JBG HT ZHHS-01-10K-R290-V5-M User manual

ZHHS-01-10K-R290-V5-M | ZHHS-01-15K-R290-V5-M
SERVICE MANUAL
HEAT PUMP
JBG-2 SP. Z O.O. RESERVES THE RIGHT TO MAKE CHANGES TO THE PRODUCTS AND INFORMATION CONTAINED IN THE DOCUMEN-
TATION WITHOUT NOTICE. ALL RIGHTS RESERVED.
Translation of the original manual
ATTENTION!
BE SURE TO READ THE INSTRUCTION
MANUAL BEFORE USE

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SERVICE MANUAL – HEAT PUMP
1. TABLE OF CONTENTS
1. IDEA OF ACTION ....................................................................4
2. SAFETY ............................................................................4
2.1. Marking system ...................................................................... 4
2.2. Important warnings ...................................................................6
2.3. Risks as a result of product changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4. Risks of personal injury and property damage as a result of improper maintenance and repair or
failure to do so ....................................................................... 7
2.5. Risk related to improper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.6. Risk of burn injury .................................................................... 7
2.7. Risk of malfunction due to incorrect electrical supply...................................... 7
2.8. Risk of environmental contamination from leaking refrigerant .............................. 7
3. starting up the heat pump ............................................................8
3.1. Controller Main Screen................................................................ 8
3.2. Menu Icons ..........................................................................8
3.3. Turning on and o ....................................................................9
3.4. CH and DHW temperature settings .....................................................9
3.5. Logging in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.6. Options and settings ..................................................................10
3.6.1. CH/DHW Calendar.............................................................10
3.6.2. Calendar......................................................................10
3.6.3. Setting a schedule .............................................................10
3.6.4. Vacation Periods...............................................................11
3.6.5. Week view ....................................................................11
3.6.6. Special days ..................................................................11
3.6.7. Date and time .................................................................11
3.6.8. Manufacturer ..................................................................11
3.6.9. Service .......................................................................11
4. UNIT OPERATION STATUS ...........................................................12
4.1. Equipment Status.....................................................................12
4.2. Other information.....................................................................12
5. PROGRAMMABLE DISPLAY ..........................................................14
5.1. Control ..............................................................................14
5.2. EEV .................................................................................19
5.3. Compressor ........................................................................20
5.4. Heater ..............................................................................21
5.5. Source .............................................................................23
5.6. Unit ................................................................................24
5.7. Alarm logs ..........................................................................29
5.8. Settings ............................................................................30

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SERVICE MANUAL – HEAT PUMP
1. IDEA OF ACTION
The principle of the heat pump is to collect heat from the so-called low-temperature lower source (-20°C to
+35°C) and transfer the heat to the high-temperature upper source (CH and/or DHW system). This process is
carried out with electricity supplied to the compressor drive. In systems with a heat pump, it is possible to use
both the hot side (upper source), e.g. for heating purposes, and the cold side (lower source - air), e.g. for air
conditioning or refrigeration.
In the heat pump settings, we can select the following modes of operation:
• Plant – central heating,
• DHW – domestic hot water,
• Plant + DHW - central heating + domestic hot water.
2. SAFETY
Before using the device, it is essential to read the instruction manual. Failure to do so may lead
to improper operation of the device, malfunction, and may endanger the lives of those operating
the device.
2.1. Marking system
Attention - important content. Procedure to which special attention should be paid.
Caution - a task that requires special attention. Very important information regarding use.
Electricity - information about the electrical system, tasks related
to connecting the device to the electrical network.
Gloves - activities that require additional personal protection.
A ban placed on electrical and electronic devices reminding
the public not to throw items in trash containers.

