STULZ E
2
SERIES CONTROLLER FOR PERIMETER SYSTEMS OPERATION MANUAL
58
Group Alarms 17 to 24
No. Description
Bit
mask Default
17 Fan alarm 1 1 0
18 Fan alarm 2 2 0
19 Fan alarm 3 4 0
20 Fan alarm 4 8 0
21 Water detection 16 0
22 Condensate pan 32 0
23 Filter 64 0
24 Reserved 128 0
Group Alarms 25 to 32
No. Description
Bit
mask Default
25 High temperature 1 0
26 Low temperature 2 0
27 High humidity 4 0
28 Low humidity 8 0
29 High water temperature CW1 16 0
30 Low water temperature CW1 32 0
31 High water temperature CW2 64 0
32 Low water temperature CW2 128 0
Group Alarms 33 to 40
No. Description
Bit
mask Default
33 Return temperature 1 0
34 Return humidity 2 0
35 Remote temperature 4 0
36 Remote humidity 8 0
37 EWT1 temperature 16 0
38 LWT1 temperature 32 0
39 EWT2 temperature 64 0
40 LWT2 temperature 128 0
Group Alarms 41 to 48
No. Description
Bit
mask Default
41 DX1 discharge pressure 1 0
42 DX2 discharge pressure 2 0
43 Economizer return temperature 4 0
44 Economizer return humidity 8 0
45 Economizer outdoor temperature 16 0
46 Economizer outdoor humidity 32 0
47 Circuit 1 high pressure Pre-alarm 64 0
48 Circuit 2 high pressure Pre-alarm 128 0
Group Alarms 49 to 56
No. Description
Bit
mask
De-
fault
49 Static air pressure 1 0
50 Differential air pressure 2 0
51 Dewpoint 4 0
52 Airspeed 8 0
53 Circuit 1 suction pressure 16 0
54 Circuit 1 suction pressure 32 0
55 Circuit 2 suction temperature 64 0
56 Circuit 2 suction temperature 128 0
There are several automatic crossover signals that will cause a
switch over from Unit Active to Unit Off. They are the occurrence
of a remote shutdown command, unit shutdown from a group
alarm, clock schedule or BMS command, fi re/smoke detection,
loss of all cooling (all compressors or all CW valves) or loss of
airfl ow.