STIEBEL ELTRON LWZ 304 SOL - Page 57

ENGLISH
www.stiebel-eltron.com LWZ304-404 SOL | 57
INSTALLATION
Specication
LWZ 304 SOL LWZ 404 SOL
Versions
Refrigerant R407C R407c
IP rating IP1XB IP1XB
Filter class, extract air G4 G4
Filter class, ventilation air M5 M5
Filter class, outdoor air G1 G1
Application range, living space m² < 200 < 220
Refrigerant charge kg 2.5 2.7
Dimensions
Height when tilted mm 2020 2020
Height mm 1885 1885
Width mm 1430 1430
Depth mm 812 812
Weights
Weight, function module kg 238 243
Weight, cylinder module kg 177 177
Weight, empty kg 415 420
Weight, full kg 665 670
Connections
Heating connection DN 22 DN 22
DHW connection DN 22 DN 22
Solar circuit connection DN 22 DN 22
Condensate drain mm 22 22
Supply air/extract air connection DN 160 DN 160
Outdoor air/exhaust air connection mm 410x155 oval 410x155 oval
Values
Heat recovery level up to % 90 90
Recommended max. rated building heat load kW 7.5 9
Heating flow rate (EN 14511) at A7/W35, B0/W35 and 5 K m³/h 0.9 1.3
Min heating flow rate m³/h 0.55 0.7
Supply air/extract air flow rate m³/h 80-300 80-300
Nominal air flow rate m³/h 240 240
Outdoor air/exhaust air flow rate m³/h 1000 1000
Available external pressure, ventilation at 230m
3
/h Pa 100 100
Available external pressure outdoor air/exhaust air Pa 50 50
DHW safety valve MPa 1 1
Max. flow temperature °C 60 60
Safety valve, heating MPa 0.3 0.3
Expansion vessel volume l 15 15
Expansion vessel - pre-charge pressure MPa 0.075 0.075