Novelan LI 10.1 User manual

Operating Manual
UK
83054303eUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Air/Water Heat Pumps
Indoor Installation
LI 10.1 – LI 12.1

283054303eUK – 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 information
on 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 opera-
ting the unit. This applies in particular to the chapter on
safety. Always follow all instructions completely and wi-
thout restrictions.
It is possible that this operating manual may contain
instructions that seem incomprehensible or unclear.
In case of questions or uncertainty, contact the factory
customer 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 a immediate danger of serious in-
juries or death.
WARNING!
Indicates a potentially dangerous situation
that could result in serious injuries or death.
CAUTION!
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.

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Contents
INFORMATION FOR USERS AND QUALIFIED
PERSONNEL
PLEASE READ FIRST....................................................................2
SYMBOLS......................................................................................2
INTENDED USE ............................................................................4
EXCLUSION OF LIABILITY..........................................................4
EC CONFORMITY.........................................................................4
SAFETY..........................................................................................4
CUSTOMER SERVICE...................................................................5
WARRANTY / GUARANTEE.......................................................5
DISPOSAL .....................................................................................5
FUNCTIONING PRINCIPLE OF HEAT PUMP SYSTEM............6
AREA OF UTILISATION...............................................................6
HEAT QUANTITY RECORDING ..................................................6
OPERATION..................................................................................6
CARE OF THE UNIT .....................................................................7
MAINTENANCE OF THE UNIT....................................................7
Cleaning and flushing of unit components .....................7
MALFUNCTIONS .........................................................................7
INSTRUCTIONS FOR QUALIFIED PERSONNEL
SCOPE OF DELIVERY...................................................................8
INSTALLATION AND ASSEMBLY ...............................................8
Sound......................................................................................9
Installation location ...........................................................10
Transport to installation location ....................................10
Installation ........................................................................... 11
Mounting the air ducts...................................................... 12
Installation / connection to heating circuit ..................15
Condensate discharge .......................................................16
PRESSURE RELIEF......................................................................16
OVERFLOW VALVE ....................................................................16
BUFFER TANK.............................................................................16
CIRCULATING PUMPS ..............................................................17
WATER HEATING ....................................................................... 17
HOTWATER TANK.....................................................................17
ELECTRICAL CONNECTIONS................................................... 17
FLUSHING, FILLING AND BLEEDING THE SYSTEM..............18
Water quality of the fill and additional water in hot
water heating systems.................................................18
INSULATING THE HYDRAULIC CONNECTIONS ...................20
INSTALLATION OF THE CONTROL ELEMENT .......................20
INSTALLATION AND REMOVAL OF THE SCREEN.................22
SET THE OVERFLOW VALVE.....................................................23
COMMISSIONING......................................................................23
Safety temperature limiter................................................24
DISMANTLING ...........................................................................24
TECHNICAL DATA / SCOPE OF DELIVERY
LI 10.1 – LI 12.1.....................................................................26
PERFORMANCE CURVES
Heating capacity/COP / power consumption /
Heat pump pressure loss
LI 10.1....................................................................................28
LI 12.1 ....................................................................................29
DIMENSIONAL DRAWINGS AND INSTALLATION PLANS
LI 10.1
Dimensional drawings .......................................................30
Installation plan Version 1.................................................31
Installation plan Version 2.................................................32
Installation plan Version 3.................................................33
Installation plan Version 4.................................................34
LI 12.1
Dimensional drawings .......................................................35
Installation plan Version 1.................................................36
Installation plan Version 2.................................................37
Installation plan Version 3.................................................38
Installation plan Version 4.................................................39
HYDRAULIC INTEGRATION
LI 10.1 – LI 12.1
Row tank.............................................................................. 40
Separate buffer tank ..........................................................41
Legend Hydraulic integration...........................................42
TERMINAL DIAGRAMS
LI 10.1 – LI 12.1.....................................................................43
CIRCUIT DIAGRAMS
LI 10.1 – LI 12.1.................................................................... 44
EC DECLARATION OF CONFORMITY.....................................47

