BA Systems—Petershvilevej 1—DK-3200 Helsinge—http://www.basystems.dk
45
BAS 918S/929S
Manual
Scheme 4, description continued:
Hot water heater:
Basic
Hot water is supplied from a Hot water tank. Return limiter control is supported.
.
Regulation
A temperature sensor inputs the value for regulating a motor valve in the return flow.
Regulation is from 0 - 100%.
Hot Water Tank temperature regulation values are given by a Day-setpoint and as a Night-
setpoint. Each controlled by a timer. By default the day value is 55°C and night value 45°C.
Default timer setting activates Day-setpoint only. Legionella drive is by default set to Sunday
from 01.00 until 70°C Tank temperature is reached or until 03.00 o’clock.
All setpoints/timers may be adjusted in the controlling scheme parameters.
Circulation pump
The Hot water circulation pump is controlled by a real time clock based timer for start / stop.
