Mitsubishi Heavy Industries FDCW100VNX, Technical Manual

Page: 25 / 173

Installation
- 24 -
Manual shunting
When HM270V is set to emergency mode on the main
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1. Depress and lock the button on the valve.
2. Turn the mixing valve to the desired position by hand.
Button
Knob
Valve
In the emergency mode, the valve position setting should be
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QM30 : Horizontal (Closed)
QM31 : Vertical (Open)
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QM30
QM31
QN11
Emptying the vessel
The vessel in HM270V is emptied by opening the valve (QM1)
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NOTE
When the vessel in HM270V is emptied via the valve
(QM1), some water will remain in the coil and in the
heat exchanger.
This means that there is a risk o f the heat exchanger,
pipes and valves f reezing at low temperatures as well
as a hygienic risk f or the coil in the hot water section.
QM1
Recommended installation order
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Also see docking descriptions on page 27 and further on.
2. Install the refrigerant pipes according to the description on
the Installation manual for outdoor unit.
3. Connect the current limiter, any centralised load control
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Indoor unit installation