Zodiac Heat Line 20 User manual

H0360800.E - 2021/01
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www.zodiac.com
Heat Line EN
Instructions for installation and use - English
Heat exchanger
Translation of the original instructions in french

1
WARNINGS
Carefully read the instrucons in this manual before using the unit.
• Before handling the appliance, it is vital that you read this installaon and user
manual, as well as the "Warranes" booklet delivered with the appliance. Failure
to do so may result in material damage or serious or fatal injury and will void the
warranty.
• Keep and pass on these documents for reference during the appliance's service life.
• The distribuon or modicaon of this document in any way is prohibited, without
prior authorisaon from the manufacturer.
• The manufacturer is constantly developing its products to improve their quality.
The informaon contained herein may therefore be modied without noce.
GENERAL WARNINGS
• Failure to respect the warnings may cause serious damage to the pool equipment
or cause serious injury, even death.
• Only a person qualied in the technical elds concerned (electricity, hydraulics
or refrigeraon) is authorised to carry out maintenance or repair work on the
appliance. The qualied technician working on the appliance must use/wear
personal protecve equipment (such as safety goggles and protecve gloves, etc.)
in order to reduce the risk of injury occurring when working on the appliance.
• Before handling the appliance, check that it is switched o and isolated.
• The appliance is intended to be used for pools and spas for a specic purpose; it
must not be used for any purpose other than that for which it was designed.
• This appliance must not be used by children under 3 or by adults whose reduced
physical, sensory or mental capabilies, or whose lack of experience and knowledge,
might cause a hazard, unless they have been correctly instructed to understand the
safe use and hazards involved and are adequately supervised.
• This appliance is not intended for use by individuals (including children) with
impaired physical, sensorial or mental abilies, or persons lacking in knowledge
and experience, unless they receive supervision or prior instrucons on using the
appliance from a person responsible for their safety. Children must be supervised
to ensure that they do not play with the appliance.
• This appliance should not be cleaned or maintained by children without supervision.
• The appliance must be installed according to the manufacturer’s instrucons and
in compliance with local and naonal standards.
• The installer is responsible for installing the appliance and for compliance with
naonal installaon regulaons. Under no circumstances may the manufacturer
be held liable in the event of failure to comply with applicable local installaon
standards.
• For any work other than the simple user maintenance described in this manual, the
product should be referred to a qualied professional.
• If the appliance suers a malfuncon, do not try to repair it yourself; instead contact
a qualied technician.
• Refer to the warranty condions for details of the permied water balance values
for operang the appliance.
• Deacvang, eliminang or by-passing any of the safety mechanisms integrated
into the appliance shall automacally void the warranty, in addion to the use of
spare parts manufactured by unauthorised third-party manufacturers.
• This appliance is not to be used for a potable water supply.

2
WARNINGS ASSOCIATED WITH ELECTRICAL APPLIANCES
• The power supply to the appliance must be protected by a dedicated 30 mA Residual
Current Device (RCD), complying with the standards and regulaons in force in the
country in which it is installed.
• Do not use any extension lead when connecng the appliance; connect the
appliance directly to a suitable power supply.
• Before carrying out any operaons, check that:
- The required input voltage indicated on the appliance informaon plate
corresponds to the mains voltage;
- The mains supply is compable with the appliance's electricity needs and is
correctly grounded.
• In the event of abnormal operaon or the release of odours from the appliance,
turn it o immediately, unplug it from its power supply and contact a professional.
• Before servicing or performing maintenance on the appliance, check that it is
powered o and completely disconnected from the power supply.
• Do not disconnect and reconnect the appliance to the power supply when in
operaon.
• Do not pull on the power cord to disconnect it from the power supply.
• If the power cord is damaged, it must be replaced by the manufacturer, an
authorised representave or a repair facility only.
• Do not perform maintenance or servicing operaons on the appliance with wet
hands or if the appliance is wet.
• Before connecng the appliance to the power supply, check that the connecon
unit or socket to which the appliance will be connected is in good condion and
shows no signs of damage or rust.
• For any component or sub-assembly containing a baery: do not recharge or
dismantle the baery, or throw it into a re. Do not expose it to high temperatures
or direct sunlight.
• In stormy weather, disconnect the appliance from the power supply to prevent it
from suering lightning damage.
• Do not immerse the appliance in water or mud.
Recycling
This symbol is required by the European direcve DEEE 2012/19/EU (direcve on waste electrical and
electronic equipment) and means that your appliance must not be thrown into a normal bin. It will be
selecvely collected for the purpose of reuse, recycling or transformaon. If it contains any substances
that may be harmful to the environment, these will be eliminated or neutralised. Contact your retailer for
recycling informaon.
EN

