Daikin EKSOLHWAV1 Installation manuals

INSTALLATION AND

OPERATION MANUAL

Solar kit for air to water heat pump system

EKSOLHWAV1

<![if ! IE]> <![endif]>1	<![if ! IE]> <![endif]>EKHW*300*	<![if ! IE]> <![endif]>EKHW*200*	<![if ! IE]> <![endif]>EKHW*150*

4 EKHW*150*

EKHW*200*

EKHW*150*

8

7
7		4
	8
			3
7		6
	8
7			5
		6	2
	8
			A

89

A

19

EKHW*200+300*

	8
	7		10
	7	3	13
	8
		6
	7
	8	2	12
	7	5
			13
	8	6
		A

112

A

19

EKSOLHWAV1

Solar kit for air to water heat pump system

Installation and operation manual

CONTENTS

Page

INTRODUCTION

Introduction ........................................................................................	1
General information.....................................................................	1
Scope of this manual...................................................................	1
Model identification......................................................................	1
General system setup and operation.................................................	2
General system setup .................................................................	2
Requirements and recommendations concerning
field supplied solar panels and solar pump station......................	2
Accessories .......................................................................................	3
Accessories supplied with the solar kit........................................	3
Overview of the solar kit ....................................................................	4
Main components ........................................................................	4
Installation of the solar kit ..................................................................	4
Selecting an installation location .................................................	4
Dimensions and service space....................................................	4
Installation guidelines ..................................................................	5
Installing the solar kit...................................................................	5
Field wiring ..................................................................................	6
Start up ..............................................................................................	8
Operating instructions........................................................................	9
Configuring your system..............................................................	9
Troubleshooting and servicing .........................................................	11
General guidelines ....................................................................	11
General symptoms ....................................................................	11
Error codes................................................................................	11
Disposal requirements .....................................................................	11
Technical specifications ...................................................................	12
Annexes ...........................................................................................	12
Decision flow of heating the domestic water
by heat pump or by solar kit ......................................................	12
Decision flow of heating the domestic water
by booster heater .............................................................................	13
READ THESE INSTRUCTIONS CAREFULLY BEFORE
INSTALLATION.
PLEASE LEAVE THIS MANUAL WITH THE EKSOLHW
SOLAR KIT AFTER INSTALLATION.

IMPROPER INSTALLATION OR ATTACHMENT OF

EQUIPMENT OR ACCESSORIES COULD RESULT IN ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR

OTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLY TO USE ACCESSORIES MADE BY DAIKIN WHICH ARE SPECIFICALLY DESIGNED FOR USE WITH THE EQUIPMENT AND HAVE THEM INSTALLED BY A PROFESSIONAL.

IF UNSURE OF INSTALLATION PROCEDURES OR USE, ALWAYS CONTACT YOUR DAIKIN DEALER FOR ADVICE AND INFORMATION.

THE UNIT DESCRIBED IN THIS MANUAL IS DESIGNED FOR INDOOR INSTALLATION ONLY AND FOR AMBIENT TEMPERATURES RANGING 0°C~35°C.

General information

Thank you for purchasing this EKSOLHWAV1 solar kit.

The solar kit must be installed by a competent person and be installed in compliance with the instructions in this manual.

The solar kit is to be connected to the EKHW* domestic hot water tank.

The solar kit will enable you to heat up your domestic water by means of the sun whenever the sun is available.

To get the most comfort and energy savings out of your system, make sure to observe the section "Configuring your system" on page 9 of this manual.

Scope of this manual

This installation manual describes the procedures for installing and operating the EKSOLHWAV1 solar kit.

Model identification

EK	SOL HW	A	V1

V1 = 1P/230 V/50 Hz

Series

Domestic hot water

Solar kit

European Kit

EKSOLHWAV1	Installation and operation manual
Solar kit for air to water heat pump system	1
4PW41598-1

GENERAL SYSTEM SETUP AND OPERATION

General system setup

The solar kit is designed to transfer the heat from the solar panels to the heat exchanger of the domestic hot water tank EKHW* and is to be installed in the system as shown in the scheme below.

6

1

8

2

M

7 5

4

3

1Solar panels (field supply)

2Solar pump station (field supply)

3Solar kit

4Domestic hot water temperature sensor of the solar pump station (field supply)

5Domestic hot water temperature sensor of the indoor unit

6Solar panel temperature sensor (field supply)

7Solenoid 2-way valve (only for UK, refer to the EKUHW* kit)

8Non-return valve (to be included in solar pump station or to be installed in field piping)

Heating system.

