Technical data

32
STRATA2
6.6 setting domestic hot water
The RVA 47 cascade manager can be set to control the temperature of the DHW either by means of
a dedicated sensor or thermostat.
6.7 switching off the appliance
It is recommended to leave the appliance running throughout the year in order to prevent the unit from
freezing, or moving parts from becoming blocked by corrosion. In order to avoid this, set the RVA 47
controller to the ‘standby’ position.
In this mode, the central heating unit will run the attached pumps for 1 minute in every 24 hours, while
the frost protection may remain operative.
Table 10
(Prog#) Description of Prog # Range Inputs Preset
Time of Day
1 Time of day 0-23:59 Hr/Min 00:00
2 Weekday 1…7Day 1
Time Switch Program Heating
5 Every day the same 1-7 Day –
Every day different 1…7Day
6 1st On time -24:00 Hr/Min 06:00
7 1st On time -24:00 Hr/Min 22:00
8 2nd On time -24:00 Hr/Min –
9 2nd On time -24:00 Hr/Min –
10 3rd On time -24:00 Hr/Min –
11 3rd On time -24:00 Hr/Min –
Hot Water Service
13 Required DHW temperature 40-60 ºC55
Heating Circuit
14 Night set back temperature 10-30 ºC16
15 Frost protection temperature 4-15 ºC10
16 Summer/winter switching 8-30 ºC17
17 Slope of heating curve -/2.5.40 ºC32
7.0 boiler
control settings
Consult the descriptions provided with the various Seimens (Landis Steafa) control units, for full
instructions on application and usage. In the absence of full control instructions the following abridged
instructions will be useful.
7.1 end user parameter settings
● To enter the End User Parameter Program, the door on the RVA 47 must be opened and one of the
UP or DOWN prog buttons must be depressed.
● A number between 1 and 50 will appear in a bracket on the left of the display window. These can be
paged through by using the UP or DOWN buttons.
● To alter or input the required data in the selected program line # use the + or – buttons.
● To leave the End User Parameter Setting Menu press the AUTO button.
● The defaults indicated below are for standard systems. If additional control features are required
alteration will have to be made. Please refer to the RVA 47 manual for additional details.
● #, –, – – – Indicates where an input can be made if required.
● – – Indicates where an input cannot be made and a sensed/attenuated figure is displayed.
‘OFF’ will be displayed if the +/- buttons are used.