Application Guide

Pressure Independent VAV Applications with CEP/CSP-4000 Series 47 CTE-5202 Applications Guide, AN0912A Rev. H
Cooling with 3-Stage Reheat
The application below uses an SSE-1000 series sen-
sor, an REE-4001/5001 relay module, and three 24
VAC contactors for three stages of reheat.
The transformer must supply a minimum of 10 VA
plus the requirements for the reheat contactor coils
(10 VA maximum per stage).
As the temperature drops below setpoint, the rst
stage of reheat begins. If the temperature continues
to drop, the second stage begins, and nally the
third stage if necessary.
Select Sequence 2 (from the
CTE-5202 SYSTEM menu).
See Change Conguration
on page 6. (This replaces a
CTE-1004 or a CTE-5002/5012
thermostat.)
If no Auxiliary Flow is desired,
set AO1 AUX to 0 in the
LIMITS menu.)
~
T T
AI1
AO1 AO2
CTE-5202
Thermostat
24 VAC @ 40 VA
~
–
(Phase)
(Neutral)
1
2
3
7
6
5
4
3
2
1
8
9
10
11
12
13
14
CEP-4xxx
Controller-Actuator
SSE-1001/1002
Flow Sensor
REE-4001/5001
Relay Module
~
–
24 VAC
3 2 1
Stages
3-Stage Reheat
T
24 VAC Contactors
(10 VA Max. per Stage)
2
1
3
Load
Select Sequence 2
NOTE: Triac outputs on the
REE-4001/5001 are for
24 VAC loads only.
The phase side of the
transformer connects to
the “common” side of the
load (contactors).
NOTE: See also the REE-4001
Installation Guide
and/or REE-5001
Installation Guide.
2° F
Of Loop
10%
2° F
AO1 MAX
AUX
AO1 MIN
COLD AIR SEQUENCE
0 Volts
12 Volts
Temp. Increasing
Cooling
Setpoint
Heating
Setpoint
9.5 V
3.5 V
#3
#1
6.5 V
#2
Reheat
Stages
AO2 (RA)
AO1 (DA)