Resol DeltaSol DB3-F User manual

DeltaSol
®DB3-F
www.resol.de
Thank your for buying this RESOL product.
Read this manual carefully to get the best perfomance from this unit.
RESOL DeltaSol
®DB3-F
Mounting
Connection
Operation
Troubleshooting
Examples
Manual
*48004710* 48004710

DeltaSol
®DB3-F
© RESOL 09098 deltasol_db3-f.monus.indd
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Table of contents
Safety advice.............................................................................................2
Technical data and overview of functions ..............................................3
1. Installation........................................................................................... 5
1.1 Mounting......................................................................................................5
1.2 Electrical connection.................................................................................5
1.2.1 Data communication / Bus........................................................................6
1.2.1 Standard solar system...............................................................................6
1.2.2 Solar system and backup-heating ...........................................................7
2. Operation and function .....................................................................8
2.1 Buttons for adjustment.............................................................................8
2.2 System Monitoring-Display......................................................................8
2.2.1 Channel display...........................................................................................8
2.2.2 Tool bar........................................................................................................8
2.2.3 System-Screen ............................................................................................9
2.3 Flashing codes.............................................................................................9
2.3.1 System-Screen flashing codes .................................................................9
2.3.2 LED flashing.................................................................................................9
3. Commissioning .................................................................................10
4. Control parameters and display channels .....................................11
4.1 Overview of channels .............................................................................11
4.1.1-9 Display channels .......................................................................................12
4.1.10-22 Adjustment channels...............................................................................13
5. Trouble shooting...............................................................................17
5.1 Various........................................................................................................18
6. Accessory ..........................................................................................20
Imprint ..............................................................................................20
Safety advice
Please read the following information
carefully before installing and opera-
ting the controller. In this way damage
to the solar system caused by wrong
installation will be avoided. Please ob-
serve that the mounting is adapted to
the characteristics of the building, that
the local regulations are respected and
is conform with the technical rules
Instructions:
Attention should be paid to
- valid local regulations
Appropriate usage
The controller is to be used in drain-
back solar thermal systems in com-
pliance with the technical data speci-
fied in these instructions.
Improper use excludes all liability
claims.

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®DB3-F
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!
• System-Monitoring-Display
• Upto4temperaturesensors
Pt1000
• Heatproductionmeasurement
• RESOLVBus®
• Functioncontrol
• User-friendlyoperation
• Easy-to-mounthousingwith
outstanding design
• operatinghourscounterand
thermostat function
Housing:
plastic, PC-ABS and PMMA
Protection type: IP 20 / DIN 40050
Ambient temp.: 32 ... 104 °F
Dimensions:172 x 110 x 46 mm
Mounting: wall mounting, mounting
into patch-panels is possible
Display: System screen for systems
visualisation,16-segment display,7-seg-
ment display, 8 symbols for system
status and operating control lamp
Operation: 3 push buttons at the
front of the housing
Functions: Differential tempera-
ture controller with optional system
functions. Function control, operating
hours counter for solar pump, pump
speed control and heat production
measurement.
Inputs:
for 4 temperature sensors Pt1000
Outputs: 2 standard relays
Bus: RESOL VBus®
Power supply:
115 V~, 50 ... 60 Hz
Total switching capacity:
4 (2) A (115) V~
Mode of operation:
Type 1.b
Switching capacity:
electromechanical relay:
2 (1) A (115) V~
Deliveryscope:
1 x DeltaSol
®DB3-F
1 x accessory bag
1 x spare fuse T4A
2 x screw and dowel
4 x strain reflief and screw
Additionnally included in the accesory bag:
1 x sensor FKP6
2 x sensor FRP6
Controller especially developed for
solar drainback systems

