Resol DeltaSol CS Plus User Manual

DeltaSol® CS Plus

version 1.10

Mounting Connection Application examples Operation Troubleshooting

*11202673*

11202673

Thank you for buying this RESOL product. Read this manual carefully to get the best perfomance from this unit. Please keep this manual carefully.

Manual

www.resol.com

Safety advice

Please pay attention to the following safety advice in order to avoid danger and damage to people and property.

Instructions

Attention must be paid to the valid local standards, regulations and directives!

Target group

These instructions are exclusively addressed to authorised skilled personnel. Only qualiﬁed electricians should carry out electrical works. Initial installation must be effected by qualiﬁed personnel named by the manufac-

turer.

Description of symbols

WARNING!

Warnings are indicated with a warning triangle!

Î They contain information on how to avoid the danger

described.

Signal words describe the danger that may occur, when it is not avoided.

• WARNING means that injury, possibly life-threatening injury, can occur.

• ATTENTION means that damage to the appliance can occur.

Note

Notes are indicated with an information symbol.

Î Arrows indicate instruction steps that should be carried out.

Information about the product

Proper usage

The solar controller is designed for use in solar thermal systems and heating systems in compliance with the technical data speciﬁed in this manual.

Improper use excludes all liability claims.

CE Declaration of conformity

The product complies with the relevant directives and is therefore labelled with the CE mark. The Declaration of Conformity is available upon request, please contact the manufacturer.

Note

Strong electromagnetic ﬁelds can impair the function of the controller.

Î Make sure the controller as well as the system are not exposed to

strong electromagnetic ﬁelds.

Disposal

• Dispose of the packaging in an environmentally sound manner.

• Dispose of old appliances in an environmentally sound manner. Upon request we will take back your old appliances bought from us and guarantee an environmentally sound disposal of the devices.

Subject to technical change. Errors excepted.

Contents

1 Installation ........................................................................................... 5

1.1 Mounting ........................................................................................................................5

1.2 Electrical connection ...................................................................................................5

1.3 VFD Grundfos Direct Sensor™ ............................................................................... 7

1.4 PWM outputs ................................................................................................................7

1.5 Data communication / Bus .......................................................................................... 7

1.6 Terminal allocation in the different system layouts ..............................................8

2 Operation and function .................................................................... 46

2.1 Push buttons ............................................................................................................... 46

2.2 System-Monitoring-Display ..................................................................................... 46

2.3 Flashing codes ............................................................................................................ 47

3 Commissioning .................................................................................. 48

4 Channel overview .............................................................................. 51

4.1 Display channels ......................................................................................................... 51

4.2 Adjustment channels ................................................................................................ 54

5 Troubleshooting ................................................................................. 67

5.1 Various ......................................................................................................................... 68

6 Accessories ........................................................................................ 70

Overview

• System-Monitoring-Display

• Up to 4 Pt1000 temperature sensors

• 2 semiconductor relays for pump speed control

• 10 basic system layouts to choose from

• 1 input for a VFD Grundfos Direct Sensor™

• Heat quantity measurement

• VBus

• Function control

• Thermostat function (time-controlled)

• Control of the system by ServiceCenter software possible

• User-friendly operation

• Housing with outstanding design

• Extra-low power consumption

• HE pump control

• Drainback option

172

Technical data

Inputs: 4 Pt1000 temperature sensors, 1 VFD Grundfos Direct Sensor™

Outputs: 2 semiconductor relays, 2 PWM outputs

PWM frequency: 512 Hz

PWM voltage: 10,5 V

Switching capacity:

R1: 1 (1) A 100 ... 240 V~ (semiconductor relay) R2: 1 (1) A 100 ... 240 V~ (semiconductor relay)

Total switching capacity: 2 A 240 V~

Power supply: 100 … 240 V~ (50 … 60 Hz)

Supply connection: type Y attachment

Power consumption: < 1 W (standby)

Mode of operation: type 1.C.Y action

Rated impulse voltage: 2.5 kV

Data interface: RESOL VBus

VBus® current supply: 35 mA

Functions: function control, operating hours counter, tube collector function,

thermostat function, speed control, drainback option with booster function and heat quantity measurement

Housing: plastic, PC-ABS and PMMA

Mounting: wall mounting, mounting into patch panels is possible

Indication / Display: System-Monitoring-Display for visualisation of systems,

16-segment and 7-segment display, 8 symbols for indication of system status

Operation: 3 push buttons at the front

Ingress protection: IP 20 / EN 60529

Protection class: I

Ambient temperature: 0 … 40 °C [32 … 104 °F]

Pollution degree: 2

Dimensions: 172 x 110 x 46 mm

110

1 Installation

WARNING!

1.1 Mounting

The unit must only be installed

• in a dry interior location

• in a non-hazardous location

• away from electromagnetic ﬁelds The controller must additionally be supplied from a double-pole switch with con-

tact gap of at least 3 mm. Route sensor cables and power supply cables separately.

Î Unscrew the cross-head screw from the cover and remove it along with the

cover from the housing Î Mark the upper fastening point on the wall and drill Î Fasten the enclosed wall plug and screw leaving the head protruding Î Hang the housing from the upper fastening point and mark the lower fastening

point through the hole in the terminal box (centers 130 mm) Î Drill and insert the lower wall plug Î Fasten the housing to the wall with lower fastening screw and tighten Î Complete wiring connections in accordance with terminal allocations, see

chap. 2.2 “Electrical connection” Î Place the cover back onto the housing Î Fasten the cover by means of the cross-head screw

Electric shock!

Opening the housing will expose live parts!

Î Switch off power supply and disconnect the device from

power supply before opening the housing!

display

cover

cable conduits with strain relief

fuse 2A

push button

lower fastening

130

1.2 Electrical connection

WARNING!

ESD damage!

Electrostatic discharge can lead to damage to electronic components!

Î Take care to discharge properly before touching

the inside of the device. To do so, touch a grounded surface such as a radiator or tap!

Note:

The minimum pump speed must be set to 100 % when auxiliary relays or valves are connected.

Note:

The mains connection must be carried out with the common ground of the building to which the pipework of the solar thermal system is connected.

upper fastening

1 (1) A 240 V~ 1 (1) A 240 V~

R1 R2

2019

171615

14131212

NR2

IP 20

T2A

100 ... 240 V~

50-60 Hz

PE and load terminals

1 (1) A 240 V~ 1 (1) A 240 V~

2019

17161514131212

NR2

IP 20

T2A

100 ... 240 V~

50-60 Hz

345678910

1 (1) A 240 V~ 1 (1) A 240 V~

R1 R2

2019

171615

14131212

NR2

IP 20

T2A

100 ... 240 V~

50-60 Hz

Temp. Sensor Pt1000

S2S1 S3 S4 VBus

PWM 1/2

VFD

Made in Germany

DeltaSol

CS Plus

345678910

Connecting the device to the mains supply must always be the last step of the installation!

The power supply to the controller must be carried out via an external power switch (last step!). The supply voltage must be 100 … 240 V~ (50 … 60 Hz). Flexible cables must be attached to the housing with the enclosed strain relief and the corresponding screws.

The controller is equipped with two semiconductor relays, to which loads such as

pumps, valves etc. can be connected:

Relay 1 Relay 2

18 = conductor R1 16 = conductor R2 17 = neutral conductor N 15 = neutral conductor N 13 = protective conductor 14 = protective conductor

The mains supply is to be carried out at the terminals: 19 = neutral conductor N 20 = conductor L

12 = protective conductor ⏚ The temperature sensors (S1 up to S4) are to be connected to the following

terminals with either polarity: 1 / 2 = Sensor 1 (e.g. Sensor collector 1) 3 / 4 = Sensor 2 (e.g. Sensor store 1) 5 / 6 = Sensor 3 (e.g. Sensor store top) 7 / 8 = Sensor 4 (e.g. Sensor return) All Pt1000 temperature sensors are equipped with a platinum measuring element

in their tip. The electrical resistance of the measuring element changes in relation to the temperature (see table in chap. 5).

The difference between FKP and FRP type sensors only lies in the cable insulation material. The insulation material of FKP type sensor cables resists a higher temperature, so that FKP type sensors should be used as collector sensors. FRP type sensors are best used as reference sensors in stores or pipes.

Made in Germany

DeltaSol

CS Plus

PWM 1/2

R1 R2

fuse

VFD

Temp. Sensor Pt1000

S2S1 S3 S4 VBus

Sensor terminals S1 … S4

VBus

load terminalssensor terminals PE terminals

power supply terminals

1.3 VFD Grundfos Direct Sensor™

1 (1) A 240 V~

IP 20

T2A

100 ... 240 V~

50-60 Hz

PWM 1/2

Made in Germany

DeltaSol

CS Plus

1 (1) A 240 V~ 1 (1) A 240 V~

R1 R2

2019

171615

14131212

NR2

IP 20

T2A

100 ... 240 V~

50-60 Hz

The controller is equipped with 1 input for a digital VFD Grundfos Direct Sensor™ for measuring the ﬂow rate and the temperature. Connection is made at the VFD terminal (bottom left).

1.4 PWM outputs

The speed of a HE pump is adjusted through a PWM signal. In addition to connection to the relay, the pump must be connected to one of the PWM outputs of the controller.

Power is supplied to the HE pump by switching the corresponding relay on or off. The terminals marked „PWM 1/2“ are control outputs for pumps with PWM con-

trol input.

1 = PWM output 1, control signal 2 = PWM output 1, GND 3 = PWM output 2, GND 4 = PWM output 2, control signal

1.5 Data communication / Bus

VBus®

connection terminals

The controller is equipped with a RESOL VBus® for data transfer with and energy supply to external modules. The connection is carried out at the terminals marked “VBus” (either polarity). One or more RESOL VBus® modules can be connected via this data bus, such as

• GA3 Large Display, SD3 Smart Display

• DL3 Datalogger

• DL2 Datalogger

• VBus

/ USB or VBus® / LAN interface adapter

• AM1 Alarm Module

• WMZ calorimeter module By means of a Datalogger or an interface adapter, the controller can be connected

to a PC or a computer network. Different solutions for visualisation and remote parameterisation are availabe on the RESOL website www.resol.com.

1.6 Terminal allocation in the different system layouts

VBus

PWM 1/2

VFD

System layout 1

The controller calculates the temperature difference between collector sensor S1 and store sensor S2. If the difference is larger than or identical to the adjusted switch-on temperature difference (DT O), the solar pump will be operated by relay 1, and the store will be loaded until the switch-off temperature difference (DT F) or the maximum store temperature (S MX) is reached.

Sensors S3 and S4 can optionally be connected for measurement purposes. S3 can optionally be used as reference sensor for the store emergency shutdown option (OSEM).

If heat quantity measurement (OHQM) is activated, S4 and VFD are to be connected as ﬂow and return sensors respectively.

If the drainback option (ODB) is activated, relay 2 can be used to operate a booster pump by activating the booster function (OBST).

S3 / TSTT

Drainback system layout

exemplary

(with booster pump)

S4 / VFD / TFL

R1 R2

S4 / VFD / TR

Display Channels

Channel Description Terminal Page INIT FLL STAB COL x Temperature collector S1 TST x Temperature store S2 S3 x Temperature sensor 3 S3 TSTT x* Temperatur store at the top S3 S4 x Temperature sensor 4 S4

TFL x* Temperature ﬂow sensor S1 / S4 / VFD

TR x* Temperature return sensor S4 / VFD

VFD x* Temperature Grundfos Direct Sensor™ VFD L/h x* Flow rate Grundfos Direct Sensor™ VFD

n % x Pump speed R1 R1 hP x Operating hours R1 R1 hP1 x* Operating hours R1 (if OBST is activated) R1 hP2 x* Operating hours R2 (if OBST is activated) R2 kWh x* Heat quantity kWh MWh x* Heat quantity MWh TIME x Time -

Adjustment Channels

Channel Description Factory setting Page Arr x System 1 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] DT S x Nominal temperature difference R1 10.0 K [20.0 °Ra]

PUM1 x Pump control type R1 PSOL

RIS x Rise control R1 2 K [4 °Ra]

nMX x Maximum pump speed R1 100 %

nMN x Minimum pump speed R1 30 % S MX x Maximum store temperature 60 °C [140 °F] OSEM x Option store emergency shutdown OFF

EM x

OCC x Option collector cooling CMX x* Maximum collector temperature OSYC x Option system cooling OFF

x* x*

ODB initialisation active ODB ﬁlling time active ODB stabilisation in progress -

Emergency temperature collector 130 °C [270 °F] Emergency temperature collector if ODB is activated: 95 °C [200 °F]

OFF 110 °C [230 °F]

51 51 51 51 51 51 51 51 51 51 51 52 52 54 54 54 52 52 52

54 54 54 54 55 55 55 55 56 56 56 56 57 57 57

Adjustment Channels

Channel Description Factory setting Page

DTCO x* Cooling switch-on temperature difference DTCF x* Cooling switch-off temperature difference OSTC x Option store cooling OFF OHOL x* Option holiday cooling OFF THOL x* Holiday cooling temperature 40 °C [110 °F] OCN x Option minimum limitation OFF CMN x* Minimum collector temperature 10 °C [50 °F] OCF x Option antifreeze OFF CFR x* Antifreeze temperature 4.0 °C [40.0 °F] O TC x Option tube collector OFF TCST x* OTC starting time 07:00 TCEN x* OTC ending time 19:00 TCRU x* OTC runtime 30 s TCIN x* OTC standstill interval 30 min

GFD x Grundfos Direct Sensor™ OFF

OHQM x Option heat quantity measurement OFF

SEN x* VFD allocation 2

FMAX x* Maximum ﬂow 6.0 l/min MEDT x* Antifreeze type 1 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 % ODB x Drainback option OFF tDTO x* ODB switch-on condition - time period 60 s tFLL x* ODB ﬁlling time 5.0 min tSTB x* ODB stabilisation time 2.0 min OBST s* Option booster function OFF MAN1 x Manual operation R1 Auto MAN2 x Manual operation R2 Auto LANG x Language En UNIT x Temperature unit °C RESE x Reset - back to factory settings ######## Version number

20.0 K [40.0 °Ra]

15.0 K [30.0 °Ra]

Legend:

Symbol Speciﬁcation

x Channel is available

x* Channel is available if the corresponding option is activated.

s Channel is speciﬁcally available in this system layout

s* System-speciﬁc channel, only available if the corresponding option is activated

57 57 57 57 59 59 59 59 59 61 61 61 61 61 61 63 63 63 63 63 64 64 64 64 64 64 64 64 64 64

System layout 2

VBus

PWM 1/2

VFD

Heat exchange from store 1 to store 2 will be operated by relay 2, if the temperature difference between sensors S3 and S4 is larger than or identical to the

adjusted switch-on temperature difference (DT3O), until the adjusted minimum (MN3O) and maximum (MX3O) temperature thresholds of the respective stores are reached. S3 can optionally be used as reference sensor for the store emergency shutdown option (OSEM).