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Intended use
The unit may be used only for the intended purpose.
This means:
•for heating.
•for heating hot water.
The unit may be operated only within its technical
parameters.
Overview „Technical data / scope of delivery“.
NOTICE.
Notify the responsible power supply company
of the use of a heat pump or heat pump system.
ATTENTION
The unit is not suitable for use in IT network sys-
tems.
Exclusion of liability
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
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 com-
ply 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!
CAUTION!
If using the unit in 3~230V systems, please
note that the residual-current circuit breaker
(RCCB) used must be AC-DC sensitive.
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 can result in personal
injury or material damage. Therefore:
– Shut down unit.
– Notify the manufacturer’s authorised
service center.

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ATTENTION
For safety reasons:
Never disconnect the unit from the power sup-
ply, unless the unit is being opened.
ATTENTION
Install the heat pump only indoors and operate
only with outside air as the heat source. The air
ducts must discharge into the open air. Do not
restrict or block the air ducts.
Dimensional drawing and installation plan for
respective model.
WARNING!
Switch on unit only if air ducts are mounted
on the unit.
Take measures on the fan side to prevent in-
juries from the rotating fan (above-ground
air duct discharge: weather grille, below-
ground air-channel discharge: rain guard –
accessories not included in scope of delive-
ry).
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!
CAUTION!
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 service
For technical assistance, please contact your qualied
technician or the manufacturer‘s local service partner.
For a current list and additional partners of the manuf-
acturer, please visit
DE: www.novelan.de
EU: 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.
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 colling units.
Dismantling.

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Functioning principle of heat
pump system
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 ground water. The extracted heat is con-
ditioned 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
ca. 3⁄4= environmental energy
ca. 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 utilized in new or existing heating sys-
tems.
Overview „Technical data / scope of delivery“.
Heat quantity recording
In addition to proof of the unit‘s eciency, heating
legislation also requires heat quantity recording
(referred to as WME in this manual). The WME is
mandatory with air/water heat pumps. With brine/
water and water/water heat pumps, a WME is only
required when the feed temperature is ≥ 35 °C. The WME
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
environment through low emissions and reduced
primary energy use.
You can operate and control the heat pump system
with the control element of the heating and heat pump
regulator.
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.
A lower ow temperature on the hot water side
increases the eciency of the system.
€ENERGY SAVING TIP
When letting in fresh air, do not leave windows
open for an extended period, thus saving en-
ergy and reducing your heating costs.

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Care of the unit
The outer surfaces of the unit 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.
It is a good idea to have a maintenance contract with
a specialist company. The company will conduct the
required maintenance at regular intervals.
ATTENTION
Check regularly to ensure that the condensate
can drain out of the unit unobstructed. To this
end, regularly check the condensate pan in the
unit and the condensate drain to ensure that
they are clean / free from obstructions and clean
as needed.
CLEANING AND FLUSHING OF UNIT COMPONENTS
CAUTION!
Unit components may be cleaned and
ushed only by customer service personnel
authorised by the manufacturer. Use only
liquids recommended by the manufacturer.
Flushing of the liqueer with chemical
cleaning agents must be followed by
neutralisation of residue and intensive
rinsing 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.
Note that no malfunction is displayed if the safety tem-
perature limiter on the electric heating element has be-
en triggered (depending on model).
“Commissioning”, “Safety temperature limiter”
section.

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Scope of delivery
Example of scope of delivery:
View 1:
View 2:
Unit with a completely hermetically
enclosed compressor, all safety-
related components for monitoring
of the cooling circuit, integrated
heating and heat pump regulator,
sensors mounted in the unit for
the monitoring of hot gas, heating
water forward ow and return
ow temperatures, as well as a
hose for condensate discharge
(connected to heat pump side)
Inspect delivery for outwardly visible signs of
damage.
Check to make sure that delivery is complete.
Any defects or incorrect delive-
ries must be claimed immediately.
ACCESSORIES NECESSARY FOR OPERATION
ATTENTION
Use only original accessories from the manufac-
turer of the unit.
Air ducts (with air duct accessories) must be ordered se-
parately.
ADDITIONAL ACCESSORIES
The installation accessories (vibration decouplers)
for air/water indoor installation heat pumps must be
ordered separately.
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.
WARNING!
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
model.
Overview “Technical data / scope of delivery”,
“Sound” section.

