Initial Start-Up At Low Outdoor Ambient Temperatures; Powering Up The Unit; Pre-Operation Checks; Setting The Pump Speed - EAS ELECTRIC ETHKH160 Manual De Instrucciones

6.3 Initial start-up at low outdoor ambient temperatures

During initial start-up and when water temperature is low, it is
important that the water is heated gradually. Failure to do so may
result in cracking of concrete floors due to rapid temperature change.
Please contact the responsible cast concrete building contractor for
further details.
To do so, the lowest water flow set temperature can be decreased
to a value between 25°C and 35°C by adjusting the FOR
SERVICEMAN.
Refer to "FOR SERVICEMAN/special function/preheating for floor".

6.4 Pre-operation checks

Checks before initial start-up
CAUTION
Switch off the power supply before making any connections.
After the installation of the unit, check the following before switching
on the circuit breaker:
1. Field wiring
Make sure that the field wiring between local supply panel and
unit and valves (when applicable), unit and room thermostat
(when applicable), unit and domestic hot water tank, and unit and
backup heater box have been carried out according to the
instructions described in the chapter "Field wiring", according
to the wiring diagrams and according to local laws and regulations.
2. Fuses, circuit breakers, or protection devices
Check that the fuses or the locally installed protection devices are
of the size and type specified in the chapter "TECHNICAL
SPECIFICATIONS". Make sure that neither a fuse nor a protection
device has been bypassed.
3. Backup heater circuit breaker
Do not forget to turn on the backup heater circuit breaker in the
switchbox (it depends on the backup heater type). Refer to the
wiring diagram.
4. Booster heater circuit breaker
Do not forget to turn on the booster heater circuit breaker (applies
only to units with optional domestic hot water tank installed).
5. Ground wiring
Make sure that the ground wires have been connected properly
and that the ground terminals are tightened.
6. Internal wiring
Visually check the switch box on loose connections or damaged
electrical components.
7. Fixation
Check that the unit is properly fixed, to avoid abnormal noises
and vibrations when starting up the unit.
8. Damaged equipment
Check the inside of the unit on damaged components or
squeezed pipes.
9. Refrigerant leak
Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak, call your local dealer.
10.Power supply voltage
Check the power supply voltage on the local supply panel. The
voltage must correspond to the voltage on the identification label
of the unit.
11.Air purge valve
Make sure the air purge valve is open (at least 2 turns).
12.Shut-off valves
Make sure that the shut-off valves are fully open
Operating the system with closed valves will damage the
circulated pump!

6.5 Powering up the unit

When power supply to the unit is turned on, "1%~99%" is displayed
on the user interface during its initialisation. During this process the
user interface cannot be operated.

6.6 Setting the pump speed

The pump speed can be selected by adjust
the red nob on the pump, the place that
notch point to indicate the speed of the
pump.
The default setting is the highest speed (III).
If the water flow in the system is too high,
the speed can be set o low speed (I).
The available external static pressure in function of the water flow is
shown in the graph below.
Constant speed ⅠⅡⅢ
80
75
70
65
60
55
50
45
40
35
30
25
20
15
Ⅰ Ⅰ
10
5
0
14 18 22
Water flow [L/min]
70
65
60
55
50
45
40
35
30
25
20
Ⅰ Ⅰ
15
10
5
0
7 11 15
Water flow [L/min]
31
ETHKH160
Ⅲ Ⅲ
Ⅱ Ⅱ
26 30 34 38 42 46
ETHKH80 (N/D)
Ⅲ Ⅲ
Ⅱ Ⅱ
19 23 27 31 35 39
V.1
8
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0