Fondital TAHITI CONDENSING KC24, Инструкция по установке, эксплуатации и обслуживанию

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Above shown curves, relative to a 20°C desired room temperature, are always limited between minimum and maximum value of Ch ope-
ration temperature range. When 20°C fictitious room temperature is changed (via adjuster 11), all curves move correspondingly.
3.2.15. Phone operation device installation (optional equipment)
The boiler can be connected to a phone operation device (not provided with the boiler), allowing for CH mode activation via phone.
The phone operation device is to be connected to no. 3 and no. 4 positions on the remote control (pic. 17).
Phone operation device specifications are enclosed in the manual enclosed in its packaging.
3.3. Loading the system
Once all boiler connections have been completed, CH system can be filled.
This procedure is to be cautiously carried out, following each below indicated step:
- open the air purging valves on all radiators and verify the boiler automatic valve operation;
- gradually open the relevant loading tap to fill the system up (pic. 2), checking that all automatic air purging valves installed in the sy-
stem properly work;
- close all radiator air purging valves as soon as water starts coming out;
- check boiler water pressure gauge for pressure to reach 1-1.3 bars reading;
- shut the boiler loading tap and bleed any air out again by opening all air purging valves on radiators;
- start the boiler, and as soon as the system reaches working temperature, stop the pump and repeat the air purging procedures;
- allow the system to cool and restore water pressure to 1-1.3 bars.
WARNING
As far as domestic heating systems treatment of water is concerned, in order to optimize performance and safety, to
preserve these conditions over time, to ensure long-lasting regular operation of auxiliary equipment as well, and to minimize
energy consumption, thereby integrating current local laws and standards it is advisable to use specific products that are suita-
ble for multi-metal plants.
WARNING
Safety low water pressure switch will not allow the burner to be started when water flow is below 200 liter/minute.
CH system water pressure is not to be below 1 bar; restore proper value as needed via the provided loading tap (pic. 2).
The procedure is to be carried out while water in the system is cold. Boiler pressure gauge displays water pressure in the CH
system.
WARNING
After long boiler inactivity, its pump may be blocked. Before operating the boiler, follow the below indicated pump unblocking
procedure:
- unscrew the protective bolt, located in the center front section of pump motor;
- put a screwdriver into the opening and manually rotate the circulation unit shaft clockwise;
- once the unblocking operation is completed, screw back on the protection bolt and check for water leaks;
When the pump protective bolt is removed, some water may flow out. Before re-installing the boiler external housing, verify all
internal surfaces to be dry.