Applications Guide
Table Of Contents
- CEP-4000 General Information
- SSE-1000/2000 Flow Sensors
- Thermostats
- VAV Single Duct Cooling/Heating Applications
- VAV Dual Duct Cooling/Heating Applications
- Index
CEP-4000 Series VAV Flow Controller-Actuators 15 Applications Guide
Cooling/Heating Changeover
The CTE-1103 electronic thermostat is a dual
setpoint thermostat for heating (RA) and cooling
(DA) applications. When using an SSE-2000 series
sensor and an REE-1005 relay module (as shown
below), an automatic changeover is provided for
heating/cooling applications. The sensor and relay
combination will switch between the T1 (cooling)
and T2 (heating) signal to the VAV terminal based on
the temperature of the supply air. Factory-dened
switch points use the T2 heating setpoint when duct
temperature is greater than 77 ± 4° F and the T1
cooling setpoint when duct temperature is less than
77 ± 4° F.
NOTE: Minimums can be set at zero airow, but
a minimum airow greater than zero is
required to assure quick changeover.
(Former Ref. # APE-1-4014)