Pipe Installation; Pressure Drop Diagram - Nibe VPB 500 Installation And Maintenance Instructions Manual

GB
Installation/Maintenance

Pipe installation

The water heater must be supplied with a thermometer
and pressure gauge as well as shut-off valve, drain valve,
non-return valve, mixing valve, safety valve, and vacuum
valve as per applicable standards.
The supplied drain valve with corresponding plug is in-
stalled as follows:
1. Remove the compression ring and compression ring
nut from the drain valve.
2. Install the valve using the existing compression ring
and compression ring nut on the drain pipe.
3. Replace the compression ring with a plug on the open
part of the drain valve.
The heater must be supplied with a mixing valve, which
limits the temperature of outgoing hot water to 60°C.
If this valve is not fitted, some other measure must be
taken to prevent the risk of scalding.
The safety valve must have a maximum opening pres-
sure in accordance to the applicable regulations (howev-
er max 10 bar/1.0 MPa). The overflow pipe must be the
same size as the safety valve. The overflow pipe must be
routed downwards along its entire length and be frost-
proof. It must run freely over a drain.
The coils in VPB 1000 must be connected in parallel (see
image below). The venting nipple with corresponding
T-pipe connector must be installed at the highest point
on the upper coil.
Note!
Fit the cover discs before commencing pipe
installation.
8

Pressure drop diagram

Primary side (coil).
40
35
30
25
20
15
10
5
0
0 0,1
Electrical connections
Note!
Electrical installation and service must
be carried out under the supervision of a
VPB 500 can be supplemented with an immersion heat-
er with a maximum output of 9 kW.
VPB 750, 1000 can be supplemented with up to two im-
mersion heaters, maximum output of 2x9 kW.
Each immersion heater is supplemented with junction
box type K11 (2 pole thermostat, 3 pole temperature
limiter). Do not modify or reconnect!
Separate supply from group central is routed to each im-
mersion heater.
Note!
The water heater must be completely filled
with water before it is connected on the
VPB 500, 750, 1000
Pressure drop coil
Tryckfall värmebärarslinga
VPB 500, 750
0,2 0,3 0,4 0,5 0,6 0,7
Flow (l/s)
Flöde (l/s)
qualified electrician.
electrical side.
VPB 1000
0,8 0,9 1 1,1