Hayward SUMHEAT HP5131DT3 Service manual

SWIMMING POOL HEAT PUMP UNIT
Installation & Instruction Manual
ISSUMINVR32-RevA
SUMHEAT
FULL INVERTER

Please read attentively and save for future consultation.
This document must be given to the pool owner and should be kept in a safe place.
CONTENTS
1. PREFACE 1
2. SPECIFICATIONS 4
2.1 Technical data for the swimming pool heat pump unit 4
2.2 Operating range 6
2.3 Dimensions 7
3. INSTALLATION AND CONNECTION 8
3.1 Functional Diagram 8
3.2 Heat pump unit 8
3.3 Hydraulic connection 9
3.4 Electrical connection 10
3.5 Initial start-up 12
3.6 Water flow setting 14
4. USER INTERFACE 15
4.1 General presentation 15
4.2 Setting the Date and Time 16
4.3 Timer function settings 16
4.4 Setting and visualisation of the set point 18
4.5 Locking and unlocking the touch screen 19
4.6 SILENT function settings 20
5. MAINTENANCE AND WINTERISING 23
5.1 Maintenance 23
5.2 Winterising 23
6. APPENDIX 24
6.1 Electrical diagrams 24
6.2 Heating priority wiring for monophasic pump 29
6.3 Heating priority wiring for three phases pump 30
6.4 Exploded view and spare parts 32
6.5 Troubleshooting guide 40
6.6 Recording base 43
6.7 Warranty 44

1
1. PREFACE
Thank you for purchasing the Hayward heat pump for swimming pools. The
Hayward SUMHEAT FULL INVERTER heat pump has been designed to strict
manufacturing standards meeting the highest levels of quality required.
Hayward heat pumps offer you exceptional performance throughout your bathing
season by adapting wattage, power usage and noise levels to the heating
requirements of your swimming pool thanks to FULL INVERTER control logic.
Read the instructions in this manual carefully before using the
device.
Hayward heat pumps are designed exclusively to heat swimming pool water; do
not use this equipment for any other purpose.
This manual includes all the necessary information for installation, trouble-shooting
and maintenance.
Read this manual carefully before opening the unit or doing any maintenance work
on it. The manufacturer of this product shall on no account accept any liability for
injury to a user or damage to the unit further to any errors made during installation,
trouble-shooting or unnecessary maintenance. It is particularly important to follow
the instructions given in this manual at all times.
Otherwise the guarantee will be voided.

2
Safety instructions
This device contains R32.
Never use a refrigerant other than R32. Any other gaseous body
mixed with R32 could cause abnormally high pressure and lead
to a failure or pipes bursting and injuring people.
During repairs or maintenance operations, use copper tubes that
comply with Standard EN 12375-1 (May 2020) and the European
Pressure Equipment Directive 97/23 / EC.As the heat pump is
pressurized, never pierce the pipes or attempt any brazing. There
is a risk of explosion.
Never expose the device to flames, sparks or other sources of
ignition. It could explode and cause serious or even fatal injuries.
The heat pump is designed exclusively for installation outside buildings.
•If kept in storage, the heat pump should be kept in a well-ventilated room with
a floor area of more than Amin(m²) as calculated by the following formula:
Amin = (M/(2.5 x 0.22759 x h0))².
M is the quantity of refrigerant in the device in kg, and h0 is the storage height.
If stored no the floor, h0 = 0.6 m.
•The unit must be installed by qualified personnel.
•Do not install the heat pump on a support that risks intensifying the unit's
vibrations.
•Make sure the support provided for the unit is strong enough to bear the weight
of the unit.
•Do not install the heat pump anywhere liable to amplify its noise level or
anywhere where its noise could disturb neighbours.
•All the electrical connections must be fitted by a professional qualified
electrician in accordance with the standards in force in the country of
installation, see §3.4.
•Shut off the main power supply and disconnecting switch before doing any
electrical work. Forgetting to do so could cause electrocution.
•Before installing the unit, check that the earth cable is not cut or disconnected.
1. PREFACE (continued)

