Hoval CombiVal WPE User manual

United Kingdom
Hoval Ltd.
Northgate
Newark
Nottinghamshire NG24 1JN
Phone [phone]
Fax [phone]
Export
Hoval Aktiengesellschaft
Austrasse 70
LI-9490 Vaduz
Principality of Liechtenstein
Phone [phone]
Fax [phone]
Subject to modi cations | EN
Operating Instructions
CombiVal WPE (300), WPER (300) , WPEF (300)
Calorier/heat pump
4 215 949 / 00 - 02/18

1. Important addresses............................................................................................................................... 2
2. Safety instructions.................................................................................................................................. 3
3. Description.............................................................................................................................................. 4
4. Operation................................................................................................................................................. 5
4.1 User level (main menu)........................................................................................................................................................5
5. Description of the control functions ...................................................................................................... 9
5.1 Calorifier mode ....................................................................................................................................................................9
5.2 Defrost mode .......................................................................................................................................................................9
5.3 Protection against Legionella .............................................................................................................................................9
6. Alarm/fault display................................................................................................................................ 10
6.1 Types of error ....................................................................................................................................................................10
6.2 Overview of error messages .............................................................................................................................................10
7. Fault determination............................................................................................................................... 11
8. Operation/maintenance/service............................................................................................................ 13
8.1 Operation and maintenance..............................................................................................................................................13
8.2 General checks..................................................................................................................................................................13
8.3 Magnesium protection anode............................................................................................................................................13
8.4 Cleaning the air duct .........................................................................................................................................................13
8.5 Service ...............................................................................................................................................................................13
Heating installer
Tel. no.
Heating plumber
Tel. no.
Electrical installer
Tel. no.
1. Important addresses
24 215 949 / 00
INHALTSVERZEICHNIS

Dear Hoval customer,
In the Hoval calorier/heat pump, you have purchased
a product that is built to the highest quality standards
using state-of-the-art technology.
• Please check the items delivered, to ensure that they
match your order and that nothing is missing. Also check
for any damage incurred during transport and notify
your installer or the nearest Customer Service centre
if necessary. Claims made at a later date cannot be
accepted for insurance reasons.
• For the correct installation and operation of your heat
pump, all applicable laws, regulations and standards,
in particular the regulations set down by the relevant
electricity company, must be observed. In case of
queries, please contact your installer or the nearest
Hoval Customer Service centre.
• Before commissioning, the installation must be inspected,
and the system must be approved for use by the installer.
• To ensure safe, economical and trouble-free operation,
only operate your Hoval heat pump in accordance with
these operating instructions.
• The heat pump may only be used for the purposes
for which it was designed, and for which it has been
approved by Hoval.
• Do not make any modications to the unit, as this
will invalidate any legal claims. Conversion kits must
be installed and approved by the licensed installer or
Hoval Customer Service.
• In the event of a fault or damage, please contact
Hoval Customer Service to inquire about the necessary
repairs. It is essential to shut down the unit to prevent
damage.
With the purchase of a Hoval product you also obtain
a comprehensive warranty, in accordance with our terms
of sales and warranty.
With proper use, the ownership of your Hoval calorier/
heat pump will be a pleasure, and above all will provide
you with a reliable and economical source of hot water.
2. Safety instructions
Installation and service work on heat pumps can be
dangerous, on account of high pressures, live parts and
the location of the installation.
Heat pumps may only be installed, commissioned and
maintained by trained, qualied servicing staff.
When working on this unit, all safety instructions in the
relevant documents, on adhesive labels or plates on the
unit itself and all other safety precautions in force must
be observed.
Caution
Before carrying out maintenance and
service work, always unplug the unit from
the mains.
3
4 215 949 / 00
SAFETY INSTRUCTIONS

