Metro Therm SPLIT BOX 6 kW User manual

SPLIT BOX FOR AIR-WATER HEATPUMP
MANUAL
SPLIT BOX 6 kW
SPLIT BOX 8/12 kW
SPLIT BOX 16 kW
08:211-1805

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TABLE OF CONTENTS
Introduction ............................................................................ 3
1. About the product.................................................................... 3
2. Transport, Handling and Delivery .................................................... 8
3. Positioning ........................................................................... 9
4. Water Circuit ........................................................................11
5. Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6. Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7. Control and Operation...............................................................13
8. Maintenance ........................................................................13
9. Disassembly and Decommissioning.................................................13
10. Troubleshooting and Repair .......................................................13
11. Declaration of Conformity.........................................................15
12. Product and Installer Information .................................................15

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INTRODUCTION
The aim of this manual is to give information, instructions and warnings on the split
box for air to water heat pumps. The manual is to be used by installers and plumbers as
well as by end users, since it contains important safety indications.
The manual is a part of the split box and it is to be conserved with care, since it
contains important installation and maintenance instructions that can be useful to
assure a long life time and an efficient operation.
1. ABOUT THE PRODUCT
The product is an indoor condenser unit that has been designed according to EU
directives. The product is intended for co-operation with an air to water heat pump for
space heating and hot water production for domestic use. The unit has been designed
to be ready for installation. The unit is intended for refrigerant R410A.
The unit is delivered with the refrigerant circuit charged with nitrogen to avoid
contamination and ingress of water.
The unit is equivalent to the HBS 05 in terms of performance.
1.1. Safety precautions
• The product shall be installed, commissioned, repaired only by qualified technicians.
• Incorrect installation can result in damages of properties and injuries to people and
animals.
• The unit shall be disconnected from the power supply when the cover is off.
• The unit shall not be used by children or people with limited physical or mental
capacity.
• Children should be supervised to ensure that they do not play with the appliance.
• Cleaning and maintenance shall not be made by children without supervision.
• Do not place flammable materials in contact or close to the unit.
• The water system and the refrigerant system should be installed as stated in the
manual.
• When in service, the unit should not be placed in sub-zero temperature areas.
• When not in service, the unit can be placed in sub-zero temperature areas, but all the
water in the heat exchanger and associated pipe work should be removed.
• The unit should be used only for its specified use. The manufacturer is not liable for
any damages due to failure to observe this manual.
• Take all the possible precautions to avoid incidents.
• The product is intended for R410.

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1.2. Safety instructions - Cooling circuit
• Only skilled and trained technicians shall carry out repair and service of the heat
pump circuit.
• Before opening the cooling circuit, discharge the refrigerant to a level that allows
safe working conditions.
• The refrigerant can be toxic if inhaled or if in high concentrations.
• Special attention should be given if the work is carried out with an open flame.
1.3. Serial number
The serial number can be found on the nameplate which is located under the front
cover of the split box.
1
1
2
2
3
3
4
4
5
5
6
6
A A
B B
C C
D D
990300010 Splitbox serienummer
Figure 1. Name plate and serial number.

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1.4. Technical data
The split box is composed of a plate heat exchanger which transfer heat from
condensing refrigerant to a water circuit. Required temperature sensors, refrigerant
filter and pressure transmitter together with control board ensures correct operation
of the unit.
1.4.1. Process and Instrumentation Diagram
A: Refrigerant flow
B: Refrigerant return
C: Space heating return
D: Space heating flow
1: Condenser
2: Filter
3: Pressure sensor
4: Temp. sensor, refrigerant return
5: Temp. sensor, space heating return
6: Temp. sensor, space heating flow
7: Print control board (PCB)
8: Supply power
9: Signal cable to outdoor heat pump
10: Residual current device (RCD) (optional)
11: Cable for heat tracing (optional)
A
B
D
C
1
2
3
45
6
7
A: Refrigerant flow
B: Refrigerant return
C: Space heating return
D: Space heating flow
1: Condenser
2: Filter
3: Pressure sensor
4: Temp. sensor, refrigerant return
5: Temp. sensor, space heating return
6: Temp . sensor, space heating flow
7: Print control board
8: Supply power
9: Signal cable to outdoor heat pump
10: Residual current device (RCD)
(optional)
11: Cable for heat tracing (optional)
9
10
8
11
Figure 2. Process and instrumentation diagram.
1.4.2. Component location
1
1
2
2
3
3
4
4
5
5
6
6
A A
B B
C C
D D
990300015 Splitbox komponentplacering
XL1 XL2
XL53
XL52
HZ2
EP2
PF3
UB1 UB2 UB3
BT15
BT3
BP4
AA23
AA23-X100
AA23-X4
AA23-S3
A23-F3
AA23-X1
BT12
Figure 3. Component location