3
CONTENTS
❶ Specicaons 4
1.1 I Descripon 4
1.2 I Technical specicaons 4
1.3 I Dimensions and marking 5
❷ Installaon 6
2.1 I Selecng the locaon 6
2.2 I Hydraulic connecons 7
2.3 I Electricity supply connecons (depending on the model) 8
❸ Use 9
3.1 I Operang principle 9
3.2 I User interface presentaon (depending on the model) 9
3.3 I Operaon 10
3.4 I Addional funcons 11
❹ Maintenance 12
4.1 I Winterising 12
4.2 I Maintenance 12
❺ Troubleshoong 13
5.1 I Appliance behaviour 13
5.2 I Error code display 14
5.3 I Replacing the switch box fuse (depending on the model) 14
5.4 I Wiring diagram 15
Tip: to make it easier to contact the retailer
• Write down the retailer's contact details to help you nd them more easily and ll in the "product"
informaon on the back of the manual: the retailer will ask for this informaon.

4
❶ Specicaons
1.1 I Descripon
or or
Heat Line Plus
Heat Line Plus without circulang pump
Bare Heat Line
1.2 I Technical specicaons
Heat Line 20 40 70
Power with primary circuit at 90°C (kW) 20 40 70
Power with primary circuit at 60°C (kW) 8.5 26 26
Power with primary circuit at 45°C (kW) 4 8 14
Primary circuit ow rate (m³/h) 0.9 1.7 3
Secondary circuit ow rate (m³/h) 10 15 20
Primary circuit head loss (bar) 0.015 0.02 0.03
Secondary circuit head loss (bar) 0.05 0.08 0.1
Primary connecon Ø 26/34 female, screw type (Heat Line Plus and without circulang pump)
Ø 26/34 male, screw type (Bare Heat Line)
Secondary connecon PVC Ø50 or Ø63
Primary circuit operang temperature
(°C) 45 - 90
Secondary circuit operang temperature
(°C) 2 - 40
Primary circuit service pressure 200 000 Pa
Primary circuit maximum pressure 300 000 Pa
Absorbed power 33 W
Electrical characteriscs (Heat Line Plus and Heat Line without circulang pump)
Heat Line 20 40 70
Voltage 230V to a 2-pin+Earth socket
~ 50 Hz
Protecon rang IP44
Characteriscs of the circulang pump only
Heat Line Plus 20 40 70
Spacer 130 mm
Intensity 0.36 A
Power 33 W
EN

5
1.3 I Dimensions and marking
Front
Heat Line 20-40 70
535 mm 665 mm
198 mm 328 mm
Heat Line Plus with
circulang pump Plus without circulang pump Bare
Mul-tube exchanger body
½ union PVC connector Ø63 to be glued
Primary circuit drainage cap
Glove nger
Regulaon sensor
Circulang pump
Exchanger body aachment
Switch box aachment
Male/male Ø26/34 nipple
Check valve
Cap
Booster + ow switch

