Product description
6 720 645 817
(2010/09)
35
4.2.2
Burner function
The maximum
Δ
T between flow and return temperature
at rated output is 30 K.
From
Δ
T = 30 K, when no heat is being drawn off, the
burner modulates the boiler output down to the lowest
output. The boiler shuts down only if
Δ
T continues to rise
and exceeds 40 K.
If
Δ
T is too high, the boiler cannot transfer its maximum
output due to its safety circuit.
The restriction of the maximum temperature spread is
designed to ensure safety and the durability of the heat
exchanger.
Take the boiler characteristics into consideration during
system engineering.
4.3
Delivery method
The Suprapur is factory-fitted with check valve and is
delivered preset for natural gas H or L. This enables
rapid installation and easy, quick connection to the
heating system.
Conversion to a different gas type is easy.
The factory-prepared cascade solution is delivered in
modules (two boilers, hydraulic pipework and flue gas
cascade).
For optimum operational reliability and durability, the
flue gas cascade is designed as a negative pressure flue
gas cascade requiring no additional components
(shut-off dampers).