3
•Connect and properly tighten the power cable. A loose connection could
damage electrical components.
•Exposing the heat pump to water or a humid atmosphere could cause
electrocution. Be very careful.
•If you detect a fault or any abnormal situation, do not install the heat pump and
contact your dealer immediately.
•All maintenance work should be done at the recommended intervals, as
specified in this manual.
•Repairs must be carried out by qualified personnel.
•Only use OEM spare parts.
•Never use a cleaning method other than the one recommended in this manual.
Important information concerning the refrigerant used
This makes contains fluorinated greenhouse gases regulated by the Kyoto
protocol. Do not release these gases into the atmosphere.
Type of refrigerant: R32
Security unit: A2L
GWP(1) value: 675, based in the 4th report of the IPCC.
The quantity of refrigerant, based on the F-Gas regulation no. 517/2014, is
stated on the unit's rating plate.
Period checks for leaks of refrigerant may be required by European or local
legislation. Please contact your local dealer for more information.
(1) Global warming potential
1. PREFACE (continued)

SUMHEAT
Full Inverter
V / Ph / Hz
Type
Type
kg
teqCO2
/
kW
kW
A
/
kW
kW
/
A
aM
D
A
mm
m3/h
kPa
/
/
/
Ohm
/
mm
/
/
/
Tr/min
Tr/min
dB(A)
dB(A)
mm
kg
HP5171DT3 HP5211DT3 HP5301DT3
220 V - 240 V / 1 h / 50 Hz
HFC - R32 - (CH2F2)
A2L
0,8 1,35 1,65 1,8
0,54 0,91 1,11 1,22
Aucune exigence mais conseillé de façon annuelle
3,65 -- 17,05 6,35 -- 21,47 5,10 -- 24,30 7,74 -- 30,30
0,24 -- 2,47 0,46 -- 2,80 0,37 -- 3,79 0,59 -- 4,98
1,58 -- 10,78 2,81 -- 12,24 2,29 -- 16,57 3,48 -- 21,77
15 -- 6,89 13,66 -- 7,65 13,52 -- 6,41 13,03 -- 6,07
2,87 -- 12,63 4,76 -- 16,49 3,90 -- 18,96 5,53 -- 22,36
0,43 -- 2,41 0,64 -- 2,88 0,62 -- 3,78 0,86 -- 4,67
6,58 -- 5,24 7,49 -- 5,72 6,33 -- 5,01 6,45 -- 4,79
15,5 17,7 22,6 23
16 20 25 25
16 20 25 25
< CMS
50 mm
7,2 9,2 10,5 13,1
8 17 15 46
Mitsubishi Panasonic Panasonic Mitsubishi
Double Rotatif
1
0,95 0,88 0,88 0,49
Axial
1
522 560 560 600
3
DC Inverter
1
600 -- 700 500 -- 700 600 -- 750 500 -- 700
400
49,3 -- 51,8 55,9 -- 58,3 54,6 -- 59,9 56,8 -- 62,5
32,8 -- 35,1 40,3 -- 42,5 39,1 -- 44,4 41,7 -- 47,3
780 x 730 x 868 797 x 777 x 965
846 x 920 x 1024
75 101 101 123
HP5131DT3
0.65
0.44
3,66 -- 13,48
0,27 -- 1,92
1,70 -- 8,40
13.35 -- 6,99
2, -- ,
0,43 -- 2, 1
, -- ,
16
16
Mitsubishi
0,95
522
-- 700
/
/
69
12
4
2. SPECIFICATIONS
2.1 Technical data for the swimming pool heat pump unit
(a) Dry air 27°C - Relative humidity 78% - Water inlet temperature 26°C.
(b) Dry air 15°C - Relative humidity 71% - Water inlet temperature 26°C
Models
Supply voltage
Refrigerant
Security unit
Load
Mass in teqCO2
Leak check frequency
Min--Max heating capacity (a)
Min--Max electric input power
(a)
Min--Max continuous current rating (a)
Max--Min continuous power (COP) (a)
Min--Max heating capacity (b)
Min--Max electric input power
(b)
Max--Min continuous power (COP) (b)
Maximum continuous current
Fuse rating
Circuit-breaker curve D
Starting current
Hydraulic connection
Nominal water flow
(a)
Max. loss of head on water
Compressor
Type
Quantity
Coil resistance at 20°C
Fan
Quantity
Diameter
Number of blades
Motor
Quantity
Rotation speed
Silent mode speed
Sound pressure level at 1 meter
Sound pressure level at 10 meters
Unit's net dimensions (L-W-H)
Weight


