Kospel HPS Z Series User manual

HPS.Z
Assembly and operating instructions
Original instructions
Heat Pump

2
This appliance can be used by children aged from 8 years and
above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge if they have
been given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and user
maintenance shall not be made by children without supervision.
Heat pump HPS.Z contains uorinat-
ed greenhouse gases.
WARNING
Do not use means to accelerate the defrosting process or to
clean, other than those recommended by the manufacturer.
The appliance shall be stored in a room without continuously
operating ignition sources (for example: open ames, an
operating gas appliance or an operating electric heater.
Do not pierce or burn.
Be aware that refrigerants may not contain an odour.
Appliance shall be installed, operated and stored in a room
with a oor area larger than X m2.
NOTE The manufacturer may provide other suitable examples or may provide additional information about
the refrigerant odour
This appliance is intended to be used by expert or trained
users in shops, in light industry and on farms, or for
commercial use by lay persons

3
EN-114B_f.1294
1. Familiarising yourself with this user's manual will allow the correct installation and
operation of the device, ensuring its long-term and reliable operation.
2. The appliance shall be installed in accordance with national wiring regulations
3. Ecient and made in accordance with PN-IEC 60364 electrical installation.
4. The appliance may only be installed and operated in closed heating systems according
to EN 12828, taking into account the relevant installation, service and operating
instructions.
■ Work on the refrigerant circuit may only be carried out by authorised refrigeration
engineers.
■ The system must be commissioned by the system installer or a qualied person
authorised by the installer.
5. Inadequate environmental conditions may damage the installation and endanger
the safety of operation (avoid air pollution through chlorine-alkanas contained e.g.
in paints, solvents and cleaners, avoid constant high humidity e.g. due to frequent
drying of washing).
6. Installation of the appliance and execution of the electrical and hydraulic system
shall be entrusted to a specialized service establishment and strictly adhere to the
instructions for installation and operation of the device.
7. All installation work must be carried out with the electricity and water supply cut off.
8. As a result of electrostatic discharge, sparks may appear that may ignite the leaking
refrigerant (R32). Before carrying out work, touch grounded objects, e.g. heating or
water pipes, to discharge static loads.
9. Hot surfaces can cause burns.
10. Direct contact with liquid and gaseous refrigerant can cause serious damage to
health.
11.The electrical installation shall be equipped with differential current protective devices
and means of ensuring that the device is disconnected from a power source at
a distance between the contacts of all poles of not less than 3 mm.
12.The heat pump is a surge-sensitive device and the electrical system must include
surge protection devices.
13. In the event of an open re, there is a danger of burns.
14. The refrigerant is air-displacing, colourless, embarrowing gas.
■ R32 forms a combustible mixture in combination with air.
■ R410A is not ammable.
Safety instructions

4
Description
Heat pump HPS.Z is a device used to heat/cool the building and heat the DHW.
The device consists of two units:
- external unit HPSO, compressor heat pump.
The principle of operation of the device consists in the capture of heat from the
environment and transfer to the heating circuit in the building. Low temperature air
heat is transmitted by the evaporator to the installation of a heat pump lled with
refrigerant, which evaporating turns into gas. From the evaporator, the gas is sucked in
by the compressor, which raises its temperature during compression and directs it to
the condenser. In the condenser, heat is returned to the refrigerant that lls the central
heating system, and the cooled liquid ows through the expansion valve and returns
to the evaporator, after which the whole process begins again. In the case of cooling,
this cycle is reversed and the heat is taken from the building and discharged outside.
- indoor HPSI unit with a built-in heating system controller.
The principle of operation of the device is based on the need to adjust the eciency
of the heat pump compressor with the switching of the electric heater via the internal
module controller. The internal module controller adjusts the heating power according
to the set heating curve. If the heat pump is unable to cover the building's heat needs
on its own, the controller automatically activates the electric heater, which together
with the heat pump produces the desired temperature of the heating medium.
Outside temperature range for air-water heat pumps
Air-water heat pumps use external air as a heat source. Operation is only ecient within
specied outdoor temperature ranges, e.g. between –20°C and 35°C. A notication
appears on the heat pump regulator. To cover the heat demand for space heating
and hot water heating outside the temperature limits, the heat pump regulator shall, if
necessary, automatically switch on available auxiliary heating equipment, e.g. electric
auxiliary heating.
Required additional equipment
Modbus connection cable between the external unit and the indoor unit with a length
of 15 m or 30 m.

