Novelan LA RX Series User manual

Operating Manual
UK
83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Air/Water Heat Pumps
Outdoor Installation
LA … RX

283051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Please read rst
This operating manual provides important
informationon the handling of the unit. It is an integral
part of the product and must be stored so that it is
accessible in the immediate vicinity of the unit. It must
remain available throughout the entire service life of the
unit. It must be handed over to subsequent owners or
operators of the unit.
Read the operating manual before working on or
operating the unit. This applies in particular to the
chapter on safety. Always follow all instructions
completely and without restrictions.
It is possible that this operating manual may contain in-
structions that seem incomprehensible or unclear. In
case of questions or uncertainty, contact the factory cu-
stomer service department or the manufacturer’s local
service partner.
Since this operating manual was written for several
dierent models of the unit, always comply with the
parameters for the respective model.
This operating manual is intended only for persons
assigned to work on or operate the unit. Treat all
constituent parts condentially. The information
contained herein is protected by copyright. No part
of this information may be reproduced, transmitted,
copied, stored in electronic data systems or translated
into another language, either wholly or in part, without
the express written permission of the manufacturer.
Symbols
The following symbols are used in the operating manu-
al. They have the following meaning:
Information for users.
Information or instructions for qualied
personnel.
DANGER!
Indicates immediate impending danger re-
sulting in severe injuries or death.
WARNING!
Indicates a potentially serious situation that
could result in severe injuries or death.
WARNING!
Indicates a potentially dangerous situation
that could result in medium or slight injuries.
ATTENTION
Indicates a potentially dangerous situation,
which could result in property damage.
NOTICE.
Emphasised information.
€ENERGY SAVING TIP
Indicates suggestions that help to save energy,
raw materials and costs.
Reference to other sections of the operating
manual.
Reference to other documents of the manufac-
turer.

383051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Inhaltsverzeichnis
INFORMATION FOR USERS AND QUALIFIED
PERSONNEL
PLEASE READ FIRST.......................................................................2
SYMBOLS..........................................................................................2
INTENDED USE................................................................................4
DISCLAIMER.....................................................................................4
EC CONFORMITY............................................................................4
SAFETY AND SECURITY................................................................4
CUSTOMER SERVICES....................................................................5
WARRANTY / GUARANTEE ...........................................................5
WASTE DISPOSAL...........................................................................5
OPERATING PRINCIPLE OF HEAT PUMPS ................................6
AREA OF UTILISATION..................................................................6
HEAT QUANTITY RECORDING.....................................................6
OPERATION......................................................................................6
CARE OF THE UNIT.........................................................................7
MAINTENANCE OF THE UNIT......................................................7
Cleaning and Flushing unit components ..........................7
MALFUNCTIONS.............................................................................7
INSTRUCTIONS FOR QUALIFIED PERSONNEL
SCOPE OF DELIVERY......................................................................8
INSTALLATION AND ASSEMBLY.................................................9
Installation location ................................................................9
Transport to installation location........................................9
Sound........................................................................................10
Installation...............................................................................11
Attaching the air flow baffles.............................................13
Installation / connection to heating circuit ....................15
Condensate discharge..........................................................17
PRESSURE RELIEF .........................................................................17
SEPARATING BUFFER TANK .......................................................17
CIRCULATING PUMPS .................................................................17
WATER HEATING ...........................................................................17
HOTWATER TANK ........................................................................17
ELECTRICAL CONNECTIONS .....................................................18
FLUSHING, FILLING AND BLEEDING THE SYSTEM ..............20
Water quality of the fill and additional water in hot
water heating systems according to VDI2035.........20
INSULATING THE HYDRAULIC CONNECTIONS ....................21
COMMISSIONING .........................................................................22
DISMANTLING...............................................................................23
TECHNICAL DATA/ SCOPE OF DELIVERY ...............................24
PERFORMANCE CURVES
Heating capacity/COP / power consumption /
Heat pump pressure loss
Heating LA 9RX.......................................................................26
Cooling LA 9RX.......................................................................27
Heating LA 14RX.....................................................................28
Cooling LA 14RX.....................................................................29
DIMENSIONAL DRAWINGS AND INSTALLATION PLANS
Dimensional drawings..........................................................30
Installation plans
LA 9RX… ..................................................................................31
LA 14RX.....................................................................................32
HYDRAULIC CONNECTION
Separate buffer tank .............................................................33
Legend Hydraulic integration.............................................34
TERMINAL DIAGRAMS
LA 9RX • LA 14RX....................................................................35
Comfort board........................................................................36
CIRCUIT DIAGRAMS.....................................................................37
EC DECLARATION OF CONFORMITY.......................................39

