| Terminal Position with Minimum Distance (Fig. 18) | (mm) |
A1 | Directly below an opening, air brick, opening |
|
B1 | windows, etc. | 300 |
Above an opening, air brick, opening window etc. | 300 | |
C1 | Horizontally to an opening, air brick, opening window etc. | 300 |
D2 | Below gutters, soil pipes or drain pipes. | 25 (75) |
E2 | Below eaves. | 25 (200) |
F2 | Below balconies or car port roof. | 25 (200) |
G2 | From a vertical drain pipe or soil pipe. | 25 (150) |
H2 | From an internal or external corner. | 25 (300) |
I | Above ground, roof or balcony level. | 300 |
J | From a surface or boundary line facing a terminal. | 600 |
K | From a terminal facing a terminal (Horizontal flue). | 1200 |
| From a terminal facing a terminal (Vertical flue). | 600 |
L | From an opening in carport (e.g. door, window) |
|
| into the dwelling. | 1200 |
M | Vertically from a terminal on the same wall. | 1500 |
N | Horizontally from a terminal on the same wall. | 300 |
R | From adjacent wall to flue (vertical only). | 300 |
S | From an adjacent opening window (vertical only). | 1000 |
T | Adjacent to windows or openings on pitched and flat roofs | 600 |
U | Below windows or openings on pitched roofs | 2000 |
1In addition, the terminal should be no nearer than 150 mm to an opening in the building fabric formed for the purpose of accommodating a
2Only ONE 25mm clearance is allowed per installation. If one of the dimensions D, E, F, G or H is 25mm then the remainder MUST be as shown in brackets, in accordance with
NOTE: The distance from a fanned draught appliance terminal installed parallel to a boundary may not be less than 300mm in accordance with the diagram below
| 300 min | ||
Terminal |
| * | |
Assembly |
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Plume
Displacement Kit
Top View Rear Flue
Fig. 17
Property Boundary Line
J,K | T | Air Inlet |
| ||
|
|
U
7.0Site Requirements
7.8Flue
NOTE: Due to the nature of the boiler a plume of water vapour will be discharged from the flue. This should be taken into account when siting the flue terminal.
1.The following guidelines indicate the general requirements for siting balanced flue terminals. For GB recommendations are given in BS 5440 Pt 1. For IE recommendations are given in the current edition of I.S. 813 “Domestic Gas Installations”.
2.If the terminal discharges onto a pathway or passageway, check that combustion products will not cause a nuisance and that the terminal will not obstruct the passageway.
3.If a terminal is less than 2 metres above a balcony, above ground or above a flat roof to which people have access, then a suitable terminal guard must be provided.
4.* This dimension may be reduced to 25mm by the use of Flue Deflector Kit part no. 5111068.
IMPORTANT:
•Under car ports we recommend the use of the plume displacement kit.
•The terminal position must ensure the safe and nuisance - free dispersal of combustion products.
IMPORTANT: If fitting a Plume Displacement Flue Kit, the air inlet must be a minimum of 150mm from any opening windows or doors (see Section 9.0).
Opening Window or Door
150mm | Fig. 18a |
MIN. |
|
R 
N
M
I 
I
F
B
L
A
G 
I
Likely flue positions requiring a flue terminal guard
D |
| A |
C E |
|
|
I | S | I |
|
| |
| F | J,K |
| A |
|
H
H 
Fig. 18
20© Baxi Heating UK Ltd 2012
