Resol FlowSol D Guide

FlowSol A
www.resol.de
Handbuch
RESOL FlowSol D / D HE
Installation
Operation
Commissioning
Thank you for buying this RESOL product.
Please read this manual carefully to get the best performance from this unit.
FlowSol D / D HE
www.resol.de
Manual
B
*48004031* 48004031

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
|2
Table of contents
Safety instructions.................................................... 3
1. Pump station with integrated controller......... 3
2. Mounting the station.......................................... 5
3. Commissioning ................................................... 6
3.1 Flushing and filling the solar thermal system .......6
3.2 Emptying the solar thermal system........................8
4. AirStopp .............................................................. 8
5. Digital sensors..................................................... 9
6. Connection.......................................................... 9
7. Accessories for the station................................ 9
8. Integrated controller DeltaSol®D / D HE... 10
9. Installation......................................................... 11
10. Sensor and relay allocation ............................. 11
Description of symbols
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.
Information about the product
Proper usage
The solar controller is designed for use in standard 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 direc-
tives and is therefore labelled with the CE mark.
The Declaration of Conformity is available upon
request, please contact RESOL.
Note
Notes are indicated with an information
symbol.
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.
ÎArrows indicate instruction steps that should be carried
out.
WARNING! Warnings are indicated with a
warning triangle!
They contain information on how
to avoid the danger described.
Safety advice
Please pay attention to:
- safety advice in order to avoid danger and damage to
people and property.
- 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 manufacturer.
Note
Strong electromagnetic fields can impair the
function of the controller.
ÎMake sure the controller as well as the
system are not exposed to strong electro-
magnetic fields.
11. Operation and function ................................... 11
11.1 Adjustment keys...................................................... 11
11.2 Menu structure........................................................ 12
11.3 Operation ................................................................ 14
11.4 User code ................................................................. 14
12. Display mode .................................................... 15
12.1 Status, measurement values and balance values15
12.2 Balance values .......................................................... 16
13. Functions and options...................................... 16
14. Messages............................................................ 19
15. Electrical connection........................................ 21
Imprint .................................................................... 24

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
3 |
Scope of delivery:
1 x pump station FlowSol D / D HE with integrated
DeltaSol®D / D HE controller
1 x collector sensor FKP6
1 x store sensor FRP6
1 x wall mounting bracket
1 x accessory bag
2 x screw and dowl
2 x strain reflief
1. Pump station with integrated controller
• IntegratedcontrollerDeltaSol®D / D HE
• Outstandingdesign
• Ultrafastandprecisedigitalsensorsfortem-
perature, pressure and flow rate
• Safetyassemblywithsafetyvalveandmano-
meter
• High-qualitycasingforreducedheatlosses
Pump stations offer solutions for the efficient use of a
system through harmonized components.The new station
RESOL FlowSol D / D HE is characterized by the digital
sensors, which communicate with the controller via the
RESOL VBus®and which ensure the precise measurement
of temperature, pressure and flow rate.The enhanced status
and error diagnostic system allows for easy and intuitive
display of system states. Due to pictograms and graphic
balances, it can be easily and quicklyfound out whether the
system runs faultlessly or if there is an error.
As is the case with all other RESOL pump stations, the
shapely design of the FlowSol D / D HE plays an im-
portant role. The integrated controller has a full graphic
display, which displays the system states and ensures easy
and intuitive menu navigation.The station is equipped with
important componants and safety assemblies for operating
the solar thermal system:
• Ball valves in flow and return in combination with check
valves to prevent gravity circulation
• Digital sensors for measuring temperature, pressure and
flow rate
• AirStopp for manual bleeding of the solar thermal system
• Manometer for displaying the system pressure
• Safety valve to prevent inadmissible overpressure
• High-efficiency pump (on FlowSol D HE only)
The installation and commissioning of the solar station as
well as the connection of electrical components requires
technical knowledge commensurate with a recognised
vocational qualification as a fitter for plumbing, heating and
air conditioning technology, or a profession requiring a com-
parable level of knowledge.The following must be observed
during installation and commissioning:
• the relevant regional and national regulations
• the accident prevention regulations of the trade asso-
ciation
• the technical and safety instructions of these instructions
Safety instructions
Warning: Risk of scalding
There is a danger of steam emission with safety val-
ves.Therefore a discharge pipe must be connected
to the ¾“ internal thread of the safety assembly.
Please observe the enclosed instructions regarding
the safety valve when doing this.
Attention: Damage to property
The group of fittings must be installed with suffici-
ent spacing to the collectors because temperatures
in the vicinity of the collectors can be very high.An
intermediate vessel may be necessary for installa-
tion in the attic.
Attention: Damage to property
It is imperative that you make sure the EPDM
sealing elements of the solar station do not come
into contact with substances containing mineral oil.
Mineral oil products cause lasting damage to the
material, whereby its sealant properties are lost.
If necessary, ask the manufacturer whether the so-
lar fluid, fats or installation aids contain mineral oils.
We do not assume liability nor provide warranty
for damage to property resulting from sealants
damaged in this way.

