SECTION 3 POTTERTON COMMERCIAL PRODUCTS DIVISION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
PAGE 10
PARAMOUNT
Fig 4. Paramount Flue Options
Paramount 40 Paramount 60 Paramount 80
Flue Type Flue
Size
Max
Flue
Length*
Max. No of
Bends
(90°)
Flue
Size
Max
Flue
Length*
Max. No
of Bends
(90°)
Flue
Size
Max
Flue
Length*
Max. No
of Bends
(90°)
C13 (Balanced Flue) 80/125 10(5) 2 110/150 5(5) 2 110/150 5(5) 2
80/125 13 0 110/180 22 0 110/180 13 0 C33(1) (Concentric Vertical)
110/160²
20 0
C33(2) (Concentric Vertical) 80/125 15(3) 2 110/180 24(3) 2 110/180 15(3) 2
C33(3) (Concentric Vertical) 80/125 10(3) 2 110/180 13(2) 2 110/180 9(3) 2
B23 (Conventional Flue) 80 20(3) 3 110 25(3) 3 110 16(3) 3
* This is the maximum flue length, the allowable horizontal run within total flue length is shown in brackets.
For lengths longer than specified in the table please contact the Technical Department for suitability
Note: Flue sizes shown for the Concentric Vertical Flue are adapted sizes for flues supplied by Potterton Commercial. For flues supplied by
other manufacturers, please refer to technical data for standard spigot sizes.
² not supplied by Potterton
C13 the maximum flue length shown may give an output reduction of 5% with the maximum flue shown.
Note: BS 5440 states a suitable guard should be provided whenever the appliance terminal is fitted less than 2 m above ground, above a
balcony or flat roof
Additional Bends -
Reduction of total length of flue pipe by:
- per 87° elbow = 1.00 m
- per 45° elbow = 0.50 m
- per 30° elbow = 0.35 m
- per 25° elbow = 0.20 m
Existing Chimneys: If a chimney, which was
previously used for oil or solid fuel furnaces, is used
for installing a concentric flue gas pipe, it is
necessary for the chimney to be thoroughly cleaned.
Installation: The flue gas pipe must be installed with a
slope from the PARAMOUNT so that condensate
from the flue gas pipe can drain into the central
condensate sump in the PARAMOUNT.
The minimum slope is as follows:
- Horizontal flue pipe: min. 3°
Height above Roof: Refer to relevant British
Standards and Code of Practice.