Technical data

1514
The Greenstar Si series have the choice of 2 differently sized
vertical RSF flue systems, 100mm and 125mm. Both systems
have different maximum lengths. Options 1 to 3 detail the
permissible lengths.
Vertical RSF Flue
Vertical balanced flue kit
Comprises:
1 x Flue Terminal Assembly
1 x Weather Sealing Collar Part No. 7 719 002 430
(100mm dia)
1 x Fire Stop Spacer Part No. 7 719 002 431 (125mm dia)
1 x Vertical Adaptor
Accessories
Flue Diameter 100mm 125mm
Flue Terminal
Assembly Diameter
135mm 135mm
Maximum Flue Length
(inc terminal)
6,400mm 15,000mm
All models
Flue Terminal
Assembly Length
1,140mm 1,365mm
Worcester Bosch Part No.
100mm 125mm
Extension Flue Kit
1,000mm long
7 719 002 349 7 719 001 892
90º Elbow 7 719 002 348 7 719 001 891
45º Elbow 7 719 002 347 7 719 001 899
Note: The roof flashing is not supplied by Worcester Bosch.
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Greenstar Si combi boiler
series vertical fluing options
Option 1
VERTICAL BALANCED FLUE SYSTEM MAXIMUM HEIGHT
Flue Components Required
25 & 30Si Models
Maximum total straight flue length
(Exc. Terminal)
100mm 125mm
25 & 30Si 6,400mm 15,000mm
Flue Diameter Description Quantity Worcester Bosch Part No.
100mm Vertical Flue Kit 1 7 719 002 430
100mm Flue Extension up to 6 7 719 002 349
125mm Vertical Flue Kit 1 7 719 002 431
125mm Vertical Adaptor up to 15 7 719 001 892
MINIMUM HEIGHT
Flue Components Required
25 & 30Si Models
300mm
500mm
Flat roof
L = 100mmØ 1140mm
L = 125mmØ 1365mm
Pitched
roof
Flue Diameter Description Quantity Worcester Bosch Part No.
100mm Standard Flue Kit 1 7 719 002 430
125mm Standard Flue Kit 1 7 719 002 431
Straight flue
Length
300mm
500mm
Pitched
roof
Flat roof
L = 100mmØ 1140mm
L = 125mmØ 1365mm
100mmØ x 5
125mmØ x 14
Option 4
EXTENSION FLUE HORIZONTAL USING A SECOND
90˚ BEND
Flue Components Required
25 & 30Si Models
Maximum total straight flue length
100mm 125mm
25 & 30Si 2,600mm 11,000mm
Flue Diameter Description Quantity Worcester Bosch Part No.
100mm Standard Flue Kit 1 7 719 002 345/497
100mm Extension Flue Kit up to 2 7 719 002 349
100mm 90˚ Elbow 1 7 719 002 438
125mm Standard Flue Kit 1 7 719 002 350
125mm Extension Flue Kit up to 11 7 719 001 892
125mm 90˚ Elbow 1 7 719 001 891
Option 6
EXTENSION FLUE UPWARDS AND HORIZONTAL USING
A THIRD 90˚ BEND
Flue Components Required
25 & 30Si Models
Maximum total straight flue length
100mm 125mm
25 & 30Si N/A 9,000mm
Flue Diameter Description Quantity Worcester Bosch Part No.
125mm Standard Flue Kit 1 7 719 002 350
125mm Extension Flue Kit up to 9 7 719 001 892
125mm 90˚ Elbow 3 7 719 001 891
125mm Vertical Adaptor 1 7 719 002 433
Option 5
EXTENSION FLUE UPWARDS AND HORIZONTAL USING
A SECOND 90˚ BEND
Flue Components Required
25 & 30Si Models
Maximum total straight flue length
100mm 125mm
25 & 30Si 2,600mm 11,000mm
Flue Diameter Description Quantity Worcester Bosch Part No.
100mm Standard Flue Kit 1 7 719 002 345/497
100mm Extension Flue Kit up to 2 7 719 002 349
100mm 90º Elbow 2 7 719 002 348
100mm Vertical Adaptor 1 7 719 002 432
125mm Standard Flue Kit 1 7 719 002 350
125mm Extension Flue Kit up to 11 7 719 001 892
125mm 90º Elbow 2 7 719 001 891
125mm Vertical Adaptor 1 7 719 002 433
Option 3
EXTENSION FLUE HORIZONTAL AND UPWARDS
Flue Components Required
25 & 30Si Models
Maximum total straight flue length
100mm 125mm
25 & 30Si 4,600mm 13,000mm
Flue Diameter Description Quantity Worcester Bosch Part No.
100mm Standard Flue Kit 1 7 719 002 345/497
100mm Extension Flue Kit up to 4 7 719 002 349
100mm 90º Elbow 1 7 719 002 348
100mm Vertical Adaptor 1 7 719 002 432
125mm Standard Flue Kit 1 7 719 002 350
125mm Extension Flue Kit up to 13 7 719 001 892
125mm 90º Elbow 1 7 719 001 891
125mm Vertical Adaptor 1 7 719 002 433