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
|4
Technical Data
Dimensions:
Height (with insulation): 417 mm
Width (with insulation): 374 mm
Depth (with insulation): 179 mm
Distance centre: 160 mm
Distance axis/wall: 55 mm
Pipe connections: ¾" IT
Anschluss für ADG-Set:
3/4" AG, flat sealing
Outlet safety valve: 3/4" IT
Equipment:
Safety valve: 6 bar
Manometer: 0 - 6 bar
Non-return valves:
Opening pressure 200 mmWS, openable
Material:
Fittings: brass
Seals: EPDM
Insulation: EPP, l= 0,041 W/(m*K)
Technical Data:
Max. permitted pressure: 6 bar
Max. operating temperature: 120°C
Flow range: 100 ... 500 l/h
Size of collector field: 4 ... 25 m²
160 mm
55 mm
thermometer
flow
thermometer
return
controller
DeltaSol®D / D HE
pump
digital sensor
(return)
digital sensor
(flow)
AirStopp
safety
assembly
manometer

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
5 |
2. Mounting the station
0,0
1,0
2,0
3,0
4,0
5,0
6,0
7,0
8,0
9,0
10,0
0 200 400 600 800 1000 1200
0
9,8
19,6
29,4
39,2
49
58,8
68,6
78,4
88,2
98
FlowCon D / D HE
Grundfos Solar PM 15-85
Wilo ST 15/6
Pump characteristic / pressure loss characteristic FlowSol D / D HE
pressure [m head]
flow rate [l/h]
pressure loss [kPa]
ÎDetermine the mouting site of the station.
ÎTake the station out of the packing. Remove the front
half of the insulation by pulling it backwards.
ÎHold the enclosed wall mounting bracket against the
wall and mark the fastening holes, drill holes and insert
dowels
ÎFasten the wall mounting bracket to the wall with the
screws.
ÎPush the station against the wall mounting bracket.The
station catches and is then attached to to the wall.
ÎConnect the station to the solar thermal system.
ÎCheck the inlet pressure of the expansion vessel
and, if necessary, adjust it to the local conditions
(P inlet [bar] = 1 bar + DTh [m]*1/10 (DTh = height
difference between collector and station)
ÎConnect the electrical components of the solar station:
Attach the store and collector sensor and connect these
to the controller. Plug the controller into a socket.
ÎTighten all union nuts and screw connections.
ÎAttach the front half of the insulation to the station.

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
|6
Attention: Risk of scalding!
To prevent the solar fluid boiling in the collectors,
the system should not be flushed or filled during
periods of strong sunshine.
Attention: Risk of frost!
Solar thermal systems cannot be completely emp-
tied after flushing.There is a danger of frost damage
if water is used for flushing. Only use solar fluid to
flush and fill the solar thermal system.
Use a water-propylene glycol mixture as a solar
fluid (maximum 50% propylene glycol).
3. Commissioning
3.1 Flushing and filling the solar thermal
system
Flushing the store for initial commissioning
ÎDisconnect the expansion vessel from the solar thermal
system
ÎConnect the pressure hose of a flushing and filling stati-
on to the fill valve (3).
ÎConnect the flushing hose of a flushing and filling station
to the drain valve (5) at the lowest point of the solar
thermal system.
ÎClose the ball valve (4)
ÎOpen the fill valve (3) and the drain valve (5).
ÎFlush the solar thermal system by means of the flushing
and filling station until the discharged solar fluid is free
of dirt particles.
ÎSwitch off the filling pump
fig.1
Instructions for initial commissioning:
The optionally available flushing and filling unit should be
mounted horizontally at the lowest point in the return of
the solar circuit (see fig. 1).
A filter should be placed between the flushing and filling
station and the solar pump.
This flushing process is described in “3.2 Flushing the store
for initial commissioning”.Then continue as described in“3.3
Flushing and filling the solar thermal system”.
(4)
(3) (5)
Abb.2

