Calorex VPT 12 Quick start guide

V-PAC inverter heat pump
VPT 12,16,22
Owner Installation Manual 1005759 iss 1

21005759 ISS 1
OWNER/INSTALLATION MANUAL
HEALTH AND SAFETY WARNING
This product contains electrical and rotational
equipment. ONLY competent trained people
should work on is device, and must be
isolated electrically before removing access
panels.
This appliance can be used by children from
8 years and above and persons wi reduced
physical, sensory or mental capabilities or
lack of experience and knowledge if ey
have been given supervision or instruction
concerning use of e appliance in a safe way
and understand e hazards involved. Children
should not play wi e appliance. Cleaning
and user maintenance shall not be made by
children wiout supervision.
HEALTH AND SAFETY WARNING

3
1005759 ISS 1
CONTENTS
HEALTH AND SAFETY WARNING ���������������������������2
1�0 FOREWORD ���������������������������������������������������������4
1�1 SAFETY PRECAUTIONS���������������������������������4
1�2� ATTENTION�����������������������������������������������������5
1�3� SAFETY �����������������������������������������������������������5
2�0 ABOUT YOUR HEAT PUMP �������������������������������6
2�1� TRANSPORTATION ���������������������������������������6
2�2� ACCESSORIES������������������������������������������������6
2�3� FEATURES�������������������������������������������������������7
2�4� OPERATING CONDITIONS AND RANGE ����7
2�5� OPERATING MODES �������������������������������������7
3�0 INSTALLATION ����������������������������������������������������8
3�1� POOL WATER CIRCUIT����������������������������������9
3�2 PLUMBING�����������������������������������������������������10
4�0 ELECTROLYTIC CORROSION IN SWIMMING
POOLS�����������������������������������������������������������������������11
4�1 ELECTRIC WIRING AND SUPPLY ���������������11
4�2 CONNECTING THE HEAT PUMP TO THE
POWER SUPPLY ��������������������������������������������������12
4�3 RECOMMENDED ELECTRICAL
INSTALLATION FOR CALOREX HEAT PUMP
WITH SINGLE PHASE WATER PUMP����������������13
5�0 OPERATION OF THE HEAT PUMP ������������������14
5�1 THE HOME SCREEN �������������������������������������14
5�2 OPERATION INSTRUCTIONS ���������������������15
6�0� TESTING ������������������������������������������������������������16
7�0� MAINTENANCE ������������������������������������������������17
8�0� TROUBLE SHOOTING COMMON FAULTS ����17
8�1 HEAT PUMP MALFUNCTION ����������������������18
8�2 PROTECTION CODES �����������������������������������18
8�3 FAULT CODES������������������������������������������������19
9�0 DATA SHEET ������������������������������������������������������20
10�0 WIRING DIAGRAMS ���������������������������������������21
11�0 DIMENSIONS���������������������������������������������������23
12�0 WINTERISATION PROCEDURE ���������������������24
12�1 START UP PROCEDURE AFTER
WINTERISATION ������������������������������������������������������24
13�0 WARRANTY CONDITIONS�����������������������������25

41005759 ISS 1
OWNER/INSTALLATION MANUAL
1�0 FOREWORD
Thank you for choosing is product, which is designed
for quiet and energy ecient operation. It is e ideal
way to heat your pool in an environmentally friendly
way.
1�1 SAFETY PRECAUTIONS
Important safety information is contained in is manual
and on your heater.
Please read and follow all safety advice.
The refrigerant used in is heat pump is R32. This
refrigerant is environmentally friendly, but safety
instructions must be strictly adhered to.
The WARNING sign denotes a hazard. It calls
attention to a procedure or practice, which if not
adhered to could result in injury. Warning signs
and procedures must be complied wi.
The heat pump must be kept
away from sources of fire or
naked flames.
The heat pump must be
installed in well ventilated
area. Closed areas are not
permitted.
Repair and disposal must
be carried out by F-Gas
registered engineers.
Completely de-gas e
refrigerant before any brazing
is performed. Brazing can only
be carried out by technicians
trained to EU 517/2014.

