36
STATUS screen to ensure unit is in the occupied mode.
10.
Confirm outdoor air damper opens and exhaust fan (by others) is energized.
11.
Measure outdoor air flow rate with hood, duct traverse, or other measurement
method appropriate for the installation. Airflow rate can be adjusted by the
“OA” “Occ” damper setting in the DAMPER SETTINGS menu of the controls.
Note that the flow rates for outdoor air are application specific. Refer to the
mechanical equipment schedule or other indication from the building designer
for required flow rates.
12.
Use the manometer or magnehelic pressure gauge to measure the static
pressure differential across the evaporator coil (ports #1 and #2 above).
Reading should be within limits indicated in Figure 26. Adjust the evaporator
bypass damper opening by using the control interface to adjust the “Evap”
“Occ”
damper
setting.
13.
Measure exhaust system air flow rate at the fans or blowers by others with
hood, duct traverse, or other measurement method appropriate for the
installation. Note that the flow rates for exhaust air are application specific.
Refer to the mechanical equipment schedule or other indication from the
building designer for required flow rates. Poolroom applications will require
the exhaust air flow rate to be greater than the outdoor air to maintain a
negative static pressure in the space.
3.3.3 Airflow Balancing for LV Dehumidifiers
The LV series has static pressure sensors up and down stream of the reheat
condenser. The hose barb connections (for 3/16 or 1/8” I.D. tubing) of the sensors are
accessible in the lower compartment on the LH side of the unit. The sensors are
mounted toward the return end through the mid cap/pan. The static pressure sensors
are used together with a manometer to measure the static pressure differential across
the heat exchanger. Connect the sensors to a manometer with appropriate hoses to
measure the pressure drop (in inches of water column) of the airflow through the
reheat condenser. The design pressure drop of the airflow is listed on a label on the
compartment door. The static pressure sensors should be covered when not in use to
prevent dirt from clogging the orifices. These sensors may be used with the electric
heat airflow interlock for proof of flow.
Desert Aire - LC/LV Manual
Summary of Contents for ExpertAire LC Series
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