Viessmann AWT 221.A04, Installation And Service Instructions For Contractors

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Type AWT/AWT-AC 221.B10 221.B13 221.B16
Integral DHW cylinder
Capacity l 170 170 170
Continuous output for DHW
heating from 10 to 60 °C l/h 306 357 380
Performance factor N
L
to
DIN 4708
1.3 1.4 1.4
Max. draw-off rate at the speci-
fied performance factor N
L
and
DHW heating from 10 to 45 °C
l/min 15.9 16.5 16.9
Max. permissible DHW tempera-
ture °C 95 95 95
External unit dimensions
Total length mm 340 340 340
Total width mm 975 975 975
Total height mm 1255 1255 1255
Internal unit dimensions
Total length mm 680 680 680
Total width mm 600 600 600
Total height mm 1829 1829 1829
Total weight
External unit kg 113 113 121
Internal unit kg 197 197 197
Permissible operating pres-
sure
■
Secondary side bar 3 3 3
MPa 0.3 0.3 0.3
■
DHW side bar 10 10 10
MPa 1 1 1
Connections
Heating water flow mm Cu 28 x 1 Cu 28 x 1 Cu 28 x 1
Heating water return mm Cu 28 x 1 Cu 28 x 1 Cu 28 x 1
Cold water Rp
¾ ¾ ¾
DHW Rp
¾ ¾ ¾
DHW circulation G 1 1 1
Liquid line
■
Pipe
7
mm 10 x 1 10 x 1 10 x 1
■
Internal unit UNF
⅝ ⅝ ⅝
■
External unit UNF
⅝ ⅝ ⅝
Hot gas line
■
Pipe
7
mm 16 x 1 16 x 1 16 x 1
■
Internal unit UNF
⅞ ⅞ ⅞
■
External unit UNF
⅞ ⅞ ⅞
Max. line length, liquid line, hot
gas line m 30 30 30
Specification
Specification
(cont.)
5776 028 GB
Appendix