Delta InfraSuite RDA037, Руководство пользователя

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For how to interpret the values shown on the main page and how to operate the main page,
refer to
Chapter 5. Operation .
4.3 Charging Refrigerant
Before powering on, the system needs to be filled with refrigerant since if the compressor
runs in vacuum, it will be damaged. The process is as follows:
1. As shown in Figure 3-29 , both the vacuuming and refrigerant filling processes use a
refrigerant gauge to connect these two points.
2. Once the vacuuming process is completed, remove the vacuum pump and connect the
R410A refrigerant filling pipe when the compressor is not operating. Fill the liquid pipe
schrader valve with refrigerant till the refrigerant cannot flow in (refrigerant in the system
should still be insufficient at this point).
3. Turn off the circuit between the high-pressure side and the refrigerant tank, and turn on
the compressor to fill the system with sufficient refrigerant through the schrader valve
behind the electronic expansion valve.
4. Press
POWER ON
on the start page of the
TOUCH PANEL
. Once the compressor is
running, turn on the low-pressure side circuit to allow refrigerant to flow in, and turn off
the circuit when the compressor stops. Because there is no heat load during the initial
operation, the compressor may need to start and stop several times to fill the refrigerant.
The lack of bubble formation on the sight glass means that the amount of system
refrigerant is sufficient.
5. The amount of refrigerant needed to fill the entire system will vary due to different pipe
lengths, as explained below.
Total charge: Basic Additional charge
Basic charge: 26.5lb
Additional charge: If the length of the piping more than 33 ft, add 0.13 lb for each foot.
Example: Length of the piping 82 ft, total charge is 32.87 lb.
26.5 lb + (82 ft ~ 33 ft) × 0.13 lb/ ft = 32.87 lb