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7. HYDRO UNIT INSTALLATION MANUAL
Engineering Data Book
7
Electrical Installation
WARNING
• Ensure electrical circuits are isolated before commencing the electrical installation.
• The electrical installation must be completed by a qualified electrician.
• The electrical installation must comply to all Local, National and International electrical installation regulations.
• This product must be earthed in accordance with Local, National and International electrical installation regulations.
CAUTION
• The Hydro Unit must be connected to a dedicated power supply for the back up heater circuit.
• The electrical supply must be protected by a suitably sized over current protection device (fuse, MCB etc) and an
earth leakage protection device.
• The Hydro Unit must be connected to the mains power supply using a isolating switch which disconnects all poles
and has a contact separation of at least 3 mm.
• The cord clamps, attached to the Hydro Unit, must be used to secure the electrical cables.
• Wrong connection of electrical cables may result in electrical component failure or fire.
• Ensure the electrical cables are sized in accordance with the installation instructions.
Power line
1
2
3
1
2
3
1
2
1
2
L
N
L
N
TB03
TB01
L
N
TB02
TB02
N
L1
L1
L3
L2
Backup heater
230 V ~ (3 kW type)
Backup heater
400 V 3N ~ (6.9 kW type)
Input power
230 V ~
50 Hz
Input power
400 V 3N ~
50 Hz
Leakage
breaker 30 mA
Leakage
breaker 30 mA
Hot water cylinder
Input power for
cylinder heater
230 V ~ 50 Hz
Leakage
breaker
30 mA
Hydro unit
Outdoor unit
Leakage
breaker
30 mA
Input power
230 V ~
50 Hz
▼
Fig. 7-19
20-EN
Summary of Contents for ESTIA HWS-1102H-E
Page 3: ...2 1 INTRODUCTION ...
Page 7: ...6 2 SYSTEM OVERVIEW ...
Page 10: ...9 3 SYSTEM SPECIFICATION ...
Page 12: ...11 4 HYDRO UNIT ...
Page 44: ...43 5 OUTDOOR UNIT ...
Page 57: ...56 6 HOT WATER CYLINDER ...
Page 63: ...62 7 HYDRO UNIT INSTALLATION MANUAL ...
Page 107: ...105 8 OUTDOOR UNIT INSTALLATION MANUAL ...
Page 131: ...129 9 OWNER S MANUAL ...
Page 146: ...Air to Water Heat Pump Engineering Data Book Aug 2009 ...