Flue Terminal Location; The System - Potterton Suprima 100 Installation & Service Instructions Manual

Installation Requirements - Page 8
1.8

Flue Terminal Location

If a horizontal flue is sited less than 2m above a balcony, above ground, or above a flat roof to which people have access, a
suitable terminal guard must be fitted. This serves two purposes, to protect the terminal against damage or interference and to
protect passers-by. A terminal guard is available (Sales Code: PTERMGUARDEF).
Note: Where a flue terminal is installed less than 1 metre from a plastic, or painted gutter, or 500mm from painted eaves, an
aluminium shield 1 metre long, should be fitted to the underside of the gutter or painted surface. A suitable wall plate should be
fitted to the painted wall surface of a mobile home.
IMPORTANT: It is absolutely ESSENTIAL, to ensure that products of combustion discharging from the terminal cannot re-enter the
building, or any other adjacent building, through ventilators, windows, doors, natural air infiltration, or forced ventilation/air
conditioning. If products of combustion are found to be re-entering any building, the appliance MUST be turned OFF
IMMEDIATELY.
Horizontal Flues
A
B ,C
A
F
E
G
G
Flue
Terminals
Below Carport
R
A
Q
P
N
Vertical Flues
1.9

The System

The boiler must be used on Indirect Fully Pumped systems only,
which may be sealed or open vented.
The system should be designed so that the maximum static
head does not exceed 30.5m (100ft) and a minimum of 150mm
(6in).
On all systems the pump live connection should be wired to the
boiler terminal block, it will then be controlled by the pump over-
run. This will ensure that the pump will continue to run after
boiler shut down if the water temperature is high, thus
preventing nuisance operation of the overheat thermostat.
C
B ,C
K
K
L L
K
F F
F F
G
G
D
J
F
K
H,I
G
N
N
S
Q
POSITION
HORIZONTAL FLUES
A DIRECTLY BELOW AN OPENABLE
WINDOW, AIR VENT, OR ANY OTHER
VENTILATION OPENING
B BELOW GUTTER, DRAIN/SOIL PIPE
C BELOW EAVES
D BELOW A BALCONY/CARPORT ROOF
E FROM VERTICAL DRAIN PIPES AND
SOIL PIPES
F FROM INTERNAL OR EXTERNAL CORNERS
G ABOVE ADJACENT GROUND OR BALCONY
LEVEL
H FROM A SURFACE FACING THE TERMINAL
I FACING TERMINALS
J FROM OPENING (DOOR/WINDOW) IN
CARPORT INTO DWELLING
K VERTICALLY FROM A TERMINAL ON THE
SAME WALL
L HORIZONTALLY FROM A TERMINAL ON
THE SAME WALL
N ABOVE ROOF LEVEL (TO BASE OF TERMINAL)
P FROM ADJACENT WALL TO FLUE
Q FROM INTERNAL CORNER TO FLUE
R BELOW EAVES OR BALCONY
S FROM FACING TERMINAL
It is important that where electrically operated zone valves
are used the boiler is wired so it does not cycle when the
zone valves are closed. Also, systems fitted with controls
that close both hot water and central heating circuits while
the boiler is still hot, must be fitted with a by-pass circuit to
dissipate the residual heat from within the boiler.
If a three port valve is used as shown in Fig. 3 a by-pass is
not necessary since one circuit is always open.
Where a pair of two port valves are used, a by-pass is
necessary. The total length of the by-pass circuit taken from
the boiler connections should be greater than 4 metres of
22mm pipe. It should be fitted with a lockshield valve and
be adjusted to maintain a minimum flow through the boiler
of 4.5litres/min (1 gal/min).
MIN. DISTANCE mm
TO EDGE OF TERMINAL
300
25
25
25
25
100
300
600
1,200
1,200
1,500
300
300
210
230
600
1,200