9
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NOTE.
The following sound pressure levels are calcula-
ted 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 al-
ready installed.
The following sound pressure levels result, depending on the distance and installation variant with directivity factor Q
(see sketches):
LI
10.1
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
2- - - - - - - - - - - - - - - - - - - -
450 44 40,5 38 36 34,4 33,1 31,9 30,9 30 29,2 28,4 27,7 27,1 26,5 25,9 25,4 24,9 24,4 24
853 47 43,5 41 39 37,4 36,1 34,9 33,9 33 32,2 31,4 30,7 30,1 29,5 28,9 28,4 27,9 27,4 27
LI
12.1
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
2- - - - - - - - - - - - - - - - - - - -
450 44 40,5 38 36 34,4 33,1 31,9 30,9 30 29,2 28,4 27,7 27,1 26,5 25,9 25,4 24,9 24,4 24
853 47 43,5 41 39 37,4 36,1 34,9 33,9 33 32,2 31,4 30,7 30,1 29,5 28,9 28,4 27,9 27,4 27
The directivity factor Q for the dierent installation va-
riants:
Q = 4
Q = 8
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 cor-
responding sound pressure level from the following ta-
ble
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
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.

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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 LOCATION
ATTENTION
Install the unit only indoors.
The installation area must be frost-free and dry. It must
meet the requirements of DIN EN 378. It must also fulll
applicable local regulations.
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.
If it is not possible to transport the unit to the nal in-
stallation location using a lifting truck, you can also
transport the heat pump using a hand truck or with pi-
pes.
DANGER!
Several people are required to transport the
unit. Do not underestimate the weight of the
unit.
Overview “Technical data / scope of delivery”,
“General unit data” section.
DANGER!
Unit is not fastened to the wooden pallet.
Danger of tipping over during transport!
This can result in personal injury and dama-
ge 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 damage the hydraulic connections un-
der any circumstances.
ATTENTION
Do not tilt the unit more than a maximum of 45°
(in any direction).
LIFTING THE UNIT WITH PIPES
The units can be lifted with 3/4“ and/or 1“ pipes
(provided by customer) that are suitable for the weight
of the respective unit. Special holes are provided in the
frame for this purpose.
Remove lower facing panels on the switch cabinet
side (= operator side) of the unit. To do so, loosen
quick-release screws. Turn counter-clockwise 90°…
1 Quick-release screws
2 Lower facing panel

11
83054303eUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Lift the unit on the pipes with at least four people
and carry it to its nal installation location…
Put the unit in its nal installation location. Make
sure that the frame of the unit is in full contact with
the underlying surface…
Remove the pipes and re-place the sealing grom-
mets on the back side of the unit…
If the electrical connections will not be carried out
directly thereafter, mount the lower facing panel
on the operating side.
INSTALLATION
Set the unit on a stable, solid and level, preferably
sound-insulated surface. Make sure that the foundation
is designed for the weight of the heat pump.
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.
CAUTION.
Do not tilt the unit more than a maximum of 45°
(in any direction).
NOTICE.
Always observe the installation plan for the re-
spective model. Note the size and minimum
clearances.
Installation plan for respective model.
Set up the unit so that the switch cabinet side (= opera-
ting side) is accessible at all times.
Pull lower facing panel upwards and outwards,
detach and set securely to the side…
On the back of the unit, remove the sealing
grommet…
Insert the pipes through the holes in the frame on
the switch cabinet side (= operator side)…
1 Holes in the frame
2 Inserted pipes
Make sure that pipes do not damage cable assem-
blies and components in the unit. Guide pipes care-
fully past cable assemblies and components in the
unit…
Guide pipes through the marked openings on the
back side of the unit…

