Installation manual
installation manual TWIN 80 EN
26
3.8. CASCADE
3.8.1. Power mode (default)
• Menu parameter “o” = 01 (default)
• Both units run simultaneously.
When the room thermostat or space unit indicates that heat is
required for central or under floor heating, both units will heat
simultaneously. The Master print calculates the system flow
temperature and divides the necessary power over both units
equally. The speeds of both fans are automatically adapted to
the heat required, also with the use of an on/off thermostat.
When the room thermostat or space unit indicates that the
desired temperature has been reached, the central heating
water is no longer heated. The unit pumps will continue to run
for a previously set time to distribute the heat evenly over the
heating installation.
menu parameter “o” = 01
Heat input (gross) 16.2 – 82.2 kW
Heat input (net) 14.6 – 74.0 kW
Nominal output at 80/60ºC 14.1 – 72.0 kW
Nominal output at 50/30ºC 15.6 – 75.3 kW
Efficiency at 80/60ºC (net)
Low load = 96.6 %
High load = 97.2 %
Efficiency at 50/30ºC (net)
Low load = 106.9 %
High load = 101.8 %
3.8.2. Comfort mode (field adjustable)
• Menu parameter “o” = 00
• At low heat demand the units run independently.
When the room thermostat or space unit indicates that heat is
required a single unit will start-up, while the other unit remains
stand-by. The unit priority will change each 24 hours.
When the heat required is twice low fire, the second unit will be
started as well. Both units will heat simultaneously. The Master
print calculates the system flow temperature and divides the
necessary power over both units equally. The speeds of both
fans are automatically adapted to the heat required, also with
the use of an on/off thermostat.
menu parameter “o” = 00
Heat input (gross) 8.1 – 82.2 kW
Heat input (net) 7.3 – 74.0 kW
Nominal output at 80/60ºC 7.0 – 72.0 kW
Nominal output at 50/30ºC 7.8 – 75.3 kW
Efficiency at 80/60ºC (net)
Low load = 96.0 %
High load = 97.2 %
Efficiency at 50/30ºC (net)
Low load = 106.3 %
High load = 101.8 %