A.O. Smith BMS Interface - Page 39

Instruction manual - BMS Interface
39
Para-
meter
Register
type
Value
Type
Unit
Description
Conversion
y = first byte
x = second byte
Unit type
BFC
SGS
SGE
31
03
16 bits direct
Temperature
°C
Solar return temperature of the Q/T sensor (S4)
x/100
n.a.
Yes
Yes
32
03
16 bits direct
Temperature
°C
Temperature limit for solar heating
x/100
n.a.
Yes
Yes
33
03
16 bits direct
Contribution
Watt
Solar contribution; actual
-
n.a.
Yes
Yes
34
03
16 bits direct
Contribution
MJ
Solar contribution; last 24h
-
n.a.
Yes
Yes
35
03
16 bits direct
Contribution
GJ
Solar contribution; total
-
n.a.
Yes
Yes
36
03
16 bits direct
Flow
l/min
Actual flow through the Q/T sensor
x/10
n.a.
Yes
Yes
37
03
16 bits direct
Solar pump
%
Modulation percentage of the solar pump
x/2.55
(0…100% = 0…255)
n.a.
Yes
Yes
38
03
16 bits direct
Warning
ON/OFF
Warning Service required ON
1=On, 0=Off
Yes
Yes
Yes
39
03
16 bits direct
Day
Anti legionella purge; day
Sun (=0) … Sat (=6)
Legionella off = 7
Yes
Yes
Yes
40
03
16 bits BCD
Time
Hh:mm
Anti legionella purge; start time
y=hh, x=mm
Yes
Yes
Yes
41
03
16 bits BCD
Time
Hh:mm
Anti legionella purge; end time
y=hh, x=mm
Yes
Yes
Yes
42
03
16 bits direct
Temperature
°C
Anti legionella purge; set point
x/100
Yes
Yes
Yes
43
03
16 bits direct
Error
-
Actual error solar system (internal code)
-
n.a.
Yes
Yes
44
03
16 bits direct
Warning
ON/OFF
Warning Anode ON
1=On, 0=Off
Yes
Yes
Yes
45
03
16 bits direct
Heat input
%
Actual heat input in % of the maximum load
-
Yes
Yes
Yes
46
03
16 bits direct
Relay
-
Relay: Error activated
1=Closed, 0=Open
Yes
Yes
Yes
47
03
16 bits direct
Temperature
°C
CV setpoint
x/100
Yes
Yes
Yes
48
03
16 bits direct
Temperature
°C
CV temperature
x/100
Yes
Yes
Yes
49
03
16 bits direct
Relay
-
Relay: Heat deamand roomthermostat
1=Closed, 0=Open
Yes
Yes
Yes
50