Sunhome Tech SR1568 User Manual

Operation manual of solar controller SR1568
Page 20 of 87
System 6: Solar system with 1 collector field, 1 tank, loading the heating return
Description:
The controller calculates the temperature
difference between collector sensor T1 and
tank base sensor T2. If the difference is larger
than or identical to the adjusted switch-on
temperature difference, then solar circulation
pump (R1) will be switched on, and tank will be
loaded until the switch-off temperature
difference or the maximum tank temperature is
reached.
Another temperature difference between heat
source T4 and heating return T5 can be used
to control the 3-ways valve R4 to preheat the
return water of heating system by the solar
system.
Sensor
ports
Description
Relay
outputs
Description
T0
Selectable sensor, free
R1
Solar circulation pump
T1
Temperature of collector
R4
3-ways valve for preheating the
heating return water
T2
Temperature of tank base
R2
Available selectable functions:
1.CIRC（DHW circulation）
2.OHDP（Thermal transfer）
3.SFB（Solid fuel boiler）
4.BYPR （ Circulation by-pass ）
5.TIMER（Timer function）
6.OPARR（Parallel relay）
T3
Temperature of tank upper
(selectable)
R3
T4
Temperature of tank upper for
loading the heating return
water
R5
T5
Temperature of heating return
pipe
HR
Back-up heating
T6
Temperature for thermal
energy measurement
( selectable)

Sunhome Tech SR1568 Specifications

General

Brand	Sunhome Tech
Model	SR1568
Category	Controller
Language	English