Draught Regulator; Mounting Of The Cleaning Tool; Filling The Heating System With Water - Viadrus U22 Economy Series Manual For Operation And Installation

5.2.3

Draught regulator

The procedure of setting of the boiler draught regulator is specified in the manual which is attached in the corresponding regulator
Fig. №. 21
5.2.4

Mounting of the cleaning tool

Use usual mounting tools and leather gloves for the mounting or demounting of the brush.
5.2.5

Filling the heating system with water

Water hardness has to comply with ČSN 07 7401 and it is necessary to ensure its preparation according to Chapter No. 4.1 in the case
that water hardness does not meet requirements.
Heating systems with an open expansion tank enable direct contact of heating water with the atmosphere. Within the heating period,
expanding water in the tank absorbs oxygen that increases corrosion effects and at the same time water is being significantly
evaporated. Only water prepared to the valued according to ČSN 07 7401 may be used for addition.
It is necessary to thoroughly rinse out the heating system to ensure washing-up of all impurities.
During the heating season, it is necessary to maintain a constant water volume in the heating system. While refilling water into the heating
system, it is necessary to avoid air suction into the system. Water from the boiler and the heating system mustn't be discharged or withdrawn for
using, except the necessarily needed cases, such as repairs and so on. Emptying heating water and filling-up of new water increases a danger
of corrosion and creation of water stone. If it is necessary to add water into the heating system, please only add it to the cooled boiler, in
order to prevent bursting the section.
After having filled the boiler and heating system, it is necessary to check tightness of all connections.
In case of using the DBV 1 - 02 two-way safety valve, cooling water is filled gradually into return water.
The finish of mounting and performance of the heating test have to be recorded in "Warranty certificate". (It is placed in Chapter No.
17)
1.
2.
3.
4.
16
Draught regulator
Draught regulator lever
Chain
Suspension split plug