Water Quality - Bosch PROTANKLESS GWH 345 User Manual

Pressure drop curves
Note: Flow above 6 GPM is not permitted.
50 feet of head
40 feet of head
30 feet of head
20 feet of head
10 feet of head
0 feet of head
0 GPM
Fig. 8 GWH 345 ESR
50 feet of head
40 feet of head
30 feet of head
20 feet of head
10 feet of head
0 feet of head
0 GPM
Fig. 9 GWH 450 ESR
2.7

Water quality

Water quality can have an impact on appliance performance and appliance longevity, and may not be covered by the
manufacturer's warranty.
For water analysis data call your local water department. If on a well system, have well water analyzed periodically. If
water quality is exceeding one or more of the values specified below, Bosch recommends installing a water condi-
tioner or softener.
Descri- pH TDS
ption (Total
Dissolved
Solids)
Max. pH mg/l or
Levels range ppm
6.5-8.5 500
Table 2 Venting Specifications
6 720 607 909
GWH 345 ESR
1 GPM 2 GPM 3 GPM
water flow rate
GWH 450 ESR
1 GPM 2 GPM 3 GPM
water flow rate
Total Aluminum
hardness
mg/l or mg/l or
ppm ppm
100 (6 0.2
grains)
4 GPM 5 GPM
4 GPM 5 GPM
Chlorides Copper Iron
mg/l or mg/l or mg/l or
ppm ppm ppm
250 1.0 0.3
Appliance details
6 GPM
6 GPM
Manganese Zinc
mg/l or ppm mg/l or
ppm
0.05 5.0
9