Armstrong Air BCE7S Series, Installation Instructions Manual

Page: 21 / 39

507746-01 Issue 1821 Page 21 of 39
Delay Profile 2
Cooling – Air Conditioner and Heat Pump
A
B C
OFF OFF
100% CFM
100% CFM
COOLING
DEMAND
45 SEC.
A. When cool demand is initiated, motor ramps up to
100% and runs at 100% until demand is satisfied.
B. Once demand is met, motor runs at 100% for 45
seconds.
C. Motor ramps down to stop.
Heating – Heat Pump Only
OFF
OFF
100% CFM
100% CFM
HEATING DEMAND
45 SEC.
30 sec
delay
A B
C
D
A. When heat demand is initiated, 30 seconds motor on
delay starts.
B. After the motor on delays expires, motor ramps up to
100% and runs at 100% until demand is satisfied.
C. Once demand is met, motor runs at 100% for 45
seconds.
D. Motor ramps down to stop.
Delay Profile 3
OFF
OFF
82%CFM
100% CFM
COOLING DEMAND
7 1/2 MIN
A
B
C
A. When cool demand is initiated, motor ramps up to
82%.
B. Motor runs at 82% for approximately 7.5 minutes and
then ramp up to 100% (unless the demand has been
satisfied) and motor runs at 100% until demand is
satisfied.
C. Once demand is met, motor ramps down to stop.
Delay Profile 4
OFF
OFF
1/2 MIN
50% CFM
COOLING DEMAND
7 1/2 MIN
82% CFM
100%
CFM
1/2 MIN
50% CFM
B
A
C
D E
A. When cool demand is initiated, motor ramps up to
50%.
B. Motor runs at 50% for 30 seconds and ramps up to
82%.
C. Motor runs at 82% for approximately 7.5 minutes and
then ramp up to 100% (unless the demand has been
satisfied) and motor runs at 100% until demand is
satisfied.
D. Once demand is met, motor runs at 50% for 30
seconds.
E. Motor ramps down to stop.
Display
An on-board single character LED display (see Figure 19
for LED display location) indicates general system status
information such as mode of operation, indoor blower CFM
and error codes. Multi-character strings are displayed with
character ON for one second, OFF for 0.5 seconds and
one second pause between the character groups.
Table 11. AHC System Status Codes
Single Character
Display
Action
Letter or Number
Unit Size Code displayed represents air handler model size and capacity. See Configuring Unit Size Codes in
Figure 21.
≡
If three horizontal bars are displayed, control does not recognize air handler model size and capacity. See
Configuring Unit Size Codes in Figure 21.
.
Idle mode (decimal point / no unit operation).
A
Cubic feet per minute (cfm) setting for indoor blower (1 second ON, 0.5 second OFF) / cfm setting for current
mode displayed. Example: A1200.
C
Cooling stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause / cfm setting displayed / Pause / Repeat
codes. Example: C1 or C2
d
Dehumidification mode (1 second ON / 1 second OFF) / cfm setting displayed / Pause / Repeat codes.
dF
Defrost mode. (Y, W and O call).
H
Heat stage (1 second ON, 0.5 second OFF) / Active electric heat stage displayed / Pause / cfm setting displayed
/ Pause / Repeat codes. Example: H1 or H2
h
Heat pump stage (1 second ON, 0.5 second OFF) / Active heat pump stage displayed / Pause/ cfm setting /
Pause/ Repeat codes. Example: h1 or h2