Nibe VPB 500 UK User manual

MOS 1536-4
VPB 500 UK
031421
INSTALLATION AND MAINTENANCE INSTRUCTIONS
VPB 500 UK
LEK

33VPB 500 UK 3
Installation
The hot water heater is unscrewed from the pallet and
lifted into position, use the lifting eyes if necessary. The
water heater must be installed in an upright position.
The four feet are height-adjustable. VPB 500 UK can be
equipped with the following immersion heaters, con-
nection dimension G2. When installing the water heat-
er, ensure that there is enough room for removing the
immersion heater in front of the connection area, see
following table.
Fit the supplied cover discs before pipe installation. The
cover discs, with self-adhesive backs, must be fitted on
the relevant connection by pushing them over the con-
nections.
All connections (including those not used) must be insu-
lated to minimise idle losses.
This installer manual must be left with the customer.
Immersion heater Power output Free space
IU 31 1500 W 250 mm
IU 33 2250 W 260 mm
IU 34 3000 W 280 mm
IU 36 4500 W 400 mm
IU 39 6000 W 400 mm
IU 310 7500 W 400 mm
IU 311 9000 W 400 mm
General
VPB 500 UK is a water heater which is suitable for con-
nection to heat pumps.
The water tank consists of a steel jacket, with a copper
lining to protect against corrosion. The water heater is
equipped with a copper coil of finned tube.
The water heater is designed and manufactured for a
maximum cut-off pressure of 6 bar. Maximum permitted
temperature is 95°C.
The insulation is polyurethane, which provides excellent
heat insulation. The insulation and outer shell of grey
plastic is easy to remove.
The VPB is equipped with a immersion heater connec-
tion and a submerged tube for control of water heating.
Removing part of the insulation
The backside of the insulation on VPB can be removed
in order to facilitate handling in confined spaces (this
will save 50 mm).
1. Remove all screws along the joining plates.
2. Lift off the top cover.
3. Pull the insulated jacket halve straight off.
Carry out assembly in reverse order. If the screws are
difficult to fit in the old holes, the plate can be turned
upside down, which produces new holes in the insu-
lated jacket halves.
General
LEK
Ø 760 mm with insulation 50 mm less without insulation
LEK
This appliance can be used by children aged from 8 years and above and per-
sons with reduced physical, sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision or instruction concer-
ning use of the appliance in a safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and user maintenance
shall not be made by children without supervision.
Rights to make any design or technical modifications are reserved.
©NIBE 2015.

444 VPB 500 UK
Pipe installation
Warning to the installer!
This installation is subject to building
regulation approval, notify the local
Authority of intention to install.
Pipe installation
No valve should be fitted between the expansion
valve and the storage cylinder.
Valve outlet size Minimum size of
discharge pipe
Minimum size of
discharge pipe from
tundish
Maximum resistan-
ce allowed, expres-
sed as a length
of straight pipe
(i.e. no elbows or
bends)
Resistance created
by each elbow or
bend
G1 / 2 15 mm 22 mm up to 9 m 0,8 m
G1 / 2 15 mm 28 mm up to 18 m 1,0 m
G1 / 2 15 mm 35 mm up to 27 m 1,4 m
G3 / 4 22 mm 28 mm up to 9 m 1,0 m
G3 / 4 22 mm 35 mm up to 18 m 1,4 m
G3 / 4 22 mm 42 mm up to 27 m 1,7 m
G1 28 mm 35 mm up to 9 m 1,4 m
G1 28 mm 42 mm up to 18 m 1,7 m
G1 28 mm 54 mm up to 27 m 2,3 m
Table sizing of copper discharge pipe for common
temperature relief valve outlet sizes
Please note that the connection of the T&P-valve
should not be used for any other purpose.
Hard water areas
Usually, there should not be a problem in installing VPB
500 UK in areas of hard water as the operating tempe-
rature is 50-60 °C.
Cleaning the heating system
When the water heater and the heating system have
been filled with water, VPB 500 UK 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
heating 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.
600 mm maximum
Matal discharge pipe from tundish,
with continous fall.
300 mm
minimum
Tundish
Safety device
(e.g. temperature
relief valve)
Metal discharge pipe from
temperature relief valve to tundish
Possible wall
Discharge below
fixed grating
Fixed grating
Trapped gulley
Pipe installation must be carried out in accordance with
current norms and directives.
The total volume is 496 litres in the waterheater.
The pressure vessel is approved for max 6,0 bar (0,6
MPa) in the water heater and 3 bar (0,3 MPa) in the coil.
Discharge pipes from tundishes shall have an vertical
section of pipe at least 300 mm long, before any el-
bows or bends in the pipework. See following picture.
Copper inserts should be fitted when a plastic pipe or
annealed copper pipe is used.
A discharge pipe must be routed from the pessure relief
valve to a suitable drain. The size of the discharge pipe
must be the same as on the pessure relief valve. The
discharge pipe must be routed downwards to prevent
water pockets and must be frost proof. The outlet of
the discharge pipe should be visible and clearly away
from any electrical components.

