Hoval RoofVent KG, Original Operating Manual

Page: 36 / 40

9.2 Maintenance
Maintenance schedule
Activity Procedure Interval
Clean unit ■ Clean inside of RoofVent ® unit with vacuum cleaner.
■ Clean the heat exchanger and burner of the gas condensing boiler.
■ Remove the siphon, clean it and rinse the condensate drain.
1 × annually
Functional check
■
Check function of the fan and actuators.
■
Check function of the Air-Injector.
■
Check the connections of the gas condensing boiler for leaks.
■
Check ignition electrode and readjust or replace if necessary.
■
Check function of the control system.
1
×
annually
Flue gas path test ■ Check flue gas pipe and, if required, clean inside. 1 × annually
Emission measurement ■ Check setting of the gas control valve and readjust where necessary. 1 × annually
Neutraliser ■ Loosen contaminated granulate and clean neutralisation unit with water.
Replace heavily soiled granulate.
1 × annually
Check of the heat transfer fluid ■ Check the system pressure and top up with heat transfer fluid if necessary.
■ Take sample and test:
– Test pH value with indicator strips
– Test frost protection with a refractometer
1 × annually
Filter change
■
Renew air filter.
Filter Mat. No. Quantity
Fresh air
2076260
2076262
2
1
Extract air
2078502
2076263
1
1
When the filter alarm is
displayed, at least 1
×
annually
Test of the inhibitor protection ■ Take a sample of the heat transfer fluid and have the inhibitor protection
analysed by a suitable service provider.
Every 3 years
Table 18: Maintenance schedule
36
RoofVent ® KG
Operating instructions
Maintenance and repair
4 220 755-en-00