Solar & system controllers

RCM compliant according to Australian standards

DeltaSol<sup>®</sup> BS/2 Solar controller

DeltaSol^® BS series Solar controller

The RESOL controllers for standard solar thermal systems. The DeltaSol^® BS series provides a clear operating concept. The intuitive commissioning menu leads you through the initial configuration in only a few steps. The system selected is shown on the display, the status of the individual components is indicated by means of flashing codes. The DeltaSol^® BS series is available in 3 versions, depending on the demands. Details concerning the number of the relays as well as additional functions are shown in the technical data.

DeltaSol^® BS/2 - Solar controller with store temperature limitation

Article no.: 115 412 33 | Price bracket A | Price on request

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Drainback option
Heat quantity measurement
Function control
Commissioning menu
Unit °C and °F selectable
HE pump control via adapter

DeltaSol^® BS/4, BS Plus
3 basic system layouts (DeltaSol^® BS/4), 10 basic system layouts (DeltaSol^® BS Plus) to choose from
Tube collector function, thermal disinfection function, time-controlled thermostat function

Max. number of collector fields:

1 [BS/2, BS/4], 2¹ [BS Plus]

Max. number of stores:

1 [BS/2, BS/4], 2¹ [BS Plus]

Weather-compensated heating circuits:

External heat exchanger:

Speed control of standard pumps:

Speed control of HE pumps:

■ via integrated PWM output:

■ via PSW adapter:

Hardware

Temperature sensor inputs:

Sensor type:

Pt1000

Inputs for Grundfos Direct Sensors™:

Input for CS10 irradiation sensor:

Impulse inputs for V40 flowmeter:

Relay outputs in total:

1 [BS/2], 2 [BS/4, BS Plus]

■ semiconductor relays (speed control):

1 (1) [BS/2], 2 (1) [BS/4], 2 (2) [BS Plus]

■ electromechanical relay:

■ potential-free relay with changeover contact:

■ potential-free relay with normally open contact:

■ potential-free high-current relay:

PWM outputs:

■ convertible to 0-10 V:

Real-time clock:

[BS/4, BS Plus]

Data interface:

VBus^®

Energy-efficient SMPS:

Power supply:

100 ... 240 V~

Heat quantity measurement

■ with flowmeter:

[BS/2, BS/4] ¹[BS Plus]

■ with V40 flowmeter:

■ with Grundfos Direct Sensors™:

Software functions

Antifreeze function for solar circuit:

Collector minimum limitation:

Collector emergency shutdown:

Store maximum limitation:

Store set temperature:

Store emergency shutdown:

Tube collector function:

[BS/4, BS Plus]

■ with adjustable time frame, interval:

[BS/4, BS Plus]

Additional ΔT control:

¹ [BS Plus]

Thermostat function:

¹ [BS/4, BS Plus]

Target temperature:

Heat dump function:

¹ [BS/4, BS Plus]

Heat exchange:

¹ [BS Plus]

Store loading in layers:

¹ [BS Plus]

Priority loading:

¹ [BS Plus]

■ Parallel loading:

¹ [BS Plus]

■ Store sequence control:

¹ [BS Plus]

■ Progressive loading:

¹ [BS Plus]

■ Successive loading:

¹ [BS Plus]

■ Spreaded loading:

¹ [BS Plus]

Solar circuit bypass:

Irradiation-dependent bypass:

Irradiation switch:

Afterheating suppression:

Parallel relay:

Twin pump for solar circuit:

Cooling functions and cooling mode:

Flow rate monitoring:

Pressure monitoring:

Function control:

Error relay:

DHW hygiene functions:

■ DVGW legionella protection:

■ Thermal disinfection:

[BS/4, BS Plus]

DHW heating:

[BS/4, BS Plus]

Heating circuit return preheating:

¹ [BS Plus]

Boiler loading/Zone loading:

Solid fuel boiler:

¹ [BS Plus]

Mixer control weather-compensated:

Mixer control with target temperature:

Circulation:

Function block:

Heating circuit antifreeze function:

Chimney sweeper function for the heating circuit:

Room thermostats:

¹ system-dependent

Inputs: 4 Pt1000 temperature sensors
Outputs:
1 semiconductor relay (DeltaSol^® BS/2)
2 semiconductor relays (DeltaSol^® BS/4, DeltaSol^® BS Plus)
Switching capacity: 1 (1) A 100 ... 240 V~ (semiconductor relay)
Total switching capacity: 1 A 240 V~ (DeltaSol^® BS/2), 2 A 240 V~ (DeltaSol^® BS/4, DeltaSol^® BS Plus)
Power supply: 100 – 240 V~ (50 – 60 Hz)
Supply connection: type Y attachment
Standby:
0.45 W (DeltaSol^® BS/2)
0.74 W (DeltaSol^® BS/4), 0.38 W (DeltaSol^® BS Plus)
Temperature controls class: I (DeltaSol^® BS/4, DeltaSol^® BS Plus)
Energy efficiency contribution: 1 % (DeltaSol^® BS/4, DeltaSol^® BS Plus)
Mode of operation: type 1.C.Y action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus^®
VBus^® current supply: 35 mA
Functions: differential temperature controller with adjustable system functions: function control according to BAFA guidelines, operating hours counter, tube collector function (DeltaSol^® BS/4, DeltaSol^® BS Plus), heat quantity measurement and pump speed control
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, mounting into patch panels is possible
Indication/Display: System-Monitoring for visualisation of systems, 16-segment and 7-segment display, 8 symbols for indication of system status and operating control lamp
Operation: 3 pushbuttons at the front
Ingress protection: IP 20 / IEC 60529
Protection class: II
Ambient temperature: 0 ... 40 °C
Pollution degree: 2
Dimensions: 172 x 110 x 49 mm
Maximum altitude: 2000 m above MSL
Fuse: T4A