Installation; Location; Water Quality And System Preparation - Mitsubishi Electric ecodan EHPT20Q-VM2EA Installation Manual

Cylinder unit
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4

Installation

<Preparation before the installation and service>
electrical parts.
<Precautions during service>
electrical parts with wet hands.
electrical parts.

4.1 Location

Transportation and Handling
Fixing legs
Attaching position of adjustable
feet (accessory parts)
<Figure 4.1.1>
Cylinder unit is delivered on a wooden pallet base with cardboard protection.
has reached its final location. This will help protect the structure and control panel.
ported
UPWARDS<Figure
4.1.1>.
Please carefully remove
Suitable Location
efore installation the cylinder unit should be stored in a frost free weather
NOT
tion.
only where the difference in height between the cylinder
it s filled weight. (Adjustable feet (accessory parts) can be used to ensure unit is
level) (see Figure 4.1.1)
stabilise the unit. And weight load should be evenly spread.
service access are observed <Figure 4.1.2>.
it from potentially being
10
Service access diagrams
Service access
Parameter
Dimension (mm)
a
300
b
c
(distance behind unit not visible
10
in Figure 4.1.2)
d
<Table 4.1.1>
a
b
b
d
<Figure 4.1.2>
trans
Service access
Room Thermostat
Note: Do not position the thermostat excessively close to the external
wall. The thermostat may detect the temperature of the wall, which
could affect appropriate control of the room temperature.
Repositioning
der unit before moving to avoid damage to the unit.
building fabrics (floor and wall finishes).
4
Installation

4.2 Water Quality and System Preparation

General
should be clean and
with pH
;
Anti-Freeze
Anti-freeze solution
be
Note:
1. Ethylene glycol anti-freeze is TOXIC. Therefore it MUST NOT be used in the
primary water circuit in case of any cross-contamination of the secondary
(potable) circuit.
2. For 2-zone valve ON/OFF control, propylene glycol solution MUST be used.
New Installation (primary water circuit)
solder etc using a suitable chemical cleansing agent.
Add
Existing Installation (primary water circuit)
existing dirt and debris from the heating circuit.
manufacturer's
instructions and ensure the product is appropriate for the materials used in the
water circuit
How to access Internal Components and Control
and Electrical Box
<A> Opening the front panel
2.
board
<B> Accessing the back of control and electrical box
The control and electrical box has four holding screws and is hinged on the right
hand side.
2. The control and electrical box can then be
on the right
hand hinges.
Note:
After servicing, re-assemble and re-secure all cables using straps provided.
Reconnect main controller cable to its relay connector. Replace front panel
and re-secure screws at base.
Minimum amount of water required
 in the space heating circuit
32 L
should be included.
circuit
Thermal store tank
circuit
<Table 4.2.1>
<A>
<B>
screws
Front panel
Hinges
Open
screws
<Figure 4.2.1>
11

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