Use; Starting And Testing; Temperature Setting; Maintenance - Bosch Tronic 3000T ES2.5 Installation Manual And Operating Instructions

Use

4 Use
4.1

Starting and testing

CAUTION:
DO NOT supply power to water heater until filled with water.
To fill the heater:
▶ Open supply valve for water heater to fill with water.
▶ Open hot water tap(s) supplied by the water heater to
purge air out of the system. Once air is purged, close hot
water tap.
▶ Visually check for any leaks.
Turning heater on
For models which are not fitted with a switch:
▶ Supply power to the water heater by plugging in the power
cord (models ES2.5, ES4) or turning on the circuit breaker
(model ES8). If the light does not come on, turn the control
knob in a clockwise direction.
The light will come on until water temperature has reached
the thermostat temperature setting. The light will come
back on any time the water temperature inside the tank
drops below the thermostat setting.
4.2

Temperature setting

The temperature of the hot water is adjusted by rotating the
knob M located on the front cover. Temperature range is 65 -
145 °F.
▶ Turn the knob clockwise to increase temperature.
▶ Turn the knob counter-clockwise to decrease temperature.
Fig. 8
10
5

Maintenance

CAUTION:
Do not attempt to repair this water heater yourself. Call a
service person for assistance. Always turn off the power supply
to the heater prior to servicing or draining the heater.
Periodic maintenance
For most of these operations, the water will have to be drained
from the heater. For all of these operations the cord should be
disconnected (ES2.5 and ES4 only) and the front cover
removed.
5.1

Removing the cover

▶ Pry off the round cover plate [V] from its right hand edge
[W] with a small flat-head screwdriver.
▶ Remove the Phillips screw revealed beneath the round
cover plate.
▶ The cover [C] can now be removed by pulling out its left-
hand edge. When reassembling, work in the opposite way
being careful to insert the tongue of the cover into the slot.
5.2

Draining the heater

If the heater has been installed with flexible hoses:
▶ Shut off the power supply.
▶ Turn the heater upside down over a sink to drain the water
out of it.
-or-
it can also be emptied by:
▶ Siphon through the inlet side hose.
▶ Keep a hot water faucet open while siphoning.
-or-
If the heater has been installed with rigid piping:
▶ Siphon the water out through any (lower) service valve on
the (inlet side).
▶ Keep a hot water faucet open while siphoning the water out.
5.3

Inspecting the anode rod

The purpose of the anode rod (Fig. 11, [N]) is to protect the
tank against corrosion. It is critical that the anode rod be
inspected once a year to determine whether it requires
replacement. To access the anode rod, the heating element
must be removed (see Section 5.4 Removing the heating
Tronic 3000T – 6 720 892 061 2019/02