Viessmann AWT-AC 221.A04, Installation And Service Instructions Manual

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141
Type AWT-AC 221.A04 221.A07 221.A10 221.A13
Total weight
External unit kg 43 66 110 110
Internal unit kg 194 194 197 197
Permissible oper-
ating pressure
,
secondary side
bar
MPa 3
0.3
3
0.3
3
0.3
3
0.3
Connections
Heating water flow mm Cu 28 x 1 Cu 28 x 1 Cu 28 x 1 Cu 28 x 1
Heating water re-
turn mm Cu 28 x 1 Cu 28 x 1 Cu 28 x 1 Cu 28 x 1
Cold water Rp ¾ ¾ ¾ ¾
DHW Rp ¾ ¾ ¾ ¾
DHW circulation G 1 1 1 1
Condensate pipe
(external unit) mm 16 x 1 16 x 1 16 x 1 16 x 1
Liquid line
■ Pipe
7
mm 6 x 1 10 x 1 10 x 1 10 x 1
■ Internal unit UNF ⅝ ⅝ ⅝ ⅝
■ External unit UNF
⁷
⁄
₁₆
⅝ ⅝ ⅝
Hot gas line
■ Pipe
7
mm 12 x 1 16 x 1 16 x 1 16 x 1
■ Internal unit UNF ⅞ ⅞ ⅞ ⅞
■ External unit UNF ¾ ⅞ ⅞ ⅞
Max. line length,
liquid line, hot gas
line m 20 30 30 30
Sound power lev-
el of external unit
(Measurements
with reference to
EN 12102/
EN ISO 9614-2)
Weighted total
noise emission lev-
els at A7 °C (±3 K)/
W35 °C (±5 K)
■ At rated heating
output
dB(A) 60 62 62 63
Specification
Specification
(cont.)
5782 201 GB
Service