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
7 |
When you did not carry out the steps described in chapter
3.2, please carry out steps 1 to 5 of chapter 3.2 before you
carry out the following steps:
ÎTurn the ball valves in flow (1) and in return (2) with
an open-ended spanner (wrench width 14) to a 45°
position. The non-return valves in the ball valves are
now open (fig. 4).
ÎFlush the solar thermal system using the flushing and
filling station for at least 15 minutes to remove all air
from the system. During this process, the solar pump
may run in manual mode.
ÎDuring flushing, bleed the solar thermal system several
times at the AirStopp until the discharged solar fluid is
free of air bubbles.
ÎConnect the expansion vessel to the solar thermal
system
ÎClose the drain valve (5) of the flushing and filling unit
with the filling pump running and increase the system
pressure to approx. 5 bar. The system pressure can be
read from the manometer
ÎClose the fill valve (3) and switch off the pump of the
flushing and filling station as well as the solar pump.
ÎCheck the manometer to see whether the system pres-
sure reduces (approx. 15 minutes) and eliminate leaks
where necessary.
ÎSet the operating pressure of the solar thermal system
(approx. 0.5 bar higher than the inlet pressure of the
expansion vessel) by opening the drain valve (5).
ÎClose the drain valve (5) and open the ball valve (4).
ÎRemove the hoses of the flushing and filling station and
screw the caps onto the fill and drain valves.
ÎPut the non-return valves in flow and return in operating
position by putting them in a vertical position (fig. 4)
using an open-ended spanner (wrench width 14).
ball valve: 45°
non-return valve
not operating
flow-through in both
directions
ball valve: 90°
ball valve closed, no
flow-through
ball valve: 0°
non-return valve
in operation, flow-
through only in flow
direction
fig.3
fig.4
12
Flushing and filling the solar thermal
system

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
|8
3.2 Emptying the solar thermal system
4. AirStopp
WARNING!
Risk of injury.The discharged fluid can have very high
temperatures. Place the collection container so that
people standing near by are not endangered when the
solar thermal system is being emptied.
ÎOpen the non-return valves in the ball valves in flow and
return by turning the ball valves to a 45° position with
an open-ended spanner.
ÎPlace a temperature-resistant collection container un-
der the drain ball valve at the lowest point of the solar
thermal system.
ÎOpen the drain valve at the lowest point of the solar
thermal system.
ÎOpen the bleeding devices at the highest point of the
solar thermal system, where available
ÎDispose of the solar fluid in observance of local regu-
lations.
The AirStopp (manual bleed valve) is for bleeding the solar
fluid in the solar thermal system.The air precipitated from
the solar fluid gathers in the upper area of the manual bleed
valve (see diagram) and can, if required, be discharged at the
bleeding valve.To guarantee faultless bleeding of the collec-
tor circuit the flow rate in the flow must be at least 0.3 m/s.
ÎCheck the system pressure after bleeding and if necessa-
ry increase it to the specified operating pressure.
WARNING:
Risk of injury caused by very high temperatures.
During bleeding the escaping air and solar fluid
can reach temperatures of over 100 °C.
Bleeding the solar thermal system directly after
commissioning
At first you should bleed the solar thermal system daily
and then weekly or monthly, depending on the volume of
discharged air., in order to achieve optimal efficiency.
Information for operators of solar
thermal systems
Bleed the solar thermal system half-yearly with
the manual bleed valve to achieve optimal effi-
ciency.

