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VÄRMEBARONEN EP 31 300
Pipe installation
Closed system
≤
300 kW and < 105°C
The opening pressure of the safety valve is
determined by the component in the system
that tolerates the lowest pressure.
The boiler:
- can cope with zero flow, from a safety viewpoint.
- has a built-in temperature guard.
- has a built-in level guard.
- can be supplied with a factory installed, option, safety
valve, low and/or high pressure guard.
In accordance with the requirements of EN 12828, the instal-
lation must have:
- At least one safety valve min DN 15, with sufficient blow-off
capacity at the system's operating pressure.
- If the boiler is located at a higher level than users, a level
guard or low-pressure guard is required.
Safety valves are fitted with pressure guards and an automatic
vent valve on the boiler's safety pipe.
Valve for expansion vessel, must be locked in open position.
The discharge pipe from a safety valve must meet the
requirements of EN 12828.
Steam or liquid that flows out of the safety valve when it
opens must be drained safely.
The discharge pipe from the safety valve is dimensioned so
that the blow-off capacity is not impeded.
The discharge pipe must be laid so it cannot freeze, must be
cleaned well and must be laid so that water pockets cannot
form.
There must be drainage from the safety valve discharge pipe,
if there is a risk that the water can remain standing.
Installation must take place according to existing
regulations and standards.
Expansion system - Safety pipe
The electric boiler must be connected to an expansion system.
The figures shown on this page are system principles.
The actual system must be installed according to existing
standards.
Any additional equipment must be installed as indicated
by the manufacturer for its product.
The air vent on the boiler's safety pipe must
always be open. Otherwise, air collects in the
top of the boiler, which leads to disruption
as the float switch is triggered on account
of insufficient water level.
Open system
The boiler's safety pipe must be connected in an unisolatable,
uninterruptible rise to the expansion vessel. To avoid
oxygenation of the water, the distance between the highest
point of the heating system and the expansion vessel must
not be less than 2.5 m.
Pressure height must exceed the pump's. lowest static
pressure on the low side.
To avoid damage in the event of any blockage
in the expansion system, the boiler should be
fitted with a safety valve.
Do not drill into the boiler's cover plates.
Cuttings can damage the boiler's electrical
equipment. M6 bolts are available for fixing
cable trays.
