – | –
Heat source
Air flow rate at maximum external pressing | Maximum external pressure m³/h | Pa 7800 | 25
Heating circuit
Flow rate (pipe dimensioning) I Min. volume buffer tank in series I Min. volume separation buffer tank l/h | l | l 6000 | – | –
Free pressing | Pressure loss | Flow rate bar | bar | l/h 0,04 (–) | 6000
Max. allowable operating pressure bar 3
Circulation pump control range min. I max. l/h – | –
Hot gas use
Flow rate (pipe dimensioning) l/h –
Free pressing | Pressure loss | Flow rate bar | bar | l/h – | – | –
General unit data
Total weight kg 480
Weight of individual components kg | kg | kg – | – | –
Refrigerant type | Refrigerant capacity … | kg R448A | 10,0
Electrics
Voltage code | all-pole fuse protection for heat pump *)**) … | A – | –
Voltage code | all-pole fuse protection for heat pump *) + electric heating element **) … | A 3~N/PE/400V/50Hz | C32
Voltage code | Control voltage fuse protection **) … | A 1~N/PE/230V/50Hz | B10
Voltage code | Electric heating element fuse protection **) … | A – | –
HP*): effect. power consumption A7/W35 EN14511 I Electric consumption I cosφ kW | A | … 8,65 (4,87)|19,5(10,2)|0,64(0,75)
HP*): max. machine current I max. power consumption within the operating limits A | kW 28,5 | 15,6
Starting current: direct | with soft starter A | A < 101 | 38
Degree of protection IP 24
Residual current circuit breaker if required type A
Electric heating element output 3 | 2 | 1 phase kW | kW | kW – | – | –
Circulation pump power consumption, heating circuit min. I max. W– | –
Other unit information
Safety valve heating circuit | Response pressure
included in scope of supply: • yes – no | bar – | –
Buffer tank | Volume included in scope of supply: • yes – no | l – | –
Heating circuit expansion vessel | Volume | Prepressure incl. in scope of supply: • yes – no | l | bar – | – | –
Overflow valve | Changeover valve, heating - domestic hot water integrated: • yes – no – | –
Heating circuit vibration decoupling incl. in scope of supply or integrated: • yes – no –
Controller I Heat quantity recording I Extension board incl. in scope of supply or integrated: • yes – no • | – | –
813600a
*) compressor only, **) note local regulations 1) Indoor and outdoor installation l Index: g
For indoor installation: Intake 1.5m air duct, Blow-out 1.5m air duct + air duct bend (original accessories)
LW 300A Technical data / scope of supply
20 Subject to change without notice | 83031200dUK | ait-deutschland GmbH
823310a
7
12
17
22
27
32
37
42
47
52
-20 -15 -10 -5 0 5 10 15 20 25 30 35
Temp„ (°C)
Qh (kW)
35°C 1VD
55°C 1VD
35°C 2VD
55°C 2VD
1
2
3
4
5
6
7
-20 -15 -10 -5 0 5 10 15 20 25 30 35
Temp„ (°C)
COP
4
5
6
7
8
9
10
11
12
13
14
-20 -15 -10 -5 0 5 10 15 20 25 30 35
Temp„ (°C)
Pe (kW)
0,000
0,025
0,050
0,075
0,100
0,125
0,0 1,0 2,0 3,0 4,0 5,0 6,0 7,0 8,0 9,0 10,0
“” (m³/h)
∆p (bar)
”p∆
15
20
25
30
35
40
45
50
55
60
65
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40
Temp„ (°C)
Temp” (C°)
Legende: UK823310a
“”“”
Temp”Temp” Temperature heating water
Temp„Temp„ Temperature heat source
QhQh Heating capacity
PePe Power consumption
COPCOP
∆p”∆p” Pressure loss heat pump
VDVD Compressor(s)
Flow
- - - - - -- - - - - - Return
LW 300APerformance curves
This manual suits for next models
2
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