5
1005759 ISS 1
1�2� ATTENTION
Please read e following instructions before installation,
use and maintenance.
• Installation must be carried out by competent
people, in accordance wi is manual.
• A refrigerant leak test must be performed aer
installation.
• Only manufacturers recommended procedures may
be used to defrost, or to accelerate e defrost of
e heat pump, to avoid damage.
• If a repair is required, please contact e nearest
aer-sales service centre.
• To avoid over heating or over cooling set e
desired temperature on e control panel.
• Do not place obstructions at will block air flow
near e inlet or outlet.
• Do not use or store combustible gas or liquids near
e heat pump.
• The heating performance can be improved
by insulating e flow and return pipework. it
is recommended at a cover is used on e
swimming pool to reduce heat losses.
1�3� SAFETY
• Mains power isolator should be out of reach of
children.
• Aer a power cut, when e power supply is
restored, e heat pump will start up.
• Electric storms can damage electronic equipment.
Ideally e heat pump should be switched off at
e mains.
• Risk assessments must be carried out before
maintenance or repairs are started.
• If R32 gas leaks during e installation process, stop
e installation immediately and call e service
centre.

61005759 ISS 1
OWNER/INSTALLATION MANUAL
2�0 ABOUT YOUR HEAT PUMP
2�1� TRANSPORTATION
Always keep e heat pump upright.
Do not li e heat pump by e water inlet or outlet
connections.
(If is is done e titanium heat exchanger inside e
heat pump could be damaged).
2�2� ACCESSORIES
These accessories are provided wi e heat pump.
Water union connectors:
2x 1 1/2, 2x50mm
Drainage kit
4x rubber mounts
X

7
1005759 ISS 1
2�3� FEATURES
• Stepless DC inverter compressor
• EEV Technology (Electronic Equalisation Valve)
• Quick hot gas defrosting wi 4-way valve
• High-eciency twisted titanium heat exchanger
• High pressure and low pressure protection
• So start and wide voltage application
• Stable inverter control system
2�4� OPERATING CONDITIONS AND RANGE
Air temperature operating range: -5-43°C.
Heating temperature setting range: 18°C-40°C
Cooling temperature setting range: 12°C-30°C
2�5� OPERATING MODES
The heat pump has ree modes: Powerful mode,
Silent mode, and Smart mode.
Mode Modes Characteristics
Powerful Powerful mode
Heating Capacity 100%
Fast heating, ideal for initial pool heat up.
Silent Silent mode
Heating Capacity 50%
Quiet operation, ideal for night time operation.
Smart Smart mode
Heating capacity= 25% to 100%
Intelligent optimization for ideal day to day operation.

81005759 ISS 1
OWNER/INSTALLATION MANUAL
3�0 INSTALLATION
Installation must only be attempted by competent
personnel.
Location and dimensions�
The heat pump must be positioned in a well ventilated
area. Minimum distances between e heat pump and
any obstructions are shown below.
• The heat pump must be fixed by M10 bolts to a
concrete base or mounting brackets. These must be
solid and fixed securely. Brackets must be corrosion
proof.
• Do not block inlet or outlet grilles.
Swimming Pool or Spa
>100cm
>250cm
>100cm >100cm
Wall
>100cm >100cm
Wall
Typical inside or plant room
installation.
(Not recommended for long duct
runs).
The plant room must not
be used as an occupied
space.
>300cm
Typical outside installation.

9
1005759 ISS 1
3�1� POOL WATER CIRCUIT
Anti return loop
to be incorporated,
minimum height
100mm above
heat pump
outlet port
(If sanitiser fitted)
Non return
valve
Sanitiser or
chemical dosing
device,
(If fitted)
Aux heater
(If fitted)
Filter Pump
To waste
for
winterising
drain down
100mm
Condensate
water to
waste
Spare port
for winterising
flushing
connection
To waste
Calorex
Heat pump
Pool
Bypass
valve
(Normally
closed)
KEY
Isolation valve
Breakable coupling
Three way valve

10 1005759 ISS 1
OWNER/INSTALLATION MANUAL
IMPORTANT
Before installing e heat pump ensure e
blanking disks are removed from e pool water
in/out connections� These should drop out when
e adaptors are unscrewed�
1. Ensure at bypass is installed and set to achieve
e recommended flow rates stated in e data
sheet.
2. Ensure at e condensate drain kit supplied is
fixed and is drained to a drain or soak-away.
3. Inlet and outlet pipework must be supported to
avoid excessive strain on e connections.
4. Water quality must be maintained as follows:
3�2 PLUMBING
Supported pipework
Water
out
Water
in
Acidity pH pH 7.2 - 7.8
Total Alkalinity, as CaCO3 ppm 80 - 120
Total Hardness, as CaCO3 ppm 150 - 250
Total Dissolved Solids ppm 1000
Maximum Salt Content ppm 35000
Free Chlorine Range ppm 1 - 2 Domestic
Free Chlorine Range ppm 3 - 6 Commercial
Superchlorination max 30ppm for 24 hrs
Bromine ppm 2 - 5
Baquacil ppm 25 - 50
Ozone ppm 0.9 Max
Maximum Copper Content ppm 1
Aquamatic Ionic Purifier ppm 2 Max

