IDEAL AIRTHERM 4.5, AIRTHERM 9, AIRTHERM 12 Installation And Operating Manual
INSTALLATION
AND OPERATING
AIRTHERM
Air Source Heat Pump
4.5, 9, 12
For users guide see reverse of book
When replacing any part on this appliance, use only spare parts that you can be
assured conform to the safety and performance specification that we require.
Do not use reconditioned or copy parts that have not been clearly authorised by Ideal.
For the very latest copy of literature for specification and maintenance practices visit our
website www.idealheating.com where you can download the relevant information in PDF format.
June 2011 UIN 204855 A03
SD535752 Issue 5
2
Ideal airtherm - Air Source Heat Pump - Installation
3Ideal airtherm - Air Source Heat Pump - Installation
Ideal airtherm 4.5, 9 & 12
Air Source Heat Pump
Destination Country: GB, IE
CONTENTS
How the Heat Pump Works ........................................... 4
Introduction .................................................................... 5
Heating with a heat pump ............................................. 5
Safety precautions ........................................................ 5
Location .......................................................................... 6
Unpacking ...................................................................... 6
Plumbing - pipework ..................................................... 7
Plumbing - buffer tank and hot water cylinder ........... 7
Electrical......................................................................... 8
Electrical Connections .................................................. 8
Internal wiring ................................................................ 8
Electrical Diagrams .................................................. 9-10
Internal Machine Circuit Diagrams ....................... 11-12
Frost protection ........................................................... 13
Control Panel ............................................................... 13
Commissioning ............................................................ 14
Handing Over ............................................................... 14
Fault nding ............................................................ 15-16
Data sheet .................................................................... 17
Machine dimensions, access panels and
electrical/water connections ................................. 18-20
System designs - S Plan ........................................ 21-22
System designs - W Plan ....................................... 23-24
System designs - Bivalent installation ...................... 25
Refrigeration Diagrams .......................................... 26-27
Optional weather compensation ................................ 28
Mounting the sensor ................................................... 29
Wiring of the Optional Weather Compensator .......... 29
Heat Pump and Buffer Installation Req ................ 30-33
Commissioning Checklist...................................... 34-35
4
Ideal airtherm - Air Source Heat Pump - Installation
DOMESTIC
PREMISES
OUTSIDE
AIR
The EVAPORATOR collects heat from the
outside ambient air, pre-heated by the sun.
With Ideal, heat pumps high volumes of
outside air are drawn into the unit by the fan
and expelled through the evaporator fins.
The evaporator has liquid refrigerant
passing through it, which is at a
considerably lower temperature than the
ambient air, therefore the air gives up its
heat to the refrigerant, which then vaporizes.
This pre-heated vapour now travels to-
The COMPRESSOR where it is
compressed and upgraded to a
much higher temperature. The hot
vapour now enters-
The EXPANSION DEVICE and from
there, now at low pressure, it is
returned to the evaporator and the
cycle starts again.
The CONDENSER where it is surrounded
by water from the heating system. The heat
is given up to the cooler water and the now
cooler refrigerant returns to its former liquid
state but still under high pressure from the
compressor. This pressure is released by
passing the liquid through -
Coefficient of Performance
The efficiency of a Heat Pump is usually called its 'Coefficient of Performance' - (C.O.P.) which is simply a ratio of
heat output to energy input, both being expressed in kW. Thus a Heat Pump absorbing 1 kW of electricity, collecting
4 kW of energy from the air, and delivering 5 kW of heat to the pool water is said to have a C.O.P. of 5:1.
Naturally this ratio will vary according to the temperature of the water and the ambient air.
HOW THE HEAT PUMP WORKS
The Ideal airtherm Heat Pump provides thermodynamic heating by means of a vapour compression cycle
(similar to that employed in a conventional refrigerator), in addition to operating as an active solar collector.
