Dimplex A12M, A16M Installation Manual

8/60472/0

Issue 1

A Class Air Source Heat Pump

A12M / A16M: Installation Manual

ii

Overall view

Figure 1 (a): Outer dimensions of heat pump, (b) position of heat pump registration plate and details

(c) Internal components of heat pump

(a)

(b)

(c)

iii

Contents

1 Introduction .......................................................................................... 1

2 Scope of delivery ................................................................................... 1

3 Pre-Installation advice .......................................................................... 5

3.1 Warnings .......................................................................................... 5

3.2 Intended use ..................................................................................... 6

3.3 Legal ................................................................................................ 6

3.4 Heat pump sizing ............................................................................... 6

3.5 Site selection ..................................................................................... 6

3.5.1 Location of heat pump ................................................................... 6

3.5.2 Heat pump placement and fixing ..................................................... 7

3.6 Plumbing –Preparation ........................................................................ 8

3.6.1 Buffer tank ................................................................................... 9

3.7 Electrical connections - Preparation ...................................................... 9

4 Installation .......................................................................................... 10

4.1 Handling and transport ..................................................................... 10

4.2 Plumbing......................................................................................... 10

4.3 Electrical connections ....................................................................... 11

4.4 Opening the heat pump for electrical connections ................................. 15

4.4.1 Heat pump electrical connection .................................................... 16

5 Set to work .......................................................................................... 17

5.1 Location of indoor components .......................................................... 17

5.2 Set to work ..................................................................................... 17

5.3 Opening the UI ................................................................................ 17

5.4 Using the User Interface ................................................................... 18

6 Pre-commissioning .............................................................................. 18

6.1.1 General/Schematic ...................................................................... 19

6.1.2 Message log ............................................................................... 19

6.1.3 Output Tests .............................................................................. 19

6.1.4 Defrost ...................................................................................... 19

6.1.5 Operating data ........................................................................... 19

6.1.6 History ...................................................................................... 19

iv

7 Commissioning .................................................................................... 20

7.1.1 Waterside check.......................................................................... 20

7.1.2 Temperature check ..................................................................... 21

7.1.3 Electrical connections (SH) ........................................................... 21

7.1.4 Water flow check ........................................................................ 21

7.1.5 DHW setup ................................................................................. 22

7.1.6 Electrical connections (DHW) ........................................................ 22

7.1.7 DHW Test................................................................................... 22

7.1.8 Disinfection ................................................................................ 23

7.1.9 Heating curves............................................................................ 23

8 System health checks .......................................................................... 24

9 Troubleshooting, FAQ .......................................................................... 25

9.1 Table of error codes and descriptions .................................................. 25

10 Technical Specifications ................................................................... 24

Appendices:

A Refrigeration cycle................................................................................A

B Schematic zone diagrams......................................................................B

Schematic 1: 10200110 - Space Heating Only .......................................... B

Schematic 2: 10220290 - Zone Space Heating & DHW ............................... C

Schematic 3: 10300110 - Bivalent Space Heating ..................................... D

Schematic 4: 10310290 - Bivalent Zone Space Heating & DHW .................. E

C Wiring centre electrical connections.........................................................F

D Installer controller cable connections...................................................... G

E Installer menu flow chart.......................................................................H

1

1 Introduction

Thank you for choosing a Dimplex Heat
Pump. The Dimplex A class heat pump
combines outstanding performance to
maximise year-round efficiency no
matter what the weather conditions. It
can also deliver high output and high
temperatures even at outside air
temperatures of -7. The sophisticated
controller makes the system easy to
use and there are many more
technological innovations including a
scroll compressor that uses enhanced
vapour injection.

2 Scope of delivery

Please ensure you check the scope of
delivery before signing any delivery
documentation. Claims for missing or
damaged parts after signing for the
delivery will not be accepted.

There are 3 options to select from when
installing a Dimplex Heat Pump:

 Pack 1 - Space heating and Dimplex

A Class Cylinder

To install the heat pump and
Dimplex A class cylinder together
you must purchase Pack 1 which
contains necessary components
shown in the tables below. A
separate wiring centre is not
required as the wiring centre is built
into the cylinder. The ACCHYPK
Hydraulics pack contains the all of
the necessary hydraulic
components.

 Pack 2 - Space heating and Dimplex

Standard Heat Pump Cylinder

To install the heat pump for space
heating and domestic hot water but
not using an A class cylinder you
must purchase Pack 2 which
contains the necessary components
shown in the tables below. A
separate wiring centre is required to
wire the circulation pumps and zone
controls since this is not supplied on
the cylinder. The ACCHYPK
Hydraulics pack contains the all of
the necessary hydraulic
components.

 Pack 3 – Space heating only

To install the heat pump for space
heating only, you must purchase
Pack 3 which contains the necessary
components shown in the tables
below. A separate wiring centre is
required to wire the circulation
pumps and zone controls. The
ACSSHYPK Hydraulics pack contains
the all of the necessary hydraulic
components.

