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eLibrary > BS 5440-1:2000 Installation and maintenance of flues and ventilation for gas appliances of rated heat input not exceeding 70 kW net (1st, 2nd and 3rd family gases) - Specification for installation and maintenance of flues >

BS 5440-1:2000 Installation and maintenance of flues and ventilation for gas appliances of rated heat input not exceeding 70 kW net (1st, 2nd and 3rd family gases) - Specification for installation and maintenance of flues, 2005

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BS 5440-1:2000 Installation and maintenance of flues and ventilation for gas appliances of rated heat input not exceeding 70 kW net (1st, 2nd and 3rd family gases) - Specification for installation and maintenance of flues, 2005

BRITISH STANDARD [Go to Page]
Committees responsible for this British Standard
Contents
1 Scope [Go to Page]
1.1 Equipment
1.2 Competency
2 Normative references
3 Definitions [Go to Page]
appliance compartment
balanced compartment
balanced-flue appliance
bathroom
branched flue system
builder’s opening
chimney
chimney liner
chimney plate
closed flue system
common flue system
condensate drain
condensate-free length
condensate pipe
condensing appliance
connecting flue pipe
decorative fuel effect gas appliance
draught break
draught diverter
equivalent height
effective height - only for gas fires and combined gas fire/back boiler units
fan-diluted flue system
fanned draught flue system
fireplace recess
flat roof
flue
flue break
flue lining
flue pipes
flue system
individual flue system
Installation instructions [Go to Page]
appliance manufacturer’s instructions
flue and chimney manufacturer’s instructions
leisure accommodation vehicle
main flue
natural draught flue system
open flue system
open-flued appliance
pluming
room-sealed appliance
residential park home
secondary flue
secondary flue height
secondary flue length
Se-duct
shared flue or duct system
shower room
subsidiary flue
terminal
terminal guard
termination
U-duct
4 Preliminary design considerations [Go to Page]
4.1 Types of flue system [Go to Page]
Classification of gas appliances according to flue types - from CEN CR 1749 (Common types in the UK are shown with an asterisk *) (> denotes fan downstream of draught divertor) [Go to Page]
Typical appliances Types A and B, classification to CR 1749
Typical appliance Types C
Typical appliance Types C3 and C7 classification to PD 6579 (CR 1749)
4.2 Flue termination [Go to Page]
Open flue terminal locations for pitched roofs
Open flue terminal locations on flat roofs
Open flue terminal locations on flat roofs (continued)
Open flue terminal locations near adjacent structures or buildings
Open flue terminal locations near structure, windows and openings on pitched roofs
4.3 Terminal guards
4.4 Fire precautions
4.5 Installations in bedrooms
4.6 Installations in bathrooms or shower rooms
4.7 Instantaneous water heaters
4.8 #Cupboards and compartments in bathrooms, shower rooms or bedrooms
4.9 Garages and other hazardous areas
4.10 Radon gas protection
4.11 Passive stack ventilation
4.12 Exchange of information and planning
5 Individual open flue: natural draught (for Types B11, B12, B13 appliances) [Go to Page]
5.1 Design [Go to Page]
Typical methods of using a flue liner in a masonry chimney installation serving a gas appliance, other than a back boiler
Installation of a gas fire and combined back boiler using a back boiler enclosure and prefabricated chimney/flue system
Installation of a gas fire and combined back boiler using a back boiler enclosure and prefabricated chimney/flue system (continued)
Location of roof mounted terminals for individual natural draught open flue systems (minimum height of base of terminal) [Go to Page]
Condensate-free lengths of individual open flue used with a gas fire [Go to Page]
Maximum lengths for condensate-free flues for appliances other than gas fires
Appliance/chimney combinations which require the chimney to be lined
Minimum void dimensions required below appliance connections
5.2 Installation [Go to Page]
Boiler connections to existing brick chimney
5.3 Commissioning
5.4 Maintenance
6 Individual open flue: fanned draught (for Types B [Go to Page]
6.1 Design
6.2 Installation
6.3 Commissioning [Go to Page]
Minimum flow rates for fanned flues
6.4 Maintenance
7 Shared open flue: natural draught (for Types B [Go to Page]
7.1 Design [Go to Page]
