Quantech QWC4, Installation Operation & Maintenance, Page: 106 / 156

QUANTECH
106
FORM QWC4-NM1 (221)
ISSUE DATE: 02/28/2021
SECTION 6 - OPERATION
Display, if control is enabled.
VI STEP SOLENOID 1 = ON OR OFF
VI STEP SOLENOID 2 = ON OR OFF
RUN TIME
## DAYS ## HOURS ## MINUTES ## SECONDS
RUN SIGNALS RELAY = ON OR OFF
RUN PERM = ON OR OFF SOFTWARE = ON OR OFF
EDUCTOR TEMP = ###.# °F
TABLE 35 - SENSOR MINIMUM/MAXIMUM OUTPUTS
SENSOR/INPUT TYPE MINIMUM VALUE MAXIMUM VALUE
*Condenser Pressure Transducer 0 psig/0 kPa 400.0 psig (2.76 MPa)
Discharge Pressure Transducer 0 psig/0 kPa 400.0 psig (2.76 MPa)
Oil Pressure Transducer 0 psig/0 kPa 400.0 psig (2.76 MPa)
Economizer Pressure Transducer 0 psig/0 kPa 275 psig (1.89 MPa)
Evaporator Pressure Transducer 0 psig/0 kPa 125.0 psig (.086 MPa)
Cond Liquid Refrig Level Capacitance 0% 100%
Economizer Temp 3 K Ω Thermistor 18.83°F (-7.31°C) 175.61°F (79.7°C)
Leaving Condenser Liquid
Temp
3 K Ω Thermistor 18.83°F (-7.31°C) 175.61°F (79.7°C)
Entering Condenser Liquid
Temp
3 K Ω Thermistor 18.83°F (-7.31°C) 175.61°F (79.7°C)
Leaving Chilled Liquid Temp 3 K Ω Thermistor -19.1°F (-28.49°C) 110.2°F (43.4°C)
Entering Chilled Liquid Temp 3 K Ω Thermistor -19.1°F (-28.49°C) 110.2 °F (43.4°C)
Compressor Motor Temp 10 K Ω Thermistor -30.2°F (-34.56°C) 302.0° F (150°C)
Discharge Temp 50 K Ω Thermistor 40.3°F (4.61°C) 302.0° F (150°C)
*Evaporator Temp 3 K Ω Thermistor -4.87°F (-20.3°C) 158.34°F (70.2°C)
*Subcooled Liquid Refrig Temp 3 K Ω Thermistor 18.83°F (-7.31°C) 175.61°F (79.7°C)
Remote Temp Reset
4–20 mA / 2–10 V
0–20 mA / 0–10 V
0% 100%
Remote Current Limit
4–20 mA / 2–10 V
0–20 mA / 0–10V
0% 100%
Condenser Hot Water
Leaving Temp
3 K Ω Thermistor 18.83°F (-7.31°C) 175.61°F (79.7°C)
Condenser Hot Water
Entering Temp
3 K Ω Thermistor 18.83°F (-7.31°C) 175.61°F (79.7°C)
Remote Heat Recovery Temp
Reset Option
4–20 mA / 2–10 V
0–20 mA / 0–10 V
0% 100%
Eductor Temp 3 K Ω Thermistor 18.83°F (-7.31°C) 175.61°F (79.7°C)
* Based on engineering assessment, the "Condenser Transducer", "Evaporator Thermistor" and "Subcooled Liquid Refrigerant Thermistor" are
redundant and can be removed. if these 3 sensors are not physically available, they should be disabled in "SETUP MODE", generally these
setups have been done in plant before shipment, however service people shall re-set them per the description of section "PROGRAM KEY"
under some circumstance such as a controller replaced or software updated.
Sensor Displays
Table 36 on page 106 lists all the sensors attached
to the control board associated with SYSTEM DATA
keys. The minimum and maximum values displayed
are provided. If these values exceed the limits, a < (less
than) or > (greater than) sign will be displayed.