Table Of Contents - Mitsubishi Electric EHSD-MEC Installation Manual

Contents
1. Safety Notices .................................................................. 2
2. Introduction ...................................................................... 2
3. Technical Information ...................................................... 3
4. Installation ....................................................................... 9
4.1 Location ........................................................................ 9
4.2 Water Quality and System Preparation .................... 12
4.3 Water Pipe Work ......................................................... 12
4.4 Electrical Connection ................................................ 15
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 2-zone valve ON/OFF control .................................... 21
5.5 Indoor unit only operation ......................................... 21
5.6 Smart grid ready......................................................... 21
5.7 Installation procedure for DHW tank ........................ 22
5.8 Remote Controller Options ....................................... 24
5.9 Using SD memory card.............................................. 26
5.10 Main remote controller ............................................ 27
6. Service and Maintenance .............................................. 35
7. Supplementary information .......................................... 40
■ Heat pumps certification
The mark "NF heat pumps" is an independent certification program proving that heat pumps' performances and production quality of the factory are
conformed with the certification reference NF-414. The combinations of indoor units and outdoor units, and their applications allowed to use the NF PAC
mark can be consulted on the website www.marque-nf.com
Accessories (included)
Back plate
1
Abbreviations and glossary
No. Abbreviations/Word
1 Compensation curve mode Space heating incorporating outdoor ambient temperature compensation
2 COP Coefficient of Performance the efficiency of the heat pump
3 Cooling mode Space cooling through fan-coils or underfloor 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 Underfloor 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
1
Screw M5×8
2
Description
SD memory card
1