If heat quantity measurement (OHQM) is activated, S1and VFD are to be connected as ﬂow and return sensors respectively.

VFD / TR

Store 1 Store 2

S3 / TSTT

Display Channels

Channel Description Terminal Page INIT x* ODB initialisation active - 51 FLL x* ODB ﬁlling time active - 51 STAB x* ODB stabilisation in progress - 51 COL x Temperature collector S1 51 TST1 x Temperature store 1 base S2 51 TSTT x Temperature store 1 at the top S3 51 TST2 x Temperature store 2 base S4 51

TFL x* Temperature ﬂow sensor S1 51 TR x* Temperature return sensor VFD 51 VFD x* Temperature Grundfos Direct Sensor™ VFD 51 L/h x* Flow rate Grundfos Direct Sensor™ VFD 52

n1 % x Pump speed R1 R1 52 n2 % x Pump speed R2 R2 52 h P1 x Operating hours R1 R1 54 h P2 x Operating hours R2 R2 54

kWh x* Heat quantity kWh - 52 MWh x* Heat quantity MWh - 52

TIME x Time - 52

Adjustment Channels

Channel Description Factory setting Page Arr x System 2 54 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 54 DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 54 DT S x Nominal temperature difference R1 10.0 K [20.0 °Ra] 54 RIS x Rise control R1 2 K [4 °Ra] 55

PUM1 x Pump control type R1 PSOL 55

n1MN x Minimum pump speed R1 30 % 55

n1MX x Maximum pump speed R1 100 % 55

S MX x Maximum store temperature 60 °C [140 °F] 56 OSEM x Option store emergency shutdown OFF 56

PUM2 x Pump control type R2 OnOF 55

n2MN x* Minimum pump speed R2 30 % 55

n2MX x* Maximum pump speed R2 100 % 55

EM x

Emergency temperature collector 130 °C [270 °F] 56 Emergency temperature collector if ODB is activated: 95 °C [200 °F] 56

Adjustment Channels

Channel Description Factory setting Page OSTC x Option store cooling OFF 57 OHOL x* Option holiday cooling OFF 57 THOL x* Holiday cooling temperature 40 °C [110 °F] 59 OCN x Option minimum limitation OFF 59 CMN x* Minimum collector temperature 10 °C [50 °F] 59 OCF x Option antifreeze OFF 59 CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 59 O TC x Option tube collector OFF 61 TCST x* OTC starting time 07:00 61 TCEN x* OTC ending time 19:00 61 TCRU x* OTC runtime 30 s 61 TCIN x* OTC standstill interval 30 min 61

GFD x Grundfos Direct Sensor™ OFF 61

OHQM x Option heat quantity measurement OFF 63 MEDT x* Antifreeze type 1 63 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 % 63 DT3O s Switch-on temperature difference R2 6.0 K [12.0 °Ra] 54 DT3F s Switch-off temperature difference R2 4.0 K [8.0 °Ra] 54 DT3S s Nominal temperature difference R2 10.0 K [20.0 °Ra] 54 RIS3 s Rise control R2 2 K [4 °Ra] 55 MX3O s Switch-on treshold for maximum temperature 60.0 °C [140.0 °F] 39 MX3F s Switch-off treshold for maximum temperature 58.0 °C [136.0 °F] 39 MN3O s Switch-on treshold for minimum temperature 5.0 °C [40.0 °F] 39 MN3F s Switch-off treshold for minimum temperature 10.0 °C [50.0 °F] 39 ODB x Drainback option OFF 64 tDTO x* ODB switch-on condition - time period 60 s 64 tFLL x* ODB ﬁlling time 5.0 min 64 tSTB x* ODB stabilisation time 2.0 min 64 MAN1 x Manual operation R1 Auto 64 MAN2 x Manual operation R2 Auto 64 LANG x Language En 64 UNIT x Temperature unit °C 64 RESE x Reset - back to factory settings 64 ######## Version number

Legend:

Symbol Speciﬁcation

x Channel is available

x* Channel is available if the corresponding option is activated.

s Channel is speciﬁcally available in this system layout

s* System-speciﬁc channel, only available if the corresponding option is activated

System-speciﬁc functions

The following adjustments are used for the speciﬁc function in system layout 2.

∆T control for the heat exchange between 2 stores

DT3O:

Switch-on temperature diff. Adjustment range: 1.0 … 20.0 K [2.0 … 40.0 °Ra] in steps of 0.5 K [1 °Ra] Factory setting: 6.0 K [12.0 °Ra]

DT3F:

Switch-off temperature diff. Adjustment range: 0.5 … 19.5 K [1.0 … 39.0 °Ra] in steps of 0.5 K [1 °Ra] Factory setting: 4.0 K [8.0 °Ra]

Reference sensors for this function are S3 and S4.

In system layout 2 the controller is equipped with an additional differential control for heat exchange between two stores. The basic differential function is adjusted using the switch-on (DT3O) and switch-off (DT3F) temperature differences.

When the temperature difference exceeds the switch-on temperature difference, relay 2 switches on. If the temperature difference then falls below the adjusted switch-off temperature difference, relay 2 switches off.

Note:

The switch-on temperature difference must be at least 0.5 K [1 °Ra] higher than the switch-off tempe rature difference.

Pump speed control

DT3S:

Nominal temperature difference Adjustment range: 1.5 … 30.0 K [3.0 … 60.0 °Ra] in steps of 0.5 K [1 °Ra] Factory setting: 10.0 K [20.0 °Ra]

Note:

For pump speed control of the heat exchange pump, the operation mode of relay 2 (MAN2) must be set to Auto.

RIS3:

Rise Adjustment range: 1 … 20 K[2 … 40 °Ra] in steps of 1 K [2 °Ra] Factory setting: 2 K [4 °Ra]

When the switch-on temperature difference is reached, the pump is activated at full speed for 10 seconds. Then, the speed is reduced to the minimum pump speed value (n2MN).

If the temperature difference reaches the adjusted nominal temperature difference (DT3S), the pump speed increases by one step (10 %). If the difference increases by the adjustable rise value, the pump speed increases by 10 % respectively until the maximum pump speed of 100 % is reached. The response of the controller can be adapted via the parameter RIS3.

Note:

The nominal temperature difference must be at least 0.5 K [1 °Ra] higher than the switch-on tempe rature difference.

Minimum pump speed

PUM2

Pump control type R2 Selection: OnOF, PULS, PSOL, PHEA Factory setting: OnOF

With this parameter, the pump control type can be adjusted. The following types can be selected: Adjustment for standard pump without speed control

• OnOF (pump on / pump off)

Adjustment for standard pump with speed control

• PULS (pulse packet control via semiconductor relay)

Adjustment for high-efﬁciency pump (HE pump)

• PSOL (PWM proﬁle for a high-efﬁciency solar pump)

• PHEA (PWM proﬁle for a high-efﬁciency heating pump)

In order to reduce the number of switching processes for high-efﬁciency pumps, the controller is equipped with a relay overrun function that automatically comes into effect when the speed control signal is not issued by the relay itself (PUM = PSOL or PHEA). The corresponding relay will then remain switched on for an hour after the switch-off conditions are fulﬁlled.

WARNING!

Electric shock!

During the overrun time, the relay symbol disappears from the display and the pump is inactive, but the relay is still energised!

Î Switch off power supply and disconnect the device

from power supply before working on the device or the cables connected!

n2MN

Pump speed control Adjustment range: (10) 30 … 100 % in steps of 5 % Factory setting: 30 %

A relative minimum pump speed can be allocated to the output R2 via the adjustment channel n2MN.

Note:

When loads which are not speed-controlled (e. g. valves) are used, the value of the corresponding relay (n1, n2) must be set to 100% or the pump control type must be set to OnOF in order to deactivate pump speed control.

n2MX

Maximum pump speed R2 Adjustment range: (10) 30 … 100 % in steps of: 5 % Factory setting: 100 %

A relative maximum pump speed can be allocated to the output R2 via the adjustment channel n2MX.

Note:

When loads which are not speed-controlled (e. g. valves) are used, the value of the corresponding relay (n1, n2) must be set to 100 % or the pump control type must be set to OnOF in order to deactivate pump speed control.

Maximum temperature limitation

Minimum temperature limitation

MX3O / MX3F:

Maximum temperature limitation Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] in steps of 0.5 °C [1.0 °F] Factory setting: MX3O: 60.0 °C [140.0 °F] MX3F: 58.0 °C [136.0 °F]

Minimum and maximum temperature limits can be set for the heat exchange function.

The maximum temperature limitation uses sensor 4 as reference sensor.

The maximum temperature limitation function provides a maximum tem perature setting, usually to reduce scald risk in a storage store. If MX3O is exceeded, relay 2 is switched off until the temperature at sensor 4 falls below MX3F.

MN3O / MN3F:

Minimum temperature limitation Adjustment range: 0.0 … 90.0 °C [30.0 … 190.0 °F] in steps of 0.5 °C [1.0 °F] Factory setting (Arr = 2 only): MN3O: 5.0 °C [40.0 °F] MN3F: 10.0 °C [50.0 °F]

The minimum temperature limitation uses sensor 3 as reference sensor.

The minimum temperature limitation function provides a minimum tem perature setting for the heat source in system layout 2. If the temperature at sensor 3 falls below MN3O, relay 2 is switched off until the temperature at sensor 3 exceeds MN3F.

Both switch-on and switch-off temperature differences DT3O and DT3F are valid for the maximum and minimum temperature limitation.

System layout 3

PWM 1/2

Sensor S3 is used for a thermostatic function, which operates relay 2 for afterheating or heat dump purposes, when the adjusted thermostat switch-on temperature

(AH O) is reached. This function can optionally be combined with up to three adjustable time frames.

Sensor S3 can also be optionally used as a reference sensor for the thermal disinfection function OTD or the store emergency shutdown option (OSEM).

Sensor S4 can optionally be connected for measurement purposes. If heat quantity measurement (OHQM) is activated, S4 and VFD are to be connected as ﬂow and return sensors respectively.

S4 / VFD / TR

VFD

S4 / VFD / TFL

VBus 9

S3 / TSTT

Display Channels

Channel Description Terminal Page

INIT x* ODB initialisation active - 51 FLL x* ODB ﬁlling time active - 51 STAB x* ODB stabilisation in progress - 51 COL x Temperature collector S1 51 TSTB x Temperature store 1 base S2 51 TSTT x Temperature store 1 at the top S3 51 TDIS s* Thermal disinfection temperature S3 51 S4 x Temperature sensor 4 S4 51 TFL x* Temperature ﬂow sensor S1 / S4 / VFD 51 TR x* Temperature return sensor S4 / VFD 51 VFD x* Temperature Grundfos Direct Sensor™ VFD 51 L/h x* Flow rate Grundfos Direct Sensor™ VFD 52 n1 % x Pump speed R1 R1 52 h P1 x Operating hours R1 R1 54 h P2 x Operating hours R2 R2 54 kWh x* Heat quantity kWh - 52 MWh x* Heat quantity MWh - 52 CDIS s* Countdown of monitoring period - 53

SDIS s* Starting time display - 53 DDIS s* Heating period display - 53 TIME x Time - 53

Adjustment Channels

Channel Description Factory setting Page

Arr x System 3 54 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 54 DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 54 DT S x Nominal temperature difference R1 10.0 K [20.0 °Ra] 54 RIS x Rise control R1 2 K [4 °Ra] 55 PUM1 x Pump control type R1 PSOL 55 n1MX x Maximum pump speed R1 100 % 55 n1MN x Minimum pump speed R1 30 % 55 S MX x Maximum store temperature 60 °C [140 °F] 56

OSEM x Option store emergency shutdown OFF 56

EM x

OCC x Option collector cooling OFF 57 CMX x* Maximum collector temperature 110 °C [230 °F] 57 OSYC x Option system cooling OFF 57 DTCO x* Cooling switch-on temperature difference 20.0 K [40.0 °Ra] 57 DTCF x* Cooling switch-off temperature difference 15.0 K [30.0 °Ra] 57 OSTC x Option store cooling OFF 57 OHOL x* Option holiday cooling OFF 57 THOL x* Holiday cooling temperature 40 °C [110 °F] 59 OCN x Option minimum limitation OFF 59

Emergency temperature collector 130 °C [270 °F] 56 Emergency temperature collector if ODB is activated: 95 °C [200 °F] 56

Adjustment Channels

Channel Description Factory setting Page

CMN x* Minimum collector temperature 10 °C [50 °F] 59 OCF x Option antifreeze OFF 59 CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 59 O TC x Option tube collector OFF 61 TCST x* OTC starting time 07:00 61 TCEN x* OTC ending time 19:00 61 TCRU x* OTC runtime 30 s 61 TCIN x* OTC standstill interval 30 min 61 GFD x Grundfos Direct Sensor™ OFF 61 OHQM x Option heat quantity measurement OFF 63 SEN x* VFD allocation 2 63 FMAX x* Maximum ﬂow 6.0 l/min 63 MEDT x* Antifreeze type 1 63 MED% x* Antifreeze concentration 45 % 63 AH O s Switch-on temp. for thermostat 40 °C [110 °F] 20 AH F s Switch-off temp. for thermostat 45 °C [120 °F] 20 t1 O s Switch-on time 1 thermostat 00:00 20 t1 F s Switch-off time 1 thermostat 00:00 20 t2 O s Switch-on time 2 thermostat 00:00 20 t2 F s Switch-off time 2 thermostat 00:00 20 t3 O s Switch-on time 3 thermostat 00:00 20 t3 F s Switch-off time 3 thermostat 00:00 20 ODB x Drainback option OFF 64 tDTO x* ODB switch-on condition - time period 60 s 64 tFLL x* ODB ﬁlling time 5.0 min 64 tSTB x* ODB stabilisation time 2.0 min 64 OTD s Option thermal disinfection OFF 20 PDIS s* Monitoring period 01:00 20 DDIS s* Heating period 01:00 20 TDIS s* Disinfection temperature 60 °C [140 °F] 21 SDIS s* Starting time 00:00 21 MAN1 x Manual operation R1 Auto 64 MAN2 x Manual operation R2 Auto 64 LANG x Language En 64 UNIT x Temperature unit °C 64 RESE x Reset - back to factory settings 64

######## Version number

Legend:

Symbol Speciﬁcation

x Channel is available

x* Channel is available if the corresponding option is activated.

s Channel is speciﬁcally available in this system layout

s* System-speciﬁc channel, only available if the corresponding option is activated

System-speciﬁc functions

The following functions are exclusively available in system layout 3. The corresponding channels will not be available in any other system layout.

