Dimplex LA 16 MI User manual

LA 6 MI
LA 9 MI
LA 12 MI
LA 16 MI
Installation Instructions
For LA MI inverter air-to-water
heat pump systems packages
8/60379/0

Page 2
Supporting documents
The following documents are available to aid in the planning, installation, operation and maintenance of the Air-eau heat
pumps:
Technical manuals
Contains the necessary information required during the planning stages.
Air-eau inverter heat pumps packages
SmartRad
Installation instructions
Contains the necessary information required during the installation.
Air-eau inverter heat pump packages (this document)
EC-eau cylinders
SmartRad
User guides
Contains the necessary information for the user for operation and maintenance of the system
Air-eau heat pumps (Pack 1 and 2 –standard heating and DHW) for standard users
Air-eau heat pumps (Pack 1 and 2 –standard heating and DHW) for sheltered housing
The installation of an Air-eau heat pump should only be carried out by a suitably trained and
competent person who is approved by Dimplex. All installations should be in accordance
with this document and the planning manual to ensure efficient operation.
The installation instructions are intended for use by the installer whilst they are on site.
Further clarification can be obtained from the relevant technical manuals.

Page 3
Contents
Supporting documents ......................................................................................................................................................... 2
Section 1: Scope of delivery and handling ................................................................................................................................ 5
Table 1: Items supplied with the LA MI................................................................................................................................. 5
Product handling .................................................................................................................................................................. 5
Section 2: Pre-installation checks ............................................................................................................................................. 6
Intended Use ........................................................................................................................................................................ 6
Section 3: Installation considerations........................................................................................................................................ 7
Installation location............................................................................................................................................................... 7
Fixing of the heat pump........................................................................................................................................................ 7
Minimum Ventilation clearances........................................................................................................................................... 8
Minimum maintenance clearances ....................................................................................................................................... 8
Wall mounting....................................................................................................................................................................... 8
Section 4: Heating System Connection .................................................................................................................................... 9
External pipe work................................................................................................................................................................ 9
Minimum heating water flow rate.......................................................................................................................................... 9
Taconova flow checker......................................................................................................................................................... 9
Frost protection .................................................................................................................................................................. 10
Condensate ........................................................................................................................................................................ 10
Flushing the system ........................................................................................................................................................... 10
Filter ................................................................................................................................................................................... 10
Filling the system................................................................................................................................................................ 11
De-aeration......................................................................................................................................................................... 11
Expansion vessel sizing ..................................................................................................................................................... 11
2 port valves ....................................................................................................................................................................... 11
Controlling DHW temperature ............................................................................................................................................ 12
Section 5: Electrical Connection ............................................................................................................................................. 13
Routing of cables within the heat pump.............................................................................................................................. 13
Ducting cables.................................................................................................................................................................... 13
Connection of the power supply to the Heat pump............................................................................................................. 14
Main power supply cable .................................................................................................................................................... 14
Inline flow boiler.................................................................................................................................................................. 16
Domestic hot water immersion ........................................................................................................................................... 16
Controller cable .................................................................................................................................................................. 17
Electrical connections with the system ............................................................................................................................... 17
Section 6: Installation of the controller .................................................................................................................................... 19
Mounting the controller ....................................................................................................................................................... 19
Section 7: Programming of the controller................................................................................................................................ 20
Timer/Clock Setting Display ............................................................................................................................................... 21
Operation Mode Button ...................................................................................................................................................... 21
Inline flow boiler ( Enable / Disable ) .................................................................................................................................. 21
System Check Button ......................................................................................................................................................... 21

Page 4
Setting the Advanced settings ............................................................................................................................................ 22
Setting the Advanced settings (continued) ......................................................................................................................... 23
Setting the Advanced settings ............................................................................................................................................ 24
Weekly timer setting ........................................................................................................................................................... 25
Enable / Disable timer ........................................................................................................................................................ 25
Setting the timer ................................................................................................................................................................. 25
Section 8: Setting the system to work..................................................................................................................................... 26
Hydraulic circuit .................................................................................................................................................................. 26
Heat pump.......................................................................................................................................................................... 26
Section 9: Technical specification of the LA MI range ............................................................................................................ 27
Performance Data .............................................................................................................................................................. 28
Performance Data .............................................................................................................................................................. 29
Product Dimensions LA 6 MI and LA 9 MI.......................................................................................................................... 30
Product Dimensions LA 12 MI and LA 16 MI...................................................................................................................... 31
Section 10: Annual System Health checks ............................................................................................................................. 32
Heat pump.......................................................................................................................................................................... 32
Electrical............................................................................................................................................................................. 32
Hydraulic ............................................................................................................................................................................ 32
Cylinder .............................................................................................................................................................................. 32
Wall mounted thermostat.................................................................................................................................................... 32
Heat pump controller .......................................................................................................................................................... 32
Section 11: Trouble shooting for the installer.......................................................................................................................... 33
Section 12: Error codes .......................................................................................................................................................... 34
Section 13: Standard packages .............................................................................................................................................. 37
Package 1 and 2 ................................................................................................................................................................ 37
Suggested additional components ..................................................................................................................................... 38
Package 1 and 2 –Plumbing Schematic ............................................................................................................................ 39
User‟s guide to an Air-eau heat pump system .......................................................................................................................... 1

