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Pressure Independent VAV Applications with CSP-5001/5002
33
CTE-5202 Applications Guide, AN0912A Rev. D
Cooling or Heating
~
T
T
AI1
AO
1
AO
2
CTE-5202
Thermostat
CSP-5001
Controller-Actuator
H
~
16
V
DC
I
N
O
U
T
–
–
L
24 VAC
(To Flow Sensor)
24 VAC @ 4 VA
~
–
(Phase)
(Neutral)
(5K–10K
Ohm Resistor
between AI1
and Common
for Heating
Mode Only)
CTE-5202 thermostats can use CSP-5000 series
electronic VAV controllers to operate damper boxes
in the pressure-independent VAV system. As shown
in the diagram, a “requested flow” voltage signal
(AO1) is connected to the CSP-5001 to adjust airflow
from minimum to maximum flow according to
space demand. Minimum and maximum flow limit
adjustments can be made at the thermostat or at the
controller.
For
cooling
, select Sequence
1
(from the CTE-5202
SYSTEM
menu). See
. (This replaces a CTE-5101 or a CTE-5015.)
Heating Air
Heating Max.
Heating Min.
1650
fpm
0 fpm
Setpoint
(
Colder
Room Temperature
Warmer
)
3300
fpm
Cooling Max.
Cooling Min.
1650
fpm
0 fpm
Setpoint
(
Colder
Room Temperature
Warmer
)
3300
fpm
AO1
Signal
Cooling Air
AO1
Signal
Select Sequence 1
Select Sequence 1
AND set Changeover to 55° F
For
heating
, connect a 5K to 10K ohm resistor
between Common and AI1. Select Sequence
1
and
lower the Changeover to the lowest setting (55° F).
See
Change Configuration on page 6
. The resistor
simulates a changeover sensor and puts the thermo
-
stat in Reverse Acting mode. (This replaces a CTE-
5102 with Reverse Acting reset.)
NOTE: If the resistor value is too high, the
thermostat will not go into RA mode. If
the resistor value is too low, the thermostat
may go into setback mode.
(See also the Cooling or Heating section in the
.)
Select
Sequence 1