Ovum NHWP06S+ User manual

www.ovum.at
Compact heat pump
NHWP06S+
Planning and assembly instructions
NHWP ASSEMBLY INSTRUCTIONS
01/2018

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 2
Congratulations
We congratulate you for choosing an NHWP from OVUM Heiztechnik
GmbH. With the NHWP, you can count on a revolutionary product, which
brings you a number of advantages. It differs significantly from all other
products available on the market as it is more than just a heat pump. You
are opting for a state-of-the-art compact heat pump, which offers you many
properties and functions, not only with the lowest consumption figures, but
above all with its smart integrated detail solutions. A unique and holistic
energy concept, which is a unique combination of energy production,
energy storage and energy supply management in one compact unit. The
NHWP is your system solution, energy terminal, heating system, battery
and building manager.

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 3
FUNCTIONS OF THE NHWP
FULLY MODULATING HEAT PUMP
The heat source of the NHWP is a modulating
brine heat pump, which was praised by the
independent AIT test institute for two special
features. The NHWP stood out with its very
high efficiency and therefore, very low
energy consumption on the one hand, and an
extremely large modulation bandwidth of only
1.5 kW to more than 10 kW on the other.
HOT GAS TECHNOLOGY
Every modern household needs two different
temperature levels for its energy supply. A low
level for heating (e.g. underfloor heating 35°C)
and a higher one for hot water (e.g. 55°C).
Conventional heat pumps efficiently prepare
the low level, switching to the higher level
when needed, where they operate at lower
efficiency.
The NHWP solves this task in parallel and more
efficiently with a technology that has been
known for many years with what is know as
hot gas technology. While the heat pump is
in the efficient low-temperature mode (e.g. for
underfloor heating), it also prepares the hot
water by using heat recovery from the hot gas
(heat at the compressor outlet), without any
additional energy input. A smart and efficient
solution, which not only saves energy, but
also allows for higher hot water temperatures
while protecting the heat pump.
FRESH HOT WATER PREPARATION
The hot water preparation integrated in the
NHWP is designed as a FWS (fresh water
system). In this type of hot water preparation,
heating water is stored instead of hot water.
If hot water is drawn, this is heated during
circulation. As a result, each drop of hot water
is fresh water, the same as your usual cold
water. This is a decisive benefit in terms of
hygiene. Even after long time away from home
(e.g. a holiday), fresh water comes out of the
storage tank and not old water.
CONSTANT HOT WATER TECHNOLOGY
With the NHWP, you can set the temperature
for draining off water independently of
the storage temperature. This is a decisive
advantage for you, which is only offered by
the NHWP. If the storage tank is heated to a
higher temperature, e.g. by free solar power
to save energy, you still draw the water at the
usual temperature set by you.
CONTINUOUSLY VARIABLE ENERGY SAVING
PUMPS
The NHWP already has all of the necessary
recirculation pumps built-in. The pump for
the brine circuit and the pump for the heating
circuit are designed as output-controlled
energy saving pumps. With these, they will
automatically adapt perfectly to your local
conditions.
500-LITRE STORAGE
Every integrated heating system requires
a storage tank of a good size. This is already
integrated in the NHWP, which saves any
additional installation. On the one hand, it
makes sure that you always have enough hot
water, and on the other, it is an important
module for storing energy.
THERMAL INSULATION
For maximum efficiency, it is not enough that
energy is prepared economically, it is also
important that downtime losses are minimised.
The thermal insulation not only protects the
heat storage tank, but also uses an innovative
method of protecting all of the necessary
components from heat loss. Whether it is a
recirculation pump, shut-off devices or the
storage tank and heat pump - everything is
under the protective thermal insulation cover.
In this way, the losses are reduced by up to
50%.
THERMAL LOCK
If no more energy is needed in the heating
system, then not only is the heating circuit
pump disabled, but the heating circuit is also
mechanically shut off. This feature ensures
that no unnecessary energy can escape from
the thermal insulation cover via the heater
lines.
E-BACKUP
An integrated electrical heating element is
helpful during initial installation (heating,