Section 1: Scope of delivery and handling
Description
Qty
Protective grommet to
prevent damage to
cables (LA 12 / 16 MI
only)
2 + 3
Remote controller for
internal wall mounting
1
Remote controller
cable 15m long
1
Screw (M4 self tapping
- 14mm) for wall
attachment of remote
controller
3
Cable ties
3
Table 1: Items supplied with the LA MI
Product handling
Figure 1: Moving a heat pump with a pallet truck or similar
The heat pump is large and heavy. The
handling of the unit should only be done
using lifting tools and sling which can be
fitted into sleeves at the unit‟s base.
Use a wooden pallet for transporting the
heat pump to the final installation
location.
Note that the two metal rails that hold
the heat pump together are essential for
the structural stability and should not be
removed. Removing these rails would
invalidate the warranty.
When transporting the heat pump,
ensure that it is not tilted more than 45°
(in any direction). Tilting the heat pump
would cause the oil from the compressor
to cause damage to other components
within the refrigerant circuit.

Page 6
Section 2: Pre-installation checks
Intended Use
This device is only intended for use as specified by
Dimplex as detailed within this technical manual. The air-
to-water heat pump is to be used exclusively for the
heating of heating water in a closed circuit. Any other use
beyond that intended by the manufacturer is prohibited.
Persons, especially children, who are not capable of
operating the device safely due to their physical, sensory
or mental abilities or due to their inexperience or lack of
knowledge, must not operate this device without
supervision or instruction by the person in charge.
Before starting the practical work the installer must ensure
that the following information has been confirmed during
the design stage.
The heat pump has been correctly sized to meet
the heat load.
The heat emitters system has been suitably sized
ensuring a low flow temperature design.
Any requirements under the MCS scheme (if
applicable) have been met.
The cylinder has been correctly selected to
match the Domestic hot water demand and also
match the heat pump.
The method of communicating a heating demand
to the heat pump as been confirmed i.e. wall
thermostat
Correct selection of the heat pump, heat
emitters and circulation system is essential for
efficient operation of the entire system.
For information about efficient design and
operation see the Inverter heat pump planning
manual.

Page 7
Section 3: Installation considerations
Installation location
The heat pump is for outdoor installation only. The
following should be verified. Further information is
available in the planning manual.
Planning permission has been applied for where
necessary.
There is adequate clearance for efficient
performance as shown in Figure 3 and the
discharged air does not recirculate.
The unit is positioned to minimise the effects of
noise upon the properties occupants and its
neighbours.
The condensate can easily be drained away.
Hydraulic connections can easily be made to the
heating system and the DHW cylinder.
There is no risk of a flammable gas leak or any
outlets vents from any other system.
The wiring lengths come within reasonable
ranges particularly taking note of the 15m
controller cable.
The heat pump is adequately fixed to prevent
tipping.
Fixing of the heat pump
The heat pump should be fixed on two flat, horizontal and
solid hard surfaces such as concrete pads that are
capable of taking the unit‟s weight and draining the
condensate. The fixing should be strong enough to
prevent the unit from tipping over if the base becomes
unlevel over time.
Suggested dimensions
of concrete pads
A
152
B
980
C
300
D
356
E
400
F
520
G
400
H
600
Figure 2: Top view of two concrete mounting blocks that allow the condensate to drain away via a gravel soak away.
The installation of an air source heat pump
should be carried out by a Dimplex Accredited
installer.

