Powrmatic PHS 25, Инструкция по установке и эксплуатации

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Form #44201150
Sept 2010 -35-
Note
1
: first length is parallel section second length is concentric section.
A2 - Fresh air horizontal A2 - Fresh air vertical
B22 - Fresh air and flue horizontal B22 - Fresh air and flue vertical
B22 - Flue horizontal
B22 - Flue vertical
C52 - Fresh air & Flue horizontal in different pressure
zones
C52 - Fresh air vertical & Flue horizontal in different
pressure zones
C12 - Fresh air & Flue horizontal in concetric ducts
C12 - Fresh air & Flue horizontal in concetric ducts
C32 - Fresh air & Flue vertical in concetric ducts
C52 - Fresh air horizontal & Flue vertical in different
pressure zones
Fig. 36
16.1 Type A
2
:
Outside (ducted) combustion air supply. When installed in a dusty or polluted atmosphere, the heater
should be fitted with a ducted supply of clean fresh air. A length of 100mm flexible ducting should be
installed between the Control Box Air Inlet and any rigid ducting and be secured to the Air Inlet with hose
clips.
Where outside combustion air is ducted directly to the burner(s) the low level natural ventilation openings
shall be not less than 50
% of the areas given in 6.4.2.1 above.
16.2 Type B
22
:
When installing external flue single duct systems with ducted combustion air supply the distance between
the flue terminal and fresh air intake shall be no less than 1 m for both vertical and horizontal systems
16.3 TypeC
12
:
The following figure shows the typical arrangements for concentric sidewall flues, see table 12 for 90°
bend equivalent lengths. The bends shown in the illustrations connecting the combustion air intake to the
concentric ducts is calculated into the overall length. For example a system with one additional
150/100mm Ø concentric 90° bend can be installed with 1m 100mm flue single pipe and the
combustion air single pipe as shown with 5.5m of 150/100mm Ø straight concentric flue. (8m – 2.5m
from table 12)