2

PACK 1:

SPACE HEATING AND DIMPLEX A CLASS CYLINDER

Heat pump

A12M / A16M

Hydraulics Kit A which includes:

ACCHYPK

User interface (UI)

049179

Pump - UPM GEO 25-85 180 (70mm cable)

049148

2 x Pump Valve Gate 1"1/2 – 28mm
2 x Washer 30.1x21x2mm

By pass valve (22mm)
Spring loaded

050557

3 port diameter valve

050564

Isolation valves -
(1) Flow
(2) Return with strainer

Flow 062801

Return

062815CR

4 x Blanking plugs for lifting holes

624105

Installation and User manuals

Dimplex DHW Cylinder Kit

Cylinder

Air vent
Drain

Safety group DHW side - expansion vessel,
hose and bracket, inlet group, tundish

3 x Copper pipes – Pump to buffer/cylinder

Pipe connections to coil, pipe, drain and vent

Pipe connections to pump

3

PACK 2:

SPACE HEATING AND DIMPLEX STANDARD HEAT PUMP

CYLINDER

Heat pump

A12M / A16M

Hydraulics Pack A which includes:

ACCHYPK

User interface (UI)

049179

Pump - UPM GEO 25-85 180 (70mm cable)

049148

2 x Pump Valve Gate 1"1/2 – 28mm
2 x Washer 30.1x21x2mm

Altecnic ERES straight by pass valve
(22mm 22mm) Spring loaded

050557

3 port diameter valve

050564

Isolation valves -
(1) Flow
(2) Return with strainer

Flow 062801

Return

062815CR

4 x Blanking plugs for lifting holes

624105

Installation and User manuals

Wiring centre Kit

Wiring centre module

049162

1 x Temperature probe (NTC10) for DHW

4

PACK 3:

SPACE HEATING ONLY

Heat pump

A12M / A16M

Hydraulics Pack B which includes:

ACSSHYPK

User interface (UI)

049179

Pump - UPM GEO 25-85 180 (70mm cable)

049148

2 x Pump Valve Gate 1"1/2 – 28mm
2 x Washer 30.1x21x2mm

Altecnic ERES straight by pass valve
(22mm 22mm) Spring loaded

050557

Isolation valves -
(1) Flow
(2) Return with strainer

Flow 062801

Return

062815CR

4 x Blanking plugs for lifting holes

624105

Installation and User manuals

Wiring centre Kit

Wiring centre module

049162

1 x Temperature probe (NTC10) for DHW

5

3 Pre-Installation advice

3.1 Warnings

 When transporting the heat pump,

ensure that it is not tilted more than
45° (in any direction), for any
prolonged period of time.

 Do not attempt to lift the heat pump

manually. It weighs 130kg and
should only be lifted using the
appropriate lifting devices.

 Installation and any service work on

the heat pump may only be
performed by authorised and
qualified installer and after-sales
service technicians.

 This device is suitable for mains

connection only: 230V, 1P&N, 50Hz,
and is not suitable for operation
with any electrical generator and
any attempt to do so will void
warranty.

 This device shall be installed in

accordance with national wiring
regulations. The digital inputs are
volt free, if any voltage, such as a
switch live 230V is connected
irreparable damage will be caused
to the wiring centre. The local wiring
regulations should always be
followed paying particular attention
to mixing of low voltage and extra
low voltage cabling.

 Before removing the cover of the

heat pump, cylinder or wiring
centre, ensure that all electrical
circuits are isolated.

 Means for disconnection from the

supply mains must be incorporated

in the fixed wiring in accordance
with the national wiring regulations.

 The heat pump contains refrigerant

at high pressure. Safety measures
are in place to avoid system
pressure build up:

 Stage 1: Pressure transducer

stops compressor

 Stage 2: Pressure switch switches

heat pump off.

 The installation of a residual current

device (RCD) having a rated
residual operating current not
exceeding 30mA is advisable.

 Additional heating may be required

if heat pump is intended to dry out
a new or renovated building, as the
initial heat load will be higher than
the calculated load.

 If the heat pump can be

disconnected from power supply for
prolonged periods of time or where
power supplies are susceptible to
failure, antifreeze must be added to
the system.

 Never use cleaning agents

containing sand, soda, acid or
chloride as these can damage the
surfaces/components.

 We recommend the installation of a

suitable filtration protection system
and a corrosion additive for the
heating system to prevent the
formation of deposits (e.g. oxide
and solids) in the condenser of the
heat pump. The return isolation
valve provided in the hydraulics
pack has a built in strainer for this
purpose.

6

 Products not installed with the

Dimplex hydraulics packs will not be
supported by Dimplex. This includes
but is not limited to thermal stores.

 During the commissioning of the

domestic hot water cylinder, ensure
that the cylinder is full and no water
is drawn from the cylinder as this
will adversely affect the heat pumps
operation.

 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.