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MOUNTING THE AIR DUCTS
ATTENTION
Use only original accessories or air ducts recom-
mended by the manufacturer (breglass light-
weight concrete ducts).
Mount air ducts only according to the installa-
tion plan for the respective unit.
Installation plan for respective model.
WALL DUCTS ASSEMBLY
Remove the parts necessary for the assembly of the
wall duct(s) from their respective boxes…
Next, interlock the 2 pieces of the wall duct(s) that
belong together, as illustrated in the following
drawing. Use the lubricant supplied upon delivery
to help in this process…
Ax an additional part as illustrated…
Rotate the already-interlocked parts 90° and ax
the nal piece at the bottom…
Rotate the already-interlocked parts by 90° once
again and set up the nal connection…
Stabilise the wall duct from the inside using the
chipboard included with delivery…

13
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Install the wall duct in the masonry from the
house exterior. This can either be done during
the construction phase (by means of sealing)…
NOTICE.
Mount the wall ducts 1 cm above the nished
outer facade.
1 Masonry of the house exterior
2 Insert the wall duct in the
masonry (1 cm above the
nished outer facade)
or retrot (using foam in the masonry):
1 Finished outer facade
NOTICE.
Wall ducts x wall openings, help avoid cold air
transmission in the masonry as well as assist in
the assembly of weather / rain guards and wire
mesh grilles
AIR DUCTS ASSEMBLY
Remove the parts necessary for the assembly of the
air duct(s) from their respective boxes…
The interlocking of the air ducts is carried out
as described in the section – entitled „Wall
duct(s) assembly“.
SECURING THE AIR DUCT INTO THE WALL DUCT
Pull the roll seal included with delivery over the end
of the air duct…
Push this end of the air duct into the wall duct.
1 Wall duct
2 Air duct
3 Roll seal
4 Bentonite waterproong tape
(apply only after assembling the
unit‘s connection fastener)
NOTICE.
After the other end of the air duct has been se-
cured to the heat pump, close the opening bet-
ween the wall duct and the air duct using the
bentonite waterstop tape included with deli-
very.

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SCREEN FRAME ASSEMBLY
Screw the screen frame to the wall ducts on both the air
intake and output sides.
NOTICE.
The screen frame has no function, it is included
solely to provide an optically attractive transi-
tion to the wall duct.
WIRE MESH GRILLE AND WEATHER / RAIN GUARDS
ASSEMBLY
Remove the wire mesh grille and the weather / rain
guards as well as the assembly frame and fastening
material from their respective boxes…
From the outside of the house inwards, insert the
assembly frame into the wall duct on the air intake
side and secure with screws…
8 x
SECURING THE AIR DUCT ON THE HEAT PUMP
Clip on the assembly rail and secure it using special
screws to the spots on the air duct designated as
the air intake side…
Stick the adapter base included with delivery on
the edge of the air duct…
Position the air duct on the respective opening of
the air intake side…
Hook the tension springs included with delivery
into the holes provided for them on the air intake
side of heat pump 4…
Hook the tension springs into the assembly tail that
has been screwed on to the air duct…
Secure a protective cap over the assembly rail…
Repeat – the process on the air output side.
NOTICE.
Don‘t forget:
After the air ducts have been secured to the
heat pump, close the opening between the wall
duct and the air duct using the bentonite water-
stop tape included with delivery.
NOTICE.
Secure the air ducts to the cover using appropri-
ate measures.

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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 are
suciently dimensioned.
NOTICE.
Circulating pumps must be multi-stage. 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.
ATTENTION
The hydraulic system must be equipped with a
buer tank, the required volume of which de-
pends 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 from twisting, in or-
der to prevent damage to the copper pipes in
the interior of the unit.
Rinse 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.
Position the wire mesh grille in the assembly fra-
me…
Set the weather / rain guards on the assembly fra-
me in the wall duct and screw down…
8 x
NOTICE.
If the wall duct is positioned above ground le-
vel, attach the weather guard.
If the wall duct is positioned in a light well (be-
low ground level), attach the rain guard.
Repeat – the process on the air output side.

