Operating Instructions and Installation Instructions

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VARMAX TWIN - Installation, Use and Maintenance
3.4. Operating conditions
MODELS
550 640 780 900
Max fl ow temperature setting °C 85
Max fl ow temperature °C 88
Maximum safe temperature °C 110
Max service pressure
hPa
(bar)
6000
(6)
Min cold pressure
hPa
(bar)
1000
(1)
Hydraulic pressure loss at ∆T 20 per generator
daPa
2 or 3 tapping version 820 1185 770 970
4 tapping version
Main exchanger
Condenser
790
50
1060
65
660
190
840
230
Nominal water fl ow rate (P/20) VARMAX TWIN m
3
/h 23 26.8 32.8 37.8
Nominal water fl ow rate (P/20) per generator m
3
/h 11.5 13.4 16.4 18.9
Maximum water fl ow rate (P/10) per generator m
3
/h 23.0 26.8 32.8 37.8
Total water content (2 generators) L 478 478 574 574
Total weight without water (2 generators) kg 1050 1050 1240 1240
Installation premises temperature (min / max) °C 5 and 45
Installation premises relative humidity between 5% and 95%
Protection level IP20
Maximum installation altitude m 2000
3.5. Electrical connection
MODELS
550 640 780 900
Electrical supply V 230 V AC (+10% -15%), 50Hz
Electrical power consumed at Qn (excluding
accessory) VARMAX TWIN
W 476 704 960 1320
Electrical power consumed in standby mode
VARMAX TWIN
W10
Maximum length of sensor cables m
DHW sensor: 10
Outdoor sensor: 40 in 0.5 mm² (120 in 1.5 mm²)
Ambient thermostat: 200 in 1.5 mm²
Room thermostat: 200 in 1.5 mm²
Power terminal output per generator
V 230V AC (+10%, -15%)
A 5 mA at 1A