Viessmann VS 87 - Specifications and Dimensions

2
Variable Salt Dose: The salt dose is selected by the electronic controls at regeneration time based on the amount
needed.
Specifications & Dimensions
Model
VS 34 VS 74 VS 87 VS 124
Model Code VS34 VS74 VS87 VS124
Rated Softening Capacity (mol @ kg Salt Dose)
2.4 @ 0.4
3.4 @ 0.7
4
.5
@ 1
.3
4.4 @ 0.65
7.4 @ 1.3
1
0.3
@ 3
.6
5.8 @ 0.84
8.7 @ 1.4
1
1.7
@ 2
.6
6.82 @ 1.09
12.4 @ 2.1
1
8.0
@ 3
.9
Rated Efficiency (mol per kg @ Min. Salt Dose) 6.00 6.77 6.90 6.26
Service Flow Rate (L/min.) 15 24 28 27
Pressure Drop at Service Flow Rate (bar) 0.23 0.71 1 1
Intermittent Flow Rate (L/min.) @ 1 bar 33 28 28 27
Amount of High Capacity Resin (liters) 8.9 14.2 17.2 23.1
Water Used during Recharge @ Min. Salt Dose (liters) 47 66 104 114
Water Used during Recharge @ Max. Salt Dose (liters) 44 68 106 103
Water Supply Max. Clear Water Iron (ppm) 3 4 5 5
Min.-Max. Working Pressure (bar) 1.4 - 8.5
Min.-Max. Operating Temperature (°C) 4 - 49
Max. Flow Rate (L/min.) to Drain during Recharge 6.8
Model
Nominal Resin
Tank Size
Salt Storage
Capacity
Dimension
A
Dimension
B
Dimension
C
VS 34 22.9 x 35.6 cm 19 kg 41.5 cm 29.1 cm 55 cm
VS 74 20.3 x 63.5 cm 25 kg 70 cm 58.4 cm 83.8 cm
VS 87 20.3 x 88.9 cm 68 kg 94 cm 83.8 cm 106.7 cm
VS 124 20.3 x 101.6 cm 79 kg 105.4 cm 95.3 cm 119.4 cm
IN - OUT
FIG. 1
32.4 cm
43.2 cm
8.6 cm
OUT
IN
A
B
C