Assembling The Appliance; Commissioning; Initial Start-Up - STIEBEL ELTRON WWK 221 electronic Bedienung Und Installation

INsTALLATIoN

Commissioning

Example 1 : Power-OFF signal with own 230 V phase
X0
GNYE
PE
PE
PE
BU
N N
N
BN
L
L
L
2
2
1
1
N
EVU
L1 / L2 / L3
EVU Power supply utility
BN Brown
BU Blue
GNYE Green/yellow
Example 2 : Photovoltaic signal via on-site relay and phase
routed outside the appliance
Note
The relay in the inverter must meet the following re-
quirements:
- Potential-free relay (240 V AC / 24 V DC, 1 A) with
N/O contact
- Adherence to safety regulations and standards for
safety extra low voltage
- The switching output must be programmed so that
the relay closes or opens if certain limits are exceed-
ed or undershot (inverter output level).
If necessary, check with the inverter manufacturer wheth-
er the product meets the stated criteria.
X0
PE
GNYE
PE
PE
N
BU
N N
L
BN
L L
2
2
1
1
1
1 Inverter (floating contact)
BN Brown
BU Blue
GNYE Green/yellow
The inverter power feed is usually located at a central distribution
point (e.g. in the main fuse box).
www.stiebel-eltron.com

10.6 Assembling the appliance

X3
3
11. Commissioning
3
2
2
1
1

11.1 Initial start-up

11.1.1 Fan setting subject to pressure drop
The appliance requires a constant air flow rate of 350 m³/h to
operate correctly. If an air duct is connected, the fan output must
be adjusted in the appliance menu due to the resulting pressure
losses. The factory setting is 40 %, intended for recirculation air
mode.
Standard system with 5 m air duct (DN 160) and two 90° bends
Folded spiral-seam tube
X3 90° bend (r = 1 * d)
3 Intake grille
Total
3
2
f Set the fan output to 47 % in the controller menu. f
2
1
1
Note
f Refit the appliance cover after completing your f
work. See chapter "Maintenance and cleaning / Fit-
ting the appliance cover").
WARNING Electrocution
Never operate the appliance when the casing is open,
without a cover or without side air connectors.
Note
Fill the DHW cylinder before switching on the power
supply to the appliance. The appliance is equipped with
boil-dry protection to prevent operation with an empty
DHW cylinder.
Note
Following an interruption to the power supply, compres-
sor operation remains blocked for at least one minute.
The PCB delays the electrical start-up by one minute,
during which the appliance initialises. If the compressor
subsequently fails to start, it may be locked out by addi-
tional safety devices (motor overload relay and high pres-
sure switch). This block should lift after 1 to 10 minutes.
Length or Pressure drop per
pce m or per pce [Pa]
5
2
2
WWK 221-301 electronic |
Pressure
drop [Pa]
2 10
5.5 11
6.2 12.4
33.4
65