Refer to the indoor unit installation manual.

The solar panels (1) catch the heat of the sun. When the temperature of the glycol solution in the solar panel has become higher than the water temperature in the domestic hot water tank, the pump of the solar pump station (2) and the pump of the solar kit (3) start to operate as to transfer the heat to the heat exchanger of the domestic hot water tank, unless priority is given to the heat pump. Refer to "Operating instructions" on page 9 (subsection: Configuring your system).

Requirements and recommendations concerning field supplied solar panels and solar pump station

Solar panel

Appropriate selection is to be made by your solar panel supplier, in accordance with local regulations.

Solar pump station

The solar pump station must meet following requirements:

Electrical connection

The solar pump station will have an auxiliary contact that closes when the contact for the pump of the solar pump station is operated.

This contact will provide 230 V to the input of the indoor unit, and prevent domestic water heating by the heat pump and/or booster heater during solar heating.

For wiring examples, refer to the following drawings.

Example 1

L	N	R1	N
			P
			Solar pump station
230 V

Field wiring

Solar pump station

Indoor PCB: A4P

Example 2

YC Y1 Y2 Y3 Y4

Indoor PCB: A4P

L N N R1

P						YC	Y1	Y2	Y3	Y4
Solar pump station					Indoor PCB: A4P

230 V

Field wiring

Solar pump station

Indoor PCB: A4P

If the pump station has a speed controlled pump, make sure to disable this function so that the indoor PCB receives 230 V at all times.

Installation and operation manual	EKSOLHWAV1
2	Solar kit for air to water heat pump system
	4PW41598-1

Settings

■Maximum solar panel temperature

If the temperature of the solar panel is above this value, the solar pump station will stop or not resume pump operation.

This setting will have a fixed value equal to or below 110°C, or it will be possible to put this value equal to or below 110°C.

Putting this value to a higher value can break down the pump of the solar pump station.

Also refer to the eye-catcher caution label that was torn up when unpacking the installation manual.

Limiting the maximum solar panel temperature to 110°C however, can affect efficiency of the solar panel.

But on the other hand:

■as it is important for reliability of the pump in the solar pump station only that temperature of the return water to that solar pump is lower than 110°C;

■and in case the 110°C limit for the return water temperature to the solar pump can be guaranteed by other means than by limiting the 'Maximum solar panel temperature';

then the value of the 'Maximum solar panel temperature' can be set to a higher temperature.

Please contact your local solar panel dealer.

■ON/OFF/AUTO

If the solar pump station has an ON/OFF/AUTO function, make sure to put it on the AUTO function. This means that the pump will switch on automatically when the solar panel temperature rises sufficiently above the domestic hot water tank temperature and switch off automatically when the difference between the solar panel and the domestic hot water tank temperature becomes too low.

■Maximum tank temperature

When the maximum temperature of the domestic hot water tank is reached, the solar pump station will stop pump operation.

Do not put this value above 80°C (70°C for units installed with the EKUHW* kit) to avoid overheating of the domestic hot water tank and the activation of the booster heater thermal protector in the domestic hot water tank.

Some solar pump stations provide the possibility to still dump heat to the domestic hot water tank, even when the maximum domestic hot water tank temperature is already reached. This to reduce the solar panel temperature by circulating the solar panel fluid and transfer the heat to the domestic hot water tank.

If this function is present, it should be put to OFF as to avoid thermal cut out operation of the tank.

NOTE	You can also change the domestic hot water
	temperature setpoint on the controller of the indoor
	unit. Refer to the operation manual of the indoor unit.
	This temperature is sensed by the domestic hot water
	temperature sensor of the indoor unit, located in the
	upper thermistor holder of the domestic hot water tank.
	For reasons of energy savings, it is advised to put this
	temperature as low as possible without compromising
	the required supply of hot water.

The maximum temperature that can be set in the controller of the solar pump station is sensed by the domestic hot water temperature sensor of the solar pump station, located in the lower thermistor holder of the domestic hot water tank.

Refer also to "Operating instructions" on page 9 (subsection: Configuring your system).

■Minimum temperature difference between domestic hot water tank and solar panel before starting pump operation

This minimum temperature difference will be put equal to or above 10°C.

