Lochinvar CP-M Series, Инструкции по установке, пусконаладке и обслуживанию

Страница: 31 / 94

31
If a positive pressure common flue system is to be used, a proprietary recirculation prevention device must be installed at the flue
spigot of each boiler to prevent products of combustion from re-entering the plant room.
A cascaded common flue system which operates on a positive pressure is available from Lochinvar Limited. Further details can
be found in the Cascade Flue Systems guide, available from
www.lochinvar.ltd.uk .
8.9 FLUE TERMINAL GUARDING
If a horizontal flue terminal is to be fitted less than 2 metres from ground level or in a location where it can be touched from a
window, door or balcony, a terminal guard must be fitted. The terminal guard should be positioned centrally around the terminal
and secured using appropriate wall fixings. An approved terminal guard is available; please contact Lochinvar Limited for further
information.
8.10 CONDENSATE DRAIN
For flue runs of less than 6 metres, provided that the flue system rises at an angle of at least 3

(50mm per metre), no additional
condensate drain will be required. Failure to provide an adequate rise in the flue system may lead to pooling of condensate which
may lead to premature failure of the flue system.
If the flue run is greater than 6 metres, it is recommended that an inline condensate drain and trap be fitted. The condensate trap
should be connected to a suitable drainage system as described in
Section 6.5: CONDENSATE DRAIN
Where a common flue is used, precautions should be taken to ensure that all condensation formed in the flue system is not
drained through one boiler. It is recommended that a condensate drain point is installed in the common flue header and
connected to a suitable drainage system.
9.0 AIR SUPPLY
The following information is based on single boiler installations only. If more than one boiler is being used,
BS6644 should be
consulted to calculate the necessary requirements.
9.1 COMBUSTION VENTILATION
When used as a Type C appliance, ventilation for combustion is not necessary as the combustion air is ducted directly from
outside.
When used as a Type B appliance, the combustion air requirements are as follows:
Model
Gross
Input
(kW)
Net
Input
(kW)
Ventilation
(Room)
(cm
2
)
Compartment Compartment
(Direct to Outside) (To Internal Space)
High
(cm
2
)
Low
(cm
2
)
High
(cm
2
)
Low
(cm
2
)
CP-M+60 62.2 56.0 245 280 560 560 1120
TABLE 9.1 COMBUSTION VENTILATION REQUIREMENTS – CP-M+60
Model
Gross
Input
(kW)
Net
Input
(kW)
Plant Room Enclosure
Low
Summer Use
Medium
Summer Use
High
Summer Use
Low
Summer Use
Medium
Summer Use
High
Summer Use
High
(cm
2
)
Low
(cm
2
)
High
(cm
2
)
Low
(cm
2
)
High
(cm
2
)
Low
(cm
2
)
High
(cm
2
)
Low
(cm
2
)
High
(cm
2
)
Low
(cm
2
)
High
(cm
2
)
Low
(cm
2
)
CP-M+80 82.2 74.0 148 296 222 370 296 444 370 740 444 814 518 888
CP-M+100 102.2 92.0 184 368 276 460 368 552 460 920 552 1012 644 1104
CP-M+120 123.3 111.0 222 444 333 555 444 666 555 1110 666 1221 777 1332
CP-M+150 153.3 138.0 276 552 414 690 552 828 690 1380 828 1518 966 1656
CP-M+180 184.3 166.0 332 664 498 830 664 996 830 1660 996 1826 1162 1992
TABLE 9.2 COMBUSTION VENTILATION REQUIREMENTS – CP-M+80 – CP-M+180