5Ideal airtherm - Air Source Heat Pump - Installation
GENERAL
INTRODUCTION
This installation manual is accompanied by a user guide (see
reverse of this book), a commissioning record sheet and a
warranty registration card, all of which should be left with the
householder. The user guide explains how the system works,
how it is controlled and what to do in the event of a problem. The
commissioning record sheet must be completed as its production
will be required in the event of a warranty claim.
HEATING WITH A HEAT PUMP
The Ideal heat pump is designed to operate up to 65oC water
temperature for the domestic hot water delivery, and negates
the need for direct electrical heating in the form of an electrical
emersion heater. The unit also provides space heating
temperatures variable from 35oC to 55oC.
Heat pumps for domestic heating are a fully proven technology
which will give many years of trouble-free service. Ideal Heat
Pumps which are MCS approved have been specically designed
for optimum operation in the UK’s climate.
However, unlike an oil or gas boiler which may be oversized for
the heating demand of the property and therefore regularly cycles
on and off, a heat pump is closely matched to the heat demand
and is designed to run for long periods without switching on/off.
The following steps must therefore always be taken to ensure a
successful installation. Major problems can occur if they are not
taken and failure to comply will invalidate the warranty.
a. SAP or equivalent heat loss calculations must be established
with the results recorded on the commissioning sheet.
b. The heat pump must be correctly sized in relation to the
calculated heat losses.
c. The space heating system must be capable of satisfying the
heat demand at the water ow temperature set for the heat
pump. This is particularly important where retro-tting a heat
pump to a radiator system designed originally for a Delta T of
60
o
C, as the heat pump will run at a Delta T of 30oC. In this
situation, you will normally need to t larger radiators.
d. The electrical supply must be adequate to meet the start
current demand.
e. The heat pump and the associated heating system must be
commissioned in accordance with the procedures laid down in
this manual.
A heat pump may be tted on a stand-alone basis (monovalent
system) to satisfy the full heating and hot water demand of the
property or in parallel with an existing boiler (bivalent system).
In the case of a bivalent installation the heat pump is sized to
provide a variable proportion of the annual heating requirement
(say 85%) with the existing boiler integrated to deliver the
balance on the coldest days. In bivalent systems, the heat pump
is sometimes only linked to the space heating system which
eliminates the requirement to t a new DHW cylinder.
Standard designs for several different congurations, including
plumbing and electrical circuits, are included in this manual.
REGULATIONS
The Ideal airtherm models conrm
• BSEN60335-1:2002&2-40:2003,andthereforecomply
withtheLowVoltageElectricalEquipmentDirective73/23/
EEC;93/68/EC.
• BSENISO12100-1:2003,BSENISO12100-2:2003,BS
ENISO13857:2008:BSENISO13850:2006,andtherefore
complywiththeSupplyofMachinery(Safety)Directive98/37/
EC.
• BSEN55014-1:2000+A1:2001+A2:2002,14-2:1997+A1:2001,
EN61000-3-2:2000,-3-3:1995+A1:2001,-4-2:1995,-43:1996,-4-4:1995,-4-5:1995,-4-6:1996,-4-11:1995.
andthereforecomplywiththeElectromagneticCompatibility
Directive2004/108/EC.
• ComplywiththePressureEquipmentDirective97/23/EC,
FluidGroup2,Category1.
• ComplianttoRoHSDirective2002/95/EC
SAFETY PRECAUTIONS
a. The unit must be securely installed on a structure that can
sustain its weight. If mounted on an unstable structure, it may
fall causing injury or damage.
b. If the heat pump is installed in an enclosed area, sufcient
ventilation must be provided so as not to impede the air ow
through the unit and to prevent the concentration of refrigerant
gas in the room building up in the event of a leak. (See
diagram - page 6)
c. All electrical work must be performed by a qualied technician
and comply with the latest I.E.E (17
th
) Regulations. The
machine should be installed in accordance with EMC
2004/108/EC.
d. Electricity to the unit must be supplied through dedicated
power lines and the correct voltage and circuit breakers must
be used. Power lines with insufcient capacity or incorrect
electrical work may result in electric shock or re. The
electrical ratings of Ideal heat pumps are included in the
datasheet on page 16 of this manual.
e. Any external heating device tted to the plumbing circuit of the
heat pump must have its own thermostatic control safety cut
out.
f. Immersion heater elements in any hot water tank must have a
built in thermostat.