483051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Intended use
The unit may be used only for the intended purpose.
That means:
•for heating.
•for cooling.
•for heating hot water.
The unit may be operated only within its technical pa-
rameters.
Overview “Technical data / scope of delivery”.
NOTICE
Notify the responsible power supply compa-
ny of the use of a heat pump or heat pump
system.
Disclaimer
The manufacturer will not be liable for damage resulting
from unauthorised use of the unit.
The manufacturer’s liability will also be voided in the
following cases:
•if work is performed on the unit and its compon-
ents in a manner that does not comply with the
terms of this operating manual;
• if work is performed on the unit and its compon-
ents in an improper manner;
•if work is performed on the unit that is not
described in this operating manual, and this work
was not expressly approved in writing by the
manufacturer;
•if the unit or components in the unit are modied,
redesigned or removed without the express
written permission of the manufacturer.
EC conformity
The unit bears the CE mark of conformity.
EC declaration of conformity
Safety and Security
The unit is operationally safe when used for the
intended purpose. The construction and design of the
unit conform to the state of the art, all relevant DIN/VDE
regulations and all relevant safety regulations.
Every person who performs work on the unit must ha-
ve read and understood the operating manual prior to
starting any work. This also applies if the respective per-
son has already worked with such a unit or a similar unit
or has been trained by the manufacturer.
Every person who performs work on the unit must
comply with the applicable accident prevention and
safety regulations. This applies in particular to the
wearing of personal safety gear.
DANGER!
Danger of fatal injury due to electric shock!
Electrical connections may be installed only
by qualied electricians.
Before opening the unit, disconnect the sys-
tem from the power supply and secure it
from being switched back on!
DANGER!
Only qualied technicians (trained heating,
cooling, refrigerant and electrical techni-
cians) may perform work on the unit and its
components.
WARNING!
Observe safety labels on and in the unit.
WARNING!
Unit contains refrigerants!
Leaking refrigerant could result in
personal injury or material damage. There-
fore:
– Shut down unit.
– Notify the manufacturer’s authorised
service centre.
ATTENTION
For safety reasons:
Never disconnect the unit from the power sup-
ply, unless the unit is being opened.

583051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
ATTENTION
Install the heat pump only outdoors and ope-
rate only with outside air as the heat source. Do
not restrict or block the air-conducting sides.
Dimensional drawing and installation plan for
respective model.
WARNING!
Never switch on unit if air ow baes on the
unit are removed.
ATTENTION
The integration of the heat pump in ventila-
tion systems is not permissible. The use of the
cooled air for cooling purposes is not permitted.
ATTENTION
The ambient air in the location where the he-
ating pump is installed and also the intake air
which is used as a source of heat must not con-
tain any kind of corrosive components!
Components such as ammonia, sulphur, chlo-
rine, salt, sewer gas, ue gases etc. may cause
damage leading to complete failure or even a
total write-o of the heating pump!
ATTENTION
By cooling with low ow temperatures, conden-
sate can be expected to form on the heat dis-
tribution system as the temperature falls be-
low the dew point. If the heat distribution sys-
tem is not designed for these operating condi-
tions, it must be protected by appropriate safety
devices, e.g. dew point monitor (purchasable ac-
cessory).
NOTICE
If the heating surfaces are used for heating and
cooling, the control valves must be suitable for
heating and cooling.
In addition, a dew-point monitor should be used
for cooling.
WARNING!
In the air outlet area the air temperature is
ca. 5 K below the ambient temperature. Un-
der certain climatic conditions, therefore,
an ice layer can form in the air outlet area.
Install the heat pump so that the air blower
does not blow in the direction of footpaths.
Customer Services
For technical information please contact a qualied
installer or the manufacturer’s local partner.
For a current list and additional partners of the
manufacturer, please visit www.novelan.com.
Warranty / Guarantee
For warranty and guarantee conditions, please refer to
the purchase documents.
NOTICE
Please contact your dealer concerning warran-
ties and guarantees.
Waste disposal
When decommissioning the unit, always comply with
applicable laws, directives and standards for the recove-
ry, recycling and disposal of materials and components
of cooling units.
“Dismantling”.

