Advertisement
MULTI V Water IV
11.5 Daily check/management
1. Water quality control
•
The plate type heat exchanger is not structured to be disassembled, cleaned or replaced with parts. To
prevent corrosion or scaling on the plate type heat exchanger, special care must be taken to control the water
quality.
•
Water quality must satisfy the minimum criteria of the reference water quality items.
When anti-corrosion agent or corrosion inhibitor is added, the substance must not have any corrosive effect
on stainless steel and copper. Even if the circulating water is not contaminated by the external air, it is
recommended to empty the water flowing in the pipe and to resupply the water.
2. Flow rate control
•
If the flow rate is insufficient, it can cause freezing on the plate type heat exchanger.
Check whether the strainer is clogged or whether the pipe is filled with air and then check the temperature
and pressure difference of the inlet and outlet pipe to check whether the flow rate is insufficient.
•
If the temperature and pressure difference is above the appropriate level, it means that the flow rate is
reduced. In this case, the operation must immediately be stopped and re-operated when the root cause is
resolved. (*If air is trapped in the pipe, the air must be purged. Air inside the water pipe interferes with the
circulation of the heat water supply and can cause insufficient flow rate or freezing.)
3. Brine density management
•
When using the brine (Anti-freeze) in the heat water supply, designated type and density must be used.
Calcium chloride brine can cause corrosion on the plate type heat exchanger and must not be used.
•
If the anti-freeze liquid is left as is, it absorbs the moisture from the air to cause a drop in the density, leading
to freezing of plate type heat exchanger. Therefore minimize the contact surface with the atmosphere and
periodically measure the density of the brine to supplement the brine as needed to maintain the density.
52
Heat Pump
Installation of Outside Units
Advertisement