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 4
system warm-up) on the one hand, while on the
other, particularly large amounts of hot water
(with visitors, peak load) can be provided.
The element can be disabled or operated in
automatic mode. In the event of a fault, the
element ensures the levels of comfort needed
until a visit by an engineer.
MIXER CIRCUIT
Storing energy in a water tank is only possible
by raising the temperature. A mixer circuit has
been integrated into the NHWP, which allows
the NHWP’s storage unit to store solar power.
Even if the storage is heated up to 60°C by
the PV system or power provided by a power
supply company at a lower tariff, the heating
circuit can be fed with low temperatures.
FULL SOLAR PANEL INTEGRATION
The NHWP is your ready-made energy
solution, which helps you to maximise the
energy provided by your solar panel system for
domestic use. With the solar panel monitoring
module, the NHWP recognises free excess
electrical power, uses it to cover the heat
demand or store energy. The power used by
the heat pump is adjusted continuously to the
energy supply over an incredibly wide range.
The NHWP is the only compact heat pump on
the market that allows you to cover up to 100%
of your DHW demand in the summer with
excess current. Thanks to the large 500-litre
storage tank, you have enough storage capacity
to keep sufficient warm water in store from
one excess current period to the next. Only the
NHWP offers you the option of self-sufficient
hot water preparation.
LIVING AREA VENTILATION MANAGEMENT
Do you want to combine your heating system
with living area ventilation? Thanks to NHWP,
you can do this in the simplest way possible. The
ventilation levels are automatically controlled,
the brine circuit is used for cooling the supply
air and the heating and cooling operation
are coordinated with each other without any
intervention.
NATURAL COOLING NKU
With the NHWP optional natural cooling set,
you can use the natural coolness of the ground
for cooling in summer. The natural cooling
control is fully implemented in the NHWP. The
cooling activates automatically and regulates
the temperature of the rooms precisely.
INDIVIDUAL ROOM CONTROL
Thanks to the built-in hydraulic shunt (buffer
zone) in the NHWP, you can equip 100% of your
building with individual room controllers. The
OVUM room controllers regulate the individual
rooms continuously and automatically
recognise the cooling mode.

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 5
SAFETY INFORMATION
PLANNING AND ASSEMBLY INSTRUCTIONS
The following planning and assembly
instructions must be followed. Any action
that deviates from the settings and changes
described will void the warranty.
PREPARATION
- Read through the instructions carefully
and follow the steps.
- Make sure you have enough time to
complete the assembly.
- Create a working area of approx.
5-10m².
- Remove the parts from the packaging
and check the completeness of the
individual parts before assembly (if,
despite inspection in the factory, there
are any missing parts, contact Customer
Service).
- This is ideally a job for two people.
- Keep the required tools within easy
reach.
- Before installing the FWS and the hard
foam parts, all possible connections
should already be made and the safety
group pre-assembled as well as the
storage tank filled or secured against
tipping over.
ASSEMBLY INSTRUCTIONS
The assembly of the FWS and the storage tank
insulation takes about 20 minutes.
The NHWP has a higher risk of tipping over
due to the front-mounted attachments. We
recommend securing the heat pump against
tilting until the tank is filled. Pay attention
to the increased risk of tipping over during
assembly!
For the installation of the fresh water system
you need a pipe wrench; all other components
can be assembled by hand without tools.
RECOMMENDATIONS
The device will only work once it is filled with
water. Do not turn on the NHWP unless the
tank has been completely filled with water.
All work on the unit must be carried out by a
qualified technician.
The device must be installed in accordance
with national electrical installation regulations.
Make sure the wiring has been completed with
cables of the correct size.
All work on the refrigeration circuit must be
carried out by a qualified technician.
TRANSPORT
The following points should be noted during
transport and storage:
The temperature range allowed for transport
and storage is between -20 and +60°C.
Once the heat pump has been installed in
a fixed location, wait at least 1 hour before
starting up the heat pump.

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 6
The NHWP may only be transported on a pallet
in a standing position or lying on its back.
The NHWP has a net weight of about 200kg.
Caution should be exercised during transport.
If transporting by hand truck, make sure the
strap is not placed around the attachments,
but directly on the storage tank through the
side tabs.
DIMENSIONS AND IDENTIFICATION OF
COMPONENTS
energy source out 1“
heating IN 1“
energy source IN 1“
heating out 1“
coldwater 1“
warmwater 1“
935
822 712
1940
1046

