32
Commissioning the Heater
Following tests must be carried out before com-
missioning the heater:
•
Insulation test with a voltage of at least 500V. The
dielectric resistance must be at least 0,5MOhm.
•
The electrical installer must measure the power
draw of the elements. This can be done using a
kW and time measurement or alternatively by
measuring the cold element resistance.
The value is to be compared with that of the rating
label or in the ‘Technical Data’ Section.
Note:
During the first charging periods the machine oils
various used in manufacture, as well as dust par-
ticles accumulated during manufacture and stor-
age burn off, causing an unpleasant odour.
Make certain the room is well ventilated.
Re-assembly
Heaters that have already been in operation or have
been taken apart and repositioned must be re-
installed according to these instructions. The commis-
sioning tests described on this page must also be
carried out.
The first charging cycle after re-assembly must be
monitored by the installer until the charge control
switches off the elements.
Any insulation parts which are, or seem to be, dam-
aged or have changed properties which could influ-
ence their function and safety, must be replaced.
Trouble Shooting Tips
Olsberg Storage heaters are equipped with a continu-
ous running charge control and a charge safety non-
resetting limit switch. If the charge control does not
switch off the elements under normal charging condi-
tions, the non-resetting safety limit switches off the
power supply to the elements. Problems in this cate-
gory must only be repaired by a qualified installer (see
Chapter "Important Instructions").
If the heater does not work correctly, the following
checks should be undertaken:
1. Heater does not store heat
Check the circuit breakers and relays.
Switch on the Central Charge Control and measure
the control voltage on terminals A1/Z1. A defective
central charge control can lead to continuous voltage
on the control resistance, causing it to heat up so
much, that the heater is always switched off.
Check whether the charge control or non-resetting
safety control has switched off. The safety control is
reactivated by pushing in the activating knob. Possible
causes of the heater switching off are:
- defective charge control thermostat
-
prohibited covering of the heater causing hot-spots
2. Heater always goes on full charge
Charge control defect? Heaters that are controlled by
a central charge control should be checked to see that
the control sensor is sitting correctly in the control
resistance. Check that the central charge control is
working and providing voltage to the control resis-
tance. Check the control resistance also. At the same
time, check that the sensor bulb sits correctly in its
sleeve.
3. Heater does not give out enough heat
Heater sized too small. Fan or room temperature con-
trol is defective.
The central charge control may also have to be ad-
justed higher. The special instructions for the respec-
tive charge control are to be adhered to.
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