STIEBEL ELTRON HPG-I 04 S Premium - Page 45

INSTALLATION
Specication
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Connections
DHW flow/return push-fit connection 28mm 28mm 28mm 28mm 28mm
Heat source flow/return push-fit connection 28mm 28mm 28mm 28mm 28mm
Heating flow/return push-fit connection 28mm 28mm 28mm 28mm 28mm
Heating water quality requirements
Water hardness °dH ≤3 ≤3 ≤3 ≤3 ≤3
pH value (with aluminium fittings) 8.0-8.5 8.0-8.5 8.0-8.5 8.0-8.5 8.0-8.5
pH value (without aluminium fittings) 8.0-10.0 8.0-10.0 8.0-10.0 8.0-10.0 8.0-10.0
Chloride mg/l <30 <30 <30 <30 <30
Conductivity (desalination) μS/cm 20-100 20-100 20-100 20-100 20-100
Conductivity (softening) μS/cm <1000 <1000 <1000 <1000 <1000
Oxygen 8-12 weeks after filling (softening) mg/l <0.02 <0.02 <0.02 <0.02 <0.02
Oxygen 8-12 weeks after filling (desalination) mg/l <0.1 <0.1 <0.1 <0.1 <0.1
Heat transfer medium requirements on the heat source side
Ethylene glycol concentration, geothermal probe Vol.-% 25 25 25 25 25
Ethylene glycol concentration, geothermal collector Vol.-% 33 33 33 33 33
Values
Min. flow rate, heating m³/h 0.3 0.3 0.3 0.3 0.3
Heating flow rate (EN 14511) at A7/W35, B0/W35 and 5 K m³/h 0.34 0.41 0.48 0.74 0.9
Nominal heating flow rate at B0/W35 and 8K m³/h 0.45 0.71 0.81 1.36 1.59
Available external pressure differential, heating, nominal at B0/W35 and 8K hPa 708 642 603 571 462
flow rate on heat source side at B0/W35 and 3K m³/h 0.5 0.6 0.68 1.08 1.31
Max. flow rate on heat source side at B0/W35 and 3K m³/h 1.05 1.61 1.82 3.1 3.55
Max. available external pressure differential on heat source side at B0/W35 and
3K
hPa 927 702 590 319 74
Internal volume, heating side l 28.4 28.4 28.4 29.1 29.1
Internal volume, source side l 26.5 26.5 26.5 27.9 27.9
Expansion vessel pre-charge pressure on the heating side MPa 0.15 0.15 0.15 0.15 0.15
Expansion vessel volume on the heating side l 24 24 24 24 24
Expansion vessel pre-charge pressure on the source side MPa 0.05 0.05 0.05 0.05 0.05
Expansion vessel volume on the source side l 24 24 24 24 24
Conversion: 1m
3
/h = 16.67l/min
Further details
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Maximum altitude for
installation
m 2000 2000 2000 2000 2000