Manual 2100-670
Page
15 of 32
TABLE 4
Rated Airflow
Nominal Rated CFM
Nominal Rated ESP
High
Low
1800
1400
.10
TABLE 5
Indoor Blower Performance
Speed
High
Low
ESP
(Inch H20)
Dry Coil
Wet Coil
Dry Coil
Wet Coil
0.1
1885
1800
1470
1400
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.
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)
; press ENTER key.
5. Press ENTER key to scroll to
Air Flow Alarm Del
(see Figure 16).
6. Press UP or DOWN keys to change to the desired
value.
7. Press ENTER key to save the value.
FIGURE 17
Dirty Filter Switch and Blower Status Switch
FIGURE 16
Adjusting Air Flow Alarm Delay
Differential Airflow Switch
The unit is equipped with a differential pressure airflow
switch to monitor the blower (see Figure 17). If the
blower is turned on and the switch doesn't close to
indicate there is differential pressure between the inlet
and outlet of the blower, an alarm will be generated.
The switch should be set at .20.
Differential airflow status can be viewed by:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to
I/O Config
;
press ENTER key.
4. Press UP or DOWN keys to scroll to
Digital In
Config (C2)
; press ENTER key.
5. Reference
7
NoAir
row and
Val
column (see Figure
18 on page 16).
TABLE 6
Maximum ESP of Operation
Electric Heat Only
* Unit is rated for free blow non-ducted
operation with SGR-5W Supply Grille
and RGR-5W Return Grille.
Model
Static Pressure*
-A0Z
-A05
.00"
.00"
-B0Z
-B06
.00"
.00"