Page 8
Minimum Ventilation clearances
For adequate air flow the distances shown in Figure 3
must be observed. The free field indicates that no object
will disrupt the air flow out of the unit.
Figure 3: Minimum distances to objects to ensure adequate
ventilation
Minimum maintenance clearances
It must be possible to carry out maintenance work without
hindrance. The clearances displayed Figure 4 should be
observed. For example if the unit is installed on a balcony
there must be a space measuring 1000mm in front of the
unit of maintenance.
Figure 4: Minimum clearances for maintenance (not
including clearance for air circulation)
Wall mounting
If the heat pump is to be wall mounted a condensate
collection tray (supplied by the installer) should be fixed
under the heat pump. The pipe from the tray to a suitable
drain should be heated so that it can‟t freeze and become
blocked.

Page 9
Section 4: Heating System Connection
The following should be verified before connecting to the
heating system. Further information is available in the
planning manual.
The 50L minimum water volume of the system is
observed by the installation of a buffer tank.
A dirt filter is installer on the return pipe to the
heat pump.
The pipe sizes are adequate to allow the correct
minimum water flow rate through the heat pump.
A by-pass valve has been designed into the
circuit to ensure there is always flow though the
heat pump even when the heating circuits are
closed.
Air bleed valves have been installed at every
highpoint in the pipe work.
External pipe work
The pipe work running from the heat pump into the
property should be sufficiently insulated to minimise the
heat loss and consideration should be given to using the
correct material so that it does not corrode.
Minimum heating water flow rate
The minimum water flow rate which is stated in the
„performance data table‟ must be observed. The
following factors should be considered:
Hydraulic resistance of the pipe work. Special
attention should to given to ensure the correct
pipe diameter is chosen considering the
required flow rates.
As a rule of thumb 28mm pipe work should be
used although the sizing of the pipe work
remains the responsibility of the installer.
To minimise energy consumption the pump
should run of the lowest speed possible whilst
still achieving the correct flow rate. The
resistance of all the pipe fittings, filter, heat
emitters and condenser must be taken into
account.
Failure to observe the minimum water throughput will
cause the heat pump not to work due to operation of the
flow switch alarm (H62).
The maximum water throughput is 20% more than the
stated minimum water throughput. Exceeding the
maximum flow rate would result in an inefficient system
operation due to increased pumping losses.
For systems in which the heating water flow can be shut
off via actuators or thermostatic valves an overflow
bypass valve must be installed to guaranteed to minimum
water flow rate.
Taconova flow checker
The Taconova flow checker is provided in every system
package to provide a simple way to verifying that the flow
rate is correct. The flow rate is read on the bottom of the
spinner as shown in
Figure 5: Correct reading of flow rate on the taconova flow
checker
The flow checker should be installed in a visible location
inside the property and as close to the heat pump flow as
possible. In order given an accurate reading the pipe
installation distances shown in Figure 6 should be
observed as well as the flow direction as shown in Figure
7.
It is important to install the flow checker on the flow pipe
so it is protected from impurities within in the system via
the filter on the heat pump return.
When connecting the heating system,
all applicable regulations must also be
adhered to including all relevant
European and national regulations and
local building regulation codes.
Work that requires the covers to be
removed must only be carried out under
supervision of qualified contractor,
installation engineer or service person.
The installation of an air source heat
pump must be carried out by a Dimplex
Qualified installer.

Page 10
Figure 6: Minimum straight pipe distance before entrace to
Taconova unit
Figure 7: Ensure the flow rate through the Taconova is in
the same direction as the arrow
Frost protection
So long as the heat pump is connected to the mains
electrical supply the automatic antifreeze function will
prevent the water in the pipes freezing during cold
weather.
In case of a prolonged power supply failure or a
circulation pump failure the system must be drained using
the screws on the flow and return connections. When
water is idle inside the system, freezing up is very likely
to happen which could damage the system beyond
economic repair.
The installer should conduct a risk assessment to
determine the likelihood of water freezing in the heat
pump and interconnecting pipe work in the event of a
power failure during cold weather. The heating circuit
should be dosed with suitable antifreeze if heat pump
system is in a building where a power failure cannot be
detected or the occupants would be unable to drain the
system. If antifreeze is used the concentration should be
large enough to prevent freezing for the coldest local
temperature and the installer should ensure the glycol is
vented to a suitable place to prevent contamination of the
environment or sewage system in the event the pressure
relief valve activating.
Condensate
During normal operation the heat pump will remove water
vapour from the air. The condensate will run down the
evaporator into the condensate tray where it will drain out
of the unit. Defrosting takes place up to 16 times per day,
with up to 3 litres of condensed water being produced
each time.
Condensed water that forms during operation must be
drained off frost-free. The heat pump must be mounted
on a level surface to guarantee proper drainage. The
condensate should drain onto a surface such as gravel.
If the condensate is drained into a pipe, it must have a
minimum diameter of 50mm and should be fed into the
drain for rain water to ensure that large quantities of
water can be drained off.
Flushing the system
It is advisable to fit specific connections for flushing and
filling as shown in the plumbing schematics. Before
connecting the heating water system to the heat pump,
the heating system must be flushed to remove any
impurities and residue from sealants, etc. Any
accumulation of deposits in the condenser could reduce
the heat pumps performance. Do not use worn out piping
that may have become blocked over time.
Filter
It is essential to install a filter immediately before the
water inlet to the heat pump. Not installing this filter would
invalidate the warranty of the heat pump as debris can
easily block the condenser channels.
The MFK114 isolation valve as shown in Figure 8 is
included in the heat pump packages. The valve can be
closed and the filter removed and checked without having
to drain the system.
Ensure that impurities are not flushed
though the heat pump since they could
block the channels in the condenser.
The condensate must drain on to an
surface that is freely draining. It must
not drain on to footpaths or patios as it
could refreeze and become a hazard.
If the heat pump is taken out of service
or in the event of a power failure, the
system has to be drained if freezing
weather is a possibility.

