A.O. Smith Cyclone BFC-28, Installation, User And Service Manual, Page: 29 / 104

Instruction manual BFC 27
is
3.7 Vented water
connections Warning
The installation should be carried out by a competent person, in compliance
with general and locally applicable regulations (1.3 "Regulations").
3.7.1 Cold water side
See (A) in the installation diagram (3.5 "Installation diagram").
1. Fit an approved stop valve (4) on the cold water side between the cold water
head tank (18) and the water heater, as required by applicable regulations.
3.7.2 Hot water side
See (B) in the installation diagram (3.5 "Installation diagram").
Note
Insulating long hot water pipes prevents unnecessary energy loss.
1. Fit the T&P valve (3).
2. Optional: fit a temperature gauge (12) so you can check the temperature of
the tap water.
3. Fit a stop valve (4) in the hot water outlet pipe for servicing.
4. If a circulation pipe is required, continue by installing the circulation
pipe (3.6.3 "Circulation pipe").
3.7.3 Circulation 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) after the circulation pump to guarantee the
direction of circulation.
3. Fit two stop valves for servicing (4).
4. Connect the circulation pipe according to the installation
diagram (3.5 "Installation diagram").
3.7.4 Condensation drain
1. Fit a sloping waste water pipe to the condens trap (13) for condensation
drainage and connect this via an open connection to the waste water
discharge.
Caution
If the condensation drain is not fitted to the waste water discharge using an
open connection, this can cause faults.
3.8 Gas connection
Warning
The installation should be carried out by a competent person, in compliance
with general and locally applicable 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 water heater.