6
INSTALLATION
Ideal airtherm - Air Source Heat Pump - Installation
150mm
AIR INLET
AIR OUTLET
1500mm
500mm50mm
AT9630
TYPICAL INSIDE OR PLANT ROOM INSTALLATION
Grill or apertures MUST comply with Figures (See Table 1)
AIR FLOW
AIR FLOW
INCORRECT CORRECT
AT9631
Table 1
Model Minimum Free Area m
2
Inlet Discharge
airtherm 4.5 0.440 0.114
airtherm 9 0.440 0.114
airtherm 12 0.619 0.1313
LOCATION
The heat pump is suitable for outside installation.
a. Select a location where any potential noise disturbance is
minimised.
b. Provide a rm level base capable of supporting the weight
of the machine. Fixing holes are provided for bolting the
machine down to the base.
c. If wall mounting, ensure that the wall and framework are
capable of supporting the machine and use anti-vibration
mounts to prevent noise transmission. The weights of the
heat pumps are included on the data sheet on page 16 of
this manual.
d. If installing in a location exposed to strong wind, do not face
the air outlet of the unit against the direction of the wind as
wind entering the unit may impede the normal airow and
result in a malfunction.
e. Allow for the minimum clearances around the machine, as
shown below, required for unobstructed air ow and access
to service panels. A clearance of 1 metre above the unit is
recommended for servicing access through the top panel.
f. Consider protection from extreme weather conditions with a
cover or enclosure if the machine is installed externally
g. Consider tting a protective guard where the machine could
be exposed to vandalism or other damage.
h. If installed in a plant room or other building, ensure that the air
outlet is positioned directly adjacent to the outside wall with
inlet and discharge grilles or apertures of minimum free areas
as detailed below.
UNPACKING
AT9656
1. Position the heat pump close to point of installation on a
sound at surface and in an area large enough to unpack
the unit.
2. Carefully remove the plastic strapping securing the unit
and carton sleeve to the pallet.
3. Fold back the top aps to gain access to the literature
pack.
4. Remove the instructions and read thoroughly before
unpacking the product.
5. When ready for installation lift off the cardboard carton
sleeve.
6. Carefully remove the unit from the pallet.
7
INSTALLATION
Ideal airtherm - Air Source Heat Pump - Installation
PLUMBING - PIPEWORK
a. Ideal heat pumps have water ow and return connections as
follows:
· The airtherm 4.5 and 9 models have ¾” BSP parallel,
male threads
· The airtherm 12 has 1” BSP, parallel, male threads
b. Couplings suitable for disconnection should be installed
with isolating valves on the ow and return of the heat pump
to ease installation and maintenance. During the initial
installation, these should be the last connections made so
as to avoid any stresses on the unit connections.
c. A drain valve or plug should be tted to the lower pipe to
facilitate drain down for servicing.
d. The condensate drain at the base of the unit collects the
condensation from the evaporator ns. This should be run
away to waste from the ¾” PVC pipe on the side of the heat
pump. The routing of the drain must be made to allow a
minimum fall of 1 in 20 away from the unit, throughout its
length.
e. Do not allow pipe work to run in front of service panels.
f. All pipe work must be adequately supported with allowance
for expansion/contraction and should be insulated to avoid
unnecessary heat loss.
a. The Ideal air source heat pump is normally designed to
operate with a buffer tank which prevents short cycling
during normal operation and provides a thermal store to aid
defrost of the heat pump. The size of the buffer tank needed
varies with the size of the ASHP unit as shown below.
Refer to Page 31-33 for addition information
b. Where the ASHP is required to supply domestic hot water, a
special DHW cylinder (Ideal cylinder) should be purchased
with each air to water heat pump. These cylinders have
a larger primary coil compared to standard cylinders and
are supplied with a special tank thermostat. An immersion
heater is tted for back-up DHW heating and must contain a
built in thermostat.
c. Where indirect pressurised cylinders are tted, they
should be installed in compliance with the relevant Water
Regulations and Building Regulations.
