Operation - Vaillant VRT 90 Bedienungsanleitung

GB
1

Operation

Ensure that all the regulating valves are fully
opened on the radiators located in the same
room as the room-temperature control device (cf.
page 5)
Operating controls (front flap side, 3)
1 Day-temperature selector
Position "•" corresponds to a room
temperature of about 20 °C.
2 Operating mode selector switch
"Program" setting
When this setting is selected, the preset
program controls the room temperature.
During the heat-up phase (5a), the room
temperature is regulated according to the
setting of the day-temperature selector (1),
and during the reduction phase (5b) to the
lower temperature.
10
"Heat" setting – Permanent regulation of
the room temperature according to the day-
temperature selector (1).
"Reduce" setting – Permanent regulation
of the room temperature according to the
lower temperature.
3 Minute indicator
for showing and setting the time.
4 Markings
use a 24-hour scale to show the time,
e.g. in Fig. 1: "15" hours.
5a Heat-up phases: Time switch relay contact
on inner circle (cf.
5b Reduction phases: Time switch relay contact
on outer circle (cf.
6 24-hour scale – Numbered disc marked with
24 hourly divisions.
"Program" setting)
" Program" setting)