Minimum Position Adjustment; Enthalpy Set Point Adjustment; Enthalpy Setpoint Adjustment; Power Exhaust Damper Setpoint (With Or Without Power Exhaust) - York SUNLINE 2000 BCH 036 Installation Manual

MINIMUM POSITION ADJUSTMENT

With thermostat set to indoor fan on position, or termi-
nals "R" to "G" energized, turn the Minimum Position
Adjusting screw (located on the damper control mod-
ule) counterclockwise until the desired minimum
damper position has been attained.

ENTHALPY SET POINT ADJUSTMENT

The enthalpy setpoint may now be set by selecting the
desired setpoint shown in the Enthalpy Setpoint Adjust-
ment Figure 4. Adjust as follows:
• For a single enthalpy operation carefully turn the
setpoint adjusting screw (found on the damper
control module) to the "A", "B", "C" or "D" setting
corresponding to the lettered curve of the Enthalpy
Setpoint Adjustment Figure 4.
• For a dual enthalpy operation, carefully turn the
setpoint adjusting screw fully clockwise past the
"D" setting.
POWER EXHAUST DAMPER SETPOINT (WITH OR WITH-
OUT POWER EXHAUST)
• With no power exhaust option, adjust the Exhaust
Air Adjustment Screw fully clockwise.
• With power exhaust option, each building pressur-
ization requirement will be different. The point at
which the power exhaust comes on is determined
by the economizer damper position (Percent
Open). The Exhaust Air Adjustment Screw should
be set at the Percent Open of the economizer
damper at which the power exhaust is needed. It
can be set from 0 to 100% damper open.
12
CONTROL
CURVE
A
B
C
D
FIGURE 4 - ENTHALPY SETPOINT ADJUSTMENT
Exhaust Air
Adjustment
Screw
Exhaust Air LED
Damper Min.
Position
Screw
Indoor Air Quality
Max. Adjustment
Screw
Indoor Air Quality
LED
Indoor Air Quality
Min. Adjustment
Screw
Free Cooling LED
Economizer Enthalpy
Set Point Adjustment
Screw
FIGURE 5 - HONEYWELL ECONOMIZER CONTROL
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177820-YIM-A-0506
CONTROL POINT
0 0 85 90
APPROX. F ( C)
AT 50% RH (29) (32)
73 (23)
80
70 (21)
(27)
67 (19)
63 (17)
75
(24)
70
(21)
65
(18)
60
(16)
55
A
(13)
B
50
(10)
C
45
(7)
D
40
(4)
35
(2)
A
B
C
D
35 40 45 50 55 60 65 70 75 80 85 90
(2) (4) (7) (10) (13) (16) (18) (21) (24) (27) (29) (32)
APPROXIMATE DRY BULB TEMPERATURE -
EXH
N
N1
Set
EXH
P1
P
Min
Pos
T1
T
IAQ
Max
IAQ
AQ1 AQ
IAQ
SO+ SO Min
Free
Cool
SR+ SR
B C
A D

W7212

Unitary Products Group
95 100 105 110
(35) (38) (41) (43)
95 100 105 110
(35) (38) (41) (43)
0 0
F ( C)
TR TR1
24 24
Vac Vac
HOT COM
+
1
2
5
3
4
EF EF1