Thermostat function

Afterheating

Use of surplus energy

The thermostat function works independently from the solar operation and can be used for using surplus energy or for afterheating.

• AH O < AH F

thermostat function for afterheating

• AH O > AH F

thermostat function for using surplus energy

The symbol

will be shown on the display if the second relay output is activated.

Reference sensor for the thermostat function is S3!

AH F:

Thermostat switch-off tem p. Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] in steps of 0.5 °C [1.0 °F] Factory setting: 45.0 °C [120.0 °F]

t1 O, t2 O, t3 O:

Thermostat switch-on time Adjustment range: 00:00 … 23:45 Factory setting: 00:00

AH O:

Thermostat switch-on tem p. Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] in steps of 0.5 °C [1.0 °F] Factory setting: 40.0 °C [110.0°F]

t1 F, t2 F, t3 F:

Thermostat switch-off time Adjustment range: 00:00 … 23:45 Factory setting: 00:00

In order to block the thermostat function for a certain period, there are three time frames t1 … t3. If the function should be active between 6:00 and 9:00, set t1 O to 6:00 and t1 F to 9:00.

If all time frames are set to 00:00 o’clock, the thermostat function is continuously activated (factory setting).

Thermal disinfection

OtD:

Thermal disinfection function Adjustment range: ON / OFF Factory setting: OFF

PDIS:

Monitoring period Adjustment range: 0 … 30:0 … 24 h (dd:hh) Factory setting: 01:00

DDIS

Heating period Adjustment range: 00:00 … 23:59 (hh:mm) Factory setting: 01:00

TDIS

Disinfection temperature Adjustment range: 0 … 95 °C in steps of 1 K Factory setting: 60 °C

This function helps to contain the spread of Legionella in DHW stores by systematically activating the afterheating.

Reference sensor for the thermal disinfection function is S3! For thermal disinfection, the temperature at the reference sensor has to be mon-

itored. This protection is ensured when, during the monitoring period, the disinfection temperature is continuously exceeded for the entire disinfection period.

If the thermal disinfection function is activated, the monitoring period starts as soon as the temperature at the reference sensor falls below the disinfection temperature. When the monitoring period ends, the allocated reference relay activates the afterheating. The disinfection period starts to count as soon as the temperature at the reference sensor exceeds the disinfection temperature.

If the temperature at the reference sensor exceeds the disinfection temperature by more than 5 K, the reference relay switches off until the temperature has fallen below a value of 2 K, above the disinfection temperature.

Thermal disinfection can only be completed when the disinfection temperature is exceeded for the duration of the disinfection period without interruption.

If the disinfection conditions have been fulﬁlled by solar loading before the monitoring period ends, thermal disinfection is considered complete and a new monitoring period begins.

Due to the ﬂexible control logic, the exact time of thermal disinfection is not predictable. In order to set a ﬁxed time for the disinfection to be run, the starting delay must be used:

Thermal disinfection with starting delay

SDIS

Starting time Adjustment range: 00:00 … 24:00 (o‘clock) Factory setting: 00:00

If the starting delay option is activated, a starting time for the thermal disinfection with starting delay can be adjusted. The activation of the afterheating is then delayed until that starting time after the monitoring period has ended.

If the monitoring period ends, for example, at 12:00 o‘clock, and the starting time has been set to 18:00, the reference relay will be energised with a delay of 6 hours at 18:00 instead of 12:00 o‘clock.

If, during the waiting time, the disinfection conditions are fulﬁlled by solar loading, thermal disinfection is considered complete and a new monitoring period begins.

System layout 4

PWM 1/2

The controller calculates the temperature differences between collector sensor S1 and store sensors S2 and S3. If the differences are larger than or identical to the adjusted switch-on temperature differences (DT1O / DT2O), the solar pump will be operated by relay 1, and the respective store zone will be loaded until the switchoff temperature differences (DT1F / DT2F) or the maximum store temperatures

(S1MX / S2MX) are reached. The priority logic causes priority loading of the upper zone of the store, if possible. The 3-port valve will be operated by relay 2 then.

If heat quantity measurement (OHQM) is activated, S4 and VFD are to be connected as ﬂow and return sensors respectively.

VFD

VBus

S4 / VFD / TFL

S4 / VFD / TR

Display Channels

Channel Description Terminal Page

COL x Temperature collector S1

TSTB x Temperature store 1 base S2

TSTT x Temperature store 1 at the top S3

S4 x Temperature sensor 4 S4

TFL x* Temperature ﬂow sensor S1 / S4 / VFD

TR x* Temperature return sensor S4 / VFD

VFD x* Temperature Grundfos Direct Sensor™ VFD

L/h x* Flow rate Grundfos Direct Sensor™ VFD

n % x Pump speed relay R1

hP1 x Operating hours R1 R1

hP2 x Operating hours R2 R2

kWh

MWh

TIME x Time -

Heat quantity kWh -

Heat quantity MWh -

51 51 51 51 51 51 51 52 52 54 54 52 52 52

Adjustment Channels

Channel Description Factory setting Page

Arr x System 4

PUM1 x Pump control type R1 PSOL

nMN x Minimum pump speed R1 30 %

nMX x Maximum pump speed R1 100 %

DT1O x Switch-on temperature difference R1 6.0 K [12.0 °Ra]

DT1F x Switch-off temperature difference R1 4.0 K [8.0 °Ra]

DT1S x Nominal temperature difference R1 10.0 K [20.0 °Ra]

RIS1 x Rise control R1 2 K [4 °Ra]

S1 MX x Maximum temperature store 1 60 °C [140 °F]

DT2O x Switch-on temperature difference R2 6.0 K [12.0 °Ra]

DT2F x Switch-off temperature difference R2 4.0 K [8.0 °Ra]

DT2S x Nominal temperature difference R2 10.0 K [20.0 °Ra]

RIS2 x Rise control R2 2 K [4 °Ra]

S2MX x Maximum temperature store 2 60 °C [140 °F]

EM x Emergency temperature collector 130 °C [270 °F]

OCC x Option collector cooling

CMX x* Maximum collector temperature

OSYC x Option system cooling OFF

DTCO x* Cooling switch-on temperature difference

DTCF x* Cooling switch-off temperature difference

OFF 110 °C [230 °F]

20.0 K [40.0 °Ra]

15.0 K [30.0 °Ra]

54 56 56 56 54 54 54 55 56 54 54 54 55 56 56 57 57 57 57 57

Adjustment Channels

Channel Description Factory setting Page

OHQM x Option heat quantity measurement OFF SEN x* VFD allocation 2 FMAX x* Maximum ﬂow 6.0 l/min MEDT x* Antifreeze type 1 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 % MAN1 x Manual operation R1 Auto MAN2 x Manual operation R2 Auto LANG x Language En UNIT x Temperature unit °C RESE x Reset - back to factory settings

######## Version number

57 57 59 59 59 59 59 60 60 60 61 61 61 61 61 61 63 63 63 63 63 64 64 64 64 64

Legend:

Symbol Speciﬁcation

x Channel is available

x* Channel is available if the corresponding option is activated.

s Channel is speciﬁcally available in this system layout

s* System-speciﬁc channel, only available if the corresponding option is activated

System layout 5

PWM 1/2

The controller calculates the temperature differences between collector sensor S1 and store sensors S2 and S3. If the differences are larger than or identical to the adjusted switch-on temperature differences (DT1O / DT2O), the solar pump will be operated by relay 1, and the respective store will be loaded until the switchoff temperature differences (DT1F / DT2F) or the maximum store temperatures

(S1MX / S2MX) are reached. The priority logic causes priority loading of store 1, if possible. For loading store 2 the 3-port valve will be operated by relay 2.

If heat quantity measurement (OHQM) is activated, S4 and VFD are to be connected as ﬂow and return sensors respectively.

S4 / VFD / TR

VFD

VBus

S4 / VFD / TFL

Store 1 Store 2

Display Channels

Channel Description Terminal Page

COL x Temperature collector S1 TST1 x Temperature store 1 base S2 TST2 x Temperature store 2 base S3 S4 x Temperature sensor 4 S4 TFL x* Temperature ﬂow sensor S1 / S4 / VFD

TR x* Temperature return sensor S4 / VFD VFD x* Temperature Grundfos Direct Sensor™ VFD L/h x* Flow rate Grundfos Direct Sensor™ VFD n % x Pump speed relay R1 R1 hP1 x Operating hours R1 R1 hP2 x Operating hours R2 R2 kWh MWh TIME

Adjustment Channels

Channel Description Factory setting Page

Arr x System 5 PUM1 x Pump control type R1 PSOL nMN x Minimum pump speed R1 30 % nMX x Maximum pump speed R1 100 % DT1O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] DT1F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] DT1S x Nominal temperature difference R1 10.0 K [20.0 °Ra] RIS1 x Rise control R1 2 K [4 °Ra] S1 MX x Maximum temperature store 1 60 °C [140 °F] DT2O x Switch-on temperature difference R2 6.0 K [12.0 °Ra] DT2F x Switch-off temperature difference R2 4.0 K [8.0 °Ra] DT2S x Nominal temperature difference R2 10.0 K [20.0 °Ra] RIS2 x Rise control R2 2 K [4 °Ra] S2MX x Maximum temperature store 2 60 °C [140 °F] EM x Emergency temperature collector 130 °C [270 °F] OCC x Option collector cooling CMX x* Maximum collector temperature OSYC x Option system cooling OFF DTCO x* Cooling switch-on temperature difference DTCF x* Cooling switch-off temperature difference

Heat quantity kWh -

Heat quantity MWh -

Time -

OFF 110 °C [230 °F]

20.0 K [40.0 °Ra]

15.0 K [30.0 °Ra]

51 51 51 51 51 51 51 52 52 54 54 52 52 52

54 55 55 55 54 54 54 55 56 54 54 54 55 56 56 57 57 57 57 57

Adjustment Channels

Channel Description Factory setting Page

OSTC x Option store cooling OFF OHOL x* Option holiday cooling OFF THOL x* Holiday cooling temperature 40 °C [110 °F] OCN x Option minimum limitation OFF CMN x* Minimum collector temperature 10 °C [50 °F] OCF x Option antifreeze OFF CFR x* Antifreeze temperature 4.0 °C [40.0 °F] PRIO x Priority 1 tLB x Break time 2 min tRUN x Circulation runtime 15 min O TC x Option tube collector OFF TCST x* OTC starting time 07:00 TCEN x* OTC ending time 19:00 TCRU x* OTC runtime 30 s TCIN x* OTC standstill interval 30 min GFD x Grundfos Direct Sensor™ OFF OHQM x Option heat quantity measurement OFF SEN x* VFD allocation 2 FMAX x* Maximum ﬂow 6.0 l/min MEDT x* Antifreeze type 1 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 % MAN1 x Manual operation R1 Auto MAN2 x Manual operation R2 Auto LANG x Language En UNIT x Temperature unit °C RESE x Reset - back to factory settings

######## Version number

57 57 59 59 59 59 59 60 60 60 61 61 61 61 61 61 63 63 63 63 63 64 64 64 64 64

Legend:

Symbol Speciﬁcation

x Channel is available

x* Channel is available if the corresponding option is activated.

s Channel is speciﬁcally available in this system layout

s* System-speciﬁc channel, only available if the corresponding option is activated

System layout 6

PWM 1/2

The controller calculates the temperature differences between collector sensor S1 and store sensors S2 and S3. If the differences are larger than or identical to the adjusted switch-on temperature differences (DT1O / DT2O), the solar pumps will be operated by relay 1 and / or relay 2, and the respective store will be loaded until the switch-off temperature differences (DT1F / DT2F) or the maximum store temperatures (S1MX / S2MX) are reached. The priority logic causes priority load-

ing of the selected store (PRIO), if possible. Loading both stores simultaneously is possible as well (PRIO = 0).

Sensor S4 can optionally be used as reference sensor for the store emergency shutdown option (OSEM). If heat quantity measurement (OHQM) is activated, S4 and VFD are to be connected as ﬂow and return sensors respectively.

