Tabla De Contenido - Mitsubishi Electric Ecodan EHST20 serie Para El Instalador

Contents
1. Safety notices .................................................................................. 2
2. introduction ...................................................................................... 2
3. technical information ..................................................................... 3
Product specification ............................................................... 3
Component Parts ...................................................................... 4
technical drawings .................................................................. 6
Unit Compatibility ..................................................................... 7
Water circuit diagram ............................................................... 7
local system ........................................................................... 10
4. installation...................................................................................... 11
4.1 location ..................................................................................... 11
transportation and Handling ................................................. 11
Suitable location .................................................................... 11
Service access diagrams ....................................................... 11
room thermostat ................................................................... 11
repositioning .......................................................................... 11
4.2 Water Quality and System Preparation .......................................... 12
General .................................................................................... 12
Anti-Freeze .............................................................................. 12
new installation (primary water circuit)................................ 12
existing installation (primary water circuit) ......................... 12
Minimum amount of water required in the space heating circuit .12
How to access internal Components and Control and electrical Box .... 12
4.3 Water Pipe Work ....................................................................... 13
Hot Water Pipework ................................................................ 13
Cold Water Pipework .............................................................. 13
Hydraulic filter work (ONLY EHPT series) ............................ 13
Pipework Connections ........................................................... 13
insulation of Pipework ........................................................... 13
Filling the System (Primary Circuit) ...................................... 13
Sizing expansion Vessels ...................................................... 13
Water Circulation Pump Characteristics .............................. 14
immersion heater .................................................................... 14
Safety device Connections ................................................... 15
Piping diagram for 2-zone temperature control................... 15
4.4 refrigerant Pipework ............................................................... 15
Accessories (Included)
Adjustable feet
4
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 Cylinder unit Indoor unvented DHW tank and component plumbing parts
4 DHW mode Domestic hot water heating mode for showers, sinks, etc
5 Flow rate Speed at which water circulates around the primary circuit
6 Flow temperature Temperature at which water is delivered to the primary circuit
7 Freeze stat. function Heating control routine to prevent water pipes freezing
8 FTC4 Flow temperature controller, the circuit board in charge of controlling the system
9 Heating mode Space heating through radiators or Underfloor heating (Refer to Item no. 18 in this list.)
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 in the outdoor heat pump unit
13 PRV Pressure relief valve
14 Refrigerant A compound used within the heat pump cycle that goes through a phase change from gas to liquid
15 Return temperature Temperature at which water is delivered from the primary circuit
16 Split model Plate heat exchanger in the indoor unit
17 TRV Thermostatic radiator valve - a valve on the entrance or exit of the radiator panel to control the heat output
18 Underfloor heating A system of water carrying pipes under the floor, that warms the floor surface to heat the room/space.
1
Immersion heater boss tool
EH*T20*-*M*HB model only
Description
4.5 Safety device discharge Arrangements (G3) ........................ 16
4.6 electrical Connection ............................................................... 17
5. System Set Up ............................................................................... 21
5.1 dip Switch Functions ............................................................... 21
5.2 Connecting inputs/outputs ...................................................... 22
Signal inputs ........................................................................... 22
thermistor inputs ................................................................... 22
Outputs .................................................................................... 23
5.3 Wiring for 2-zone temperature control ................................... 23
5.4 remote Controller Options ...................................................... 24
1-zone temperature control ................................................... 24
2-zone temperature control ................................................... 25
remote installation of Main Controller ................................. 26
5.5 Using Sd memory card ............................................................ 27
5.6 Main Controller .......................................................................... 28
Setting the Main Controller .................................................... 31
Main Settings Menu ................................................................ 31
initial Settings ....................................................................... 31
domestic Hot Water (dHW)/legionella Prevention ............. 32
Heating..................................................................................... 34
Holiday mode .......................................................................... 35
Schedule timer ........................................................................ 35
Service Menu .......................................................................... 37
6. Commissioning .............................................................................. 44
Pre-commissioning exercises- potable/dHW circuit ..........44
Pre-commissioning Checklist ............................................... 44
7. Service and Maintenance.............................................................. 45
Basic troubleshooting for Cylinder Unit .............................. 45
error Codes ............................................................................. 46
Annual Maintenance ............................................................... 47
Annual Maintenance log Book ............................................. 47
engineers Forms .................................................................... 48
8. Supplementary information .......................................................... 49
refrigerant collecting (pumpdown) for split model systems only ..49
Back-up operation of boiler ................................................... 49
Pressure relief valve (10 bar)
Except EHPT20X-VM2HB
1
SD memory card
1 1