3

Installation

is

 

In preparation, you must first remove the two plastic covers and the protective cap of the electrical section.

1.Undo the screws of the plastic covers.

2.Carefully remove the covers from the appliance. The electrical section is now visible.

3.Loosen the 2 screws (A) of the electrical section, and remove the protective cap (B) from the electrical section.

The connector block (C) is now visible.

Note

Consult the table for the connections and consult the electrical diagram for the electrical component connections.

Electrical connector block

 

Circulation

Frequency

Tank

Program-

 

 

 

 

 

 

 

 

 

 

 

 

Mains

 

 

controlled

Alarm Off

 

Isolating transformer

 

 

 

 

 

pump

 

controller

 

ON

 

 

voltage

 

 

 

 

 

pump

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

primary

secondary

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

 

 

L5

 

N

 

L4

N

X3

X4

N

L3

 

 

X1

X2

 

N

L2

 

N

L1

 

 

L

N

 

 

1

2

 

3

 

4

5

6

7

8

 

9

10

 

11

 

12

13

14

15

16

 

17

18

19

20

 

21

22

 

23

 

24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.10.3Connecting the mains voltage

The appliance is supplied without a power cable and isolator.

Note

In order to receive electrical power, the appliance has to be connected to the mains power by means of a permanent electrical connection. A double-pole isolator with a contact gap of at least 3 mm must be fitted between this permanent connection and the appliance. The power cable must have cores of at least 3 x 1.0 mm2.

Warning

Leave the appliance isolated until you are ready to start it up.

1.Connect phase (L), neutral (N) and earth () of the power cable to terminals 22 through 24 of the connection block as indicated in the

table (3.10.2 "Preparation").

2.Fit the power cable in the strain relief.

3.Connect the power cable to the isolator.

4.If you have no more connections to make:

-Fit the cap on the electrical terminal block.

-Fit the plastic covers onto the appliance.

3.10.4Isolating transformer

An isolating transformer should be used if there is a case of 'floating neutral'.

1.Refer to fitting instructions provided with the isolating transformer. (Contact the supplier for details of the correct isolating transformer.)

2.Connect phase (L), neutral (N) and earth () to terminals 16 through 21 of the terminal block as stated in the table (3.10.2 "Preparation").

3.Fit the cables in the strain relief.

34

Instruction manual BFC

Page 34
Image 34
A.O. Smith BFC -100, BFC - 80 service manual Connecting the mains voltage, Isolating transformer, Preparation

BFC - 80, BFC -100 specifications

A.O. Smith is a renowned name in the water heater industry, and its BFC series, which includes the BFC-100 and BFC-80 models, exemplifies their commitment to innovation and efficiency. These units are designed to meet the demanding needs of both residential and commercial applications, providing reliable hot water solutions.

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