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
9 |
5. Digital sensors
The pump station is equipped with digital sensors in flow
and return of the station.The digital sensor in the return
measures the temperature and the pressure,the digital sen-
sor in the flow measures the temperature and the flow rate.
In the case of maintenance work or replacement of the
sensors, observe the following steps:
• remove clip at the digital sensor by pulling it backwards
• remove defective sensor.
• insert new sensor and secure with clip
The digital pressure and temperature sensor (return) has an
orifice on one side of the measurement head.
The digital flow rate and temperature sensor (flow) has an
orifice on both sides of the measurement head.
orifice in the
measurement
head
6. Connection
WARNING!
Always disconnect the controller
from power supply before opening
the housing!
The controller is already integrated in the station and ready
to plug in. In the case of maintenance or service work, the
controller is to be taken out from the station. Please pay
attention to the followong steps:
Îswitch off the system, disconnect plug from the mains
Îremove the front half of the insulation
Îunscrew the cross-recessed screw off the front cover
and remove it by pulling it upwards
Îunscrew the lower cross-recessed screw, push the con-
troller upwards and remove it.
Mounting of the controller has to be carried out in reverse
order.
For further information on electrical connection, of
the controller, please see chapter 15.
7. Accessories for the station
For installation screw connections are required, which are
not included in the scope of delivery. Self-sealing double
nipples, solder nipples or clamp-ring connections can be
used. For further information, please see product catalogue.
Note:
Check the fit of the sensor plugs before commis-
sioning the pump station!

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
|10
• Controllerespeciallydeveloppedforthepump
station FlowSol D / D HE
• Fullgraphicdisplaywithintuitivesymbols
• Digitalsensorsfortemperature,pressureand
flow rate
• Functioncontrol
• Graphicbalancingfunctions
Technical Data
Housing:
plastic, PC-ABS and PMMA
Protection type: IP 20 / DIN EN
60529
Ambient temp.: 0 ... 40 °C
Dimensions: 172 x 110 x 46 mm
Mounting: integrated in the pump
station FlowSol D / D HE
Display:
full graphic display for visualisation
Operation:
3 push buttons at the front
Functions: Controller integrated
in the pump station; with add-on
functions. Function control according
to BAW directives, operating hours
counter for the solar pump, tube
collector function and heat quantity
measurement.
Inputs: for 3 temperature sensors
Pt1000, 2 digital sensors
Outputs: 1 semiconductor relay
Bus: RESOL VBus®
Power supply:
100 ... 240 V~, 50 ... 60 Hz
Standby power consumption:
<1 W
Mode of operation: type 1.y
Switching capacity:
semiconductor relay:
1 A 100 ... 240 V~
110
30
62
172
46
The DeltaSol®D / D HE is integrated into the pump
station FlowSol D / D HE for standard solar thermal
systems.A digital sensor measures the temperature as well
as the pressure in the return and a second digital sensor
measures the temperature and the flow rate in the flow.
The controller has various functions such as speed control,
collector emergency shutdown,tube collector function and
is equipped with the RESOLVBus® for data communication.
The controller is integrated in the pump station and ready
to plug in.
8. Integrated controller DeltaSol®D / D HE

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
11 |
9. Installation
PE Pump (R1) Mains
11 12 13 14 15 16 17
N L N L
collector circuit
pump mains
10. Sensor and relay allocation
Sensor allocation
Relay allocation
1
2
3
backwards
SET
(selection-/
adjustment mode)
11. Operation and function
11.1 Adjustment keys When the hydraulic system is filled and ready for operation,
connect the controller to the mains.
The controller is operated by means of the 3 push buttons
below the display.
• Button 1 is used for scrolling forward through the menu
or to increase the adjustment values.
• Button 2 is similarly used for scrolling backwards and
reducing values.
• Button 3 is used for selection of the menu lines and for
confirmation.
forwards
Digital Sensor
S1
R1
S2
S3
Digital Sensor
Digital Sensor Tcol (S1) Tstb (S2) Tstt (S3) VBus PWM
A B C D 1 2 3 4 5 6 7 8 9 10
digital sensors sensor
collector
sensor store,
bottom
ensor store,
top blue brown
A = brown
B = green
C = white
D = yellow
Note:
The controller is already integrated in the sta-
tion and ready to plug in. In the case of mainte-
nance work and repair, pay attention to chapter
15 ‚Electrical connection‘!

