Panasonic Secon H Series Manual

‘H / J’Series Typical
Installation and setup
Monobloc System
Revision 1.4 January 10, 2022

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
This manual is designed to be a quick guide to the most common type of instal-
lation for a Panasonic Monobloc system.
This assumes heating via a buffer tank or low loss header, domestic hot water
via a cylinder with sensor pocket and immersion heater, 3 port diverting valve
and remote room programmable temperature controller.
In the above system the monobloc units functions are controlled by the units own controller and this
is only used by the technician not the end user.
The end user controls the heating demand using a wireless room controller and can use this to set the
room temperature. If this includes a time clock then they can have different settings for different
times of the day or week with night and holiday set back.
The heat pump controls the domestic hot water temperature itself including for an optional sterilisa-
tion cycle using the 3 way valve and (if needed) the ‘Booster Heater’ which is the name Panasonic use
for the immersion heater.
There is an electric heater inside the monobloc unit. Panasonic refer to this as the ‘Backup Heater’.
The 3 way valve is a diverting, not a mixing valve. When unpowered it provides flow to the buffer
tank. When powered it cuts off flow to the buffer tank and diverts it to hot water.
A buffer tank is necessary in order to provide a minimum water volume and also thermal separation
for the system. It will protect the unit from short cycling, heat exchanger damage and low water flow
trips. Ideally a buffer tank should have an auto air vent on top.
Important—All piping
should be 28mm copper
as a minimum, larger if
plastic.
* Please note—the monobloc unit contains a strainer
so an external one is optional as is a flowsetter.
* A magnetic filter is mandatory for all installations.
Heating System
Strainer & Magnetic Filter *
Zone Valve
Flowsetter *
3 way valve
for dhw tank
Panasonic
Controller
Wireless Base Station
Wireless Room Control

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
Warranty
Please check the following before commencing startup as they are important conditions of
Panasonics warranty.
• A magnetic filter must be installed in the return pipe as close as possible to the unit. Do
not switch the system on without this.
• A buffer tank or low loss header must be used to create hydraulic separation and ensure
a minimum primary water volume of either 30 litres (single fan unit) or 50 litres (twin
fan unit). If using a low loss header then a volumising tank is probably required.
• The pipe diameter used must be no smaller than 28mm copper (larger if plastic)
• If glycol (anti-freeze) is used then this should be food safe and pre mixed before intro-
duction and of the correct strength for the system. Most applications will require this.
• The water quality should be tested against Panasonics requirements.
Part of the startup process involves checking the water flow rate. In order for the unit to op-
erate at all then an absolute minimum low rates must be observed aswell as the
recommended pipework sizing.
kW output of unit
5
7
9
12
16
Flow rate (L/min)
14.3
20.1
25.8
34.4
45.9
Primary Pipework sizing Guide
kW Output
Copper Pipe Size O/D (mm)*
5kW
22
7kW
22
9kW
28
12kW
28
16kW
35
*Please note that these sizes are for guidance only and may differ dependant on pipe run, pressure losses within the system and
numberof bends.
A full copy of Panasonics Warranty Terms and Conditions can be found at
https://www.aircon.panasonic.eu/GB_en/downloads/others/