16 83054303eUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
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 li-
queer of the heat pump can be ushed, if ne-
cessary.
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 pi-
pes.
NOTICE.
Vibration decouplers are available as accesso-
ries.
The connections for the heating water outow (forward
ow) and the hot water inow *(return ow) are marked
accordingly.
For positioining of the connections, reference
the dimensional drawing for the respective mo-
del.
CONDENSATE DISCHARGE
The condensation water that accumulated from the air
must be drained via the pre-mounted hose in the unit
for condensate discharge. To do so, connect the hose for
condendate discharge with a water drain.
For positioning of the connection for conden-
sate discharge, see dimensional drawings for
the respective model.
1 Hose for condensate discharge
in interior of unit
2 Connection for the condensate
discharge on the outside of the unit
ATTENTION
Guide the pre-mounted hose in the unit for con-
densate discharge in the interior of the unit as a
siphon, as shown in the illustration.
Discharge of the condensate into the sewage system is
permitted only via a funnel siphon, which must be ac-
cessible at all times.
Pressure relief
Equip the heating circuit in accordance with local stan-
dards and directives with a safety valve and an expansi-
on tank.
Also install lling and emptying devices, shut-o de-
vices and non-return valves in the heating circuit.
Overow valve
Use an overow valve for tanks integrated in series to
ensure the minimum ow rate of the heating circuit vo-
lume ow through the heat pump. The overow val-
ve must be dimensioned so that the minimum ow ra-
te of the volume ow through the heat pump is ensured
when the heating circuit is shut o.
“Set the overow valve”, page 23
Buer tank
The hydraulic connection of the heat pump requires a
buer tank in the heating circuit. It ensures a minimum
operating time of the heat pump when the heating cir-
cuit valves are closed. The required volume of the buer
tank is calculated based on the following formula:
VBuffer tank =
minimum ow rate of heat circuit volume ow / hour
10
For the minimum ow rate of the heat circuit vo-
lume ow, see overview “Technical data / Scope
of delivery”, “Heating circuit” section.
In mono-energetic air/water systems, integrate the
buer tank in the heating water outow (forward ow)
before the overow valve.

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83054303eUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
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
applicable local safety regulations during
installation and during all electrical work.
Comply with any technical connection requi-
rements laid down by the responsible power
supply company!
NOTICE.
All live wires must be stripped before they are
installed in the cable duct of the switch cabi-
nets!
POWER CONNECTION
If the unit is closed, open the facing panels on the
operating side…
„Installation“.
Open electrical switch cabinet of unit…
Example of open
electrical switch cabinet…
Circulating pumps
ATTENTION
Always note the model.
Do not use regulated circulating pumps.
Circulating pumps and domestic hot water cir-
culation pumps must be multi-stage pumps.
Water heating
Water heating with the heat pump requires an additional
hot water circuit, parallel to the heating circuit. Make
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 is to 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.
“Hydraulic connection” instructions.

