User Manual

Siemens Building Technologies Application : 36 RWD82/36 – 04.2001
HVAC Products RWD82 1
RWD82/36
RWD82 Universal Controller
Application 36
W/S mode selection - digital
Room temperature control
Hot water control valve - 3 pos
24Vac control system
Control ( P or PI )
Room temperature control
Proportional control of the 3 position hot water valve.
Summer / winter selection of heating or cooling operation via digital input (X2)
Optional day / night set point adjustment .
S1
X1
X2
D1
Q1
Q2
CP
........RWD82.......
M1
HCV/CCV
RWD82/36
X1
X2
S1
Q1
Q2
HCV/CCV
PC
Room temperature sensor
O/A thermostat.
Time clock or switch
Opening output for HCV
Closing output for HCV
3 - position hot chilled water valve.
Personal computer
X1
Universal analogue input - main sensor
Auxiliary analogue input
Digital input
Digital output
Digital output
Communication port
T
X2
T
Room temperature sensor can be selected as Ni1000, Pt1000, or active sensor.
Adjustable proportional band of 3-position output Q1, Q2.
Integral action function selection and adjustment.
Timing of 3-position valve actuator
24Vac controller supply voltage
24Vac two position control valves
Outside air thermostat provides the digital input for winter / summer selection.
Winter / summer selection of heating and cooling mode of the Q1,Q2 outputs as
selected by digital input into auxiliary input X2 sensing outside air temperature.
Day / night set points can be selected via time clock or switch.
Supplemental features
Control
Operating modes

Summary of content (3 pages)