5
EN-114B_f.1294
Cooling circuit
All components of the refrigeration circuit, with the exception of the condenser, are
located in the external module, including the refrigeration circuit controller with electronic
expansion valve. Depending on the operating conditions, the compressor power is
adjusted with an inverter. The internal and external modules are connected to each other
by refrigerant hydraulic hoses. For cooling heat pumps, the cooling circuit is reversed for
room cooling. Overview of heat pumps assigned to used refrigerant: see section "Types".
Hydraulic installation
The high-performance circulation pump (secondary pump) built into the internal module
supplies heating water to the secondary circuit. The central 3-way switching valve
"heating/heating hot water" is responsible for switching between space heating and
hot water heating.
Installation with heating water buffer tank
■ Space heating
The heat pump heats 3 heating/cooling circuits:
1 heating/cooling circuit without a mixer and
2 heating/cooling circuits with mixer.
■Room cooling
The heat pump can only cool for one of the max. 3 heating/cooling circuits or through
a separate cooling circuit. The heating water buffer tank is bypassed by a hydraulic
bypass.
Installation with heating/cooling water buffer tank
■ Space heating
The heat pump can heat up to max. 3 heating/cooling circuits: 1 heating/cooling
circuit without mixer and 2 heating/cooling circuits with mixer.
■ Room cooling Heat pump can cool max. 3 heating/cooling circuits. It is not possible
to cool the rooms through a separate cooling circuit.
Heat pump regulator
The entire heating system is monitored and controlled by the heat pump regulator.
The heat pump controller is built into the internal module. Communication between the
internal and external modules takes place via the Modbus.

6
Requirements regarding on-site connections
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FG
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Indoor unit
A- Hot gas line: see table below
B- Liquid line: see table below
C - DHW cylinder ow (heating water
side): G1 1/4 (internal thread)
D- Heating water return and DHW
cylinder return: G1 1/4 (internal
thread)
E - Heating water ow G1 1/4
(internal thread)
F- Cable entry <42 V
G- Cable entry 400 V~/230 V~, >42 V
Refrigerant lines
Meaning
Indoor unit connection types
HPSI-06 HPSI-09
Pipe Ø UNF thread Pipe Ø UNF thread
Liquid line 6mm 1/4 10mm 5/8
Hot gas line 12mm 1/2 16mm 7/8

7
EN-114B_f.1294
External unit
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External unit with 1 fan
HPSO-6/230
External unit with 1 fan
HPSO-8/230
External unit with 2 fans
HPSO-12/400; HPSO-16/400

8
Installing the external unit
Transport
Note!
Avoid damaging the appliance during transportation. Never put weight on top of the
appliance.
Note!
If the compressor in the external unit is steeply angled, lubricant will enter the refrigerant
circuit and damage the appliance. Max. tilt angle: 45° for four minutes, after that time 30°.
Type of installation
■Floorstanding installation with cable entry above ground level
■Floorstanding installation with cable entry below ground level
■Wall mounting
Floor mounting:
■ Use supports for oor standing installation.
To secure the console use an anchor with a pulling force of at least 2.5 kN.
■ Where such supports cannot be used, install the external unit free-standing on a solid
base of at least 100 mm height.
■ In dicult climatic circumstances (temperatures below zero, snow, humidity) install
the appliance on a plinth of approx. 300 mm height.
■ Weight of the external unit should be taken into account: see "Technical data".
Wall mounting:
■ Use the wall mounting bracket set
■ When mounting the unit on a wall, the wall must offer sucient load-bearing capacity.
Positioning:
■ Never install with the discharge side facing the main wind direction.
■ Do not install the outdoor unit through cellar wells or bottom baths.
■ Design wall outlets and protective pipes for the refrigerant lines and electrical cables
without moulded parts and changes of direction.