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®DB3-F
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Examples DeltaSol
®DB3-F
Standard drain back
systems
Drainback systems with
backup-heating
Forfurtherinformation
on electrical connection,
please see chapter 1.
Order note
• DB3:2standard relay, thermostat or
booster function, operating hours counter
RESOL DeltaSol
®DB/3 115 426 07
RESOL DeltaSol
®DB/3 -fullkit
incl. 3 temperature sensors Pt1000 (1 x FKP6, 2 x FRP6) 115 426 17
Drain back systems with
booster function

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®DB3-F
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1.2 Electrical connection The power supply to the controller must be carried out
via an external power switch (last step!) and the supply
voltage must be 115 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 2 relays to which loads
such as pumps, valves, etc. can be connected:
• Relay 1
18 = conductor R1
17 = neutral conductor N
13 = grounding clamp
• Relay 2
16 = conductor R2
15 = neutral conductor N
14 = grounding clamp
Temperature sensors (S1 to S4) have to be connected
to the following terminals (either polarity):
1 / 2 = sensor 1 (e.g. sensor collector 1)
3 / 4 = sensor 2 (e.g. sensor tank 1)
5 / 6 = sensor 3 (e.g. tank top sensor)
7 / 8 = sensor 4 (e.g. return temperature sensor)
The power supply connection has to be carried out at
the following terminals:
19 = neutral conductor N
20 = conductor L
12 = grounding clamp
Electrostatic discharge can lead to damage to elec-
tronic components!
Dangerous voltage!
12
S1 S2 S3
3456
Te mp. Sensor
Pt1000
LNR1NR2N
201918171615
S4
78 141312
2 (1) A (115)V~
2 (1) A (115)V~
R1
R2
VBus
910
power supply terminals
load terminals
sensor terminals
grounding clamp
fuse
display
push button
fuse 4A
cable gland with strain relief
front cover
1.1 Mounting
The unit must only be located in dry interior locations. It
is not suitable for installation in hazardous locations and
should not be placed close to any electromagnetic fields.
The controller must additionally be supplied from a double-
pole switch with contact gap of at least 3 mm. Please pay
attention to separate routing of sensor cables and power
supply cables.
1. Unscrew the cross-head screw from the cover and
remove it along with the cover from the housing.
2. Mark the upper fastening point on the wall and drill and
fasten the enclosed wall plug and screw leaving the head
protruding.
3. Hang the housing from the upper fastening point and
mark the lower fastening point through the hole in the
terminal box (centers on 130 mm). Drill and insert the
lower wall plug.
4. Fasten the housing to the wall with lower fastening screw
and tighten.
1. Installation WARNING!
Always switch-off power supply and
disconnect the controller from the power
supply before opening the housing!
fastening
fastening
RESOL VBus®

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VBus
10
9
S1
S2
S4 / TRF
1.2.2 Terminal allocation Arrangement 1 Standard solar system with 1 tank, 1 pump and 3 sen-
sors. The sensor S4 / TRF can be optionally used for heat
production measurement.
R1
ARR1
S3
Symbol Description
S1 collector sensor
S2 tank sensor bottom
S3 tank sensor top
(optional)
S4 / TRL sensor for heat production
measurement
(optional)
R1 solar pump
1.2.1 Datacommunication/Bus The controller comes with a RESOL VBus®for data com-
munication and energy supply of external modules. The
connection is effected with optional polarity at the clamps
marked with „VBus“.Via this data Bus you can install one or
more RESOL VBus®modules, e.g.:
• RESOL large display GA3 / SD3
• RESOL Data logger, DL2
• RESOL Data teleindication
Additionaly, the controller can be connected to the PC with
the help of a RESOL RS-COM adapter. With the RESOL
ServiceCenter Software (RSC) the controller parameters
can be changed, measurements can be read out, processed
and visualised.The software enables an easy function control
and adjustment of the system.A lightVersion of the software
can be downloaded from www.resol.de for free.
RESOL VBus®
connection clamps
12
S1 S2 S3
3456
Te mp. Sensor
Pt1000
LNR1NR2N
201918171615
S4
78 141312
2 (1) A (115)V~
2 (1) A (115)V~
R1
R2
VBus
910

