Building Technologies / HVAC Products CE1B2726en01
29.08.2008
1/2
B2726.01
Operating instructions
QAX850 / RRV852
QAX850 is a master room unit for the RRV852
Duo-zone control system
. This system allows you to control your heating and /
or cooling and to set your ideal temperature conditions within the two main areas of your home. The system is divided into the
main living area (Day zone) and the main night time area (Night zone). An Auto Timer mode with a 7-day programmable
schedule is provided. Factory settings are already set however you can adjust these to suit your personal needs.
System On and Fan Speed control
Press to turn system on or off and to select fan speeds - Low / Medium / High / Auto Fan and System Off. If your
system is single speed fan only, then simply press to turn system on or off.
When powering up, the QAX850 will display all LCD symbols. It will then revert to normal display. The time
segments will be flashing if time needs to be set.
The system off mode turns the whole system off and is indicated by a standby symbol
. Some systems will
include extreme high / low temperature protection activation during
– contact your supplier for further details.
Setting actual time and day
Press
button one time to set the time clock. (You will need to reset clock if there is a power loss of more than 20
minutes.)
Press or button to set the current time and then press
to confirm.
If current time is 12-hour format and you wish to change to 24-hour format, press button passing 11:59PM or
press button passing 12:00AM.
If current time is 24-hour format and you wish to change to 12-hour format, press button passing 23:59 or press
button passing 00:00.
Press
button 2 times within 2 seconds.
Day symbol flashes.
Press
or
button to set the current
weekday.
Press
to confirm. (
1
= Monday
through
7
= Sunday).
Operation modes
Press
button to cycle through Day zone or
Night zone or both Day and Night zone or Auto
Timer
mode.
Do you want Day zone operation only?
Press
button until display shows
symbol.
Day zone temperature is maintained according
to the Day zone setpoint. A Heat or Cool
symbol will be displayed to indicate the
selected system mode.
Do you want Night zone operation only?
Press
button until display shows symbol.
Night zone temperature is maintained
according to the Night zone setpoint. A Heat
or Cool symbol will be displayed to indicate
the selected system mode.
Do you want both Day and Night zones to
operate together?
Press
button until display shows both
symbol. Day and Night zone temperature is
maintained according to the Both zone setpoint
and the average actual temperature between
both zones. Heat or Cool
symbol will be
displayed to indicate the selected system mode.
System Off (Standby)
Day zone: System supplies air to the day zone
only and controls to the day zone temperature
setpoint
Night zone: System supplies air to the night
zone only and controls to the night zone
temperature setpoint
Both Day/Night zone: System supplies air to
both the day and night zones and controls to the
Both zone temperature setpoint
Auto timer mode: System will change over
between Day zone and standby or Night zone
and standby
Heating
Cooling
A1 ... A8
Time program
AUTO
Auto fan speed
Low / Medium / High fan speed
1
...
7
Weekday indication
/
Weekday
1
..
7
