JOHNSON CONTROLS
153
SECTION 8 – SERVICE
FORM 100.50-NOM6
ISSUE DATE: 8/07/2017
8
TABLE 38 -
DUCT PRESSURE TRANSDUCER
1.25" WC SPAN
DIFFERENTIAL
INPUT PRESS
2.5" WC SPAN
DIFFERENTIAL
INPUT PRESS
5.0" WC SPAN
DIFFERENTIAL
INPUT PRESS
VOLTAGE
VDC
0.125
0.25
0.5
0.50
0.25
0.50
1.0
1.00
0.375
0.75
1.50
1.50
0.50
1.00
2.00
2.00
0.625
1.25
2.50
2.50
0.75
1.50
3.00
3.00
0.875
1.75
3.50
3.50
1.00
2.00
4.00
4.00
1.125
2.25
4.50
4.50
1.25
2.50
5.00
5.00
Discharge Pressure Transducer
The discharge Pressure Transducer is located in the
common discharge line of the tandem compressors for
each refrigerant circuit. The purpose of this transducer
is to sense and convert the discharge pressure into a
DC voltage. The DC voltage is then sent to the Unit
Controller where it is used to control the number of
condenser fan when the unit is in cooling operation.
The discharge pressure value, in PSIG, is displayed by
the User Interface.
The Discharge Transducer has a range of 0 to 650
PSIG, with a linear output of 0 to 5VDC.
illustrates the DC volt output from the trans-
ducer for a given discharge pressure.
Suction Pressure Transducer
The optional suction pressure transducer is located in
the common suction line of the tandem compressors
for each refrigerant circuit. The purpose of the trans-
ducer is to sense and convert the suction pressure to
a DC voltage. The DC voltage is then sent to the Unit
Controller where it is displayed by the User Interface.
When this option is installed the Unit Controller will
also calculate and display the Evaporator Superheat
value for the system.
The Suction Transducer has a range of 0 to 400 PSIG,
with a linear output of 0 to 5VDC.
illustrates the DC volt output from the transducer
for a given suction pressure.
TABLE 39 -
BUILDING PRESSURE TRANSDUCER
OUTPUT
DIFFERENTIAL INPUT
PRESSURE - IWC
OUPTUT VOLTAGE - VDC
-0.50
0.00
-0.40
0.50
-0.30
1.00
-0.20
1.50
-0.10
2.00
0.00
2.50
0.10
3.00
0.20
3.50
0.30
4.00
0.40
4.50
0.50
5.00
TABLE 40 -
RETURN FAN PRESSURE
TRANSDUCER OUTPUT
DIFFERENTIAL INPUT
PRESSURE - IWC
OUPTUT VOLTAGE - VDC
-1.00
0.00
-0.80
0.50
-0.60
1.00
-0.40
1.50
-0.20
2.00
0.00
2.50
0.20
3.00
0.40
3.50
0.60
4.00
0.80
4.50
1.00
5.00
Содержание 050
Страница 112: ...JOHNSON CONTROLS 112 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE SENSOR READINGS LD13017 ...
Страница 113: ...JOHNSON CONTROLS 113 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 ECONOMIZER EXHAUST LD13018 ...
Страница 114: ...JOHNSON CONTROLS 114 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE FANS LD13019 ...
Страница 115: ...JOHNSON CONTROLS 115 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 COOLING SETUP LD13020 ...
Страница 116: ...JOHNSON CONTROLS 116 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE COOLING STATUS LD13021 ...
Страница 117: ...JOHNSON CONTROLS 117 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 HEATING SETUP LD13022 ...
Страница 118: ...JOHNSON CONTROLS 118 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE HEATING STATUS LD13023 ...
Страница 119: ...JOHNSON CONTROLS 119 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 SYSTEM OPTIONS LD13024 ...
Страница 120: ...JOHNSON CONTROLS 120 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE OUTPUTS STATUS LD13025 ...
Страница 122: ...JOHNSON CONTROLS 122 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE GRAPHIC LD13027 CLOCK LD13028 ...
Страница 125: ...JOHNSON CONTROLS 125 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 ALARMS LD13031 ...
