Viessmann BWT 221.A06, Installation And Service Instructions Manual, Page: 113 / 124

113
Type BWT 221.A06 221.A08 221.A10
Permiss. operating pressure
Primary circuit (brine) bar 3.0 3.0 3.0
Secondary circuit heating water bar 3.0 3.0 3.0
Secondary circuit DHW bar 10.0 10.0 10.0
Connections
Primary flow and return (brine) mm Cu 28 x 1
Heating flow and return mm Cu 28 x 1
Cold water, DHW R
P
¾
DHW circulation G 1
Sound power level
(Test with reference to DIN EN 12102/
DIN EN ISO 9614-2)
Weighted total sound power level at B0 °C
(±3 K)/W35 °C (±5 K)
■ At rated heating output dB(A) 43 43 43
Vitocal 222-G, 230 V
Type BWT-M
221.A06 221.A08 221.A10
Heating output data at 5 K spread
(to EN 14511, B0/W35 °C)
Rated heating output kW 6.0 7.8 10.1
Cooling capacity kW 4.6 6.0 7.9
Power consumption kW 1.50 1.86 2.36
Coefficient of performance
∊
(COP) 4.0 4.2 4.3
Heating output data at 10 K
spread
(to EN 255, B0/W35 °C)
Rated heating output kW 6.2 8.0 10.4
Cooling capacity kW 4.9 6.4 8.3
Power consumption kW 1.45 1.77 2.27
Coefficient of performance
∊
(COP),
heating
4.3 4.5 4.6
Primary circuit (brine)
Capacity l 3.3 3.3 3.9
Minimum flow rate at a spread of
5 K (always maintain) l/h 820 1120 1450
Maximum external pressure drop
(RFH) at minimum flow rate mbar 670 640 590
Max. inlet temperature °C 15 15 15
Min. inlet temperature °C –5 –5 –5
Specification
Specification
(cont.)
5601 574 GB
Service