Technical specifications, Cations, 2 wiring – GeneralAire GFX50 User Manual
Page 10
8. TECHNICAL SPECIFICATIONS
cations
Power supply
24 Vac +10 to -15%, 50/60Hz, 1 VA
22 to 35 Vdc, 0.5W
Class 2 safety power supply
Min. cable cross-section 0.5 mm
2
.
Power supply compatible with compactSteam (G – G0)
Operating temperature
0 to 60°C, 32 to 140°F, 10 to 90% rH not-condensing
Storage temperature
-20 to 70°C, -4 to 140°F, 10 to 90% rH not-condensing
Precision of inside temperature measurement
±1°C from 0 to 60 °C, ±2°F from 32 to 140 °F
Precision of outside temperature measurement
± 1.5°C from 0 to 40°C ± 2.0°C from -40 to 0 and 40 to 80 °C
± 3°F from 32 to 104°F ± 4°F from -40 to 32and 104 to 176 °F
0 to 10 V analogue output, not isolated, for proportional control
precision ±5%
max load 5 kΩ, max current 2 mA
Relay approval
EN60730-1: NO 1(1)A 250 Vac cos = 0.4, 100,000 cycles
UL-873: NO 1A resistive 24 Vac, 30 Vdc, 100,000 cycles
PILOT DUTY: 24 Vac, peak 15 A, continuous 1 A, 30,000 cycles
Precision of humidity measurement (in models where featured)
range 10 to 90%%
± 3% rH at 25°C , 77 °F
± 5% rH 0 to 60°C, 32 to 140°F
Dimensions (mm):
135x86x36mm
Tab. 5.a
8.2 Wiring
:
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i
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d
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t
a
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o
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D
direct connection of the voltage-free contact; contact closing current: 3 to 5 mA
.
Isolated version:
with external power supply to 24 Vac contact: class 2 safety external power supply separate from the 24
Vac power supply to the instrument
Outside temperature sensor connection
with standard sensor (10 K 25 °C B=3435):
Maximum length: 30 m, min. cable cross-section 0.5 mm
2
.
Digital input connection
Maximum length 10 m, min. cable cross-section 0.5 mm
2
.
Analogue output connection
Maximum length 10 m, min. cable cross-section 0.5 mm
2
.
Relay output connections:
Maximum length 30 m, cable cross-section from 1.5 to 2.5 mm
2
, class 2 reinforced insulation from the
instrument.
Basic insulation between the relays.
cations for connections:
Use copper wires approved for a temperature of 75 C.
To tighten the terminals, apply a torque of 7 Lb/In for the black terminals (SAURO)
To use the instrument in compliance with UL-873, a load with a maximum voltage 24 Vac, class 2, can be
connected to the relay output.
Tab. 5.b
Warning:
All the connections, except for the relays, must be
connected to very low voltage circuits with reinforced insulation.
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