Operation manual of solar water controller SR530C8/SR530C8Q
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4.3 Main menu DT O & DT F Temperature difference function
Description:
Solar circuit pump R1 is triggered by the temperature difference function, so long as the
temperature difference between collector and tank reaches the switch-on DT, solar
circuit pump is triggered.
For example: the switch-on DT is 8
o
C, switch-off DT is 4
o
C, if the temperature in the
bottom part of tank is 20
o
C, then just when collector temperature rises up to 28
o
C,
pump is triggered, and when collector temperature drops to 24
o
C, pump is ceased.
Note: the switch-on/off DT of 8
o
C and 4
o
C are standard system setting according to
many years’ experience, only in special application cases it needs to be changed, (e.g
far distance heat transferring), normally it is recommend to use default set. Switch-on
and switch-off DT are alternating set. To avoid mistake the minimum difference
between two temperature differences (ΔTon –ΔToff) is set as 2
o
C.
Setup the switch-on temperature difference:
Under standby status, access main menu DT O,
►Press “SET” button, to access settings program of DT O, “DT O 08
℃
” displays on
screen, “08
℃
” blinks, the switch-on temperature difference can be set.
►Press “+”“-” button, to adjust the value of switch-on DT, adjustable range
(OFF+2
℃）～
20
℃，
factory setting is 8
℃
►Press “ESC” button to exit this setting,
parameter is saved automatically.
Setup the switch-off temperature difference:
Under standby status, access main menu DT F
►Press “SET” button, to access settings program of DT F, “DT F 04
℃
” displays on
screen, “04
℃
” blinks, the switch-off temperature difference can be set.
►Press “+”“-” button to adjust the value of switch-off DT, adjustable range 0
℃～
（
ON-2
℃），
factory set is 4
℃
.
►Press “ESC” to exit menu, or wait for 20
seconds to exit automatically, the setup
parameters are saved automatically.
