Table Of Contents - Mitsubishi Electric ecodan EHPT20Q-VM2EA Installation Manual

Contents
1. Safety Notices .......................................................................................3
2. Introduction ...........................................................................................5
3. Technical Information ..........................................................................5
4. Installation........................................................................................... 11
4.1 Location ........................................................................................ 11
4.2 Water Quality and System Preparation ......................................13
4.3 Water Pipework .............................................................................15
4.4 Safety Device Discharge Arrangements (G3) ............................20
4.5 Electrical Connection ...................................................................22
5. System Set Up ....................................................................................24
5.1 DIP Switch Functions ...................................................................24
5.2 Connecting inputs/outputs ..........................................................25
5.3 2-zone valve ON/OFF control ......................................................27
5.4 Indoor unit only operation (during installation work) ...............27
5.5 Remote Controller Options .........................................................28
5.6 Using SD memory card ................................................................29
5.7 Main Controller .............................................................................30
6. Commissioning ...................................................................................37
7. Case of DHW only use .......................................................................38
8. Service and Maintenance...................................................................40
Accessories (Included)
Adjustable feet SD memory card
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Abbreviations and glossary
No. Abbreviations/Word Description
1 Compensation curve mode Space heating incorporating outdoor ambient temperature compensation
2 COP Coeffi cient of Performance (The effi ciency of the heat pump)
3 Cylinder unit Indoor primary thermal store tank and component plumbing parts
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 for thermal store or space heating
6 Freeze stat function Space heating control routine to prevent water pipes freezing
7 FTC Flow temperature controller (the circuit board within cylinder unit that controls the system.)
8 Heating mode Space heating through radiators or Underfl oor heating
9 PRV Pressure relief valve
10 Return temperature Temperature at which water is returned from the primary circuit for thermal store and space heating
11 TRV Thermostatic radiator valve - a valve on the entrance or exit of the radiator panel to control its heat output
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Hose (rubber)
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Safety Notices
Please read the following safety precautions carefully.
WARNING
Precautions that MUST be observed to prevent injuries or death.
CAUTION
Precautions that MUST be observed to prevent damage to unit.
Intended use
● This product is designed and intended for domestic.
● This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning the use of the appliance by a
person responsible for their safety. Children should be supervised to ensure they DO NOT
play with the appliance or its associated controls.
● This appliance can be used by children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of experience and knowledge
if they have been given supervision or instruction concerning use of the appliance in a
safe way and understand the hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.
This Installation Manual along with the Operational Manual should be left with the product
after installation for future reference.
Mitsubishi Electric is NOT responsible for the failure of locally-supplied parts.
● Be sure to perform periodical maintenance.
● Be sure to follow your local regulations.
● Be sure to follow the instructions provided in this manual.
Mechanical
● The cylinder unit and outdoor unit MUST not be installed, disassembled, relocated, altered or
repaired by the user. Ask an authorised installer or technician. If the unit is installed improperly
or modifi ed after installation by the user water leakage, electric shock or fi re may result.
● The outdoor unit should be securely fi xed to a hard level surface capable of bearing its weight.
● The cylinder unit should be positioned on a hard level surface capable of supporting its fi lled
weight to prevent excessive sound or vibration.
● Do not position furniture or electrical appliances below the outdoor unit or cylinder unit.
● The discharge pipework from the emergency devices of the cylinder unit should be installed
according to local law / regulations.
● Only use accessories and replacement parts authorised by Mitsubishi Electric. These should
only be fi tted by a qualifi ed technician.
Electrical
● All electrical work should be performed by a qualifi ed technician according to local regulations
and the instructions given in this manual.
● The units MUST be powered by a dedicated power supply and the correct voltage and circuit
breakers MUST be used.
● Wiring should be in accordance with national wiring regulations. Connections MUST be made
securely and without tension on the terminals.
● Earth unit correctly.
WARNING
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