Page 11
Figure 8: Isolation valve and filter supplied in LA MI
packages to be fitted to the heat pump return.
Figure 9: Isolation valve supplied in package to be fitted to
the heat pump flow.
Filling the system
The system should be filled with potable water. The
system water should be treated with standard central
heating inhibitors.
The cold fill gauge pressure on the heat pump should be
between 0.8 and 1.5 bar (0.08-0.15MPa). This will rise
during normal operation.
De-aeration
Air trapped in the system causes air locks which in turn
cause poor water flow around the system. Every high
point in the system should have a means of bleeding out
air which is supplied by the installer.
The pressure relief valve shown in Figure 11 can be used
to purge the air from the heat pump during filling.
Figure 10: Location of pressure relief valve
Figure 11: Pressure relief valve
Expansion vessel sizing
The heat pump comes with an expansion vessel already
installed as shown in the „Performance data table‟.
For most installations the 10L expansion vessel should
be able suitable with a volume up to 150L and a static
height of 7m. The 6L expansion vessel should be suitable
for a system volume up to 90L and a static height of 7m.
2 port valves
The heat pump packages include 2 x F228 Horstmann
two port valves as shown in Figure 12 to switch between
space heating and domestic hot water mode. Fit the
valves ensuring that the actuator head is not below the
horizontal level of the pipe work and that the flow is in the
direction of the arrow. Remember to make allowances for
maintenance and replacement.
Figure 12: Dimensions of F228 valve
The F228 valves have been specifically
selected for their fast operating times. When
switching from heating to DHW the heat
pump flow must not be restricted. If a
different valve is used, the valve must be
fully open within 6 seconds of being
switched.
Depending upon the specific system the
installer must determine if a second
expansion vessel is required.

Page 12
Controlling DHW temperature
The cylinder temperature is controlled via an NTC2
sensor.
For safety reasons the heat pump controller also checks
for continuity from the DHW thermostat. The temperature
regulation thermostat and high limit stat are wired in
series. To keep the contacts closed on the regulation stat
the dial must be set to maximum. The contacts on the
high limit stat will remain closed during normal operation.
If the heat pump does not detect continuity across both
the regulation stat and high limit stat an H91 error will
occur.
A label similar to that shown in Figure 13 should be
supplied by the installer and fixed on the cylinder to let
the user know.
Figure 13: Notice to be supplied by the installer and fixed
next to cylinder thermostat
TEMPERTURE ADJUSTMENT
The temperature of the hot water in this
cylinder is set using the wall mounted heat
pump controller. The setting shown on this
thermostat does not affect the hot water
temperature.
For normal operation the dial should be
set to the maximum position.
The thermostat on the cylinder should
not be modified to disable the regulation
stat or high limit stat.

