SR981S/SR982S operation manual of solar pump station
Page 69 of 85
Note:
if the tank priority is set as Su1 or Su2, then the corresponding tank will be heated to
its maximum temperature directly, when the priority tank reaches its maximum temperature,
just start to heat the second tank. If
the priority tank’s temperature drops again below its
maximum temperature, then when its switch-on condition is met, controller switches to
heat priority tank in time, and controller stops to heat the second priority tank. If its
switch-on condition
isn’t met, then controller stops heating.
8.5.12 INTV pump Intermission function
Description:
This function is useful when collector sensor isn’t installed on collector (sensor installed on
the outlet pipeline of collector). When circuit pump is in standby status (since switch-on DT
is not reached), in order to measure the actual temperature of collector, solar pump is
triggered to run for 15 seconds (it is set by IRUN) in every 30 minutes (it is set by ISTP), as
the result, the hot water inside the collector can flow to the pipeline, where sensor is
mounted, and the actual temperature of collector can be measured and controller can
monitor whether the temperature difference reaches the switch-on condition. This function
is only in action during a preset time section, default time section is from 07:00~18:00.
Setup steps:
To access submenu INTV, “INTV” displays on the screen.
►Press “SET” button, parameter “INTV OFF” displays
on the screen
►Repress “SET” button, “OFF” blinks on the screen,
default is “OFF”
►Press “SET” button to activate this function, “INTV ON”
shows on the screen
► Press “ESC” button to exit the menu or wait for 20 seconds to exit, parameters are
saved automatically.
8.5.12.1 IRUN Pump interval run-on time
Setup steps:
To select submenu IRUN, “IRUN 15” displays on the
