IMPORTANT NOTE:
Consider only the max allowable pressures (PS) for standstill operation or in the event of a
mains power failure.
Pressure Relief Valves (PRV’s) and Pressure Safety Switches (PSS) are installed on the unit
in accordance with recommendations detailed in EN378.
CONDENSING UNIT PRV’S & MAXIMUM OPERATING PRESSURES:
PRV Ratings & Maximum Design Temperatures for each model, Hubbard Rotary
Condensing
Units are NOT supplied with Suction PRV’s
, please see details on the next pages.
MODEL
DESCRIPTION DISCHARGE
PRV
INTERMEDIATE
PRESSURE
PRV
SUCTION
PRESSURE
RATING
MAXIMUM
LIQUID
RUNNING
PRESSURE
HCU2020PXB1
LT 2 HP CCU
None Fitted
90 Bar(g)
90 Bar(g)
71 Bar(g)
HCU2040PXB1
LT 4 HP CCU
120 bar(g)
90 Bar(g)
90 Bar(g)
71 Bar(g)
HCU4070PXB1 LT 10 HP CCU
120 bar(g)
80 Bar(g)
80 Bar(g)
67 Bar(g)
HCU5140PXB1 LT 20 HP CCU
120 bar(g)
80 Bar(g)
80 Bar(g)
67 Bar(g)
MODEL
DESCRIPTION DISCHARGE
PRV
INTERMEDIATE
PRESSURE
PRV
MAXIMUM
RUNNING
RATING
MAXIMUM
LIQUID
RUNNING
PRESSURE
GCU2020PXB1
MT 2 HP CCU
None Fitted
90 Bar(g)
90 Bar(g)
71 Bar(g)
GCU2040PXB1
MT 4 HP CCU
120 bar(g)
90 Bar(g)
90 Bar(g)
71 Bar(g)
GCU4070PXB1 MT 10 HP CCU
120 bar(g)
80 Bar(g)
80 Bar(g)
67 Bar(g)
GCU5140PXB1 MT 20 HP CCU
120 bar(g)
80 Bar(g)
80 Bar(g)
67 Bar(g)
DEFINITIONS:
Max Allowable Gas Temperatures (TS):
All units CO
2
operation temperatures -45°C to +130°C
Maximum operating Temperature (Tamb):
Designed & tested to a maximum of +43°C
Maximum Running Pressure:
Liquid pressure relationship based on Tamb +43°C
Max Liquid Pressure:
Refers to liquid line pressure (before expansion valve) at
the highest ambient temperature of 43°C.
Pressure Rating (PS):
The safety rating of the line components such as
Solenoid Valves, Thermal Expansion Valves, Sight Glass
evaporators, Ball Valves etc.
Page 170 of 172
Copyright HPL March 2021
P4114S Rev 03
Содержание Hubbard GCU2040PXB1
Страница 4: ...Page 4 of 172 Copyright HPL March 2021 P4114S Rev 03...
Страница 44: ...4 Wiring Schematics Model GCU2040PXB1 Part Number D4155S Page 44 of 172 Copyright HPL March 2021 P4114S Rev 03...
Страница 49: ...6 Carel PR300T CO2 Controller manual Page 49 of 172 Copyright HPL March 2021 P4114S Rev 03...
Страница 144: ...Page 144 of 172 Copyright HPL March 2021 P4114S Rev 03...
Страница 161: ...8 PRESSURE ENTHALPY DIAGRAM FOR R744 REFRIGERANT Page 161 of 172 Copyright HPL March 2021 P4114S Rev 03...
Страница 165: ...9 Commissioning Form Page 165 of 172 Copyright HPL March 2021 P4114S Rev 03...