SR961s/SR962s Solar Water Heater Working Station
Intelligent and Efficient Solar Water Heater Control
The SR961s/SR962s solar water heater working station utilizes an efficient design and intelligent controller for high performance control of your solar water heater system. The station comes complete with a pressure gauge, charging/draining ports which utilize a check valve to ensure one way flow during charging/operation, a connection for an expansion tank, efficient and reliable wilo pump (made in Germany), insulation cover and a sleek metal enclosure.
Enjoy years of operation with efficient control of the circulation pump. This unit consumes less than 4 watts during operation. (The national average cost to operate this unit is no more than 30 cents a month!) Digital speed control of the pump allows for the most efficient use of your pump's electrical power. When high pumping speeds are needed, it can circulate quickly to obtain heat. When heating is average, the pump levels out to a nice slow speed for efficient and even operation.
The SR962s model has a two pipe system. The 2nd pipe is for the return from the solar collector, which has an additional sensor for detecting the temperature of the fluid returning from the collector.
Download the SR961s/SR962s Manual here
SR961s/SR962s Technical Data |
Height |
420mm (16.5") |
Width |
280mm (11") |
Thickness |
140mm (5.5") |
Distance between flow/return |
160mm (6.2") |
Max Pressure |
10 Bar (145 psi) |
Max Temperature |
130°C (266°F) |
Pipe Connections |
2 x G1/2 (SR961s)
4 x G1/2 (SR962s) |
Safety Valve Pressure |
6 Bar (87psi) |
Connector for Expansion Tank |
G1/2, male |
Type of Pump |
Wilo RS 15/16 |
Max Flow Rate |
2.5 t/h (11 gpm) |
*Max Pump Head |
5.5m (18 ft) |
Max Operation Pressure |
10 Bar (145 psi) |
Power Supply |
110v AC 50/60 Hz or 220v AC 50/60Hz |
Ball Valves |
G1/2 |
Flow Meter |
0.1~20 L/min |
Flushing Connections |
G1/2 |
Thermal Insulation |
EPS/EPP |
Front Cover Material |
st14 |
Pipe Sensor Types |
NTC10 K, B=3950 |
*Much more head can be obtained in a closed loop, especially with fluid pressure built into the system
Parameters and Functions |
Power Consumption |
<4 watts |
Accuracy of Temperature Measuring |
±2°C (3.6°F) |
Collector Measuring Range |
-10~200°C (14~391°F) |
Tank Measuring Range |
0-100°C (32~212°F) |
Pump Handling Power |
<600 watts |
Electrical Heater Power Handling |
<1500 watts |
Temperature Sensors |
1 x pt1000 (collector sensor)
2 x NTC10K,B3950 (tank/pipe sensors) |
Permissible Ambient Temperature |
-10~50°C (14~122°F) |
Water Proof Grade |
IP43 |
dt |
Temperature Difference Operation |
THET |
Timed Heating |
EM |
Emergency Collector Temperature Cutoff (max collector safety shut off) |
CMX |
Low Temperature Protection of Collector |
CFR |
Frost Protection of Collector |
SMX |
Maximum Temperature of the Tank |
REC |
Tank Recooling Temperature |
DVWG |
Anti-Legionella Function (Bacteria Killing) |
CIRC |
Activate and deactive DHW hot water circulation pump |
nMIN |
Speed adjusting of circulation pump |
QMax |
Max FLow Rate Setting |
AHO/AHF |
Tank Thermostat Function |
Other Functions |
Holiday Function (cools tank over night) |
Manual Mode |
Password Protection |
Recovery to Factory Settings |
Manual Heating |
Temperature Query Function |
Memory Protection |
Screen Protection |
Trouble Protection |
SR961s/SR962s Part List |
1 |
Front protectin cover |
2 |
Operation panel of controller |
3 |
front insulation cover |
4 |
Air seperator with manual release valve (SR962s only) |
5 |
G1/2 Connection point to 2nd pipe (SR962s only) |
6 |
Upper mounting hole |
7 |
Connection to collector, male G1/2 |
8 |
Safety Pressure Valve, 6 Bar (87 psi) |
9 |
Pressure Gauge, 0-10 Bar (0-145 psi) |
10 |
Expansion tank connection, Male G1/2 Thread |
11 |
Flow temperature sensor, NTC10k,B=3950 |
12 |
Check Valve |
13 |
Digital Flow Meter |
14 |
Solar circulation pump (Wilo) |
15 |
Liquid filling connection (1/2") |
16 |
Connection box of controller |
17 |
Bottom mounting hole |
18 |
Connection from tank, male G1/2 |
19 |
Connection to tank, male G1/2 (SR962s only) |
20 |
Return pipe sensor, NTC10k, B=3950 (SR962s only) |
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SR962s Double Pipe Working Station
inside of SR962s
