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Water Connections; Water Quality; Electrical Connections - Bosch US3 Installation Manual And Operating Instructions

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10 | Installation
4.3

Water connections

B The unit should be connected directly to the main
cold water supply and not to pre- heated water. The
unit should be installed with service valves on both
the inlet and outlet. These valves can be used to turn
off the water supply to the unit if it needs servicing, or
to reduce the water flow if it is too high.
B We recommend that you use ½" copper or high
pressure flex connections.
B Use Teflon tape for sealing pipe threads. Do NOT use
pipe dope.
B Remember to keep the hot water pipe runs as short
as possible. In some cases it may be worth fitting a
second unit to serve an additional fixture.
B The inlet and outlet are clearly marked on the unit.
They each have a ½" NPT connector.
B If the unit is to supply a sink, we recommend that you
use aerators, which you can get from your local
distributor/dealer.
B If the unit is to supply more than one sink, the aerator
should be the same at each tap if they are to be used
at the same time. If not, one outlet will take all the
water.
B After the unit has been plumbed in, and before you
wire it, flush it with water to remove any debris or
loose particles. Failure to do so may make the unit
inoperable.
As a condition of installing this product in
the Commonwealth of Massachusetts a
pressure relief valve must be installed on
the cold water side by a licensed plumber.
MGL 42 Section 19.
Approval number: P1-09-25
4.3.1

Water quality

Water quality can have an impact on appliance longevity
and may not be covered under the manufacturer's
warranty.
B 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
specified below, Bosch recommends consulting a
local water treatment professional for water
softening/conditioning options.
6 720 647 005 (2011/09)
Description
pH
TDS (total Dissolved
Solids)
Total hardness
Aluminum
Chlorides
Copper
Iron
Manganese
Zinc
Table 5
4.4

Electrical connections

WARNING:
B The unit must be installed by a qualified
electrician.
B The unit must be grounded.
B Connect the unit to power.
Rated
Voltage
Model
(V)
US3
110
US6
277
US7
240
US9
208
US9
240
Table 6
NOTE:
When the Tronic 3000C Pro is not within
sight of the electrical circuit breakers, a
circuit breaker lockout or additional local
means of disconnection for all non
grounded conductors must be provided that
is within sight of the appliance. (REF NEC
422.31)
US
Max. Levels
pH
6.5 - 8.5
mg/l or ppm
500
100
mg/l or ppm
mg/l or ppm
2.0
mg/l or ppm
250
mg/l or ppm
1.0
mg/l or ppm
0.3
mg/l or ppm
0.05
mg/l or ppm
5.0
Rated
Recommen
Current
d Wire Size
(A)
(AWG)
30
10
25
10
30
10
35
8
40
8

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