nilan VPL 28 User manual

INSTALLATION INSTRUCTIONS
CTS602 HMI BY NILAN
VPL28 (English)
Version 3.10 - 19.07.2019

TABLE OF CONTENTS
Safety
Power supply................................................................................................................................................................................................................................................................... 4
Disposal............................................................................................................................................................................................................................................................................................. 4
Ventilation unit............................................................................................................................................................................................................................................................. 4
Heatpump .......................................................................................................................................................................................................................................................................... 4
General information
Introduction.................................................................................................................................................................................................................................................................................. 5
General information prior to installation.........................................................................................................................................................................................5
Unit type........................................................................................................................................................................................................................................................................................... 6
Product description..................................................................................................................................................................................................................................................6
Dimensional drawing.............................................................................................................................................................................................................................................. 7
Functional diagram................................................................................................................................................................................................................................................... 8
Accessories................................................................................................................................................................................................................................................................................... 9
FU28 heat pipe...............................................................................................................................................................................................................................................................9
Electrical pre-heating element....................................................................................................................................................................................................................9
Expansion PCB................................................................................................................................................................................................................................................................9
Electrical after-heating element...............................................................................................................................................................................................................9
Water after-heating element incl. regulation.............................................................................................................................................................................9
EM-box................................................................................................................................................................................................................................................................................ 10
Water trap....................................................................................................................................................................................................................................................................... 10
Vibration absorbers.............................................................................................................................................................................................................................................10
Flexible sound damper...................................................................................................................................................................................................................................... 10
Set up
Installation..................................................................................................................................................................................................................................................................................11
Positioning the unit............................................................................................................................................................................................................................................... 11
Installing the unit.....................................................................................................................................................................................................................................................11
Electrical installation
Electrical connections....................................................................................................................................................................................................................................................12
Safety.................................................................................................................................................................................................................................................................................. 12
Connections overview....................................................................................................................................................................................................................................... 12
Control panel............................................................................................................................................................................................................................................................................13
HMI User panel........................................................................................................................................................................................................................................................... 13
Wall bracket.................................................................................................................................................................................................................................................................. 14
Connecting the control panel.....................................................................................................................................................................................................................14
Electrical connection of the unit.........................................................................................................................................................................................................................15
Power supply................................................................................................................................................................................................................................................................15
Unit..........................................................................................................................................................................................................................................................................................15
Electrical connection accessories.................................................................................................................................................................................................................... 16
FU28 heat pipe........................................................................................................................................................................................................................................................... 16
External electrical pre-heating element.......................................................................................................................................................................................17
Electrical after-heating element........................................................................................................................................................................................................... 18
Water comfort heater........................................................................................................................................................................................................................................19
Mounting of expansion PCB on CTS602 circuit board....................................................................................................................................................21
Electrical connection - other.................................................................................................................................................................................................................................. 23
Connection to user selection and modbus.................................................................................................................................................................................. 23
Fire connection.......................................................................................................................................................................................................................................................... 24
Plumbing installation
Condensate drain................................................................................................................................................................................................................................................................25
Important information...................................................................................................................................................................................................................................... 25
Connection side.........................................................................................................................................................................................................................................................25
Plumbing connections - accessories.............................................................................................................................................................................................................. 26
Water trap with ball (option).......................................................................................................................................................................................................................26
2

Ventilation installation
Duct system.............................................................................................................................................................................................................................................................................. 27
Legislation...................................................................................................................................................................................................................................................................... 27
Ducts..................................................................................................................................................................................................................................................................................... 27
Unit..........................................................................................................................................................................................................................................................................................27
Extract air........................................................................................................................................................................................................................................................................28
Supply air......................................................................................................................................................................................................................................................................... 28
Roof stacks.................................................................................................................................................................................................................................................................... 28
Balancing...................................................................................................................................................................................................................................................................................... 29
Important information...................................................................................................................................................................................................................................... 29
VPL28 (English) BY NILAN
3

