Zhejiang SP228 User manual

Solar working station series for solar water heating control system
1
The SP series solar working station is suitable for split pressurized
solar hot water heating system. By connecting with solar collector and
pressurized tank, it makes the solar energy turn to heat energy in high
efficiency. It is the heart for solar hot water heating system.
Safety regulations
♦Installation, commissioning and maintenance of the device may only be performed by
professional personal.
♦All operations that require opening the device are only to be conducted cleared from the power
supply. All safety regulations for working on the power supply are valid.
♦The device must not be installed in rooms where easily inflammable material (e.g. gas or oil)
mixtures are present or may occur.
♦Before connecting the work station, make sure that the collector, tank and temperature sensor
are connected well.
♦Before connecting the work station, make sure that the energy supply matches the specifications
of the device. Protect the solar station against overloading and short-circuiting.
♦All devices connected to the work station must conform to the technical specifications of the
device.
♦As soon as it becomes evident that safe operation is no longer possible, please immediately take
the device out of operation.
♦Without lightning rod, please don’t use this device during a thunderstorm.
♦Must be installed vertically!
Liability waiver
♦Improper installation or operation can cause damages to material and persons. The
manufacturer cannot monitor the compliance with these instructions or the circumstances and
methods used for installation, operation, utilization and maintenance of this device. Damage by
mishandling or improper installation on costumer site is immediately leading to warranty
exclusion.
♦As faults can never be excluded, we don’t offer a guarantee for the completeness of the drawings
and texts of this manual, they only represent some examples. They can only be used on own risk.
No liability is assumed for incorrect, incomplete or false information and the resulting damages.
♦The manufacturer preserves the right to put changes to product, technical date or
installation and operation instructions without prior notice.

2
. New SPⅠ228 solar working station
Safety valve: Protect the system against over
pressure, the system respond pressure is 6bar
Pressure gauge: Display system pressure,
Arrange: 2-10bar
WILO pump: WILO Star RS 15/6
RS25/6 is optional. (100~120V or 200~240V)
Input and output ports: use aviation plugs
Input signal:
PT1000 sensor (Black for collector), -99～199℃
NTC10K sensor (Gray for tank), 0～99℃
Accuracy: ±1℃
Output signal:
Auxi. heating (Max. Load: 12A)
Relay (Max. Load: 1.5A)
Industrial touch screen with resistance;
72 solar hot water systems;
Operate with fingertip or touch control pen;
With high sense and stably
Check valve: Prevent medium flow back
Flow sensor:
Measure flow rate, used in Calorimetry function
Temp. sensor:
Installed inside the work station, measure pipeline
temp. Used in Calorimetry function as T6, T7.
The airstop is used to release the air from the
medium in the solar hot water system. The air
precipitated from the medium gathers in the upper
area of the manual valve, and releases through it.
After the air releases, please check the system
pressure. If the pressure decreases, add it to the
normal statue.
Solar working station series for solar water heating control system

3
Special filling valve for solar hot water system:
When filling the medium, close the button ①,
and open the button ②③at the same time. Fill
the medium from the left side. When there is
medium venting from the right side evenly, it
means the medium has been filled up. Then
close the button ②③, and open the button ①.
Ⅱ. System diagram (72 solar hot water system)
System 1 System 2 System 3 System 4
System 5 System 6 System 7 System 8
System 9 System 10 System 11 System 12
System 13 System 14 System 15 System 16
System 17 System 18 System 19 System 20
System 21 System 22 System 23 System 24
Solar working station series for solar water heating control system

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System 25 System 26 System 27 System 28
System 29 System 30 System 31 System 32
System 33 System 34 System 35 System 36
System 37 System 38 System 39 System 40
System 41 System 42 System43 System 44
System 45 System 46 System 47 System 48
System 49 System 50 System 51 System 52
System 53 System 54 System 55 System 56
Solar working station series for solar water heating control system

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System 57 System 58 System 59 System 60
System 61 System 62 System 63 System 64
System 65 System 66 System 67 System 68
System 69 System 70 System 71 System 72
（Please look view the detail system description on operation board.）
Solar working station series for solar water heating control system

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Ⅲ.Items & Functions
Diagram 1: Items
Input \ Current \ Voltage \ Consume \ Saving
Auxiliary heater working statue
System
Statue
Solar heat collecting working statue
Language Choose the current language
Clock setting Date and time
Network setting Network data
Reference temp.
setting Auxiliary heater temp. \ Heat collecting temp. \ Swimming pool temp.
Setting
Assistant
function Holiday function\Auxi.H\Solar heat collecting\Hot water endcirculate
User
Setting
Touch
Adjustment
Adjustthe positionof touchboard
Select system no.
Select the previous system
Select the next system
System
Select
Confirm the current system
Temp.difference
circulate Set switch-on andswitch-off temp. difference
Pump speed
adjustment Set Pump speed
Aux.H Set auxiliary heater temp. and time periods
Solar heat
collecting Set heat collecting temp. and time periods
Hot water end
circulate Set hot water endtemp. and time periods
System protect Collector frostprotect \ System overheat protect\
Tank high temp. protect \ Swimming pool temp.
System
Setting
Assistant function
Anti-bacteria function \ Priority\ Holiday function
\ Media SHC \ Media density \ System password\
Reset function
Expert
Setting
Default
password
(123456)
System
Debug Switch-on or switch-off outputs handily; Check inputs\outputs\flow rate for current system
(The Expert Setting only operated by professional person)
Solar working station series for solar water heating control system

