A.O. Smith CAHP-120 Series, Руководство пользователя

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14
4 Electrical Connection Instructions
4.1 Important Information
Only special power supply applies to the water heater, and the maximum fluctuated
voltage value should be within the range of 90% to 110% of nominal voltage.
The conductor arrangement should be performed by a qualified electrician and comply
with the requirement of electrical safety.
The water heater and power supply should be properly grounded. Otherwise it can result
in fire or electric shock.
Keep the power cord and the signal wires tidy and rational. Separate the wires of
hazardous voltage electrical circuits from the wires of extra-low-voltage circuits, and they
should not disturb each other. Keep all the cables and wires free from the piping and valves.
The power cord outside the unit should be isolated properly to prevent people contacting
them, or ensure the touch would not result in electric shock (touchable double insulation
cable could be used or add insulation to normal power cord).
4.2 Power Cord Connection
1. Select power cord for CAHP80/120 units according to the unit model and the power supply
with reference to table 4.1. Select power cord for CAHP120C units according to table 4.2.
Table 4.1 Power Supply Specification for CAHP80/120
Unit
Model
Power
Supply
Cable Size (mm
2
)
(Plastic Insulation and Conduit)
Air Breaker
Capacity (A)
Current
Leakage
Protection
Two Elements
Working Mode
One Element
Working Mode
Two
Elements
One
Element Phase
Wire
Neutral
Wire
Ground
Wire
Phase
Wire
Neutral
Wire
Ground
Wire
CAHP-80-6
CAHP-120-6
380V
3N~60Hz
•
2.5
•
2.5
•
2.5
•
2.5
•
2.5
•
2.5 25 25
30mA
Less than
0.1s
220V~
1N~60Hz
• 10 • 10 • 10 • 6 • 6 • 6 50 30
400V
3N~50Hz
•
2.5
•
2.5
•
2.5
•
2.5
•
2.5
•
2.5 25 25
230V~
1N~50Hz
• 10 • 10 • 10 • 6 • 6 • 6 50 30
CAHP-80-8
CAHP-120-8
380V
3N~60Hz
•
4
•
2.5
•
4
•
4
•
2.5
•
4 30 30
220V~
1N~60Hz
• 10 • 10 • 10 • 10 • 10 • 10 60 40
400V
3N~50Hz
• 4 • 2.5 • 4 • 4 • 2.5 • 4 30 30
230V~
1N~50Hz
•
10
•
10
•
10
•
10
•
10
•
10 60 40