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SERVICE MANUAL – HEAT PUMP
Caution - hot surfaces.
Caution - moving parts.
Warning - harmful substance, risk of suocation
Warning – risk of explosion.
Warning – sudden (loud) noise
Warning – automatic activation
Warning – low temperature
R290
Warning of fire hazard substances in combination with R290 refrigerant.
Fire, open flame and smoking prohibited.
Tab. 1. Marking system used

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SERVICE MANUAL – HEAT PUMP
2.2. Important warnings
The device is not intended for use by children. Read this manual before use.
Assembly, disassembly, installation work
and maintenance of the device must be
performed by qualified personnel.
It is forbidden to make any changes to the
structure of the unit. Failure to do so may result
in injury to persons or damage to the unit.
Before performing any operations on the
unit, make sure that the electrical power
to the heat pump unit is turned o.
If the power cord becomes loose or
damaged, make sure to always call
a qualified person to repair it.
The power supply to the device
must be grounded. The device should be kept away from environments that are flammable or corrosive.
A dedicated electrical connection should be used
to power the device, otherwise, failure may occur. Do not touch the grille of the air exhaust and outlet.
Do not direct a stream of water
directly on the device. Power leakage
or product failure may occur.
When the device is in operation, never cover it
with clothes, cloth or other material that blocks
the ventilation of the product, as this may lead to
low eciency or even malfunction of the device.
If the power cord is damaged, take the device out
of service and call a qualified person to repair it.
It is mandatory to use the appropriate heat
pump circuit breaker and make sure that the
power supply complies with the specifications.
Otherwise, the unit may be damaged.
Tab. 2. Important warnings

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SERVICE MANUAL – HEAT PUMP
2.3. Risks as a result of product changes
• Never remove, bridge or block safety devices.
• Do not tamper with safety devices.
• Do not make any changes to the product, to the supply lines, to the heating circuit safety valve.
2.4. Risks of personal injury and property damage as a result of improper maintenance
and repair or failure to do so
• Perform maintenance annually before the heating season.
• Never perform repairs or maintenance work yourself.
• Have an authorized installer perform repairs and maintenance work.
• Adhere to designated maintenance intervals.
2.5. Risk related to improper use
Improper use can lead to damage to the heat pump, danger to those operating the unit and
others in the vicinity.
2.6. Risk of burn injury
The pipes from the water exchanger located in the heat pump should be carefully insulated,
since the maximum possible temperature of the pipes is 75 degrees Celsius.
2.7. Risk of malfunction due to incorrect electrical supply
Avoid interference with the operation of the product, the electrical supply should be within the speci-
fied limits:
• 3-phase: ~400 V (+10%), 50 Hz
2.8. Risk of environmental contamination from leaking refrigerant
The product contains refrigerant R290 called natural refrigerant gas. The GWP rating of this refrigerant is 3.
Only an installer with the
proper licenses issued by the
manufacturer and protective
equipment may perform instal-
lation and maintenance work.
Installation of the unit must
be a minimum of 1m away
from windows, doors, lighting
ducts, roof windows, hatches,
drain pipes and ventila-
tion ducts due to possible
leakage of flammable gas.
R290
In case of repairs, do not use
sparking devices or other
devices that can cause an
ignition of the refrigerant.
R290
Condensate drainage must
not be introduced into the
sewer system, as it may create
an explosive atmosphere.
R290
Do not use open flames or
other devices that can heat up
the temperature to 370°C in
the heat pump environment.
In the event of a leak or suspected leak of
refrigerant, immediately turn o the unit.
Then remove any equipment from the envi-
ronment that may be a potential source of
fire and contact the service department.

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SERVICE MANUAL – HEAT PUMP
3. STARTING UP THE HEAT PUMP
3.1. Controller Main Screen
Visualization of pump operation: fan operation
heating mode stop by alarm shutdown mode
pump o defrost standby mode
1 – outdoor temperature 4– current date and time 6– active calendar
2 – DHW temperature 5– heat pump status (mode) 7– installation operation mode
3– CH temperature
3.2. Menu Icons
1– home screen 3– alarm 5– Info (About)
2– options and settings 4– CH i DHW temperature setting
if there is a number next to the icon it means the number of active alarms

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SERVICE MANUAL – HEAT PUMP
3.3. Turning on and o
Unit is on Unit is o
3.4. CH and DHW temperature settings
CH operation point
Measured value DHW operation point Measured value
Settings should be made for the various available modes of operation.
3.5. Logging in
Access to the “Options and Settings”
is password-protected.
Default passwords:
- User: 1234

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SERVICE MANUAL – HEAT PUMP
3.6. Options and settings
Calendar CWU – DHW schedule
Calendar CH – schedule plant
Device – advanced settings
Parameter – Heater settings
Settings – Date/time and other
Serwis – service technician settings
3.6.1. CH/DHW Calendar
Calendar activation
3.6.2. Calendar
Operation modes of the installation
during schedule activity:
Inactive Comfort
O Boost
Economic
3.6.3. Setting a schedule
The working day of the unit can be divided into 4 periods, for which you need to set a time interval and assign
an operating mode.
The value is changed by operating with the up and
down arrows.
Confirm and cancel .
The icon can be used to copy the settings
parameters of one day to the next.

