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

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8.5.2 WORKED EXAMPLE – TWIN-PIPE FLUE
CP-M+150 boiler with an inlet air duct of 8 metres, 3 x 90° elbows plus a vertical inlet cap and an exhaust duct of 12 metres plus
4 x 90° elbows.
Item Quantity Resistance Total
Straight tube (m) 8 1.2 9.6
90° Elbow 3 1.2 3.6
Vertical inlet cap 1 9.1 9.1
Straight tube (m) 12 3.8 45.6
90° Elbow 4 3.8 15.2
Total Resistance (Pa) 83.1
TABLE 8.9 WORKED EXAMPLE – TWIN-PIPE FLUE
The combined resistance of the air inlet duct and exhaust duct give the flue system an overall resistance of 83.1 Pa. As this is
below the 200 Pa maximum limit, this is acceptable.
8.6 FLUE DISCHARGE
The flue system must ensure safe and efficient operation of the equipment to which it is attached, protect the combustion process
from wind effects and disperse the products of combustion to open external air.
The flue must terminate in a freely exposed position and be so situated as to prevent the products of combustion entering any
opening in a building.
For further information on terminal locations, please refer to
Figure 8.1 .
8.7 FLUE TERMINAL INSTALLATION
8.7.1 TYPE B
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(CONVENTIONAL FLUE)
To convert the CP-M+60 – CP-M+120 to conventional flued operation, the approved air intake grille should be fitted to the
concentric flue spigot. The grille will have an opening in the top plate that allows the connection of the flue system to the exhaust
port of the boiler.
FIGURE 8.2 FITTING AIR INLET GRILLE TO CP-M+60 – CP-M+120
The CP-M+150 & CP-M+180 require an air inlet grille to be fitted to the air inlet spigot of the boiler casing.
Models Part Number
CP-M+60, CP-M+80 M87927
CP-M+100, CP-M+120 M87957
CP-M+150, CP-M+180 M81660
TABLE 8.10 AIR INTAKE GRILLE PART NUMBERS