HEAT PUMP BUFFER TANK CAPACITY
airtherm 4.5 50 litres
airtherm 9 95 litres
airtherm 12 150 litres
PLUMBING - BUFFER TANK AND HOT WATER CYLINDERS
8
INSTALLATION
Ideal airtherm - Air Source Heat Pump - Installation
a. A separately fused single phase supply is required. With all
power switched off, remove the electrics access panel to
gain access to the terminals in the electric box. The supply
cable, entering the unit through knock outs in the panel, can
then be fed through to connect into the live/neutral/earth
terminals.
b. An MCB type C or D or correctly rated fuse must be used.
(Refer to data sheet on page 17 of this manual).
c. A local isolator should be tted within 2 feet of the unit
to comply with I.E.E. regulations. Power to the unit is
indicated by the red indicator light on the console (mains
lamp).
d. A separate fused spur is normally used to supply the central
heating programmer and controls.
e. There are 10 connections to be made between the Ideal
heat pump and the control wiring centre. A multi core cable
with sufcient capacity will need to be provided and installed.
In most cases a 12 core 0.5mm control cable is used.
f. The unit may be live even when the mains lamp is off
ELECTRICAL
ELECTRICAL CONNECTIONS
a. The electrical connections diagrams are on pages 9 and 10
of this manual.
b. The wiring junction box is located behind the access panel
below the unit’s control panel
c. For the heat pump to operate, you must have a live signal
into terminal 9 (space heating) and terminal 1 (DHW).
INTERNAL WIRING
a. Internal wiring diagrams are on pages 11 and 12 of this
manual.
b. External wiring will depend on the heating system design
and is found on pages 22 & 24 of this manual.
due to live feeds from the external control system. The
‘programmer live’ light on the control panel conrms the
presence of a supply. (See diagram page 13).
g. The heat pump can operate in one of two modes, either set
as supplied, with the unit biased to hot water, or with no bias
for hot water or heating.
h. Ideal Boilers would always recommend a system with the
heating biased to hot water. However if room heating and
hot water heating are required at the same time, the link
between terminals 11 and 12 should then be tted. There is
then no bias between room heating and hot water heating.
Notes:-
i. Where the link is tted the unit will deliver 65ºC ow
temperature during periods of DHW demand and this
must be considered at system design with consideration
