Thermo Technologies USDT 3002 - Manual (Page 5)

USDT 3002
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S1
S2
S4 / TRF
1.2.1 Allocation of terminals for system 1 Standard solar system with 1 tank, 1 pump and 3 sensors.
The sensor S4 / TRF can optionally be used for a flow meter
or 4th temperature sensor
R1
Arr 1
S3
R2
S1
S2
R1
S3
S4 / TRF
Solars system with 1 tank, 3 sensors and 2nd relay (R2).
The sensor S4 / TRF can optionally be used fas a flow meter
or a 4th temperature sensor.
Arr 2
1.2.2 Allocation of terminals for system 2 (Arr 2)
Symbol Specification
S1 collector sensor
S2 tank sensor below
S3 tank sensor at the top
S4 / TRF optional sensor for flow
- meter/additional tempe-
rature input
R1 solar pump
R2 pump for heat exchange
Symbol Specification
S1 Collector sensor
S2 Tank sensor below
S3 Tank sensor at the top
(optionally)
S4 / TRF 4th s ensor for or flow
meter (optionally)
R1 Solar pump