3.6 Air supply
Detailed recommendations for air supply are given in BS 5440: Part 2.
It is not necessary to have an air vent in the room or internal space in which the boiler is
installed.
3.7 Cupboard or compartment ventilation
The boilers are very high efficiency appliances.
As a consequence the heat loss from the appliance casing during operation is very low. For
cupboard or compartment installations it is therefore not necessary to provide any high or low
level permanent air vents for cooling purposes.
3.8 Domestic hot water cylinder
CAUTION:
Single feed indirect cylinders are not suitable. The domestic hot water cylinder must be
of the double feed fully indirect coil type. It must be suitable for working at a gauge
pressure of 0.35 bar above the safety valve setting.
3.8.1 Unvented hot water cylinder
The ecoTEC plus can be connected to an unvented hot water cylinder. Vaillant offer a range of
cylinders called uniSTOR with capacities from 125 litres to 310 litres. All unvented domestic hot
water cylinders must be installed by a competent person approved at the time by the Health and
Safety Executive to the current building regulations and water regulations at the time of
installation.
For building regulations refer to G3 and for water regulations guidance G17 to G24 and
recommendation R17 to R24.
For Ireland: The current issue of BS5546 and BS6700. If fitting to an existing system the local
authority should be informed.
3.9 Condensate drain
A plastic drain pipe must be fitted to allow discharge of condensate to a drain.
Condensate should, if possible, be discharged into the internal household draining system. If
this is not practical, discharge can be made externally into the household drainage system or a
purpose designed soak away, see section 4.3.5 for more details.
3.10 Heating system controls
To Next Page
Loading...