to this temperature feeding radiators or under oor
heating at these times.
ii. The link cannot be tted when the heat pump is plumbed
in to a ‘W Plan’ system.
9
INSTALLATION
Ideal airtherm - Air Source Heat Pump - Installation
ELECTRICAL CONNECTIONS IDEAL AIRTHERM 4.5 & 9
LIVE GO SIGNAL FOR HEATING PUMP W/Y PLAN ONLY (OUT)
SEE ELECTRICAL SECTION (PAGE 8)
CONTROL LIVE (OUT) - (CALOREX
TEST TERMINAL)
LIVE OUT SPACE HEATING ZONE VALVE
LIVE GO SIGNAL FOR DHW (IN)
COMPRESSOR 'C'
COMPRESSOR 'R'
COMPRESSOR 'S'
DEFROST VALVE
DEFROST VALVE
FAN N
FAN L
MAINS IN L
MAINS IN N
ROOM HEATING (OUT)
BYPASS ROOM HEATING (OUT)
VALVE 3
230/240V
DEFROST
VALVE
LINK FOR SIMULTANEOUS
HEATING AND HOT WATER
LIVE GO SIGNAL FOR HEATING (IN)
PROGRAMMER DHW PERIOD (IN)
BUFFER TANK HEATING DEMAND (IN)
LIVE GO SIGNAL FOR DHW (OUT)
NEUTRAL
NEUTRAL
PROGRAMMER SIGNAL (IN)
LIVE FEED CONNECTION (Out) (Immersion)
SWITCH LIVE CONNETION (In) (Immersion heater)
HEATING VALVE Y PLAN (OUT)
1 2
16
L N 3
4 5 6
7 8 9 101112
ETH
ETH
13 14
15 17
42 9202 12 2281 91 30 32 33
MAKE EARTH
CONNECTION HERE
Connect to:- Connect to:-
Heat Pump
Terminal
Connections
S Plan Connections AW45002/AW9002
External Wiring Connections
W Plan Connections AW45002/AW9002
External Wiring Connections
Notes
Live
Neutral
Earth
Mains Pow er Supply (Earth Stud)
1 Live Go f or Programmer for DHW 18 18
2 Neutral 19 19
3 Earth 20 20
4 Live Out Space Heating
5 Live Out Defrost 23 23
6 Neutral
7 Earth
8 Programmer Live Calorex Test Terminal
9 Live Go f rom Programmer for Space Heating 16 16
10 Live Out Space Hea
ting Zone Valve 17 17
11 Link for Simultaneous Space Heating / DHW
12 Link for Simultaneous Space Heating / DHW
13 Live Out DHW Zone Valve 7
14 Live in from Programmer for DHW Time Clock 11 11
15 Buff er Tank Stat / Ambient Stat Live in (DHW Only) 22 22
16-23 Internal Connections
24 Live Out Circulating Pump 7
29 Zone Heating Valve (Live out Y Plan Only)
30 Live in from Programmer (Programmer Live Lamp) 2 2
Live Feed Connection (Out) (Immersion)32
Switch live Connection (In) (Immersion heater)33
24
25
Defrost
Terminals
Add link if
Required
Mains
Pow er Supply
10
INSTALLATION
Ideal airtherm - Air Source Heat Pump - Installation
ELECTRICAL CONNECTIONS IDEAL AIRTHERM 12
Connect to:- Connect to:-
Heat Pump
Terminal
Connections
S Plan Connections AW12002 External
Wiring Connections
W Plan Connections AW12002 External
Wiring Connections
Notes
Live
Neutral
Earth
