Steca TR-A501T-U - Page 33

33
742.110 | 14.50
EN
V
F
unc
SET
Type 2: Flow rate of the pulse
water meter in litres/pulse; see
the pulse water meter data
sheet.
1.0 gal...10.0 gal,
1 l, 10 l, 25 l
–L
(no flow
rate value
selected)
Glycol proportion 0 % 60 % 40 %
Supply sensor input (warm) 1 ... 5 –
Return sensor input (cold) 1 ... 5 –
T
T
F
unc
SET
on
CO
2
display on, oFF
oFF
T
T
F
unc
SET
lbs
CO2
/kWh
therm
0.100 2.500 1.918
2)
1)
tyP 1: Calculation of the flow rate from the pump speed. To do this, the displayed flow rate values are entered
at two measuring points (pump speed min. and max.).
tyP 2: Determining the flow rate using a pulse water meter. The flow rate of the pulse water meter in
litres/impulse is entered.
2)
Source: Hawaiian Electric Co., Inc. HECO Residential Rebate Program, Solar water heating system information
sheet (2007): 1.918 Ibs
CO2
/kWh
therm
.
10.3.9 Circulation
Switches a circulation pump on and off on a temperature and/or time
controlled basis. The pump must be connected to output R1.
Temperature control: If the temperature in the circulation return falls
below the T
on
value, then the circulation pump is switched on until the
T
off
temperature is reached.
Time control: The circulation pump is switched on when the current
time lies within one of 3 configurable time windows.
Temperature and time control: The circulation pump is switched on
when the switch-on conditions for the temperature and time control are
satisfied.
Note
Install the circulation sensor at least 1.5 m (60 inch) away from the
storage tank to avoid false measurements due to heat conduction of the
pipes.