Nibe VPB 200N, Руководство по установке

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General
Pipe installation must be carried out in accordance with
current norms and directives.
Internal support bushes should be fitted when a plastic
pipe or annealed copper pipe is used. The water heater
must be fitted with the requisite valves, such as a safety
valve, shut-off valve, non-return valve, and vacuum valve.
An overflow pipe must be routed from the safety valve
to a suitable drain. The size of the overflow pipe must be
the same as on the safety valve. Route the overflow pipe
from the safety valve enclosed along its entire length and
ensure that it is frost proof. The outlet of the overflow
pipe should be visible and clearly away from any electrical
components.
Overflow water from the safety valves goes via non-
pressurised collecting pipes to a drain so that hot water
splashes cannot cause injury. These non-pressurised col-
lecting pipes shall not be used for anything else. A dis-
charge pipe from the tundish connected to the expansion
relief valve (safety valve) shall also be connected to a drain
in the same way.
Please note that the connection of the T&P-valve should
not be used for any other purpose.
Valves may not be positioned between the expansion
valve and the vessel.
Discharge pipes from tundishes shall have av vertical
section of pipe at least 300 mm long, before any elbows
or bends in the pipework (see following picture).
500 mm maximum
300 mm
minimum
Tundish
Metal discharge pipe from
temperature relief valve to tundish.
Metal discharge pipe from tundish,
with continous fall.
Discharge below
fixed grating.
Fixed grating
Trapped gulley
Possible wall
Safety device
(e.g. temperature
relief valve).
Resistance created by
each elbow or bend Maximum resistance
allowed, expressed
as a lenght of
straight pipe (i.e. no
elbows or bends) Minimum size of dis-
charge pipe from
tundish Minimum size of dis-
charge pipe Valve outlet size
0.8 mm up to 9 m 22 mm 15 mm G1/2
1.0 mm up to 18 m 28 mm 15 mm G1/2
1.4 mm up to 27 m 35 mm 15 mm G1/2
1.0 mm up to 9 m 28 mm 22 mm <G3>/4
1.4 mm up to 18 m 35 mm 22 mm <G3>/4
1.7 mm up to 27 m 42 mm 22 mm <G3>/4
1.4 mm up to 9 m 35 mm 28 mm G1
1.7 mm up to 18 m 42 mm 28 mm G1
2.3 mm up to 27 m 54 mm 28 mm G1
Hard water areas
Usually, there should not be a problem in installing VPB
200N in areas of hard water as the operating temperature
is 50-60 °C.
Cleaning the climate system
When the water heater and the climate system have been
filled with water, VPB 200N must operate at maximum
normal temperature for at least one hour. Thereafter the
system must be drained of water and refilled.
Emptying the system by
1.
Open the filling valve and the drain valve for the cli-
mate system.
2.
Flush the system for some minute. Watch out for
water splashes from the safety valve.
3. Close the valves and check the stainer.
VPB 200N Chapter 4 | Pipe connections 10
4 Pipe connections