A.O. Smith 28 30 50 60 Benutzerhandbuch

Release R.1.3 UK

27

is

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

Check for leaks after fitting.

The installation should be carried out by an authorised installer, in 
compliance with the general and local regulations imposed by gas, water 
supply and power supply companies and the fire service. Refer also to 
paragraph 

.

Depending on the approved installation types, there are several alternatives 
for connecting the air supply and flue gas discharge. The BFC appliances are 
approved for installation types C13, C33, C43, C53 and C63.
The most common installation types are:
•

C13: 

 and 

•

C33: 

. 

This manual describes these installation types. If an explanation of other types 
of installation is required, please contact A.O. Smith.

c

A.O. Smith prescribes the use of a roof or wall-mounted terminal, 
exclusively of a type approved for the appliance. See paragraph 

 and 

. 

Use of an incorrect roof or wall-mounted terminal can cause the installation 
to malfunction.

n

Make sure that the chimney discharges into an area where this is permitted 
for this category of appliance.

 shows the maximum length of the chimney configurations. The 

following requirements must also be fulfilled:
•

the maximum chimney length is 15 metres. 

•

The maximum permitted number of 45° or 90° bends is four.      

c

If you make use of horizontal piping, then this must slope towards the 
appliance with a minimum of 5 mm per metre running length!

Table 3.7 Chimney configurations for concentric wall and roof 
termination.

A

0-15 m

0-15 m

0-15 m

0-15 m

B

0-15 m

0-15 m

0-15 m

0-15 m

a + B

max. 15 m

max. 15 m

max. 15 m

max. 15 m