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
|12
11.2 Menu structure
The controller is operated and controlled via the menu.
During normal operation, the status is displayed.
1,8 bar
Pressure
500 l/h
Flow rate
18,4 kW
Power
System OK
P
V
Display Description Adjustment range Factory setting
Balance/adjust. values
Max. pressure maximum system pressure
Min. pressure minimum system pressure
Max. s3 maximum temperature
store, top
Max. power maximum power
heat heat quantity
oper. hours R1 operating hours relay 1
oper. days operating days
--adjust values:--
Date
Time
Tstmax maximum store temperature 0 ... 90 °C 60 °C
DTon switch-on difference 1,0 ... 25,0 K 5,0 K
DToff switch-off difference 0,0 ... 24,0 K 3,0 K
DTset set difference 2 ... 50 K 10 K
Relay mode Off,Auto, Min., Max. Auto
--expert:--
DTstmax maximum store hysteresis 1,0 ... 10,0 K 2,0 K
Tstsec store emergency shutdown tem-
perature
0 ...95 °C 90 °C
DTstsec store emergency shutdown
hysteresis
1,0 ... 10,0 K 2,0 K
Tcolsec collector emergency shutdown
temperature
20 ... 180 °C 130 °C
DTcolsec collector emergency shutdown
hysteresis
10 ... 50 K 10 K
collector cooling Yes, No Yes
Tcolmax maximum collector temperature 10 ... 130 °C 110 °C
DTcolmax maximum collector hysteresis 5,0 ... 20,0 K 5,0 K
collector minimal. minimum collector function Yes, No No
Tcolmin minimum collector temperature 0 ... 90 °C 10 °C
DTcolmin minimum collector hysteresis 0,3 ... 10,0 K 2,0 K
Note:
The displayed values and options depend on the
functions and only appear if these are available
for the adjusted system parameters.

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
13 |
Display Description Adjustment range Factory setting
Recooling Yes, No No
Frost protection Yes, No No
Min. speed minimum speed (101) 30 ... 100 % (101) 30 %
rise rise control 1 ... 20 K 2 K
tube collector Yes, No No
interval 1 ... 60 min 30 min
runtime 5 ... 1200 s 30 s
start 00:00 ... 23:59 07:00
stop 00:00 ... 23:59 19:00
antifr. type Tyfo LS, Ethylene, Propylene,
Water
Tyfo LS
antifreeze ratio 20 ... 70 % 40 %
DT too high Yes, No No
Non-ret. valve Yes, No No
overpressure Yes, No Yes
on at 0,6 ... 6,0 bar 5,5 bar
off at 0,3 ... 5,7 bar 5,0 bar
Leakage Yes, No Yes
on at 0,3 ... 5,7 bar 0,7 bar
off at 0,6 ... 6,0 bar 1,0 bar
DT-overrun Yes, No No
off at 0,0 ... 20,0 K 5 K
Flow rate Yes, No No
expert Yes, No No
language
1FlowSol D HE

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
|14
11.3 Operation Adjustment mode
In the adjustment mode, different functions are selected
and values are adjusted. Press button 3 for 2 seconds in
order to access the adjustment menu.
ÎUse button 1 and 2 respectively to select the function
to be activated or the adjustment value and confirm
with button 3.
Adjusting a value:
ÎSelect the value with button 1 or 2
Îbriefly press button 3; the adjustment range is shown
in form of a bar
Îadjust the selected value with buttons 1 or 2; the value
is shown on the bar by means of a slide
ÎBriefly press button 3 to confirm the adjustment.
ÎPress button 3 again in order to store the adjustment
and to get back to the adjustment menu.
If button 3 is not pressed after an adjustment has been car-
ried out, the display changes back after some seconds.The
adjusted value will then not be stored.
Selecting a function or an option:
ÎSelect a function or an option with button 1 or 2
Îbriefly press button 3.
ÎSelect „Yes“ in order to activate the selected function,
select „No“ to deactivate the function.
ÎBriefly press button 3 to confirm the selection.
ÎPress button 3 again in order to store the selection.
An activated function is indicated by means of a marked
checkbox. The corresponding adjustment values are also
displayed.
Yes
No
Collector cooling:
Collector cooling
Tcolmax 110 °C
∆Tcolmax 5,0 K
Balance / adjust. values:
x
90
0
60 °C
Storage max. temp.
ÎIn order to access the display mode, keep button 3
pressed for 2 seconds.
If no button is pressed in the adjustment mode within 2
minutes, the display automatically changes to show the
status display.
1
2
3
backward
SET
(selection-/
adjustment mode)
forward
11.4 Usercode Expert
Code 0077
All display and adjustment values are shown,all adjustments
can be altered.
In order to enter the user code, scroll down in the sub-
menu „balance and adjustment values“ until you reach the
item „relay mode“, then keep button 2 pressed for 2 se-
conds.
Note:
After the menu item „user code“ has been selected, this
code must be entered.
If the expert user code is not entered, the expert menu will
not be displayed.
If the expert menu is activated, it will be accessible for 60
minutes. If the controller is restarted, the expert menu can-
not be accessed. By means of the option „Expert“, in the
expert menu, the expert menu can be permanently enabled.