18 83054303eUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
NOTICE.
Using a suitable network cable, the control ele-
ment of the heat and heat pump regulator can
be connected with a computer or a network al-
lowing the heating and heat pump regulator to
be controlled from there.
If such a connection is desired, lay a category
6 screened network cable with RJ-45 plug
through the unit parallel to the heating and
heat pump regulator control cable already pre-
sent when making the connections, and lead it
through the front panel of the unit.
Close electrical switch cabinet of unit….
Attach the lower facing panels.
Flushing, lling and bleeding the
system
ATTENTION
The system must be absolutely free from air be-
fore commissioning.
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. Novelan ensures continuous technological
advances, but all these technical renements require
the system to be operated with correctly lled heating
water. 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.
Lead 230 V power cable, power cable for circulating
pumps and cable for external temperature sensor
through the rubber sockets on the facing panel in
the unit…
•
Cut out the rubber sockets on the facing panel…
For positioning of the rubber sockets for inser-
ting the wires, see „dimensional drawing“ for
the respective model.
•
Insert the cables through the rubber sockets in the
unit…
The wires inside the unit are guided in a closed wire
duct to the terminals on the switch plate.
Install electric connections according to the termi-
nal diagram that applies to your model…
Terminal diagram for respective model.
ATTENTION
Ensure clockwise rotary eld of the load power
supply (compressor).
– An incorrect rotary eld of the compressor
during operation can cause serious, irrepa-
rable damage 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 3 mm contact gap.
Note the level of the release current.
Overview “Technical data / scope of delivery”,
“Electric” section.
ATTENTION
If using the unit in 3~230V systems, please note
that the residual-current circuit breaker (RCCB)
used must be AC-DC sensitive.
ATTENTION
Factory setting for the electric heating element
in units with integrated electic heating elements
is 6 kW (9 kW). It can be changed at contactor Q5
(Q6) for 2 (3) or 4 kW (6kW).
For further information, see the adhesive label
on the electric heating element.

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83054303eUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
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
limescale 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cient.
The pH value can signicantly exceed the limit of 10. pH
values higher than 11 can set in, which even damage
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
many modern heating systems, a pH value of 8.5 must
not be exceeded, because otherwise there is a threat
of corrosion – and aluminium is attacked without the
presence of oxygen. Therefore, apart from softening
the heating 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 recommendations and installation instructions of
the heat pump manufacturer.
Part 2 of VDI 2035 also points out the reduction in total
salt content (conductivity). The risk of corrosion is far
lower if deionised water is used than is the case if the
system is operated with salty, i.e. softened water.
Even if the water has been softened beforehand, it
contains dissolved, corrosion-promoting salts, which act
as electrolytes due to the use of dierent materials in
the heating system and therefore accelerate corrosion
processes. This can ultimately result in pitting.
Contamination and deposits in the heating circuit can
cause malfunctions
ON THE SAFE SIDE WITH LOWSALT OPERATION
The problems listed above do not occur at all with
low-salt operation, as neither corrosive salts such as
sulphates, chlorides and nitrates nor alkalising sodium
hydrogen carbonate are in the heating water. The
corrosive properties of deionised water are very low
and in addition, fur cannot form in the boiler. This is the
ideal approach for closed heating circuits, in particular,
because low oxygen input into the heating circuit can
also be tolerated.
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
planning 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 components
(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
consequence: limescale deposits form on the heat
transfer surfaces of the heating. The eciency falls and
the energy costs rise. A rule of thumb is that 1 millimetre
of limescale deposit causes an energy loss of 10%. In
extreme cases it can even cause damage to the heat
exchangers.

20 83054303eUK – Translation into English of the original German operating manual – Subject to change without notice. www.novelan.com
Insulating the hydraulic
connections
Insulate the vibration decouplers and the pipes of the
heating circuit.
NOTICE.
Insulate in accordance with applicable local
standards and directives.
Installation of the control
element
Situated at dierent heights in the front panel of the
unit are four-pin sockets for fastening the control ele-
ment:
1 four upper recesses
2 four lower recesses
Four hooks are located on the back side of the control
element and can be used to hang the control element
on the front facade of the unit:
In general, when the system is lled with deionised
water, the pH value sets itself within the ideal range
due to “self-alkalinisation”. If necessary, a pH value of 8.2
can be very easily alkalised by adding chemicals. In this
way, optimum protection of the entire heating system is
achieved.
MONITORING
Analytical recording and monitoring of the relevant
water values and the added active conditioning
substances is of decisive importance. Therefore, they
should be monitored regularly using appropriate water
test equipment
Flush, ll and bleed the heating circuit…
In addition, bleed the condenser of the heat
pump…
•
Open the lower facing panel…
•
Open the bleed valve…
Following bleeding, close the lower facing panel.