HP5211ET3 HP5251ET3 HP5301ET3
380 V - 415 V / 3 ph / 50 Hz
HFC - R32 - (CH2F2)
A2L
1,35 1,65 1,8
0,91 1,11 1,22
Aucune exigence mais conseillé de façon annuelle
kW 6,24 -- 22,10 6,02 -- 24,50 8,12 -- 31,20 7,78--35,45
kW 0,46 -- 3,07 0,41 -- 3,67 0,59 -- 5,08 0,64--6.78
A 1,00 -- 5,10 0,90 -- 5,81 1,21 -- 8,23 0,5--11,0
/ 13,70 -- 7,19 14,53 -- 6,68 13,72 -- 6,14 12,16--5,23
kW 4,84 -- 16,92 4,55 -- 19,55 5,52 -- 23,05 6,40--27,53
kW 0,68 -- 3,10 0,63 -- 3,68 0,79 -- 4,94 0,94--6,65
/ 7,10 -- 5,46 7,18 -- 6,42 6,98 -- 4,66 6,81--4,14
8,7 11,7 13,3
10 12 16
10 12 16
< CMS
50 mm
9,1 10,5 12,6
17 15 46
/ Panasonic Panasonic Mitsubishi Mitsubishi
Double Rotatif
1
Ohm 0,88 0,88 0,49
Axial
1
560 560 600
3
DC Inverter
1
Tr/min 500 -- 700 600 -- 750 500 -- 700 500--750
Tr/min 500 400 400
dB(A) 56,4 -- 61 55,2 -- 59,7 55,6 -- 59,3
dB(A) 40,9 -- 45,4 40,9 -- 44,2 36,1 -- 42,2
797 x 777 x 965 846 x 920 x 1024
101 101 123 123
HP5361ET3
1,9
1,28
14,4
16
16
14,6
23
0,49
600
400
/
/
5
(a) Dry air 27°C - Relative humidity 78% - Water inlet temperature 26°C.
(b) Dry air 15°C - Relative humidity 71% - Water inlet temperature 26°C
2. SPECIFICATIONS (continued)
Models SUMHEAT
Full Inverter
Supply voltage V / Ph / Hz
Refrigerant Type
Security unit Type
Load kg
Mass in teqCO2teqCO2
Leak check frequency /
Min--Max heating capacity (a)
Min--Max electric input power
(a)
Min--Max continuous current rating (a)
Max--Min continuous power (COP) (a)
Min--Max heating capacity (b)
Min--Max electric input power
(b)
Max--Min continuous power (COP) (b)
Maximum continuous current A
Fuse rating aM
Circuit-breaker curve D D
Starting current A
Hydraulic connection mm
Nominal water flow (a) m3/h
Max. loss of head on water kPa
Compressor
Type /
Quantity /
Coil resistance at 20°C
Fan /
Quantity
Diameter mm
Number of blades /
Motor /
Quantity /
Rotation speed
Silent mode speed
Sound pressure level at 1 meter
Sound pressure level at 10 meters
Unit's net dimensions (L-W-H) mm
Weight kg


6
2. SPECIFICATIONS (continued)
2.2 Operating range
Use the swimming pool heat pump unit within the following ranges of
temperature and humidity to ensure safe and efficient operation.
Heating mode Cooling mode
Outside temperature -15°C – +43°C +7°C – +43°C
Water temperature +12°C – +40°C +8°C – +40°C
Relative humidity < 80% < 80%
Setting range from the set point +15°C – +32°C +8°C – +32°C
If the temperature or humidity does not correspond to these conditions,
the security measures could be activated and the swimming pool heat
pump unit may no longer work.
The maximum heating temperature is set at 32°C to prevent damage to
the liners. Hayward cannot be held responsible if used at a temperature
above +32°C.