3. Description
The calorier/heat pump CombiVal WPE/WPER extracts
a large part of the energy for the hot water supply from the
ambient indoor air, which is available for free, for example
from the room in which it is situated.
With the aid of the integrated heat pump, energy is drawn
from the ambient air, thus heating the water. This saves
up to two thirds of the energy costs associated with the
hot water supply.
Large air outlet
with a diameter of 160 mm
Large air intake
with a diameter of 160 mm
Electric heating element
Double-enamelled calorifier
Magnesium protection anode
Thermal insulation
made from polyurethane
Condenser
on the outside of the steel
casing of the calorier prevents
limescale formation.
Fully hermetic piston
compressor
Easy microprocessor
control panel
with control knob, display,
operating and warning lights.
2-stage fan
Finned-tube evaporator
Hot water outlet
Enamelled
bare-tube heat exchanger
for integrating a solar thermal
collector or another heat generator
(CombiVal WPER only).
Cold water intake
Fig 01
44 215 949 / 00
DESCRIPTION

4. Operation
Control panel
12 3 4
1 Operating and fault indicator Heat pump
Green=on, orange=standby
Red=fault
2Operating and fault indicator
Additional heating (boiler or electric heating element)
Green=on, orange=standby
Red=fault
3Display
4Control switch
General note
The electronic controller has 2 program levels:
• Main menu (user level)
• Service menu (technician level)
During operation, the main menu is the standard display.
In the user level, the functions can be read off the display (3)
(at the top, with status or settings at the bottom). The display
is activated by turning or pressing the program switch (4)
(the display will light up).
Control switch
• Turning =
Select value, set values
• Pressing =
Change, conrm
1. Press and release: a ashing line/number will
appear = setting can be changed.
If the change is not "acknowledged" (press again
briey), it will not take effect.
2. Press and hold (> 3 sec) = switch to service menu.
4.1 User level (main menu)
Main menu
There are 12 options (information or
functions):
Display
1. Actual hot water temperature
Water
45 °C
Actual value display
2. Evaporator temperature
Evaporator
5 °C
Actual value display
3. Alarm/fault
Error
0 0 0
Alarm/fault code
0 = no fault
1-10 = see page 10
Acknowledge = press
next page
5
4 215 949 / 00
OPERATION

4. Operating status data
Status
H. water
Heat pump in hot water mode
Further information:
• Off
• DrawDown = HP is in standby mode
according to timer circuit
• Legionel = heating to 60°C in operation
• Le.Work = Legionella programme active
• Le.End = Legionella programme
successfully completed
Defrost mode:
• Defrost gas
• Defrost air
• Defrost off
• Defrost stop
5. Target hot water temperature
Target
HW Target
45 °C
Target hot water
temperature
The set hot water
temperature can be
changed as follows:
1. Press the switch
HW Target
45 °C
F L A S H I N G !
2. Turn the switch
until the desired hot
water temperature is
shown (e.g. 50 °C)
HW Target
50 °C
2. Press the switch =
acknowledge (the new
set temperature is now
in effect). The setting
should be between 45 °C
and 55 °C!
6. Min. hot water temperature
T min
35 °C
Target minimum temperature
This is set in the same way (see point 5,
hot water temperature). If the temperature
falls below this value, the additional heating
selected in the operating mode (point 8) will
be switched on.
7. Min. hot water temperature
T2 min
10 °C
Similar function to «T min».
Is used for the «shutdown function» and
«holiday function». The factory setting is
«10 °C»
8. Heat pump operating mode
H. pump
HP + EL
This is where the heat sources are selected:
• HP + EL
Heat pump and electric heating element
enabled
• Off
• HP = heat pump only
• EL = electric heating element only
• Boiler = boiler only
• HP + Boi. = heat pump and boiler
Only set the installed combination.
next page
64 215 949 / 00
OPERATION

