Protherm Tiger 24 (12) KTZ Operating And Installation Manual - System
Supplied By www.heating spares.co Tel. 0161 620 6677
24
Operating pressure in the heating
system
The heating system (measured on the
boiler) must be filled at least to the hyd-
raulic pressure of 1 bar (corresponds to
a 10 m hydrostatic water column). We re-
commend that you maintain the pressure
within the range 1 – 2 bar. The expansion
vessel capacity is sufficient for up to 70 l
of heating water in the heating system (at
temperature 85 °C).
HeW expansion vessel
Before filling the heating system up, check
pressure in the expansion vessel. The ini-
tial pressure inside the expansion vessel
should be 0.2 – 0.3 bar lower than the as-
sumed pressure in the heating system.
If the heating system is already filled, shut
the HeW valves located underneath the
boiler and, using the drainage valve, relie-
ve the boiler from pressure. Then you can
check the expansion vessel pressure and
if necessary increase the pressure.
Important:
Make sure that the expansion
vessel capacity is sufficient for the volume
of water in the heating system (see instal-
lation design documentation).
Domestic HoW expansion vessel
The expansion vessel is used to balance
the water pressure in the tank. The pres-
sure in the expansion vessel for hot water
should be 0.2 – 0.3 bar higher than the
real HoW pressure in the mains. When
checking the pressure proceed just as for
the HeW expansion vessel.
Mounting the boiler
Fig. 12
4
1
3
2