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 7
1130
810
INSTALLATION INSTRUCTIONS
The unit may not be installed in the following
locations:
• outdoors (not even under a canopy)
• in areas with by high humidity
• in areas, where there is a risk of explosion
due to gases, vapours or dust
• do not place the unit near any other device,
as it may be damaged (for example, next to
a device that releases steam and grease) or
in a very dusty or corrosive environment
• Make sure the room, where the unit is to
be installed, is adequately protected against
frost
• also make sure that the room, where the
device is to be installed, meets the structural
requirements (the NHWP weighs approx.
800kg, including its contents (water) and
insulation)
• observe the noise emissions of the heat
pump and avoid installing near quiet zones
• avoid shafts leading from the boiler room
to quite zones, e.g. clothes chute from the
bedroom to the utility room
CLEARANCE!
It is recommended that a minimum clearance
to the walls and pipes is maintained. Only
then can the NHWP cover be attached after
installation or connection.
650mm
1300mm
650mm
1400mm
free space
connector pipe
ASSEMBLY SAFETY!
The NHWP must be secured against tipping
over until the tank has been completely
filled. A strap attached to the ceiling or wall is
best suited for this purpose. Caution! Do not
place the strap around the front-mounted
attachments, but use the tabs on the side of
the storage tank or the carrying handle at the
top.

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 8
HEATING CONNECTION
The system is designed for underfloor heating
systems. A combination with a radiator heater
is recommended only up to 45°C. Higher
temperatures in heating operation reduce the
service life.
ASSEMBLY SAFETY GROUP
Note that a safety group must be installed at
the top of the storage TANK before the system
is started up for the first time.
CAUTION! The heat pump may be destroyed
if there is no safety group, . Make sure the
drain for the safety group is led away from
the storage tank (sewer), so as to prevent any
damage to the heat pump by leaking water.
CABLE ENTRY
The cable entries for the power supply as well
as for the external temperature sensor are via
the PVC pipes located behind the fresh water
system. The cable is inserted behind the fresh
water system.
The switch box can be folded out with an
upwards movement.
CONTROLLER VENTILATION
There are ventilation slits at the top of the
NHWP. They may not be covered. Overheating
may damage the controller.
HEATING WATER QUALITY
Please observe the currently valid standards
for heating water quality. If necessary, also
insert a dirt trap at the heating water inlet.
HEATING CIRCUIT
Connect the flow and return lines to the
NHWP. Make sure the shut-off devices and
an expansion vessel have been positioned
according to the layout. We recommend the
venting mode when filling and venting the
NHWP. In the technician level, set the mixer to
"vent" and the mode dial on the heating circuit
pump to "AIR".
CAUTION! After venting, set the mode dial
of the heating pump to the desired delivery
height (approx. 4-6m).
CONNECTING TO AN ENERGY SOURCE
The size of the ground probe must be
appropriate for the heat demand of the building
and the geological conditions. Please note the
available delivery height of the internal brine
pump. Make sure the shut-off devices and
an expansion vessel are positioned according

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 9
to the layout. There is a vent valve above the
brine pump in the NHWP. Vent and flush the
brine circuit.
CAUTION! Make sure the selection switch on
the brine pump is in the "PWM1" position.
BRINE PUMP ADJUSTING WHEEL
WATER CONNECTION
Refer to the FWS section for the positions of
the cold water and hot water connection.
Make sure that all required safety valves have
been installed in the cold water inlet.
SCALDING PREVENTION
The NHWP has a constant hot water system. In
this system, the FWS is regulated to a drawing
off temperature. This ensures that excessively
hot water is not prepared even at higher
storage temperatures.
CAUTION! An increased drawing off
temperature may occur for a short time or in
the event of a defect. Depending on statutory
regulations, additional scalding protection may
be required.
DRINKING WATER QUALITY
Rinse the supply line before connecting the
device to the domestic water system, so that
no metal particles or other foreign objects get
into the device.
Observe the standards applicable in the country
of installation, in particular, with regard to
hygiene regulations and pressure safety.
NOTE! Failure to observe these points may
void the warranty in the event of damage .

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 10
ASSEMBLING THE LINING
8
5
2
4
10
36 11
9
7
1
12
Item no. Description Number
1NHWP (Low Energy Domestic Heat Pump) 1
2Fresh water system 1
3Floor insulation 1
4Ceiling insulation 1
5Ceiling end plate 1
6Angular mounting rail 4
7“Rear” rigid foam sheathing 1
8“Left” rigid foam sheathing 1
9“Right” rigid foam sheathing 1
10 Rigid foam cover with built-in control panel 1
11 “Top” and “bottom” tensioning straps 2
12 Safety group 1

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 11
Mount the fresh water system on the NHWP.
Use the pre-assembled Dutch screw fittings.
WW
WC
CAUTION! The FWS will only work if the selector
switch on the pump is set to "PWM1". The
flow switch only works if the flow is directed
vertically from bottom to top as shown in the
diagram.
FWS PUMP ADJUSTING WHEEL
Mount the safety group.
212
Check that all screw connections are tight
before assembling the hard foam housing.