9. Protection against Legionella
Legionel
On
• On = The hot water temperature is
increased to 60 °C every 14 days
• Off = no protection
10. Clock
Clock
• Factory setting 12:00
• The time can be set under (<<ClockSet>>).
To do this, rst set the current hour and
then the current number of minutes
11. Timer Off
Timer
Off
• The timer function enables timer-cont-
rolled hot-water production with a daily
time frame. To do this, rst set the time
under (<<Clock>>).
• For the starting point, rst select the hour
in (<<Start HP .. h>>) and then the minu-
tes in <<Start HP .. min>>.
• The end time is set in the same way in
(<<Stop HP>>).
• The legionella programme has priority
irrespective of the timer function.
• If the power is interrupted, the timer
function is stored by a battery for ap-
prox. 1-2 hours. If the power is interrup-
ted for a period of time longer than this,
the function must be reprogrammed.
12. Conguring separate fan
FanConf
1
Mode display
This function is intended for separate
ventilation with the fan when the heat
pump is in standby mode:
1 = Fan speed 1
(lower quantity of air)
2 = Fan speed 2
(greater quantity of air)
0 = No separate ventilation function for
the fan.
Fan only to be used when heat pump
in operation!
13. Fan mode (speed selection)
FanMode
2
Fan speed in operation
1 = Speed 1 = low speed/quantity of air
2 =
Speed 2 = higher speed/quantity of air
14. Photovoltaic yield
PV yield
OFF
If the system is connected to a solar power
plant which enables operation of the hot-
water heat pump (HWHP), the following
settings can be selected:
• «OFF» = the solar power plant is not
connected to the system or is deactivated.
• «HP» heat pump only, «EL» electric
heating element only, «HP+EL» = the
solar power plant enables the selected
mode when sufcient solar power is
available.
next page
7
4 215 949 / 00
OPERATION

15. Photovoltaic heat pump
PV HP
52 °C
• 5 °C – T max: Target temperature range
when PV function activated.
This parameter determines the target
HW temperature to be reached solely
by the HP when the PV function is
activated.
16. Photovoltaic and electrical additional
heating (electric heating element)
PV EL
53 °C
• 5 °C – T max: target temperature range
when PV function activated.
This parameter determines the target
HW temperature to be reached solely
by the electrical additional heating when
the PV function is activated.
17. Holiday absence function
Holiday
OFF
• «OFF»
«1 week»
«2 weeks»
«3 weeks»
«3 days»
«Manual» (see also point 18)
Deactivation/activation of the absence
function and of the min. HW temperature
«T2 min».
18. Days absent
DaysAbs
1
• 1-99
Individual specication of days absent
(if «Manual» was selected under point 17).
The HW temperature can be reduced as
low as «T2 min»
19. Remaining days absent
Days
0
• 0-99
Display of the remaining days absent.
20. Boost function
Boost
OFF
• «OFF»
«ON»
Is activated to cover a short-term increased
need for HW. The BOOST function uses
maximum power «HP+EL» until «T max» is
reached, or for a maximum of 1 hour.
21. Fan
FanPause
OFF
• «OFF»
«15»
«30»
When activated, the fan will be paused for
15 or 30 seconds per hour of operation.
84 215 949 / 00
OPERATION

5. Description of the control functions
5.1 Calorifier mode
Heating up of the calorier is carried out by the heat pump,
electric heating element and boiler, jointly or individually,
depending on the settings. The function of the calorier
mode is controlled via the user program:
Heat pump: operating mode H. water. Temperature control:
via sensor value (Tmax=setpoint and Tmin). The heat
pump is switched on if the temperature falls below the set
target and switched off when the target is reached. If the
heat pump is switched off, the HW target temperature is
achieved using the selected additional heating (hysteresis:
HP +1/-3 K; additional heating +/-1 K).
The heat pump is switched off automatically when the
temperature falls below the evaporation temperature
of -18 °C. The operating status is displayed on the
control panel.
(See page 5: display 3)
5.2 Defrost mode
Defrost mode (hot gas bypass) activates automatically
when required. Defrosting using the defrost valve is
initiated (fan off) when the temperature at the evaporator
is < -2 °C.
Defrosting ends when the temperature at the defrost
sensor reaches a value of +5 °C. If this value is not
reached within 20 minutes, defrosting is stopped and
normal operation resumes. The defrost interval lasts
2 hours.
5.3 Protection against Legionella
If, as a general rule, little water is required (extended
dwell time of the water in the calorier), activation of the
protection against Legionella function is recommended.
When the function is activated (see user program),
the water is periodically heated to 60 °C.
9
4 215 949 / 00
DESCRIPTION OF THE CONTROL FUNCTIONS

