This manual must only be used by
a qualified heating installer/service
technician. Read all instructions,
before installing. Perform steps in
the order given. Failure to comply
could result in severe personal
injury, death, or substantial property
damage.
Revision Notes ................................................. Back Cover
Hazard definitions
The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or
to important information concerning the life of the product.
DANGER
WARNING
CAUTION
CAUTION
NOTICE
2
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious
injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
avoided, may result in property damage.
NOTICE indicates special instructions on installation, operation, or maintenance that are important but not
related to personal injury or property damage.
1 Introduction
SL-DC lnstallation and Operation Manual
WARNING
WARNING
WARNING
Before starting work the installer should carefully read this Installation & Operation Manual, and
make sure all instructions contained there in are understood and observed.
The Solar controller should be mounted, operated and maintained by trained personnel only.
Personnel in the course of training are only allowed to handle the product under the supervision of
an experienced fitter.
All instructions in this Installation & Operation manual should be observed when working with
the controller. Any other application shall not comply with the regulations. The manufacturer shall
not be liable in case of incompetent use of the control. Any modifications and amendments are not
allowed for safety reasons.
ApplicationSafety Instructions
■ The Solar controller is intended for Solar heating
systems. The temperature of the water in the tank is
controlled by the temperature difference “dt” between
solar collector and tank.
■ The controller is normally used in conjunction with a
pumping station which includes a circulation pump and
a safety valve.
WARNING
Before starting work disconnect power
supply! All installation and wiring
work related to the controller must be
carried out only when de-energized.
The appliance should be connected and
commissioned by qualified personnel
only. Make sure to adhere to valid safety
regulations.
■ The controllers have been designed for use in dry
environments. For example, they are used in residential
rooms, office spaces and industrial facilities.
■ Verify that the installation complies with existing
regulations before operation to ensure proper use of the
installation.
CAUTION
WARNING
The controllers are neither splash- nor
drip-proof. Therefore, they must be
mounted in a dry place.
Do not interchange the connections of
the sensors and the 120V connections
under any circumstances! Interchanging
these connections may result in life
endangering electrical hazards or the
destruction of the appliance and the
connected sensors and other appliances.
3
1 Introduction
Main Characteristics
SL-DC lnstallation and Operation Manual
■ Large graphic display with backlight
■ Easy to use interface (4 keys with scroll menu)
■ Several languages available
■ Energy measuring with SD card interface to save the
recordable statistics (Temperatures, Power, Energy, Time
operation) and Parameters
■ Graphic view for temperature, power, energy, operating
time and temperature
■ 8 working systems with several extra functions possible
■ 5 inputs for temperature sensors (PT1000 type)
■ 1 logical input for impulse flow meter input
(for energy measurement)
Technical Characteristics
Table 1A Technical characteristics
Operating Temperature
Electrical Protection
Installation Category
Pollution Degree
Fusible
Power Supply
Maximum Power Consumption
(with all outputs activated)
■ 2 analog inputs for VFS / VPS sensor inputs
(flow, pressure and temperature sensor)
■ 2 pump outputs (standard PWM) with pump exercise
function
■ 1 extra output (to control additional heat, cooling system,
differential control or anti-stagnation function )
■ Automatic, OFF or Manual test mode
■ Sensor auto checks (short circuit and breaks)
■ Collector type choice (tube or panel)
■ Collector protection (freeze or overheat)
■ Permanent memory storage
32°F - 122°F
IP20
II
2
Max T5AH250VAC
120 VAC 60Hz
4.2A (~ 504W)
Outputs:
P1 (Main pump with standard or PWM speed regulation)
P2 (Pump with standard or PWM speed regulation, Booster pump, valve)
P3 (Extra, Additional heat, cooling, etc )
Inputs:
T1 (Collector 1)
T2 (Tank 1)
T3 (Extra sensor)
T4 (Extra sensor, Tank2, Collector2)
T5 (Collector return)
T6 (Flow meter)
GDS1 (Flow meter)
GDS2 (Pressure sensor)
Sensors delivered with the product:
2 Collectors
1 Tank
1 Extra
Software Version
Triac 1A 120 VAC.
Triac 1A 120 VAC
Relay 2A 120 VAC
PT 1000 type
PT 1000 type
PT 1000 type
PT 1000 type
PT 1000 type
Impulse type (low voltage 5V)
Analog type
(VFS)
Analog type
(VPS)
PT 1000 (1.5M 356°F)
PT 1000 (3M 221°F)
PT 1000 (3M 221°F)
Displayed during the initial start-up
Version xxxxxx
4
1 Introduction (continued)
Display
SL-DC lnstallation and Operation Manual
Figure 1-1 Display, keys
1: Simplified drawing of the installation.
- The logos of pumps turn when they are activated.
- The filled triangles on the valve logo indicate the circulation direction.
2: Solar system is working.
