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RG66007967 - Rev 02
(*) This value can only be reached during storage and determines the saturation pressure of 30 bar-r of the refrigerant on the
low pressure side of the circuit, which actually defines the limits.
The nominal flow rate refers to a temperature differential of 5°C between inlet and outlet water, in relation to the cooling
capacity provided at the nominal water temperatures (12/7°C).
The maximum flow rate allowed is that associated with a temperature differential of 3°C. higher flow rates cause high
pressure drops.
The minimum flow rate allowed is that associated with a temperature differential of 8°C. lower flow rates could cause
excessively low evaporation temperatures, which could trigger the safety devices and stop the unit, or cause incorrect
distribution and risk of heat transfer with non-turbulent or not fully turbulent motion conditions.
HiWarm 33 operating limits for the following produced water and outdoor air temperature:
Water flow to evaporator
Heat transfer fluid: water or mixture of water and max 30% glycol anti-freeze
Maximum water side pressure: 5 bar
Maximum pressure on high pressure side 41.5 bar-r
Maximum ambient Temp of the indoor unit 42°C
Minimum ambient Temp of the indoor unit -10°C
Maximum pressure on low pressure side 29 bar-r (*)
Power supply voltage: +/- 10% compared to the voltage on the plate.
Maximum storage Temp of the indoor unit +42°C
Minimum storage Temp -20°C (limit determined by on board electronics)