6. Alarm/fault display
6.1 Types of error
There are 3 types of message (see below). Three different
messages can be shown on the display at the same time.
Press the setting knob on the control panel once to
acknowledge and reset the message.
• The information message does not affect the function
of the calorier/heat pump; however, it noties the
user of a problem that should be remedied as soon as
possible (message 8, 9 and 10).
• In the event of refrigerant circuit error messages,
the supply of hot water by the heat pump is interrupted.
If the electrical additional heating is activated, this takes
over the hot water supply until the target hot water
temperature is reached (error message 3, 4, 5 and 6).
• In the event of error messages for the overall system,
the hot water supply is stopped completely. These
messages are most likely due to a sensor error (error
message 1 and 2).
The user can view the error messages in the display.
The error messages are acknowledged by pressing the
setting knob. Before the calorier/heat pump returns
to normal operation, the error must be rectied and
acknowledged. If the error is not rectied, the error
message will remain on the display. If several error
messages occur at the same time, these will be shown
in the second line of the display, listed in order of priority.
The pressure switch error messages 5 & 6 are dealt with
as follows.
Error message 5 (pressure switch error message appearing
for the rst time): the heat pump is switched off. The heat
pump starts up again if the pressure normalises of its
own accord. In the case of error message 5, the indicator
LED (1) ashes red. As soon as the error is rectied
(or has resolved itself), the indicator LED automatically
changes to orange (ashing). After the error message
has been acknowledged, the indicator LED then indicates
the operating or standby mode of the calorier/heat pump
(= indicator LED permanently green or orange).
If the same error occurs again within 6 hours of the rst
error message, error message 6 is displayed. The heat
pump is switched off. The HP can only start up again
after the error has been rectied and the error message
has been acknowledged. In the case of error message 6,
the indicator LED (1) ashes red. As soon as the error
is rectied, and once the error message has been
acknowledged by pressing the setting knob, the calorier/
heat pump then changes to the operating or standby
mode (= indicator LED permanently green or orange).
Indicator LED: error messages
The indicator LED (1) of the heat pump is ashing red:
Error message for the refrigerant circuit or information
message. Both indicator LEDs (1 + 2) ashing: storage
tank sensor faulty, it is not possible to heat up the water.
1. Operating and fault indicator,
heat pump.
Flashing red = fault in alarm
group 2 or 3
2. Operating and fault indicator,
additional heating (boiler or
electric heating element).
Both indicators (1 + 2) ashing red =
fault in alarm group 1
3. Display
Alarm
9 0 0
Acknowledge =
press switch
Control panel
1 2 3 4
6.2 Overview of error messages
Error
number
Indicator LED Cause of error Effect
No. 1 No. 2
1 ashing (red) ashing (red) Short circuit on temperature sensor
in upper region of storage tank
Heat pump and additional heating
switched off.
2ashing (red) ashing (red) Temperature sensor in upper region
of storage tank disconnected.
Heat pump and additional heating
switched off.
3ashing (red) Short circuit on temperature sensor
on the evaporator.
Compressor is switched off.
10 4 215 949 / 00
ALARM/FAULT DISPLAY

Error
number
Indicator LED Cause of error Effect
No. 1 No. 2
4ashing (red) Temperature sensor on evaporator
disconnected.
Compressor is switched off.
5 ashing (red) First pressure switch error message Compressor is switched off and
restarts automatically once the
error is rectied. Acknowledge
the error message to dismiss it.
6 ashing (red)
Second pressure switch error message Compressor is switched off and
will restart only after the error has
been rectied and acknowledged
and the calorier/heat pump has
been reset.
9 – – –
10 ashing (red) The target temperature for the
protection against Legionella function
has not been reached.
Information
7. Fault determination
You can minimise the risk of a fault occurring by signing
up to a maintenance contract. Should something goes
wrong despite this, go through the fault checklist below.
Make sure that you have complied with the instructions in
the manual.
If you are unable to rectify the fault with the aid of the
checklist, please contact Hoval Customer Service.
Type CombiVal WPE, WPER
Fault Cause Remedy
Alarm message in display See error display • See error display
Electrical fault
No display
• No power to the plug
• Main switch turned off
• Replace fuse
• Turn on the main switch
Electrical heating does not heat
despite being switched on
• Overheating
• Electrical connection faulty
• Reset safety thermostat
• Replace
Electrical heating does not heat
although the function is switched on
• Electrical connection faulty
• Pump faulty
• Pump blocked
• Replace
• Replace
}
Inspection by heating
engineer
• Boiler not in standby position • Check standby position, prepare
Fault no. 5 or 6 • High-pressure fault • Clean
11
4 215 949 / 00
FAULT DETERMINATION