3.2 Intended use

This device is only intended for
domestic use, as specified by the
manufacturer. Any other use beyond
that intended by the manufacturer is
prohibited. This requires the user to
abide by the manufacturers product
information. Please refrain from
tampering with or altering the device.

3.3 Legal

The construction and design of the heat
pump complies with all relevant EU
directives (see CE declaration of
conformity).

When connecting the heat pump to the
power supply, the relevant EN and IEC
standards are to be adhered to. Any
further connection requirements

stipulated by the network operation
must also be observed.

When connecting to the heating system
all applicable regulations must also be
adhered to.

3.4 Heat pump sizing

 Ensure that the correct size heat

pump has been selected in
accordance with the latest version of
MIS3005 (UK only) and with the
Dimplex Heat Pump Planning
Manual.

 If a non A-Class heat pump cylinder

is being used, ensure that it has
been accurately sized with the
appropriate coil surface area of the
cylinder to match the heat pump’s
output, flow rate requirements and
that all necessary hydraulic
connections have been considered in
connecting it to the heat pump
system.

 Ensure that suitable heat emitters

have been sized in accordance with
the Heat Emitter Guide (UK only)
and selected ensuring a low flow
temperature design. To maximise
system efficiency it is important to
design the system with the lowest
flow temperature possible.

3.5 Site selection

3.5.1 Location of heat pump

 The heat pump must be installed

outdoors with adequate clearances
for ventilation and maintenance as
shown in figure 2. It is
recommended that the heat pump is
installed along the property wall, as
shown below.

 There must be a minimum distance

of 1000mm in front of the fan to

7

prevent air re-circulation.
Positioning the heat pump in a
confined space, frost hollow or well
will result in reduced heat pump
operating efficiency.

 The fan should preferably not face

prevailing winds to ensure correct
air flow through the evaporator.

Figure 2: Required free space around heat

pump for ventilation and maintenance

 Although the heat pump is within

noise and vibration regulations
outlined in MCS 007, it is
recommended to avoid positioning it
close to bedroom windows, as the
fan and compressor may be
operational at night.

3.5.2 Heat pump placement and fixing

 Approximately 2 litres of condensate

water is drained from the system
every time a defrost cycle occurs.
Therefore, it is essential that the
condensate pipe is fed into a drain
or soak away to allow for safe
disposal of the excess water, away
from footpaths or patios.

 The condensate pipe must be kept

frost free. Freezing of this pipe due
to incorrect installation can result in
irreparable damage and void
warranty.

Figure 3: Position of fixing holes and condensate drain

8

 The condensate pipe should not run

into sewer pipe as fumes may travel
into the heat pump and cause
corrosion to the evaporator coil.

 The heat pump must be fixed onto a

level, stable base that is capable of
withstanding the unit’s weight of
130kg, with a minimum of 30mm
clearance around all sides of the
heat pump (recommended minimum
L x W x D = 1000 x 470 x 100mm).
It can be secured with M10 anchor
bolts, using the fixing holes shown
in figure 3.

 Ideally the heat pump should be

located close to the property.
Positioning of the heat pump at a
distance from the property will
result in the need for extra insulated
pipe, which will lead to extra cost,
and result in additional heat losses.

3.6 Plumbing –Preparation

When selecting piping to install with the
heat pump please ensure:

 The pipe sizes are adequate to allow

correct minimum water flow rate
through the heat pump.

Table 1: Maximum length of copper pipe

Nominal

Minimum

@ 2050 l/h

@ 1200 l/h

18 kPA

60 kPa

Diameter

(mm)

Max length

(m)

Max length

(m)

15 1 10

22

10

80

28

30

265

32

60

525

 The pipe lengths given in table 1

include the straight length of the
piping and all elbows. The
equivalent straight length (L) of
each elbow is found by multiplying
the outer diameter of the pipe (D)
by 30:

 External pipes should be adequately

insulated with vapour resistant
insulation and protected against
damage to prevent excessive heat
losses. All joints should be suitably
sealed and exposed pipework must
be avoided.

 Existing hot water systems should

be flushed prior to connection to the
heat pump to remove all
contaminants and impurities, in
accordance with the latest version of
MIS 3005.

 Make the water flow and return

pipes positioned correctly for
connection to the heat pump as
shown on the label in figure 4 and
on the back of the heat pump.

 Isolation valves, supplied in the

Dimplex heat pump hydraulics pack,
allow the strainer to be removed
and cleaned without having to drain
the system (non-return valve and
ball valve with strainer). Installation
of these valves is discussed in more
detail section 5.2.

 If heat emitters consist of underfloor

heating and higher temperature
heat emitters, a mixing valve must
be used to prevent high
temperature water entering the
underfloor heating manifold.

L = D x 30

9

Figure 4: Plumbing with isolation valve with strainer to be fitted to return pipe

3.6.1 Buffer tank

The heat pump uses reverse cycle
defrost in order to defrost the
evaporator, which will happen
automatically when required in
cold/moist weather conditions.
Therefore, it is necessary to connect a
buffer tank in series with the heat
pump, as shown in the hydraulic
schematic diagrams (Appendix B). The
Dimplex A-Class cylinder range come
with an integrated buffer tank, which:

 Provides sufficient energy for the

unit to carry out successful defrost.