VFD

VBus

S4 / VFD / TFL

S4 / VFD / TR

S4 /

Store 1

TSTT

Store 2

R1 R2

Display Channels

Channel Description Terminal Page

COL x Temperature collector S1 51 TST1 x Temperature store 1 base S2 51 TST2 x Temperature store 2 base S3 51 S4 x Temperature sensor 4 S4 51

TSTT x* Temperature store at the top S4 51

TFL x* Temperature ﬂow sensor S1 / S4 / VFD 51 TR x* Temperature return sensor S4 / VFD 51 VFD x* Temperature Grundfos Direct Sensor™ VFD 51

L/h x* Flow rate Grundfos Direct Sensor™ VFD 52 n1 % x Pump speed R1 R1 52 n2 % x Pump speed R2 R2 52 h P1 x Operating hours R1 R1 54 h P2 x Operating hours R2 R2 kWh x* Heat quantity kWh MWh x* Heat quantity MWh TIME x Time -

54 52 52 52

Adjustment Channels

Channel Description Factory setting Page

Arr x System 6 DT1O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] DT1F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] DT1S x Nominal temperature difference R1 10.0 K [20.0 °Ra] RIS1 x Rise control R1 2 K [4 °Ra] PUM1 x Pump control type R1 PSOL n1MN x Minimum pump speed R1 30 % n1MX x Maximum pump speed R1 100 % S1 MX x Maximum temperature store 1 60 °C [140 °F]

OSEM x Option store emergency shutdown OFF

DT2O x Switch-on temperature difference R2 6.0 K [12.0 °Ra] DT2F x Switch-off temperature difference R2 4.0 K [8.0 °Ra] DT2S x Nominal temperature difference R2 10.0 K [20.0 °Ra] RIS2 x Rise control R2 2 K [4 °Ra] PUM2 x Pump control type R2 OnOF n2MN x* Minimum pump speed R2 30 % n2MX x* Maximum pump speed R2 100 % S2MX x Maximum temperature store 2 60 °C [140 °F] EM x Emergency temperature collector 130 °C [270 °F] OCC x Option collector cooling OFF CMX x* Maximum collector temperature 110 °C [230 °F]

54 54 54 54 55 55 55 55 56 56 54 54 54 55 55 55 55 56 56 57 57

Adjustment Channels

Channel Description Factory setting Page

OSYC x Option system cooling OFF DTCO x* Cooling switch-on temperature difference 20.0 K [40.0 °Ra] DTCF x* Cooling switch-off temperature difference 15.0 K [30.0 °Ra] OSTC x Option store cooling OFF OHOL x* Option holiday cooling OFF THOL x* Holiday cooling temperature 40 °C [110 °F] OCN x Option minimum limitation OFF CMN x* Minimum collector temperature 10 °C [50 °F] OCF x Option antifreeze OFF CFR x* Antifreeze temperature 4.0 °C [40.0 °F] PRIO x Priority 1 tLB x Break time 2 min tRUN x Circulation runtime 15 min DTSE x* Spread temperature difference 40 K [70 °Ra] O TC x Option tube collector OFF TCST x* OTC starting time 07:00 TCEN x* OTC ending time 19:00

TCRU x* OTC runtime 30 s TCIN x* OTC standstill interval 30 min GFD x Grundfos Direct Sensor™ OFF OHQM x Option heat quantity measurement OFF SEN x* VFD allocation 2 MEDT x* Antifreeze type 1 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 % MAN1 x Manual operation R1 Auto MAN2 x Manual operation R2 Auto LANG x Language En UNIT x Temperature unit °C RESE x Reset - back to factory settings

######## Version number

57 57 57 57 57 59 59 59 59 59 60 60 60 60 61 61 61 61 61 61 63 63 63 63 64 64 64 64 64

Legend:

Symbol Speciﬁcation

x Channel is available

x* Channel is available if the corresponding option is activated.

s Channel is speciﬁcally available in this system layout

s* System-speciﬁc channel, only available if the corresponding option is activated

System layout 7

PWM 1/2

The controller calculates the temperature differences between the collector sensors S1 and S3 and the store sensor S2. If the differences are larger than or identical to the adjusted switch-on temperature difference (DT O), the respective solar pump will be operated by relay 1 and / or relay 2, and the store will be loaded until the switch-off temperature difference (DT F) or the maximum store temperature (S MX) is reached.

R1 R2

VFD

S4 / VFD / TFL

S4 / VFD / TR

S4 / TSTT

VBus

Display Channels

Channel Description Terminal Page

COL1 x Temperature collector 1 S1 TST x Temperature store S2 COL2 x Temperature collector 2 S3 S4 x Temperature sensor 4 S4

TSTT x* Temperature store at the top S4

TFL x* Temperatur Vorlaufsensor S4 / VFD TR x* Temperatur Rücklaufsensor S4 / VFD VFD x* Temperatur Grundfos Direct Sensor™ VFD L/h x* Volumenstrom Grundfos Direct Sensor™ VFD n1 % x Pump speed R1 R1 n2 % x Pump speed R2 R2 h P1 x Operating hours R1 R1 h P2 x Operating hours R2 R2 kWh x* Heat quantity kWh MWh x* Heat quantity MWh -

TIME x Time -

Adjustment Channels

Channel Description Factory setting Page

Arr x System 7 DT O x Switch-on temperature difference R1 / R2 6.0 K [12.0 °Ra] DT F x Switch-off temperature difference R1 / R2 4.0 K [8.0 °Ra] DT S x Nominal temperature difference R1 / R2 10.0 K [20.0 °Ra] RIS x Rise control R1 / R2 2 K [4 °Ra] PUM1 x Pump control type R1 PSOL n1MN x Minimum pump speed R1 30 % n1MX x Maximum pump speed R1 100 % S MX x Maximum store temperature 60 °C [140 °F]

OSEM x Option store emergency shutdown OFF

PUM2 x Pump control type R2 OnOF n2MN x* Minimum pump speed R2 30 % n2MX x* Maximum pump speed R2 100 % EM1 x Emergency temperature collector 130 °C [270 °F] EM2 x Emergency temperature collector 130 °C [270 °F] OCC1 x Option collector cooling collector 1 CMX1 x* Maximum temperature collector 1 OCC2 x Option collector cooling collector 2 OFF

OFF 110 °C [230 °F]

51 51 51 51 51 51 51 51 52 52 54 54 54 52 52 52

54 54 54 54 55 55 55 55 56 56 55 55 55 56 56 57 57 57

Adjustment Channels

Channel Description Factory setting Page

CMX2 x* Maximum temperature collector 2 110 °C [230 °F] OSYC x Option system cooling OFF DTCO x* Cooling switch-on temperature difference DTCF x* Cooling switch-off temperature difference OSTC x Option store cooling OFF OHOL x* Option holiday cooling OFF THOL x* Holiday cooling temperature 40 °C [110 °F] OCN1 x Option minimum limitation collector 1 OFF CMN1 x* Minimum temperature collector 1 10 °C [50 °F] OCN2 x Option minimum limitation collector 2 OFF CMN2 x* Minium temperature collector 2 10 °C [50 °F] OCF1 x Option antifreeze collector 1 OFF CFR1 x* Antifreeze temperature collector 1 4.0 °C [40.0 °F] OCF2 x Option antifreeze collector 2 OFF CFR2 x* Antifreeze temperature collector 2 4.0 °C [40.0 °F] O TC x Option tube collector OFF TCST x* OTC starting time 07:00 TCEN x* OTC ending time 19:00 TCRU x* OTC runtime 30 s TCIN x* OTC standstill interval 30 min GFD x Grundfos Direct Sensor™ OFF OHQM x Option heat quantity measurement OFF SEN x* VFD allocation 2 MEDT x* Antifreeze type 1 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 % MAN1 x Manual operation R1 Auto MAN2 x Manual operation R2 Auto LANG x Language En UNIT x Temperature unit °C RESE x Reset - back to factory settings

######## Version number

20.0 K [40.0 °Ra]

15.0 K [30.0 °Ra]

57 57 57 57 57 57 59 59 59 59 59 59 59 59 59 61 61 61 61 61 61 63 63 63 63 64 64 64 64 64

Legend:

Symbol Speciﬁcation

x Channel is available

x* Channel is available if the corresponding option is activated.

s Channel is speciﬁcally available in this system layout

s* System-speciﬁc channel, only available if the corresponding option is activated

System layout 8

PWM 1/2

A solid fuel boiler will be operated by relay 2, if the temperature difference between sensors S4 and S3 is larger than or identical to the adjusted switch-on tem-

perature difference (DT3O), until the adjusted minimum (MN3O) and maximum (MX3O) temperature thresholds of the fuel boiler and the store are reached. S3 can optionally be used as reference sensor for the store emergency shutdown option (OSEM).

If heat quantity measurement (OHQM) is activated, S4 and VFD are to be connected as ﬂow and return sensors respectively.

VFD

VBus

S3 / TSTT

VFD / TR

Display Channels

Channel Description Terminal Page

INIT x* ODB initialisation active - 51 FLL x* ODB ﬁlling time active - 51

STAB x* ODB stabilisation in progress - 51 COL x Temperature collector S1 51 TSTB x Temperature store 1 base S2 51 TSTT x Temperature store 1 at the top S3 51 TFL x* Temperature ﬂow sensor S1 51 TR x* Temperature return sensor VFD 51 VFD x* Temperature Grundfos Direct Sensor™ VFD 51 L/h x* Flow rate Grundfos Direct Sensor™ VFD 52 TSFB x Temperature solid fuel boiler S4 51 n1 % x Pump speed R1 R1 52 n2 % x Pump speed R2 R2 52 h P1 x Operating hours R1 R1 54 h P2 x Operating hours R2 R2 54 kWh x* Heat quantity kWh - 52 MWh x* Heat quantity MWh - 52 TIME x Time - 52

Adjustment Channels

Channel Description Factory setting Page

Arr x System 8 54 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] 54 DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] 54 DT S x Nominal temperature difference R1 10.0 K [20.0 °Ra] 54 RIS x Rise control R1 2 K [4 °Ra] 55 PUM1 x Pump control type R1 PSOL 55 n1MN x Minimum pump speed R1 30 % 55 n1MX x Maximum pump speed R1 100 % 55 S MX x Maximum store temperature 60 °C [140 °F] 56

OSEM x Option store emergency shutdown OFF 56

PUM2 x Pump control type R2 OnOF 55 n2MN x* Minimum pump speed R2 30 % 55 n2MX x* Maximum pump speed R2 100 % 55

EM x

Emergency temperature collector 130 °C [270 °F] 56 Emergency temperature collector if ODB is activated: 95 °C [200 °F] 56

Adjustment Channels

Channel Description Factory setting Page

OSTC x Option store cooling OFF 57 OHOL x* Option holiday cooling OFF 57 THOL x* Holiday cooling temperature 40 °C [110 °F] 59 OCN x Option minimum limitation OFF 59 CMN x* Minimum collector temperature 10 °C [50 °F] 59 OCF x Option antifreeze OFF 59 CFR x* Antifreeze temperature 4.0 °C [40.0 °F] 59 O TC x Option tube collector OFF 61 TCST x* OTC starting time 07:00 61 TCEN x* OTC ending time 19:00 61 TCRU x* OTC runtime 30 s 61 TCIN x* OTC standstill interval 30 min 61 GFD x Grundfos Direct Sensor™ OFF 61 OHQM x Option heat quantity measurement OFF 63 MEDT x* Antifreeze type 1 63 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 % 63 DT3O s Switch-on temperature difference R2 6.0 K [12.0 °Ra] 54

DT3F s Switch-off temperature difference R2 4.0 K [8.0 °Ra] 54 DT3S s Nominal temperature difference R2 10.0 K [20.0 °Ra] 54 RIS3 s Rise control R2 2 K [4 °Ra] 55 MX3O s Switch-on treshold for maximum temperature 60.0 °C [140.0 °F] 39 MX3F s Switch-off treshold for maximum temperature 58.0 °C [136.0 °F] 39 MN3O s Switch-on treshold for minimum temperature 60.0 °C [140.0 °F] 39 MN3F s Switch-off treshold for minimum temperature 65.0 °C [150.0 °F] 39 ODB x Drainback option OFF 64 tDTO x* ODB switch-on condition - time period 60 s 64 tFLL x* ODB ﬁlling time 5.0 min 64 tSTB x* ODB stabilisation time 2.0 min 64 MAN1 x Manual operation R1 Auto 64 MAN2 x Manual operation R2 Auto 64 LANG x Language En 64 UNIT x Temperature unit °C 64 RESE x Reset - back to factory settings 64

######## Version number

Legend:

Symbol Speciﬁcation

x Channel is available

x* Channel is available if the corresponding option is activated.

s Channel is speciﬁcally available in this system layout

s* System-speciﬁc channel, only available if the corresponding option is activated

System-speciﬁc functions

The following adjustments are used for the speciﬁc functions in system layout 8.

∆T control for afterheating by solid fuel boiler

DT3O:

Switch-on temperature diff. Adjustment range: 1.0 … 20.0 K [2.0 … 40.0 °Ra] in steps of 0.5 K [1 °Ra] Factory setting: 6.0 K [12.0 °Ra]

Reference sensors for this function are S4 and S3.

In system layout 8, the controller is equipped with an additional differential control for heat exchange from a solid fuel boiler (e.g. woodstove). The basic differential function is adjusted using the switch-on (DT3O) and switch-off (DT3F) temperature differences.

When the switch-on difference is reached, relay 2 switches on. When the temperature difference falls below the adjusted switch-off temperature difference, relay 2 switches off.

DT3F:

Switch-off temperature diff. Adjustment range: 0.5 … 19.5 K [1.0 … 39.0 °Ra] in steps of 0.5 K [1 °Ra] Factory setting: 4.0 K [8.0 °Ra]

Note:

The switch-on temperature difference must be at least 0.5 K [1 °Ra] higher than the switch-off tempe rature difference.

Pump speed control

DT3S:

Nominal temperature difference Adjustment range: 1.5 … 30.0 K [3.0 … 60.0 °Ra] in steps of 0.5 K [1 °Ra] Factory setting: 10.0 K [20.0 °Ra]

Note:

For pump speed control of the solid fuel boiler pump, the operation mode of relay 2 (MAN2) must be set to Auto.

RIS3:

Rise Adjustment range: 1 … 20 K [2 … 40 °Ra] in steps of 1 K [2 °Ra] Factory setting: 2 K [4 °Ra]

Note:

The nominal temperature difference must be at least 0.5 K [1 °Ra] higher than the switch-on tempe rature difference.

When the switch-on temperature difference is reached, the pump is activated at full speed for 10 seconds. Then, the speed is reduced to the minimum pump speed value (n2MN).

Minimum pump speed

PUM2

Pump control type R2 Selection: OnOF, PULS, PSOL, PHEA Factory setting: OnOF

With this parameter, the pump control type can be adjusted.

The following types can be selected:

Adjustment for standard pump without speed control

• OnOF (pump on / pump off)

Adjustment for standard pump with speed control

• PULS (pulse packet control via semiconductor relay)

Adjustment for high efﬁciency pump (HE pump)

• PSOL (PWM proﬁle for a high-efﬁciency solar pump)

• PHEA (PWM proﬁle for a high-efﬁciency heating pump)

WARNING!

Electric shock!

During the overrun time, the relay symbol disappears from the display and the pump is inactive, but the relay is still energised!

Î Switch off power supply and disconnect the device

from power supply before

n2MN:

Minimum pump speed R2 Adjustment range: (10) 30 … 100 % in steps of 5 % Factory setting: 30 %

A relative minimum pump speed can be allocated to the output R2 via the adjustment channel n2MN.

Note:

When loads which are not speed-controlled (e. g. valves) are used, the value of the corresponding relay (n1, n2) must be set to 100 % or the pump control type must be set to OnOF in order to deactivate pump speed control.

