STIEBEL ELTRON LWZ 404 SOL Installation Manual

2 | LWZ304-404 SOL www.stiebel-eltron.com
CONTENTS
SPECIAL INFORMATION
INSTALLATION
1. General information �����������������������������������������3
1.1 Relevant documents_____________________________________________ 3
1.2 Standardised output data ______________________________________ 3
2. Safety ���������������������������������������������������������� 3
2.1 General safety instructions ____________________________________ 3
2.2 Instructions, standards and regulations ____________________ 4
2.3 Operation of the appliance in buildings with
combustion equipment _________________________________________ 4
3. Appliance description ���������������������������������������5
3.1 Standard delivery ________________________________________________ 5
3.2 Required accessories ___________________________________________ 5
3.3 Further accessories______________________________________________ 5
3.4 Appliance functions _____________________________________________ 5
4. Preparations ��������������������������������������������������7
4.1 Installation site ___________________________________________________ 7
4.2 Air routing ________________________________________________________ 9
4.3 Sound emissions _________________________________________________ 9
4.4 Electrical installation___________________________________________ 10
4.5 Oxygen diffusion ________________________________________________ 10
4.6 Transport _________________________________________________________ 10
5. Installation �������������������������������������������������� 11
5.1 Siting the function module ___________________________________ 11
5.2 Installing the cylinder module _______________________________13
5.3 Connecting modules ___________________________________________ 14
5.4 Heating water connection _____________________________________ 17
5.5 Water connection _______________________________________________ 18
5.6 Filling the DHW cylinder ______________________________________ 18
5.7 Filling and venting the heating system _____________________ 19
5.8 Condensate drain and overpressure valve _________________ 20
5.9 Power supply ____________________________________________________ 20
5.10 Fitting the appliance casing __________________________________23
5.11 Outdoor air and exhaust air hose installation ____________ 24
5.12 Installing extract air and supply air pipes _________________ 25
6. Commissioning ��������������������������������������������� 26
6.1 Checks before commissioning________________________________ 26
6.2 Commissioning __________________________________________________ 26
6.3 Recommissioning _______________________________________________ 28
7. Settings ����������������������������������������������������� 28
7.1 Menus and parameters ________________________________________ 28
 ACTUAL VALUES _________________________________________________28
 DIAGNOSIS _______________________________________________________ 29
 PROGRAMS ______________________________________________________ 29
 STANDARD SETTING ____________________________________________29
 SETTINGS _________________________________________________________29
 HEATING __________________________________________________________ 29
 DHW _______________________________________________________________ 30
 VENTILATION ____________________________________________________ 32
 COOLING __________________________________________________________34
 SOLAR POWER ___________________________________________________34
 DRY HEATING PROGRAM ______________________________________ 35
 COMMISSIONING ________________________________________________ 36
 CONTRACTOR ____________________________________________________ 36
 ENTER CODE _____________________________________________________ 36
 FAULT SEARCH ___________________________________________________36
 SWITCH ON MANUALLY ________________________________________ 36
 EVAPORATOR ____________________________________________________ 37
 REFRIGERATION UNIT __________________________________________ 37
 PUMPS ____________________________________________________________ 37
 PUMP CYCLES ____________________________________________________ 37
 CONDENSATE PUMP (NO FUNCTION) _______________________ 38
 EMERGENCY MODE AUTO _____________________________________ 38
 POWER-OFF ______________________________________________________ 38
 PROCESS VALUES _______________________________________________38
 PROCESS STATUS _______________________________________________38
 ANALYSIS _________________________________________________________ 38
7.2 Economy settings _______________________________________________ 39
8. Shutdown ��������������������������������������������������� 40
9. Troubleshooting �������������������������������������������� 40
9.1 Exhaust air fan is catching ____________________________________ 40
9.2 Cleaning defrost pan ___________________________________________ 40
9.3 Circulation pump _______________________________________________ 41
9.4 Fault messages in the programming unit _________________ 41
10. Maintenance and cleaning �������������������������������� 45
10.1 Cleaning the air/air heat exchanger ________________________ 45
10.2 Cleaning the outdoor air filter _______________________________ 45
10.3 Cleaning the evaporator fins _________________________________ 45
10.4 Cleaning the condensate drain _______________________________46
10.5 Cleaning the filter ball valve __________________________________ 46
10.6 Replacing the anode ___________________________________________ 47
10.7 Checking the diaphragm expansion vessels _______________ 47
11. Specification ������������������������������������������������ 48
11.1 Dimensions and connections _________________________________ 48
11.2 Wiring diagram _________________________________________________ 49
11.3 Connection examples __________________________________________ 52
11.4 Output diagram _________________________________________________53
11.5 Fan curve _________________________________________________________ 54
11.6 Pump curve ______________________________________________________54
11.7 Application range _______________________________________________ 55
11.8 Sensor resistance values ______________________________________ 55
11.9 Data table ________________________________________________________ 56

STIEBEL ELTRON LWZ 404 SOL Specifications

General

Brand	STIEBEL ELTRON
Model	LWZ 404 SOL
Category	Fan
Language	English