Page 13
Section 5: Electrical Connection
Routing of cables within the heat pump
To avoid electrical cables becoming damaged
by sharp edges they must exit through the
grommets located on the bottom edge of the
machine.
The cables must be secured using the
supplied cable ties and the clamps on the
control board.
Ducting cables
To access the electrical connections only the front right
hand panel of the heat pump outer casing needs to be
removed as shown in Figure 14.
Depending upon the installation the heat pump could
have the following cables that it will be necessary to
route from the heat pump into the property.
1. Main power supply cable
2. Heat pump controller
3. Communication cable for 2 way valves, high
limit stat etc, room thermostat.
4. Domestic hot water sensor
5. Domestic hot water immersion heater (booster
heater)
Ducting should be used to ensure that the enclosed
cables are protected from the effects of weather,
mechanical snagging or wear, rodent damage ect. The
ducting should be positioned in such away to ensure
that water will not track along the ducting and into the
heat pump or property.
Figure 14: Correct cable routes through heat pump
For typical wiring and hydraulic
schematics see section 16 at the end of
this document.
When connecting the heat pump to
the power supply, the relevant EN
standards must be complied with.
Any further connection requirements
stipulated by local utility companies
must also be observed. It is important
that the hydraulic connections have
been completed prior to switching on
the power supply.

Page 14
Connection of the power supply to the Heat pump
LA 6 and 9 MI LA 12 and 16 MI
Figure 15: Connection of the power supply cable
Main power supply cable
The power connection of the heat pump is made via a
standard 3-core cable. The cable has to be supplied by the
installer and the wire cross-section is to be selected
according to the power consumption of the heat pump as
shown in
Similarly, the main circuit breaker (MCB) at the distribution
board should be correctly rated as shown in Table 2.
For maintenance purposes the power supply of the heat
pump must be equipped with an isolating device in the
vicinity of the heat pump. The isolating device must have a
contact gap of at least 3mm. In addition to the maintenance
isolator an automatic 2-pole automatic circuit breaker
should be installed.
The maximum current carried in the supply cable
must be calculated using Table 2 depending upon
the how the heat pump is configured. For example,
it is not always necessary to connect the inline flow
boiler. In other installations where there is no DHW
cylinder is not necessary to connection the DHW
immersion. Every installation will require power to
RCCD 1 (compressor and control circuits).
Once the maximum supply current is known the
installer must then supply a suitably rated cable
depending upon the run length and the type of
environment where it will pass.
The heat pump should only be
connected to a permanent mains supply.

Page 15
RCCD 1
RCCD 2
MCB
Compressor &
controller
In line flow boiler
+
DHW immersion switched
by heat pump
In line flow boiler
+
DHW immersion switched
by a relay controlled by the
heat pump or no DHW
immersion installed
Total running
current
(Amps)
Suggested
„type C‟
MCB
rating
LA 6 MI
21A
26A
13A


47
50


34
50
LA 9 MI
23A
26A
13A


49
50


36
50
RCCD 1
RCCD 2
RCCD 3
MCB
Compressor
& controller
In line flow
boiler
DHW immersion
switched by
heat pump
DHW immersion switched
by a relay controlled by
the heat pump or no DHW
immersion installed
Total running
current
(Amps)
Suggested
„type C‟ MCB
rating
LA 12
MI
25A
26A
13A
0A



51
63



64
80
LA 16
MI
27A
26A
13A



53
63



66
80
Table 2: Calculation of running current for entire heat pump to size power supply cable and MCB at distribution board.

Page 16
Inline flow boiler
Figure 16: Manual reset on the over Inline flow boiler
The OLP located on the inline flow boiler, as shown in
Figure 16 prevents the water from overheating. Before
manually resetting the cause of tripping should be
rectified. The OLP can be manually reset by:
1. Removing the OLP Cover.
2. Using an insulated tool to gently push the centre
button on the OLP.
3. Replace the OLP cover.
Domestic hot water immersion
The heat pump is capable of switching a 3kW
immersion directly without the need for an additional
relay as shown on the standard wiring diagram.
Depending upon the wiring runs it may be more
suitable that the heat pump switches a relay rather
than the immersion directly as shown in Figure 17.
This would mean that the cable from the heat pump to
the cylinder could have a lower current rating and
therefore, could be combined with the multi-core cable
rather than run a separate cable.
This method is particularly useful in retro-fit
applications where the existing cylinder already had an
immersion heater and high current supply fitted.
If this is the case the installer should supply an inline
fuse rated at an appropriate current for the relay
selected and the maximum current rating of the multi-
core cable as shown in Figure 17.
Figure 17: Wiring for Heat pump to control DPCO relay to switch supply for immersion
If the inline flow boiler is not wired in the
frost protection function will not fully
function. The circulation pump will run
but no additional heat will be added to
the system by the inline flow boiler. This
increases the risk of the water in the
system freezing.

