The SR961 is  Industry's standard for solar controllers, due to the differential thermal controls the processors is capable of.


The SR961 pump system is our premium pump system that gives you everything you need and more. This pump system can do much more then only controlling your solar loop.

Features:

• Differential controller
• Heat dump
• Frost protection
• Tank to tank recirculation
• Starting auxiliary heating systems
• Starting auxiliary pumps
• + much more!

Includes:

• 1 SR961 Pump System
• 1 Black UV Protected Sensor
• 2 Grey Sensors

Technical Data  
1. Suitable Fluids Heating water to VDI 2035 Water/glycol mixtures: max. Mixing ratio 1:1 Hydrate coercions required for mixing ratio above 20%
2.Performance Speed range: 1100-2200pm Manual 3-speed control Fluid temperature range:-10°C-+110°C Max. Working pressure: 10 bars   3.Ambient Temperature Permissible up to:40°C  
4.Power Mains power: 1~230V, 50Hz  
5.Motor Degree of protection:IP42 Insulation class: 1 Interference emission: EN 50081-1 Interference resistance: EN 50082-2  
6.Construction Materials Pump body: cast iron Impeller: GF-PP Shaft: stainless steel Bearings: graphite  
Scope of supply Pump incl.2 union washers, packing and O&M manual 
Accessories Union connector fittings, thermal insulation  
Mounting Positions Pump shaft in the horizontal plane, terminal box optionally 3,6,9 or 12o’clock  
Pump Equipment Screwed end single head pump Manual 3-speed control Non-overloading single-phase motor Optional left or right cable entry Special design versions RS25/4 and RS25/6 Bronze body, 180mm port-to-port Cast iron body 130 mm port-to-port

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 DC12V   screen / 110v
Power consumption:  < 3W   
Accuracy of temperature:  within2 centigrade measuring    
Range  of  collector:  -10-220 centigrade  
temperature  measuring   Range  of  tank: 0-110 centigrade
Suitable  power  of  pump:   three  pumps, : no more than  600W   
power:  1500W element max
Inputs: One Pt1000  sensor  (: no more than500 centigrade) for  collector  (silicon  cable: no more than 280 centigrade),                Two NTC10K,  B3950  sensor  : no more than  135 centigrade  for  tank,   PVC  cable 
max105 centigrade
Outputs : Three relays,  for  circulation  pumps or  3-way  electromagnetic  valveOne  relay  for  electrical  heater   
Ambient  temperature: -10-50  centigrade  
Water  proof  grade : IP40  

Main Functions

1.Main  menu  DT  O  &  DT  F  Temperature  difference  function
2.Main  menu-THET  timing  heating
3.TEMP  Temperature  main  menu
4.EM  Emergency  collector  temperature
(emergency  switch-off  temperature  of  collector)
5.CMX  Maximum  limited  collector  temperature  (collector  cooling  function)
6.CMN  low  temperature  protection  of  collector
7.CFR  frost  protection  of  collector
8.SMX  Maximum  temperature  of  tank
9.REC  Tank  re-cooling  function
10.Celsius  and  Fahrenheit  temperature  transferring
11.FUN  Auxiliary  function
12.DVWG  Anti-bacteria function
13.CIRC  Temperature  controlled  hot  water  circulation  pump
14.nMIN  Solar  circulation  pump  speed  adjusting  (RPM  speed  controlling)(Only  available  on  SR868C8Q)
15.OHQM  Thermal  energy  measuring  (Only  available  on  SR868C8Q)
16.INTV  Pump  interval  function      (Only  available  on  SR868C8Q)
17.BYPR  High  temperature  by-pass  function
(tank  temperature  automatically  adjusting)
18.  HND  Manual  mode
19.PASS  Password  setting
20.LOAD  Recovery  to  factory  setting
21.ON/OFF  button
22.Holiday  function
23.Manual  heating
24.Temperature  query  function
25.Memory  Protection
26.Anti-dry  heating  Protection
27.Screen  protection

Very inexpensive, call for details

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