683051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Operating principle of heat
pumps
Heat pumps operate on the principle of a refrigerator:
the same technology, only with the opposite eect. The
refrigerator extracts heat from foods, which is released
into the room through ns on the back.
The heat pump extracts heat from our environment: air,
earth or water. The extracted heat is conditioned in the
unit and supplied to the heating water. Even when it is
extremely cold outside, the heat pump draws enough
heat to heat a house.
Example: drawing of a brine/water heat pump with oor
heating:
4/4= usable energy
approx. 3/4= environmental energy
approx. 1/4= external
electrical energy
Area of utilisation
Taking into consideration the ambient conditions, limits
of application and the applicable regulations, every he-
at pump can be utilised in new or existing heating sys-
tems.
Overview “Technical data / scope of delivery”.
Heat quantity recording
In addition to verication of the unit‘s eciency,
EEWaermeG also meets the demand for a heat quantity
recording (hereafter referred to as HQR). The HQR is
mandatory with air/water heat pumps. With brine/
water and water/water heat pumps, an HQR may only
be set up when a forward ow temperature of ≥ 35 °C
has been reached. The HQR must record the total warm
energy release (heating and hot water) in the building.
In heat pumps with heat quantity recording, the analysis
is conducted by the regulator. The regulator displays
the thermal energy that is exchanged from the heating
system in kWh.
Operation
Your decision to purchase a heat pump or a heat pump
system is a long-term contribution to protecting the en-
vironment through low emissions and reduced primary
energy use.
You can operate and control the heat pump system wi-
th the control element of the heating and heat pump re-
gulator.
NOTICE
Make sure that the control settings are correct.
Operating manual of the heating and heat
pump regulator.
To ensure that your heat pump or heat pump system
operates eciently and ecologically, the following are
especially important:
€ENERGY SAVING TIP
Avoid unnecessarily high ow temperatures.
The lower the ow temperature on the hot wa-
ter side, the more ecient the system.
€ENERGY SAVING TIP
Do not leave windows open continuous-
ly; ventilate by opening windows wide for a
short time as this saves energy and reduces
your heating costs.

783051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Care of the unit
The outer surfacesof theunit can be cleaned with a
damp cloth and household cleaning products.
Do not use cleaning or care products that contain
abrasives, acids and/or chlorine. Such products would
destroy the surfaces and could also damage the
technical components of the unit.
Maintenance of the unit
The cooling circuit of the heat pump requires no regu-
lar maintenance.
According to EU regulation (EC) 517/2014, leak
inspections and maintenance of a log book are required
by law for certain heat pumps!
Log book for heat pumps, Section “Information
on use of the log book”.
The components of the heating circuit and the heat
source (valves, expansion vessels, circulating pumps, l-
ters, dirt traps) should be inspected as well as cleaned as
needed – at the very least annually – by a qualied hea-
ting or cooling system technician.
The intake and blow-out openings must be inspected
for dirt at regular intervals (depending on the installati-
on location) and cleaned, if necessary.
ATTENTION
Regularly check to ensure that the condensate
can drain out of the unit unobstructed. To this
end, check the condensate pan in the unit as
well as the condensate drain on a regular basis
to ensure that they are clean / free from obstruc-
tions; clean as needed.
Icing of the protective grating
When temperatures fall below freezing and high levels
of humidity are present, ice can form on the protective
grating of the air ow baes. In order to ensure
problem-free operations, the ice must be removed on a
regular basis.
It is a good idea to have a maintenance contract with
a heating installation company. The company will con-
duct the required maintenance at regular intervals.
CLEANING AND FLUSHING UNIT COMPONENTS
WARNING!
Unit components may be cleaned and us-
hed only by customer service personnel
authorised by the manufacturer. Use only li-
quids recommended by the manufacturer.
Flushing of the condenser with chemical
cleaning agents must be followed by
neutralisation of residue and intensive
ushing with water. Always observe the
technical data of the manufacturer of the
heat exchanger.
Malfunctions
In the event of a malfunction, you can detect the cause
of the malfunction via the diagnostic program of the he-
ating and heat pump regulator.
Operating manual of the heating and heat
pump regulator.
DANGER!
Service and repair work on the components
of the unit may be performed only by custo-
mer service personnel authorised by the ma-
nufacturer.

