Viadrus GARD G42 ECO, Руководство по эксплуатации и установке

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6. Perform setting and adjustment of the thermal power of the boiler according to chapter 11.3. To perform a heating test, please switch-
over the regulator to the "sweeper" operation mode. The boiler is being operated in this mode on the nominal power, independent on the
regulator settings.
7. Carry out a heating test.
In case the boiler is equipped with a forced flue-gases exhaustion, perform also the following steps:
1. Set the boiler thermostat to temperature
of 85 °C.
2. Heat heating water to temperature of 75
– 85 °C.
3. Check whether there is underpressure in the draught diverter.
4. Check correctness of the function of the flue gas ducting - tightness of joints.
5. For testing purpose, fill up fully the flue gas ducting output (the burner has to be excluded from operation and the ventilator has to be
stopped not later than 60 sec. from it)
6. Release the flue gas ducting (the burner should be ignited again).
7. Disconnect the ventilator electrically and interconnect the clamps 9 and 10 (the flue gases reverse flow safety device has to switch-off the
burner of the boiler for emergency reason till 60 sec.).
Attention: flue gases escape into the boiler room during this test.
8. Re-change the connection to the original state, switch-off the burner with help of the operation thermostat (the ventilator has to be
stopped as well).
11.3 Setting and adjustment of boiler thermal power
11.3.1
Power adjustment procedure for G42 ECO XZX2XTX boiler (2° gas valve)
1. Put the boiler into operation.
2. Measure the gas input pressure.
3. Before itself wait a while till operational pressure conditions on the burner are being stabled .
4. If an outdoor thermostat is installed, then - during power adjustment - it must be in an off-state .
5. Demount the plastic protective cover of the High-Low coil.
Fig. №. 27
Demounting of the protective cover of High-Low coil
6. Switch-on and switch-off several times the High-Low regulator with help of the low power switch situated on the electric panel.
7. Connect the manometer (the U-shaped pipe) to the measuring point of the output gas overpressure on the compact electromagnetic
valve.
8. Switch-over the switch I / II on the control panel to the maximum power (symbol II).
9. Using a nut key No. 8 (for the SIT SIGMA 843 valve - the key No. 10), rotate the external adjusting screw to set the nominal power. By
turning clockwise, the gas overpressure is being increased, otherwise - decreased .
10. Switch-over the switch I / II on the electric panel to the low power (symbol I).
11. Using a screw driver of 3.5 mm, adjust the low power by turning the inner screw of the regulator. By turning clockwise, the gas
overpressure is being increased, otherwise - decreased .
12. After finishing the adjustment, verify correctness of the set values after twice switching-on and switching-off the switch I / II.
13. If the set values of gas input do not correspond to the required ones, repeat the whole process.
Fig. №. 28
High
–
Low coil
adjusting screw for nominal power setting
adjusting screw for low power setting
cap
clamps 6.3 mmAMP
protective clamp 6.3 mmAMP
M5 connection of pressure feedback