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SERVICE MANUAL – HEAT PUMP
3.6.4. Vacation Periods
Setting vacation periods is implemented by selecting a date range. Within this range, the pump will operate in
the selected mode, regardless of the settings of the standard calendar.
3.6.5. Week view
The weekly calendar is presented in the form of
colored bars that show the mode set.
Activities are according to the colors of the mode
icons on the right. Clicking on the bar of each day
takes you to the day settings.
3.6.6. Special days
It is possible to set up to 6 special days on which the
heat pump will operate in the selected mode inde-
pendently of the standard operating calendar. We can
freely choose the mode of operation on a given day.
Clicking on the date will bring up the setting window.
3.6.7. Date and time
3.6.8. Manufacturer
This option is for the Heat Pump Manufacturer only.
3.6.9. Service
This option is for the Heat Pump Service Technician only.

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SERVICE MANUAL – HEAT PUMP
4. UNIT OPERATION STATUS
4.1. Equipment Status
Compressor: demand for compressor power is
expressed in percentage of (%), rps – obr/s
Fan: Active mode: o/on/accelerated/defrost/pre-
ventive(?)/anti-freeze/manual
Circulation pump: on/o
DHW Pump: on/o
Heater: on/o
3DR Valve(?): central heating/ domestic hot water
4.2. Other information
Compressor operation Expansion valve operation
Compressor parameters Expansion valve parameters.
Evaporator operation Defrost Status
Air exchanger parameters Defrost Mode parameters

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SERVICE MANUAL – HEAT PUMP
When you press Info, you can see the operating
statuses of the devices. The meanings of each abbre-
viation are explained in the attached table.
U1 Discharge temperature B1 Input temperature to the
exchanger of the unit
U2 External temperature B2 DHW tank temperature
U3 Suction temperature B3 CH buer temperature
U4 Suction pressure B4 Secondary external temperature
U5 Discharge pressure B5 Heating circuit 2 temperature
U6 Outlet temperature from the
exchanger to the unit B6 Secondary probe
U7 Crankcase temperature DI1 Heater thermistor breakout sensor
U8 Water flow sensor Y1 Three way valve of heating circuit 2
U9 PWM control of circulation pump Y3 Pump speed regulation
of heating circuit 2
U10 Fan regulation NO1 Three-way valve NO DHW
NO1 Four way valve NO2 Three-way valve NC DHW
NO5 Crankcase heater NO3 DHW circulation pump
NO6 Tray heater NO4 CWU tank heater
NO5 Plant heater
NO6 Heating circuit 1 pump

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5. PROGRAMMABLE DISPLAY
5.1. Control
(No-flow): Volumetric flow value below which the
no-flow alarm will appear.
Hours: the operating time of the circulation pump
since the last reset of the application.
Next thr.: Time after which replacement/maintenance
of the component should be performer.
Reset h.: switch that resets the meter
Status: current control setpoint of the circulating
pump expressed in percentage
Manual: option to manually task the circulation pump
with a constant flow rate expressed in percentage
Min: the minimum setpoint temperature that can be set
Max: the maximum setpoint temperature that can be set
Ext. Temp OFF: Ambient temperature below which
the unit shuts down and does not start central heating
mode
HP Activ. delay: time for which the outside tempera-
ture must stay below “Ext. Temp. OFF” for the heat
pump to turn on
HP Deact. delay: time for which the outside tempera-
ture must remain above the “Ext. Temp. OFF” for the
heat pump to turn o
Alarm source: selection between whether the alarm
should work according to the Setpoint oset or Temp.
level
Setpoint oset: the dierence between the set
temperature and the measured temperature, above
which the cold water alarm will occur
Temp. level: water temperature, below which a cold
water alarm will occur
Startup: the time after the start of adjustment, during
which the fulfillment of the alarm condition does not
cause it to occur
Run: The time value for which the alarm condition
must be met to trigger an alarm
Regulation Type: Selection of the adjustment mode
(which probe is aected by SetPoint):
Plant Temp – buer probe
Inlet/Outlet Temp.- inlet/outlet probe
Run delay: Transition delay from adjustment start
mode to operation mode

