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CAUTION:
• If the unit is installed at existing hydraulic water loop, it is important to clean hydraulic pipes to remove
sludge and scale.
• Installing sludge strainer in the water loop is very important to prevent performance degrade.
• Chemical treatment to prevent rust should be performed by installer.
Freezing protection
In areas of the country where entering water temperatures drop below 15℃(59℉), the water pipe must
be protected by using an approved antifreeze solution. Consult your
approved solutions in your area. Calculate the approximate volume of water in the system. (Except the
unit.) And add antifreeze solution to the total volume to allow for the water contained in
Hydro Kit
unit.
Hydro Kit
Type of Antifreeze
Ethylene glycol
Propylene glycol
Methanol
CAUTION:
1. Use only one of the above antifreeze.
2. If a antifreeze is used, pressure drop and capability degradation of the system can occur.
3. If one of antifreezes is used, corrosion can occur. So please add corrosion inhibitor.
4. Please check the concentration of the antifreeze periodically to keep same concentration.
5. When the antifreeze is used (for installation or operation), take care to ensure that antifreeze
must not be touched.
6. Ensure to respect all laws and norms of your country about Anti-freeze usage.
7. When hydro kit is applied for cooling, the antifreeze must be added in the water circuit to
prevent freezing.
8. Set the Dip S/W and short key to Anti Freeze mode only after the addition of brine(Anti-freeze).
Or else the product may get damage due to freezing and bursting.
WARNING:
Do not add brine(Anti-freeze) to the water circuit when it is used for hot water.
Minimum Temperature for Freeze Protection
15℃(59℉) ~ -5°C(23°F)
12%
17%
6%
Hydro Kit
-10℃(14℉)
-15℃(5℉)
20%
30%
25%
33%
12%
16%
Hydro Kit Installation Manual 19
Installation
unit supplier for locally
-20℃(-4℉) -25℃(-13℉)
-
-
-
-
24%
30%
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