Maximaldrehzahl

n2MX

Maximum pump speed R2 Adjustment range: (10) 30 … 100 % in steps of: 5 % Factory setting: 100 %

A relative maximum pump speed can be allocated to the output R2 via the adjustment channel n2MX.

Note:

When loads which are not speed-controlled (e. g. valves) are used, the value of the corresponding relay (n1, n2) must be set to 100 % or the pump control type must be set to OnOF in order to deactivate pump speed control.

Maximum temperature limitation

Minimum temperature limitation

MX3O / MX3F:

Maximum temperature limitation Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F] in steps of 0.5 °C [1 °F] Factory setting: MX3O: 60.0 °C [140.0 °F] MX3F: 58.0 °C [136.0 °F]

Minimum and maximum temperature limits can be set for the solid fuel boiler. The maximum temperature limitation function provides a maximum tem perature

setting, usually to reduce scald risk in a storage store. If MX3O is exceeded, relay 2 is switched off until the sensor falls below MX3F. TIn Arr 8, this function uses sensor 3 as reference sensor.

MN3O / MN3F:

Minimum temperature limitation Adjustment range: 0.0 … 90.0 °C [30.0 … 190.0 °F] in steps of 0.5 °C [1 °F] Factory setting (Arr = 8 only): MN3O: 60.0 °C [140.0 °F] MN3F: 65.0 °C [150.0 °F]

The minimum temperature limitation uses sensor 4 as reference sensor. The minimum temperature limitation function provides a minimum tem perature

setting for the solid fuel boiler in system layout 8. If the temperature at sensor 4 falls below MN3O, relay 2 is switched off until the temperature exceeds MN3F again.

Both switch-on and switch-off temperature differences DT3O and DT3F are valid for the maximum and minimum temperature limitation.

System layout 9

PWM 1/2

A heating circuit return preheating will be operated by relay 2, if the temperature difference between sensors S3 and S4 is larger than or identical to the adjusted switch-on temperature difference (DT3O). For this purpose, relay 2 will operate the 3-port valve. S3 can optionally be used as reference sensor for the store emergency shutdown option (OSEM). If heat quantity measurement (OHQM) is activated, S1 and VFD are to be connected as ﬂow and return sensors respectively.

VFD

VBus

S3 / TSTT

VFD / TR

Display Channels Channel Description Terminal Page INIT FLL STAB COL x Temperature collector S1 TSTB x Temperature store 1 base S2 TSTT x Temperature store 1 at the top S3

TFL x* Temperature ﬂow sensor S1 TR x* Temperature return sensor VFD VFD x* Temperature Grundfos Direct Sensor™ VFD L/h x* Flow rate Grundfos Direct Sensor™ VFD

TRET x Temperature heating circuit S4 n % x Pump speed relay R1 R1 hP1 x Operating hours R1 R1 hP2 x Operating hours R2 R2

kWh x* Heat quantity kWh - MWh x* Heat quantity MWh -

TIME x Time -

Adjustment Channels Channel Description Factory setting Page

Arr x System 9 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] DT S x Nominal temperature difference R1 10.0 K [20.0 °Ra] RIS x Rise control R1 2 K [4 °Ra]

PUM1 x Pump control type R1 PSOL

nMN x Minimum pump speed R1 30 %

nMX x Maximum pump speed R1 100 %

S MX x Maximum store temperature 60 °C [140 °F] OSEM x Option store emergency shutdown OFF 56

EM x

OCC x Option collector cooling CMX x* Maximum collector temperature OSYC x Option system cooling OFF DTCO x* Cooling switch-on temperature difference

ODB initialisation active -

ODB ﬁlling time active -

ODB stabilisation in progress -

Emergency temperature collector 130 °C [270 °F] Emergency temperature collector if ODB is activated: 95 °C [200 °F]

OFF 110 °C [230 °F]

20.0 K [40.0 °Ra]

51 51 51 51 51 51 51 51 51 52 51 52 54 54 52 52 52

54 54 54 54 55 55 55 55 56

56 56 57 57 57 57

Adjustment Channels Channel Description Factory setting Page

DTCF x* Cooling switch-off temperature difference

OSTC x Option store cooling OFF

OHOL x* Option holiday cooling OFF

THOL x* Holiday cooling temperature 40 °C [110 °F]

OCN x Option minimum limitation OFF

CMN x* Minimum collector temperature 10 °C [50 °F]

OCF x Option antifreeze OFF

CFR x* Antifreeze temperature 4.0 °C [40.0 °F]

O TC x Option tube collector OFF

TCST x* OTC starting time 07:00

TCEN x* OTC ending time 19:00

TCRU x* OTC runtime 30 s

TCIN x* OTC standstill interval 30 min

GFD x Grundfos Direct Sensor™ OFF

OHQM x Option heat quantity measurement OFF

MEDT x* Antifreeze type 1

MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 %

DT3O s Switch-on temperature difference R2

DT3F s Switch-off temperature difference R2

ODB x Drainback option OFF

tDTO x* ODB switch-on condition - time period 60 s

tFLL x* ODB ﬁlling time 5.0 min

tSTB x* ODB stabilisation time 2.0 min

MAN1 x Manual operation R1 Auto

MAN2 x Manual operation R2 Auto

LANG x Language En

UNIT x Temperature unit °C

RESE x Reset - back to factory settings

######## Version number

15.0 K [30.0 °Ra]

6.0 K [12.0 °Ra]

4.0 K [8.0 °Ra]

57 57 57 59 59 59 59 59 61 61 61 61 61 61 63 63 63 54 54 64 64 64 64 64 64 64 64 64

Legend:

Symbol Speciﬁcation

x Channel is available

x* Channel is available if the corresponding option is activated.

s Channel is speciﬁcally available in this system layout

s* System-speciﬁc channel, only available if the corresponding option is activated

System layout 10

PWM 1/2

If the maximum collector temperature (CMX) is reached, the solar pump will be operated by relay 1 and the 3-port valve will be operated by relay 2 in order to direct the surplus energy to a heat dump. For security purpose this will be carried

out only if the store temperature is below the non-adjustable emergency shutdown of 95 °C [200 °F].

Sensors S3 and S4 can optionally be connected for measurement purposes. S3 can optionally be used as reference sensor for the store emergency shutdown option (OSEM).

If heat quantity measurement (OHQM) is activated, S4 and VFD are to be connected as ﬂow and return sensors respectively.

S4 / VFD / TR

VFD

S4 / VFD / TFL

VBus

S3 / TSTT

Display Channels Channel Description Terminal Page

COL x Temperature collector S1

TST x Temperature store S2

S3 x Temperature sensor 3 S3

TSTT x Temperature store at the top S3

TFL x* Temperature ﬂow sensor S1 / S4 / VFD

S4 x Temperature sensor 4 S4

VFD x* Temperature Grundfos Direct Sensor™ VFD L/h x* Flow rate Grundfos Direct Sensor™ VFD

TR n % x Pump speed relay R1 R1 h P1 x Operating hours R1 R1 h P2 x Operating hours R2 R2 kWh x* Heat quantity kWh MWh x* Heat quantity MWh TIME x Time -

Adjustment Channels Channel Description Factory setting Page

Arr x System 10 DT O x Switch-on temperature difference R1 6.0 K [12.0 °Ra] DT F x Switch-off temperature difference R1 4.0 K [8.0 °Ra] DT S x Nominal temperature difference R1 10.0 K [20.0 °Ra] RIS x Rise control R1 2 K [4 °Ra]

PUM1 x Pump control type R1 PSOL

nMN x Minimum pump speed R1 30 %

nMX x Maximum pump speed R1 100 %

S MX x Maximum store temperature 60 °C [140 °F] OSEM x Option store emergency shutdown OFF 56 EM x Emergency temperature collector 130 °C [270 °F] CMX s Maximum collector temperature OCN x Option minimum limitation OFF CMN x* Minimum collector temperature 10 °C [50 °F] OCF x Option antifreeze OFF CFR x* Antifreeze temperature 4.0 °C [40.0 °F] O TC x Option tube collector OFF TCST x* OTC starting time 07:00 TCEN x* OTC ending time 19:00

Temperature return sensor S4 / VFD

110 °C [230 °F]

51 51 51 51 51 51 51 52 51 52 54 54 52 52 52

54 54 54 54 55 55 55 55 56

56 57 59 59 59 59 61 61 61

Adjustment Channels Channel Description Factory setting Page TCRU x* OTC runtime 30 s TCIN x* OTC standstill interval 30 min

GFD x Grundfos Direct Sensor™ OFF

OHQM x Option heat quantity measurement OFF

SEN x* VFD allocation 2

FMAX x* Maximum ﬂow 6.0 l/min MEDT x* Antifreeze type 1 MED% x* Antifreeze concentration (only if MEDT = propylene or ethylene) 45 % MAN1 x Manual operation R1 Auto MAN2 x Manual operation R2 Auto LANG x Language En UNIT x Temperature unit °C RESE x Reset - back to factory settings ######## Version number

61 61 61 63 63 63 63 63 64 64 64 64 64

Legend:

Symbol Speciﬁcation

x Channel is available

x* Channel is available if the corresponding option is activated.

s Channel is speciﬁcally available in this system layout

s* System-speciﬁc channel, only available if the corresponding option is activated

2 Operation and function



2.1 Push buttons

The System-Monitoring-Display consists of three blocks: channel display, tool bar and system screen.

forward (+)

SET (selection / ad-

justment mode)

backward (-)

The controller is operated via three push buttons below the display.

Button 1 is used for scrolling forward through the indication menu or to increase the adjustment values. Button 2 is used for scrolling backward and reducing values. Button 3 is used for selecting channels and conﬁrming adjustments.

During normal operation, only the display channels are shown.

Î Scroll through the display channels by pressing buttons 1 and 2

Accessing the adjustment channels:

Î Scroll down in the display menu and press button 1 for approx. two seconds

after you have reached the last display item.

When an adjustment value is shown on the display,

is indicated to the right

of the channel name.

Î Press button 3 in order to access the adjustment mode

starts ﬂashing. Î Adjust the value using buttons 1 and 2 Î Brieﬂy press button 3, permanently appears,the adjusted value will be saved.

2.2 System-Monitoring-Display



System-Monitoring-Display



channel display The system monitoring display consists of three blocks: channel display, tool bar and system screen (active system layout). The channel display consists of two lines. The upper line is an alpha-numeric 16-segment display (text display) for displaying channel names and menu items. In the lower 7-segment display, the channel values and the adjustment parameters are displayed. Temperatures are either indicated in °C or °F, whereas temperature differences are indicated in K or °Ra respectively.

tool bar The additional symbols of the tool bar indicate the current system status.

Status standard ﬂashing

relay 1 active relay 2 active maximum store temperature exceeded

store emergency shutdown active

collector emergency shutdown active

collector cooling active

system cooling active

store cooling active

holiday cooling function activated

holiday cooling function active collector minimum limitation active

antifreeze function activated antifreeze function active manual operation relay 1 ON

manual operation relay 2 ON

manual operation relay 1 / 2 OFF

sensor defective

System screen

system screen

The system screen (active system layout) shows the system selected on the controller. It consists of several system component symbols, which are – depending on the current status of the system – either ﬂashing, permanently shown or hidden.

2.3 Flashing codes

System screen ﬂashing codes

• Pumps are ﬂashing when the corresponding relay is switched on

• Sensor symbols are ﬂashing if the corresponding sensor display channel is selected

• Sensors are ﬂashing quickly in the case of a sensor fault

• Burner symbol is ﬂashing if the afterheating is active

collector 1

valve

pumps

sensors

store heat exchanger

collector 2

store sensor at the top

store

store 2 or afterheating (with an additional symbol)

store sensor base

heating circuit

heating circuit return sensor

valve

sensor

additional symbol for operation of the burner

afterheating with burner symbol

Collectors

with collector sensor

Stores 1 and 2 with heat exchanger

3-port valve

the ﬂow direction or the current switching position is shown

Temperature sensor

Heating circuit

Pump

Afterheating

with burner symbol

3 Commissioning

forward (+)

SET (selection /

adjustment mode)

The commissioning menu consists of the following 8 channels:

backward (-)

The three push buttons of the CS Plus controller

Î Establish the power supply The controller runs an initialisation phase. When the controller is commissioned for the ﬁrst time or after a reset, it will run

a commissioning menu. The commissioning menu leads the user through the most important adjustment channels needed for operating the system.

Operating the commissioning menu:

Î Enter the channel by pressing button 3

The

symbol ﬂashes.

Î Adjust the value by pressing buttons 1 and 2

Î Save the adjustment by pressing button 3 again

The

symbol stops ﬂashing.

Î Press button 1 or 2 to switch to the next or previous channel

LANG

Language selection Selection: dE, En, Fr, ES, It Factory setting: En

1. Language

Î Adjust the desired menu language in this channel

• dE : German

• En : English

• Fr : French

• ES : Spanish

• It : Italian

UNIT

Temperature unit selection Selection: °C, °F Factory setting: °C

2. Unit

Î Adjust the unit in which temperatures and temperature differences shall be

displayed

TIME

Real time adjustment

3. Time

Î Adjust the current time for the real time clock The hours and minutes have to be adjusted separately, ﬁrst the hours, then the minutes.

Arr

System layout selection Adjustment range: 1 … 10 Factory setting: 1

4. System layout

Î Adjust the desired system layout of your solar thermal system

For a detailed description of the different system layouts selectable, see chapter

1.4.

Overview of system layouts:

Arr 1 Arr 2

Arr 1 : standard solar system layout Arr 2 : solar system layout with heat exchange

If the system layout selection is changed later on, any previous adjustments which

have been made in the other channels will be lost. Therefore, changing the system

layout is always followed by a security enquiry.

Only conﬁrm the security enquiry if you are sure that you wish to

change the system layout selection!