Appliances discharging by way of subsidiary flues into a main flue [Go to Page]
Shared flue systems and flue block types
7.2 Installation
7.3 Maintenance
8 Balanced flue: natural draught (for Type C [Go to Page]
8.1 General
8.2 Installation [Go to Page]
Shielding of plastics gutters
8.3 Installation checks
8.4 Maintenance
9 Room sealed: fanned draught [Go to Page]
9.1 Design options
9.2 Installation
9.3 Installation checks
9.4 Maintenance
10 Balanced compartment [Go to Page]
10.1 General
10.2 Design [Go to Page]
Balanced compartment air inlet duct sizing
10.3 Appliance compartment construction
10.4 Temperature effects
10.5 Termination
10.6 Commissioning
10.7 Maintenance
11 Shared room-sealed: (for Types C [Go to Page]
11.1 Design [Go to Page]
Normal Se-duct block sizes [Go to Page]
Balanced compartment installations
11.2 Sizing
11.3 Termination design and location
11.4 Inspection
11.5 Appliance selection and installation [Go to Page]
Se-duct sizes for continuously burning appliances (e.g. boilers, gas fires) in flats [Go to Page]
Shared room-sealed systems
Se-duct sizes for combinations of instantaneous water heaters (30 kW input rating) and continuously burning appliances (e.g., boilers, gas fires) in flats
11.6 Commissioning
11.7 Maintenance
12 Special categories of flue system [Go to Page]
12.1 Flue systems for use with condensing appliances
12.2 Open flue systems without a draught diverter (for Type B2 appliances)
12.3 Type C7 (“Vertex”) flues
12.4 Other open flue fanned draught systems
12.5 #Categories of flue system not covered by 12.1 to 12.4$
(informative) Calculation method for flue sizing [Go to Page]
(informative) Calculation method for flue sizing
This annex provides a procedure for estimating whether a given flue design is likely to ensure full clearance of combustion products. [Go to Page]
Resistance factors for use in calculating equivalent heights (Use specific factors from flue or chimney manufacturer’s instructions where possible)
Table A.1 gives resistance factors for common flue system components for use in formula. Table A.2 contains the appropriate inlet and outlet flue resistances. [Go to Page]
Inlet and outlet resistances
Minimum equivalent heights needed [Go to Page]
Worked example 1
Worked example 2
(informative) Designation system used in European Chimney Standards [Go to Page]
(informative) Designation system used in European Chimney Standards [Go to Page]
Defining characteristics
Common applications of metal chimneys for gas appliances and their equivalent designations
(normative) Flue terminal positions [Go to Page]
(normative) Flue terminal positions [Go to Page]
Minimum dimensions of flue terminal positions (all types) [Go to Page]
Flue terminal positions
Example of how terminal position is measured
Example of how terminal position is measured (continued)
(informative) Guidance on the design and installation of flue block systems [Go to Page]
(informative) Guidance on the design and installation of flue block systems
General [Go to Page]
When designing and installing a gas flue block system it is essential to ensure that:
Design considerations [Go to Page]
Gas flue blocks
Typical flue block systems (general arrangement)
Bonded gas flue block system for timber frame construction [Go to Page]
Typical construction details for gas flue block systems in internal walls
Typical construction details for gas flue block systems in external walls
Temperature effects
Termination
Installation of the gas flue blocks
Jointing material
Gas flue block installations projecting into cavity wall construction
Flue pipe system installation in roof space connecting to the termination
Checking the gas flue blocks during and after installation
(informative) Checking of case seals and the general integrity of room-sealed fan assisted positive pressure gas appliances [Go to Page]
(informative) Checking of case seals and the general integrity of room-sealed fan assisted positive pressure gas appliances [Go to Page]
Checklist for checking of case seals and the general integrity of room-sealed fan assisted positive pressure gas appliances$ [Go to Page]

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BS 5440-1:2000 Installation and maintenance of flues and ventilation for gas appliances of rated heat input not exceeding 70 kW net (1st, 2nd and 3rd family gases) - Specification for installation and maintenance of flues, 2005

⨯To continue with accurate pricing,
please select your company type below: