ATLAS D SI UNIT
45
(1
Table. 5 - Circulating pump LED indications
5. TECHNICAL DATA AND CHARACTERISTICS
5.1 Dimensions, connections and main components
fig. 34 - Front view
fig. 35 - Rear view
fig. 36 - Side view
Key of figures
8 =
Domestic hot water outlet - Ø 1/2”
9 =
Cold water inlet - Ø 1/2”
10 =
System delivery - Ø 3/4”
11 =
System return - Ø 3/4”
14 =
Pressure relief valve
32 =
Heating circulating pump
36 =
automatic air vent
38 =
Flow switch
56 =
Expansion tank
74 =
System filling cock
95 =
Diverter valve
194 =
DHW exchanger
246 =
Pressure transducer
255 =
System water drain
278 =
Double sensor ( Heating)
295 =
Burner
Off
Circulating pump on STANDBY
Green ON
Circulating pump Working
Green Flashing
Air venting cycle
Green/Red alternating
Circulating pump blocked due to external causes:
- Overvoltage (>270V)
- Insufficient voltage (<160V)
- Motor overload
Red Flashing
Circulating pump blocked due to internal causes:
- Motor blocked
- Damaged electronics
Min.
4
1
7
III
II
I
500
36
295
194
38
74
32
95
246
278
210
290
145
50
850
78
639
210
63
309
63
98
65
14
10
8
11
9
Ø120-130
95
194
38
56
74
32
255
630
(ATLAS D 25 SI UNIT)
730
(ATLAS D 37 SI UNIT)
10
11
9
8
cod. 3541I070 - Rev. 04 - 04/2018
