AHG Solutions Guide_Edition 2.7

Contents
Moorea I - Condensing Boilers
Features
• Very high efficiency up to 108 %
• Wide modulation range
• No capacity constraints
• Low pollution discharges
• Small footprint & weight limits
• Install up to 16 boilers in cascade
• Very quiet operation
Advantages
• Outputs available from 125 to 610 kW
• Maximum energy utilisation
• Efficiency of up to 108% net (97.5% gross)
• High modulation range from 16% to 100% of nominal
output (6.25 to 1)
• Heat exchanger profile designed to ensure highly
efficient heat transfer
• Compact dimensions and small footprint
• Lightweight aluminium/silicon heat exchanger
• Top mounted hydraulic and flue connections revised
• Easier to connect and less space needed for
working access
• NOx 35mg/kWh
CONDENSING &
CONVENTIONAL BOILERS
Application Examples
Cascade without
booster pump
Not to be used if there are any
high temperature circuits 60/80
°C (no instant DHW) the motorised
2-channel valves isolate the boilers
when they are not operating. On
start up the boilers are blocked until
their respective isolating valves are
fully open. The Cascade function is
integrated and a BUS module just
needs to be added to each boiler
regulator.
Moorea I HTE
125-610
Hot Water Tank
Optimising the condensing
"Cold" returns are used more,
Thanks to the buffer tank, short
cycles at high temperature are made
smoother: loop losses, low drawing.
The time for the boiler to reach its
temperature is covered by the buffer
tank; the tank's contents must be at
least 2.5 l /kW of installed power at
high temperature.
Moorea I HTE
125-610
Primary Buffer Tank
105