Radiant RK 100, Инструкция по эксплуатации, Страница: 25 / 72

INSTALLATION INSTRUCTIONS
RK 100 - RAD - ING - MAN.INST - 1311.1 - DIGITECH CS MIAH4
21
3.6.3 Central heating circuit
In order to prevent scaling or deposits in the primary heat exchanger, the mains supply water to the heating circuit must be
treated according to the requirements of local standards.
This treatment is indispensable in the case where the circuit is frequently topped-up or when the system is often either partially
or fully drained.
The outlet connection of the boiler safety valve must be connected to a discharge trap. The manufacturer will not be
held responsible for flooding caused by the operation of the safety valve in the case of system overpressure.
3.6.4 Condensate Drain
Properly connect the siphon condensate collecting the boiler to an exhaust system having adequate
slope. Where possible, you should make this link using glass collection in order to check for proper
condensate drainage avoiding stagnation that could cause hazardous lift the condensate to the boiler.
Check before connecting the condensate trap to the drain pipe, which is ensured by the gradient of
boilers as described in paragraphs 3.5.2 and 3.5.3.
The condensate water inflow into the public drainage system, must be in compliance with the municipal standards
referring to the sanitary regulations’ wastewaters.
The condensate drain system is already pre-installed and connected to each boiler.
The condensate drain flexible pipe supplied with the boiler (conforming to UNI EN 677 standard) must be
connected to a proper condensate trap. The condensate discharge into the drainage system is allowed providing a
condensate trap (siphon) is installed.
It will be care of the planner, in consideration of the system power and the building’s use destination, to value the
adoption of acid condensate neutralization systems.
Any condensate discharge pipe work external to the building (or in an unheated part of it) must be insulated to
protect against frost. Before switching the boiler On, check the correct condensate discharge.
3.6.5 Condensate neutralization
The condensate neutralization system neutralizes the condensate present in boilers and Inox, plastic, glass or
ceramic flue exhaust systems.
Acid condensate, introduced into the neutralization box, follows a two-steps set course. First phase: nitrates and
sulphates filtration through active carbons contained in the first part of the carbon site pipe. Second phase: pH
rising. The acidity of the condensate can be controlled through the use of appropriate tools for the determination of
Ph, such as the litmus paper. Neutralized condensate can be consequently carried to the drainage system.

Installation instruction
a.
Assembly of threaded joint to discharge into the drainage system:
make a hole D.26-27 mm on long or short
side of the box, to a height of 20 mm from the border, (see fig. 1 – page 22): According to the type of the
installation, the hole can be made on longitudinal or transversal side. Put the joint assembled with the washer,
from the outside and fix it from the inside with the 3/4” nut.
b.
Condensate connection:
condensate to be neutralized must be carried to the condensate collector hole (26
mm) on the cover; the rubber holder joint must be connected to the wastewater evacuation system in a
disjointed way through the installation of a condensate trap;
c.
Box loading:
place the bag containing activate carbons in the carbon site pipe corresponding to the condensate
collector hole. Pour the content of the granulate bag outside the carbon site pipe.

Maintenance
pH parameters must be included between <5,5 – 9,5>
Six-monthly.
pH determination:
Immerse a litmus paper (or an appropriate digital tool) to the condensate near the threaded joint for about 2
seconds and put it onto a white sheet. After about 30 seconds the comparison with the coloured scale will be
possible.
Neutral point is on the 6,8-7 value; in case of lower value the condensate is acid, in case of a higher value it is
basic.
No-trated condensate pH can be determinated by immersing the litmus paper inside the carbon site pipe.