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SERVICE MANUAL – HEAT PUMP
Start: selection of the probe to which SetPoint
applies during startup
Run delay: Transition delay from adjustment start
mode to operation mode
Run: selection of the probe to which SetPoint applies
during operation
Fixed Req: set control value for the circulation pump
expressed in percentage (if the control type is Fixed
Speed)
Min: minimum value of circulation pump control for
automatic control
Max: maximum value of circulation pump control for
automatic control
User Pump Start: operation mode of the circulation
pump
• ALWAYS ON – always on
• ON UNIT ON – when the heat pump is on
• ON REQUEST – when there is a requirement
for heating
User Req. Thrsh: threshold for starting the circulation
pump in ON REQUEST mode
Startup: The time after startup when the lack of flow
is not treated as an error
Running: time duration of absence of flow, which will
trigger the first alarm
Alarm stop: time duration of absence of flow after the
first alarm appears, which will turn o the circulation
pump
Regulation type: type of the circulation pump reg-
ulation:
• Delta Temperature – request to maintain a
constant dierence in supply and return tem-
peratures, additionally controlling the value of
the condensation temperature (when neces-
sary condensation control has priority)
• Fixed Speed – constant flow speed
• Evap/Cond Pressure – operation of the circu-
lating pump that maintains the set evapora-
tion/condensation temperature
Set: ambient temperature below which the circulating
pump will engage an emergency start at maximum
speed
Di.: temperature dierence by which the ambient
temperature must rise to deactivate the emergency
start mode of the circulation pump

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SERVICE MANUAL – HEAT PUMP
Set.compens.HP: selecting the option allows the
heating curve to be started in CH mode.
HP set compens.: four points are set, where X cor-
responds to the ambient temperature and Y to the
water temperature setpoint. The remaining points
are calculated by interpolation. The Y value does not
change below the first point and above the last point.
The Y4 value is equal to the SetPoint set in the main
screen.
User Pump 1 defrost req: preset constant flow rate
during defrost expressed in percentage.
User circuit mode: selection of use of Y1 and Y3
outputs
• 3WV2+3WV3 – two outputs for three-way
mixer valves controlled by 0-10V signal
• Pmp2+3WV2 – Y1 output controlled by 0-10V
signal, supporting mixer valve; Y3 output con-
trolled by PWM signal, supporting circulating
pump
Manual Mode: choice between automatic control
and manual setting of the mixer valve
Valve level/Manual set: in the case of automatic
mode, displays the current position of the valve, in
the case of manual setting - a field for entering the
set opening value
Circ. Temp: temperature measurement of the second
heating circuit
Set point: Set temperature value of the second
heating circuit
Kp: regulator gain
Ti: integration constant of the regulator
Td: dierentiation constant of the regulator
Compens.: four points are set, where X corresponds
to the ambient temperature and Y to the setpoint of
the feed water temperature of the second heating
circuit. The remaining points are calculated by inter-
polation. The Y value does not change below the first
point and above the last point.

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SERVICE MANUAL – HEAT PUMP
Manual Mode: choice between automatic control
and manual setting of the mixer valve
Valve level/Manual set: in the case of automatic
mode, displays the current position of the valve, in
the case of manual setting - a field for entering the
set opening value
Circ. Temp: temperature measurement of the third
heating circuit
Set point: set temperature value of the third heating
circuit
Kp: regulator gain
Ti: integration constant of the regulator
Td: dierentiation constant of the regulator
Compens.: four points are set, where X corresponds
to the ambient temperature and Y to the setpoint
of the feed water temperature of the third heating
circuit. The remaining points are calculated by inter-
polation. The Y value does not change below the first
point and above the last point.
Regulation type: type of control of the buer dis-
charge pump:
• Plant temp.: regulation depending on the
current temperature in the buer
• UnitON.: on whenever heat pump is on
• OFF.: always o
• Always ON: always on
Setpoint: temperature setpoint in the buer
Dierential: hysteresis
If the water temperature in the buer exceeds the
setpoint, then the pump will start and discharge the
buer. The process will continue until the tempera-
ture drops below the setpoint - hysteresis value.
Setpoint read: if you set the buer discharge tem-
perature setpoint in the Setpoint field greater than
the actual buer temperature setpoint, the discharge
setpoint will be set to a value 1 degree Celsius less
than the buer temperature setpoint.
Hours: the amount of time the circulating pump has
been running since the last reset of the application
Next thr: Time after which the component should be
replaced/maintained
Reset h.: switch to reset the counter
Status: current control value set for the circulating
pump expressed as a percentage
Manual: option to manually task the circulation pump
with a fixed flow value expressed in percentage

