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21
Water quality
Tronic 1000 T – 6 720 821 421 (2017/10)
10.3.1 Draining the water heater
▶ Isolate the electrical supply at the main switchboard via the
circuit breaker switch or isolating switch, and then remove
the fuse.
▶ Isolate the cold water supply to the appliance.
▶ Gently raise the lever on the PTR valve to relieve the
pressure in the water heater until flow stops.
▶ Disconnect the cold water connection to the appliance and
attach drain hose.
▶ Operate the lever on the PTR valve again allowing air into
the water heater.
▶ The water heater will drain through the hose.
10.3.2 Flushing the water heater
▶ Complete the draining operation(section 10.3.1) then
disconnect the hot water outlet connection and attach a
water supply hose to the water heater.
▶ Turn on the water supply and allow flow until the water from
the inlet becomes clear.
▶ After the water from the inlet becomes clear, remove the
hose and reconnect the hot and cold water connections.
10.3.3 Filling the water heater
▶ Open all hotwater taps in the house.
▶ Open the cold water isolating valve to the water heater.
▶ Close each tap as water flows freely from it.
▶ Check all piping for leaks.
▶ Reconnect power to the water heater.
Fig. 8
11 Water quality
All Bosch water heating appliances are constructed from high
quality materials and components, and all are certified for
compliance with relevant parts of Australian and New Zealand
gas, electrical and water standards.
This water heater has been designed and constructed to be
suitable for connection to most water supplies in Australia and
New Zealand. However, in areas where Total Dissolved Solids
(TDS) exceeds 2500mg/L, detrimental effects on water heater
performance and longevity will result.
While Bosch water heaters are warranted against
manufacturing defects, the warranty is conditional upon
correct installation and use, in accordance with detailed
instructions provided with the heater. In the case of the water
supplied to the heater, it is important that the water quality be
of acceptable standard.
The water quality limits/parameters listed in the water quality
table (table 6, page 22) are considered acceptable, and
generally Australian and New Zealand suburban water supplies
fall within these limits/parameters.
Where uncertainty exists concerning water quality, intending
appliance users should seek a water analysis from the water
supplying authority. In cases where it is established that the
water supply does not meet the quality requirements of the
water quality table, the Bosch warranty would not apply.
Anode
Should your water supply have a TDS of greater than 600mg/L,
the installed anode must be the “blue” one (aluminium) or
hydrogen gas can accumulate at the top of the water heater in
long periods of no use. When this is likely to occur, the installer
should instruct the householder on how to dissipate the gas
safely. This process is explained on the previous page under
CAUTION:
Turn off the power supply to the water
heater before draining water.
If you intend on being away from your house
for only a few days, we suggest you leave the
water heater switched on.
Large volumes of water will drain from the
cold water inlet.
▶ Ensure proper drainage of water.
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