Electric Air Heater - Trox Technik X-CUBE X2 compact 2 Transport And Installation Manual

Optimum ventilation
For the best possible ventilation, we recommend
installing on-site ventilation equipment at the highest
point of the system; see
1. Ensure that the flow and return connections are
correct.
2. Check that fittings are correctly installed.
3. Flush the system to remove any contamination.
4. Open vents (unless automatic vents have been
installed).
Evaporators: As soon as you open the heat
exchanger connection, the contained nitrogen
shield gas content should escape with a
hissing sound. The absence of this sound indi-
cates a leak which has to be fixed before com-
missioning.
5.
For glycol water mixtures we recommend
ready-to-use formulations. See the order-spe-
cific air handling unit data sheet from TROX for
the mixing ratio.
The correct mixing ratio is important:
– Too much glycol will impair performance
– Too little glycol may lead to frost damage
.
Only use one of the following glycols for the air
handling unit:
– Propylene glycol
– Ethylene glycol
Slowly pour the heat transfer fluid into the heat
exchanger at the lowest point in the system. As
you fill the system, check that all external and
internal screw joints and connections are tight.
6. Vent the heating coil/cooling by opening the upper
spigot and the bleed screw.
If the air heater is not properly vented, air bub-
bles may form and impair the performance.
7. Close any vents.
8. Clean the condensate drip tray and drain.
9. Set up the droplet eliminator.
10. Fill the drain trap with water.
Setting up and adjusting AHU casing units > Electric air heater
Ä on page 35 .
Air handling unit X-CUBE X2 compact 2
Initial commissioning
NOTICE!
Risk of damage to property!
– When you tighten thread connections, be sure to
use a suitable tool (e.g. water pump pliers) to
counter the tightening force as otherwise you
may inadvertently damage the parts.
11. Check the flange screw joints and tighten them if
necessary.
ð The heating coil/cooling coil has been set up.

6.3.4 Electric air heater

Personnel:
Skilled qualified electrician

Protective equipment:
Protective clothing

Hearing protection

Industrial safety helmet

Protective gloves

Safety shoes

In air handling units with X-CUBE Control (controls),
both the temperature monitoring and the safety temper-
ature limiter operate independently of one another to
ensure that no inadmissible overheating occurs at the
electric air heater.
For air handling units with on-site controls, on-site
measures must be taken to prevent impermissible tem-
perature excesses. The manufacturer documentation
must be observed for this purpose, see attachment.
CAUTION!
Protection against overheating
The electric air heater must be installed so that the
heating elements cannot start up before the intended
air volume flow is reached. The electric air heater
must be put out of operation as soon as the volume
flow rate is reduced to a level that is not permitted or
the fan is switched off.
To prevent a temperature excess that is not per-
mitted, two temperature-limiting devices must be
installed in the air handling unit independently of
each other (temperature monitor and safety tempera-
ture limiter).
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