Security enquiry:

Î To conﬁrm the security enquiry, press button 3

Arr 3 Arr 4

Arr 5 Arr 6

Arr 7 Arr 8

Arr 9 Arr 10

Arr 3 : solar system layout with afterheating Arr 4 : solar system layout with vertical store charging

Arr 5 : 2-store solar system layout with valve logic Arr 6 : 2-store solar system layout with pump logic

Arr 7 : solar system layout with 2 collectors and 1 store Arr 8 : solar system layout with afterheating by solid

fuel boiler

Arr 9 : solar system layout with heating circuit return

preheating

Arr 10: standard solar system layout with heat dump

S MX / S1MX / S2MX

Maximum store temp. Adjustment range: 4 … 95 °C [40 … 200 °F] Arr 10: 4 … 90 °C [40 … 190 °F] in steps of 1 °C [2 °F] Factory setting: 60 °C [140 °F]

5. Maximum store temperature

Î Adjust the desired maximum store temperature

Note: The controller is also equipped with a non-adjustable emergency shutdown function, which will shut the system down if the store reaches 95 °C

[200 °F].

PUM1 / PUM2

Pump control type Selection: OnOF, PULS, PSOL, PHEA Factory setting: PSOL

6. Pump control type

Î Adjust the pump control type. The following types can be selected: Adjustment for standard pump without speed control

• OnOF (pump on / pump off) Adjustment for standard pump with speed control

• PULS (pulse packet control via semiconductor relay) Adjustment for high efﬁciency pump (HE pump)

• PSOL (PWM proﬁle for a high-efﬁciency solar pump)

• PHEA (PWM proﬁle for a high-efﬁciency heating pump)

WARNING!

Electric shock!

During the overrun time, the relay symbol disappears from the display and the pump is inactive, but the relay is still energised!

Î Switch off power supply and disconnect the device

from power supply before

nMN, n1MN, n2MN

Minimum pump speed Adjustment range: (10) 30 … 100 % in steps of 5 % Factory setting: 30 %

7. Minimum pump speed

Î Adjust a minimum speed for the pump

Note:

If loads which are not speed-controlled (e.g. valves) are used, the value must be set to 100 % for the respective relay.

nMX, n1MX, n2MX

Maximum pump speed

Adjustment range: (10) 30 … 100 %

in steps of: 5 %

Factory setting: 100 %

8. Maximum pump speed

Î Adjust the maximum pump speed for the corresponding pumps.

Note:

Conﬁrmation enquiry

Completing the commissioning menu

After the last channel of the commissioning menu has been adjusted and con-

ﬁrmed, the controller asks for conﬁrmation of the adjustments.

Î To conﬁrm the adjustments made in the commissioning menu, press button 3

Now the controller is ready for operation with typical settings to suit the selected

system layout.

The settings made in the commissioning menu can be changed later on in the cor-

responding adjustment channels. Additional functions and options can of course be

individually adjusted as well (see chap. 4.2).

4 Channel overview

4.1 Display channels

Note:

The displayed values and adjustment channels depend on which system layout, which options and functions have been selected. Only values and adjustment channels available for the individual settings selected will appear in the menu.

Indication of drainback time periods Initialisation

INIT

ODB initialisation active Indicates the time adjusted in tDTO, running backwards.

Filling time

FLL

ODB ﬁlling time active Indicates the time adjusted in tFLL, running backwards.

Stabilisation

STAB

Stabilisation Indicates the time adjusted in tSTB, running backwards.

Indication of collector temperatures

COL, COL1, COL2

Collector temperature Display range: -40 … +260 °C [-40 … +500 °F] Indicates the current collector temperatures.

• COL : collector temperature (1-collector system)

• COL1 : collector temperature 1

• COL2 : collector temperature 2

Indication of store temperatures

TST, TSTB, TSTT, TST1, TST2, TDIS

Store temperatures Display range: -40 … +260 °C [-40 … +500 °F] Indicates the current store temperature.

• TST : store temperature (1-store system)

• TSTB : store temperature base

• TSTT : store temperature top

• TST1 : temperature store 1 (2-store-systems)

• TST2 : temperature store 2 (2-store-systems)

• TDIS : thermal disinfection temperature (Arr = 3 only; replaces TSTT if, during thermal disinfection, the heating period DDIS is active)

Indication of sensors 3, 4 and VFD

Indicates the current temperature of the corresponding additional sensor (without control function).

• S3 : temperature at sensor 3

• S4 : temperature at sensor 4

• VFD : temperature at the Grundfos Direct Sensor™

Note:

S3 and S4 will only be indicated if the temperature sensors are connected. VFD will be indicated only if a Grundfos Direct Sensor™ has been connected and registered.

Indication of other temperatures

TSFB, TRET, TFL, TR

Other mea sured tempe ratures Display range: -40 … +260 °C [-40 … +500 °F]

Indicates the current temperature of the corresponding sensor.

• TSFB : temperature solid fuel boiler

• TRET : temperature heating return preheating

• TFL : temperature ﬂow

• TR : temperature return

Note:

TFL / TR will be indicated only if the heat quantity measurement option (OHQM) has been activated.

Indication of ﬂow rate

S3, S4, VFD

Sensor temperatures Display range: -40 … +260 °C [-40 … +500 °F] VFD: 0 … 100 %

l/h

Flow rate Display range: depends on the sensor type Indicates the current ﬂow rate at the VFD ﬂow rate sensor.

The display range depends on the sensor type selected.

Indication of current pump speed

n %, n1 %, n2 %

Current pump speed

Display range: 30 … 100 %

Indicates the current pump speed of the corresponding pump.

• n % : current pump speed (1-pump system)

• n1 % : current pump speed pump 1

• n2 % : current pump speed pump 2

kWh / MWh

Heat quantity in kWh / MWh

Display channel

Indicates the energy gained in heat quantity – only available if heat quantity meas-

urement (OHQM) is activated.

The ﬂow rate as well as the reference sensors S1 (ﬂow) and S4 (return) are used

for calculating the heat quantity supplied. It is shown in kWh in the channel kWh

and in MWh in the channel MWh. The overall heat quantity results from the sum

of both values.

The accumulated heat quantity can be set back to 0. As soon as one of the display

channels of the heat quantity is selected, the

on the display.

Î Press button 3 for 2 s in order to access the RESET mode of the counter.

The display symbol

Î Conﬁrm the reset with button 3 in order to ﬁnish the reset.

In order to interrupt the RESET-process, do not press a button for about 5 s. The

display returns to the display mode.

will ﬂash and the heat quantity value will be set to 0.

symbol is permanently shown

CDIS

Countdown of monitoring period Display range: 0 … 30:0 … 24 (dd:hh) If the thermal disinfection option (OTD ) is activated and the monitoring period is in progress, the remaining monitoring time will be displayed as CDIS (in days and hours) and counted backwards.

SDIS

Starting time display Display range: 00:00 … 24:00 (hh:mm) If the thermal disinfection option (OTD ) is activated and a starting delay time has been adjusted, the adjusted delay time is displayed (ﬂashing) in this channel.

DDIS

Heating period display Display range: 00:00 … 24:00 (hh:mm) If the thermal disinfection option (OTD ) is activated and the heating period is in progress, the remaining time of the heating period is displayed (in hours and minutes) in this channel, counting backwards.

4.2 Adjustment channels

System layout selection

TIME

Indicates the current time.

Î Press button 3 for 2 s to adjust the hours

Î Set the hours by pressing buttons 1 and 2

Î Press button 3 again to adjust the minutes

Î Set the minutes by pressing buttons 1 and 2

Î Press button 3 in order to save the adjustments

Operating hours counter

h P / h P1 / h P2

Operating hours counter Display channel The operating hours counter accumulates the solar operating hours of the respective relay (h P / h P1 / h P2). Full hours are displayed.

The accumulated operating hours can be set back to zero. As soon as one operating hours channel is selected, the symbol

Î In order to access the RESET-mode of the counter, press button 3 for approx.

two seconds.

The display symbol

Î Conﬁrm the reset with button 3 in order to ﬁnish the reset. In order to interrupt the RESET-process, do not press a button for about 5 s. The

display returns to the display mode.

will ﬂash and the operating hours will be set to 0.

is displayed.

Arr

System layout selection. Adjustment range: 1 … 10 Factory setting: 1

In this channel, a pre-deﬁned system layout can be selected. Each system layout has a set of pre-programmed settings that can be individually changed.

If the system layout selection is changed later on, all adjustments made in the other channels will be lost. Therefore, changing the system layout is always followed by a security enquiry.

Only conﬁrm the security enquiry if you are sure that you wish to change the system layout selection!

Security enquiry:

Î To conﬁrm the security enquiry, press button 3

∆T control

DT O / DT1O / DT2O / DT3O

Switch-on temperature diff. Adjustment range: 1.0 … 20.0 K [2.0 … 40.0 °Ra] in steps of 0.5 K [1 °Ra] Factory setting: 6.0 K [12.0 °Ra]

The controller works as a standard differential controller. If the switch-on difference is reached, the pump is activated. When the temperature difference falls below the adjusted switch-off temperature difference, the respective relay switches off.

Note:

The switch-on temperature difference must be at least 0.5 K [1 °Ra] higher than the switch-off temperature difference.

DT F / DT1F / DT2F / DT3F

Switch-off temperature diff.

Adjustment range: 0.5 … 19.5 K [1.0 … 39.0 °Ra]

in steps of 0.5 K [1 °Ra]

Factory setting: 4.0 K [8.0 °Ra]

Note:

When the drainback option ODB is activated, the temperature differences DT O, DT F and DT S are set to a ﬁxed adjustment: DT O = 10 K [20 °Ra] DT F = 4 K [8 °Ra] DT S = 15 K [30 °Ra] Previous adjustments made in these channels will be overridden and may have to be entered again if ODB is deactivated later on.

Pump speed control

DT S / DT1S / DT2S / DT3S

Nominal temperature difference

Adjustment range: 1.5 … 30.0 K [3.0 … 60.0 °Ra]

in steps of 0.5 K [1 °Ra]

Factory setting: 10.0 K [20.0 °Ra]

RIS / RIS1 / RIS2 / RIS3

Rise Adjustment range: 1 … 20 K [2 … 40 °Ra] in steps of 1 K [2 °Ra] Factory setting: 2 K [4 °Ra]

Note:

For pump speed control, the operation mode of the corresponding relay must be set to Auto (adjustment channel MAN1 / MAN2)

When the switch-on temperature difference is reached, the pump is activated at full speed for 10 seconds. Then, the speed is reduced to the minimum pump speed value (factory setting = 30 %).

If the temperature difference reaches the adjusted nominal temperature difference, the pump speed increases by one step (10 %). If the difference increases by the adjustable rise value, the pump speed increases by 10 % respectively until the maximum pump speed of 100 % is reached. The response of the controller can be adapted via the parameter “Rise”.

Note:

The nominal temperature difference must be at least 0.5 K [1 °Ra] higher than the switch-on tempe rature difference.

PUM1 / PUM2

Pump control type Selection: OnOF, PULS, PSOL, PHEA Factory setting: PSOL

With this parameter, the pump control type can be adjusted. The following types can be selected: Adjustment for standard pump without speed control

• OnOF (pump on / pump off)

Adjustment for standard pump with speed control

• PULS (pulse packet control via semiconductor relay) Adjustment for high efﬁciency pump (HE pump)

• PSOL (PWM proﬁle for a high-efﬁciency solar pump)

• PHEA (PWM proﬁle for a high-efﬁciency heating pump)

WARNING!

Electric shock!

During the overrun time, the relay symbol disappears from the display and the pump is inactive, but the relay is still energised!

Î Switch off power supply and disconnect the device

from power supply before

Minimum pump speed

nMX,n1MX, n2MX

Maximum pump speed Adjustment range: (10) 30 … 100 % in steps of: 5 % Factory setting: 100 %

A relative maximum pump speed can be allocated to the outputs R1 and R2 via the adjustment channel n1(2)MX.

Note:

Maximum store temperature

nMN, n1MN, n2MN:

Minimum pump speed Adjustment range: (10) 30 … 100 % in steps of 5 % Factory setting: 30 % A relative minimum pump speed can be allocated to the outputs R1 and R2 via the adjustment channels nMN, n1MN and n2MN.

Note:

When loads which are not speed-controlled (e.g. valves) are used, the value must be set to 100 % in order to deactivate pump speed control.

S MX / S1MX / S2MX

Maximum store temp. Adjustment range: 4 … 95 °C [40 … 200 °F] Arr 10: 4 … 90 °C [40 … 190 °F] in steps of 1 °C [2 °F] Factory setting: 60 °C [140 °F] Once the adjusted maximum temperature is exceeded, the solar pump is switched off and further loading of the store is prevented to reduce scald risk or system damage. A ﬁxed hysteresis of 2 K [4 °Ra] is set for the maximum store temperature. When the temperature at the corresponding sensor exceeds the adjusted maximum store temperature, the symbol is shown on the display.

Note: If the collector cooling or the system cooling function is activated, the adjusted store temperature may be overridden. In order to prevent system damage, the controller is also equipped with an integrated store emergency shutdown if the store reaches 95 °C [200 °F].

Store emergency shutdown option

OSEM

Store emergency shutdown option

Adjustment range: OFF / ON

Factory setting: OFF

This option is used for activating the integrated store emergency shutdown for

an upper store sensor. If the temperature at the reference sensor exceeds 95 °C,

store 1 will be blocked and loading will be stopped until the temperature falls

below 90 °C.

Note:

Sensor S3 ist used as the reference sensor in the system layouts 1, 2, 3, 8, 9 and

10. In the system layouts 6 and 7, sensor S4 is used as the reference sensor. This option is not available in system layouts 4 and 5, in the system layouts 6 and 7 it will only be available if heat quantity measurement is deactivated.

Collector temperature limitation

Emergency shutdown of the collector

EM / EM1 / EM2

Collector temperature limitation

Adjustment range: 80 … 200 °C [170 … 390 °F]

in steps of 1 °C [2 °F]

Factory setting: 130 °C [270 °F]

If the adjusted collector emergency shutdown temperature (EM / EM1 / EM2) is

exceeded, the controller switches off the solar pump (R1 / R2) in order to protect

the system against overheating (collector emergency shutdown). A hysteresis of

10 K [20 °Ra] is set for the collector temperature limitation. While the collector is

in emergency shutdown,

(ﬂashing) is shown on the display.

Note:

If the drainback option ODB is activated, the adjustment range of EM is changed to 80 … 120 °C [170 … 250 °F]. The factory setting in that case is 95 °C [200 °F].

WARNING!

Danger of injury and system damage through pressure surges!

If water is used as a heat transfer medium in a pressure-less system, the water will start boiling at 100 °C [212 °F].