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
Power Supply
Monobloc units require two power supplies.
The first, Power Supply 1 is for the heat pump unit and the second Power Supply 2 is for the
electric heating, both for the Backup (internal) heater and the Booster (dhw tank immersion)
heater.
Single Phase Requirement’s
Model (single Phase)
Power Supply 1
(Compressor) Circuit
Breaker Size and
cable
Recommended RCD
Power Supply 2 (BackUp
Electric) Circuit Breaker
Size and cable
Recommended RCD
WH-MDC05J3E5
16A - 1.5mm²*
30mA, 2P, type A
16A-1.5mm²*
30mA, 2P, type AC
WH-MDC07J3E5
25A - 4mm²*
30mA, 2P, type A
16A-1.5mm²*
30mA, 2P, type AC
WH-MDC09J3E5
25A - 4mm²*
30mA, 2P, type A
16A-1.5mm²*
30mA, 2P, type AC
WH-MDC12H6E5
30A –4mm²*
30mA, 2P, type A
30A –4mm²*
30mA, 2P, type AC
WH-MDC12J6E5
30A –6mm²*
30mA, 2P, type A
30A –4mm²*
30mA, 2P, type AC
WH-MDC16H6E5
30A –4mm²*
30mA, 2P, type A
30A –4mm²*
30mA, 2P, type AC
WH-MDC16J6E5
30A - 6mm²*
30mA, 2P, type A
30A –4mm²*
30mA, 2P, type AC
WH-MXC09H3E5
30A –6mm²*
30mA, 2P, type A
30A –1.5mm²*
30mA, 2P, type AC
WH-MXC09J3E5
30A –6mm²*
30mA, 2P, type A
30A –1.5mm²*
30mA, 2P, type AC
WH-MXC12H6E5
30A –6mm²*
30mA, 2P, type A
30A –4mm²*
30mA, 2P, type AC
WH-MXC12J6E5
30A –6mm²*
30mA, 2P, type A
30A –4mm²*
30mA, 2P, type AC
*All Cable Sizes and Breaker Sizes should be checked by a NICEIE qualified Electrician
Three Phase Requirement’s
*All Cable Sizes and Breaker Sizes should be checked by a NICEIE qualified Electrician
Model (three Phase)
Power Supply 1
(Compressor)
CircuitBreaker
Size
Recommended RCD
Power Supply 2
(BackUpElectric) Circuit
Breaker Size
Recommended RCD
WH-MXC12H9E8
20A - 1.5mm²*
30mA, 4P, type A
20A-1.5mm²*
30mA, 4P, type AC
WH-MXC12J9E8
20A - 1.5mm²*
30mA, 4P, type A
20A-1.5mm²*
30mA, 4P, type AC
WH-MXC16H9E8
20A - 1.5mm²*
30mA, 4P, type A
20A-1.5mm²*
30mA, 4P, type AC
WH-MXC16J9E8
20A - 1.5mm²*
30mA, 4P, type A
20A-1.5mm²*
30mA, 4P, type AC

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
CN6
OLP Booster Heater
Either link across or connect to immersion overload
Zone 1 Room Sensor
CN5
Monobloc Main Control PCB
Outdoor Air Sensor
Tank Hot Water Sensor
Tank Sensor
CN4
External Control 1
Remote Controller
CN3
Boiler Contact
Panasonic Controller
Extra Pump
2 Way Valve 3 Way Valve
C O N C O N
Booster Heater
Heat Cool N L
L
N
E
Earth
CN1
CN2
Immersion Heater 3KW—220V
Earth
Heating Control
Wireless Programmable Controller
Base Station
N PUMP
Heating
Circulation
Pump
Thermostat
Base
Station
L
N
COM
NO
E
Open N E
Open N E
Control Wiring
This shows a basic heating and domestic hot water system as shown on the first page.
Connections are made onto the main control PCB in the monobloc unit.
3 Port Diverting Valve
Motor Open for Tank Mode
Zone Valve
Please Note
• If you use an immersion (Booster) Heater with the hot water cylinder then the two ter-
minals OLP Booster Heater should be shorted or connected to an overload NC contact
• Be sure to run the Panasonic Controller cable separately to other cables
• We recommend taking the immersion heater and the heating pump wiring through local
fused switches mounted next to each (Pump—5A and Heater 16A)
• Ensure the thermostat in the immersion heater is set to maximum
The tank hot water sensor is a Panasonic specific part and not a generic item.
Please confirm all details with the Panasonic installation manuals.
All electrical wiring must be carried out by a competent electrician in accordance with local
and national regulations.

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
Pre-Start Checks
Please check the following before commencing startup.
• Power must be supplied to the monobloc unit for at least 8 hours before start up in or-
der to provide sufficient power to the compressor heater
• Check all electrical wiring and connections
• Make sure all auto air vents are open and the pressure relief valves are closed
• Make sure the system is filled with the correct coolant fluid to around 2 Bar
• Check the expansion vessel is large enough. The Panasonic unit contains an expansion
tank large enough for 150 litres for single fan and 200 litres for twin fan models. For lar-
ger water volumes or more than 7m height difference then an extra tank is required.
• Check all fuses and circuit breakers.
Controller Setup on Start Up
Once you are in installer mode set the pump to run in Air Purge
In the Pump maximum speed menu you can set the pump to On, Off or Air Purge. Set
the Air Purge mode, open the 3 way valve manually and let the system run to get rid of
any air. When this is finished check the water flow is sufficient using the On mode with
the 3 way valve closed. Remember—2.9l/hr per KW is what you want.

