Sime Format 30 HE Installation And Servicing Instructions page 10

2.4 CHARACTERISTICS
OF FEEDWATER
– All recirculatory systems will be subject
to corrosion unless an appropriate
water treatment is applied. This means
that the efficiency of the system will
deteriorate as corrosion sludge accu-
mulates within the system, risking dam-
age to pump and valves, boiler noise
and circulation problems.
– For optimum performance after installa-
tion this boiler and its associated central
heating syst em must be flushed in
accordance with the guidelines given in
BS 7593 "Treatment of water in domes-
tic hot water central heating systems".
– This must involve the use of a propri-
etary cleanser, such as Sentinel X300
or X400, or Fernox Super floc. Full
instructions are supplied with the prod-
ucts, but for immediate information
please contact GE Betz (0151 420
9563) or Fernox (01799 550 811)
directly.
– For long term protection against corro-
sion and scale, after flushing it is rec-
ommended that an inhibitor such as
Sentinel X100, or Fernox MB-1 or Copal
is dosed in accordance with the guide-
lines given in BS 7593.
Failure to flush and add inhibitor to
the system may invalidate the appli-
ance warranty.
– It is important to check the inhibitor
concentration after installation, system
modification and at every service in
accordance with the manufacturer's
instructions. (Test kits are available
from inhibitor stockists).
– At every service the Aquaguard Filter
(4.9) should be checked and cleaned.
TABLE 3
Terminal position
A Directly below an openable window, air vent
or any other ventilation opening
B Below guttering, drain pipes or soil pipes
C/D Below eaves, balconies or carport roof
E From vertical drain pipes or soil pipes
F From internal or external corners
G Above adjacent ground, roof or balcony level
H From a surface facing the terminal
I From a terminal facing the terminal
J From an opening in the carport
(eg door, window into dwelling)
K Vertically from a terminal on the same wall
L Horizontally from a terminal on the same wall
M Horizontally from a vertical terminal to a wall
N Horizontally from an openable window or other opening 300 mm 12 in
P Above an openable window or other opening
– If the terminal discharges into a pathway or passageway check that combustion products will not cause nuisance and that the terminal
will not obstruct the passageway.
– Where the lowest part of the terminal is fitted less than 2 m (78 in) above ground, above a balcony or above a flat roof to which people
have access, the terminal MUST be protected by a purpose designed guard. Terminal guards are available from Quinnell, Barrett, and
Quinnell, Old Kent Road, London. State model C2, (G.C. Part No 382946).
– Where the terminal is fitted within 850 mm (34 in) of a plastic or painted gutter, or 450 mm (18 in) of painted eaves, an aluminium shield
at least 1,500 mm (59 in) long must be fitted to the underside of the painted surface.
– The air inlet/outlet flue duct MUST NOT be closer than 25 mm (1 in) to combustible material.
– In certain weather conditions the terminal may emit a plume of steam. This is normal but positions where this would cause a nuisance
should be avoided.
10
KEY
1a-b Coaxial duct kit code 8096250
2 Extension L. 1000 code 8096150
3 Vertical extension L. 140
with take-off point code 8086950
4 90° additional bend code 8095850
NOTE: Place the duct horizontally.
NOTE: Before installing accessories, lubricate
the internal part of gaskets with silicon-based
products. Avoid using oils and greases.
2.5 COAXIAL DUCT ø 60/100
The air inlet-smoke outlet assembly, code
8096250, is included in the standard sup-
ply of the appliance complete with mounting
instructions. NOTE: to use only special
accessories for condensing boilers.
2.5. 1 Coaxial duct accessories
The accessories to be used for this type of
installation and some of the connecting sys-
tems that may be adopted are illustrated in
fig. 5. With the pipe bend included in the
kit, the maximum length of the piping
should not exceed 4.6 meter. Where the
Minimum spacing
300 mm 12 in
75 mm 3 in
200 mm 8 in
75 mm 3 in
300 mm 12 in
300 mm 12 in
600 mm 24 in
1,200 mm 48 in
1,200 mm 48 in
1,500 mm 60 in
300 mm 12 in
300 mm 12 in
300 mm 12 in
max 4.6 m
supplementary bend code 8095850 is
used, the total length of the piping can
reach a maximum of 2.9 meter. When the
vertical extension code 8086950 is used,
the terminal part of the pipe must always
come out horizontally.
2.5.2 Positioning the outlet terminals
The outlet terminals for forced-draught
appliances may be located in the external
perimeter walls of the building.
To provide some indications of possible solu-
tions, Table 3 gives the minimum distances
to be observed, with reference to the type
of building shown in fig. 6.
Fig. 5
Fig. 6