Checks; Checking The Smoke Duct; Checking The Expansion Vessel Pressure; Reading The Pressure At The Nozzles With The Chimney Sweep Function - Sime UNIQA REVOLUTION 25 Installations-, Gebrauchs- Und Wartungsanleitung

EN
8.4

Checks

8.4.1

Checking the smoke duct

It is recommended that the user checks that the combustion air
inlet duct and smoke outlet duct are integral and airtight.
8.4.2

Checking the expansion vessel pressure

It is recommended that the expansion vessel on the water side
is drained and that the prefilling pressure is not less than 1 bar .
If this is not the case, pressurize it to the correct value (see sec-
tion "Expansion vessel".
Once the checks described above have been completed:
– refill the boiler as described in section "REFILL operations"
– start the boiler up and carry out a smoke analysis and/or
measure the combustion efficiency.
– refit the front panel securing it with the two screws which
were removed previously
8.5 Reading the pressure at the nozzles with
the chimney sweep function
Should the pressure at the nozzle need to be checked, a qual-
ified maintenance technician can activate the chimney sweep
function described below.
This function lasts 15 minutes and is activated by proceeding
as follows:
– if the panel (2) has not already been removed, remove the
two screws (1), pull the front panel (2) forwards and release it
from the top by lifting it
2
– remove the screws (3) securing the control panel (4)
– move the panel (4) upwards (a) but keeping it in the side
guides (5) to the end of travel
– bring it forwards and down (b) until it is horizontal
4
b
3
1
Fig. 59
5
a
Fig. 60
– close the gas valve
– loosen the "nozzle pressure" point (6) and the screw of the
"supply pressure" point (7) and connect each one to a pres-
sure gauge
6
7
m
CAUTION
There must be no heat requests in progress (hot water
valves closed or TA open/not activated).
– open the gas valve
– power the boiler by setting the main switch to "ON"
ON
– press button y and hold for at least 1 second, until you se-
lect "SUMMER" mode l , where it is not already selected
– press and hold down the buttons
for approximately 10 seconds until the message "Hi" appears
on the display together with the flashing symbols
Fig. 61
Fig. 62
< and > at the same time
l and n
45