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
15 |
12. Display mode
Status display
In the status display, system pressure, flow rate, power, and
status are shown.
1,8 bar
Pressure
500 l/h
Flow rate
18,4 kW
Power
System OK
P
V
In the measurement value display, collector temperature,
flow temperature, base and top store temperature, return
temperature, and pump speed are shown.
06 12 18
100
Collector yesterd.
30
6 12 18
60
Store yesterd.
In the balance value display, the following temperature
courses (in °C) are shown one after the other over time.
• collector today
• store today
• collector yesterday
• store yesterday
Measurement values
Balance values
12.1 Status, measurement values and
balance values
Yields in kWh
6
7
8
5
34
In this balance value display, the heat yield (in kWh) of the
past 7 days is shown.
During normal operation, the status is displayed.
ÎBriefly press button 2, measurement and balance values
will then be shown.
ÎIn order to access the adjustment menu, press button
3 for 2 seconds.
30
6 12 18
60
Store today
06 12 18
100
Collector today
75 °C
78,6 °C
80 °C
42,6 °C
100 % 38 °C

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
|16
1
2
3
backward
SET
(selection-/
adjustment mode)
forward
12.2 Balance values
Maximum system pressure
Display of maximum system pressure since commissioning
or latest reset.
Minimum system pressure
Display of minimum system pressure since commissioning
or latest reset.
Maximum store temperature
Display of maximum store temperature (at the top, in °C)
since commissioning or latest reset.
Maximum power
Display of maximum power of the system (in kW) since
commissioning or latest reset.
Heatquantity
Display of heat yield in kWh and MWh respectively since
commissioning or latest reset.
Operating hours
Display of operating hours of the solar pump in h since
commissioning or latest reset.
Operating days
Display of operating days since commissioning.
2,4 bar
Max. pressure
1,5 bar
Min. pressure
20,4 kW
Max. power
94 °C
Max. upper storage
167
Operating days
16372 kWh
Heat
1075 h
Operating hours R1
The balance values can be reset in the balance and adjust-
ment menu.
ÎKeep button 3 pressed for 2 seconds.This changes the
display to show the balance values and adjustment values.
ÎSelect the balance value which is to be reset with but-
tons 1 and 2 and briefly press button 3.
The value is then reset to 0.
13. Functions and options
Store loading
DTon
adjustment range 1,0 ... 25,0 K
factory setting 5,0 K
DToff
adjustment range 0,0 ... 24,0 K
factory setting 3,0 K
If the adjusted switch-on difference "DTon“ between collec-
tor and store is exceeded, the store will be loaded. If this
difference falls below the adjusted switch-off difference
"DToff“, the loading function will be switched off.
Loading of the store will also be switched-off or suppressed
if the collector is blocked (see collector minimum limitation)
or if the store is at maximum limitation.
Store maximum limitation
Tstmax
adjustment range 0 ... 90 °C
factory setting 60 °C
DTstmax
adjustment range 1,0 ... 10,0 K
factory setting 2,0 K
If the adjusted maximum temperature „Tstmax“ is exeeded,
the loading of the store is stopped. If the store cools down
by more than 2 K (hysteresis), the store will be loaded again.