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®DB3-F
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VBus
10
9
R2
S1
S2
R1 S3
S4 / TRF
Solar system and backup heating with 1 tank,3 sensors
and backup heating.The sensor S4 / TRF can be optionally
used for heat production measurement.
ARR 2
1.2.3 Terminal allocation Arrangement 2
VBus
10
9
Standard solar system with booster function option
with 1 tank, 2 pumps and 3 sensors.The sensor S4 / TRF can
be optionally used for heat production measurement.
S4 / TRF
R1 R2
S2
S3
S1
Symbol Description
S1 collector sensor
S2 tank sensor bottom
S3 tank sensor top /
thermostat sensor
S4 / TRF sensor for heat production
measurement
(optional)
R1 solar pump
R2 booster pump
ARR1
with booster
Symbol Specification
S1 collector sensor
S2 store sensor bottom
S3 store sensor top
S4 / TRF sensor for heat production
measurement (optional)
R1 solar pump
R2 pump for backup heating

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1
3
2
backwards forwards
SET
(selection / adjustment mode)
The system monitoring display consists of 3 blocks:channel
display, tool bar and system screen (active arrange-
ment).
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 and temperature differences are indicated
in°C or K respectively.
2.2.1 Channel display
channel display
2.2.2 Tool bar
The additional symbols in the tool bar indicate the actual
system status.
tool bar
2. Operation and function
2.1 Buttonsforadjustment
2.2 System-MonitoringDisplay
!
Complete Monitoring-Display
The controller is operated via the 3 push buttons below
the display.The forward-button (1) is used for scrolling for-
ward through the display menu or to increase the adjustment
values.The backward-button (2) is similarly used for scrolling
backwards and reducing values.
In order to access the adjustment mode, scroll down in the
display menu and press the forward button (1) for approx.
2 seconds after you have reached the last display item. If an
adjustmentvalueis shown on the display, the „SEt“ icon
is displayed. Now, you can access the adjustment mode by
using button 3.
• Press buttons 1 and 2 in order to select a channel
• Briey press button 3, „SEt“ will ash
• Adjust the value by pressing buttons 1 and 2
• Briey press buttons 3, so that „SEt“ permanently
appears, the adjusted value will be saved.
Symbol standard flashing
relay 1 active
relay 2 active
tank maximum limitation
active / maximum tank
temperature exceeded
collector cooling function or
recooling function active
collector emergency shutdown
or tank emergency shutdown
active
+ sensor defective
+ manual operation active
SET-mode, change of adjust-
ment value is possible

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®DB3-F
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The system screen (active arrangement) shows the scheme
which has been selected. The screen consists of several
system component symbols, which are - depending on the
current status of the system - either flashing, permanently
shown or „hidden“.
sensor
collector
pumps
additional symbol
burner operation
tank
tank heat exchanger backup heating
(with additional symbol)
tank top sensor
collector
with collector sensor
pump
tank 1
with heat exchanger
backup-heating
with burner symbol
temperature sensor
2.2.3 System-Screen
System-Screen
green: everything OK
red/green flashing: initialisation phase
manual operation
red flashing: sensor fault
(sensor symbol is flashing quickly)
2.3 Flashingcodes
2.3.2LEDashingcodes
2.3.1 System screen codes
•Pump symbols are flashing during initialization phase
•Sensor symbols are flashing if the corresponding sensor
display channel is selected.
•Sensor symbols are flashing in the case of a sensor fault.
•Burner symbol is flashing if the backup heating is active