9
EN-114B_f.1294
Impact of weather conditions:
■ When installing in wind-exposed areas, pay attention to wind loads.
When installing an external module on a at roof, signicant wind loads may occur
depending on the wind load zone and the height of the building. In this case, we
recommend to support the structure taking into account the requirements of DIN
1991-1-4.
■ Incorporate the external unit into the lightning protection system.
■ Consider the heat absorbtion (heating mode) and heat emission (cooling mode) of
the unit when planning your weatherproong measures or an enclosure.
Condensate:
■Ensure the condensate can drain freely, and create a permanent gravel bed below
the external unit as a soakaway.
Insulation of structure-borne noise and vibrations between the building and the external
unit,:
■ When cable entry is above ground level, t pipe bends as anti-vibration mounts in
refrigerant lines (see "Connecting refrigerant lines").
■ Route electrical cables/leads between the internal and external units free of stress.
■ Installation only on walls with high weight per area (> 250 kg/m2), in other words not
on lightweight walls, roof structure etc.
Installation location
■ Select a site with good air circulation, so that the cooled air can dissipate and be
replenished by warm air.
■ Never site in corners of rooms, recesses or between walls.
This might result in the discharged air re-entering the unit.
Note!
Limiting the free ow of air can lead to re-suction of cooled (heated in cooling mode) air
and lead to disruptions in the operation of the unit, deterioration of eciency and, as a
result, an increase in electricity consumption.
■ When installing the unit where it is exposed to wind, ensure that the wind cannot
inuence the fan area. This could result in an "air short circuit" between the discharged
and the inrushing air. Strong wind can have a negative inuence on the evaporator
ventilation.
■ Take the lengths of the refrigerant lines into account (see "Connecting refrigerant
lines").
■ Select the installation site so that the evaporator cannot be blocked by leaves, snow
etc.
■Select the installation site with due consideration of the statutory regulations on
sound dissipation and reections.

10
Design guidelines
■ Never install next to or below bedroom windows.
■ Do not install in basement wells or hollows in the eld.
■Keep min. 3 m distance from cellar wells and windows.
■ Never install closer than 3 m to pathways, downpipes or sealed surfaces. The
cooled air in the discharge area creates a risk of ice forming when there are outside
temperatures below 10°C.
■ Avoid "short circuits" of air streams with ventilation devices. Keep min. 3 m distance
from the suction area of the ventilation equipment.
■ The installation site should be easily accessible, for example for maintenance work
(see "Minimum clearances").
A
B
AB
D
E
F
G
GE
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Minimum clearances
External unit with 1 fan
A - Air discharge
B- Air intake
d - Min. front service access
Dimensions [mm] a b c d
Cable entry above ground level ≥ 100 ≥ 100 ≥ 300 ≥ 1000
Cable entry below ground level ≥ 100 ≥ 400 ≥ 300 ≥ 1000

11
EN-114B_f.1294
A
B
AB
D
E
F
G
GE
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External unit with 2 fans
A - Air discharge
B- Air intake
d - Min. front service accessu
Dimensions [mm] a b c d
Cable entry above ground level ≥ 100 ≥ 200 ≥ 300 ≥ 1000
Cable entry below ground level ≥ 100 ≥ 400 ≥ 300 ≥ 1000

12
Floor mounting
Foundations
Mount supports for ground mounting on 2 horizontal foundation benches. It is
recommended to make a concrete foundation according to the drawing. The given layer
thicknesses are indicative values. They must be adapted to local conditions. Follow the
rules of construction technology.
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C
C
E
D
K
J
CP
C
P
C - Concrete foundations
D - Only for entries under ground level: Underground plastic pipe DN 125 with cover
and 2 45° tubular knees, sealing the duct culvert is in the investor's duties.
E - Protection of the foundation against freezing (compacted gravel, e.g. 0 to 32/56
mm), layer thickness in accordance with local requirements and construction
technology rules
P - Gravel substrate for easy soaking condensate. Apply an anchor with a pulling force
of at least 2,5 kN.
Dimensions [mm] e f g h
External unit with 1 fan 1000 750 90 130
External unit with 2 fans 1000 676 90 130

