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Uni-P H20 200C DEHUMIDIFIER
Warning:
The POE (Polyester) oils used by the HFC-410A refrigerant system absorb moisture quickly. It is thus;
very essential to keep the refrigerant system closed all the time. Ensure that you do not remove
service valve stub caps or the line set caps until you are ready to complete the connections. In a case
where you are using high-pressure gas, for instance, dry nitrogen to pressurize the air conditioning
system or refrigeration, it is important to maintain the pressure at 1 to 2 PSIG.
Caution:
Brazing flux and alloys contain materials that are hazardous to the health. You should, therefore, avoid
breathing in the fumes or vapors released from the brazing operations. It is important that you perform
the operation in a well-ventilated space. Put on protective goggles and gloves or use the face shield to
protect your body against burns. Ensure that you wash your hands using soap and running water after
you handle the brazing flux and alloys. In order to prevent the stripping of the numerous caps utilized,
an averagely sized wrench must be used and should be fitted snugly over the cap prior to tightening.
Also, give the braze joint some time to cool before you remove the wet rag from the service valve. You
should be cautioned that temperatures that are above 250 degrees can damage the seals. You can
use the silver alloy brazing rods that have five percent minimum silver alloy for the purpose of copper
to copper brazing. In the case for copper to steel and copper to brass brazing, make use of the 45%
minimum silver alloy.
Warning:
When using any dehumidifier you should be aware that the device bears along property safety
hazards, explosion, and fire. If you fail to observe the safety measures highlighted in this manual,
death, personal injury, and property damage is more rampant. Make sure that you never use oxygen to
purge or pressurize refrigeration line sets. When oxygen is exposed to open flame or sparks it can
cause an explosion and/or fire that could result in associated hazards. It is important to note that there
is a service port in the Uni-P H2O 200CC dehumidifier especially on the gas line, and on both stub
tubes of the condensing unit. The service ports can be utilized to release and introduce nitrogen during
the brazing process.
Caution:
The Uni-P H2O 200CC dehumidifier is whipped from the manufacturer pressurized with the charge of
inert gas together with a rubber plug in the lines. You can purge the inert gas out of the device by
simply removing the rubber plugs present in the gas and liquid line to release the inert gas prior to
connecting the line sets.
Tel: 888-990-7469
Installation, Operation & Service Instructions
6
Uni-P H20 200C DEHUMIDIFIER
Note:
In a case where there is no pressure in the Uni-P H2O 200CC dehumidifier when the first
plug is released, ensure that you check the device for leaks and damage before you proceed with
the installation.
You can make use of the following procedure to perfectly
set the lines to the device:
•
First of all, purge the inert gas present in the device by simply removing the rubber plugs present
in the gas and liquid lines to release the gas before you proceed to connect the line sets.
•
Place a heat shield, for instance, a wet rag against the Uni-P H2O 200CC dehumidifier and all
around the piping stubs. Ensure that the heat shield is also in place to help protect the cabinet from
any possible heat damage.
•
If necessary, swage the gas and liquid lines to fit with the dehumidifier lines.
•
Ensure that you purge the line set and the dehumidifier lines with the inert gas (dry nitrogen) to
prevent any possible chances of oxidation during the brazing process. Make sure that you flow
dry nitrogen throughout the lines set up to the dehumidifier lines.
•
Next, braze the line sets up to the dehumidifier lines.
•
Ensure that you remove the heat shield soon after brazing and enable the connected lines to cool.
You can make use of the following procedure to connect the
condensing unit to the line set:
•
Make sure that you first cut the line set to the desired length. Cover the cut ends of the line sets.
•
Use the flare fittings that are included in the condensing unit to fit the lines onto the line set where
needed.
•
Carefully swage the gas lines and the liquid lines where necessary to ensure that they fit onto the
line stubs and bind with fare fittings.
•
Next, remove the service valve cores and caps.
•
You can purge the lines with the inert gas such as dry nitrogen to prevent the occurrence of
oxidation during the brazing process.
•
Ensure that you braze the line stubs to the line sets.
•
On completion of the above step, remember to apply a light coating of oil to the flare fittings and
threads present on the condensing unit valves.
•
Kick-start each and every flare nut on the parallel flare fitting present on the condensing unit valves
using your hand, and make sure the threads are engaged well. Ensure you tighten the flare units
well by hand.
•
Carefully tighten the flare nuts to their corresponding flare fittings on the condensing unit valves.
•
On completion of this procedure reinstall the service valve caps and cores.
7
Installation, Operation & Service Instructions
Tel: 888-990-7469
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