11
1005759 ISS 1
Electrolytic corrosion will occur when dissimilar metals
at are in contact wi each oer create a potential
difference between emselves. Sometimes separated
by a conductive substance known as an electrolyte, e
dissimilar metals will create a small voltage (potential
difference) at allows e ions of one material to pass
to e oer.
Just like a battery, ions will pass from e most positive
material to e more negative material.
Anying more an 0.3 volts can cause e most
positive material to degrade.
A swimming pool wi its associated equipment
can create is effect. The pool water being an ideal
electrolyte and components of e filtration circuit,
heating system, steps, lights etc providing e dissimilar
metals needed to complete e circuit.
Whilst ese small voltages are rarely a safety reat,
ey can create premature failure rough corrosion.
Not dissimilar to corrosion rough oxidation, electrolytic
corrosion can cause complete failure of a metallic
material in a very short period of time.
In order to prevent is type of corrosion all metallic
components in contact wi swimming pool water
should be bonded togeer using 10mm² bonding
cable. This includes non-electrical items such as metal
filters, pump strainer boxes, heat exchangers, steps
and handrails. It is highly recommended at bonding
be retrofitted to existing pools, which may not be
protected by is system.
All electrical work to be carried out in accordance wi
l.E.E. regulations, latest issue, or local codes of practice
as applicable.
The machine should be installed in accordance wi
EMC2004/108/EC.
Protected supply fuses or motor type circuit breakers
(Type GU, FAZC) to specified rating, (see below). H.R.C.
fuses are recommended. An isolator which disconnects
all poles must be fitted wiin 2m and in line of sight of
e heat pump.†
All units must be correctly eared- Grounded and an
ear leakage trip installed.
Inconsistent electrical supply
The following voltage limits must not be exceeded.
Failure to achieve e necessary voltages will invalidate
e warranty.
Minimum Maximum
Voltage
Single phase machines 207V 253V
Cycle frequency (50Hz) 47.5Hz 52.5Hz
The voltage must not drop below e above figures
when starting e machine.
Note. This voltage must be available at e heat pump
whilst running.
† Note. The isolator must have a minimum of 3mm air
gap when turned off.
4�0 ELECTROLYTIC CORROSION IN SWIMMING
POOLS
4�1 ELECTRIC WIRING AND SUPPLY

12 1005759 ISS 1
OWNER/INSTALLATION MANUAL
L N
Fuse/MCB
Eared Power
Supply 230V 50Hz
Supply
cord
Distribution box
L N
RCD/
Circuit
Breaker
Remove ese
two screws
Li lower
panel away
P1 P2
Power
terminals
Pump
terminals
Secure cables
using cable
clamps and feed
rough cable
entry points in
machine
Cable clamp
L3
N
Fuses/MCB
Eared Power
Supply 400V 50Hz
L3 N P1 P2
Power
terminals
Pump
terminals
Single phase
Terminals in Heat Pump Electrics enclosure
L2
L1
L2
L1
1
Remove ese
four screws and
remove cover
Two cable
entry points
2
Three phase
Terminals in Heat Pump Electrics enclosure
Cable clamp
Secure cables
using cable
clamps and feed
rough cable
entry points in
machine
Supply
cord
RCD/
Circuit
Breaker
Distribution box
4�2 CONNECTING THE HEAT PUMP TO THE
POWER SUPPLY
Cable entry point Position of terminals

13
1005759 ISS 1
Recommended electrical installation for Calorex heat pump
wi single phase water pump
L
N
L N
N
N L
L
N
P1
P2
CALOREX
Heat pump
Single phase
N L
Single phase
Switched fuse isolator wiin 2m
of heat pump and sized in
accordance wi datasheet
Single phase supply
to suit capacity
Water pump
more an 3/4 HP
Single Phase
Minimum 2 Pole N/O starter
wi overload
and 230V 50Hz coil
rated to suit water pump
L
4�3 RECOMMENDED ELECTRICAL
INSTALLATION FOR CALOREX HEAT PUMP
WITH SINGLE PHASE WATER PUMP

14 1005759 ISS 1
OWNER/INSTALLATION MANUAL
5�0 OPERATION OF THE HEAT PUMP
5�1 THE HOME SCREEN
Mode Down Up
LED display
Smart mode indicator light
Powerful mode indicator light
Powerful Smart Silent
M

