Auto And Override (To Fully Closed Or Fully Open) - KMC Controls CTE-5202 Application Manual

Auto and Override (to Fully Closed or Fully Open)

Adding a SPDT relay or switch enables overriding
the air flow to fully open or fully closed. (Otherwise
the examples below are the same as the cooling
configuration in Cooling or Heating on page
The "Override to Fully Closed" wiring diagram
below allows the CTE-5202 thermostat to control the
CSP-5001 controller as normal (auto) or override the
flow setting to fully closed.
The SPDT relay selects one of the two modes (Auto/
Fully Closed). In the relay position shown below, the
controller will override the flow setting. (Jumping
"–" and "IN" drives the CSP-5001 fully closed.)
NOTE: If a minimum limit was set in the CSP-500x
controller, the damper will only close to the
minimum limit setting.
When the relay switches to Auto, the thermostat will
then control the VAV box based on demand.
Override to Closed
CSP-5001
Controller-Actuator
(To Flow Sensor)
H
L
16 O
V I U
24 VAC
– –
~
DC N T
Pressure Independent VAV Applications with CSP-5001/5002
33.)
~ (Phase)
24 VAC @ 4 VA
– (Neutral)
CTE-5202
Thermostat
Close
SPDT
Relay
Auto
The "Override to Fully Open" wiring illustration
below allows the CTE-5202 thermostat to control the
CSP-5001 controller as normal (Auto) or override the
flow setting to fully open.
In the relay position shown, the controller will over-
ride the flow setting. (Jumping "16 VDC" and "IN"
drives the CSP-5001 fully open.)
NOTE: If a maximum limit was set in the CSP-500x
controller, the damper will only open to the
maximum limit setting.
When the relay switches to Auto, the thermostat will
control the VAV box based on demand.
(See also the Auto, Override to Fully Closed, or
Override to Fully Open section with a CTE-5101 in
the CSP-5001/5002 Applications
CSP-5001
Controller-Actuator
(To Flow Sensor)
H
L
16 O
V I U
24 VAC
– –
DC N T
Select Sequence 1
34
Guide.)
Override to Open
~ (Phase)
– (Neutral)
~
Open
SPDT
Relay
Auto
CTE-5202 Applications Guide, AN0912A Rev. D
24 VAC @ 4 VA
CTE-5202
Thermostat