3: SD card storage is active.
4: Temperature of different sensors, Pumps speed indications, Power and Energy quantity stored.
1 2 3
T1
T3
T2
A
T1_ _ _°F
T2_ _ _°F
SD
T3_ _ _°F
T4_ _ _°F
P1_ _ _ %
_ _ _ BTU/h
4
_ _ _ BTU
A. Keypad description:
Figure 1-2 Keypad
Navigation key up or plus key
(+)
Navigation key down or minus key
Navigation key right
Navigation key left
(►)
(◄)
(-)
5
1 Introduction
Main Menu Display
Figure 1-3 Main menu
SL-DC lnstallation and Operation Manual
Information
Services
Settings
Operation
Operation h
Temperatures
Press (►) to enter the navigation menu. (The title of the
active menu is high lighted in black on the top of the display.
When you enter the navigation menu you can choose
another submenu by moving the selection cursor with the
keys (+) or (-), then you can enter this submenu with ( ►).
From all menus you can press (◄) to return to the previous
menu.
-
NOTICE
IMPORTANT
To prevent mistakes after installation,
all critical parameters (system and Extra
function) are not accessible after 4 hours
power on. If you want to modify these
parameters, you must unplug and plug in
the controller. No settings are lost when
unplugging, or after a power failure.
After 4 hours you can still change all
the other parameters to optimize your
system.
Not all submenus, selection, or options
discussed in this manual are available on
all systems. The figures are representative
of what the screen on the control will
look like when the described procedures
are followed.
6
SL-DC lnstallation and Operation Manual
2 Service
Languages
With (+) or (-) select the line “ENGLISH” and press ( ►) to highlight the line. Now that you can change the language with (+)
or (-), there are several choices: English, German, Dutch, Spanish, French, Italian, Portuguese, and Hungarian.
Figure 2-1 Language screen
Service---- --- -
English
Time and date
US version yes
System
Extra off
External sensor no
Protection func.
Figure 2-2 Time and Date
---
Time 6:41
Month 12
With (+) or (- ) select the line TIME and DATE and press
( ►) to enter the submenu Time and Date.
Now you can select the date and time line with (+) or
(- ), then press ( ►) to highlight the value which must
be adjusted.
NOTE: If power supply is lost, the hours will be saved
for 24 hours. After this time the clock will need to be
readjusted.
Time and Date
--- -
20 yaD
1002 raeY
Figure 2-3 U.S. version
Service---- --- -
English Time and date
US versionyes
System
Extra off
External sensor no
Protection func.
YES: °F, 12H am/pm, GPM, BTU and BTUh
NO: °C, 24H, Liter, KW and KWh
On this menu you can choose the displayed units.
7
2 Service
SL-DC lnstallation and Operation Manual
Systems
When the line is selected, press ( ►) to enter the submenu. You
have the choice between 8 systems with the possibility to add
different functions.
System 1
This is a basic system, with 1 tank, 1 pump, 1 collector array and
2 sensors. With this system you can add extra functions with 1 or
2 sensors (Booster pump, Thermostat, Cooling, Antistagnation
or Diffcontrol function).
Figure 2-4 System 1
T1
P1
The loading of the tank is authorized by the control if the
temperature difference “dt” between the collector (T1) and the
tank (T2) is greater than the value programmed for “dt”.
System 2
This is a system with 2 tanks, 1 pump, 1 valve, 1 collector array
and 3 sensors. With this system you can add an extra function
with 1 sensor (Thermostat, Cooling, Antistagnation).
T2
T1_ _ _°F
T2 _ _ _°F
P1 _ _ _ %
System
1
System 3
This is a system with 2 tanks, 2 pumps, 1 collector array and 3
sensors. With this system you can add an extra function with
1 sensor (Thermostat, Cooling, Antistagnation).
Figure 2-6 System 3
T1
T1_ _ _°F
T2 _ _ _°F
T4 _ _ _°F
P1 _ _ _ %
P2 _ _ _ %
P2P1
T2 T4
System
3
The loading of the tanks is authorized by the control if the
temperature difference “dt” between the collector (T1) and
the tanks (T2, T4) is greater than the value programmed for
“dt”. You can choose different possibilities for the priority
of the tank loading. See chapter “Priority Tank” for more
information.
System 4
This is a system with 1 tank, 1 pump, 1 valve, 2 collector
arrays with 2 different cardinal directions (East/ West) and 3
sensors. With this system you can add an extra function with
1 sensor (Thermostat, Cooling, Antistagnation).
Figure 2-7 System 4
Figure 2-5 System 2
T1
T1_ _ _°F
T2 _ _ _°F
T4 _ _ _°F
P2
P1 _ _ _ %
P1
T2 T4
System
2
The loading of the tanks is authorized if the temperature
difference “dt” between the collector (T1) and the tanks (T2,
T4) is greater than the value programmed for “dt”. You can
choose different possibilities for the priority of the tank loading.