88.88
Silent mode indicator light
Power
HEAT
COOL
Heating indicator light
Timer on indicator light
Timer off indicator light
Cooling indicator light
Powerful Smart Silent
M

18.05
HEAT
COOL
Note: When e heat pump is powered off, e display
shows e time.

15
1005759 ISS 1
5�2 OPERATION INSTRUCTIONS
a� Power on�
Press to power e unit on or off. Note. a short
press will return e controller to main menu.
b� Temperature setting�
Press pand qto display and adjust e set
temperature. Press to save settings and return
to main screen.
c� Mode Selection
Press Mto enter mode.
Powerful Powerful mode indicator lamp lit.
Smart Smart mode indicator lamp lit
Silent Silent mode indicator lamp lit
d� Heat mode selection
Press Mto switch between heating and cooling.
Heating= Heating indicator lamp lit and H on display.
Cooling= Cooling indicator lamp lit and C on display
e� Defrosting
1. Automatic defrosting. When machine is defrosting
e heating indicator lamp flashes; aer defrosting e
flashing stops.
2. Forced Defrosting. When machine is heating and
e compressor has been running continuously for 10
minutes. Press pand qtogeer for 5 seconds. e
heating mode lamp flashes and defrost starts. When
defrosting is exited e display returns to normal.
f� Clock Setting
Turn e heat pump off via e . Press Mto
enter e clock settings. Press Mand e hour
flashes. Using e pand qset e hour. Press M
again to make e minutes flash and use e pand
qto set. Press e Monce more to return to e
main display. Press e to turn e heat pumps
back on.
g� Timer Setting
Press and hold e for 5 seconds to enter timer
menu. It will now show e ‘timer on’ time. Press M
and e hour flashes. Use pand qto set e hour.
Press Magain and e minutes flash. Use e p
and qto adjust ese. Press Magain to and it will
now show e ‘timer off’ time. Adjust ese in e
same way as e ‘timer on’. Once complete press M
to save e setting.
h� Cancel timer
There are two ways to cancel e timer settings.
1. Bo e timer on and timer off are set to e same
time.
2. When in e interface for timer settings press and
hold for 5 seconds e to cancel each time
individually. Note. must cancel ‘Timer off’ before ‘timer
on’.

16 1005759 ISS 1
OWNER/INSTALLATION MANUAL
6�0� TESTING
Inspect heat pump before use
• Check at e fan, air inlets and outlets are not
obstructed.
• It is prohibited to install refrigeration pipe or
components in corrosive environment.
• Check at e electric wiring conforms to e
electric wiring diagram and at e machine is
eared.
• Double check at e main power switch is off.
• Check e temperature setting.
a� Machine diagnostics�
To aid machine diagnosis e heat pump can report
on some conditions. These are shown in e table
below. To access ese readings press and hold e
Silent for 5 seconds, and use e pand qto
scroll rough. The first number at is flashing is e
parameter code. Press to return to main
menu.
b�Factory reset
Press and hold e Silent and togeer
for 5 seconds. is enters e customer parameter
menu. Press and hold e Silent and
togeer for 5 seconds again and e reset is done.
The buzzer will sound twice and all parameter
values will change back to eir default values.
QUERY CODE MEANING RANGE
1Water inlet temperature -20~99°C
2Water outlet temperature -20~99°C
3Ambient temperature -20~99°C
4Compressor exhaust gas temperature 0~125°C
5Compressor suction gas temperature -20~99°C
6Evaporator coil temperature -20~99°C
7Condenser coil temperature -20~99°C
8 to 14 Ignored

17
1005759 ISS 1
7�0� MAINTENANCE
Isolate e power supply
to e heat pump before
cleaning, examination or
repair�
Cover e machine body when not in use.
Please clean is machine wi household detergents
or clean water, NEVER use gasoline, inners or any
similar fuel.
Check bolts, cables and connections regularly.
Repair, service and disposal of redundant heat pumps
must be completed by auorised technicians. It is
illegal to allow refrigerant gases to escape to air.
Do not attempt to work on e equipment by yourself.
Improper operation may cause danger.
8�0� TROUBLE SHOOTING COMMON FAULTS
Requirements for service personnel
Any person who is involved wi working on or
breaking into a refrigerant circuit should hold a current
valid certificate from an industry-accredited assessment
auority, F-Gas registered.
Do not attempt to work on e equipment by
yourself�
Strictly comply wi e manufacturer’s requirements
when charging R32 gas. This chapter focuses on
special maintenance requirements for swimming pool
heat pump wi R32 gas. Please refer to e technical
service manual for detailed maintenance operation.
The heat pump must be completely de-gassed before
any brazing. Brazing must only be carried out by
trained personnel.

