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-10% to better suit the application. Table 8 below provides
blower speed adjustments that will result from different
switch settings. Refer to tables for corresponding cfm val
ues.
TABLE 8
Cooling Blower Speed Adjustment
Adjustment
+10% (approx.)
Factory Default
-10% (approx.)
Switches 9 and 10 -- Cooling Mode Blower Speed
Ramping -- Blower speed ramping may be used to en
hance dehumidification performance. The switches are
factory set at option A which has the greatest effect on de-
humidification performance. Table 9 provides the cooling
mode blower speed ramping options that will result from
different switch settings. The cooling mode blower speed
ramping options are detailed below.
NOTE - In heat pump mode blower operation defaults to
option c.
TABLE 9
Cooling Mode Blower Speed Ramping
Ramping Option
A (Factory)
B
C
D
Ramping Option A (Factory Selection)
D Motor runs at 50% for 30 seconds.
D Motor then runs at 82% for approximately 7-1/2 minu
tes.
D If demand has not been satisfied after 7-1/2 minutes,
motor runs at 100% until demand is satisfied.
D Once demand is met, motor runs at 50% for 30 sec
onds then ramps down to stop.
7 1/2 MIN
OFF
82% CFM
1/2 MIN
50% CFM
COMPRESSOR DEMAND
Ramping Option B
S Motor runs at 82% for approximately 7-1/2 minutes. If
demand has not been satisfied after 7-1/2 minutes,
motor runs at 100% until demand is satisfied.
S Once demand is met, motor ramps down to stop.
7 1/2 MIN
OFF
82%CFM
COMPRESSOR DEMAND
Switch 7
Switch 8
On
Off
Off
Off
Off
On
Switch 9
Switch 10
Off
Off
Off
On
On
Off
On
On
100%
OFF
CFM
1/2 MIN
50% CFM
100% CFM
S Motor runs at 100% until demand is satisfied.
S Once demand is met, motor runs at 100% for 45 sec
onds then ramps down to stop.
OFF
Ramping Option D
S Motor runs at 100% until demand is satisfied.
S Once demand is met, motor ramps down to stop.
OFF
Switches 11, 12 and 13 -- Heating Mode Blower Speed --
The switches are factory set to the OFF position which pro
vides factory default heat speed. Refer to table 10 for
switches 11, 12 and 13 that provided the corresponding in
creases or decrease to both high and low heat demand.
Heating Mode Blower Speeds
Heat Speed
Increase 24%
Increase 18%
Increase 12%
Increase 6%
Factory Default
Decrease 6%
Decrease 12%
Decrease18%
Switches 14 and 15 -- Continuous Blower Speed --
Table 11 provides continuous blower speed adjustments
that will result from different switch settings.
Continuous Blower Speed
Continuous
Blower Speed
28% of High Cool Speed
38% of High Cool Speed
(Factory)
70% of High Cool Speed
OFF
100% of High Cool Speed
Page 38
Ramping Option C
100% CFM
100% CFM
COMPRESSOR
45 SEC.
DEMAND
100% CFM
OFF
COMPRESSOR
DEMAND
TABLE 10
Switch
Switch
11
12
On
On
On
On
On
Off
On
Off
Off
Off
Off
Off
Off
On
Off
On
TABLE 11
Switch 14
Off
Off
On
On
OFF
Switch
13
On
Off
On
Off
Off
On
Off
On
Switch 15
On
Off
Off
On
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