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®DB3-F
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3. Commissioning
When the controller is commissionend for the first time, the arrangement has to be
selected first
1. Switch on power supply. During the initialization phase,
the operating control lamp flashes red and green. The
version number and the language selection menu are
displayed.
During initial commissioning, the language has to be selected.
2. - Select the adjustment channel LANG
- Change to the -mode (see. 2.1)
- Select your language
- Save the adjustment by pressing the button
After initialization, the controller is in the automatic mode
with typical settings.The pre-programmed system scheme
is Arr 1.
3. - select adjustment channel Arr
- change to the -mode (see 2.1)
- select the arrangement via the Arr-index number
- save the adjustment by pressing the button
Now the controller is ready for operation with typical settings
to suit that system and normally the factory settings will give
close to optimum operation.
Overview of arrangements:
ARR 1 : standard solar sytem (with booster function option)
ARR 2 : solar system with backup heating
1
3
2
backwards forwards
SET
(selection / adjustment mode)
Operation
control lamp
ARR 1 ARR 2
ARR 1
with booster

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4. Control parameters and display channels
4.1 Overview of channels
channel ARR description page
1 2*
INIT x x time period - switch-on conditions
active
12
FLL x x time period - filling time active 12
STAB** x x time period - stabilisation active 12
COL x x temperature collector 12
TST x Temperature tank 12
TSTL x temperature tank base 12
TSTU x temperature tank top 12
S3 x temperature sensor 3 12
TRF   temperature return sensor 12
S4   temperature sensor 4 12
n % x speed relay 1 12
n1 % x speed relay 1 12
h P x operating hours relay 1 13
h P1 x operating hours relay 1 13
h P2 x operating hours relay 2 13
kWh   heat quantity kWh 15
MWh   heat quantity MWh 15
ARR 1-2 Arrangement
DT O x x Switch-on temperature difference 13
DT F x x Switch-off temperature difference 13
DT S x x Sset temperature difference 13
RIS x x Rise 13
tDTO x x time period - switch-on conditions 13
tFLL x x filling time 13
tSTB x x time period - stabilisation 14
OBST*** x booster function option 14
S MX x x maximum temperature tank 1 14
EM x x emergency shutdown collector 1 15
channel ARR description page
1 2
OCN x x option collector minimum
limitation 15
CMN x x minimum collector temperature 15
TH O x switch-on temp. thermostat 16
TH F x switch-off temp. thermostat 16
OHQM x HQM option 14
FMAX   maximum flow rate 14
MEDT   antifreeze type 14
MED% MEDT MEDT antifreeze concentration 14
n1MN x minimum speed relay 1 16
HND x x manual mode relay 1 16
HND1 x x manual mode relay 1 16
HND2 x x manual mode relay 2 16
LANG x x language 16
Db x XX.XX
Legend:
x
Corresponding channel is available.
x*
Corresponding channel is available when the corresponding
option is enabled

Only if the option heat production measurement is activa-
ted (OHQM), will the corresponding channel be available.
MEDT
Only if an antifreeze (MEDT) other than water orTyfocor
LS/G-LS(MEDT0or3) is used, will the channel anti-
freeze concentration (MED%) be displayed.

Only if the option heat production measurement is deactiva-
ted (OHQM), will the corresponding channel be available.
Please note:
Only if temperature sensors are connected, will S3 and S4
be displayed.

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4.1.4 Collector temperature
Indicates the collector temperature.
•COL : Collector temperature
COL:
Collector temperature
Display range: -40 ...+480 °C
4.1.5 Tank temperatures
Indicates the tank temperature.
•TSP : tank temperature
•TSPU : tank temperature bottom
• TSPO : tank temperature top
TSTTSTL,TSTU:
Tank temperatures
Display range: -40 ...+480 °F
4.1.6 Sensor 3 and Sensor 4
Display of the current temperature at the corresponding
additional sensor (without control function).
•S3 : temperature - sensor 3
•S4 : temperature - sensor 4
Please note:
Only if the temperature sensors are connected (displa-
yed), will S3 and S4 be displayed.
S3, S4:
Sensor temperatures
Display range: -40 ...+480 °F
4.1.7 Other temperatures
Display of the current temperature at the sensor.
•TRF : temperature - return
TRF:
Other measured temperatures
Display range: -40 ...+480 °F
4.1.8 Pump speed
Display of the current pump speed of the corresponding
pump (on DB2 and DB4 only).
•n % : current pump speed (1-pump system)
•n1 % : current pump speed pump 1
n %, n1 %:
Pump speed
Display range: 30 ...100 %
4.1.1 Initialization
Indicates the time adjusted in tDTE, running backwards.
•INIT : Initialization
INIT:
Initialization active
4.1.2 Fillingtime
Indicates the time adjusted in tFLL, running backwards.
•FLL : filling time
FLL:
Filling time active
4.1.3 Stabilization
Indicates the time adjusted in tSTB, running backwards.
•STAB : Stabilization
STAB:
Stabilization