6
❷ Installaon
2.1 I Selecng the locaon
• The appliance must be installed in a technical room venlated, dry and without stored pool
treatment products.
• The appliance must be installed before any water treatment system.
• Install the appliance as close as possible to the heang source (boiler, heat pump, geothermal, solar-powered heang,
etc.),
• If the appliance cannot be installed beside the heang source:
- Provide for the dimensioning of the pipes and primary and secondary circuits in relaon to the water ow rate, the
losses of load and the distance, and insulate them thermally.
- Install a more powerful circulang pump (contact a qualied professional for its dimensioning).
• If the exchanger is a long way from the lter, for the pool circuit use a system of Ø50 or Ø63 pipes (if the overall length
of the circuit is greater than 30 metres). If the pipes are installed underground, they should be in protecve sleeves.
• Preferably, the exchanger should be installed at the low point so that it is always full of water.
• The water treatment system must be installed at a low point to avoid chlorine being returned to the exchanger.
• Leave at least 80 cm free space around the appliance to facilitate its installaon and maintenance,
• The pipes must not be supported by the exchanger.
• The appliance must be secured horizontally to the wall of the technical room:
- Bare Heat Line: using brackets (not included).
- Heat Line Plus and without circulang pump: using the holes at the back of the switch box and 4 screws (not
included).
IMPORTANT: Do not aach the appliance using adhesive tape.
Dimensions for aachment of Heat Line Plus and Heat Line without circulang pump
EN

7
2.2 I Hydraulic connecons
• Respect the hydraulic connecon direcon (see the indicaons on the exchanger tank).
• Correctly ghten the hydraulic connecons and check for leaks.
• Check that the pipe system is cleaned before connecng anything.
: Pool water inlet valve
: Pool bypass valve
: Pool water outlet valve
: Heang water inlet valve
: Heang water outlet valve
: Exchanger body
: Pool circuit secondary)
: Heang circuit (primary)
: Circulang pump
: Automac purge
Tip: calorie exchange opmisaon
• The water from the heang source must be at constant temperature.
• Respect the water ow direcon in the exchanger. If the installaon requires it, you may reverse the
pool's water circulaon direcon in the exchanger, see § « 2.2.3 Adapng the heat exchanger to the
direcon of water ow (depending on the model) ».
2.2.1 Connecon of the heang system connecon (i.e. primary circuit)
• The primary circuit's spur must be upstream of any valves or pumps.
• Bare Heat Line: if the heang source is equipped with a circulang pump, an accumulator
or relay logic can be added to switch o the circulang pump and the heang source. If this
is not possible, provide a system to prevent any primary circuit water from returning to the
exchanger when there is no water circulang in the secondary circuit.
• The connecon must be:
- Made in insulated pipes,
- Fied with a safety valve (pressure limited to 3 bars) and a correctly-dimensioned expansion chamber,
- Use pipes ed with automac drains at their high points.
2.2.2 Pool system connecon (a.k.a. secondary)
• No 90° bend is to be directly ed to the input or the output of the exchanger.
• Leave at least 25 cm of straight pipe to prevent any chaer of the ow switch armature.
• The connecon must be made:
- Using PVC pipes Ø50 minimum,
- Via a bypass (recommended to simplify maintenance and mandatory if the water ow rate of the pool system is
greater than 22 m³/h).
2.2.3 Adapng the heat exchanger to the direcon of water ow (depending on the model)
• Remove the cover from the switch box and disconnect the regulator's two connectors to remove the cover,
• Unscrew the 4 retaining screws from the switch box's support.
• Rotate the heat exchanger and circulang pump 180 °.
• Posion and secure the switch box support using the 4 retaining screws.
• Reconnect the two connectors to the regulator.
• Reposion the switch box cover and secure it with the screw.

