HTW SR24 Manuel De L'utilisateur Et D'installation page 44

4. TRIAL-RUNNING
4.1 Water affusion before operation
Before using this unit, please follow the steps below.
Water Affusion: If the unit is used for the first time or used again after
emptying the tank, please make sure that the tank is full of water
before turning on the power.
Open the cold water inlet valve and the hot
water outlet valve.
Open
Cold water inlet
When water flows out from the water outlet,
the tank is full. Turn off the hot water outlet
valve and water affusion is finished.
Hot water outlet
CAUTION
Operation without water
in water tank may result
in the damage of auxiliary
E-heater. Due to such
damage, manufacturer
will not be liable for any
damages caused by
this issue.
After powered on, the display lights up.
Users can operate the unit through the
buttons under the display.
Emptying: If the unit needs cleaning, moving
etc, the tank should be emptied.
Close the cold water inlet valve, open the hot
water outlet valve and open drainpipe.
Close
Cold water inlet
Open
Hot water outlet
Water Affusion
Close
Water out
Open
Hot water outlet
Open
Drainpipe shut-off valve
After emptying, please replace the nut of
drainpipe.
Close
4.2 Trial- running
4.2.1 Checking list before commisionning.
1) Checking list before trial-running.
2) Correct installation of the system.
Correct connection of water/air piping and wiring.
3)
Condensate draining smoothly well insulation work for all
4)
hydraulic part.
5) Correct power supply.
No air in the water pipeline and all valves opened.
6)
7)
Effective electric leakage protector installation.
8) Sufficient inlet water pressure (between0.15MPa and 0.65MPa).
4.2.2 About Running
System Structure Figure
1)
Unit has two kinds of heat sources: heat pump(compressor)
and electric heater.
Unit will automatically select heat sources to heat water to the
target temperature.
Water outlet
Temperature sensor(T5U)
Electric heater
Temperature sensor(T5L)
Water inlet
2)
Water Temperature Display
The temperature shown on the display depends on the maximum
of the upper sensor and the lower sensor.
Heat source will be automatically selected by unit. But manually
3)
E-Heater operation is available.
Running Temperature Range
Setting water temperature target range: 38~70ºC.
Electrical heater running ambient temperature range: -20~47ºC.
Water temperature limits:
13
Emptying
Drainpipe shut-off valve
Tank
Fig.4-3