Installation; Location - Mitsubishi Electric ecodan EHPT20Q-VM2EA Installation Manual

3
Technical Information
Local system
1-zone temperature control
Zone1
4
1. Heat emitters (e.g. radiator, fan coil unit) (local supply)
2. Zone1 2-way valve (local supply)
3. Zone2 2-way valve (local supply)
4. Auto-bypass valve (local supply)
Energy monitoring
End user can monitor accumulated*1 'Consumed electrical energy' and 'Delivered energy' in each operation mode*2
on the main controller.
*1 Monthly and Year to date
*2 - DHW operation
- Space heating
Refer to "5.7 Main controller" for how to check the energy, and "5.1 DIP switch functions" for the details on DIP-SW
setting. Either one of the following two method is used for monitoring.
Note: The method 1 should be used as a guide. If greater accuracy is required, then method 2 should be used.
1. Calculation internally
Electricity consumption is calculated internally based on the energy consumption of outdoor unit, electric booster
heater, pump1 and other auxiliaries. Produced heat is calculated internally by multiplying delta T (Flow and Return
temp.) and fl ow rate measured by the factory fi tted sensors. Set the electric booster heater capacity and water
pump(s) input according to indoor unit model. (Refer to the menu tree in "5.7 Main controller")
Booster heater Pump1*1
Default 2kW ***(factory fi tted pump)
EHPT20Q-VM2EA 2kW ***
<Table 3.5>
When anti-freeze solution (propylene glycol) is used for primary water circuit, set the produced energy adjustment if
necessary. For further detail of above, refer to "5.7 Main controller".
Note: Consumed electric energy of pump A is automatically calculated by the system.
2. Actual measurement by external meter (locally supplied)
FTC has external input terminals for 2 'Electric energy meters' and a 'Heat meter'. If two 'Electric energy meters' are
connected, the 2 recorded values will be combined at the FTC and shown on the main controller. (e.g. Meter 1 for
main power line, Meter 2 for booster heater power line)
Refer to the [Signal inputs] section in "5.2 Connecting inputs/outputs" for more information on connectable electric
energy meter and heat meter.
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1-zone temperature control (2-zone valve ON/OFF control)
Zone1
2
4
1 Zone2
3
*1 "***"
displayed in the energy monitor setting mode means the
factory fi tted pump is connected as pump 1 so that the
input is automatically calculated.
4

Installation

<Preparation before the installation and service>
● Prepare the proper tools.
● Prepare the proper protection.
● Allow parts to cool before attempting any maintenance.
● Provide adequate ventilation.
● After stopping the operation of the system, turn off the power-supply breaker and remove the
power plug.
● Discharge the capacitor before commencing work involving the electrical parts.
1
<Precautions during service>
● Do not perform work involving electrical parts with wet hands.
● Do not pour water or liquid into the electrical parts.
1
● Do not touch the refrigerant.
● Do not touch the hot or cold surfaces in the refrigerant cycle.
● When the repair or the inspection of the circuit needs to be carried out without turning off the
power, exercise great caution not to touch any live parts.
● Do not attach any external pump to the system.

4.1 Location

Transportation and Handling
Cylinder unit is delivered on a wooden pallet base with cardboard protection.
Front
Fixing legs
Suitable Location
Before installation the cylinder unit should be stored in a frost-free
weatherproof location. Units must NOT be stacked.
• The cylinder unit should be installed indoors in a frost free weather proof location.
• Install the cylinder unit where it is not exposed to water/excessive moisture.
• Install the cylinder unit only where the difference in height between the bottom of the
cylinder unit and the bottom of the outdoor unit is less than 5 m (see Figure 4.1.2).
• The cylinder unit should be positioned on a level surface capable of supporting it΄s
fi lled weight. (Adjustable feet (accessory parts) can be used to ensure unit is level) (see
Figure 4.1.1)
• When using the adjustable feet, ensure that the fl oor is strong enough.
• When fi tted, the adjustable feet should only be extended and used to level and stabilise
the unit. And weight load should be evenly spread.
• Care should be taken that minimum distances around and in front of the unit for service
access are observed <Figure 4.1.3>.
• Secure the cylinder unit to prevent it from potentially being knocked over.
Care should be taken when transporting the cylinder
unit that the casing is not damaged by impact. Do not
remove the protective packaging until cylinder unit
has reached its fi nal location. This will help protect the
structure and control panel.
• The cylinder unit can be transported either vertically
or horizontally. If transported horizontally the
panel marked 'Front' must be facing UPWARDS
<Figure 4.1.1>.
• The cylinder unit should ALWAYS be moved by a
minimum of 2 people.
• When you carry a cylinder unit, please use the
handle of the unit upper part.
• Before using, make sure they are securely
attached.
• Please carefully remove fi xing legs, wooden base
Attaching position of adjustable
and any other packaging.
feet (accessory parts)
<Figure 4.1.1>
Outdoor unit
Cylinder unit
5m
5m
<Figure 4.1.2>
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