Lochinvar EcoSword LGC 160-210 G P CE, Installation, Commissioning, User & Maintenance Instructions

Page: 48 / 94

The mains power and optional electrical connections have to be connected to the terminal
block of the controller, refer to Structure of the water heater (see 7.1).
Fig. Terminal block
1. Tulles
2. Pull relieves
3. Connections
8.8.2 Mains power
Note
The water heater is supplied without a power cable and isolator.
Use a power cable with cores of at least 3 x 0,75 mm
2
and an overvoltage category III,
double–pole isolator with a contact gap of at least 3 mm. The double–pole isolator must
be incorporated in the fixed wiring in accordance with the wiring rules.
Connect the water heater to the mains power supply:
1.
Pull the power cable through the tulles.
2. Connect the mains neutral core to N, the mains live core to L and the mains earth
core to
A
.
3. Install the power cable in the pull relief under the electrical section.
4. Connect the power cable to the double pole isolator.
8.8.3 Optional electrical connections
Optionally, it is possible to:
• Connect an isolating transformer (see 8.8.3.1).
• Connect an external ON mode switch (see 3.2.1.3).
• Connect an additional error signal to the water heater.
8.8.3.1 Isolating transformer
For more information about an isolating transformer, or to order an isolating transformer,
please contact Lochinvar.
8.8.3.2 External ON mode switch
Install an external ON mode switch:
1.
Pull the cables through the tulles.
2. Connect the cables to X3 and X4.
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48 Installation, Maintenance and Service part