 Increases compressor life due to the

extension of minimum starts

It is recommended that a buffer with a
heating element is used as it may be
required if initial start-up and
commissioning are carried out in cold
weather.

3.7 Electrical connections -

Preparation

 Ensure the incoming power supply

and the distribution board are
suitably rated.

 Ensure that the regulations specified

by the local electricity supplier have
been adhered to.

 The supply cable must be sized to

meet the requirements of national
wiring regulations for current
carrying capacity and disconnection,
a minimum cross sectional area of
6mm² steel wire armoured (SWA)
cable is recommended.

 The required controller cable is a

shielded MODBUS cable RS485, for
example a 4 core 1mm² 24 AWG
(Nominal impedance 120Ω) Foil and
Braid, which can be purchased from
Dimplex as an accessory.

10

 The user interface acts as the

temperature probe in the primary
zone. For multiple zones,
mechanical thermostats or NTC10
temperature probes may be used.

4 Installation

4.1 Handling and transport

 Remember that the heat pump

should never be tilted by more than
45° during handling and transport,
as depicted on the registration plate
and in figure 5.

Figure 5: Tilt angle

 Ensure that there is a clear pathway

for a truck to deliver the heat pump
as close to the selected location as
possible.

 The heat pump weighs 130kg and

therefore should only be lifted by
means of a lift truck, hand truck or
lifting rods with straps that can be
fed through the holes in the base
plate and frame, shown in figure 6.

 The installer must use a suitable

lifting method, in accordance with in
accordance with health and safety
regulations.

 Straps must also be used with the

lifting rod to prevent the heat pump
from toppling.

Figure 6: Handling of heat pump

4.2 Plumbing

 The system must be flushed, filled

and all trapped air should be
removed. Air bleeds must be
installed at every high point; in
particular, the installer must
remember an air bleed on the flow
pipe if it is a local high point since
there is no air bleed point on the
condenser.

 The dirt strainer, supplied in the

Dimplex heat pump hydraulics pack,
is built into the return isolation
valve and must be installed on the
return pipe to prevent
contamination of the condenser heat
exchanger

 If an alternative strainer is used, it

must be at least 7 microns in size
and connected with ball valves.

 Fit flow and return isolation valves

(Flow 062801, Return 062815CR)
and piping to each of the water
ports on the back of the heat pump,
as shown in figure 7.

11

Figure 7: Flow and return valves

 The non-return valve built into

‘1062815CR’ allows the strainer to
be cleaned without draining the
system, by simply closing the flow
and return valves and removing the
strainer. The only water that is lost
will be that in the return valve.
System pressure must be checked
once valves are re-opened.

 Direct condensate drain pipe to soak

away or drain, as illustrated in
figure 3 in section 3.5.2.

 All piping must be properly

insulated.

4.3 Electrical connections

The heat pump system consists of the
heat pump, wiring centre and user
interface. If a Dimplex A Class cylinder
is also purchased, the wiring centre is
built into the cyinder. The user interface
contains a thermostat and is sufficient if
one heating zone is present.

Optional, additional UI’s, temperature

probes or room thermostats are
required for additional heating zones.
Figure 8 (a) – (c) shows the wiring
configuration of the 3 different
installation options (outlined in section
2: Scope of Delivery, at the beginning
of this manual).

12

Figure 8 (a): Wiring configuration of space heating and hot water - Dimplex A Class cylinder

13

Figure 8 (b): Wiring configuration of space heating and hot water – Dimplex standard

cylinder

14

Figure 8 (c): Wiring configuration of space heating only

15

4.4 Opening the heat pump for

electrical connections

To open the heat pump, follow the
procedure shown in figure 9:

1. Unscrew 2 screws holding bottom

panel, using a PZ2 screwdriver.

2. Pull the front panel down and then

out to remove.

3. Unscrew 5 screws holding the front

cover of the electrical box to open
and pull down towards you.

4. Remove 2 hex screws holding the

door flap in place to access cable
connections.

NOTE: Follow steps in reverse order to

close the heat pump. When closing the
heat pump front panel, ensure that the
top and bottom panels are interlocked.

Figure 9: Opening the casing to fit electrical connections

WARNINGS:

 Before opening the heat

pump, ensure all circuits are
isolated.

 Ensure that the components in

the electrical box do not get
wet when the electrical box is
opened.

16

4.4.1 Heat pump electrical connection

To make electrical connections to the
heat pump:

1. Feed power cable and controller

cable through gland at the back of
the base panel.

2. Remove the cable access cover and

using the opening in the base panel
for access, pull power cable and
controller cable through the two
cable glands in base panel and
through the two glands on the side
of the electric box.

