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3.
FAN CURVE SELECTION
HRV model SHRV150DM supports two (2) field selectable fan curves:
Fan curve switch position “A” and switch position “B” (factory set).
Note that switch position “C” is unused and will provide fan curve “B” if selected.
Fan curves are selected at the HRV control board.
To select an alternate fan curve;
1. Refer to the chart below to determine the desired fan curve.
2. Disconnect supply power to HRV.
3. Remove the HRV front door and electrical control box cover.
4. Locate the fan curve slide switch, which is located on the exposed surface
of the PCB control.
5. Select either fan curve A or B by sliding the switch up or down to the desired position.
6. Reassemble and reconnect power.
Static Pressure
In. W.C.
Fan Curve “A”
Fan Curve “B”
(Factory Set)
CFM
CFM
.2”
100
150
.4”
77
127
fig. I
Transformer
Motor Capacitor (2)
Temperature Sensor
Exits Back of Control Box
Model Select Switch
Door Safety
Switch
External Control
Terminal Block
Active Mode
Display Light
Select Button
Fan Curve
Select Switch
Note: A = Low air Flow Curve
B = High air Flow Curve
Summary of Contents for Proventor II Series
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