Mains Pow er Supply (Earth Stud)
1 Live Go for Programmer f or DHW 18 18
2 Neutral 19 19
3 Earth 20 20
4 Live Out Space Heating
5 Live Out Defros t 23 23
6 Neutral
7 Earth
8 Programmer Live Calorex Test Terminal
9 Live Go from Programmer for Spac e Heating 16 16
10 Live Out Space Heating Zone Valve 17 17
11 Link
for Simultaneous Space Heating / DHW
12 Link for Simultaneous Space Heating / DHW
13 Live Out DHW Zone Valve 7
14 Live in from Programmer f or DHW Time Clock 11 11
15 Buer Tank Stat / Ambient Stat Live in (DHW Only) 22 22
16-23 Internal Connections
24 Live Out Circulating Pump 7
29 Zone Heating Valve (Live out Y Plan Only)
30 Live in from Programmer ( Programmer Live Lamp) 2 2
31 Internal Connection
Defrost
Terminals
Add link if
Required
Mains Pow er Supply
LIVE GO SIGNAL FOR HEATING PUMP W AND Y PLAN ONLY (OUT)
COMPRESSOR 1 'C'
MAINS IN L
MAINS IN N
LIVE GO SIGNAL FOR DHW (IN)
LINK FOR SIMULTANEOUS
HEATING AND HOT WATER
ROOM HEATING (OUT)
BYPASS ROOM HEATING (OUT)
VALVE 3
230/240V
(DEFROST
VALVE)
COMPRESSOR 1 'R'
COMPRESSOR 1 'S'
REVERSING VALVE
REVERSING VALVE
FAN N
FAN L
COMPRESSOR 2 'C'
COMPRESSOR 2 'R'
COMPRESSOR 2 'S'
DEFROST VALVE
DEFROST VALVE
PROGRAMMER WATER PERIOD (IN)
BUFFER TANK HEATING DEMAND (IN)
LIVE OUT SPACE HEATING ZONE VALVE
LIVE GO SIGNAL FOR HEATING (OUT)
VALVE 1 LIVE GO SIGNAL FOR DHW (OUT)
PROGRAMMER SIGNAL (IN)
HEATING VALVE Y PLAN (OUT)
CONTROL LIVE (OUT) IDEAL
TEST TERMINAL
NEUTRAL
LIQUID LINE SHUT OFF
24 29 30
25
L N
1
2
3 4 5 6 7 8 9 101112
ETH
ETH
13 14
15 17 18 20
21 22 23
26 27 28
31
A1 15 Y1
16 18 A2
32 33
16 19
4
MAKE EARTH
CONNECTION
HERE
LIVE FEED CONNECTION (Out) (Immersion)
SWITCH LIVE CONNETION (In) (Immersion heater)
SEE ELECTRICAL SECTION (PAGE 8)
Live Feed Connection (Out) (Immersion)32
Switch live Connection (In) (Immersion heater)33
24
25
11
INSTALLATION
Ideal airtherm - Air Source Heat Pump - Installation
INTERNAL MACHINE CIRCUIT DIAGRAM - AIRTHERM 4.5 AND 9
L
COMPRESSOR
1
TB 11
TB 12
TB 10
TB 1
TB
2
TB
6
3
5 2
8
A2
A2A1
A1
R2
R2
R2
R5
R5
7
4
4
7
R2
1
2
A2
A1
R1
SMART
STARTER
COMPRESSOR 1
SMART STARTER
COMPRESSOR 1
LINK FOR SIMULTANEOUS
HOT WATER AND HEATING
RUN
CAP
ON
N
L1
R
N
S
RC
C H
HP SWITCH
400PSI AUTO RESET
DIG STAT
LIVE GO SIGNAL
FOR HOT WATER
NEUTRAL
1
9
MAINS
LAMP
5A
FUSE
NEUTRAL
(RED)
LIVE GO SIGNAL
FOR HEATING
DEFROST
VALVE
DEFROST LAMP
FAN
FAN CAP
(GREEN)
2019
21 22
TB 4
TB 5
BYPASS ROOM
HEATING
ROOM HEATING
N
TB 9
LIVE GO SIGNAL
FROM ROOM STAT