883051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Scope of delivery
TWO PACKING UNITS:
Packing unit 1:
Air ow baes (quantity of 2,
each in a separate box)
Packing unit 2:
Compact 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).
Inspect delivery for outwardly visible signs of
damage.
Check to make sure that delivery is complete...
Any defects or incorrect deliveries must be claimed
immediately.
NOTICE.
Note the model.
Overview “Technical data/ scope of delivery”.
ACCESSORIES NECESSARY FOR OPERATION
ATTENTION
Use only original accessories from the manufac-
turer of the unit.
The heating and heat pump regulators – functioning as
wall regulators, comfort boards as well as control and
sensor wires – are necessary for operation of the unit
and must be ordered separately.
The heat pump is a functioning unit only with the
heating and heat pump regulator and the control and
sensor wires.
Heating and heat pump regulator
(for wall mounting)
Control and sensor wires are available in various lengths,
as required.
ADDITIONAL ACCESSORIES
The installation accessories (vibration decouplers)
for air/water indoor installation heat pumps must be
ordered separately.
Dew point monitors must be ordered separately.
With the LW... A/RX you must select the electrical
heating element for the specic system and order it
separately.

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83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Installation and assembly
Observe the following when performing all work:
NOTICE
Always comply with applicable accident pre-
vention regulations, statutory regulations, ordi-
nances and directives.
DANGER!
The heat pump or heat pump system may be
installed and assembled only by a qualied
technician!
NOTICE
Observe the sound levels of the respective mo-
del.
Overview “Technical data / scope of delivery”,
“Sound” section and “Sound level” overview.
INSTALLATION LOCATION
ATTENTION
Install the unit only outdoors.
Dimensional drawing and installation plan for
respective model.
TRANSPORT TO INSTALLATION LOCATION
To prevent damage during transport, always transport
the unit to nal installation location in its original packa-
ging, using a lifting truck, forklift or crane.
DANGER!
Several people are required to transport the
unit. Do not underestimate the weight of the
unit.
Overview “Technical data/ scope of delivery”.
DANGER!
The unit can tip when being removed from
the wooden pallet and during transport! This
can result in personal injury and damage to
the unit.
– Take suitable precautionary measures to
eliminate the danger of tipping.
DANGER!
Make sure to secure unit against slipping du-
ring transport.
ATTENTION
Never use components and hydraulic connec-
tions on the unit for purposes of transport.
ATTENTION
Do not tilt the unit more than a maximum of 45°
(in any direction).