7
A
B
Ø
C
D
E
F
2. SPECIFICATIONS (continued)
2.3 Dimensions
Models:
HP5131DT3 / HP5171DT3 / HP5211DT3 / HP5251DT3 / HP5301DT3
HP5211ET3 / HP5251ET3 / HP5301ET3 / HP5361ET3
Water inlet Ø 50 mm
Water outlet Ø 50 mm
Unit: mm
Model
Mark
HP5131DT3/
HP5171DT3 HP5211DT3 HP5251DT3 HP5301DT3 HP5211ET3 HP5251ET3 HP5301ET3/
HP5361ET3
A867,5 965 965 1024 965 965 1024
B730 777 777 920 777 777 920
C780 797 797 846 797 797 846
Ø610 650 650 680 650 650 680
D120 120 120 150 120 120 150
E204 204 204 242 204 204 242
F87 85 85 86 85 85 86

8
700 mm 700 mm 700 mm
Place the heat pump outdoors and away from any enclosed technical
space.
Placed in the shade or near an obstacle, the minimum required
distances mentioned below must be respected in order to avoid any risk
of air recirculation and a deficiency in the unit's overall performance.
3. INSTALLATION AND CONNECTION
3.1 Functional Diagram
Water Inlet
valve
Water outlet
valve
Filter
By-pass
valve Pool
Water outlet
Chlorinator cell
(or other treatment)
Pump filtration
Note: The swimming pool heat pump unit is sold without any treatment or
filtration equipment. The components presented in the diagram are
spare parts to be supplied by the installer.
3.2 Heat pump unit
Unit: mm
Air inlet Air inlet Air inlet
Air outletAir outlet

9
3. INSTALLATION AND CONNECTION (continued)
3.3 Hydraulic connection
The unit is supplied with two 50 mm Ø union connections. Connect the water
inlet to the heat pump coming from the filtration group then connect the
water outlet to the heat pump at the water conduit going to the pool. Install a
by-pass valve between the heat pump entrance and exit. (see diagram below).
It is advised to install the unit on a dissociated cement block.
The maximum installation distance between the unit and the swimming
pool is 15 metres.
The total length of the piping to and from the unit is 30 metres.
Insulate both the above ground and buried hydraulic piping.
The heat pump must be installed at a minimum distance from the pool
in compliance with NF C 15-100 (3.5 m from the water for France) or in
compliance with installation standards applicable in other countries.
Do not install the heat pump close to a heat source.
For installation in snowy regions we recommend sheltering the machine
to avoid snow accumulating on the evaporator.
If an automatic distributor or an electrolyser is used, it should be
installed imperatively after the heat pump with the goal of protecting the
titanium condenser against an elevated concentration of chemicals.
Be sure to install the by-pass valve and the supplied union connections
at the water inlet and outlet level in order to simplify purging during
the winter period and to facilitate access when disassembling for
maintenance.
Water inlet Ø 50 mm Water outlet Ø 50 mm

