Application's Manual

Data subject to change without notice | 01.2011
BOSCH THERMOTECHNOLOGY CORPORATION
THERM Tankless Water Heater Applications Manual
6
|
Available accessories continued Table 2
660 EF 660 EFO 520 HN 520 PN 330 PN
Pipe cover
(part#
BPCKIT)
√√
Remote control - for U.S.A
(part# BRC01US)
√√
Remote control - for Canada
(part# BRC01CA)
√√
Remote controller outdoor junction box
(part# BOJB)
√√
Remote controller cord 10ft (3m)
(part# BRC10CORD)
√√
Remote controller cord 26ft (8m)
(part# BRC26CORD)
√√
Isolation valves - pressure relief valve included
(part#
9260LA)
√√
Pressure relief valve
(part#
FWL-2)
√√√√√
Freeze prevention kit
(part# (7709003775)
√√
4 Water Quality
Poor water quality will have an impact on appliance longevity and
may void the manufacturer’s warranty. For water analysis data call
your local water department, or if on a well, have well water
analyzed periodically. If water quality exceeds one or more of the
values specifi ed below, Bosch recommends consulting a local water
treatment professional for water softening/conditioning options.
Water quality max. levels Table 3
Description Max. Levels
pH pH 6.5 - 8.5
TDS (Total Dissolved Solids) mg/l or ppm 500
Total hardness mg/l or ppm 100 (6 grains)
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