10 83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
SOUND
The noise emission from the heat pumps must be taken
into account in the respective installation plans for air /
water heat pumps. The respective regional regulations
must be complied with.
NOTE.
The following sound pressure levels are calcu-
lated values. Other constellations, adjoining
other buildings or even reecting surfaces may
lead to a level increase. An exact specication
of each sound pressure level is possible only
through a measurement spot when the heat
pump is already installed.
The following sound pressure levels result, depending on the distance and installation variant with directivity factor Q
(see sketches Seite 11):
LA
9RX
Distance from the heat pump in m
12345678910 11 12 13 14 15 16 17 18 19 20
Directivity
factor Sound pressure level at max. heating output in dB(A)
Q
258 52 48,5 46 44 42,4 41,1 39,9 38,9 38 37,2 36,4 35,7 35,1 34,5 33,9 33,4 32,9 32,4 32
461 55 51,5 49 47 45,4 44,1 42,9 41,9 41 40,2 39,4 38,7 38,1 37,5 36,9 36,4 35,9 35,4 35
864 58 54,5 52 50 48,4 47,1 45,9 44,9 44 43,2 42,4 41,7 41,1 40,5 39,9 39,4 38,9 38,4 38
LA
14RX
Distance from the heat pump in m
12345678910 11 12 13 14 15 16 17 18 19 20
Directivity
factor Sound pressure level at max. heating output in dB(A)
Q
259 53 49,5 47 45 43,4 42,1 40,9 39,9 39 38,2 37,4 36,7 36,1 35,5 34,9 34,4 33,9 33,4 33
462 56 52,5 50 48 46,4 45,1 43,9 42,9 42 41,2 40,4 39,7 39,1 38,5 37,9 37,4 36,9 36,4 36
865 59 55,5 53 51 49,4 48,1 46,9 45,9 45 44,2 43,4 42,7 42,1 41,5 40,9 40,4 39,9 39,4 39

11
83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
The directivity factor Q for the dierent installation va-
riants:
Q = 2
Q = 4
Q = 8
In case of 2 or more units of the same heat pump type, the
respective level increase must be added to the correspon-
ding sound pressure level from the following table
Number of n equally
loud sound sources
Level increase
∆ L in dB
10,0
23,0
34,8
46,0
57,0
67,8
78,5
89,0
99,5
10 10,0
12 10,8
In case of dierent, not equally loud units, the level in-
crease is read o the following diagram:
Level increase in dB
Level dierence in dB
Example: If the level dierence between two unequal
sound sources is 5 dB, the level increase is an additio-
nal 1.2 dB.
INSTALLATION
Place the unit on a solid, level foundation that is capable
of bearing weight. Make sure that the foundation is de-
signed for the weight of the heat pump. Materials that
meet this requirement can be used for the foundation
(concrete, stone slabs, etc.). The ground surface in the
air outlet area of the heat pump must be permeable to
water.
ATTENTION
In the air outlet area the air temperature is ca.
5 K below the ambient temperature. Under cer-
tain climatic conditions, therefore, an ice layer
can form in the air outlet area.
Install the heat pump so that the air blower does
not blow in the direction of footpaths.
DANGER!
Several people are required to install the
unit.
NOTICE
Always comply with the installation plan for the
respective model. Adhere to the size and mini-
mum clearances.
Installation plan for respective model.
NOTICE
Set up the unit so that the switch cabinet side (=
operating side) is accessible at all times.

12 83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
PREPARING FOR INSTALLATION
Remove lower facing panels on the switch cabi-
net side (= operator side) and the water connection
side of the unit:
1 Quick-release screws
2 Lower facing panel
Loosen quick-release screws. Turn counter-clock-
wise 90°...
On both sides, pull lower facing panel upward and
outward, detach and set securely aside.
LIFTING THE UNIT WITH PIPES
ONLY LW 90A/RX…
The units can be lifted with ¾” pipes (provided by
customer) that are suitable for the weight of the
respective unit. Special holes are provided in the frame
for this purpose.
Insert the pipes through the holes in the frame on
the switch cabinet side (= operator side) ...
Make sure that pipes do not damage cable
assemblies and components in the unit.
Guide pipes carefully past cable assemblies and
components in the unit...
Insert the pipes through the holes in the frame on
the water connection side...