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Diagram 2: Functions
Function Default valve Arrange Description
8℃5-20℃Switch-on temp. difference
Temp. difference
circulation 4℃2-12℃Switch-off temp. difference
60℃45-75℃Reference temp. for Auxi.H
Auxiliary heating 00:00-00:00
00:00-00:00
17:00-22:00 00:00-23:50
Working time periods for Auxi.H
35℃15-60℃Reference temp. for solar heat collect
Solar heat collect 00:00-23:59
00:00-00:00
00:00-00:00 00:00-23:59 Working time periods for solar
heat collect
35℃15-60℃Reference temp. for hot water end
circulation
Hot water end
circulation 00:00-23:59
00:00-00:00
00:00-00:00 00:00-23:59 Working time periods for hot water end
circulation
Collector frost
protection 3℃2-8℃When the collector temp. is lower than the
desired frost protection temp., this function
will be activated.
Tank high temp.
protection 80℃50-95℃When the storage reaches the desired
overheating protection temp., temp.
difference circulation will be switched off.
System overheat
protection 130℃120-160℃When the collector is overheating, the
system switches off emergently avoiding
to be destroyed.
Anti-bacteria Open When the collector temp. is lower than the
desired frost protection temp., this function
will be activated.
Holiday function Close This function will be activated when a holiday is planed or when there is no need to
use hotwater for a long time.
Factory default All the desired values (except Time) can be
set back to factory default.
Solar working station series for solar water heating control system

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Auxiliary Heating
The system is supported with a default program which can
be customized to meet your individual needs. You can
create a timer program with up to three time periods to
heat the water to a desired value. During the three preset
time periods, auxiliary heater starts working, when the
water temp. in top part of tank (T3) is below preset
turning-on temp.. When it is not in these three periods,
even the tank temp. is lower than the preset temp., the
auxiliary heater won’t work.
Note: In the system diagram, “RH” stands for the auxiliary
heater device: Electric element, Gas stove, boiler, or other
heating source.
Calorimetry
This function is suitable for all the systems. It calculates
four values on saved heat: the current day, the current
month, the current year and the total saved value. By
measuring the temp. (T6&T7) and flow rate of medium,
transfer them to heat amount through the formula:
Q=CMδt
Take system 1 as example: The temp. sensor T7 andflow
sensor have been installed inside the working station. The
user needs to install the sensor T ( the gray NTC sensor
with screw) in the position located in the left system
diagram.
Heat bypass
This function can lower the system temp. by connecting a
radiator when the tank temps. is too high. The install
position is located in the left system diagram.
Leakage protect
The working station checks the voltage and current on the
system working statue automatically.
“Load is leakage,shut off power and check it.”
When there is leakage for loadings, the system stops
working immediately. The words (as the left side) shows
on the System Statue page. Meanwhile, all the output
stops. The user must check it and solve the problem as
soon as possible, to prevent the system overheated.
(1)
(2)
Solar working station series for solar water heating control system

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Connection
1：T1 temp. sensor 7：Auxi.Heating output
2：T0 temp. sensor 8：Main Power port
3：T2 temp. sensor 9：RJ45 port
4：T3 temp. sensor 10：R2 output
5：T4 temp. sensor 11：R3 output
6：T5 temp. sensor
Connect auxiliary heater wire if available:
Brown cable for the “L” line
Blue cable for “N” line
Yellow-green cable for the ground wire “G”;.
. Fault messageⅣ
Familiar problem Possible reason Solution
Pump works but no flow rate
displays. There is probably too much air in the pipeline. Replenish heat medium liquid and exhaust the air.
Storage reaches max. temp. When storage temperature
drops, pump starts working.
The solar system has temp.
difference but pump doesn’t
work. Solar collector reaches its max.
temp.. When collector temperature drops, pump starts working.
Auxiliary heater is forbidden. Activate it manually.
Auxiliary heater doesn’t work. Temperature sensor has
broken circuit or short circuit. Check sensor connection and make the wiring again.
Auxiliary heater still operates
at 23:00. Anti-bacteria function starts up.
It’s normal.
System pressure drops. There is air leakage in solar
system. Check the pipeline and exhaust the air.
Pump works but system
doesn’t have temp. difference,
meanwhile auxiliary heater
function starts up.
Frost protection function is
activated. After collector temperature rises, pump stops working.
The sensor display “Open” Sensor wiring is not connected
well Check resistance value, replace sensor if necessary.
The sensor display “Short” Sensor wiring is short circuit Check resistance value,
replace sensor if necessary.
Note: Apotentially defective sensor can be checked using an ohmmeter. To do this, the sensor
must be disconnected. Its resistance value can be compared with the figures below, small
deviation is acceptable.
PT1000 resistance value
12：R4 output
Solar working station series for solar water heating control system

×293×140mm1 Main 435
10
℃ 0 10 20 30 40 50 60 70 80 90 100 110 120
Ω 1000 1039 1077 1116 1155 1194 1232 1270 1309 1347 1385 1422 1460
NTC 10K B=3950 resistance value
℃
0 10 20 30 40 50 60 70 80 90 100 110 120
Ω 33620 20174 12535 8037 5301 3588 2486 1759 1270 933 697 529 407
. Packing listⅤ
No. Name Specification Quantity
1
2 PT1000 sensor 15m 2
3 NTC sensor 3m 4
4 Power wire 1.5 ㎡1
5 Aux.H wire 1.5 ㎡1
6 Output wire 0.5 3
7 Filling valve 3/4 1
8 Screws 4
9 Manual 1
㎡
Solar working station series for solar water heating control system