Application Guide

Table Of Contents
Pressure Independent VAV Applications with CSP-4702 28 CTE-5202 Applications Guide, AN0912A Rev. H
Cooling with Heating Changeover and Hot Water Reheat
See Cooling with Heating Changeover and Electric
Reheat on page 27. This application operates the
same except for using a hot water valve instead of
electric heating elements for reheat (a VEB-43/46
series valve in place of the REE-5001 relay).
2° F
Of Loop
10%
2° F
2° F
AO1 MIN
AO1 MAX
AO1 MAX
AO1 (RA)
HOT AIR SEQUENCE (Morning Warm Up)
AUX
AO1 MIN
COLD AIR SEQUENCE
0 Volts
12 Volts
AO2 Disabled
(0 Volts)
Temp. Increasing
Cooling
Setpoint
Heating
Setpoint
Heating
Setpoint
(Hot Water Reheat)
AO2 (RA)
AO1 (DA)
When there is hot air in the duct, changeover initi-
ates, allowing the heating signal from AO1 to control
airow and AO2 to control the valve. When there
is a call for heat, the thermostat modulates the hot
water valve.
Select
Sequence 2
MEP-4002
Actuator on
VEB-43/46
Series
Valve
24 VAC
Common
Input
Out
~
T
T
AI1
AO1
AO2
CTE-5202
Thermostat
~
(Phase)
(Neutral)
(To Flow Sensor)
STE-140x Duct
Temp. Sensor
CSP-4702
Controller-Actuator
24 VAC @ 10 VA