Distech Controls RT Series User Manual

25
Default value = 0 No lock
2 = High level
Level
Resume/
Override
scheduling
Permanent
Occupied and
Unoccupied
Setpoints
Temporary
setpoints using
arrows
System mode
setting
Fan mode
setting
Schedules
setting
Clock setting
Resume
sched Y/N
RoomTemp
set Y/N
Up key (▲)
Down key (▼)
Sys mode
set Y/N
Fan mode
set Y/N
Schedule
set Y/N
Clock
set Y/N
0
Yes access
Yes access
Yes access
Yes access
Yes access
Yes access
Yes access
1
Yes access
No access
Yes access
No access
No access
No access
Yes access
2
No access
No access
No access
No access
No access
No access
Yes access
pwr del
Power-up delay
Default value = 10 seconds
On initial power up of the thermostat ( each time 24 Vac
power supply is removed & re-applied ) there is a delay
before any operation is authorized ( fan, cooling or
heating ). This can be used to sequence start up multiple
units / thermostat in one location.
10 to 120 seconds
Frost pr
Frost protection enabled
Default value = Off
On heat pump models the system mode will be
forced to EMERGENCY mode if frost protection
is activated
Off: no room frost protection
On: room frost protection enabled in all system mode at:
42 °F ( 5.6 °C )
Frost protection is enabled even in system Off mode
Off or On
heat max
Maximum heating setpoint limit
Default value = 90 °F ( 32 °C )
Maximum occupied & unoccupied heating setpoint
adjustment. Heating setpoint range is:
40 to 90 °F ( 4.5 to 32.0 °C )
cool min
Minimum cooling setpoint limit
Default value = 54 °F ( 12 °C )
Minimum occupied & unoccupied cooling setpoint
adjustment. Cooling setpoint range is:
54 to 100 °F ( 12.0 to 37.5 °C )
Pband
Proportional Band setting
Default value 2 = 2.0 °F ( 0.6 °C )
Adjust the proportional band used by the thermostat PI
control loop.
Warning. Note that the default value of 2.0 °F ( 1.1 °C )
gives satisfactory operation in most normal installation
cases. The use of a superior proportional band different
than the factory one is normally warranted in applications
where the thermostat location is problematic and leads to
unwanted cycling of the unit. A typical example is a wall
mounted unit where the thermostat is installed between
the return and supply air feeds and is directly influenced
by the supply air stream of the unit.
Value
F scale Pband
C scale Pband
2
2 F
1.1 C
3
3 F
1.7 C
4
4 F
2.2 C
5
5 F
2.8 C
6
6 F
3.3 C
7
7 F
3.9 C
8
8 F
4.4 C
Anticycle
Minimum on/off operation time for stages
Default value = 2 minutes
Anti-short cycling can be set to 0 minutes for
equipment that posses their own anti cycling
timer. Do not use that value unless the
equipment is equipped with such internal timer.
Failure to do so can damage the equipment.
Minimum On/Off operation time of cooling & heating
stages.
IMPORTANT, anti-short cycling can be set to 0 minutes
for equipment that posses their own anti cycling timer. Do
not use this value unless the equipment is equipped with
such internal timer. Failure to do so can damage the
equipment.
0, 1, 2, 3, 4 & 5 minutes
Heat cph
Heating stages cycles per hour
Default value = 4 C.P.H.
Will set the maximum number of heating stage cycles per
hour under normal control operation. It represents the

Distech Controls RT Series Specifications

General

Brand	Distech Controls
Model	RT Series
Category	Thermostat
Language	English