See chapter “Priority Tank” for more information.
8
T1
T4
T1_ _ _°F
T2 _ _ _°F
P2
T4 _ _ _°F
P1 _ _ _ %
P1
T2
System
4
The loading of the tanks is authorized by the control if the
temperature difference “dt” between the collectors (T1, T4)
and the tank (T2) is greater than the value programmed
for “dt”. The valve direction of P2 is routed to the warmer
collector.
2 Service (continued)
SL-DC lnstallation and Operation Manual
System 5
This is a system with 1 tank, 2 pumps, 2 collector arrays with
2 different cardinal directions (East/ West) and 3 sensors.
With this system you can add an extra function with 1 sensor
(Thermostat, Cooling, Antistagnation).
Figure 2-8 System 5
T1T4
T1_ _ _°F
T2 _ _ _°F
T4 _ _ _°F
P1 _ _ _ %
P1P2
T2
P2 _ _ _ %
System
5
The loading of the tank (T2) is authorized by the control if the
temperature difference “dt” between the collectors (T1, T4)
and the tank is greater than the value programmed for “dt”.
The tank will be loaded with the warmer collector (T1, T4) if
parameter “P1 II P2 = no” (default setting).
The tank can be loaded from both collector fields at the same
time, if parameter “P1 II P2 = yes”. See chapter “Protection
Function”.
System 6
This is a system with 1 collector array, 1 solar tank, 1 pump,
1 valve and 4 sensors. With this system you can add an extra
function with 1 sensor (Thermostat, Cooling, Antistagnation.)
System 7
This is a system with 1 collector array, 1 solar tank, 2 pumps and
1 external heat exchanger. With this system you can add an extra
function with 1 sensor (Thermostat, Cooling, Antistagnation
and Diffcontrol function).
Figure 2-10 System 7
T1
T1_ _ _°F
T2 _ _ _°F
P1 _ _ _ %
P2 _ _ _ %
P1
T2
P2
The loading of the tank is authorized by the control if the
temperature difference “dt” between the collector (T1) and the
tank (T2) is greater than the value programmed for “dt”. You
can choose a time delay for the start up of the pump between
the heat exchanger and the tank. Default value is 1 minute to
give the heat exchanger time to heat up. See section “P2 delay”.
System
7
System 8
This is a system with 1 tank, 2 pumps, 1 collector array, 3
sensors and 1 external heat exchanger. With this system you
can add an extra function with 1 sensor (Thermostat, Cooling,
Antistagnation.)
Figure 2-11 System 8
Figure 2-9 System 6
T1
T1_ _ _°F
T2 _ _ _°F
T3 _ _ _°F
T4 _ _ _°F
P1 _ _ _ %
System
P1
T3
T2
T4
P2
6
The loading of the tank (T2) is authorized by the control if the
temperature difference “dt” between the collectors (T1) and
the tank (T2) is greater than the value programmed for “dt”. If
the “dt” between tank (T3) and the space heating return (T4)
is sufficient, the space heating return will be preheated through
tank 1. This saves energy at the external heating source.
T1
T1_ _ _°F
T2 _ _ _°F
T4 _ _ _°F
P1 _ _ _ %
P1
T4
P2
P1 starts if the temperature difference “dt” between the collector
(T1) and tank (T2) is sufficient.
The loading of the tank with P2 is authorized by the control if
the temperature difference “dt” between the heat exchanger (T4)
and the tank (T2) is greater than the value programmed for “dt”.
The operation of the P1 & P2 pumps is independent.
T2
P2 _ _ _ %
System
8
9
2 Service
SL-DC lnstallation and Operation Manual
Extras
When the line is selected, press ( ►) to highlight the line.
You have the choice between 4 extra functions . The choices
are not the same with all systems, see the specific system
details for available extras.
Figure 2-12 Extras menu
Service---- --- -
English Time and date
System
Extra off
External sensor no
Protection func.
Sensor options
Thermostat Function
This function is generally used to control an additional heat
source to load up your primary solar tank in case solar energy
is lacking. (See the Extra Function section.)
Cooling Function
The cooling function is generally used for cooling down
the primary solar tank at time of high solar radiation. With
this function you could dissipate excess energy to another
heat zone. (Swimming pool or other basins for example, as
illustrated in FIG. 2-14 below.) ( See Extra Function section.)
Figure 2-14 Function used to warm basin
T1
Extra Function used to
control the pump to
warm up another basin.
T3
P1
T2
P3
Suggestions:
- Pump controls for Fuel or Gas burner. . .
- Electrical element inside the solar tank. (Important:
in this case you must connect a relay for switching
the output.) (See FIG. 2-13 below.)
Figure 2-13 Extra function and external burner
T1
Extra Function to control
the pump coupled with
an external burner.
T3
P1
T2
P3
10
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