Installation
26
MAXXflo EVO
4.7 FLuE SySTEMS AND VENTILATION
4.7.1. GENERAL REQuIREMENTS
CAuTION
The installer is responsible for ensuring that the right type of flue system is used and that the
diameter and length are correct. For optimal installation, the accessories supplied by Andrews
Water Heaters should ensure that the correct system components are used.
The coupling and connection methods may vary depending on the manufacturer of the flue sys
-
tem. It is not permitted to combine pipes, coupling and connection methods from different manu
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facturers. This also applies to roof feed-throughs and common channels.
If connecting this heater to an older existing flue system, care must be taken to ensure that this
system is of the correct size and specification. If the flue system is aluminium, a condensate trap
must be fitted in the flue before it connects to the heater.
T
his water heater may not be used in areas where chemical substances are stored or used.
Some propellants, bleaching and cleaning agents disperse explosive vapours and / or cause ac
-
celerated corrosion.Be aware that this water heater may be vulnerable to accelerated corrosion
from salty air e.g. coastal installations
• Refer to the following standards and guidance notes before installing the flue system :
BS6644 : Specification for the installation of gas-fired hot water boilers of rated inputs between
70kW (net) and 1.8MW (net)
IGEM UP 10 : Installation of flued gas appliances in industrial and commercial premises
4.7.2 SuITAbLE FLuE MATERIAL
When using a flue system that has not been supplied by Andrews Water Heaters, make sure that they are
certified for the type and use. Check the text string printed on the flue system to ensure the correct materials
are selected. See the example below for guidance:
1.
This material is CE approved to this standard. EN 14471 for plastic flue and EN 1856-1 for metal flue
2.
Temperature rating: Class cannot be lower than T120, but can be higher
3.
Pressure rating: P & H ratings are allowed, N rating is not allowed
4.
Condensate resistance: Must be W (wet) rated. D (dry) rating is not allowed
5.
Corrosion resistance: Must be V1 (gas combustion products) rated. V2 & V3 are not allowed
6.
Material: Must be L11 minimum (Aluminium) but can be higher
7.
Fire resistance class: Classed A through to E are allowed. Class F is not allowed
Example text
EN 14471 - T120 P1 W 1 O50 LI E U0
EN 1856-1 - T200 P1 W V1 L11 045 O 75
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Содержание MAXXflo EVO CWH 90/302
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