8
2.3 I Electricity supply connecons (depending on the model)
• Incorrectly ghtened terminals may cause the terminal unit to heat up and invalidate the
warranty.
• The appliance must be connected to an earth socket.
• Before any work inside the appliance, you must cut the electricity supply as there is a risk of
electric shock which may cause material damage, serious injury or even death.
• Only a qualied and experienced technician is authorised to carry out cabling work within the
appliance or to replace the power cord.
• The exchanger's electrical supply must be provided through a protecon and circuit breaking device (not supplied)
complying with the standards and regulaons in force in the country where it is installed.
• Electrical protecon: via 30 mA residual-current circuit breaker.
• The power supply must correspond to the voltage indicated on the appliance's informaon plate.
• Use the power cord delivered with the appliance.
• All extension cables or mulsocket connects are prohibited. Request the installaon of a protected power socket near
the appliance from a qualied technician.
• If the power cord is not long enough, it must be replaced by a qualied technician.
• The power cord must not be exposed to elements that are sharp, hot or represent a crush hazard.
• The electrical connecon lines must be xed.
2.3.1 Connecng an external command to supply the primary circuit
• This funcon is provided via the dry contact without polarity "normally open at rest" (maximum intensity 5A under
250Vac 50-60Hz) available on the terminal 19-20 regulator,
• Use a 3G1 cable (secon 1 mm²),
• The wire connected to terminals 19-20 must go through the addional discharge “grommet” (supplied) to be installed
on the base of the box.
Ph: live
N: neutral
F*: protecon fuse
(5A maximum)
C*: addional circulang
pump
V’*: 3-way valve with
mechanical return
CH*: exisng heang source
V’’*: motorised 3-way valve
with two rotaon direcons
KA1*: command relay
* not included
Connecon to a heang source Connecon to a circulang pump
Connecon to a 3-way valve with
mechanical return
Connecon to a motorised 3-way valve
with two rotaon direcons
EN

9
❸ Use
• Never run the circulang pump (depending on the model) without water. The circulang
pump is very quiet when it starts up; you may not hear it running.
3.1 I Operang principle
The heat pump uses the calories (heat) from the home's heang to heat up the pool's water.
The heat is exchanged through a series of pipes: the home's heang water circulates through the exchanger's body and
the pool water circulates through the pipes.
Tips: improve the pool's temperature rise and maintenance
• Cover the pool with a sheet (bubble canopy, canvas, etc.) to prevent heat loss. The closer the heat source
is to the exchanger, and the exchanger is to the pool, the less heat will be lost.
• Ancipate the commissioning of your pool far enough in advance before you use it.
• For the temperature rise, set the ltraon pump to connuous operaon (24/24).
• To maintain the temperature throughout the season, run "automac" circulaon for at least
12 hours/day (the longer this me the longer the appliance will have enough operang range to heat up)
3.2 I User interface presentaon (depending on the model)
Display screen (default: water temperature measured)
"On/o" buon
Value seng buons
Steady Flashing O
"On/o"
“On/o” Appliance powered up /No electrical supply
Heang light Heang in
progress
• Timed before operaon
• No water circulaon in the secondary
circuit (less than 1.1m³/h)
No need for
heang
Tips: using the user interface
• The temperature is regulated by degrees.
• Hold down the buons to scroll through the values quickly.
• The setpoint adjustment range is between 2° and 40°C.
• The maximum temperature may be lowered to protect the pool liner (see § 3.2.1 “Modifying the
maximum setpoint”).
3.2.1 Modifying the maximum setpoint
• Switch o the regulator (the "ON" light goes o and the pool water temperature is displayed),
• Press and simultaneously for 5 seconds: "PA" is displayed,
• Press , then enter the value "80" with or (code to access the "Sengs" menu),
• Press to conrm: "PA" is displayed,
• Press and simultaneously for 5 seconds: "/1" is displayed,
• Press to scroll through each parameter unl "r2" is displayed,
• Press , the current "r2" parameter value is displayed,
• Press or to modify the maximum setpoint value, then press to validate this new value,
• Press the and keys at the same me for 5 seconds to return to the pool water temperature display.

