Installation / Operation Instruction Manual

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Installation instructions
RTG-K-199/160N/X2 – 6 720 813 642 (2022/06)
4.9 Water quality
Water quality can have an impact on appliance longevity. Water
supplied to the RTG-K-199/160N/X2 must be in accordance
with table 11 and fig. 11.
For water analysis data call your local water department, or if on
a well, have well water analyzed periodically. Heavy scale will
form if the combination of water total hardness and pH exceeds
the values specified in fig. 11 (grey area), Bradford White
recommends consulting a local water treatment professional
for water softening/conditioning options.
Table 11 Water Quality
Fig. 11 Water total hardness and pH values
1. Total Hardness and pH maximum values must be evaluated
in combination. Indicated maximum values will be reduced
according to fig. 11.
2. Combined values of total hardness and pH must be under
the indicated grey area. (e.g. the pair [180;8.3] [total
hardness; pH] is not acceptable).
4.10 Water connections
NOTICE:
▶ This heater is not approved for preheated water
applications exceeding 140 °F (60 °C) for Residential
appliances, in these cases use a 3-way valve or mixing valve
must be installed before the appliance to prevent water
exceeding 140 °F (60 °C) for Residential appliances from
entering the appliance.
▶ When facing the heater, the ¾" cold connection is on the
bottom right and the hot connection is on the bottom left.
▶ Tighten all water connections with the support of a wrench,
see Fig. 12.
Fig. 12
[1] Hot connection
[2] Cold connection
Fig. 13 Water filter
[1] Cap
[2] Water filter
Description Max. Levels
pH pH 6.5 - 8.5
TDS (total Dissolved Solids) mg/l or ppm 690
Total hardness mg/l or ppm 200
Aluminum mg/l or ppm 2.0
Chlorides mg/l or ppm 250
Copper mg/l or ppm 1.0
Iron mg/l or ppm 0.3
Manganese mg/l or ppm 0.05
Zinc mg/l or ppm 5.0
6720813642-09.2V
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