3. Allow sufficient cable to ensure the

connections are not strained when
the cover is opened. Armoured cable
must be stripped once it has been
pulled through the base cable gland
in order to pass through cable gland
in the side panel of the electrical
box.

4. Connect power cable and controller

cable as shown in figure 10.
Stranded cable must be ferruled to
insert into push in connections.

5. The controller cable is then

connected from the heat pump to
the wiring centre (see wiring
diagrams in Appendix C and D).

Figure 10: Heat pump electrical connections

17

5 Set to work

5.1 Location of indoor components

Location of UI and room thermostats:

The user interface and room
thermostats should be installed indoors
in a location that is out of reach of
children, but where the screen can be
easily seen (usually 1.2m – 1.7m from
the floor).

The controller and thermostats should
be installed on internal walls in living
area to reflect the correct temperature,
and away from direct sunlight, drafts
(windows and doors) and heat emitters.

Location of wiring centre:

If a Dimplex A Class cylinder is used,
the wiring centre is built in and pre
wiring. If a non A Class cylinder is used,
it is recommended to install the wiring
centre in close proximity to the
cylinder.

5.2 Set to work

When starting up the heat pump you
must first ensure:

 The isolator switch is switched on.
 The heat pump is connected to the

mains power supply.

 The wiring centre or DHW cylinder is

connected to the mains power
supply.

 The UI and the heat pump are

connected to the wiring centre or
DHW cylinder.

Once the connections have been made
and the UI has been switched on, the
system may take a couple of minutes
to start up.

5.3 Opening the UI

It is recommended to install the heat
pump, wiring centre and UI in that
order. If additional UI’s are required, or
if it is necessary to install the system in
a different order, a jumper must be
moved on the UI’s PCB board to the ON
pin, as shown in figure 11.

The cover of the UI must be removed in
order to mover the jumper. To remove
and replace the cover:

To remove:

 Unscrew the screw at the bottom of

the UI and lift the cover and rotary
dial.

To replace:

 Position the rotary dial over the

holding pin on the board, ensuring
the two on lined up correctly.

 Replace cover and bottom screw.

Figure 11: Jumper on UI board

18

5.4 Using the User Interface

Figure 12: Main user interface (UI)

 Select – click middle of the rotary

dial (Enter/Confirm)

 Change selected value – turn the

rotary dial to desired value

 Confirm change – click middle of

rotary dial (Enter/Confirm)

 Back up one level – click small

button (Escape)

6 Pre-commissioning

When switching on the heat pump for
the first time, and after start up
sequence, you will be greeted with the
welcome screen, shown in figure 13.

Figure 13: Home screen

To access the Installer Menu, you must
click into the messages menu. Once in
the messages menu, you must select

‘Login’ as shown in figure 14, and turn

the dial to 55 in order to access the
Installer Menu.

Figure 14: Home screen

When you enter the installer menu, you
will see the ‘Start guide’ screen, as

shown in figure 15 (a). Selecting ‘UK’

will bring you to the Installer Menu.

Select ‘Commissioning’ to begin and

follow the step by step guide on the
user interface, which will take you
through all necessary steps of
commissioning. For commissioning
instructions, move to Section 7 now.

(a) (b)

Figure 15: (a) Welcome screen

(b) Installer menu

Messages
menu

Login
= 55

19

6.1.1 General/Schematic

In some cases, it may be necessary to
carry out checks on individual
components of the heating system
before beginning the commissioning
routine. Accessing General/Schematic
menu allows you to set the date and
time, and the level of access allowed.
Selecting ‘Next’ will bring you to the
Schematic menu, as shown in figure 16,
Once you have selected a schematic
zone diagram, a number of other
options will become available in the
main Installer menu, as described in
Table 2.

Figure 16: Schematic zone diagram

selection

Table 2: Description of submenus in the Installer Main Menu

Menu option

Content

Message log

Provides log of message – error code, date, time, description

Output tests

Allows ON/OFF tests for individual components and zones

Defrost

Allows defrost cycle to be manually started

Operating data

Provides full list of system parameters

History

Provides temporary and permanent history of run times of
different components

6.1.2 Message log

The message log menu provides a list
of all errors that have taken place,
including the date and time that they
occurred. Selecting an individual error
code will provide more information on
the type of error that occurred.

6.1.3 Output Tests

The output tests menu allows you to
run ON/OFF tests on individual
components of the system such as the
zone pumps, valves, immersion, backup
heater, fan and defrost.

6.1.4 Defrost

Before running a manual defrost cycle
you must ensure the buffer has been
isolated from the heating, as stated by
the message on the UI. Selecting ‘Run

Defrost’ begins the defrost cycle. The

defrost screen will state the time

remaining in the defrost cycle. When
the cycle is finished, the screen will tell
you that the defrost cycle is complete.

 A heating water return temperature

of 18°C ensures proper defrosting of
the evaporator.

6.1.5 Operating data

The operating data menu provides a list
of all the system parameters such as all
temperatures including each zone set
and actual temperatures, flow rate, and
heat pump status.