13
83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Lift unit by the pipes, with at least four persons, and
place on the base. Make sure that the frame of the
unit is in full contact with the underlying surface...
LIFTING THE UNIT WITH A CRANE
NOTICE.
Models LI 14RX and higher must be lifted using
a crane.
Remove side laths on the wooden pallet...
Guide lifting straps under the unit. Insert laths or be-
ams between the lifting straps and the unit in or-
der to prevent damage to the housing, or remove
facing panels...
See removal instructions under “Attaching air
ow baes”.
A Front view (operator side)
B Side view 1
DANGER!
Lifting straps should not be too close toge-
ther or too near the centre; otherwise the
unit may tip!
C Side view 2
ATTENTION
Guide lifting straps past the fan on the side.
Make sure the straps do not press against
the ventilator during transport.
Lift unit with the crane and place on the base. Make
sure that the frame of the unit is in full contact with
base.
ATTACHING THE AIR FLOW BAFFLES
WARNING!
Unit has rotating parts.
For safety reasons, mount the two air ow
baes on the unit before continuing with
any other work.

14 83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
The top cover of the unit was fastened by the upper
facing panels. After removal of the upper facing pa-
nels, the top cover is loose. Remove top cover and
set securely aside...
Install air ow baes...
•
Suspend air ow baes in the brass bushes on the
top side of the frame...
1 eyelet on air ow bae
2 brass bushing on frame
If you have not already done so, remove lower
facing panels on the switch cabinet and water con-
nection side of the unit...
•
To do so, loosen the two quick-release screws on
the lower facing panels...
•
Pull each facing panel forward, detach from the
unit and set securely aside...
1 lower facing panels
Remove upper facing panels from unit...
•
To do so, loosen the two screws on the lower edges
of the upper facing panels...
•
Pull each facing panel downward and forward, de-
tach from top cover of unit and set securely aside...
1 top cover of unit
2 upper facing panels

15
83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
•
Bolt air ow baes to the frame on the switch ca-
binet side (= operator side) and water connection
side…
Return top cover to frame...
Suspend upper facing panels in the top cover. Bolt
to the frame at bottom...
The air ow baes are now installed. You can now
carry out mounting and installation work on the
unit, and afterwards attach the lower facing panels.
(see “Electrical connection work”, “Heat pump
side connection of control and sensor wires”)
.
ATTENTION
During extended interruptions in work, clo-
se the unit with the lower facing panels.
INSTALLATION / CONNECTION TO HEATING
CIRCUIT
ATTENTION
Connect the unit to the heating circuit accor-
ding to the hydraulic diagram for the respective
model.
“Hydraulic connection” instructions.
NOTICE
Check to make sure that the diameters and
lengths of the pipes for the heating circuit (in-
cluding the earth lead between the heat pump
and the building!) are suciently dimensioned.
NOTICE
Circulating pumps must be multi-stage, regula-
ted pumps. They must be able to deliver at least
the minimum hot water ow rate required for
your model.
Overview “Technical data / scope of delivery”,
“heating circuit” section.

16 83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
ATTENTION
The hydraulic system must be equipped with
a buer tank, the required volume of which
depends on the model of your unit.
Overview “Technical data / scope of delivery”,
“heating circuit, buer tank” section.
ATTENTION
When installing the connections, always secure
the connections on the unit against twisting, in
order to prevent damage to the copper pipes in
the interior of the unit.
Flush heating circuit thoroughly prior to connec-
ting the unit to the heating circuit...
NOTICE
Contamination and deposits in the heating cir-
cuit can cause malfunctions.
Install shut-o devices for the hot water outow
(forward ow) and hot water inow (return ow) on
the heat pump side.
NOTICE
During installation of the shut-o devices, the
evaporator and condenser of the heat pump can
be ushed, if necessary.
WARNING!
The condenser may be ushed only by
customer service personnel authorised by
the manufacturer .
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.
NOTICE
Vibration decouplers are available as accesso-
ries.
LW 90A/RX…:
1 Hot water inow (return ow) connection
2 Hot water outow (forward ow) connection
3 Condensate water hose
LW 140A/RX:
1 Hot water inow (return ow) connection
2 Hot water outow (forward ow) connection
3 Condensate water hose
Install the condensate water hose in the unit so that
there is no contact with refrigerant pipes.
Make sure that frost-free condensate discharge is
ensured.
Installation plan for respective model.
Heat pump planning manual.
Seal empty pipes on unit side.

