ZONEMASTER ZONETOUCH V2 ZONE CONTROL SYSTEM - Installation Manual
12
7.1.3 Supply Air Safety High & Low Limits
For safety reasons, the system can monitor the supply air temperature. A
supply air sensor must be inserted at the supply air end of the AC and the other
end is to be connected to the Main module, as shown on Page 7 for this safety
function to be activated. If the temperature moves outside the set limits, all
dampers in the system will be forced open. The factory default setting for the
safety control is “disabled”. It is optional for using this function.
a) On the ‘Parameter’ screen (Figure 6), touch the radio button of high limit and low
limit to enable or disable safety function.
If the supply air sensor has not been installed or the supply air sensor is faulty
and the replacement sensor is not available immediately, the system can still run
by disabling the safety function.
b) Highlight the high limit or low limit
by touching the edit fields accordingly,
and then adjust them to the required
value by touching or button
(Figure 10).
The adjustable range of the high limit
is from 45°C to 75°C and adjustable
range of the low limit is from 0°C to
15°C. The factory default values are
60°C for high limit and 5°C for low limit.
NOTE: If the limits are reached,
‘Safety is Activated’ will be displayed
on the home screen (Figure 11). The
ON/OFF function of groups will be
disabled till supply air temperature
moves back within the limits or the
High Limit and Low Limit protection is
disabled (there is about one minute
delay after disabling the protection).
Check the air conditioning unit.
Figure 10.
Figure 11.
