(© Aug, 2006)
Compact CWE Series Installation, Operation & Maintenance Manual
3-1
3.0 START-UP/COMMISSIONING
3.1 Operation
For new installations, ensure the unit is ready to
operate by going through the Checklist for Completed
Installation, located in Appendix A, prior to start-up.
NOTE
A Warranty Registration and Start-Up Checklist
is provided with the unit data package. It should
be completed during start-up and sent to SATS.
This checklist should be used as a guideline for
items that need to be confirmed during start-up.
Start-up must be performed by a journeyman, refrig-
eration mechanic or an air conditioning technician.
3.2 Step by Step Start-Up Instructions
1. Replace all equipment removed prior to performing
start-up checks.
2. Ensure that the control circuit breakers, fan power
switch and additional built in optional equipment
power switches are turned on.
3. Apply power to start the Compact CWE system
at the main power disconnect switch.
4. Ensure that all blowers and fans are rotating
correctly and freely without any unusual noise.
5. Turn on the A/C unit at the system controller and
set the desired values (setpoints) for room
temperature and humidity. (Refer to the separate
controller operation instructions sent in the data
package with your unit.)
6. Test cooling operation by adjusting the tempera-
ture setpoint below actual room temperature. The
chilled water valve should open and the fan speed
should increase. The discharge air should feel
cooler than the return air.
7. Test humidification operation. Use an amp meter
to determine current draw of the humidifier. A
visual check of humidity leaving the steam head
or a hot cannister/cylinder bottle can also indicate
if the humidifier is operational. In all cases, 1 to 6
hours might be required to see a desired level or
rise of humidity in the conditioned space. Once
room conditions have been programmed or set, a
repeat visit to the conditioned site may be re-
quired to ensure the humidifier is meeting the
room's requirements.
8. Test dehumidification operation by creating a
demand for dehumidification. If necessary, create a
demand for humidification by adjusting the
setpoint 10% below actual room conditions. (The
setpoint may already be below actual room
conditions, especially at start-up. The chilled water
valve should open to begin the dehumidification
process. While in this mode, room temperature
may decrease and the reheat function may acti-
vate. As conditions in the room change, you may
have to readjust the setpoint as you check the
operation. An adequate heat load within the space
is required.
9. For Electric Reheat, use an amp meter on the
heater circuit to determine if the heater is opera-
tional. For Hot Water Reheat ensure that the
control signal has energized the control valve and
the temperature of the water has decreased as it
passes through the unit. In all cases, 1 to 6 hours
might be required to see a desired level or decrease
of humidity in the conditioned space. Once room
conditions have been programmed or set, a repeat
visit to the conditioned site may be required to
ensure the dehumidification mode is meeting the
room’s requirements.
3.3 Microprocessor Controller Programming
The microprocessor controller is factory programmed
based on the optional features selected. Most applica-
tions require no field start-up or program adjustment
beyond setting the current date and time. Separate
operating instructions for the controller have been sent
with your unit, including each feature's factory "default"
setting and the available adjustment range, if appli-
cable.
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