Installation; Location; Transportation And Handling; Suitable Location - Mitsubishi Electric EHST20-Serie Installationshandbuch

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 condenser before commencing work involving the electric parts.
<Precautions during service>
● Do not perform work involving electric parts with wet hands.
● Do not pour water into the electric parts.
● Do not touch the refrigerant.
● Do not touch the hot or cold areas in the refrigerant cycle.
● When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to touch the live parts.

4.1 location

transportation and Handling

Handle
<Figure 4..>
Cylinder unit is delivered on a wooden pallet base with cardboard protection.
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 has
reached its final 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..>.
• The cylinder unit should ALWAYS be moved by a minimum of 2 people.
• When carrying the cylinder use the handles provided.
• Before using the handles, make sure they are securely attached.
• Please remove front handle, fixing legs, wooden base and any other pack-
aging once the unit is in installation location.
• Keep the handles for future transportation.

Suitable location

Before installation the cylinder unit should be stored in a frost-free weather-
proof location. Units must nOt be stacked.
• The cylinder unit should be installed indoors in a frost free weather proof loca-
tion.
• The cylinder unit should be positioned on a level surface capable of supporting
it's filled weight. (Adjustable feet (accessory parts) can be used to ensure unit is
level)
• When using the adjustable feet, ensure that the floor is strong enough.
• Care should be taken that minimum distances around the unit for service ac-
cess are observed <Figure 4..2>.
• Secure the cylinder unit to prevent it being knocked over accidentally or during
earthquakes.
• Install the cylinder unit where it is not exposed to water.
Leg

Service access diagrams

Service access
Parameter
a
b
c (distance behind unit not visible
in Figure 4.1.2)
d
<Table 4..>
Sufficient space MUST be left for the provision of discharge pipework as detailed
in National and Local building regulations.
a
b
<Figure 4..2>
Service access
The cylinder unit must be located indoors and in a frost-free environment, for
example in a utility room, to minimise heat loss from stored water.

room thermostat

If fitting a new room thermostat for this system;
• Position out of direct sunlight and draughts
• Position away from internal heat sources
• Position in a room without a TRV on the radiator
• Position on an internal wall
Note: Do not position the thermostat excessively close to the wall. The thermostat
may detect the temperature of the wall, which could prevent appropriate
control over the room temperature.
• Position approx. 1.5 m from floor level

repositioning

If you need to move the cylinder unit to a new position FULLY DRAIN the cylinder
and the internal coil before moving to avoid damage to the unit.
Dimension (mm)
300
50
0
500
b
d
2