17
83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Circulating pumps
ATTENTION
Always note the model.
Do not use unregulated circulating pumps.
Circulating pumps and domestic hot water cir-
culation pumps must be multi-stage, regulated
pumps.
Water heating
Water heating with the heat pump requires an additio-
nal hot water circuit, parallel to the heating circuit. Ma-
ke sure that the heating water charge is not channelled
through the buer tank of the heating circuit.
“Hydraulic connection” instructions.
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. The storage volume must be sucient so that
the required hot water quantity is available even duri-
ng a power cut.
NOTICE
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.
We oer a variety of hot-water tanks for you to choose
from. They are optimised for use with your heat pump.
NOTICE
Integrate the hot-water tank in the heat pump
system according to the hydraulic diagram for
your system.
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
water, it is sucient to insert the condensate pipe ver-
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.
Pressure relief
Equip the heating circuit in accordance with local
standards and directives with a safety valve and an
expansion tank.
Also install lling and emptying devices, shut-o de-
vices and non-return valves in the heating circuit.
Separating buer tank
The hydraulic integration of the heat pump is only
permissible with a separating buer tank (Isolation
against vapour diusion).
The ow direction of the hot water system must also be
rotated via the switching valve during cooling.
hydraulic diagram see Seite 33
Vseparating buer tank =
minimum ow rate of heat circuit
volume ow / hour
10
For the minimum ow rate of the heat
circuit volume ow, see overview “Technical
data / Scope of delivery”, “Heating circuit”
section.

18 83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
LW 140A/RX:
1 Connection box for compressor
Connect power cable to the connection box (elec-
tric heating element on-site)...
Close connection box...
Install power cable in a conduit as far as where it
enters the building and from there on to the fuse
box...
Connect power cable to power supply.
ATTENTION
Ensure clockwise rotary eld of the load power
supply (compressor).
– An incorrect rotary eld of the compressor du-
ring operation can cause serious, irreparable da-
mage to the compressor.
ATTENTION
Make sure to equip the power supply of the heat
pump with a 3-pole automatic cut-out with at
least 3mm contact gap.
Note the level of the release current.
Overview “Technical data / scope of delivery”,
“Electric” section.
Electrical connections
Observe the following when performing all work:
DANGER!
Danger of fatal injury due to electric shock!
Electrical connections may be installed only
by qualied electricians.
Before opening the unit, disconnect the sys-
tem from the power supply and secure it
from being switched back on!
DANGER!
Observe the relevant EN-, VDE and/or appli-
cable local safety regulations during the in-
stallation and during all electrical work.
Comply with technical connection require-
ments of the responsible power supply com-
pany (if required by the latter)!
POWER CONNECTION
It is not necessary to open the electric switch cabinet in
order to connect the power to the heat pump. The po-
wer is connected at the connection boxes on the water
connection side.
If the unit is closed, open facing panels...
“Preparing for installation”
Open connection boxes...
LW 90A/RX…:
1 Connection box for compressor

19
83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
HEAT PUMP SIDE CONNECTION OF THE CONTROL
AND SENSOR WIRES
The heat pump is connected to the heating and he-
at pump regulator by means of the control and sensor
wires. They are connected at the electric switch cabinet
on the switch cabinet side (= operator side) of the he-
at pump.
DANGER!
Danger of fatal injury due to electric shock!
Unit must be disconnected from the power
supply.
Screw control and sensor wires to the two connec-
tors on the side of the electric switch cabinet...
Guide control and sensor wires inside the unit
through the provided cable duct to the water con-
nection side...
1 Cable duct for control and
sensor wires (only L 140A/RX)
Guide control and sensor wires out of the unit...
NOTICE
In order to enable unhinging of the electric
switch cabinet in the event that customer ser-
vice is necessary, the control and sensor wires
in the heat pump must have an excess length of
about 15 cm.
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...
Connect control and sensor wires to the heating
and heat pump regulator according to the terminal
diagram and the circuit diagrams for the respective
model...
”Terminal diagrams” and “Circuit diagrams” for
the respective model.
Operating manual of the heating and heat
pump regulator.
Seal empty pipes on unit side...
Screw facing panels onto the heat pump...
Place lower facing panels diagonally into the frame,
close at top and fasten with quick-release screws...
The unit is now closed.