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 12
Depending on the version, the NHWP storage
tank has an optional sleeve for a recirculation
exchanger. If necessary, this can be installed
here.
3
2
1
1 1/2“ IG for safety group
2 5/4“ IG for recirculation set
(remove dummy plug)
3 Recirculation set
As an optional, the recirculation set may be
installed now.
CIRC.
WW
heat exchanger
stainless steel
1/2“ OD1“ OD
5/4“ OD
FWS IN/OUT 1“
EQ IN 1“
EQ OUT 1“
HZG IN 1“
HZG OUT 1“
Place floor insulation under the sheet metal
cover.
3
Place the cover insulation on the NHWP, while
placing the asymmetrical cutouts above the

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 13
fresh water system.
4
Mount the cover on the NHWP. Use the slots
to place the cover around the safety group, the
FWS pipes, and the cables.
5
You will find four galvanised steel angles in
a package enclosed with the delivery. Place
these using the longitudinal cuts in the rear
hard foam sheathing. Make sure that the
angles are pushed up to the marking.
6
7
mark
mark
Place the rigid foam sheathing behind the
NHWP as shown in the following diagram and
fasten the part with the pre-assembled fixing
brackets.
7

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 14
Now, attach the side hard foam sheathing.
8
9
Place the control unit in the hard foam cover.
Then insert the insulation behind the control
unit.
Mount the mounting plate and guide the
connection cables through the rubber
grommet.
The lid holds onto the pre-assembled hard
foam parts by positive locking. First, try to
hang the lid on the left or right side of the
guide cut and then on the other side.

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 15
10
Finally attach the tensioning straps to the
machine. A few brief rests may be required
during this. Please do not overtighten the
straps; otherwise, the hard foam parts could
be damaged.
11
11
A

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 16
1.
1
4
5
6
2.
10
9
8
236
7
3.
ow-
direction
6
11
1 Cooler/heat
exchanger
2 Natural cooling
mixer
3 Lock
Natural cooling
4 Heating
return flow 2x1“
5 Heating
return flow 2x1“
6 Flat seal
1“
7 Brine 3x1“
8 Brine 2x1“
9 Brine 2x1“
10 Brine 2x1“
11 Gravity
brake 1“
NCS INSTALLATION
The optional natural cooling set is prefabricated and can easily be integrated into the EQ or HZG
circuit.

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 17
4. CONNECTING NCS
ES IN
H IN
ES OUT
H OUT
The natural mixer (2) must
point in the direction of ES.
5. NCS ELECTRICS
brown = clamp B4
blue = clamp B3
black = clamp C36
white = no connection
NOTE! When delivered, the mixer for the natural cooling set is in a 50% position. Do not start up the
NHWP before you have connected the NCU mixer electrically. If there is no electrical connection,
the HP will be in cooling mode.
Make sure the mixer is mounted correctly. The triangle symbol on the brass body of the mixer must
point towards the storage tank. Test the flow by closing the ball valve.
LED indicators on the mixer
Orange Triangle Cooling OFF 0%
Orange blue Triangle square Cooling ON 25%
Blue Square Cooling ON 50%
Blue green Square circle Cooling ON 75%
Green Circle Cooling ON 100%

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 18
PSC HEAT PUMP LOCK
If the main power supply is temporarily interrupted by the energy supplier because of the tariff
model, a relay for signalling the PSC lock must be installed in the NHWP.
Requirement: 1 relay, 220V AC coil, 2 breakers
Relais EVU
A1
A2
1
2
3
4
EVU-Sperre Wärmepumpe
A2 A5
C5
C6
Ovum Modul 1
DI6
DI5
B1/2
NOTE! To activate the PSC lock definitively, you must set the function of the lock in the SYS/
TECHtechnician level . HZG+HW is switched off by default. It is important to ensure an uninterrupted
power supply at terminal A7. If necessary, the jumper for phase 1 or 2 should be removed.

