Viessmann 301.BS090, Installation And Service Instructions For Contractors

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Type WW Single stage Two-stage
301.BS 302.BS
125 155 125 155 200 250 300
Electrical values, control
unit
Rated voltage 1/N/PE 230 V/50 Hz
MCB/fuse protection 1 x B16A
MCB/fuse 6.3 AH (slow)/250 V~
Rated output W 1000 1000 1000 1000 1000 1000 1000
Max. power consumption,
stage 1 W 25 25 25 25 25 25 25
Max. power consumption,
stage 2 W 20 20 20 20 20
Max. power consumption,
stages 1 & 2 W 45 45 45 45 45
Safety category/IP rating IP20 IP20 IP20 IP20 IP20 IP20 IP20
Refrigerant circuit
Refrigerant R410A
Refrigerant charge kg 18.4 21.4 18.9 21.2 25.8 28.3 31.8
Permiss. operating pressure,
low pressure side bar 18 18 18 18 18 18 18
Permiss. operating pressure,
high pressure side bar 43 43 43 43 43 43 43
No. of hermetically sealed
scroll compressors Type 1 1 2 2 2 2 2
Permiss. operating pres-
sure
Primary circuit bar 6 6 6 6 6 6 6
Secondary circuit bar 6 6 6 6 6 6 6
Dimensions
Total length mm 1932 1932 1932 1932 2521 2521 2521
Total width mm 911 911 911 911 911 911 911
Total height without program-
ming unit mm 1650 1650 1650 1650 1650 1650 1650
Connections
Primary circuit flow and return
7
3" 3" 3" 3" 3" 3" 3"
Heating water flow and return
7
2
½
" 2
½
" 2
½
" 2
½
" 2
½
" 2
½
" 2
½
"
Weight kg 1015 1055 1035 1060 1330 1380 1425
Sound power level (tested
with reference to EN 12102/
EN ISO1914-2) Weighted total
sound power level at
W10
±
3 K
/W35 ±
5 K
At rated heating output dB(A) 61.5 63 58 60 63 64 65
Specification
Specification, type WW 301.BS125 to WW 302.BS300
(cont.)
5549 991 GB
Service