Ambirad COBRA CB40 Руководство по установке, эксплуатации, техническому обслуживанию и ремонту - Страница 8
Просмотреть онлайн или скачать pdf Руководство по установке, эксплуатации, техническому обслуживанию и ремонту для Газовый обогреватель Ambirad COBRA CB40. Ambirad COBRA CB40 19 страниц. Gas fired radiant tube heaters
9 Flue connection
Flue technical details
Model
Gas type
Mass flow rate of flue gases (kg/s)
Flue gas temperature (˚C) @ flue outlet
Flue pressure (Pa) Positive
Figure 5
C o n n e c t i o n
Air Inlet
to Fan
Flue Outlet
The flexible duct supplied MUST be
fitted between re-circulation air and fan
spigot with pipe clamps as provided.
The Cobra heater may be installed with or
without a flue to the atmosphere
providing the air supply and building
ventilation requirements as stated in BS
6896: 1991 are complied with and
providing due consideration is given to the
possibilities of condensation forming on
cold surfaces when used as an unflued
heater.
Unflued installation
For unflued heaters (UK Only) a fan baffle
must be attached to the fan outlet.
(Part No 201301).
Permanent ventilation required is as
follows:
Natural ventilation
(To be fitted at high and low level with
minimum distance between 3m).
Low level, when air change rate is less
than 33m
/h/kW of total rated input,
3
either: 1.4cm
for each 1m
/h/kW below
2
3
33m
/h/kW or 46cm
/kW of total rated
3
2
input.
High level, above areas where personnel
are working is as above.
Mechanical ventilation
Minimum proven air flow is 33m
total rated heated input.
6
CB40
Natural Gas (G20)
0.0185
If the heater is installed without a flue,
ensure that combustion gases do not
impinge on combustible materials. The
maximum permitted temperature for such
materials is 50˚C. EN416.
Flued installation
The Cobra heater may be installed with a
fixed flue. A flue kit fitting (supplied as an
optional extra by the manufacturer) must
be fitted to the flue exit, this kit connects
from the flue outlet to a 5" adaptor. The
flue fitting is designed to accept either 5"
single wall or 5" twin wall.
Propriety twin wall metal joints should be
sealed with heat resistant caulking and
faced off with fire cement.
The flue pipe should be adequately
supported at regular intervals from the
building structure and terminated
externally with a British Gas Tested and
Certified terminal.
The maximum flue length is 7m and the
maximum number of bends is two on
individually flued appliances. The flue may
be installed vertically or horizontally, but
must be terminated vertically. All
connections in the flue pipe must be
properly sealed.
Natural ventilation
(Preferably at low level)
Up to and including 60kW: 4.5cm
Over 60kW:270cm
of 60kW total rated input.
Forced ventilation
Minimum proven air flow is 2.35m
of total rated input.
For detailed information please refer to BS:
6896:1991, Installation of Gas Fired
Overhead Radiant Heaters for Industrial
and Commercial heating (2nd and 3rd)
family gases.
/h/kW of
3
240
120
/kW.
2
+ 2.25cm
/kW in excess
2
2
/h/kW
3
For calculation method for flue sizing see
Appendix 1 on page 14.
For Herringbone flued heaters see section
14.