6.1.6 History

The History menu shows the temporary
run time history of the components of
the system. These values can be reset
in order to record run times over a
certain time period. Selecting ‘Next’
brings you to the permanent run time
history which cannot be reset.

20

7 Commissioning

Select ‘Commissioning’ to begin and

follow the instructions on the system
controller. The commissioning routine
will take you through a number of
checks and tests to complete the
installation, as outlined in table 3.
When you finish each submenu in the
commissioning process, selecting ‘Next’

will take you back to the main
Commissioning menu, where a new
submenu will be available.

The first menu you will be asked to
complete is the General/Schematic
menu. General menu allows you to set
the date and time.

Table 3: Description of each submenu in the Commissioning Menu

Menu option

Content

General / Schematic

Selection of time, date and appropriate plumbing schematic

Waterside checks

Checks that must be carried out on the water circuit

Water flow check

Ensures the circulation pump flow rate is okay

Electrical connections

Ensures all the necessary electrical connections to the wiring
centre have been made correctly

DHW Setup

Ensures the cylinder is full and connected correctly

DHW Test

Runs DHW cylinder test to find maximum achievable
temperature (may take up to 90 minutes depending on heat
pump and cylinder size)

Disinfection

Setting frequency and time of disinfection

Heating curve

Selection of heating curve for each zone depending on type of
heat emitters in place

In the ‘Schematic’ menu, shown in
figure 16 above, you can select the
relevant schematic zone diagram, in
accordance with those in Appendix B.
Once you select the relevant schematic
zone diagram, more options will appear
on the installer menu, depending on the
zone diagram you have selected. As
each menu is completed, more options
will become available, as outlined in the
flow chart in Appendix E.

7.1.1 Waterside check

The ‘Waterside check’ menu allows you

to select if temperature control is based
on the flow or return temperature, as
shown in figure 17. This will apply to
heating curves, as discussed in section

6.1.8 below.

Figure 17: Temperature control

It is recommended to set the
temperature control based on the flow
temperature for radiators and smart
rads, and on the return temperature for

underfloor heating. Selecting ‘Next’ will

bring you to the waterside checks
menu.

21

A number of waterside checks must be
carried out as part of commissioning,
and must be ticked as completed in the
Waterside check menu:

 The system must be flushed.
 The strainer must be fitted to the

return pipe.

 The system must be pressurized

(You must enter the system
pressure).

 The system must be fully bled.
 The expansion vessel must be fitted
 Membrane pressure must be

checked and adjusted if required.

When checks are completed and ‘Next’
is selected, the type of temperature
measurement devices to be used in
each heating zone must also be
selected:

 User Interface
 Temperature probe
 Mechanical thermostat

Selecting ‘Next’ will bring you to the
‘Temperature check’ menu.

7.1.2 Temperature check

This screen displays the temperatures
being read by all temperature probes.
Tick each box once you have ensured
that all the temperatures are as
expected.

7.1.3 Electrical connections (SH)

This menu provides a list of electrical
connections that should be made prior
to commissioning for space heating.
The lists based on the schematic zone
diagram selected and also the type of
temperature devices that will be used in

each zone. Once you have confirmed all
checks and select ‘Next’, you will return
to the commissioning menu where you

can now access the ‘Water flow check’

menu.

7.1.4 Water flow check

Select ‘Run Test’ to begin water flow

check. The circulation pump will be
tested first by running it for 30
seconds. Once you check that flow is

detected, click ‘Continue’ to confirm

that the pump is working correctly.

Once this is successful, the compressor
will be run for 5 minutes. As the test
runs, the screen will give you
information on the status of the heat
pump and the time remaining on the
test. If you do not have flow or if there
is a problem, you can stop the test.
Once the test is completed, you will see
one of three messages:

1. No flow detected

2. Flow too low

3. Flow detected

If you see message 1 or 2, you must
carry out the changes recommended on
the screen and repeat the test. There
will be a time delay before you can
restart the test. When you see the
screen shown in figure 18, with the
pump highlighted in green, flow has
been detected and the compressor test
is complete.

You will receive the status ‘Waterside is
OK’ when the waterside checks are
completed. Selecting ‘Next’ brings you

to the Electrical Connections menu.

If carrying out start up in cold weather,
start by heating the buffer. Once it
reaches the required temperature open
each zone slowly and in series,
especially for underfloor heating.

NOTE: If these options are ticked but

haven’t been carried out, any failure in

the system will be outside of warranty.

22

Figure 18: Green symbol on successful

compressor test

If you have selected Schematic 1 or 3
(Space heating only or Bivalent space
heating), move now to section 7.1.9

‘Heating Curves’ to complete the

commissioning process.

7.1.5 DHW setup

Before commissioning the DHW side, a
number of checks must be carried out,
as shown in figure 19.

Figure 19: DHW checks

When you have ticked each box to
confirm each DHW check, ‘Next’ will
bring you back to the installer menu,

where you can now select ‘Electrical
Connections (DHW)’.

