55
CONTROL
CURVE
A
B
C
D
CONTROL POINT
APPROX.
deg. F (deg. C)
AT 50% RH
73 (23)
7 (21)
7 (19)
3 (17)
12
1
4
1
1
2
2
2
24
2
2
3
32
3
4
3
3
4
42
44
4
9
1
7
4
3
2
1
ENTHALPY BTU PER POUND DRY AIR
(29)
9
(32)
9
(3 )
1
(3 )
1
(41)
11
(43)
35
(2)
3
(2)
40
(4)
4
(4)
1
(41)
11
(43)
4
(7)
4
(7)
(1 )
(1 )
(13)
(13)
(1 )
(1 )
(1 )
(1 )
7
(21)
7
(21)
7
(24)
7
(24)
(27)
(27)
(29)
9
(32)
9
(3 )
1
(3 )
D
D
RELATIVE HUMIDITY (%)
HIGH LIMIT
CURVE
APPROXIMATE DRY BULB TEMPERATURE--degrees F (degrees C)
C06037
Fig. 70
−
Enthalpy Changeover Setpoints
TR1
24 Vac
COM
TR
24
Vac
HOT
1
2
3
4
5
EF
EF1
+
_
P1
T1
P
T
N
EXH
2V
10V
EXH
Set
Set
2V
10V
2V
10V
DCV
DCV
Free
Cool
B
C
A
D
SO+
SR+
SR
SO
AQ1
AQ
DCV
Min
Pos
Open
Max
N1
FACTORY JUMPER
C06038
Fig. 71
−
EconoMi$er IV Control
Differential Enthalpy Control
For differential enthalpy control, the EconoMi$er IV
controller uses two enthalpy sensors (HH57AC078 and
CRENTDIF004A00), one in the outside air and one in the
return air duct. The EconoMi$er IV controller compares
the outdoor air enthalpy to the return air enthalpy to
determine EconoMi$er IV use. The controller selects the
lower enthalpy air (return or outdoor) for cooling. For
example, when the outdoor air has a lower enthalpy than
the return air, the EconoMi$er IV opens to bring in
outdoor air for free cooling.
Replace the standard outside air dry bulb temperature
sensor with the accessory enthalpy sensor in the same
mounting location. See Fig. 61. Mount the return air
enthalpy sensor in the return air duct. See Fig. 69. Wiring
is provided in the EconoMi$er IV wiring harness. See Fig.
62. The outdoor enthalpy changeover setpoint is set with
the outdoor enthalpy setpoint potentiometer on the
EconoMi$er IV controller. When using this mode of
changeover control, turn the enthalpy setpoint
potentiometer fully clockwise to the D setting.
Indoor Air Quality (IAQ) Sensor Input
The IAQ input can be used for demand control ventilation
control based on the level of CO
2
measured in the space
or return air duct.
Mount the accessory IAQ sensor according to
manufacturer specifications. The IAQ sensor should be
wired to the AQ and AQ1 terminals of the controller.
Adjust the DCV potentiometers to correspond to the DCV
voltage output of the indoor air quality sensor at the
Содержание 48TC 17 Series
Страница 39: ...39 C10818 Fig 45 RTU OPEN Control Module ...
Страница 82: ...82 APPENDIX IV WIRING DIAGRAMS cont C12615 Fig 73 48TC D17 D28 Control Diagram 208 230 3 60 460 575 3 60 ...
Страница 83: ...83 APPENDIX IV WIRING DIAGRAMS cont C12616 Fig 74 48TC D17 D28 Power Diagram 208 230 3 60 ...
Страница 84: ...84 APPENDIX IV WIRING DIAGRAMS cont C12266 Fig 75 48TC D17 D28 Power Diagram 460 3 60 ...
Страница 85: ...85 APPENDIX IV WIRING DIAGRAMS cont C12618 Fig 76 48TC D17 D28 Power Diagram 575 3 60 ...
Страница 86: ...86 APPENDIX IV WIRING DIAGRAMS cont C14061 Fig 77 48TC D17 D28 Control Diagram with Humidi MiZer ...
Страница 87: ...87 APPENDIX IV WIRING DIAGRAMS cont C12620 Fig 78 48TC D17 D28 Power Diagram 208 230 3 60 with Humidi MiZer ...
Страница 88: ...88 APPENDIX IV WIRING DIAGRAMS cont C12621 Fig 79 48TC D17 D28 Power Diagram 460 3 60 with Humidi MiZer ...
Страница 89: ...89 APPENDIX IV WIRING DIAGRAMS cont C12622 Fig 80 48TC D17 D28 Power Diagram 575 3 60 with Humidi MiZer ...
Страница 91: ...91 APPENDIX IV WIRING DIAGRAMS cont C13766 Fig 82 PremierLinkt System Control Wiring Diagram with Humidi MiZer ...
Страница 92: ...92 APPENDIX IV WIRING DIAGRAMS cont C13767 Fig 83 RTU OPEN Wiring Diagram ...
Страница 93: ...93 APPENDIX IV WIRING DIAGRAMS cont C13768 Fig 84 RTU OPEN Wiring Diagram with Humidi MiZer ...