Î If a pressure-less drainback system is used with water

as a heat transfer medium, do not adjust the collector temperature limitation EM to more than 95 °C [200 °F]!

Cooling functions

In the following the three cooling functions – collector cooling, system cooling and store cooling – are described in detail. The following notes are valid for all three cooling functions:

Note:

The cooling functions will not become active as long as solar loading is possible.

Note:

In 2-store-systems, the cooling functions will only affect store 1, respectively the base area of the store (such as in Arr = 4).

Collector cooling function

OCC / OCC1 / OCC2

Option collector cooling Adjustment range: OFF / ON Factory setting: OFF

CMX / CMX1 / CMX2

Maximum collector temp. Adjustment range: 70 … 160 °C [150 … 320 °F] in steps of 1 °C [1 °F] Factory setting: 110 °C [230 °F]

When the collector cooling function is activated, the controller aims to keep the collector at an operational temperature.

When the adjusted maximum store temperature is reached, solar loading stops. If the collector temperature increases to the adjusted maximum collector temperature, the solar pump is activated until the collector temperature falls at least 5 K [10 °Ra] below the maximum collector temperature. The store temperature may increase (subordinate active maximum store temperature), but only up to 95 °C [200°F] (emergency shutdown of the store).

If the collector cooling function is active, display.

Note:

This function will only be available if the system cooling function (OSYC) is deactivated.

Note:

In system layout 10, the parameter CMX is available without the OCC function. In system layout 10, CMX is used to set the activation temperature for the heat dump function. No other switch-on condition is needed in that case.

System cooling function

and (ﬂashing) is shown on the

DTCO

Switch-on temperature diff. Adjustment range: 1.0 … 30.0 K [2.0 … 60.0 °Ra] in steps of 0.5 K [1 °Ra] Factory setting: 20.0 K [40.0 °Ra]

When the system cooling function is activated, the controller aims to keep the solar system operational for a longer time. The function overrides the maximum store temperature to provide thermal relief of the collector ﬁeld and the heat transfer ﬂuid on hot days. If the store temperature is higher than the maximum store temperature (S MX / S1MX) and the switch-on temperature difference DTCO is reached, the solar system remains activated. Solar loading is continued until either the store temperature reaches 95 °C [200 °F] (emergency shutdown of the store), the temperature difference falls below the adjusted value DTCF or the collector emergency shutdown temperature EM is reached. If the system cooling function is active, and (ﬂashing) is shown on the display.

DTCF

Switch-off temperature diff. Adjustment range: 0.5 … 29.5 K [1.0 … 59.0 °Ra] in steps of 0.5 K [1 °Ra] Factory setting: 15.0 K [30.0 °Ra]

Note:

This function will only be available if the collector cooling function (OCC) is deactivated.

OSYC

Option system cooling Adjustment range: OFF / ON Factory setting: OFF

Store cooling function

OSTC

Store cooling option

Adjustment range: OFF / ON

Factory setting: OFF

If no DHW consumption is expected for a longer period of time, the additional holiday cooling option OHOL can be activated in order to extend the store cooling function. The adjustable temperature THOL then replaces the maximum store temperature (S MX / S1MX) as a switch-off temperature for the store cooling function.

When the holiday cooling function is activated, on the display.

While the holiday cooling function is active, on the display.

Collector minimum limitation option

and (ﬂashing) are shown

, and (ﬂashing) are shown

OHOL

Holiday cooling option

Adjustment range: OFF / ON

Factory setting: OFF

THOL

Holiday cooling temperature

Adjustment range: 20 … 80 °C [70 … 175 °F]

in steps of 1 °C [1 °F]

Factory setting: 40 °C [110 °F]

When the store cooling function is activated, the controller aims to cool down the

store during the night in order to prepare it for solar loading on the following day.

If the adjusted maximum store temperature (S MX / S1MX) is exceeded and

the collector temperature falls below the store temperature, the system will

be reactivated in order to cool down the store. Cooling will continue until the

store temperature has fallen below the adjusted maximum store temperature

(S MX / S1MX) again. A ﬁxed hysteresis of 2 K [4 °Ra] is set for this function.

Reference threshold temperature differences for the store cooling function are

DT O and DT F.

OCN / OCN1 / OCN2

Collector minimum limitation Adjustment range: OFF / ON Factory setting: OFF

CMN / CMN1 / CMN2

Collector minimum temp. Adjustment range: 10.0 … 90.0 °C [50.0 … 190.0 °F] in steps of 0.5 °C [1.0 °F] Factory setting: 10.0 °C [50.0 °F]

If the collector minimum limitation option is activated, the pump (R1 / R2) is only switched on if the adjustable collector minimum temperature is exceeded. The minimum temperature prevents the pump from being switched on too often at low collector temperatures. A ﬁxed hysteresis of 5 K [10 °Ra] is set for this function

If the collector minimum limitation is active,

Note:

If OSTC or OCF is active, the collector minimum function will be overridden. In that case, the collector temperature may fall below CMN.

(ﬂashing) is shown on the display.

OCF / OCF1 / OCF2

Antifreeze function Adjustment range: OFF / ON Factory setting: OFF

CFR / CFR1 / CFR2

Antifreeze temperature Adjustment range: -40.0 … +10.0 °C [-40.0 … +50.0 °F] in steps of 0.5 °C [1 °F]

Factory setting: 4.0 °C [40.0 °F] The antifreeze function activates the loading circuit between the collector and

the store when the temperature falls below the adjusted antifreeze temperature. This will protect the ﬂuid against freezing or coagulating. If the adjusted antifreeze temperature is exceeded by 1 K [2 °Ra], the loading circuit will be deactivated.

When the antifreeze function is activated,

is shown on the display. If the anti-

freeze function is active, and (ﬂashing) are shown on the display.

Note:

Since this function uses the limited heat quantity of the store, the antifreeze function should be used in regions with few days of temperatures around the freezing point. The antifreeze function will be suppressed if the store temperature falls below 5 °C [40 °F] in order to protect the store from frost damage.

The DeltaSol

CS Plus priority logic

Note:

Priority logic can be used in multi-store system layouts only (Arr = 4, 5, 6).

PRIO

Loading priority Adjustment range: SE 1, SE 2, Su 1, Su 2, 0, 1, 2 Factory setting: Arr 4: 2; Arr 5, 6: 1 If a multi-store system layout has been chosen, the priority logic determines how the heat is divided between the stores. Different types of priority logic are adjustable:

• spreaded loading (SE 1 and SE 2)

• successive loading (Su 1 and Su 2)

• parallel loading (0)

• store sequence control (1 and 2) If priority SE 1 or SE 2 (only available in Arr 6) is adjusted, the subordinate store will be loaded in parallel if the temperature difference between the collector and the priority store (store 1 for SE 1, store 2 for SE 2) exceeds the adjusted value DTSE and the subordinate store has not reached its maximum temperature. Parallel loading will stop as soon as the temperature difference between the collector and the priority store falls 2 K [4 °Ra] below DTSE or the subordinate store reaches its maximum temperature. If priority Su 1 or Su 2 is adjusted, the stores are loaded successively. The subor- dinate store will only be loaded if the priority store (store 1 for Su 1, store 2 for Su 2) has reached its adjusted maximum temperature (S1MX or S2MX). If priority 0 is adjusted and the switch-on conditions are fulﬁlled for both stores, the stores are loaded in parallel (Arr 6), resp. in an oscillating loading (Arr 4, 5) beginning with the store with the lowest temperature. In an oscillating loading, solar loading will switch from one store to the other in steps of 5 K [10 °Ra] temperature difference between the stores. If priority 1 / 2 is adjusted, store sequence control will be activated (see below) with the corresponding store as priority store.

Note:

If the priority is set to Su 1 or Su 2, solar loading of the subordinate store will be aborted at once if the temperature in the priority store (store 1 for Su 1, store 2 for Su 2) falls below the adjusted maximum temperature. If, in that case, the temperature difference between the priority store and the collector is not sufﬁciently high, solar loading will be stopped completely.

Spreaded loading temperature difference

(only available if PRIO is set to SE 1 or SE 2)

DTSE

Spread temperature difference

Adjustment range: 20 … 90 K [40 … 160 °Ra]

in steps of 1 K [1 °Ra]

Factory setting: 40 K [70 °Ra]

Store sequence control

(only available if priority is set to SE 1, SE 2, 1 or 2)

tLB

Loading break time

Adjustment range: 1 … 30 min

Factory setting: 2 min

tRUN

Loading runtime

Adjustment range: 1 … 30 min

Factory setting: 15 min

Store sequence control will be activated when PRIO is set to SE 1, SE 2, 1 or 2.

If the priority store cannot be loaded, the subordinate store is checked. If useful

heat can be added, it will be loaded for the “loading runtime time” (tRUN - factory

setting 15 min.) After this, the loading process stops and the controller monitors

the increase in collector temperature during the loading break time tLB. If it in-

creases by 2 K [4° Ra], the break time timer starts again to allow the collector

to gain more heat. If the collector temperature does not increase sufﬁciently, the

subordinate store will be loaded again for the tRUN time as before.

As soon as the switch-on condition of the priority store is fulﬁlled, it will be loaded. If the switch-on condition of the priority store is not fulﬁlled, loading of the second store will be continued. If the priority store reaches its maximum temperature, sequence controlled loading will not be carried out.

If store sequence control is active and the system switches to load the priority store, the parameter tLB also acts as a stabilisation timer, during which the switchoff condition DT F is ignored while the system operation stabilises.

Tube collector function

O TC

Tube collector function Adjustment range: OFF / ON Factory setting: OFF

TCST

Tube collector function starting time Adjustment range: 00:00 … 23:45 in steps of 00:15 Factory setting: 07:00

This function helps overcome the disadvantages caused by the non-ideal sensor position with some tube collectors.

This function operates within an adjusted time frame (beginning at TCST and ending at TCEN). It activates the collector circuit pump for an adjustable runtime (TCRU) between adjustable standstill intervals (TCIN) in order to compensate for the delayed temperature measurement.

If the runtime TCRU is set to more than ten seconds, the pump will be run at 100 % for the ﬁrst ten seconds of the runtime. For the remaining runtime, the pump will be run at the adjusted minimum speed nMN.

If the collector sensor is defective or the collector is blocked, this function is suppressed or switched off.

TCEN

Tube collector function ending time Adjustment range: 00:00 … 23:45 in steps of 00:15 Factory setting: 19:00

WARNING!

Danger of injury and system damage through pressure surges!

If a drainback system is ﬁlled due to the tube collector function and the heat transfer medium enters very hot collectors, pressure surges can occur.

Î If a pressure-less drainback system is used, TCST and

TCEN must be adjusted such that the system will not be ﬁlled during times of potentially strong irradiation!

Grundfos Direct Sensor™ registration

TCRU

Tube collector function runtime Adjustment range: 5 … 500 s in steps of 5 s Factory setting: 30 s

TCIN

Tube collector function standstill interval Adjustment range: 1 … 60 min in steps of 1 min Factory setting: 30 min

In system layout 7 (Arr = 7) both collectors are operated independently from each other by means of this function. If the store is being loaded by one collector, the other one is nevertheless operated after the adjusted standstill time.

Note:

If the drainback option ODB is activated, TCRU will not be available. In that case, the runtime is determined by the parameters tFLL and tSTB.

GFD

Grundfos Direct Sensor™ registration Selection: OFF, 12, 40, 40F Factory setting: OFF Registration of a digital ﬂow rate sensor which can be used for heat quantity measurement. OFF : no Grundfos Direct Sensor™ 12 : VFD 1 - 12 (water / glycol mixture) 40 : VFD 2 - 40

40F : VFD 2 - 40 Fast (water only)

Heat quantity measurement

OHQM

Heat quantity measurement Adjustment range: OFF / ON Factory setting: OFF If OHQM is activated, the heat quantity gained can be calculated and displayed. Heat quantity measurement can be run in 2 different ways (see below): with a ﬁxed ﬂow rate value or with a VFD Grundfos Direct Sensor™.

Î Activate the heat quantity measurement option in the OHQM channel Î Select the ﬂow rate detection type in the SEN channel

Heat quantity measurement with a ﬁxed ﬂow rate value

Heat quantity measurement is possible on Arr. 1, 3, 4, 5 and 10 if a ﬂowmeter is

used. To enable heat quantity measurement, proceed as follows:

Î Read the ﬂow rate (l/min) from the ﬂowmeter at maximum pump speed and

adjust it in the FMAX channel.

Î Adjust the heat transfer ﬂuid and the concentration of the antifreeze in the

channels MEDT and MED%.

FMAX

Flow rate in l/min

Adjustment range: 0.5 … 100.0

in steps of 0.5

Factory setting: 6.0

Note:

The FMAX channel will be available only if the SEN channel has been set to OFF.

Heat quantity measurement with a VFD Grundfos Direct Sensor™

Heat quantity measurement with a VFD Grundfos Direct Sensor™ is possible in

all system layouts.

In order to use a VFD Grundfos Direct Sensor™ for heat quantity measurement,

proceed as follows:

Î Register the VFD Grundfos Direct Sensor™ in the GFD channel. Î Adjust the position of the VFD Grundfos Direct Sensor™ in the SEN channel. Î Adjust the type and ratio of the heat transfer ﬂuid in the channels MEDT and

MED%.

SEN

Digital ﬂow rate sensor (only if SEN = 1 or 2) Selection: OFF, 1, 2 Factory setting: 2

Flow rate detection type:

OFF : ﬁxed ﬂow rate value (ﬂowmeter) 1 : Grundfos Direct Sensor™ in the ﬂow pipe 2 : Grundfos Direct Sensor™ in the return pipe

Sensor allocation for heat quantity measurement:

SEN 1 2 OFF

Arr SFL SRET SFL SRET SFL SRET

1 GFD S4 S4 GFD S1 S4 2 --- --- S1 GFD --- --3 GFD S4 S4 GFD S1 S4 4 GFD S4 S4 GFD S1 S4 5 GFD S4 S4 GFD S1 S4 6 GFD S4 S4 GFD --- --7 GFD S4 S4 GFD --- --8 --- --- S1 GFD --- --9 --- --- S1 GFD --- ---

10 GFD S4 S4 GFD S1 S4

MEDT

Heat transfer ﬂuid Adjustment range: 0 … 3 Factory setting: 1

Heat transfer ﬂuid:

0 : Water 1 : Propylene glycol 2 : Ethylene glycol 3 : Tyfocor

LS / G-LS

MED%

Antifreeze ratio in Vol-% (MED% is hidden when MEDT 0 or 3 is used.) Adjustment range: 20 … 70 % in steps of 1 % Factory setting: 45 %

Note:

If the system layout 10 has been selected and OHQM is activated, heat quantity measurement will be interrupted when the 3-port valve switches to the heat dump. Heat quantity measurement with a VFD Grundfos Direct Sensor™ will continue independently.