7.1.6 Electrical connections (DHW)

This menu provides a list of electrical
connections that should be made prior
to commissioning the domestic hot
water cylinder. You must check and
confirm all connections in order to

make the ‘DHW Test’ available in the

installer menu.

7.1.7 DHW Test

Before you run the DHW test, you will
be asked to check that the valve is in
the DHW position, as shown in the
screen in figure 20. Check that the red
actuator marker changes to the correct
position.

Figure 20: Valve check screen

When you have completed the valve

check and select ‘Next’, you will see the

DHW test screen, which informs that
the test can take up to 90 minutes.

Selecting ‘Run test’ begins the DHW

test and shows you the time remaining.

If the test fails, you will see the screen
shown in figure 21, which provides
information on why the test failed, and
advice on checks to carry out.

If the test is complete and has been
successful, you will see the screen
shown in figure 22, which shows the
maximum temperature that the cylinder
can achieve.

NOTE: If you leave the commissioning

menu before you successfully complete
commissioning, all previous information
entered will be saved and completed
menus will be highlighted in green.

23

Figure 21: DHW test failed

Figure 22: DHW test complete

7.1.8 Disinfection

The temperature and frequency of the
disinfection cycle can be adjusted in
this menu. If the temperature is set to
higher than the heat pump can achieve,
the screen shown in figure 23 will
appear which notifies that the
immersion heated will be used to reach
the disinfection temperature.

Figure 23: Disinfection setup

7.1.9 Heating curves

When selecting heating curves, you will
do so zone by zone. Selecting the zone

and pressing ‘Next’ will allow you to

select the kind of heat emitters that are
in place in the selected zone. The four
heating curves are for:

 Smart Rad
 Under floor
 Standard Rad
 Custom

Selecting Smart Rad, Under floor or
Standard Rad will bring you to a default
heating curve for the selected emitter.

The pre-defined curves have
recommended temperature ranges for
each heat emitter.

 Smart Rad Max 48 Min 35
 Under floor Max 30 Min 25
 Standard Rad Max 55 Min 45
 A fourth option ‘Custom’ provides a

flat line curve.

The values that generate the heating
curve graph can be changed, by
selecting the corresponding
temperature box and adjusting the
temperature, as shown in figure 24.

Figure 24: Heating curve for Smart Rad

NOTE: Pre-defined heating curves

should only be changed if the heat pump
does not achieve the pre-defined,
recommended temperatures.

24

The green line on the right indicates the
maximum outdoor temperature at
which the heat pump stops running.
The yellow line on the left indicates the
minimum outdoor temperature at which
the bivalent heating system starts
working.

The red line indicates the temperature
that the water will be heated to, based
on the outdoor temperatures. The
‘Default’ option will reset the pre­defined values. Set will save entered
values.

To complete commissioning, you must

select the ‘Setup complete’ submenu in

the installer menu, as shown in figure
25:

Figure 25: Full Commissioning menu

When commissioning has been
successfully completed, you will see the
screen shown in figure 26. Selecting
‘Automatic’ will activate all settings. The
default setting for the heat pump is
OFF. To turn on the heat pump, you
must return to the home screen to
access the user menu.

Figure 26: Commissioning complete

For further information on end user
controller instructions please see:

‘A Class Air Source Heat Pump User
Guide’ supplied in the Hydraulics Pack

with this manual.

8 System health checks

Heat pump:

 Is the fan clear from debris?

Electrical:

 Is the power cable firmly fixed?
 Is the earth wire connection secure?
 Is the supply voltage correct?

Hydraulics:

 Is the water pressure higher than

XXbar?

 Are there any leaks in the system?
 Is the filter clear of debris?

Note: It is recommended that the
strainer is checked and cleaned 24
hours after commissioning, and
regularly within the first week of
operation.

Indoor settings:

 Are the set temperatures and

heating times suitable for the
occupants?

 Is the building warm enough for the

occupants or does the heating curve
need to be adjusted?

 Is the UI screen working correctly?

NOTE: For successful commissioning

you MUST follow through the menu
until you see the screen shown in
figure 24. If you do not see this
screen, commissioning has not been
successful and will void warranty of
the heat pump.

25

9 Troubleshooting, FAQ

If the heat pump is being installed in a
holiday home or temporary domestic
dwelling, antifreeze must be added to

the system in case of unattended power
cuts.

