Technical data

38
STRATA2
(Prog #) Description of Prog # Range Preferred setting
51 Minimum output % reached prior to 5..100 40
cascade switching modules Off
52 Maximum output % reached prior to 5..100 80
cascade switching modules On
56 Time spent by module on ignition rate prior 0..1200 0
to modulation. (delay time between modules)
60 Minimum temperature difference between
flow and return temperature 0..20 2
Configuration of Plant OEM
90 Display default 0..1 0
0 Day # Time of day
1 System flow temperature
91 Software version 00.0…99.9 – –
92 RVA 47 controller operation hours 0.500,000 – –
Table 12
7.3 OEM parameter setting (contd)
8.0 maintenance
and inspection
The frequency of servicing will depend upon particular conditions and usage, however for general
guidance, maintenance/inspections should take place at least every 12 months. Prior to carrying out any
required maintenance, the unit must be inspected.
8.1 inspection
Complete the following steps before commencing inspection:
● Ask the user for any problems with the Central Heating unit or any other comments regarding the
appliance.
● Check the water pressure and treatment level of the installation.
● Remove the casing of the unit and inspect all pipes and connections for water leaks.
● Open the syphon rinsing pipe at the back of the boiler.
● Run the unit at maximum capacity and measure the load or the CO
2
.
● Run the unit at minimum capacity and measure the load or the CO
2
.
● Listen to the sound of the module pump.
● Disassemble the burner by removing the six M6 bolts, removing the ignition cable and disassembling
the two combustion fan cables.
● Inspect the combustion fan blades.
● Check the spark between the electrode and the burner – this should be between 5 and 6mm.
● Check the interior of the heat exchanger for any contamination.