Manual 2100-694B
Page
19 of 62
The blower output can be put into an override mode for
verification or troubleshooting.
To put the blower into override:
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
Blower Output
C12
; press ENTER key.
5. Press ENTER key to scroll to
Blower OV Speed
(see
Figure 29).
6. Press UP or DOWN keys to adjust the speed to the
desired output (see Table 6A, 6B or 6C).
7. Press ENTER key to scroll to
Override
.
8. Press UP or DOWN key to change
Disabled
to
Enabled
.
9. Press ENTER key to save.
FIGURE 28
Adjusting Freeze Setpoint and Alarm Delay
FIGURE 29
Putting Blower Output into Override Mode
TABLE 6A
HR35BP* Blower Speeds
Mode
Speed
Percentage
Controller
Output Volts
CFM
High Sensible
Full Load Cooling
80.0
8.0 v
1400
High Sensible
Part Load Cooling
48.0
4.8 v
1040
Standard Full
Load Cooling
55.0
5.5 v
1120
Standard Part
Load Cooling
36.0
3.6 v
900
Economizer Standard
Economizer High S/T
80.0
100.0
8.0 v
10.0 v
1200
1620
Heating
41.0
4.1 v
900
Dehumidification
Mode
20.0
2.0 v
500
EEV Operation
EEV Superheat Control
The electronic expansion valve (EEV) will modulate to
maintain a specific superheat (see Table 5) while the
compressor is running. When the compressor is not
running, the valve will open to 40% to allow system
equalization.
Low superheat protection will be active once the
superheat value is at or below 5°F. At this point,
the control will aggressively close the valve so that
superheat is maintained.
TABLE 5
Superheat Settings
Unit Size
Static Pressure*
HR35
11°F
HR36
11°F
HR58
12°F
Additional EEV Alarms
Low Superheat Alarm
This alarm will become active when the calculated
superheat goes below 5°F. This alarm will clear itself
when the condition is no longer present.
This alarm cannot be adjusted.
Indoor Airflow
Indoor Airflow Components
Blower
The unit is equipped with a blower that is driven by an
electronically commutated motor (ECM). This blower
is controlled by a 0-10v signal provided from the
controller. This 0-10v signal is converted to a PWM
signal with an adapter. The blowers on the HR35BP*,
HR36BP* and HR58BP* models use a 10" diameter
wheel. The HR35BP*operates between 500-1000 rpm,
the HR36BP* operates between 250-850 rpm and the
HR58BP* operates between 250-1400 rpm.