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4.1.9 Operating hours counter
h P / h P1 /h P2:
Operating hours counter
Display channel
4.1.10 ∆T-regulation
Please note: The switch-on temperature difference must
be at least 0,5 K higher than the switch-off temperature
difference.
DTO:
Switch-on temperature diff.
Adjustment range: 2...40
Factory setting: 20.0
DTF:
Switch-off temperature diff.
Adjustment range: 1 ... 38
Factory setting 8
4.1.11Timeperiod-switch-onconditions
tDTO:
Time periode -
switch-on conditions
Adjustment range: 1 ... 100 s
Factory setting: 60 s
The parameter tDTO is used for adjusting the time period
during which the switch-on condition must be permanentely
fulfilled.
4.1.12Fillingtime
tFLL:
Filling time
Adjustment range: 1 ... 30 min
Factory setting: 5 min
The filling time can be adjusted using the parameter tFLL.
During this period, the pump runs at 100% speed and the
booster pump is additionally switched-on.
The operating hours counter accumulates the solar opera-
ting hours of the respective relay (hP/ h P1 / hP2). Full
hours are displayed.
The accumulated operating hours can be set back to zero.
As soon as one operating hours channel is selected, the sym-
bol is displayed. Press the SET (3) button for approx. 3
seconds in order to access the RESET-mode of the counter.
The display symbol will flash and the operating hours
will be set to 0. Confirm the reset with the button in
order to finish the reset.
In order to interrupt the RESET-process, do not press a
button for about 5 seconds. The display returns to the
display mode.
When the switch-on difference (DTO) is continuously ex-
ceeded during the tDTO period, the pump is switched on.
When the temperature difference falls below the adjusted
switch-off difference (DTF), the controller switches off.

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4.1.15 Maximum tank temperature If the adjusted maximum temperature is exceeded, the tank
will no longer be loaded in order to avoid damage caused by
overheating. If the maximum tank temperature is exceeded,
will be shown.
Please note:The controller is equipped with a tank emer-
gency shutdown function,which prevents the tank from being
loaded when the tank temperature exceeds 295 °F.
S MX:
Maximum tank temperature
Adjustment range: +40 ... 480
4.1.14Boosterfunctionoption
OBST:
Booster function
Adjustment range: ON, OFF
Factory setting: OFF
This function is used for switching on a second pump during
filling the solar system.When solar loading starts, R2 is ener-
gized in parallel to R1.After the filling time (tFLL) has ended,
R2 is switched off.
4.1.16Heatproductionmeasurement
OHQM:Heat quantity mea-
surement
Adjustment range: OFF ...ON
Factory setting: OFF
Heat production measurement is possible if a flowmeter
is used. For this purpose, the heat quantity measurement
option (OHQM)has to be enabled.
The flow rate should be read from the flowmeter (l/min)
and has to be adjusted in the channel FMAX. Antifreeze
type and concentration of the heat transfer medium have to
be adjusted in the channels MEDTandMED%.
Antifreeze type:
0 : water
1 : propylene glycol
2 : ethylene glycol
3 : Tyfocor® LS / G-LS
FMAX:
Flow rate in l/min
Adjustment range: 0 ... 20
in 0,1-steps
Factory setting: 6,0
MEDT: Antifreeze type
Adjustment range: 0 ...3
Factory setting: 1
MED%: Antifreeze concen-
tration (Vol-) %
When MEDT 0 or 3 is used,
the parameter MED% is
‚hidden‘.
Adjustment range: 20 ...70
Factory setting: 45
4.1.13 Stabilization
tSTB:
Stabilization
Adjustment range: 1 ... 15 min
Factory setting: 2 min
The parameter tSTB is used for adjusting the time period
during which the switch-off condition will be ignored after
the filling time has ended.

