SKG3 Gas Fired Humidifier
Installation Instructions and User Manual
30
Stage 8 – Electrical Supply and Installation
Electrical
Power Supply
The SKG3 Steam Humidifier requires a 120, 208 or 240V single phase supply.
Model
Voltage (V)
Standard
Current (A)
Weather proof
enclosure
option (A)
SKG3
110, 155, 180, 210
120
– 1ph
6.0
7.2
208
– 1ph
3.5
4.2
240
– 1ph
3.0
3.6
SKG3
265, 310, 350, 405
120
– 1ph
9.0
11.4
208
– 1ph
5.2
6.6
240
– 1ph
4.5
5.8
SKG3
505, 560, 610
120
– 1ph
12.0
15.6
208
– 1ph
7.0
9.0
240
– 1ph
6.0
7.8
SKG3
710, 765, 810
120
– 1ph
15.0
19.0
208
– 1ph
8.7
11.0
240
– 1ph
7.5
9.5
All incoming power supplies MUST be externally fused for over current protection.
The electrical supply must also be isolated for the purpose of emergency and servicing.
A disconnect switch must typically be installed within one meter of the humidifier.
The isolator must have a contact separation of at least
1/8’’ (3mm).
Electrical
connection
All work related to electrical installation MUST only be performed by skilled and
qualified technical personnel (e.g. electrician or technicians with appropriate training).
Please observe local codes and regulations concerning the provision of electrical
installations.
WARNING
. Risk of electric Shock. Ensure that the electrical supply is isolated before
beginning any installation.
The installation engineer must ensure the following:
Use of copper power conductor only.
Size of the power conductors are suitable for the maximum current supplied.
Incoming power cable is secured via suitably sized cable gland.
Each terminal connection is secured firmly with a cable ferrule.
Humidifier cabinet has an uninterrupted or unbroken electrical ground.
Do not use gas piping as an electrical ground.
Electrical connection - Fig. 40
!
Alarm contacts
terminal
Interlocks & control
signal terminal
Power supply
terminal
Main Fuse
L N
GND
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