18 1005759 ISS 1
OWNER/INSTALLATION MANUAL
8�1 HEAT PUMP MALFUNCTION
Fault Reason Solution
Heat pump doesn’t run
No power Wait until e power is restored
Power is switched off Switch on e power
Fuse has blown Check and change e fuse
The breaker is off Check and turn on e breaker
Fan running but wi insucient
heating
Evaporator blocked Remove e obstructions
Air outlet blocked Remove e obstructions
3 minutes start delay Wait for e delay timer to time out
Display normal, but no heating Set temperature too low Set desired heating temperature
3 minutes start delay Wait for e delay timer to time out
Inaccurate switch action.
Stop e machine, and cut off e power supply immediately, en
contact your dealer
The fuse blows frequently or
leakage circuit breaker trips
frequently
If above solutions don’t work, please contact your installer wi detailed information and your model number.
Don’t try to repair it yourself.
8�2 PROTECTION CODES
These codes indicate machine stopping due to external circumstances. These are not faults wi e heat pump.
NO� Display Reason Solution
1 Er 03 No water flow rough e heat pump. Check water circuit and pool pump.
2 Er 04
Frost protection. The heat pump runs in heating mode
for a short time when in standby mode to prevent
frost build up. This does not replace winterisation.
Heat pump will resume standby
once process is completed.
3 Er 21 Ambient temperature is out of range, eier lower
an -5°C or higher an 43°C.
If outside, wait for ambient
conditions to improve (winterisation
may be required). If installed in
a sheltered place, check for air
recirculation.
4 Er 27 The temperature difference between inlet and outlet
water is more an 10°C Check water flow and pool pump.

19
1005759 ISS 1
8�3 FAULT CODES
When e heat pump displays any of ese fault
codes please contact your dealer for advice.
Display Description of fault code
Er 05 High pressure alarm
Er 06 Low pressure alarm
Er 09 Controller communication failure
Er 10 Inverter module communication error
Er 12 High exhaust gas temperature alarm
Er 15 Water inlet temperature sensor failure
Er 16 Evaporator coil temperature sensor failure
Er 18 Exhaust gas temperature sensor failure
Er 19 DC fan motor error
Er 20 Inverter module abnormal error protection
Er 23 Low outlet water temperature protection under cooling mode
Er 29 Compressor suction gas temperature alarm
Er 32 Hight outlet water temperature protection under heat mode
Er 35 Compressor high current protection
Er 42 Condenser coil temperature sensor failure

20 1005759 ISS 1
OWNER/INSTALLATION MANUAL
9�0 DATA SHEET
Model UNITS VPT 12ALX VPT 16ALX VPT 22ALX-W
Performance - Air 27°C Water 27°C RH 80%
Heating capacity 14.1 18.5 24.4
COP Range 18.2-6.28 18.5-6.03 13.5-5.14
Average COP at 50% Speed 10.7 10.8 8.8
Performance - Air 15°C Water 26°C RH 70%
Heating capacity kW 10.64 13.61 17.8
COP Range 8.5-5.11 8.4-5.02 6.2-4.14
Average COP at 50% Speed 6.5 6.4 4.7
Technical Specification
Operating air temperature C -5°C to 43°C
Power supply 230V 1PH
Rated input power kW 0.20-2.24 0.23-3.06 0.75-4.75
Rated input current A 1.21-8.9 1.23-12.0 3.45-19.6
Maximum input current A 12.5 15.5 24.5
Rated RCD
Rated Fuse MCB type C A tba tba tba
Sound level at 10m dB(A) <29 <30 <30
Advised water flow m/h 4.97 6.5 8.98
Water connection mm 1 1/2” and 50mm
Hermetic System
R32 Gas charge g 800 800 1700
Net dimension LxWxH mm 650x650x760 650x650x760 750x750x860
Packed dimension LxWxH mm 670x670x870 670x670x870 770x770x980
Net Weight kg 70 80 95
NOTES
(1) Weight and dimensions nett.
(2) Allow 500mm clearance to service panels.
(3) Minimum air temperature -5°C.
4) Water to have correct balance pH 7.2- 7.8. Free Chlorine 1.0-2.0 ppm domestic, 3.0 - 6.0 commercial.
(5) Dantherm Ltd. reserves the right to change or modify models without prior notice.
(6) Global warming potential (GWP) R32 - 675.