Blower Status Alarm; Figure 32 Dirty Filter Switch/Blower Status Switch; Figure 33 Verifying Differential Airflow Status; Figure 34 Adjusting Air Flow Alarm Delay - Bard FUSION-TEC WR36BPA Service Instructions Manual

FIGURE 32
Dirty Filter Switch and Blower Status Switch
(Set per Table 8)
FIGURE 33
Verifying Differential Airflow Status
Unit Filter Blockage %
Switch Static Setting
WR36BP*
(Default) High S/T
Evaporator Airflow %
Switch Static Setting
WR36BP*
Standard Airflow
Evaporator Airflow %
Switch Static Setting

WR58BP*

(Default) High S/T
Evaporator Airflow %
Switch Static Setting
WR58BP*
Standard Airflow
Evaporator Airflow %
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.
(WR36 set @ .012)
(WR58 set @ .020)

TABLE 8

Filter Switch Pressure Settings
0% 10%
0.12 0.12
100% 99.3%
0.12 0.12
100% 99.3%
0.40 0.50
100% 98.7%
0.30 0.35
100% 99.8%

Blower Status Alarm

If the blower is commanded on and the fan status
switch (differential pressure) has not indicated the fan
is running within 45 seconds, the system will generate
an alarm.
Disabling the blower status switch in I/O Config
disables this alarm.
This alarm is just a notification and will clear itself
when the conditions are no longer present.
To adjust the air flow alarm delay:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to System Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Alarm Setup
A8.
5. Press ENTER key to scroll to Air Flow Alarm Del
(see Figure 34).
FIGURE 34
Adjusting Air Flow Alarm Delay
20% 30% 40%
0.12 0.20 0.20
99.4% 98.7% 96.5%
0.12 0.12 0.20
99.4% 98.8% 97.3%
0.60 0.70 0.75
98.1% 97.5% 91.7%
0.40 0.45 0.50
99% 98.5% 96.8%
50% 60% 70%
0.35 0.35 0.40
92.1% 91.3% 87.9%
0.20 0.20 0.30
91.5% 89.8% 88.3%
0.80 0.90 1.00
81.3% 79.1% 78.6%
0.65 0.70 0.90
89.9% 84% 82.2%
Manual 2100-695
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