DIRECT
SPECIFICATION
24 TECHNICAL SPECIFICATION
OPERATION
Heating
The temperature setting operates on the principle of set point
regulation and can be fixed within application limits.
Heating Set Point
(Logic HIU Direct MT)
: 45 to 65°C
Heating Set Point
(Logic HIU Direct HT)
: Function not available
Heating circuit: Maximum pressure rating: As Primary and
Heating circuit controls permit.
Pump: UPM3 Auto L
Pump bypass setting: 0.45 bar
Heating control circuit is VOLT FREE
Domestic Hot Water - DHW
The DHW function takes priority over the heating function
controlled by the DHW priority flow switch
Set Point - DHW temperature 42 to 60°C
Domestic hot water: 10 bar
DHW circuit max. Flow rate: 18 l/m (0.3 l/s)
Min.flow rate to activate domestic flow sensor: 2.7 l/m ±0.3
Max. Differential pressure on domestic water modulating valve:
Δp 0.9 bar
Min. Differential pressure on domestic water modulating valve:
Δp 0.35 bar
Heat exchanger capacity: Nom. DHW heat exchanger net
output: 50 kW - Logic HIU Indirect 50.
Optional Pre-heat function.
Primary Performance
Max. Working pressure: Primary circuit: 10 bar
Maximum temperature: 85°C
Medium: Water
Max. Percentage of glycol 30%
Max. Recommended primary circuit flow rate: 1.2 m³/h
Electrical
Power supply: 230 V (ac)±10% 50 Hz
Power consumption: 80 W
Protection class: IP 40
Actuator: stepper 24 V
Probes: NTC 10 kΩ
Construction
Frame: RAL 9010 sprayed steel
Protective shell cover: PPE
Components: brass BS EN 12165 CW617N
Pipes: stainless steel
Exchanger: brazed stainless steel
LOGIC HIU DIRECT MT & LOGIC HIU DIRECT HT
15
LOGIC HIU
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Installation & Servicing / Users