10
3.3 I Operaon
• Never run the circulang pump (depending on the model) without water. The circulang
pump is very quiet when it starts up; you may not hear it running.
• Never run water through the primary circuit when there is no water running through the
secondary circuit.
• The ow rate must be adjusted slowly to avoid hammering.
: Pool water inlet valve (secondary circuit)
: Pool water bypass valve (secondary circuit)
: Pool water outlet valve (secondary circuit)
: Heang water inlet valve (primary circuit)
: Heang water outlet valve (primary circuit)
• Check that the hydraulic connecons are correctly ghtened and that there are no leaks.
• Check that the appliance is stable.
• Posion the valves as follows: valves A and C fully open, valve B closed.
• Start the ltraon pump.
• Check that the pool water is owing through the exchanger,
• Open valves D and E fully,
• Check that the heang circuit is lled and vented,
• Connect the regulaon to the power supply and turn it on,
• Adjust the temperature setpoint..
• Aer the start-up steps for your exchanger:
- Check that there are no leaks,
- Check that the circulang pump stops working in case the setpoint temperature is reduced, the regulaon is
stopped or the ltraon is stopped.
- Check that the exchanger is no longer irrigated with water by the heang circuit when the ltraon is stopped and
that there are no pool water heang requests.
Tip: Tips: choosing the regulaon module for a Bare Heat Line
• It must reference the input temperature of the pool water in the appliance.
• It must give the command to irrigate the primary circuit only if heang is requested and ltraon is
operaonal,
• It must stop irrigang the primary circuit once the pool has reached the desired temperature.
Tip: Restarng the circulang pump aer a long shutdown period
• In the event of a blockage, an indicator lights up (see § « 5.2 I Error code display »). In this case, use a
screwdriver to manually release the blockage through the central hole provided in the circulang pump.
EN

11
3.4 I Addional funcons
3.4.1 Seng the setpoint on Heat Line Plus with and without circulang pump
To display and modify the set point value, press or .
3.4.2 Operaon of the circulang pump on Heat Line Plus
Tip: Choosing the right operang mode
• By default, the circulang pump is programmed to "Proporonal speed 3 pressure". We recommend that
you keep this mode, which is suitable for most installaons.
• If, however, your appliance is close to the boiler, you may lower the speed to speed 1 or 2 (see § « 3.4.2
Operaon of the circulang pump on Heat Line Plus »).
• Press to scroll through the operang modes and the speeds associated with them.
Number of
presses Mode Speed Indicator lights
0
Proporonal pressure
Automac “Auto adapt”
(adapts the pressure and
the ow rate)
11
22
33
4
Constant pressure
Automac “Auto adapt”
(adapts the ow rate)
51
62
73
8
Constant curve
1
92
10 3
• Press to exit the menu.

12
❹ Maintenance
4.1 I Winterising
• Winterising is vital to prevent breakage due to freezing. This is not covered by the warranty.
• To avoid damaging the switch box with condensaon, do not fully cover it.
• Only the plug's gasket ensures water ghtness. Replace it without using hemp.
• To ensure good water ghtness, do not ghten the plug + gasket set excessively and do not
damage the thread.
• Power down the regulaon,
• Cut the water circulaon in the primary and secondary circuits,
• Drain the primary circuit (pay aenon to the water temperature; wait unl it cools down to avoid any risk of burns):
- Close the isolaon valves D and E (see § « 2.2 I Hydraulic connecons »),
-Open the drainage valve,
• Drain the secondary circuit:
- Close valves A and C (see § « 2.2 I Hydraulic connecons »),
- Unscrew the connectors to drain the exchanger,
- Tighten the connectors slightly again when the exchanger is empty.
Tip: Restarng the circulang pump aer a long shutdown period (depending on the model)
• If a blockage occurs, lights appear on the circulang pump, see § « 5.2 I Error code display ».
4.2 I Maintenance
• It is recommended that the appliance undergo general servicing at least on a yearly basis
to ensure proper operaon, maintain performance levels and prevent any possible failures.
These operaons are carried out at the user's expense, by a qualied technician.
• Never disassemble the exchanger body.
4.2.1 Maintenance to be carried out by a qualied technician
• Make sure that the appliance's pipe ngs are property ghtened.
• Only for Heat Line Plus and Heat Line without circulang pump:
- Check the electrical mechanism.
- Check the ground connecon,
- Check that the electrical cables are correctly ghtened and connected and that the switch box is clean.
EN