10
3. INSTALLATION AND CONNECTION (continued)
3.4 Electrical connection
Electrical installation and wiring for this equipment must be in
conformity with local installation standards.
Dry contact 7 A max
potential free.
Priority heating function
L N
= =
1 3 4
= = =
2
=
Power supply
230V / 50Hz
K2
Verify that the available electrical power supply and the network
frequency correspond to the required operating current taking into
account the appliance's specific location, and the current required to
supply any other appliance connected to the same circuit.
See the corresponding wiring diagram in the appendix § 6.1.
The connection box is behind the front panel.
•There are three L-N-GND connections for powering single-phase
models.
•Five R-S-T-N-GND connections serve for the power supply of the
three-phase models.
Terminals (1-2) are for controlling filter pump (K2 relay). Terminals (3-4),
normally closed, are for remote on/off control.
230V +/- 10 % 50 Hz 1 Phase
400V +/- 10 % 50 Hz 3 Phases
Check that the phases
balance does not
exceed 2%
F NF C15-100 GB BS7671:1992
D DIN VDE 0100-702 EW EVHS-HD 384-7-702
A ÖVE 8001-4-702 H MSZ 2364-702/1994/MSZ 10-553 1/1990
E UNE 20460-7-702 1993,
RECBT ITC-BT-31 2002
M MSA HD 384-7-702.S2
IRL Wiring Rules + IS HD 384-7-702 PL PN-IEC 60364-7-702:1999
I CEI 64-8/7 CZ CSN 33 2000 7-702
LUX 384-7.702 S2 SK STN 33 2000-7-702
NL NEN 1010-7-702 SLO SIST HD 384-7-702.S2
P RSIUEE TR TS IEC 60364-7-702
Remote A1 On/Off contact
HP5131DT3
HP5171DT3
HP5211DT3
HP5251DT3
HP5301DT3
HP5211ET3
HP5251ET3
HP5301ET3
HP5361ET3




11
3. INSTALLATION AND CONNECTION (continued)
S NT
R
= = ==
1 3 4
= = =
2
=
Power supply
400V 3N / 50Hz
Dry contact 7 A max
potential free.
Priority heating function
The electrical power supply must have, when appropriate, a fuse
protection device like a feed motor (aM) or D curve circuit breaker as
well as a differential circuit breaker 30 mA (see following table).
Use an RO 2V/R 2V or equivalent power cord.
The cables sections are given for a maximum length of 25 m. They
must however be checked and adjusted according to the installation
conditions.
Always shut down the main power supply before opening the electrical
control box.
Models
Power supply V/Ph/Hz
aM type fuse calibre A
Curve D circuit breaker A
Cable section mm2
Models
Power supply V/Ph/Hz
aM type fuse calibre A
Curve D circuit breaker A
Cable section mm2
K2
Remote A1 On/Off contact
HP5171DT3 HP5211DT3 HP5251DT3 HP5301DT3
230V 50Hz 230V 50Hz 230V 50Hz 230V 50Hz
16 20 25 25
16 20 25 25
3G2.5 3G4 3G4 3G4
HP5211ET3 HP5251ET3 HP5301ET3
400V 3N 50Hz 400V 3N 50Hz 400V 3N 50Hz
10 12 16
10 12 16
5G2.5 5G2.5 5G2.5
HP5131DT3
230V 50Hz
16
16
3G2.5
HP5361ET3
400V 3N 50Hz
16
16
5G2.5

  
   

12
3.5 Initial start-up
Start-up procedure - After installation is complete, follow these steps:
1) Rotate the fans by hand to verify that they can turn freely by hand, and
that the turbine is correctly affixed to the motor shaft.
2) Ensure that the unit is connected correctly to the main power supply (see
the wiring diagram in the appendix).
3) Activate the filtration pump.
4) Verify that all water valves are open and that the water flows toward the
unit before switching on the heating or cooling mode.
5) Verify that the drainage hose is correctly affixed and that it causes no
obstructions.
6) Activate the unit power supply, then press the On/Off button on the
control panel.
7) Ensure that the alarm signal ( ) does not light up red.
If necessary see the troubleshooting guide (see § 6.4).
8) Set the water flow using the by-pass valve (see § 3.6 and 2.1), as
provided for by each model, to obtain an Entry/Exit temperature of 2°C.
9) After running for several minutes, verify that the air exiting the unit is cool
(between 5 and 10°).
10) With the unit operating, turn off the filter pump. The unit should
automatically turn off and display error code E03 (See § 6.4).
11) Allow the unit and the pool pump to run 24 hours per day until the
desired water temperature has been reached. When the set water inlet
temperature is reached, the unit will turn off. It will automatically restart (as
long as the pool pump is running) if the pool temperature is at least 0.5°C
below the set temperature.
Water flow switch - The unit is equipped with a flow switch that turns on the
heat pump when the pool filtration pump is running, and deactivates it when
the filtration pump is out of order. If the water is low, the E03 alarm code will
appear on the regulator (See § 6.4).
3. INSTALLATION AND CONNECTION (continued)

