Daikin Hubbard GCU2040PXB1 Installation, Commissioning And Maintenance Manual page 170

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
HCU2020PXB1 LT 2 HP CCU
HCU2040PXB1 LT 4 HP CCU
HCU4070PXB1 LT 10 HP CCU
HCU5140PXB1 LT 20 HP CCU
MODEL DESCRIPTION
GCU2020PXB1 MT 2 HP CCU
GCU2040PXB1 MT 4 HP CCU
GCU4070PXB1 MT 10 HP CCU
GCU5140PXB1 MT 20 HP CCU
DEFINITIONS:
Max Allowable Gas Temperatures (TS):
Maximum operating Temperature (Tamb):
Maximum Running Pressure:
Max Liquid Pressure:
Pressure Rating (PS):
Copyright HPL March 2021
INTERMEDIATE
DISCHARGE
PRESSURE
PRV
PRV
None Fitted 90 Bar(g)
120 bar(g) 90 Bar(g)
120 bar(g) 80 Bar(g)
120 bar(g) 80 Bar(g)
INTERMEDIATE
DISCHARGE
PRESSURE
PRV
PRV
None Fitted 90 Bar(g)
120 bar(g) 90 Bar(g)
120 bar(g) 80 Bar(g)
120 bar(g) 80 Bar(g)
All units CO
Designed & tested to a maximum of +43°C
Liquid pressure relationship based on Tamb +43°C
Refers to liquid line pressure (before expansion valve) at
the highest ambient temperature of 43°C.
The safety rating of the line components such as
Solenoid Valves, Thermal Expansion Valves, Sight Glass
evaporators, Ball Valves etc.
SUCTION
PRESSURE
RATING
90 Bar(g)
90 Bar(g)
80 Bar(g)
80 Bar(g)
MAXIMUM
RUNNING
RATING
90 Bar(g)
90 Bar(g)
80 Bar(g)
80 Bar(g)
operation temperatures -45°C to +130°C
2
Page 170 of 172
MAXIMUM
LIQUID
RUNNING
PRESSURE
71 Bar(g)
71 Bar(g)
67 Bar(g)
67 Bar(g)
MAXIMUM
LIQUID
RUNNING
PRESSURE
71 Bar(g)
71 Bar(g)
67 Bar(g)
67 Bar(g)
P4114S Rev 03