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VSP2−1 VARIABLE SPEED CONTROL BOARD SELECTIONS
HIGH Speed
MAXIMUM CFM
SELECTION
LOW Speed
MINIMUM CFM
SELECTION
POSITION 2
SELECTION
RE-
QUIRED
JP1
15 PIN PLUG
(BOARD TO VARIOUS POINTS IN FUR-
NACE)
BDC3 VARIABLE SPEED CONTROL BOARD SELECTIONS
ACCESSORY RELAY CONTACTS
(DRIVES OPTIONAL
ACCESSORY RELAY)
OPERATIONAL
SELECTOR PINS
(Affects both heating and cooling
modes)
1
JP2
HIGH
LOW
ADJUST
1
1
2
2
3
3
4
4
HTG.
HEAT
DS3
BLOWER
DS2
ON/OFF
1
2
JP1
1
Figure 6
JP1
ACC
24V/1A
NORM
4
+
3
−
2
TEST
1
ADJUST
HEAT
COOL
MAXIMUM
NOT USED
CFM SELECTION
Figure 7
Page 13
JP2
13 PIN PLUG
HEAT
(BOARD TO MOTOR)
TEST
1
−
2
+
3
NORM
4
HI/LOW
DS4
DS1
CFM
210
150
DIAGNOSTIC
LEDS
4
4
3
3
2
2
1
1
DELAY
CFM
RUN
FAN DELAY
SELECTOR PINS
PRIMARY LIMIT
TRIPPED CFM
OPERATIONAL
SELECTOR PINS
Affects both High
and Low CFM
DIAGNOSTIC
DS LEDS
FAN OFF
TIMING PINS
JP1
15 PIN PLUG
(BOARD TO MOTOR)
NOTE − Minimum blower
CFM is not adjustable.
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