Page 17
Controller cable
The controller cable is connected to the heat pump
controller using the two rectangular plug connectors as
shown in Figure 18. The cable cannot be extended
because this would increase the resistance and
correct operation of the controller cannot be
guaranteed. The cable is 15m long but 1.5m is
required inside the heat pump leaving 13.5m for
routing to the controller. The cable is included within
the scope of supply. The power for the controller is
supplied from the heat pump.
Figure 18: Connection terminals on the controller cable
to controller inside the property.
The controller cable is connected to the heat pump via
a short extension lead which protrudes from the heat
pump as shown in Figure 19. On the end of the
extension cable is a dust cover that must be removed
before the cable can be connected. The controller
cable connects to the extension cable as shown in
Figure 20.
Figure 19: Location of the extension cable for connection
of the 15m controller cable
Figure 20: Terminals of the extension lead and 15m
controller cable
Electrical connections with the system
The following section contains general information
about the communication connections. Full wiring
diagrams and hydraulics for standard systems are
available in Section 16.
Each end of the controller cable is
different. Make sure you install it the
right way around!

Page 18
Figure 21: Heat pump communication connections
External controller cable
This can be used to remotely put the heat pump in standby mode upon breaking
the connection from an external control device. When in standby the heat pump
frost protection will still be activated. To enable this function a factory fitted jump
lead between terminals 17 and 18 must be removed.
2 x Two way valves
2 x two-way valves are necessary if the heat pump needs to switch mode from
space heating to domestic hot water production.
Booster (Immersion)
heater
This is the immersion heater installed in the DHW cylinder. It immersion can
either be switched directly by the heat pump or a relay can be fitted locally to the
cylinder as shown in Figure 17.
Receiver Cable
The receiver cable is used to communicate a heating demand to the heat pump
from a device such as a wall mounted thermostat.
Connection of the receiver cable is essential to provide „boiler interlock‟ to
comply with building regulations.
Tank OLP
If the heat pump is doing DHW, the over load protection is connected to the
manually resettable high limit stat on the DHW cylinder. Using this connection is
a way of comply with G3 building regulations.
If such connection is deemed unnecessary a jumper must be connected across
these terminals if the heat pump is programmed for DHW production.
Tank Sensor
The tank sensor is essential for DHW production because it monitors the
temperature in the DHW cylinder. The DHW sensor must be an NTC-2. This
sensor is supplied as part of the standard package.
To comply with wiring regulations it might be necessary for the sensor cable to
be different cable from the other communication cables since it is extra low
voltage and the other cables carrying 240V.

Page 19
Section 6: Installation of the controller
The controller should be installed:
In a place which is away from direct sunlight
and high humidity.
On a flat surface to prevent warping of the
remote controller and damage to the LCD
screen.
Where the LCD can be easily seen for
operation. (Standard height from the floor is
1.2 to 1.5 meters.)
In a location where the cable can be fed
though the wall or to the surface of the wall
and attached in such a way as not to cause
snagging.
Mounting the controller
1. Remove the remote controller‟s base by inserting a
flat-tipped screw driver 2 to 3 mm into one of the gaps
at the bottom of the case, and twist to open as shown in
Figure 22.
2. Do not remove the protective tape or paper which is
fixed to the circuit board with-in the upper case.
3. Secure the base to a wall using the screws provided.
Do not over tighten the screws.
4. Connect the controller cable to the upper case and
route it so that it will not be pinched. Clip the upper
case in place on to the base unit on the wall.
Figure 22: Opening the controller case
The controller should be installed in a
location where it is possible for the
home owner to regularly check for
errors. The installer should tell the
customer to check the display
periodically for errors.
In the event of an error involving the
compressor the inline flow boiler will
back up the heat load which will have
higher running costs compared to the
compressor.

Page 20
Section 7: Programming of the controller
OFF/ON Standby Button
Quiet Operation Indicator OFF/ON
Operation LED
Inline flow boiler request Indicator OFF/ON
Operation Mode Button
Force Inline flow boiler Request Indicator OFF/ON
Quiet Operation Button
Inline flow boiler status (OFF/ON)
Inline flow boiler ( Enable / Disable )
Immersion Heater status (OFF/ON)
System Set-up Buttons
System Set-up mode Indicator OFF/ON
Timer Setting Buttons
System Check mode indicator OFF/ON
Force Inline flow boiler (during error)
System Pump down Mode indicator OFF/ON
System Pump down Button
Timer/Clock Setting Display
System Check Button
Remote Display (not used)
Error Reset Button
Outdoor Ambient Temperature Display
Heating Mode indicator (OFF/ON)
Water Outlet Temperature Display
Tank Mode indicator (OFF/ON)
Solar Display (not used on this model)