41
Accessories hydraulic installation
SMGB0066 rev.0 - 12/2009
Water pipe
installation
Service Manual
2
In order to prevent this, during shutdown periods it is useful to empty the water from the installation.
note
In cases where water drainage is difficult, an antifreeze mixture of glycol (ethylene or propylene) should be used
-
(content between 10 % and 40 %).
The performance of the unit working with glycol may decrease in proportion to the percentage of glycol used,
-
since the density of glycol is higher than that of water.
1G” Water OUT
Water IN
1G”
1/4G”
- Inlet and outlet connection pipes must be 1G”
- It must be kept the water flow direction indicated in previous drawing
note
Check periodically:
-
Water flow and pressure
-
Water leakages
-
Fixing points tightening
-
Minimum water volume description
- necessity of water in system:
The following problems should occur when the quantity of water in the forced circulation system (1) on water side is
insufficient.
WEH frequently ON/OFF cycles affecting Yutaki performance.
1.
Low temperature in water circulation system at defrosting, which should cause an alarm (freeze protection).
2.
LWPS or Cut-Out thermostat activation due to low water pressure (< 1 bar) or due to excessive high water
3.
temperature inside WEH.