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 19
POWER SUPPLY REGULATOR
230V AC
24V DC
L
N
GND
24V
Stromversorgung
Power supply
PE
N
L3
L2
L1
Stromversorgung
power supply
PE
N
L3
L2
L1
Variante I
400 VAC
Versorgung/Supply
Display Verbinder/connector
Ovum Modul 1 Ovum Modul 2 Ovum Display
Display Verbinder/connector
F1 (6A)
Ovum Inverter
F2 (16A)
K1 (A)
A1
A2
1
2
3
4
Q1 (A)
A1
A2
1
2
3
4
5
6
7
8
K2 (E)
A2
A1 1
2
3
4
F2 (10A)
E-Heizstab
M
1~
FWS
Pumpe/pump
Hauptschalter
Mainswitch
1
2
16A 12A 12A
B1/2/3
B4/5
E9
E3
E1/2
24V+
24V-
COM
24V+
24V-
COM
24V+
24V-
L N
PE
A/+ B/-
CAN-
CAN+
C39 C40
CAN-
CAN+
CAN-
CAN+
C37
C38
A1
A2
A3
A4 A5 A6 A7
A8
A9
A10
2,5² schwarz/black 2,5² schwarz/black
2,5² braun/brown
2,5² grau/grey
2,5² blau/blue
2,5² grün-gelb/green-yellow
1,5² schw. 2,5² schw.
1,5² blau/blue
2,5² blau/blue 2,5² grün-gelb/green-yellow
0,5² weiß/white
0,5² rot/red
0,5²
grau/grey
0,5²
grau/grey
0,5²
gelb/yellow
0,5² orange
Relais EVU
A1
A2
1
2
3
4
Optional
Jumper opt. (20A) 16A
12A 12A
A1
A2
A3
A4 A5 A6 A7
A8
A9
A10
A1
A2
A3
A4 A5 A6 A7
A8
A9
A10
20A
Variante II
230/400 VAC
Versorgung/Supply
Variante III
230 VAC
Versorgung/Supply
6A
400 VAC Versorgung/supply 230/400 VAC Versorgung/supply 230 VAC Versorgung/supply
Jumper opt. (20A)
Variante I E-Heizstab 4kW or 6kW Variante II E-Heizstab 4kW or 6kW
Variante III E-Heizstab 2kW

www.ovum.at
NHWP06S+
Planning and assembly instructions
Page 20
ANALOGUE/DIGITAL INPUTS/OUTPUTS MODULE 1
ND
HD
H.G.
S.G.
EQ EIN
ES IN
EQ AUS
ES OUT
HZG VL
HZG OUT
HZG RL
HZG IN
Außentemp.
outside temp.
Lüftung
Analog
Stufe
Motorsch.
EQ-Pumpe
Solar Energiezähler
solar energy meter
Ext. Sperre HZG
ext. barrier HEA
kWh-Strom
kWh-electricity
kWh-Heizung
kWh-heating
EQ Pumpe
ES pump
M
1~
HZG Pumpe
HEA pump
M
1~
Anforderung
AUS 24V
requirement
OUT 24V
( EEV2 ) ( EEV3 )
FWS Pumpe
PWM
Reserve
( EEV1 )
Ext. Sperre WW
ext. barrier HEA
Anforderung EINGANG 24V
requirement input 24V
SOA
SOB
SOC
SOD
COM 12V
COM 12V
SOA
SOB
SOC
SOD
COM 12V
SOA
SOB
SOC
SOD
COM 12V
Ovum Modul 1 - Analog
Ovum Modul 1 - Digital
Reserve
K2 (E)
A1
A2
1
2
3 4
Hauptschalte Rückmeldung
mainswitch feedback
K1 (A)
A1
A2
OVUM
Inverter
EQ Pumpe
PWM
System Lüfter
Regelung
system fan control
Q1 (A)
A1
A2
HZG Mischer
0-10V
M
Schwarz
Blau
Braun
3-Wege Ventil
WW/HZG (n. NHWP)
3-way-valve
WW/HEA (only. NHWP)
AI1
B1/2
C15
C16
AI2
AI3
AI4
AI5
AI6
AI7
AI8
AI9
AO1
AO2
AO3
AO4
AO5
AO6
GND
C17
C18
C19
C20
C21
C22
C23
C30
C31
C32
B1/2
B3/4
C33
C1
C2
C3
C4
C5
C6
C7
C8
C9
B1/2
E1/2
B1/2/3
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
DI9
CO1/2
CO3/4/5
CO6/7
NO1
NO2
NO3
NO4
NO5
NO6
NO7
E4
E5
E6
A8/9
E10
E11
B4/5
B3/4/5
COM
ReserveExpansionsventil
expansion-valve
Relais
EVU
A1
A2
1
2
3
4
Optional