13
Time delay - The unit is equipped with a time delay of 3 minutes in order
to protect the control circuit components, to eliminate restart cycling and
contactor chatter. Thanks to this time delay, the unit automatically restarts
approximately 3 minutes after each control circuit interruption. Even a brief
power interruption will activate the restart time delay.
3. INSTALLATION AND CONNECTION (continued)

14
3.6 Water flow setting
With the water entry and exit valves being open, adjust the by-pass valve in
order to obtain a difference of 2°C between the inflow and outflow temperature
(see principle diagram § 3.1). You can verify the switch by seeing the entry/
exit temperatures directly on the control panel.
3. INSTALLATION AND CONNECTION (continued)
Water inlet temperature Water outlet temperature
Note: Opening the by-pass valve creates a weaker flow, which leads to an
increase in ∆T.
Closing the by-pass valve creates a stronger flow, which leads to a
decrease in ∆T.

15
4. USER INTERFACE
Legend
13
14
15
17
12
12a
7
8
9
10
6
2
1 3 4 5
10a1112b 10b10c
16
1Alarm (blinking red)
2Locked screen
3Date
4Hour
5Outside temperature
6
Recording base (Water
temperature and power
consumption)
7Reading settings and saving
8Scroll up / Increase
9Scroll down / Decrease
10 Operating mode selection
10a Cooling mode
10b Heating mode
10c Automatic mode
11 Water Output temperature
12 Selecting silence mode
12a Setting silence mode timer
12b Silence mode and activation
light
13 Conversion °C / °F
14 Water Input temperature
15 Setting the Timer date and
time ON/OFF
16 Defrost mode
17 On / Off
4.1 General presentation
The heat pump is equipped with a digital control panel with a touch screen,
electronically connected and pre-set at the factory in heating mode.

16
OFF Mode
When the heating pump is in sleep mode (OFF Mode), the button is grey.
ON Mode
When the heating pump is running or regulating (ON Mode), the button
lights up green.
4.2 Setting the Date and Time
4. USER INTERFACE (continued)
4.3 Timer function settings
Setting this function is necessary if you would like to run the heat pump for
a shorter period than what is defined by the filtration clock. Therefore, you
can program a deferred start and an anticipated stop or simply stop a certain
timeframe from running (at night, for example).
It is possible to set one Start Timer and one Stop Timers.
1
2
4
3
Quit without saving
Back to the previous screen
Back
Confirm
Enter all the fields (Day/Month/Year, Hour/Minute/Second before
confirming, otherwise the changes will not be saved.

17
4. USER INTERFACE (continued)
•Once the start time has been set, press (step 6) to activate the Timer. The
symbol and time now have blue highlighting.
•Repeat steps 3 to 6 to set and activate the stop time ( )
•When the settings are complete, the operating range of the heat pump is
highlighted in green and the highlight range is yellow.
•Press twice on to return to the main screen.
6
3
4
5
1
2
Stop (Confirm)
(Activate)
Start
Blue highlighting = Activated
Grey = Deactivated
The setting step is "hour to
hour".

18
4. USER INTERFACE (continued)
4.4 Setting and visualisation of the set point
In Mode “OFF” or Mode “ON”
Press the button to display the set point, then press or pour to
set the set point you wish.
Confirm by pressing and you will return to the main screen automatically.
The setting is made with a precision of 0.5 °C.
It is recommended to never exceed 32°C to avoid alteration of the liners.