SR1128 operation manual
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5.5.2 MEDT Type of heat transfer liquid
MEDT: type of heat transfer liquid, adjustable range (0003)ˈ factory set ˖01
Type of heat transfer liquid:
00˖Water
01˖Propylene glycol
02˖Glycol
03˖Tyfocor LS/G-LS
Setup steps:
To select submenu MEDT, “MEDT 01” displays on screen.
►Press “SET” button, parameter “01” blinks on the screen
►Press “+” “-” button, to adjust type of heat transfer liquid, adjustable range (0003˅
► Press “ESC” button to exit the menu or wait for 20 seconds to exit automatically,
parameters are saved automatically.
5.5.3 MED% Concentration of heat transfer liquid
MED% Concentration of heat transfer liquid (volume percentage %), depending on the type
of heat transfer liquid, adjustable range (20 ~70), factory set 40
Setup steps:
To select submenu MED%, “MED% 40” displays on screen.
►Press “SET” button, parameter “40” blinks on the
screen
►Press “+” “-” button to adjust concentration,
adjustable range (2070˅
► Press “
ESC” button to exit the menu or wait for 20
seconds to exit automatically, parameters are saved automatically.
Note: When MEDT is set as 00 or 03, then its MED% concentration doesn’t appear.
5.6 INTV Pump interval function
Description:
This function is useful when collector sensor isn’t installed on collector (sensor installed on
the outlet pipe of collector). In order to measure the actual temperature of collector, when
circuit pump is in standby, every 30 minutes (this parameter is set at ISTP menu), solar
pump is triggered to run for 15 seconds (this is set at the IRUN menu), so that the hot water
inside the collector can flow into the pipe, where sensor is mounted, as the result, the actual
temperature of collector is measured. It is unnecessary to activate this function in all time,
you can use it within a preset time section, default set time is 07:00 ~18:00; this time can set
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