ERV
HE2XRT
RENEWAIRE.COM
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
1.800.627.4499
16
MEASURING AIR FLOW
START-UP & OPERATION
EQUIPMENT REQUIRED
• A magnehelic gauge or other device capable of
measuring 0 to 1.5 in. water of differential pressure.
• 2 pieces of natural rubber latex tubing, 1/8" ID,
1/16" Wall works the best.
NOTE:
Be sure to remove cap from pressure port
before inserting tubing. Insure tubing is well seated
in pressure ports.
NOTE:
The tubing should extend in the pressure
port approx. 1 inch.
DIFFERENTIAL STATIC ACROSS CORE DSP VS. CFM
HE2XR
T
DSP
0.20
0.30
0.40
0.50
0.60
0.70
0.80
Fresh Air (FA)
CFM
550
820
1190
1370
1640
1920
2190
Room Air (RA)
CFM
560
850
1130
1410
1690
1970
2250
The individual differential static pressures (DSP)
can be measured using the installed pressure ports
located in the front of the units core access doors.
NOTE:
These ports have been carefully located on
the unit as to give you the most accurate airflow
measurement. Do not relocate pressure ports.
• To read SCFM of Fresh Air (FA) install the “high”
pressure side (+) of your measuring device to
the Outside Air (OA) port and the “low” pressure
side (-) to the Fresh Air (FA) port.
• To read SCFM of Room Air (RA) install the “high”
pressure side (+) of your measuring device to
the Room Air (RA) port and the “low” pressure
side (-) to the Exhaust Air (EA) port.
• Use the reading displayed on your measurement
device to cross reference the CFM output using
the conversion chart.
NOTE:
Be sure to replace cap into pressure port
when air flow measuring is completed.
CROSS CORE STATIC PRESSURE MEASUREMENT INSTRUCTIONS
The proper operating airflow range
for this model is 500 - 2200 CFM.
CAUTION
F5
AIRFLOW DIAGRAM HE2XRT
EA
RTH, RTF
ONLY
RA
RTV, RTR
ONLY
RA
RTV, RTF
ONLY
FA
OA
FA
RTH, RTR
ONLY
Pressure
Taps (4)