FOR HEATING
R3
A1
A2
R7
A1
A2
R8
8 5
9 6
R7
8 5
R7
9 3
TB14
R8
A1
A2
TB15
BUFFER
TANK
HEATING
DEMAND
PROGRAMMED
TIMED
WATER
PERIOD
R3
4
7
1
R6
8
2
5
9
3
TB13
LIVE GO SIGNAL
FOR WATER HEATING
FROM STAT DEMAND
R7
7 4
R8
7 1
4 7
R6
1
R3
9 6
R6
R8
A2A1
R6
A2A1
R4
7 4
16 17 18
6
TB
24
ELECTRIC BOX
EARTH STUD
LIVE GO SIGNAL
FOR HEATING PUMP
ON Y AND W PLAN ONLY
9 6
TB29 TB30
R4
R4
PROGRAMMER LIVE PRESENT
(RED)
TO Y PLAN
HEATING
VALVE
FROM
PROGRAMMER
4 7
1
3
9
6
PF
CAP
RESISTOR
100 OHM
R9R9
214
3
DEFROST
THERMOSTAT
R1
7
4
3
5
OUT1
C
H
HP SWITCH 430PSI
FAULT
LAMP
(AMBER)
PROBE
10 12
R4
8
5
TECNOLOGIC
(N/O)
(N/O)(N/C) (COM) (COM)
(COM) (N/O)
(N/C)
(N/O)
(COM)
(COM) (COM)
(N/O) (N/O)
(N/C) (N/C)
(N/O) (COM)
(COM)
(N/O)
(N/O)
(N/C)
(COM) (COM) (N/C)
(N/C)
(COM)
(COM)
(N/O) (N/C)
(N/C)
(N/C)
(N/O)
(N/O)
(N/O)
(N/O)
(COM)
(COM)
(COM)
(COM)
(COM)
(COM)
(N/C)
(N/O)
(N/O) (COM)
(COM)
(COM)(N/O)
(N/O)
(N/O) (N/C)
(N/C)
(COM)
(COM)
(COM)
(N/O)
BREAKS TO 'L' ON
PRESSURE RISING
BREAKS TO 'L' ON
PRESSURE RISING
C
R
S
A2
A1
R9
DIG STAT
2 STAGE
MAKE ON FALL
SAFETY WARNING
WITH BUFFER TANK THERMOSTATIC IMMERSION
HEATING. THE IMMERSION THERMOSTAT MUST BE
WIRED IN SO THAT IT CUTS OUT IMMERSION
HEATER ON OVER TEMPERATURE, MAX SETTING
55 deg C
A2
A1
R10
33 32
VOLT FREE TERMINALS
FOR BUFFER TANK
IMMERSION HEATER
(Thermostatic type)
AMBIENT STAT
MAKE ON
LOW TEMP
-2ºC to 12ºC
6
4
6
8
OUT2
P
1
(N/O)
(COM)
(N/O)
(N/O)
(COM)
9
6
(N/O)
(COM)
R1
TB
8
R5
6 9
SMART STARTER BUILT IN DELAYS
1. ON POWER UP/INTERRUPTION
OR GO SIGNAL OFF COMPRESSOR
MOTOR DOES NOT START UNTIL 3
MINUTES HAVE ELAPSED.
2. IF COMPRESSOR MOTOR DOES
NOT START A FURTHER 5 MINUTES
NEED TO ELAPSE BEFORE
RESTART BY SMART STARTER IS
ATTEMPTED.
P
2
(N/C)
(COM)
1
TB 34
TB 35
TB 36
(N/O)
ABOVE 12ºC
AMBIENT AIR
THERMOSTAT OPTION
RANGE -2º TO +12ºC
15A MAX
SWITCHING AC1
12
INSTALLATION
Ideal airtherm - Air Source Heat Pump - Installation
INTERNAL MACHINE CIRCUIT DIAGRAM - AIRTHERM 12
SAFETY WARNING
WITH BUFFER TANK THERMOSTATIC IMMERSION
HEATING. THE IMMERSION THERMOSTAT MUST BE
WIRED IN SO THAT IT CUTS OUT IMMERSION
HEATER ON OVER TEMPERATURE, MAX SETTING
55 deg C
L
N
22
24
19
21
7
4
9
6
COMPRESSOR
1
COMPRESSOR
2
TB 9
TB 11
TB 12
TB 10
TB 1
TB
2
TB
6
3
6
5
2
8
A1A2
R2
R2
4
7
R2
R4
A2 A1
R4 R4
A2
A1
R1
2 BCM1 BCM
4 MIN
DELAY ON
TIMER
SMART
STARTER
COMPRESSOR
1
SMART STARTER
COMPRESSOR 2
SMART STARTER
COMPRESSOR 1
SMART
STARTER
COMPRESSOR
2
RUN
CAP
RUN
CAP
ON ON
NN
L1
L1
R
R
N
N S
S