EKSOLHWAV1

Solar kit for air to water heat pump system

4PW41598-1

■Anti-freeze setting

Some solar pump stations have an anti-freeze function. If the solar panel temperature becomes too low, such solar pump stations will circulate the solar fluid as to extract heat from the tank and to avoid freezing of the solar fluid.

Make sure to disable this function.

Make sure the concentration of glycol in the solar panel is big enough as to avoid freezing of the glycol at all times.

Hydraulic connection

Make sure the solar pump station has non-return valves as to avoid thermosiphon effect (migration of hot water to cold places). If the solar pump station has no hydraulic connections included, install them in the field piping as shown in "General system setup" on page 2.

ACCESSORIES

Accessories supplied with the solar kit

1	2	3	4	5		6	7	8	9	10
1x	1x	7x	1x		5x	2x	1x	1x	1x	2x

			Necessary accessory for installation
			of the solar kit for each type of
		<![if ! IE]> <![endif]>Quantity	domestic hot water tank
			150*	200*	300*	150*	200*	300*
				EKHW*		EKHWSU
1	Thermistor socket 1/2"
	Male BSP (internal	1	1	1	1	1	1	1
	diameter 6.1)
2	Connection pipe 3/4" Male	1	1	1	1	—	—	—
	BSP x 3/4” Male BSP
3	Sealing	7	6	7	7	7	6	6
4	Adaptor 3/4" Female	1	—	1	1	—	—	—
	BSP x 3/4" Male BSP
5	Adaptor 3/4" Male	5	5	5	5	4	5	5
	BSP x 3/4" Male BSP
6	PG nipple and nut	2	2	2	2	2	2	2
7	Installation manual	1	1	1	1	1	1	1
8	EKRP1HB solar/remote	1	1	1	1	1	1	1
	alarm address card
9	Solar contactor assembly	1	1	1	1	1	1	1
	K7M
10	Contactor fixing screw	2	2	2	2	2	2	2

Installation and operation manual

3

OVERVIEW OF THE SOLAR KIT

Main components

9

7a

7b

9

5

3

2

4

10

1

6

10

8

1Solar kit circulation pump

2Heat exchanger

3Inlet connection from solar pump station

4Return connection to solar pump station

5Inlet connection from the indoor unit

6Return connection to the indoor unit

7a Return connection to the 200/300 l domestic hot water tank heat exchanger

7b Return connection to the 150 l domestic hot water tank heat exchanger

8Inlet connection from the domestic hot water tank heat exchanger

9EPP casing

10 Non-return valves

Safety functions

Thermal cut out

The solar kit is electrically connected with the thermal cut out safety of the domestic hot water tank. (refer to "Field wiring" on page 6).

When the thermal cut out safety of the domestic hot water trips, the power supply to the pump of the solar kit is interrupted so that no more solar heat can be transferred to the domestic hot water tank.

Solenoid 2-way valve (only for UK)

The thermostat will close the solenoid 2-way valve when the temperature becomes too high (setting 79°C).

Installation and operation manual

4

INSTALLATION OF THE SOLAR KIT

Selecting an installation location

■The solar kit is to be installed in a frost free indoor space, directly connected to the domestic hot water tank.

■Make sure the service space is available as indicated in below drawing.

■The space around the unit has to allow sufficient air circulation.

■It shall be made sure that in the case of a leak, leaking water will not cause any damage or unsafe situations.

■Do not install or operate the unit in rooms mentioned below:

-Where corrosive gas like sulphurous gas exists: copper tubing and brazed spots may corrode.

-Where volatile flammable gas like thinner or gasoline is used.

-Where machines generating electromagnetic waves exist: the control system may malfunction.

-Where the air contains high levels of salt such as air near the ocean and where voltage fluctuates a lot (e.g. in factories). This applies also to vehicles or vessels.

Dimensions and service space

NOTE	For installation of the solar kit to the EKHWSU150*
	domestic hot water tank (UK only), the solar kit will not
	fit entirely tight to the tank.
	A
	B
<![if ! IE]> <![endif]>290

15°

<![if ! IE]>

<![endif]>971

	A	B
EKHW*150*	980	400
EKHW*200*
EKHW*300*
EKHWSU200*
EKHWSU300*
EKHWSU150*	1010	430

EKSOLHWAV1

Solar kit for air to water heat pump system

4PW41598-1