Lochinvar CP-M Series User Manual

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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

Lochinvar CP-M Series Specifications

General

Brand	Lochinvar
Model	CP-M Series
Category	Boiler
Language	English