20 83051403cUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Flushing, lling and bleeding the
system
WATER QUALITY OF THE FILL AND ADDITIONAL
WATER IN HOT WATER HEATING SYSTEMS
ACCORDING TO VDI2035
PART I AND II
Use of modern, energy-ecient heat pump systems
is becoming increasingly widespread. Their ingenious
technology enables these systems to achieve very good
eciencies. The decreasing space available for heat
generators has led to the development of compact
units with increasingly smaller cross-sections and high
capacities. This means the complexity of the systems and
the material diversity are also increasing, which plays an
important role especially in their corrosion behaviour.
The heating water not only aects the eciency of the
system, but also the life of the heat generator and the
heating components of a system.
The guide values of VDI 2035 Part I and Part II must
therefore be complied with as minimum requirements
for proper operation of the systems. Our practical
experience has shown that the safest and most trouble-
free running of the systems is achieved with so-called
low-salt operation.
VDI 2035 Part I gives important information and
recommendations regarding scaling and its prevention
in heating and domestic hot water heating systems.
VDI 2035 Part II primarily deals with the requirements for
reducing heating water corrosion in hot water heating
systems.
PRINCIPLES OF PART I AND PART II
The occurrence of scaling and corrosion damage in hot
water heating systems is low, if
- proper planning and commissioning is carried out
- the system is closed in corrosion terms
- adequately dimensioned pressurising is integrated
- the guide values for the heating water are complied
with
- and regular servicing and maintenance are carried out.
A system log should be kept, in which the relevant plan-
ning data is entered (VDI 2035).
DAMAGE THAT CAN OCCUR IN CASE OF NON
COMPLIANCE
- Malfunctions and the failure of components (e.g.
pumps, valves)
- Internal and external leaks (e.g. from heat exchangers)
- Cross-section reduction and blockaging of componen-
ts (e.g. heat exchanger, pipes, pumps)
- Material fatigue
- Gas bubbles and gas cushion formation (cavitation)
- Negative eect on heat transfer (formation of coatings,
deposits) and associated noises (e.g. boiling noises, ow
noises)
LIMESCALE  THE ENERGY KILLER
Filling with untreated drinking water inevitably leads
to the precipitation of all calcium as scale. The conse-
quence: limescale deposits form on the heat transfer
surfaces of the heating. The eciency falls and the en-
ergy costs rise. A rule of thumb is that 1 millimetre of
limescale deposit causes an energy loss of 10%. In ex-
treme cases it can even cause damage to the heat ex-
changers.
WATER SOFTENING TO VDI 2035  PART I
If the water is softened before the heating is lled, in
accordance with the VDI 2035 guidelines, no scale can
form. This eectively and permanently prevents limes-
cale deposits and the resulting negative eects on the
entire heating system.
CORROSION  AN UNDERESTIMATED PROBLEM
VDI 2035, Part II, deals with the problem of corrosion.
Softening the heating water can prove to be insuci-
ent. The pH value can signicantly exceed the limit of
10. pH values higher than 11 can set in, which even da-
mage rubber seals. The VDI 2035, Part 1 guidelines are
fullled, however, VDI 2035, Part 2 suggests a pH value
between 8.2 and maximum 10.
If aluminium materials are used, which is the case in ma-
ny modern heating systems, a pH value of 8.5 must not
be exceeded, because otherwise there is a threat of cor-
rosion – and aluminium is attacked without the pre-
sence of oxygen. Therefore, apart from softening the he-
ating ll and additional water, the heating water should
also be appropriately conditioned. This is the only way
to comply with the VDI 2035 requirements and the re-