Proxel DTSF3+ Manual

Proxel Engineering Ltd ------------------------www.proxel-bg.com-----------------
„DTSF3+" Temperature Controller For Solar Thermal And Heating
Application With 8 Schemes

BRIEF DESCRIPTION

The unit is a programmable digital temperatute controller for solar thermal and
heating plants. It manages the interaction between the solar collector, hot water tank,
storage tank, boiler, pumps, valves and electric heater. The unit helps to improve
thermal comfort by combining high efficiency with autonomy of the system. The
joint functional work of differential temperature, built-in clock and a flexible treshold temperatures
further helps to increase energy savings. It has 8 pre-programmed functional diagrams which cover
vast range of prooved by practice application. The application of the device extends from thermo-
syphonic solar water heaters to more complex solar systems with a combination of hot water tank
and storage tank, boiler and heating. It also can control one HF pump with PWM input.

Functional diagrams, schemes, sensors and outputs arrangement:

1 Scheme 0 – Thermosyphonic panel with integrated tank and trace heating
Level sensor: Controls electric valve for proper boiler fill up while monitoring the water level with submerged
electrode.
2 Scheme 1- Thermosyphonic panel with integrated tank and recirculation;
3 Scheme 2- Solar panel with one storage tank and electric heater (standard)
4 Scheme 2а - Solar panel with two storage tanks – Ta-with electric heater, Tb-with solar heating,
-DTSF3+
Schm=0; "TSyphTrH"
Sensors
• TS1 – trace temperature
• TS2 – solar tank temperature
• TS3 – not used;
• Level sensor - Terminals 3 and 4
Outputs
R1 – trace heater
•
• R2 – electric heater of solar operated tank
•
R3 – refill valve (N.C.)
Schm=1; "TSyphReC"
Sensors
• TS1 – temperature of suplimentary tank/recirculation point
• TS2 – solar tank temperature
• TS3 – trace temperature
Outputs
• R1 – recirculation pump
• R2 – electric heater of solar operated tank
• R3 – * valve – not used
Schm=2; „dT.EL+T1"
Sensors
• TS1 – temperature of solar panel
• TS2 – tank temperature at bottom (at coil position)
• TS3 – tank temperature at top (for heater control)
Outputs
• R1 – solar pump
R2 – electric heater of tank
•
• R3 – emergency draining valve
Schm=2; „dT.EL+T1"
Sensors
TS1 – temperature of solar panel
•
• TS2 – temperature of electric heater operated tank
• TS3 – temperature of solar operated tank
Outputs
• R1 – solar pump
R2 – electric heater of tank
•
• R3 – emergency draining valve
v2.4 /2017
5 Scheme 3 - Solar panel with two storage tanks – main and suplimentary with priority
6 Scheme 3а - Solar panel with one tank with two solar coils and electric heater
7 Scheme 4 - Solar panel with one tank with two coils, electric heater and suplimentary heater
8 Scheme 5 - Solar panel with one tank with two coils, suplimentary heater and heating pump
9 Scheme 6 – Solar/supplementary heater with two tanks and two pumps, no priority
10 Scheme 7 – Unpreasurized solar panel (open to air system) with el. heater and refill function
Level sensor: Controls electric valve for proper solar panel fill up while monitoring the water level with
submerged electrode.
Sensors Schm=3;"dTETa/Tb"
• TS1 – temperature of solar panel
• TS2 – temperature of tank („A") - main
• TS3 – temperature of tank („B") -suplimentary
Outputs
• R1 – solar pump
• R2 – electric heater of tank („A")
R3 – 3-way valve main/suplimentary tank
•
Schm=3;"dTETa/Tb"
Sensors
• TS1 – temperature of solar panel
• TS2 – temperature of tank – top („A")
TS3 – temperature of tank – bottom („B")
•
Outputs
• R1 – solar pump
• R2 – electric heater of tank
• R3 – 3-way valve top/bottom
Schm=4; "1B+2C+EL"
Sensors
• TS1 – temperature of solar panel
• TS2 – tank temperature
• TS3 – suplimentary heating source temperature
Outputs
• R1 – solar pump
• R2 – electric heater of tank
R3 – DHW suplimentary heating valve/pump
•
Schm=5; "SolDhwCh"
Sensors
TS1 – temperature of solar panel
•
• TS2 – tank temperature
• TS3 – suplimentary heating source temperature
Outputs
• R1 – solar pump
• R2 – circulation pump for domestic heating
• R3 – DHW suplimentary heating valve/pump
Schm=6; "SOL+2P2T"
Sensors
• TS1 – temperature of heat source
• TS2 – temperature of tank – "A"
• TS3 – temperature of tank – "B"
Outputs
• R1 – pump for tank "А"
R2 – electric heater of tank "А"
•
• R3 – pump for tank "B"
Schm=7; "dT.EL.T1+R"
Sensors
• TS1 – temperature of solar panel
• TS2 – temperature of solar tank
• TS3 – not used
Level sensor - Terminals 3 and 4; reads level of liquid
•
Outputs
• R1 – solar pump
• R2 – electric heater of tank
• R3 – refill valve (N.C.)
2