A.O. Smith BFM - 100, BFM - 120 manual Circulation pipe, Gas connection

3

Installation

C

is

IMD-0122 R1

3.7.5Circulation pipe

See (C) in the installation diagram (3.5 "Installation diagram").

If an immediate flow of hot water is required at draw-off points, a circulation pump can be installed. This improves comfort and reduces water wastage.

1.Fit a circulation pump (6) of the correct capacity for the length and resistance of the circulation system.

2.Fit a non-return valve (5) behind the circulation pump to guarantee the direction of circulation.

3.Fit two stop valves for service purposes (4).

4.Connect the circulation pipe to the T-piece at the drain valve (9) as shown in the drain valve figure (3.6.4 "Drain valve").

3.8 Gas connection Warning

The installation should be carried out by an authorised installation engineer, in compliance with general and local regulations (1.3 "Regulations").

Caution

Make sure that the diameter and length of the gas supply pipe are large enough to supply sufficient capacity to the appliance.

See (D) in the installation diagram (3.5 "Installation diagram").

1.Fit a manual gas valve (10) in the gas supply pipe.

2.Blow the gas pipe clean before use.

3.Close the manual gas valve.

4.Fit the gas supply pipe to the gas control.

Warning

After fitting, check for leaks.

26 Instruction manual BFM