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
Installer Setup—System Setup
How to set up the unit for a typical installation from Installer Setup mode.
First, In the Installer Setup menu choose System Setup. Then scroll through each setting and
set the values as below.
Set this as NO
Set this as
Room Thermostat
External
Usually don’t
change this.
For low power set
at 3KW
Set this as YES
Set this as YES
Set this as
EXTERNAL
Set this as NO

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
Set this as NO
Set this as NO
Set this as NO
Set this as NO
Set this as
GLYCOL only if
anti freeze is
used
Set this as
MANUAL

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
Installer Setup—Operation Setup
After setting up System Setup scroll back to the Installer Setup menu and choose Operation
Setup which will give you the options to set up HEAT and TANK modes. Set each up as below
Set this as
Compensation
Curve with set-
tings as below
in red
For test purposes set this at 55C—45C—minus 5C and 15C respectively
When testing is finished we recommend changing this to
For underfloor heating 35C—30C —minus 5C and 15C respectively
For modern radiators 45C—35C —minus 5C and 15C respectively
For old fashioned radiators 52C—40C —minus 5C and 15C respectively
Set this as 35C
during testing
then drop to
20C after test
Set this at 5C
Set this at
Minus 5C
Set this at
1 hour
Set this at
40 minutes

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
Setting a sterilisation cycle requires an immersion heater controlled by the Panasonic unit, uses
energy and carries the risk of scalds. Discuss this with the end user.
Sterilisation is to prevent the growth of legionella.
Legionella grows at between 20C and 45C but dies above 45C
Scald time is minutes for water at 50C but seconds at 60C
To optimise protection against scalds then choose NO sterilisation cycle, set the tank temperature to 50C and
lower the Tank Reheat Temperature (* above) to minus 5C.
To optimise legionella protection then Choose a weekly sterilisation cycle. Discuss the day and time with the
customer. Choose 60C and 10 minutes. You can set the tank temperature at 45-48C with sterilisation cycle
set to on. Check the immersion heater physically and ensure the thermostat on it is set to maximum.
Installer Setup—Service Setup
After setting up Operation Setup scroll back to the Installer Setup menu and choose Service
Setup which will give you the options of setting the Pump Maximum Speed, Pump Down Op-
eration, Dry Concrete Function and Service Contact. Use Pump Maximum Speed to measure
the water flow rate and check it is sufficient (2.9 l/min per KW), note the flow rate down and
then set your contact details in Service Contact
Function Setup Settings
Enter your
details
All that is required now is to go back to the Main Menu choose the Function Setup and check
the following settings
Room Heater—Set to On
Tank Heater—Set to On
Sterilisation—Set to either ON or OFF according to the notes above in the previous section
You are now ready to Test the System
Set this as
minus 8C *
See notes
Below in red
Discuss with
end user

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
System Test
Assuming you have set up the system as recommended then it is now time to do a run test of the system.
Controller Description
Water Flow Rate
Use the Pump Maximum Speed function described on page 4 but with the On (not Air Purge) setting to check
the water flow rate with the 3 way valve closed and also with it open.
If the flow rate is too low the pump speed can be increased
Press MENU
Select INSTALLER SETUP
Select SERVICE SETUP
Select PUMP MAX SPEED
Scroll across to Operation
Set this to ON
Now check that the pump
operates and check the
flow rate. You can adjust
the speed if required
Checking water flow
rate on the go! Press &
hold LEFT RIGHT UP
Press the UP, LEFT and RIGHT but-
tons together for 5 seconds while
the unit is running then scroll down
to address 12. This shows the cur-
rent water flow rate in l/min
PRESS & HOLD
Address
Data
10
0
11
0
12
34.5
SCROLL DOWN TO ADDRESS 12
Important—Water Flow
If alarm H62 shows then the unit water flow is too low.
Water flow levels are shown below and can be checked
using the Pump Max Speed function see left.
Model
5KW
7KW
9KW
12KW
16KW
Minimum to run Optimum Flow
7 l/m (0.4m3/hr) 15 l/min (0.9m3/hr)
7 l/m (0.4m3/hr) 21 l/min (1.2m3/hr)
7 l/m (0.4m3/hr)
26 l/min (1.6m3/hr)
11 l/m (0.7m3/hr) 35 l/min (2.0m3/hr)
11 l/m (0.7m3/hr) 46 l/min (2.8m3/hr)

