Mitsubishi Electric Hydrobox EHSD-VM2D - Default Chapter; Table of Contents

1
en
Contents
1. Safety Notices .................................................................. 2
2. Introduction ...................................................................... 2
3. Technical Information ...................................................... 3
4. Installation ......................................................................11
4.1 Location .......................................................................11
4.2 Water Quality and System Preparation .................... 13
4.3 Water Pipe Work ......................................................... 14
4.4 Electrical Connection ................................................ 16
5. System Set UP ................................................................ 18
5.1 DIP Switch Functions ................................................ 18
5.2 Connecting inputs/outputs ....................................... 19
5.3 Wiring for 2-zone temperature control .................... 20
5.4 Indoor unit only operation ......................................... 21
5.5 Using SD memory card.............................................. 22
5.6 Main remote controller............................................... 23
6. Service and Maintenance .............................................. 30
Abbreviations and glossary
No. Abbreviations/Word Description
1 Compensation curve mode Space heating incorporating outdoor ambient temperature compensation
2 COP Coefcient of Performance the efciency of the heat pump
3 Cooling mode Space cooling through fan-coils or underoor cooling
4 DHW mode Domestic hot water heating mode for showers, sinks, etc
5 Flow temperature Temperature at which water is delivered to the primary circuit
6 Freeze stat. function Heating control routine to prevent water pipes freezing
7 FTC Flow temperature controller, the circuit board in charge of controlling the system
8 Heating mode Space heating through radiators or Underoor heating
9 Hydrobox Indoor unit housing the component plumbing parts (NO DHW tank)
10 Legionella Bacteria potentially found in plumbing, showers and water tanks that may cause Legionnaires disease
11 LP mode Legionella prevention mode – a function on systems with water tanks to prevent the growth of legionella bacterium
12 Packaged model Plate heat exchanger (Refrigerant - Water) in the outdoor heat pump unit
13 PRV Pressure relief valve
14 Return temperature Temperature at which water is delivered from the primary circuit
15 Split model Plate heat exchanger (Refrigerant - Water) in the indoor unit
16 TRV Thermostatic radiator valve – a valve on the entrance or exit of the radiator panel to control the heat output
For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing the
cylinder unit. English is the original language. The other languages versions are translation of the original.
If you want more information that is not written in this manual, go to the
above website to download manuals, select model name, then choose
language.
http://www.mitsubishielectric.com/ldg/ibim/
Accessories (included)
Back plate Screw M5×8 SD memory card Joint pipe*
1 2 1 1
* Only E*SE series