Start-Up Procedure; Commissioning The Dhw Tank; Shutdown; Shutting Down The Tank - Buderus SU54/5 Notice D'installation Et D'entretien

6

Start-up procedure

NOTICE: Risk of equipment damage from excess
pressure!
Excessive pressure can result in tension cracks in the
enamel coating.
▶ Never plug the blow-off line of the T&P safety valve.
6.1

Commissioning the DHW tank

Have the installer of the heating system or a qualified contractor
commission the equipment.
▶ Commission the boiler and additional accessories in accordance with
manufacturer's instructions or the appropriate installation and
operating instructions.
Use only drinking water to check the DHW tank for leaks.
On the DHW side, the test pressure must not exceed
150 psi (10,3 bar) gauge pressure.
▶ To bleed air from the DHW tank, open the highest tap/valve.
▶ To fill the tank, open the shut-off valve for the cold water inlet.
▶ Flush the tank and piping thoroughly prior to commissioning.
▶ Before heating up, verify that the boiler, tank and pipework are filled
with water. Open the air bleeder valve for this purpose.
▶ Check all connections, piping and the inspection port for leaks.
7

Shutdown

NOTICE: Risk of tank damage!
Residual moisture can result in corrosion.
▶ Thoroughly dry out the inside (e. g. by means of hot
air) and leave the cleanout cover open.
7.1

Shutting down the tank

▶ Switch off the temperature controller at the control panel, shut of the
heating system emergency shutoff switch, or disengage the heating
system circuit breaker.
WARNING: Risk of scalding from hot water!
▶ Let the tank cool down sufficiently.
▶ Close the cold water inlet shutoff valve.
▶ Drain the DHW tank via the drain valve by opening the highest faucet.
▶ Close the shut-off valves to and from the boiler.
▶ Depressurize the heat exchanger.
▶ Drain and blow out the heat exchanger.
▶ To prevent corrosion, dry out the inner space and keep the inspection
port covers open.
SU54.5 | SU80.5 | SU100.5 – 6 720 819 292 (2017/11)
7.2 Shutting down the heating system when there is a risk
of frost
▶ Shut down the heating system and the DHW tank as shown in
Chapter 7.1.
Fully drain the tank – even the lowest section of the tank
and the heating coil.
8

Environmental protection/disposal

Environmental protection is one of the fundamental company policies of
the Bosch Group. We regard quality of performance, economy and
environmental protection as equal objectives.
Environmental protection laws and regulations are strictly adhered to.
To protect the environment, we use the best possible technology and
materials taking into account economic points of view.
Packaging
For the packaging, we participate in the country-specific recycling
systems, which guarantee optimal recycling. All packaging materials
used are environmentally-friendly and recyclable.
Old electrical and electronic appliances
Electronic or electrical or electronic equipment hat can no
longer be used must be collected separately and properly
recycled (European Directive on Waste: Electrical and
Electronic Equipment).
Use the return and collection systems specified by federal
law to dispose of electrical and electronic waste.
9

Maintenance

▶ Allow the DHW tank to cool down sufficiently before performing any
maintenance.
▶ Remedy all faults immediately.
▶ Use original spare parts only!
▶ The tank must be inspected annually and maintained as required.
▶ Check the T&P safety valve annually.
9.1

Preparing the DHW tank for cleaning

The SU80/5 and SU100/5 tanks are cleaned by means of the cleanout
on the side. The SU54/5 tank is cleaned by means of the cleanout at the
top.
WARNING: Risk of scalding from hot water!
▶ Prior to cleaning, allow the DHW tank to cool down
sufficiently.
▶ Disconnect electrical power from the heating system.
▶ Drain the DHW tank. To do so, close the shut-off valve for cold water
inlet and the open drain valve. To vent the system, open the air vent
valve or the highest faucet.
▶ PS jacket cover (SU54/5) ( Fig. 17, page 14, [1]) or handhole
cover (SU80/5, SU100/5) ( Fig. 18, page 14, [1]) of the DHW
tank.
▶ Loosen the hex bolts [2] in the cleanout cover [3].
6
Start-up procedure
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