9.1 Table of error codes and

descriptions

24

10 Technical Specifications

1

Type and order code

A 12

A16

2

Design

2.1

Degree of protection according to EN 60529 for compact unit or heating element

IP 24

IP 24

2.2

Installation location

Outdoors

Outdoors

3

Performance data

3.1

Operating temperature limits:

Min / Max

Min / Max

Heating water flow and return temperature

°C

25 / 65

25 / 65

Outside air temperature

°C

-20 / 35

-20 / 35

Seasonal Performance Factor (SPF) for Under floor at 35°C1

3.9

3.9

Seasonal Performance Factor (SPF) for Radiators at 55°C1

3.6

3.6

3.2

Heating water temperature difference at standard rating
condition

A7 W352 K 5

5

Heat output / COP

at A7 W352

kW / ---

12 / 4.7

12 / 4.7 *

at A-2 W352

kW / ---

12 / 3.5

15.5 / 3.2

at A-7 W352

kW / ---

12 / 3

14.3 / 3

at A7 W552

kW / ---

12 / 3

12 / 3 *

at A-2 W552

kW / ---

12 / 2.5

15.6 / 2.4

at A-7 W552

kW / ---

12 / 2.2

15.3 / 2.2

at A7 W652

kW / ---

12 / 2.5

12 / 2.5*

at A-2 W652

kW / ---

12 / 2.0

15 / 1.99

at A-7 W652

kW / ---

12 / 1.8

15 / 1.8

* Performance at this point is optimised to match the building heat load and maximise the Seasonal performance factor.

3.3

Sound power level3

(Provisional)

dB(A)

64

64

3.4

Sound pressure level at 10m (Heat pump against wall)

dB(A)

40

40

3.5

Heating water flow rate @ A7 W35 (nominal)

m³/h, l/min

2.1 / 35

2.1 / 35

3.6

Air flow @ A7 W35

m³/h

3700

3700

3.7

Refrigerant; total filling weight

Type / kg

R410A / 2.0

R410A / 2.0

3.8

Water capacity of stainless steel heat exchanger

litre 1 1

3.9

Polyol ester oil in compressor

litre

1.18

1.18

4

Dimensions, connections and weight

4.1

Device dimensions without connections

H x W x L mm

1571 x 932 x 401

1571 x 932 x 401

4.2

Physical volume

m³

0.59

0.59

4.3

Device connections to heating system

inch

1" ext. thread

1" ext. thread

4.4

Weight of the transportable unit(s) excluding packaging

kg

130

130

5

Electrical connection (Heat pump)

5.1

Nominal voltage; fuse protection

V / A

230 / C 40

230 / C 40

5.2

Nominal power consumption / current A7 W35

kW / A

2.6 / 11

2.6 / 11

5.3

Maximum power consumption / current A-2 W65

kW / A

6.9 / 30

8.1 / 35

5.4

Power factor A7 W35 / cosϕ

A / ---

11 / >0.95

11 / >0.95

5.5

Power input of integral fan @ A7 W354

W

60

60

6

Other design characteristics

6.1

Defrosting

Automatic

Automatic

Type of defrosting

Reverse cycle

Reverse cycle

6.2

Heating water in device protected against freezing by software

Yes

Yes

1.)

Calculated to EN15316 excluding hot water

2.)

These data characterise the size and performance of the system according to EN 14511 with clean heat exchangers. Abbreviations have
the following meaning, e.g. A2 / W35: outside temperature 2°C and heating water supply temperature 35°C. A2 / W35 test, takes into
account defrosting as per EN 14511.

3.)

According to EN 12102.

4.)

Fan is variable speed, rated input relates to nominal input power.

A

Appendices

A Refrigerant cycle

B

B Schematic zone diagrams –

Schematic 1: 10200110 - Space Heating Only

C

Schematic 2: 10220290 - Zone Space Heating & DHW

D

Schematic 3: 10300110 - Bivalent Space Heating

E

Schematic 4: 10310290 - Bivalent Zone Space Heating & DHW

F

C Wiring centre electrical connections

G

D Controller cable connections

H

E Installer Menu Flow Chart

I

EC Declaration of Conformity

GDC Group Limited,
Millbrook House, Grange Drive,
Hedge End, Southampton,
Hants, SO302DF,
United Kingdom

Manufacturer: Glen Electric Ltd

Greenbank Industrial Estate,
Rampart Road,
Newry,
Co. Down,
BT34 2QU

Hereby certified that the following device(s) complies/comply with the applicable EU directives. This certification
loses its validity if the device(s) is/are modified.

Description: Heat Pump Type: Air – to – Water Model: A16M

Model: A12M

EC Directives:

Low voltage directive 2006/95/EC
EMC directive 2004/108/EC
Pressure equipment directive 97/23/EC

Applied Standards:

EN 60335-1:2012; EN60335-2-40:2003+A11+A12+A1+corr.+A2:2009+AC:2010
EN55014-1:2006; EN55014-2:1997+A1:2001
EN61000-3-2:2006; EN61000-3-3:1995+A1:2001+A2:2005
EN378-1:2008+A1:2010; EN378-2:2008+A1:2009; EN378-3:2008; EN378-4:2008
EN 14511-1:2011; EN14511-2:2011; EN14511-3:2011; EN14511-4:2011

Conformity assessment procedure according to pressure equipment directive:

Module A

CE mark added:

2013

EC declaration of conformity issued on:

XX June 2013

Ireland, XX.06.13 Technical Director Martin Betz: __________________

Issue: 1