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®DB3-F
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4.1.17 Collector emergency temperature
Collector emergency shutdown
If the adjusted collector emergency shutdown temperature
(EM) is exceeded, the controller will switch off the solar
pump (R1) in order to protect the system against overheating
(collector emergency shutdown). The factoring setting is
285 °F but it can be changed within the adjustment range of
230 ...400 °F. (flashing) is displayed.
EM:
Collector emergeny shutdown
temperature
Adjustment range: 230 ... 400°F
Factory setting: 285°F
kWh/MWh: Heat quantity
in kWh / MWh
Display channel
The flow rate as well as the reference sensors S1 (flow) and
S4 (return) are used for calculating the heat quantity sup-
plied. 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 (please pay attention to the units!).
Example: 123 kWh + 123 MWh = 123.123 kWh
CMN:
Collector minimum
temperature
Adjustment range: 210 ... 380°F
Factory setting: 40°F
4.1.18 Collector minimum limitation option
OCN:
Collector minimum limitation
Adjustment range: OFF / ON
Factory setting: OFF
The minimum collector temperature is the minimum
temperature which must be exceeded for the solar pump
(R1) to switch on.The minimum temperature prevents the
pump from being switched on too often at low collector
temperatures. If the temperature falls below the minimum
temperature, (flashing) is shown on the display.
The thermostat function works independently from the
solar operation and can be used for using surplus energy
or for backup heating.
• THO < THF
thermostat function for backup heating
• THO > THF
thermostat function for using surplus energy
When the 2nd relay output is active, is displayed.
4.1.19 Thermostat function (ARR = 2)
backup heating use of surplus energy
The accumulated heat quantity can be reset. As soon as
one of the display channels of the heat quantity is selected,
the symbol is permanently shown on the display. Press
button SET (3) for about 2 seconds in order to access the
RESET mode of the counter.The display symbol will
flash and the heat quantity value will be set to 0. In order to
finish this process, press the button to confirm.
In order to interrupt the RESET process, no button should
be pressed for about 5 seconds.The controller automatically
returns to the display mode.
THO:
Thermostat switch-on
temperature
Adjustment range:
30 ...205 °F
Factory setting: 100°F
THF:
Thermostat switch-off
temperature
Adjustment range:
30 ...205 °F
Factory setting: 110°F
°F

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®DB3-F
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For control and service work, the operating mode of the
controller can be manually adjusted. For this purpose, select
the adjustment value MAN.The following adjustments can
be carried out:
4.1.20 Operating mode
• MAN
Operating mode
OFF : relay off (flashing) +
AUTO : relay in automatic operation
ON : relay on (flashing) +
MAN/MAN1/MAN2:
Operating mode
Adjustment range:
OFF,AUTO, ON
Factory setting:AUTO
4.1.21Language(LANG)
In this channel, different languages are available.
• dE : German
•En : English
• It : Italiano
• Fr : French
LANG:
Language choice
Adjustment range:
dE, En, It, Fr
Factory setting: En
t1 O, t2 O, t3 O:
Thermostat switch-on time
Adjustment range:
00:00 ...23:45
Factory setting: 00:00
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 of time, there are 3 time frames t1 ...t3. If the func-
tion should be activated only between e.g. 6:00 and 9:00, set
t1 O to 6:00 and t1Fto 09:00.The thermostat function is
continuously activated (factory setting).
If all time frames are set to 00:00, the thermostat function
is continuously activated (factory setting).

