SR501 Solar Controller For Non Pressurized Solar Water Heater Controlling System

SR501 Solar Controller for Non Pressurized Solar Water Heater Controlling System

Main Technical data:

1 Dimension: 210 mm x 145mm x 40mm
2 Self power consumption: <3W
3 Measuring accuracy of temperature: ±2℃
4 Temperature range of measurement: 0～99℃
5 Maximum power of controlled pump: ≤600W
6 Power of accompanied electrical heating wire: ≤800W
7 Power of auxiliary electrical booster ≤2000W ( standard collocation),
≤3000W (not standard selection available )
8 Electromagnetic valve parameter: DC 12V AC 220V

pressurized valve and un-pressurized valve are available for selection
※ operation pressure of pressurized valve: 0.02Mpa ~ 0.8Mpa
suitable for providing water directly
※operation pressure of un-pressurized valve: 0.0Mpa
connected with water tank or low pressure water providing

Main Functions:

1, Time display
2, Water temperature display
3, Water level display
4, Auto mode
5, Water level pre-setup
6, Manual water loading
7, Temperature controlled water loading
8, Timing water loading
9, Water loading when tank is lack of water
10, Compulsive water loading
11, Increasing Water pressure during water is loaded.
12, Manual heating
13, Timing heating
14, Hot water circulation
15, Hot water pipe insulation
16, Low pressure protection
17, Collector tube protection
18, Memory protection when power is failure

Terminal layout of controller for electrical heater of 1500W

• FU1: the fuse of controller, AC250V/2A
• Power input L, N: 10A, for power connection,

L: live wire, N: zero wire, protective ground wire, please connect the ground reliably.

• Output ports
- HR: Electromagnetic relays, designed for on/off control of back-up heating device,

Max. Current: 10A ( @AC230V, for 1500W electrical heater, @110VAC, for 750W electrical heater)
- P1: designed for anti-freezing heating cables, electromagnetic relay, max. power is 500W.
- R1:designed for the solenoid valve of water filling, output power is DC12V,

wire connection is not positive and negative difference.

- R2: designed for the electric tracing belt, electromagnetic relay, maximum current is 2A.

•  Input ports
- Sensor of water temperature and water level of the water tank(B03):
 Port 1: connect red wire (+12V)
 Port 2: connect white wire (COM)
 Port 3: connect black wire (GND)

- T1: for NTC10K, B=3950, ≤135oC temperature sensor (PVC cable ≤105oC),

designed for DHW circulation TCYC or AH function (optional).

- T2: for NTC10K, B=3950, ≤135oC sensor (PVC cable ≤105oC),

designed for pipe anti-freezing function (optional).

Note:

T1, T2 temperature sensors are not included in the standard parts of delivery,

which should be purchased separately.

Terminal layout of controller for electrical heater of 3000W

• Power input N, L: 20A, for power connection,

L: live wire, N: zero wire, protective ground wire, please use 2mm² cable to connect the ground reliably.

• Output ports
- HR: Electromagnetic relays, designed for on/off control of back-up
heating device, Max. Current: 16A ( @AC230V, for <=3000W electrical heater, @110VAC, for 1500W electrical heater)
- P1: electromagnetic relay, max. power is 200W.
- R1:designed for the solenoid valve of water filling, output power is
DC12V, wire connection is not positive and negative difference.
- R2: electromagnetic relay, designed for the electric tracing belt,
maximum current is 2A.

• Input ports
- Sensor of water temperature and water level of the water tank(B03):
 Port 1: connect red wire (+12V)
 Port 2: connect white wire (COM)
 Port 3: connect black wire (GND)
- T1: for NTC10K, B=3950, ≤135oC temperature sensor (PVC cable ≤105oC),
designed for DHW circulation TCYC or AH function (optional)
- T2: for NTC10K, B=3950, ≤135oC sensor (PVC cable ≤105oC), designed
for pipe anti-freezing function (optional)

Note:
1) SR501-3KW has no remote display function.
2) T1, T2 temperature sensors are not included in the standard parts of
delivery, which should be purchased separately.

Warning

With Auxiliary electrical heating, the user must install the leakage protector.

Advice regarding the installation of temperature sensors
T1, T2 sensor cables carry low voltage, and to avoid inductive effects,

must not be laid close to 230 Volt or 400 Volt cables (minimum separation of 100mm).

T1, T2 sensor cables may be extended to a maximum length of cable. 100 meter,

when cable’s length is up to 50m, and then 0.75mm2 cable should be used.

When cable’s length is up to 100m, and then 1.5mm2 cables should be used.

Installation of solenoid valve

 Flushing pipe and cleaning pipe before mounting the solenoid valve.
 If water is provided by water tower, to avoid no water filling or water flow rate is too low at solenoid valve,

please select the solenoid valve which pressure is matched to the hydraulic pressure got from water tower.

 Check whether the required voltage labelled on the type plate of solenoid valve

is same to the voltage of power output of controller, check whether the filter of solenoid valve is completed,

whether the body of valve has no damage.

And during installation please pay attention to the water flow and return of solenoid valve,

side with filter is the water input, water flow direction and arrow signal on the body of solenoid valve

should be aligned in same direction.

 Solenoid valve should be indoor installed at the place where is easy for maintenance, 

or at the area where no more connected loss happened. To keep a long lifetime of solenoid valve,

please pay attention toanti-frost, sun protection,

and prevent broken damage from freezing or aging of body of solenoid valve.

 It is prohibited to use a wrench worked on the coil wire and plastic parts,

to ensure no damaged during installation and no torsion effect positioned on the solenoid valve,

it is not allowed to install valve compulsively when tow connectors are not aligned.

 Two-cores wire is used for connection with solenoid valve, if wire needs to be lengthened,

please select cable of 1.0mm2.

 To easy clean the filter,

water inlet pipe connected to the solenoid valve should be a kind of soft pipe or pipe is easily dismounted.

Note:

one-way check valve integrated into the solenoid valve, so no one-way valve needs to be installed.

Installation

This controller can only be installed in the place having an adequate level of protection.
► Choosing a suitable site
► Drilling the upper fixing hole ①
► Screwing on the screw
► Taking away the cover plate
► Hanging the bottom plate on the fixing hole ①
► Marking the position of bottom fixing hole ②
► Taking away the bottom plate
► Drilling the hole ②
► Re-hanging the bottom plate on screw ①
► Fixing bottom plate with screw ②