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
System Test—Heating Mode
First ensure that the base station for the heating system is not sending a demand for heating.
Some systems let you do this on the base station and some need the thermostat to be turned
right down.
Once this is done press the Start Stop button so that the green light comes on and the main
display changes. You will have three main display segments as below. Scroll to the left sec-
tion and use the up or down arrows to select just the sun (Heat) icon. Then press the central
button to confirm.
Selecting Heat Only mode
Now set a heating demand on the thermostat or
base station and the units pump will operate. Note
the operation sign next to the Heat icon
Press the centre button to confirm
The unit will operate but it may take some time to start to heat the water from cold. Be patient. Check that the
3 way valve has not operated and the water flow is to the buffer and not hot water cylinder. If the water is cold
then the unit may operate using the electric heater before initiating actual heat pump operation. But gradually
the central displayed temperature (water flow temperature) will increase. If you want to test more quickly then
switch the local switch for the secondary pump off so that the heat pump is only heating the buffer tank and
only switch this back on when the water temperature is above 40C. This will now drop down again.
When the heat pump has actually started operation and the fans outside are rotating you can check the system
operating details by pressing the menu button and selecting System Check. Select Water Temperatures to see
the Flow and Return temperature. Select Compressor to see the compressor speed in Hz (0 is off). Once the
system is operating in a stable manner then check the running Amps on Power Supply 1 with a test meter.
Menu Button
Select System Check Select Water Temperatures Select Compressor

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
System Test—Tank Mode
While you are testing the system in Heating mode you will want to bleed any radiators. Once
this is done and the heating system is operating correctly then you can check the system in
Tank Mode.
Turn the heating demand OFF using the remote thermostat or base station and check that
the heating turns off as a result. This may take several minutes.
Now use the left arrow to go back into the mode section and the up and down arrows to se-
lect the tap icon only (tank mode). Now press the right arrow to set the tank temperature us-
ing the up and down arrows. We recommend using a set temperature of 48-50C if not using
a sterilisation cycle or 45 to 48C if you are using a sterilisation cycle. Press the centre button
to confirm and set the unit to operate.
Selecting Tank Only mode
Now the system should operate in tank mode. Note
the operation sign next to the Tank icon Now right arrow to set the tank temperature
The unit will operate but once again it may take some time to start to heat the water from cold. Be patient.
Check that the 3 way valve has operated and the water flow is to the hot water cylinder and not the buffer.
When the heat pump has actually started operation and the fans outside are rotating you can, once again, check
the system operating details by pressing the menu button and selecting System Check. Select Water Tempera-
tures to see the Flow and Return temperature. Select Compressor to see the compressor speed in Hz (0% is
off). Once the system is operating in a stable manner then check the running Amps on Power Supply 1.
Menu Button
Select System Check Select Water Temperatures Select Compressor

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
Check list after testing
Once the system has been fully tested in both heating and tank modes then it can be set up
to actually run for the customer. The end user should be dissuaded from trying to use the
Panasonic controller themselves as they may not understand the ramifications of changes
they make. They should be, instead, thoroughly familiarised with the operation of the wireless
control thermostat which is what they will use to set the heating demand.
The important thing for them to know is what the green light is doing. If it is ON then the
heat pump is operating normally. If it is OFF then somebody has turned the heat pump off
and it needs to be turned on again or there is no LCD display then there is a problem and a
fuse has tripped or there is a power interruption. If it is FLASHING then the unit has a fault
and the unit will display a fault code which they should report to you.
So you should now turn the heat pump off on the controller so the green light is off then go
back into the Menu of the controller and do the following.
Go into Installer setup. Now select System Setup and then Heat mode.
Select Water temperature for Heating On. This should be set at Compensation Curve. Go into
the settings for the compensation curve and set as below
When testing is finished we recommend changing this to
For underfloor heating 35C—30C —minus 5C and 15C respectively
For modern radiators 45C—35C —minus 5C and 15C respectively
For old fashioned radiators 52C—40C —minus 5C and 15C respectively
Now select Outdoor Temperature for heating off. Set this to 20C
Now go back out of the menus and turn the heat pump back on. Go into the Menu function
and set the unit to run in heat and tank mode. You can now hand over the system to the end
user.
1—Function Icon
2—Mode 3—
Temp Setting
4—Current Heating Temperature
5—Current Tank Temperature
6—Current Outside Temperature
LIT—Unit is on and operational Flashing—Unit is is Fault Mode Off—Unit is off or has no power

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com

E: [e-mail]
T: 0191 516 6554
W: www.seconrenewables.com
These are a set of functions that can
be easily accessed using the quick
menu key. The user should generally
not need to use these but they can
be useful in the event of problems or
to prevent unauthorised access to the
controller. For more details consult
the User Manual.

Have you visited our web shop yet? www.seconrenewables.com
We have a huge range of heat pumps and accessory items!
Secon Renewables, Unit 87, Business & Innovation Centre, Wearfield, Sunderland SR5 2TH
W: www.seconrenewables.com
E: [e-mail]
T: 0191 516 6554