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EN-114B_f.1294
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L
A
E
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E
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B
G
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F
H
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C
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E
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Mounting on a substrate with bracket, entries above ground level
b - Distance from the wall when passed to the wire above ground level: see "Minimum
clearances"
A - Brackets for ground installation
B - Bottom sheet openings for free condensate drain: Do not close holes
C- Foundation belts
E - Protection against freezing of the foundation (compacted gravel, e.g. from 0 to
32/56 mm), layer thickness in accordance with local requirements and construction
technology rules
F - Electrical wires connecting the internal module to the external module and
supplying the electrical wire of the external module: Lay the wires without stress
G - Pipe clamping ring with EPDM insert
H - Tubular tting for vibration compensation in hot gas line.
We recommend installing a tubular tting to compensate for vibrations especially
in lines < 5 m.
K- Pavement, terrace
L- Soil
M - Flexible separation layer between the foundation and the building

14
Mounting on a substrate with bracket, entries under ground level
K
B
A
E
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C
F
M
LE
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b - Distance from the wall when passed
to the wire under ground level: see
"Minimum clearances"
A - Brackets for ground installation
B - Bottom sheet openings for free
condensate drain: Do not close holes
C- Foundation belts
E - Protection against freezing of the
foundation (compacted gravel, e.g.
from 0 to 32/56 mm), layer thickness in
accordance with local requirements and
construction technology rules
F - Electrical wires connecting the internal
module to the external module and
supplying the electrical wire of the
external module: Lay the wires without
stress
K- Pavement, terrrace
L- Soil
M - Underground plastic pipe DN 125 with lid
and 3 30° tubular ttings, sealing the duct
passage in the cover within the scope of
the investor's duties
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A
C
D
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B
A - Bracket for mounting on the ground
B - Gravel substrate for easy condensation
C - Concrete foundation: chapter
"Foundations"
D - Underground plastic pipe DN 125 (only
for entries under ground level)
Note
We recommend letting condensate drain away
freely (without condensate pipe).

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EN-114B_f.1294
B
C
D
A
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[

A - Bracket for mounting on the ground
B - Gravel substrate for easy condensation
C - Concrete foundation: chapter "Foundations".
D - Underground plastic pipe DN 125 (only for
entries under ground level)
C
D
B
A
K
H
E
F
G
C
D
B
A
K
E
F
G
H
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ป ป
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Wall mounting with wall mount bracket kit
Installation must be carried out using only wall mounting bracket kits.
b - See chapter: see "Minimum clearances"
A - Bracket vibration damper
B - Bottom sheet openings for free condensate drain: Do not close holes
C - Wall mount bracket (optional)

16
D - Gravel substrate for easy condensation
F - Electrical wires connecting the internal module to the external module and sup-
plying the electrical wire of the external module:
Lay the wires without stress.
G - Pipe clamping ring with EPDM insert
H - Tubular tting for vibration compensation in hot gas line.
We recommend installing a tubular tting to compensate for vibrations especially
in lines < 5 m.
K - Electric auxiliary heating of condensate capture bath
Installing the indoor unit
Transport
Avoid damaging the appliance during transportation. Never put weight on top of the
appliance..
Minimum room area in combination with R32 refrigerant.
It is essential to maintain a minimum room area of 3 m2.
■The minimum area of a room can be calculated in a group of rooms.
■ When adding refrigerant due to a longer line refrigerant, there is no need to adjust
the minimum surface area rooms.
■ Strictly observe the maximum lling volume of 1850 g.
Minimum room volume (according to EN 378) in combination with the refrigerant R410A
With the use of a given refrigerant and based on the specied volumes lling, the following
minimum room volume can be determined: 5,7 m3.
For cords > 10 m long, is required additional refrigerant. The minimum volume of the
room must be recalculated depending on the additional lling.
The minimum volume of the technical room according to EN 378 depends on the quantity
refrigerant charge and its chemical composition.
Vmin = mmaks
G

