Revision 2.3
Page 12 of 14
Warning
Please Note
The specifications of the product detailed on this
Set-Up Guide may change without notice. RDM
Ltd. shall not be liable for errors or for incidental
or consequential damages, directly and indirectly,
in connection with the furnishing, performance or
misuse of this product or document.
Ensure that all power is
switched off before
installing or maintaining
this product
ML Multistage Thermostat Installation Guide
www.resourcedm.com
Operation:
The stat has 4 relays which have their own set-points, diff and alarm settings. Each can be set-up as either a heating stage or a cooling
stage. When set as a heating stage, the diff acts above the set-point; when set to cooling, the diff acts below the set-point.
The thermostat function will not operate unless the fans are running.
Fans can be set to manually on, off, on through a 7 day internal timer (local) or through a GP timer in a Data Manager/Director front panel
(remote).
When the timer period goes off, the thermostat function will stop, but the fans can have a run-on period (P-04) which will keep the fans
running until the run-on period expires.
Network Alarms
Alarm text
Type # (index)
Over Temperature
4
Under Temperature
5
Log Over Temperature
8
Log Under Temperature
9
Probe 1 Fault
6
Probe 2 Fault
6
Probe 3 Fault
6
Probe 4 Fault
6
Plant Fault 1
3
Plant Fault 2
3
ON OFF ON
ON OFF ON
OFF ON OFF
OFF ON OFF
Cooling 2 Setpoint
Cooling 2 Diff (Below)
Heating 2 Setpoint
Heating 2 Diff (Above)
Cooling 1 Setpoint
Cooling 1 Diff (Below)
Heating 1 Diff (Above)
Heating 1 Setpoint
Heating 1 Relay
Heating 2 Relay
Cooling 1 Relay
Cooling 2 Relay