RKHH2E-(P)AAV33
ROTEX Domestic Hot Water Heat Pump
2018.8
Installation manual
7
1.3.3 Refrigerant
If applicable. Consult the installation manual of your
application for more information.
WARNING
During tests, NEVER pressurize the unit with
a pressure higher than the allowed
maximum (as indicated on the nameplate
of the unit).
WARNING
Take sufficient precautions in case of
refrigerant leakage. If refrigerant gas
leaks, ventilate the area immediately.
Possible risks:
•
Excessive refrigerant concentrations in a
closed room can lead to oxygen
deficiency.
•
Toxic gas may be produced when
refrigerant gas comes into contact with
fire.
DANGER:
RISK
OF
EXPLOSION
Pump-down
–
Refrigerant leakage
. If you
want to pump-down the system, and
there is a leakage in the refrigerant
circuit:
•
Do NOT use the unit's automatic pump-
down function, with which you can collect
all refrigerant from the system in the
outdoor unit.
Possible consequence
:
Self-combustion and explosion of the
compressor because of air entering the
operating compressor.
•
Use a separate recovery system to
ensure that the unit's compressor does
NOT need to operate.
WARNING
Always recover the refrigerant. Do NOT throw
it out directly into the environment. Use a
vacuum pump to evacuate the
installation.
NOTICE
•
To avoid compressor breakdown, do
NOT charge more than the specified
amount of refrigerant.
•
When the refrigerant system needs to be
opened, refrigerant must be treated
according to the applicable legislation.
WARNING
Make sure there is no oxygen in the system.
Refrigerant may only be charged after
performing the leak test and the vacuum
drying
.
•
In case re-charge is required, consult the
nameplate of the unit. It mentions the type of
refrigerant and required amount.
•
The unit is factory charged with refrigerant.
•
Only use tools allowed for the refrigerant type
used in the system, this to ensure pressure
resistance and prevent foreign materials from
entering into the system.
•
Charge the liquid refrigerant as follows:
If
Then
A siphon tube is present
(i.e. the cylinder is
marked with "Liquid
filling siphon attached")
Charge with the cylinder
upright.
A siphon tube is NOT
present
Charge with the cylinder
upside down.
•
Open refrigerant cylinders slowly.
•
Charge the refrigerant in liquid form. Adding it in
gas form may prevent the unit from normal
operation.
CAUTION
When the refrigerant charging procedure is
done or when pausing, close the valve of
the refrigerant tank immediately. If the
valve is not closed immediately,
remaining pressure might charge
additional refrigerant. Possible
consequence: Incorrect refrigerant
amount
.
1.3.4 Water
If applicable. Consult the installation manual of your
application for more information.
NOTICE
Make sure water quality complies with EU
directive 98/83 EC
.
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