RC
RC
C
H
C H
HP SWITCH
400psig
AUTO-RESET
HP
SWITCH
430psig MANUAL RESET
DIG STAT
DIG STAT
3 STAGE
MAKE ON
FALL
OUT1 OUT2
LIVE GO SIGNAL
FOR HOT WATER
LIVE GO
SIGNAL
FROM ROOM STAT
NEUTRAL
NEUTRAL
LIVE GO SIGNAL
FOR HEATING
FAULT
LAMP
MAINS
LAMP
(RED)
(AMBER)
9
13
14
LINK FOR SIMULTANEOUS
HOT WATER AND HEATING
DEFROST
VALVE
DEFROST LAMP
FAN
FAN CAP
(GREEN)
5AFUSE
BREAKS ON
COMPRESSOR
DISCHARGE PIPE
TEMP ABOVE
115 DEG
P
1
1 3
TB 4
TB 5
BYPASS
ROOM
HEATING
ROOM
HEATING
R6
A1 A2
9
3
R6
R3
A1
A2
R3
4
7
1
R7
7 4
15
18
A1
A2
R5
A1
A2
R5 R5
9
6
7
4
PROBE
4 7
R6
R6
8
2
5
R7
A1
A2
R3
9 6
R8
8 5R89 6
R7
8 5R79 3
TB 14
TB
8
1
R8
7 1
R8
A1
A2
TB 15
TB
13
LIVE GO SIGNAL
FOR WATER HEATING
BUFFER TANK
HEATING
DEMAND
PROGRAMMED
TIMED
WATER
PERIOD
FROM STAT DEMAND
7 4
R9
A1 A2
(SOPAC
JAEGER)
(1)
(2)
TECASA
R5
8
5
ELEC
BOX
EARTH STUD
TB
24
LIVE GO SIGNAL
FOR HEATING PUMP
ON Y AND W PLAN ONLY
9 6
TB
29
TB
30
R9
R9
PROGRAMMER LIVE PRESENT
(RED)
TO Y PLAN
HEATING
VALVE
FROM
PROGRAMMER
214
3
DEFROST
THERMOSTAT
R1
7
4
4 7
1
3
9 6
PF
CAP
RESISTOR
100 OHM
R11R11
A2
A1
R10
A2
A1
R11
R2
17
18
OUT3
A2
A1
R12
VOLT FREE
TERMS FOR
BUFFER TANK
IMMERSION
HEATER
(Thermostatic type)
AMBIENT STAT
-2ºC to +12ºC
MAKE ON
LOW TEMP
6
4
TRANSFORMER
230V
12V
R9
8
5
1
MAKES ON
SUCTION TEMP
ABOVE -5 DEG
C
L
ELEC BOX
EARTH STUD
LIQUID
LINE
SHUT OFF
VALVE
H
LIQUID
LINE
SHUT OFF
VALVE
(5T)
(3T)
1AFUSE
P
1
SUPPLY
(COM)
(COM)
(N/C)
(N/O)
(N/O)
(N/O)
(COM)
(COM)
(COM)
(N/C)
(COM)(N/O)
(COM)
(N/C)
(COM)
(COM)
(N/O)
(N/O)
(N/C)
(COM)
(COM)
(N/O)
(N/O)
(COM)
(COM)
(N/C)(N/C)
(N/C)
(COM)
(COM)
(COM)
(N/O)
(N/O)
(COM)
(COM) (COM)
4 7
1
3
9
6
PF
CAP
RESISTOR
100 OHM
R10R10
(COM) (COM)
(N/C)
(N/C)
(N/C)
(N/C)
(COM)(COM)
(COM)
(COM)(COM)
(COM)
(COM)
(COM)
(N/O)
(N/O)(N/O)
(N/O)
(N/O)
(N/O)
(N/O)
(N/O) (N/O)
(N/O)
(COM)
(N/O)
(COM)
(N/C)
(N/O) (N/O)
(N/C)
FAN ELECTRICAL
CONNECTIONS
N PE L
BROWN
BLUE
GRN/YEL
TWTW N
L
WHITE 0,5mm
WIRE
LINK IN TERMINAL
BOX
TO BE
ADDED
R1
9
6
(COM)
(N/O)
19
20
21
16
17
18
26
25
2827
32
23
33
31
22
SMART STARTER BUILT IN DELAYS
1. ON POWER UP/INTERRUPTION OR
GO SIGNAL OFF COMPRESSOR
MOTOR DOES NOT START UNTIL 3
MINUTES HAVE ELAPSED.
2. IF COMPRESSOR MOTOR DOES
NOT START A FURTHER 5 MINUTES
NEED TO ELAPSE BEFORE RESTART
BY SMART STARTER IS ATTEMPTED.
SEE NOTE ABOVE
15A MAX SWITCHING
AC1
P
2
(N/C)
(COM)
1
TB 34
TB 35
TB 36
(N/O)
ABOVE 12ºC
AMBIENT AIR THERMOSTAT
OPTION RANGE -2ºC to 12ºC
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