Data Section; Description; Heat Exchanger; Combustion Chamber And Burner - Potterton Flamingo RS40 Installation And Service Manual

DATA SECTION – Page 2
GENERALPotterton Flamingo room sealed appliances are auto-matically controlled and have been
designed for combined systems, e.g. small bore or microbore central heating with an indirect domestic hot
water supply which can either have pumped or gravity circulation. These boilers can also be used on a
pumped central heating or domestic hot water only system.
DESCRIPTION See Figure 1 and 3.
The boiler is a slim, space saving appliance which must be installed on the inside of an external wall,
either in a kitchen or utility room or inside a suitably ventilated purpose designed or modified compartment.
The boilers apart from their controls are enclosed in a white, stove enamelled, sheet steel casing. The
controls are mounted beneath the casing in a drawer shaped saluki-bronze cover. Side panels, to blank off
the space between the boiler and the wall are available as optional extras. Also available as an optional
extra, is a casing extension which is fitted on top of the existing boiler casing to enclose a circulating pump
and its pipework.

HEAT EXCHANGER

RS50S
The heat exchanger consists of individual cast iron sections which are jointed with '0 rings and bolted
together to form flueways and water-ways. The heat exchanger has flow connections at the top and return
connections at the bottom, located at the rear of the assembly. The boiler thermostat phial is fitted at the
front of the boiler in a pocket screwed into the section. The flue hood, mounted on top of the heat
exchanger, directs the flue gases into the balanced flue ductinq from where the gases are vented to
atmosphere through the terminal on the outside wall of the building.
RS40
The heat exchanger is a single 'Monobloc' casting which features two finned flueways and three
waterways, with two flow connections and two return connections. The boiler thermostat phial is located in
a pocket at the front, upper left hand side of the heat exchanger. A flue-hood mounted on the top of the
heat exchanger, directs the flue gases through the boiler backplate into the balanced flue ducting, from
where gases are vented to atmosphere through the terminal on the outside wall of the building.

COMBUSTION CHAMBER AND BURNER

The combustion chamber is a welded rectangular shaped box secured to the under-side of the heat
exchanger. A removable cover on the front of the chamber gives access to the laterally mounted single
bar, aerated main burner. A bracket which supports the right-hand end of the main burner, also mounts the
pilot burner, thermocouple and ignition electrode (on Flamingo RS50S boiler the pilot mounting bracket is
attached to the burner). The combustion chamber has an opening at the top to allow the products of
combustion to pass through the heat exchanger, and another in its rear face to let in fresh air from the air
duct at the rear of the boiler: the air duct connects to the air inlet of the balanced flue terminal.

BOILER CONTROLS

The control system situated at the base of the appliance has been simply designed and is fail safe and
easy to operate. It consists of a multifunctional gas control which includes a thermoelectric flame failure
device controlled from a thermocouple and pilot burner. The main burner is controlled electrically by a
boiler thermostat and a solenoid incorporated into the multifunctional control. Ignition of the pilot burner is
by operation of a Piezo-Electric.
THE SYSTEM See Figures 6 to 10
The boiler can be installed in most types of system but the following notes are given as a general guide.
The general recommendations given in BS. 5376 and BS. 5449 Part 1 should be observed.