555VPB 500 UK
Electrical connections
VPB 500 can be supplemented with an immersion heat-
er with a maximum output of 9 kW.
The 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 the im-
mersion heater.
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 expansion relief valve must be set to 6 bar
(0.6 MPa). The overflow pipe must be the same size as
the valve. The overflow pipe must be routed downwards
along its entire length and be frostproof. It must run
freely over a drain.
The water heater must be completely filled
with water before it is connected on the
electrical side.
Note!
Electrical installation and service must
be carried out under the supervision of a
qualified electrician.
Note!
Fit the cover discs before commencing pipe
installation.
Note!
Pressure drop diagram
Primary side (coil).
0
5
10
15
20
25
30
35
40
0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1
1,1
Tryckfall (kPa)
Flöde (l/s)
Tryckfall värmebärarslinga
VPB 500 VPB 750
VPB 1000
Pressure drop, coil
Flow (l/s)
Pressure drop (kPa)
Installation

666 VPB 500 UK
Filling
Fill the water heater as follows
1. Open a hot water tap in the system.
2. Open the shut-off valve on the incoming cold water.
This valve should then be fully open during opera-
tion.
3. The hot water tap can only be shut off when the
water heater is filled, which is when only water
comes out of the tap (initially an air-water mixture
comes out of the tap).
Maintenance
The safety valve must be inspected regularly, about 4
times a year, to prevent blockages.
To inspect the valve, open the safety valve manually and
check that water flows through the overflow pipe. If this
does not happen then the safety valve is defective and
must be changed.
Emptying
1. Turn off the power to the heater.
2. Shutoff the incoming cold water.
3. Open the drain valve.
During draining air must be let into the heater by loos-
ening a hot water heater connector or a hot water tap.
When mounted in locations exposed to the risk of frost,
the hot water heater must be emptied whenever not in
operation. Freezing will result in the heater bursting.
Dealing with malfunctions
If the water fails to heat up, check the fuses in the
distribution box. If none of the fuses have blown, the
reason may be that the temperature limiter has tripped
as a result of a fault in the hot water heater. Once the
fault has been remedied, the temperature limiter can
be reset. This must be done under the supervision of a
qualified electrician.
Service
When servicing is required, contact the main contrac-
tor; you will always need to provide the manufacturing
number (95) and installation date.
Use only manufacturer’s recommended replacement
parts.
Maintenance
If immersion heaters are installed, please
ensure that therminal cut-out are also
installed.
Note!

777VPB 500 UK
Components and dimensions
List of components
Pipe connections
XL 35 Immersion heater connection, G2, internal
thread
XR 1 Lifting eye
XL 10 Drain connection, Ø 22 mm
XL 3 Cold water connection, (solar connection, out),
G50, internal thread
XL 4 Hot water connection, G2, internal thread
XL 9 Docking connection, outgoing to other heat
source Ø 28 mm.
XL 8 Docking connection, incoming from other heat
source Ø 28 mm
XL 5 HWC connection, Ø 15 mm
XL 13 Solar connection, in, Ø 22 mm
HVAC components
UA 2 Submerged tube, docking, Ø 11 mm (int)
UA 3 Submerged tube, solar, Ø 11 mm (int)
Sensors, etc
BT 7 Hot water sensor, top
Miscellaneous
UA 1 Submerged tube, temperature limiter Ø 10 mm
(int)
UL 1 Adjustable feet
PF 3 Serial number plate
Valves
FL 5 T&P valve
Technical specifications
20–55 60
1690
200
Ø 760
XR 1
BT 7
FL 5
UA 1
XL 8
UA 2
XL13
UA 3
XL 3
XL35
XL 9
XL10
UL 1
XL 5
PF 3
XL 4

888 VPB 500 UK
Technical Data
Corrosion protection Copper
Volume, hot water heater litre 490
Volume, coil litre 6
Length, coil m 15.7
Heating surface, coil m25.2
Immersion heater, supply V 230
Immersion heater, maximum output kW 9
Heat transfer, primary 60/50 °C, 50 °C HW temp at the top kW 15.8
Heat content at 50 °C kWh 23
Equivalent amount of hot water (40°C)* litre 590
Heating time 13-60 °C, 9 kW min 80
Re-heating time up to 60 °C, 340 litre min 52
Charging pressure, expansion vessel bar/MPa 3.5/0.35
Max. pressure, incoming cold water bar/MPa 16/1.6
Max. pressure, hot water heater bar/MPa 6/0.6
Max. pressure, primary side bar/MPa 3/0.3
Operating pressure, secondary side bar/MPa 5.5/0.55
Setting, expansion relief valve bar/MPa 6/0.6
Max operating pressure, T&P-valve bar/MPa 7/0.7
Max operating temperature, T&P-valve °C 95
Discharge capacity T&P valve kW 25
Max. power input kW 25
Max. immersion heater length mm 400
Height (excl. feet) mm 1750
Net weight kg 182
Gross weight kg 678
Part no. 083 221
* With a supply temperature of 10°C and hot water usage of 24 l/min.
Energy labelling
Supplier NIBE
Model VPB 500 UK
Energy efficiency class D
Heat loss W 135
Volume l 496
Technical specifications

999VPB 500 UK
Enclosed kit
Accessories
LEK
Expansion vessel with
bracket (106)
L
E
K
Temperature limiter (161)Tundish (108)
LEK
LEK
Flexible hose (Expansion vessel)
LEK
LEK
LEK
Shut off valve (162)
Pressure reduction valve
(148)
LEK
Cold water inlet and expansion
relief valve, water heater (165)
LEK
LEK
LEK
LEK
Plug with cable
Immersion heater IU 31 - IU 311K11 Switching box
Part no 018 893
Enclosed kit/Accessories
LEK
LEK
K13
LEK
K11
K10
LEK

101010 VPB 500 UK

PL
NL
FI
DK
DE
CZ
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