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
17 |
Store emergency shutdown
Tstsec
adjustment range 0 ... 95 °C
factory setting 90 °C
DTstsec
adjustment range 1,0 ... 10,0 K
factory setting 2,0 K
If the cooling options are activated (e.g. collector cooling),
the store will be loaded beyond the adjusted maximum
temperature.
In order to avoid too high temperatures in the store, the
emergency shutdown of the store is additionally provided,
which also blocks the store for the cooling options. If the
store temperature reaches the adjusted value „Tstsec“, the
emergency shutdown is activated.
Collector cooling function
collector cooling
selection „Yes“, „No“
factory setting Yes
TColmax
adjustment range 10 ... 130 °C
Werkseinstellung 110 °C
DTColmax
adjustment range 5,0 ... 20,0 K
factory setting 5,0 K
The collector cooling function starts, when the adjusted
maximum collector temperature is reached. If this tempe-
rature is underrun by the adjusted hysteresis, this function
is switched off.
The collector is cooled via heat transfer to the store.
The pump output (provided that it is activated) is controlled
with maximum relative pump speed.
Note:
The maximum collector temperature „Tcolmax“ can be
10 K lower than the collector emergency shutdown tem-
perature and 10 K higher than the maximum store tempe-
rature (blocking).
Collector emergency shutdown
Tcolsec
adjustment range 20 ... 180 °C
factory setting 130 °C
DTcolsec
adjustment range 10 ... 50 K
factory setting 10 K
At high collector temperatures (depending on system pres-
sure or antifreeze concentration etc.) the systems stagnates.
This means that solar loading is not possible.
If the adjusted temperature threshold „Tcolsec“ is excee-
ded, the collector will no longer be used for loading.
Recooling
recooling
selection: „Yes“, „No“
factory setting: „No“
If the adjusted maximum store temperature has been rea-
ched, the solar pump remains on in order to prevent the
collector from being overheated. During this process, the
store temperature may increase, but only up to the adjusted
store emergency shutdown temperature.
In the evening, the system remains on until the store has
been cooled down to its adjusted maximum store tempe-
rature via the collector and the pipework.
Collector minimum limitation
ColleCtor minimal.
selection: „Yes“, „No“
factory setting: „No“
tcolmin
adjustment range 0... 90 °C
factory setting 10 °C
DTcolmin
adjustment range 0,3... 10,0 K
factory setting 2,0 K
A collector is considered to be blocked, if it has not reached
the adjusted minimum temperature or if the „collector
blocked“ condition is fulfilled.

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
|18
As soon as the temperature at the collector is 4 °C, the
frost protection function operates the loading circuit bet-
ween the collector and the store in order to protect the
medium in the loading circuit against freezing or coagulation.
If the collector temperature exceeds 5 °C, this function is
switched-off.
The pump output uses maximum pump speed.
Adjustment channel for the heat transfer fluid used.
Antifreeze type
antifr. type
selection „Tyfo LS“, „Ethylene“, „Propylene“, „Water“
factory setting: „Tyfo LS“
Antifreeze ratio
antifreeze ratio
adjustment range 20 ... 70 %
factory setting 40 %
Adjustment channel for the glycol concentration in the heat
transfer fluid.The concentration of proylene-glycol in the
water-glycol mixture should not exceed 50 %.
Frost protection
Frost protection
selection: „Yes“, „No“
factory setting: „No“
Tube collector function
tube collector
selection: „Yes“, „No“
factory setting: „No“
interval
adjustment range 1 ... 60 min
factory setting 30 min
runtime
adjustment range 5 ... 500 s
factory setting 30 s
start
adjustment range 00:00 ... 23:59
factory setting 07:00
stop
adjustment range 00:00 ... 23:59
factory setting 19:00
This function helps overcome non-ideal sensor position
with some tube collectors and compensates for the delayed
temperature measurement.
This function operates within a given time frame (“start“
and “stop“). It activates the collector circuit pump for 30
seconds (adjustable via the parameter “runtime“) every 30
minutes at collector standstill (adjustable via the parameter
“interval“).
If the collector sensor is defective or if the collector is blo-
cked, this function is suppressed or switched-off.
The collector circuit is operated at minimum pump speed.
Pump speed is controlled according to flow temperature
(to keep the flow temperature constant).Therefore, the
dependence on the temperature difference is released.The
flow set temperature can be adjusted via the adjustment
value “Tflowset“. If the temperature sensor in the flow is
defective, the pump is operated at 100 %.
Target temperature
target temperature
selection „Yes“, „No“
factory setting: „No“
Tflowset
adjustment range 0 ... 80 °C
factory setting 60 °C

