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Fan Powered Terminal Units IOM
ANALOG CONTROLS
INSTALLATION AND BALANCING PROCEDURES
The Analog Electronic Control System is a pressure
independent volume reset control that uses a KMC CSP-4702
controller-actuator (see Fig. 13).
Adjustments for the minimum and maximum airflow
settings are made at the thermostat. The thermostat (CTE-
5202) operates on a 16 VDC power supply from the CSP 4702
controller and outputs a 0 to 10 VDC signal on the AO1 and
AO2 terminals. AO1 is used as the cooling output and AO2 is
used as the heating output.
THERMOSTAT INSTALLATION
For proper operation, mount the thermostat on an interior
wall. Do not mount the thermostat in a location that will
cause it to be affected by direct sunlight or other heat or cold
sources. The thermostat should be clear of all obstructions
so it can properly sense the room temperature. Complete
rough-in wiring at each location prior to thermostat
installation. Cable insulation must meet local building codes.
1. Remove thermostat cover. If the thermostat is locked on
the back plate, turn the two hex screws in on the bottom
of the cover (in the two outermost holes) in the back plate
CLOCKWISE until they clear the cover. Do not remove
these screws completely. Swing the thermostat up and
away from the back plate to remove it.
2. Route the wires through the opening in the back plate.
Figure 13: CSP-4702 Controller/Actuator
3.
Install the back plate directly to the junction box using
the screws supplied with the thermostat. Verify the hex
screws used for securing the cover are located at the
bottom before installing.
4. Connect the wires to the terminal block. Refer to the
wiring diagram located on the inside cover of the control
enclosure of each unit showing the wiring terminations.
The wiring schematic can also be found on the control
sequence submittal found on the Krueger website.
5.
Replace the thermostat cover. Turn the two hex screws
COUNTER CLOCKWISE until they are flush with the
bottom cover and secure it to the back plate.
PROGRAMMING THERMOSTAT
1. The thermostat has three sequences that are selectable
from the display screen. To access the configuration menu
on the thermostat, press and hold the Up and Down
arrows for 10 seconds until the display starts flashing
“LIMITS”. Use the Up and Down arrows to scroll between
the different menu options or set a specific value. Use the
Setpoint button to select a menu or set a value.
2.
To set the minimum and maximum airflow limits, Use
AO1 Min and AO1 Max or AO2 Min and AO2 Max. Use the
Table 34 below to determine thermostat setting for the
CFM per inlet size.
3.
For details on how to program the thermostat for each
control sequence see the specific control sequence
submittal. The control sequence submittals can be at the
Krueger Website: www.krueger-hvac.com.
NOTE: Adjustments for the minimum and maximum airflow settings are made at the thermostat. The thermostat (CTE-5202)
operates on a 16 Vdc power supply from the CSP 4702 controller and outputs a 0 to 10 Vdc signal on the AO1 and AO2 terminals.
AO1 is used as the cooling output and AO2 is used as the heating output." before Thermostat installation.
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