DeltaSol
®DB3-F
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17 |
12
S1 S2 S3
3456
Te mp. Sensor
Pt1000
LNR1NR2N
201918171615
S4
78 141312
2 (1) A (115)V~
2 (1) A (115)V~
R1
R2
VBus
910
5.Troubleshooting
fuse T4A If a malfunction occurs, a message is displayed in the display
of the controller:
Operating control lamp
Warning symbol
Operating control lamp off
Check the power supply
o.k.
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).
Operating control lamp flashes red. The symbol and
the are shown.
Sensor fault. An error code instead of
a temperature is shown on the sensor
display channel.
-88.8888.8
Cable is broken.
Check the cable.
Short-circuit.
Check the cable.
Disconnected Pt1000 temperature sensors
can be checked with an ohmmeter. In the
following table, the resistance values
corresponding to different temperatures
are listed.
°F Ω°F Ω
14 961 131 1213
23 980 140 1232
32 1000 149 1252
41 1019 158 1271
50 1039 167 1290
59 1058 176 1309
68 1078 185 1328
77 1097 194 1347
86 1117 203 1366
95 1136 212 1385
104 1155 221 1404
113 1175 230 1423
122 1194 239 1442
Resistance values of the
Pt1000-sensors

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®DB3-F
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The temperature difference between the tank and the coll-
ector increases enormously during operation; the collector
circuit cannot divert the heat.
Collector circuit pump
defective ?
no yes
Heat exchanger calcified?
yes
Check / replace it
Decalify it
no
Heat exchanger blocked?
yesno
Clean it
Heat exchanger too
small?
yes
Repalce with correctly
sized one
5.1Various:
The solar circuit pump does not run although the collector
is significantly warmer than the tank.
Does the control LED
flash?
yes no
Does the pump start up
in manual operation?
yes
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.
no
Is the pump current re-
leased by the controller?
yes
Is the pump stuck?
Turn the pump shaft using a
screwdriver; now passable?
Pump is defective -
replace it
Are the controller fuses
o.k.?
Controller might be de-
fective - replace it.
no yes
no
no yes
Replace the fuses.

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®DB3-F
© RESOL 09098 deltasol_db3-f.monus.indd
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Notes

DeltaSol
®DB3-F
© RESOL 09098 deltasol_db3-f.monus.indd
|20
Distributedby: RESOL-ElektronischeRegelungenGmbH
Heiskampstraße 10
45527 Hattingen / Germany
Tel.: [phone] / 96 48 - 0
Fax: [phone] / 96 48 - 755
www.resol.de
[e-mail]
6.Accessories
Overvoltage protection device
In order to avoid overvoltage damage at collector sensors
(e.g. caused by local lightning storms), we recommend in-
stalling the overvoltage protection RESOL SP1.
Sensors
Our product range includes high-precision platinum tem-
perature sensors, flatscrew sensors, outdoor temperature
sensors, indoor temperature sensors, cylindrical clip-on
sensors and irradiation sensors, also as complete sensors
with immersion sleeves.
Flowmeter
If you wish to carry out a heat production measurement,
you need a flowmeter for measuring the flow rate in your
system.
Please note:
The design and the specifications can be changed without prior notice.
The illustrations may differ from the original product.
Reprinting/copying
This mounting- and operation manual including all parts
is copyrighted. Another use outside the copyright re-
quires 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
Important notice:
The text and drawings in this manual are correct to the
best of our knowledge. As faults can never be excluded,
please note: Your own calculations and plans, under con-
sideration of the current standards and directives should
only be basis for your projects.We do not offer a guaran-
tee 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 incor-
rect, incomplete or false information and / or any resulting
damages.