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Table Of Contents - Mitsubishi Electric ecodan EHST20C- TM9HB Operation Manual

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Table of Contents
Contents
1. Safety Precautions ........................................... 2
Disposal of the Unit ......................................................... 2
2. introduction ....................................................... 3
Overview of the System .................................................. 3
How the Heat Pump Works ............................................. 3
Economical Best Practice ............................................... 4
Overview of Controls ...................................................... 4
3. your Heating System ........................................ 5
System Configuration ..................................................... 5
Product Specification ...................................................... 6
Main Controller ............................................................... 8
General Operation .......................................................... 9
Main Settings Menu ........................................................ 9
Initial Settings ................................................................. 9
Holiday Mode ................................................................ 3
Schedule timer .............................................................. 3
Service Menu ................................................................ 4
5. Service and Maintenance............................... 15
Troubleshooting ............................................................ 5
Maintenance ................................................................. 5
abbreviations and glossary
No. Abbreviations/Word

Compensation curve mode
Space heating incorporating outdoor ambient temperature compensation
Coefficient of Performance the efficiency of the heat pump
2
COP
Space cooling through fan-coils or underfloor cooling (Refer to Item no. 20 in this list.)
3
Cooling mode
4
Cylinder unit
Indoor unvented DHW tank and component plumbing parts
5
DHW mode
Domestic hot water heating mode for showers, sinks, etc
6
Flow rate
Speed at which water circulates around the primary circuit
7
Flow temperature
Temperature at which water is delivered to the primary circuit
8
Freeze stat. function
Heating control routine to prevent water pipes freezing
9
FTC4
Flow temperature controller, the circuit board in charge of controlling the system
10 Heating mode
Space heating through radiators or Underfloor heating (Refer to Item no. 21 in this list.)
 Hydrobox
Indoor unit housing the component plumbing parts (NO DHW tank)
2 Legionella
Bacteria potentially found in plumbing, showers and water tanks that may cause Legionnaires disease
3 LP mode
Legionella prevention mode - a function on systems with water tanks to prevent the growth of legionella bacterium
4 Packaged model
Plate heat exchanger in the outdoor heat pump unit
5 PRV
Pressure relief valve
6 Refrigerant
A compound used within the heat pump cycle that goes through a phase change from gas to liquid
7 Return temperature
Temperature at which water is delivered from the primary circuit
8 Split model
Plate heat exchanger in the indoor unit
9 TRV
Thermostatic radiator valve - a valve on the entrance or exit of the radiator panel to control the heat output
20 Underfloor cooling
A system of water carrying pipes under the floor, that cools the floor surface to cool the room/space.
2 Underfloor heating
A system of water carrying pipes under the floor, that warms the floor surface to heat the room/space.

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