13
❺ Troubleshoong
• Before you contact the retailer, carry out these few simple checks using the following tables
if a problem occurs.
• If the problem is not resolved, contact your retailer.
• : Acons to be performed by a qualied technician only
5.1 I Appliance behaviour
The appliance
does not start
heang straight
away
• When the setpoint temperature is reached, the appliance stops heang: the water temperature
is higher than or equal to the setpoint temperature.
• When the water ow rate is zero or is not enough, the appliance stops: check that the water is
circulang correctly in the exchanger and that the hydraulic connecons are correct.
• The appliance may have detected an operang fault (see § « 5.2 I Error code display »).
• If you have checked these points and the problem persists: contact your retailer.
The appliance is
not working
• If there is no display, check the supply voltage and the fuse. If necessary, replace it (see §
« 5.3 I Replacing the switch box fuse (depending on the model) »).
• When the setpoint temperature is reached, the appliance stops heang: the water temperature
is higher than or equal to the setpoint temperature.
• When the water ow rate is zero or is not enough, the appliance stops: check that the water is
circulang correctly in the appliance.
• The appliance may have detected an operang fault (see § « 5.2 I Error code display »).
The appliance
is working
but the water
temperature does
not increase
• The appliance may have detected an operang fault (see § « 5.2 I Error code display »).
• Check that the automac lling valve is not stuck in open posion; this will keep supplying cold
water into the pool and will prevent the temperature from rising.
• There is too much heat loss as the air is cool. Install a heat insulated cover on your pool.
• Check that the appliance is the right size for this pool and its environment.
There is noise in
the circuit
• Idenfy whether the noise is coming from the circuit or the circulang pump.
• If the noise is coming from the circuit:
- Air is trapped in the circuit: purge the installaon.
- The water ow rate is too high; reduce the operang speed: (see § « 3.4.2 Operaon of the
circulang pump on Heat Line Plus »).
• If the noise is coming from the circulang pump:
- There is air in the circulang pump; let it run. It will bleed itself.
- The water ow is too low: increase the pressure in the primary circuit and/or check the air
volume in the expansion chamber (if installed).
The pool water
is hoer than
requested
• The circulang pump is not operang correctly: Check that it stops when the setpoint
temperature is reached.
• Another circulang pump is pushing on the primary circuit: provide a solenoid valve on the
outlet of the primary circuit managed by terminals 19-20 (see § « 2.3.1 Connecng an external
command to supply the primary circuit »).
The appliance
trips the circuit
breaker
• Check that the circuit breaker is correctly dimensioned and that the cable secon used is
correct (see § « 1.2 I Technical specicaons »).
• The supply voltage is too low; contact your electricity supplier.

14
5.2 I Error code display
Regulator display Possible causes Soluons
Flashing
The regulaon sensor is out of
service or disconnected Reconnect or change the sensor
Circulang pump
display
(rst LED red) Possible causes Soluons
• The circulang pump has
detected an electrical
problem
• The circulang pump is
defecve
• Check the power supply voltage
• Replace the circulang pump
The circulang pump is
supplied with electricity Check the power supply voltage
The circulang pump is blocked Use a screwdriver to manually release the blockage
through the central hole provided in the circulang pump.
5.3 I Replacing the switch box fuse (depending on the model)
• Turn the appliance o.
• Remove the cover.
• Disconnect the regulator.
• Remove the regulator cover ( ).
• Remove the protecon fuse (T3,15AH250V) ( ).
EN

15
5.4 I Wiring diagram
19-20 Dry command contact "Normally Open" So Pool water regulaon sensor (PTC)
CA Power cable: 2L+E 10/16A 3G1 HL Regulaon thermostat with digital display
CD Flow switch B White
F1 3.15 A-T protecon fuse Bl Blue
GN Black duct M Brown
L1 "On/o" LED NBlack
L2 "REG" LED ashing when med or xed heang
in progress V-J Green - Yellow
M1 Circulang pump motor Earth
S1 “On/O" switch

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Modèle appareil
Appliance model
Numéro de série
Serial number
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