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Min: minimum value of the DHW set temperature that
can be set
Max: maximum value of the DHW set temperature
that can be set
Fixed Req: the set control value for the circulating
pump expressed as a percentage (if the control type
is Fixed Speed)
Min: minimum circulating pump control value for
automatic control
Max: maximum control value for circulating pump for
automatic control
Regulation type: selection of the operation mode of
the circulation pump in DHW mode:
• Fixed speed – constant flow speed
• Cond temp – speed depending on the con-
densation temperature
Alarm source: selection between whether the alarm
is to operate according to the Setpoint oset or
Temp. level rules.
Setpoint oset: the dierence between the setpoint
temperature and the measured temperature above
which the cold water alarm will occur
Temp. level: water temperature below which the cold
water alarm will occur
Startup: the time after the start of the control in which
the fulfillment of the alarm condition does not cause
the alarm to occur
Run: the time value for which the alarm condition
must be met to trigger the alarm
Enable Mode: operation mode of the circulation
pump:
OFF – turned o
Sched. ECO – ECO mode linked to the calendar
Sched. ON – operation mode linked to the calendar
ECO – ECO mode
Always ON – always on
Pump state: - signaling operation of the circulation
pump
ECO ON Time: time duration of operating in ECO
mode
ECO OFF TIME: time duration of standby in ECO
mode

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SERVICE MANUAL – HEAT PUMP
Heating: water temperature setpoint in CH mode
DHW: water temperature setpoint in DHW mode
Economy: the value that determines how many
degrees the heating curve in the Economy mode
should be raised/lowered, set in the Aa025 window
Comfort: the value that determines how many
degrees the heating curve is to be raised/lowered in
Comfort mode, set in Aa025 window
Boost: value by how many degrees the heating curve
is to be raised/lowered in Boost mode, set in Aa025
window
* modes set with the calendar
5.2. EEV
Manual: ability to manually set the opening degree
of the EEV valve
Position: manually set value of opening degree
Set: overheat setpoint in operation mode
Prop. gain: regulator gain
Integral: regulator integration time
Derivat: regulator dierentiation time
Set: overheating setpoint in transient mode
Prop. gain: regulator gain
Integral: regulator integration time
Derivat: regulator dierentiation time
Valve opening at startup: degree of opening of the
valve during startup

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SERVICE MANUAL – HEAT PUMP
5.3. Compressor
Request: compressor power demand in percent (%)
below which oil recovery mode can be activated
Speed: compressor speed below which oil recovery
mode can be activated
Delay: time for which conditions must be met for the
procedure to start
Duration: duration of the procedure
Force: compressor speed during the procedure
On cycles: compressor run counter
Hours: compressor run time since last application
reset
Next thr: Time after which the component should be
replaced/maintained
Reset h.: switch to reset the counter
Status: the current control value set for the compres-
sor expressed as a percentage
Manual: option to manually task the compressor with
a fixed speed value expressed in percentage
Startup: compressor speed during the first three
minutes after startup
Max: overall maximum permissible compressor
speed
Min: minimum permissible compressor speed
Actual max rps: maximum permissible compressor
speed for the current ambient temperature
Max rps level reg: Option to enable the compressor
speed control curve in CH mode. Five points are set,
where X corresponds to the ambient temperature
and Y to the maximum compressor speed at that
temperature. The remaining points are calculated by
interpolation. The Y value does not change below the
first point and above the last point.
Max rps level reg: Option to enable the compressor
speed control curve in DHW mode. Five points are
set, where X corresponds to the ambient tempera-
ture and Y to the maximum compressor speed at this
temperature. The remaining points are calculated by
interpolation. The Y value does not change below the
first point and above the last point.