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TECHNICAl INFORMATION
4.5
Gas connection
!
DANGER
Danger of explosion due to leaking gas con-
nection.
• Install a gas counter and gas pressure re-
gulator in the gas supply line.
• Following installation of the boiler, check
the gas connection for leaks.
For gas connection, see chapter 3.4, Fig. 11.
• Route gas connection straight to the rear!
4.6
Hydraulic connection
According to EN 12828:2003, the following safety-techni-
cal equipment is integrated into the boiler:
•
Minimum pressure limiter DBmin
• Safety maximum pressure limiter DBmax
• Water pressure measuring device DBmax + 50%
• Temperature regulator
• Temperature measurement device TBmax + 20%
• Safety temperature limiter
Additional safety equipment may be required depending
on the system configuration.
•
Make sure the return is connected correctly
so as to achieve optimum efficiency.
• To prevent noise emissions, connect the
flow and return pipes to the heating circuit
with flexible compensators.
• If a common return is to be used, user the
low-temperature return.
Low-temperature return
(e.g. underfloor heating)
High-temperature return
(e.g. fan group or calorifier)
Fig. 17
4.6.1 To be provided on site
A pressure expansion tank appropriate for the heating
system, water volume and hydrostatic pressure.
Summary of Contents for UltraGas 1550
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