A.O. Smith BFC -100, BFC - 80 Connecting the mains voltage, Isolating transformer, Preparation

Models: BFC - 80 BFC -100

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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

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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.

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Instruction manual BFC

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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.

The A.O. Smith BFC-100 and BFC-80 are distinguished by their high capacity and robust design. The BFC-100 model boasts a capacity of 100 gallons, while the BFC-80 is ideal for those requiring 80 gallons. This makes them suitable for larger households or commercial establishments where hot water demand can be significant.

One of the primary features of these models is their advanced heating technology. Both units utilize a high-efficiency burner that ensures rapid heating and minimal energy consumption. This means users benefit from shorter wait times for hot water, reducing overall energy costs. The BFC series is also equipped with a special flame retention head that enhances combustion efficiency and prolongs the lifespan of the unit.

In terms of construction, the BFC-100 and BFC-80 models are built with high-quality materials that enhance durability and resistance to corrosion. The tanks are insulated with high-density foam, which improves energy retention and helps maintain water temperature for longer periods. This is crucial for conserving energy and minimizing heating costs.

Safety is a top priority for A.O. Smith, and the BFC series reflects this commitment. Each unit comes with a range of safety features, including a temperature and pressure relief valve that prevents overheating and excessive pressure buildup. Additionally, they are designed to meet strict industry standards, ensuring peace of mind for users.

Installation of both models is straightforward, with flexible venting options that accommodate various building layouts. Whether you are upgrading an existing water heating system or installing a new one, the BFC series is designed to integrate seamlessly.

In summary, the A.O. Smith BFC-100 and BFC-80 are excellent options for those seeking reliable, efficient, and durable water heating solutions. With their impressive capacity, advanced heating technology, robust construction, and safety features, these models stand out in the market and are sure to meet the hot water needs of any household or commercial space. Whether for residential use or in a business setting, A.O. Smith’s BFC series represents quality and innovation in hot water heating.