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EN-114B_f.1294
Vmin Minimum room volume in m3
mmaks Max. refrigerant lling quantity in kg
G Practical limit value according to EN 378, depending on the chemical composition
refrigerant. Up to R410A: 0,44 kg /m3
Note
If several heat pumps are installed in one room, it is necessary to calculate minimum room
volume for the device with the largest amount of refrigerant.
Attention!
Escaping ammable refrigerant (R32) may cause a re in the premises with insucient
air supply.
■ Keep a minimum oor space.
■ Provide adequate ventilation and exhaust ventilation systems.
■ In the installation room, do not use ignition sources, eg. open sources re, gas ap-
pliance on, electric heater with exposed heating element etc.
Do not smoke in the technical room.
■Electrical components installed within 1 m of conductive parts the refrigerant in the
installation must meet the requirements for hazardous areas explosion, zone 2.
Minimum spacing
In combination with R32 refrigerant: Strictly observe the minimum room area in addition
to the minimum distances.
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The assembly of indoor module on the wall
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■ The outdoor unit is lled with refrigerant.
■Through sleeves, for sealing the opening of the refrigerant lines are delivered with
the indoor module.
■ Refrigerant lines containing a ammable refrigerant (R32) must be routed between
the indoor and outdoor units without breaks (EN 60335).
Anti-fall arches
The use of anti-fall arches ensures reliable cooling oil return to the compressor.
Attention!
Errors in the design and installation of anti-fall arches can lead to damage to the device.
■The outdoor module is more than 5 m higher than the indoor module:
Anti-fall arches must be provided in the vertical hot gas line.
■The indoor module is set higher than the outdoor module:
There is no need to install anti-fall arches.
Connecting the refrigerant piping

19
EN-114B_f.1294
Outdoor unit higher than indoor unit
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A
B
D
E
C
D
A- outdoor module
B - hot gas line
C- liquid line
D- indoor module
E - anti-fall arches
Outdoor module lower than indoor module
C B
D
A
A- outdoor module
B - hot gas line
C- liquid line
D- indoor module
Wall culvert
The indoor unit is connected to the outdoor unit via wires refrigerant and electric
connecting pipe. For this purpose, wall entries are required. In the case of making culverts,
pay attention to load-bearing elements, lintels, insulation elements (e.g. vapor barriers),
etc.
B
C
D
E
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A
F
A - outside the building
B- wall
C - PCW or PE pipe etc.
D - diffusion-tight thermal insulation
E - refrigerant cords
F - inside the building

20
Cords length
■ Max. height difference indoor module - outdoor module: 10 m
■Min. cord length: 5 m
■ Max. cord length:
Types HPS.Z-06/230; HPS.Z-08/230: 25 m
HPS.Z-12/400 types; HPS.Z-16/400: 30 m
Sound and vibration damping
Notes on wiring installation
Wall culvert:
■ No wall opening in load-bearing elements, lintels, elements insulation (e.g. vapor
barriers) etc.
■Avoid acoustic bridges, ie. contact between the metal (refrigerant line) and the building
structure.
Laying cords:
■Route the electric lines stress-free and separate from the refrigerant lines.
■Lay the hot gas line with a bend.
As a result, the transmission of vibrations via the pipe walls is reduced.
The pipe bend can be installed inside or outside the building.
■ Pipe bend to compensate for vibrations with a short hot gas line it should be narrower
than with a longer hot gas line.
■ Insulate all refrigerant pipes.
Fixing the refrigerant lines:
■ Only secure the refrigerant lines with pipe clamps with exible insulating insert
(EPDM).
■Attach the vibration compensation pipe bend directly behind the pipe bend (towards
the outer wall).
■ Secure the refrigerant lines with pipe clamps at a distance 2,0 m. We recommend
using clamps to secure the refrigerant lines pipes at a distance of 1,5 m.
■We recommend the installation of pipe clamps only on components with a weight
per square meter ≥ 250 kg / m2.
■ Do not install refrigerant lines on partition walls or ceilings that separate from the
rooms that require a low ceiling noise level (e.g. bedroom).