Type CombiVal WPE, WPER
Fault Cause Remedy
Discharge of condensate during
operation
• Condensate drain blocked • Clean
Odour • No drain trap tted
• No water in drain trap
• Install drain trap
• Top up water
12 4 215 949 / 00
ALARM/FAULT DISPLAY

8.4 Cleaning the air duct
• Take care to ensure that the air inlet and exhaust
openings are freely accessible and not blocked by
objects or dirt.
• Likewise check protective grilles to ensure they are clean.
This also applies to any exhaust ducts that are present.
• The inlet and exhaust air grilles and the evaporator
must be checked for dirt regularly, and cleaned when
necessary (see image below). The top cover can be
removed to clean the evaporator.
Caution:
Unplug the power cord before opening
Evaporator
Refrigerant circuit:
Work on the internal circuit of the heat
pump (compressor, condenser, evaporator,
expansion valve etc. and including the
circuit pipework) may only be carried out
by authorised persons.
8.5 Service
Important:
Unplug the power cord before carrying
out any work on the unit!
Shut-down
The heat pump can be shut down by switching off the
calorier/heat pump at the control panel (see Operation).
8. Operation/maintenance/service
8.1 Operation and maintenance
To ensure problem-free operation, a yearly check should
be carried out.
8.2 General checks
To detect possible irregularities in its operation, the heat
pump should be visually inspected at regular intervals.
• Keep the unit casing and the area around the unit clean.
• Wipe the installation regularly with a damp cloth to
remove dust and contamination. In this way, leakage
points are identied sooner and can be repaired.
• From time to time, check that all connections are secure.
• From time to time, check that the operating voltage and
phase unbalance are still within the specied limits.
• Performance checks
The temperature difference between the air intake
and the air outlet should be approx. 5-7 K. Larger
temperature differences indicate reduced air ow rate
(check supply and exhaust ducts); a difference below
4 K indicates that the heat pump is not functioning
correctly (notify customer service).
Important
The hot water storage tank is coated with a double layer
of enamel on the inside.
The tank coating is designed for normal drinking water
quality. If the aggressiveness of the drinking water used
is above average, no guarantee can be given unless
special protective measures are taken.
8.3 Magnesium protection anode
The magnesium protection anode must
be checked 2 years after commissioning
at the latest.
The subsequent control intervals are then
set depending on the condition of the
anode at the rst check.
In areas with a high chalk content (over 16°dH or 28°f
respectively), a check should be made after 2-3 years.
Ask your heating engineer or Hoval Customer Service.
13
4 215 949 / 00
OPERATION/MAINTENANCE/SERVICE

United Kingdom
Hoval Ltd.
Northgate
Newark
Nottinghamshire NG24 1JN
Phone [phone]
Fax [phone]
www.hoval.co.uk
Principality of Liechtenstein
Hoval Aktiengesellschaft
Austrasse 70
LI-9490 Vaduz
Phone [phone]
Fax [phone]
www.hoval.com
Switzerland
Hoval AG
General Wille-Strasse 201
CH-8706 Feldmeilen
Phone [phone]
Fax [phone]
www.hoval.ch
Germany
Hoval GmbH
Humboldtstrasse 30
DE-85609 Aschheim-Dornach
Phone [phone]
Fax [phone]
www.hoval.de
Austria
Hoval Gesellschaft mbH
Hovalstrasse 11
AT-4614 Marchtrenk
Phone [phone] - 0
Fax [phone] - 5005
www.hoval.at
Italy
Hoval s.r.l.
Via XXV Aprile 1945, 13/15
IT-24050 Zanica (BG)
Phone [phone]
Fax [phone]
www.hoval.it
France
Hoval SAS
Parc d’Activité de la Porte Sud
Bâtiment C - Rue du Pont au Péage
FR-67118 Geispolsheim
Phone [phone]
Fax [phone]
www.hoval.fr
Responsibility for energy and environment