Drainback option

Note:

A drainback system layout requires additional components such as a holding tank. The drainback option should only be activated if all components required are properly installed.

Note:

The drainback option is only available in system layouts with one store and one collector (Arr 1, 2, 3, 8 and 9).

A drainback system permits the heat transfer ﬂuid to drain back into the holding tank when solar energy is not collected. The drainback option will initiate the ﬁlling of the system when solar loading begins.

If the drainback option ODB is activated, the pump will operate at 100 % speed for the adjusted ﬁlling time tFLL in order to ﬁll the system with ﬂuid from the holding tank. After tFLL, pump speed will go down to the adjusted minimum pump speed nMn. The switch-off conditions will then be ignored for the stabilisation time tSTB in order to avoid the system from shutting down prematurely.

If the function is activated, the menu items described in the following (tDTO,

tFLL and tSTB) have to be adjusted:

ODB

Drainback option Adjustment range: OFF / ON Factory setting: OFF

Note: When the drainback option ODB is activated, the cooling functions OCC, OSYC and OSTC as well as the antifreeze function OCF are

not available. If OCC, OSYC, OSTC or OCF have already been activated before, they will be deactivated again as soon as ODB is activated. They will remain deactivated, even if ODB is deactivated later on.

Note: When the drainback option ODB is activated, the temperature differences DT O, DT F and DT S as well as the minimum speed values nMN / n1MN

are set to a ﬁxed adjustment. Additionally, the adjustment range and the factory setting of the collector emergency shutdown temperature EM changes (see the corresponding channel descriptions for further information). Previous adjustments made in these channels will be overridden and have to be entered again if ODB is deactivated later on.

Time period - switch-on conditions

tDTO

Time period - switch-on conditions Adjustment range: 1 … 100 s in steps of 1 s Factory setting: 60 s The parameter tDTO is used for adjusting the time period during which the switch-on condition DT O must be permanentely fulﬁlled.

Filling time

Operating mode

tFLL

Filling time

Adjustment range: 1.0 … 30.0 min

in steps of 0.5 min

Factory setting: 5.0 min

The ﬁlling time can be adjusted using the parameter tFLL. During this period, the

pump runs at 100 % speed.

Stabilisation

tSTB

Stabilisation

Adjustment range: 1.0 … 15.0 min

in steps of 0.5 min

Factory setting: 2.0 min

The parameter tSTB is used for adjusting the time period during which the

switch-off condition DT F will be ignored after the ﬁlling time has ended.

Booster function option

OBST

Booster function

Adjustment range: ON / OFF

Factory setting: OFF

This function is used for switching on a second pump when ﬁlling the solar system.

When solar loading starts, R2 is energised in parallel to R1. After the ﬁlling time

(tFLL) has ended, R2 is switched off.

Note: The booster function is available in system layout 1 (Arr = 1) only. The booster function will only be available if the drainback option has been activated.

MAN1 / MAN2

Operating mode Adjustment range: OFF, Auto, ON Factory setting: Auto

For control and service work, the operating mode of the controller can be manually adjusted. For this purpose, select the adjustment value MAN1, MAN2 in which the following adjustments can be made:

• MAN1 / MAN2

Operating mode OFF : relay off

Auto : relay in automatic operation ON : relay on

Note: Always adjust the operating mode back to “Auto” when the control and service work is completed. Normal operation is not possible in manual mode.

Language

LANG

Language selection Selection: dE, En, Fr, ES, It Factory setting: En The menu language can be adjusted in this channel.

• dE : German

• En : English

• Fr : French

• ES : Spanish

• It : Italian

(ﬂashing) +

(ﬂashing) + + /

Unit

UNIT

Temperature unit selection Selection: °C, °F Factory setting: °C In this adjustment channel, the display unit for temperatures and temperature differences can be chosen. The unit can be switched between °C / K and °F / °Ra during operation. Temperatures and temperature differences in °F and °Ra are displayed without units. If the indication is set to °C, the units are displayed with the values.

Reset

RESE

Reset function By using the reset function, all adjustments will be set back to the factory settings.

Î To initiate a reset, press button 3 Any previous adjustments will be lost. Therefore, initiating the reset function is

always followed by a security enquiry. Only conﬁrm the security enquiry if you are sure that you wish to reset all adjustments to the factory settings!

Security enquiry

Î To conﬁrm the security enquiry, press button 3

Note: Whenever a reset has been completed, the controller runs the commissioning menu again (see chap. 3).

5 Troubleshooting

1 (1) A 240 V~ 1 (1) A 240 V~

R1 R2

2019

171615

14131212

NR2

IP 20

T2A

100 ... 240 V~

50-60 Hz

Temp. Sensor Pt1000

S2S1 S3 S4 VBus

PWM 1/2

VFD

Made in Germany

DeltaSol

CS Plus

345678910

fuse

On the display the symbols and appear.

Sensor defect. An error code instead of a temperature is displayed

in the sensor display channel.

- 88.8888.8

VBus

load terminalssensor terminals ground terminals

In the case of an error, a message is shown on the display of the controller:

Warning symbols

power supply

terminals

Cable broken. Check cable.

Short circuit. Check cable.

Disconnected Pt1000 temperature sensors can be checked with an ohmmeter. In the following table, the resistance values with the corresponding temperatures are shown.

°C °F Ω °C °F Ω

-10 14 961 55 131 1213

-5 23 980 60 140 1232

0 32 1000 65 149 1252

5 41 1019 70 158 1271

10 50 1039 75 167 1290

15 59 1058 80 176 1309

20 68 1078 85 185 1328

25 77 1097 90 194 1347

30 86 1117 95 203 1366

35 95 1136 100 212 1385

40 104 1155 105 221 1404

45 113 1175 110 230 1423

50 122 1194 115 239 1442

Resistance values of the Pt1000 sensors

Display off.

Pump starts up very late

Check the power supply. Is it disconnected?

The fuse of the controller could be blown. It can be replaced after the front cover has been removed (spare fuse is enclosed in the accessory bag).

5.1 Various

Pump is overheated, but no heat transfer from the collector to the store, ﬂow

and return have the same temperature; perhaps also air / gas bubbles in the lines.

Air in the system?

no yes

Is the collector circuit blocked at

the dirt trap?

Pump starts for a short moment, switches off, switches on again, etc.

Temperature difference at the con-

troller too small?

no yes

Wrong position of collector sen-

sors?

Plausibility control of the option

tube collector special function

yes

Check the supply line and recon-

nect it.

Air in the system; in crease the system pressure to at least static primary pres sure plus 7. 25 psi (0.5 bar); if necessary continue to increase pressure; switch the pump off and on for a short time.

Clean the dirt trap

Change ∆Ton and ∆Toff corre-

spondingly. Problem solved?

Mount the collector sensor at so-

lar ﬂow (warmest collector output); use sensor well of the respective collector.

yes

Switch-on temperature difference

∆Ton to large?

no yes

Non-ideal position of the collector sensor (e.g. ﬂatscrew sensor instead of sensor in sensor wells)?

Minimum temperature limitation

active

The temperature difference between store and collector increases enormously during operation; the collector circuit cannot dissipate the heat.

Collector circuit pump defective?

no yes

Heat exchanger calciﬁed?

Heat exchanger blocked?

o.k.no

Heat exchanger too small?

yes

yesno

yes

Change ∆Ton and ∆Toff corre-

spondingly.

Activate tube collector function if

necessary.

o.k.

Check / replace it

Decalcify it

Clean it

Replace with correctly sized one.

Stores cool down at night

Collector circuit pump runs during

the night?

no yes

Collector temperature is at night

higher than the outdoor temperature

no yes

Sufﬁcient store insulation?

yes no

Insulation close enough to the store?

yes no

Are the store connections insulated?

yes no

Warm water outﬂow upwards?

no yes

Does the warm water circulation

run for a very long time?

no yes

Circulation pump and blocking valve should be switched off for one night; less store losses?

yes no

a b

Check controller: Manual operation active? Tube collector function active? Store cooling or antifreeze function active?

Check the check valve in the ﬂow and the return pipe with regard to the functional efﬁciency.

Increase insulation.

Replace insulation or increase it.

Insulate the connections.

Change connection and let the water ﬂow hori zontally or through a siphon (downwards); less store losses now ?

no yes

Use the circulation pump with timer and switch-off thermostat (energy efﬁcient circulation).

Check whether the pumps of the afterheating circuit run at night; check whether the non-return valve is defective; problem solved ?

o.k.

a b

Control the non-return valve in

warm water circulation - o.k.

yes no

The thermosiphoning in the circulation line is too strong; insert a stronger valve in the non-return valve or an electrical 2-port valve behind the circulation pump; the 2-port valve is

The solar circuit pump does not work, although the collector is considerably warmer than the store.

Is the display working?

yes no

Does the pump start up in manual

operation?

Is the pump current enabled by the

controller?

Are the controller fuses o.k. ?

no yes

Replace fuses.

yes

Further pumps which are connected to the solar store must also be checked.

Clean or replace it

open when the pump is activated, otherwise it is closed; connect pump and 2-port valve electrically in parallel; activate the circulation again

There is no current; check fuses / replace them and check power supply.

The adjusted temperature difference for starting the pump is to high; choose a value which makes more sense.

Is the pump stuck?

yes

Turn the pump shaft using a screwdriver; now passable?

Pump is defective - replace it

Controller might be defective - replace it or contact the distributor.

6 Accessories

Sensors

Our product range includes high-precision platinum temperature sensors, ﬂatscrew sensors, outdoor temperature sensors, indoor temperature sensors, cylindrical clip-on sensors, also as complete sensors with immersion sleeve.

For more information, see our catalogue and price list.

Overvoltage protection device

In order to avoid overvoltage damage at collector sensors (e.g. caused by local lightning storms), we recommend the overvoltage protection RESOL SP10.

VFD Grundfos Direct Sensors™

The VFD Grundfos Direct Sensor™ is a digital sensor that measures both temperature and ﬂow rate.

Smart Display SD3

The RESOL Smart Display is designed for simple connection to RESOL controllers with RESOL VBus

. It is used for visualizing data issued by the controller: collector temperature, storage temperature and energy yield of the solar thermal system. The use of high-efﬁcient LEDs and ﬁlter glass assures a high optical brilliance and good readability even in poor visibility conditions and from a larger distance. An additional power supply is not required.

Large Display GA3

The RESOL Large Display GA3 is designed for simple connection to RESOL controllers via the RESOL VBus

. It is used for visualizing the data issued by the controller: collector and store temperature as well as heat quantity produced in the solar system.

The use of high-efﬁcient LEDs and antireﬂective ﬁlter glass assures a high optical brilliance and good readability - even in poor lighting conditions and at a larger distance.

DL3 Datalogger

Be it solar thermal, heating or DHW heat exchange controllers – with the DL3 you can easily and conveniently log system data of up to 6 RESOL controllers. Get a comprehensive overview of all controllers connected with the large full graphic display. Transfer data with an SD memory card or use the LAN interface to view and process data on your PC.

DL2 Datalogger

This additional module enables the acquisition and storage of large amounts of data (such as measuring and balance values of the solar system) over a long period of time. The DL2 can be conﬁgured and read-out with a standard internet browser via its integrated web interface. For transmission of the data stored in the internal memory of the DL2 to a PC, an SD card can be used. The DL2 is appropriate for all controllers with RESOL VBus®. It can be connected directly to a PC or router for remote access and thus enables comfortable system monitoring for yield monitoring or for diagnostics of faults.

VBus® / LAN interface adapter

The VBus

/ LAN interface adapter is designed for the direct connection of the controller to a PC network or router. It enables easy access to the controller via the local network of the owner. Thus, controller access and data charting can be effected from every workstation of the network. A full version of the RESOL ServiceCenter software is included.

AM1 Alarm module

The AM1 alarm module is designed to signal system failures. It is to be connected to the VBus

of the controller and issues an optical signal via a red LED if a failure has occurred. The AM1 also has a potential-free relay output, which can e. g. be connected to a building management system (BMS). Thus, a collective error message can be issued in the case of a system failure.

VBus® / USB interface adapter

The new VBus

/ USB interface adapter is the interface between the controller and a personal computer. With its standard mini-USB port it enables a fast transmission of system data via the VBus® for processing, visualizing and archiving. A full version of the RESOL ServiceCenter software is included.

Distributed by:

RESOL – Elektronische Regelungen GmbH

Heiskampstraße 10 45527 Hattingen / Germany

Tel.: +49 (0) 23 24 / 96 48 - 0 Fax: +49 (0) 23 24 / 96 48 - 755

www.resol.com info@resol.com

Important note

The texts and drawings of this manual are correct to the best of our knowledge. As faults can never be excluded, please note:

Your own calculations and plans, under consideration of the current standards and directions should only be basis for your projects. We do not offer a guarantee for the completeness of the drawings and texts of this manual - they only represent some examples. They can only be used at your own risk. No liability is assumed for incorrect, incomplete or false information and / or the resulting damages.

Note

The design and the speciﬁcations can be changed without notice. The illustrations may differ from the original product.

Imprint

This mounting- and operation manual including all parts is copyrighted. Another use outside the copyright requires the approval of RESOL – Elektronische Regelungen GmbH. This especially applies for copies, translations, micro ﬁlms and the storage into electronic systems.

Editor: RESOL – Elektronische Regelungen GmbH

Resol DeltaSol CS Plus User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Installation

1.1 Mounting

1.2 Electrical connection

1.3 VFD Grundfos Direct Sensor™

1.4 PWM outputs

1.5 Data communication / Bus

1.6 Terminal allocation in the different system layouts

2 Operation and function

2.1 Push buttons

2.2 System-Monitoring-Display

2.3 Flashing codes

3 Commissioning

4 Channel overview

4.1 Display channels

4.2 Adjustment channels

5 Troubleshooting

5.1 Various

6 Accessories