Manual 2100-670I
Page
21 of 47
Unit
Filter Blockage %
0%
10%
20%
30%
40%
50%
60%
70%
HR36AP*
(Default) High S/T
Switch Static Setting
0.12
0.12
0.12
0.20
0.20
0.35
0.35
0.40
Evaporator Airflow %
100%
99.3% 99.4% 98.7% 96.5% 92.1% 91.3% 87.9%
HR36AP*
Standard Airflow
Switch Static Setting
0.12
0.12
0.12
0.12
0.20
0.20
0.20
0.30
Evaporator Airflow %
100%
99.3% 99.4% 98.8% 97.3% 91.5% 89.8% 88.3%
HR58AP*
(Default) High S/T
Switch Static Setting
0.40
0.50
0.60
0.70
0.75
0.80
0.90
1.00
Evaporator Airflow %
100%
98.7% 98.1% 97.5% 91.7% 81.3% 79.1% 78.6%
HR58AP*
Standard Airflow
Switch Static Setting
0.30
0.35
0.40
0.45
0.50
0.65
0.70
0.90
Evaporator Airflow %
100%
99.8%
99%
98.5% 96.8% 89.9%
84%
82.2%
All units tested equipped with MERV 8 filters. Appropriate supply (SG) and return (RG) grilles installed during testing.
Pressure switch adjustment may be necessary due to variations in filter type, installation and room pressure.
Bard recommends filter switch be set at 50% filter blockage or less. Higher settings may significantly hinder unit
performance.
TABLE 7
Filter Switch Pressure Settings
AIRSTREAM BEFORE FILTER
TUBE LOCATED IN
COVER
REMOVE COVER
SCREW TO
TUBE LOCATED IN
AIRSTREAM AFTER FILTER
MIS-3901
ADJUSTMENT
INDICATOR ARROW
ADJUSTMENT
KNOB
FILTER
LIGHT
FIGURE 33
Dirty Filter Switch and Filter Indicator Light
MIS-3901