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
19 |
Speed control
Min. speed
adjustment range (10) 30 ... 100%
factory setting (10) 30 %
DTset
adjustment range 2 ... 50 K
factory setting 10 K
rise
adjustment range 1 ... 20 K
factory setting 2 K
The relay is a semiconductor relay for pump speed control
of standard pumps. Relative pump speed is adapted in 10 %
steps to the current temperature difference between flow
and return.The parameter "DTset“ is used as a set value
for pump speed control. Flow and return sensors are used
as reference sensors. The parameter „rise“ determines at
which change of temperature difference the speed will be
increased. In some cases, it is necessary to increase the
factory setting of the minimum pump speed (30%).
Furthermore, the controller keeps the flow rate within the
flow range of the station.
The FlowSol D HE with the high-efficiency pump controls
the pump speed down to 10% via the PWM output.
Defective sensors are shown in the status display. In the
next menu, the fault is indicated. For this purpose, briefly
press button 2.
Defective sensors
1,8 bar
Pressure
500 l/h
Flow rate
18,4 kW
Power
Error
S2 defect
P
V
broken
78,6 °C
92°C
34,5 °C
80% broken
The defective sensor is indicated:
If the cable of a temperature sensor is broken, „broken“
is displayed, if the cable of a temperature sensor is short-
circuited, „short“ is displayed.
If a digital sensor is defective, „Defect“ is displayed.
14. Messages
DT-overrun function
DT-overrun
selection „Yes“, „No“
factory setting „No“
off at
adjustment range 0,0 ... 20,0 K
factory setting 5 K
By means of this function, the pump continues to heat the
store even if the switch-off difference between collector
and store has been reached. The pump switches off, if the
adjusted "DT-overrun difference“ between flow and return
sensor has been underrun.
In this menu, the relay can be set into different modes:
• Off
• Auto
• Min.(minimumspeed)
• Max.(maximumspeed)
If "Off", "Min." or "Max." is selected, the symbol will be
shown on the status display.
Relay mode
Relay mode
selection „Off“, „Auto“, „Min.“, „Max.“
factory setting „Auto“
1,8 bar
Pressure
500 l/h
Flow rate
18,4 kW
Power
Error
S2 defect
P
V
In the case of an error, a message is shown in the status
display. If there are several messages, only the message
having the highest priority is shown in the status display.All
other recently detected errors and messages respectively
are listed above the balance values (keep button 3 pressed
for 2 seconds).

© RESOL 11294 flowsol_d_d_he.monen.indd
FlowSol D / D HE
|20
Warning non-return valve
non-ret. valve
selection„Yes“, „No“
factory setting „No“
This message is shown if between 10 p.m. and 5.00 a.m. a
store is loaded.
The alam message is released, when the condition men-
tioned above is fulfilled for at least 1 minute.This prevents
the alarm message from being released by short-term
disturbances.
Warning „DT too high“
DT too high
selection„Yes“, „No“
factory setting„No“
This message is shown, if solar loading has been carried out
for a period of 20 minutes with a differential higher than
50 K.
Error message Digital Sensor If the communication between the controller and the
sensors breaks down (60 s) or if the measured value is
outside the given range (dV < 0 l/min or dV > 20 l/min //
Dp < 0 bar or DP > 13 bar), the sensors are automatically
reset (power supply is switched off). The communication
and the measured value are checked again. If this is without
success, the sensor is defective. Control of the system is not
interrupted, but monitoring functions such as heat quantity
measurement, monitoring of pressure and flow rate will no
longer be carried out.
Error message flow rate
flow rate
selection „Yes“, „No“
factory setting „No“
If no flow rate is measured within 10 seconds after the solar
ciruit has been commissioned (dV > 0 l/min), the reset of
the digital sensors is carried out. If no flow rate is measured
after this, an error message is shown.
The threshold which is to be monitored has to be adju-
sted (factory setting 0,7 bar). If this value is underrun, the
message is generated and the system is shut down until the
system pressure exceeds the switch-off threshold (factory
setting 1,0 bar).
Error message Leakage
Leakage
selection „Yes“, „No“
factory setting „Yes“
on at
adjustment range 0,7 ... 5,7 bar
factory setting 0,7 bar
off at
adjustment range 1,0 ... 6,0 bar
factory setting 1,0 bar
Warning overpressure
overpressure
selection „Yes“, „No“
factory setting „Yes“
on at
adjustment range 1,5 ... 5,5 bar
factory setting 5,5 bar
off at
adjustment range 1,0 ... 5,0 bar
factory setting 5,0 bar
This message is displayed, if the system pressure is too high.
The threshold which has to be monitored is set (factory
setting 5,5 bar). If this value is exceeded, the message is
generated and the system is shut down or blocked until the
system pressure falls below the switch-off threshold (factory
setting 5,0 bar).