Balancing Diagram - Aprilaire 8100 Owner's Manual

DIAGRAM SHOWING POSITION OF AIR FLOW
MEASURING DEVICES AND BALANCING DAMPERS
AIR FLOW
MEASURING DEVICE
(RESEARCH PRODUCTS
#5158)
FRESH AIR
TO HOUSE
(DAMPERED
DUCT)
STALE AIR TO
OUTSIDE
(INSULATED DUCT)
* A sound absorber at least 6' long consisting of 1" thick
rigid fiberglass duct or insulated flexible duct (ATCO
series 70 or equivalent) is recommended for maximum
absorbing of air movement sounds between the unit and
the living space return grille.
NOTE: Dampers, air flow measuring devices and pressure
gauges not included.
Form No. 3028 2.5.08.01
DP10002582
AIR FLOW
MEASURING DEVICE
(RESEARCH PRODUCTS
#5158)
5' MINIMUM
STRAIGHT
SECTION
DAMPER
P.O. BOX 1467 • MADISON, WI 53701-1467 • Phone 608/257-8801 • FAX 608/257-4357
5' MINIMUM
STRAIGHT
DAMPER
PRESSURE GAUGES
FIGURE 11
Airflow in a 6" duct as measured using
RP Airflow Measuring Device #5158
Gauge
Readings
(in. w.g.)
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0.045
0.050
0.055
0.060
–16–
STALE AIR
FROM HOUSE
(DAMPERED
DUCT)
SECTION
(INSULATED
Gauge
Airflow Readings
(cfm) (in. w.g.)
30 0.065
44 0.070
55 0.075
64 0.080
72 0.085
80 0.090
86 0.095
93 0.100
98 0.105
104 0.110
109 0.115
114 0.120
FRESH AIR
FROM
OUTSIDE
DUCT)
Airflow
(cfm)
119
124
128
132
137
141
145
149
152
156
160
163
Printed in U.S.A.