Safety
Power supply
CAUTION
Always disconnect the power supply to the unit if an error occurs that cannot be rectified via
the control panel.
CAUTION
If an error occurs on electrically conductive parts of the unit, always contact an authorised
electrician to rectify the error.
CAUTION
Always disconnect the power supply to the unit before opening the unit doors, for instance for
installation, inspection, cleaning and filter change.
Disposal
Ventilation unit
Nilan’s units consist mainly of recyclable materials. They must, therefore, not be
mixed with household waste, but must be delivered to your local recycling center
for disposal.
Heatpump
Concerning disposal of units with heat pumps, it is important to contact the local
authorities for information about correct handling of these. The heatpump
contains the refrigerant R134a, which is harmful to the environment if not
handled correctly.
4

General information
Introduction
General information prior to installation
The following documents are supplied with the unit:
• Installation instructions
• Software instructions
• User manual
• Wiring diagram
Instructions can be downloaded from Nilan’s website: https://www.nilan.dk/en-gb/frontpage/
download
If you have questions regarding installation of the unit after having read the instructions, contact your
nearest dealer of Nilan products. You can find Nilan dealers on www.nilan.dk/en-gb/frontpage/
download/dealers.
The purpose of these instructions is to advice the installer on correct installation and maintenance of
the unit.
ATTENTION
The unit must be started up immediately after installation and connection to the duct system.
When a ventilation unit is not in operation, humidity from the rooms may penetrate into the
ducts and create condensation. Condensate water may leak out of the valves and damage
furniture and floors. Condensation may also form inside the unit, which can damage its
electronics and fans.
The unit is delivered fully tested and ready for operation.
VPL28 (English) BY NILAN
5

Unit type
Product description
VPL28 is a ventilation unit that allows for active heat recovery via a high-efficiency heat pump. The
unit is intended for air volumes up to 1.000 m3/h at 100 Pa external duct pressure.
The unit extracts humid and vitiated air from the dwelling via bathroom, lavatory, kitchen and utility
room. It blows fresh air into living areas such as living room, bedrooms and study. Cold outdoor air is
heated in the heat exchanger by warm extract air. If the supply air/the dwelling needs heating, the heat
pump will heat up the supply air, depending on the room temperature. VPL28 has a reversible cooling
circuit and it can therefore cool the supply air in the summer.
As a standard, VPL28 is supplied with an ISO ePM1 65-80% (F7) filter in outdoor air and an ISO ePM10
(M5) in extract air.
The unit Front open
1. Outdoor air duct connection 10. Supply air fan
2. Supply air duct connection 11. Extract air fan
3. Extract air duct connection 12. Condensate drain
4. Discharge duct connection 13. Control system
5. Electrical connection 14. Evaporator
15. Condenser
16. Compressor
6

Dimensional drawing
All measurements are in mm.
171
471294
285
Ø250
161
472293
570
405
5
700
740
65
765
Connections:
1. Outdoor air
2. Supply air
3. Extract air
4. Discharge air
5. Condensate drain
VPL28 (English) BY NILAN
7

Functional diagram
Heating function Cooling function
T5
T6
2
4
6
5
TC
TC
T1 1
3
T2
T5
T6
2
4
6
5
TC
TC
T1 1
3
T2
T7
TC
T9
Connections
1. Outdoor air
2. Supply air
3. Extract air
4. Discharge air
5. Condensate drain
6. Electrical connection
Automation
T1: Outdoor air sensor
T2/T7: Supply air sensor
T5: Condenser sensor
T6: Evaporator sensor
T9: Water after-heating element
T10:Extract air sensor (room temperature)
8

Accessories
FU28 heat pipe
An FU28 heat pipe raises the temperature of the outdoor air a fraction. This
increases the efficiency of the heat pump considerably during the cold season.
In most cases if you install an FU28 heat pipe, an after-heating element with a
mixing circuit will not be necessary for the supply air to remain of reasonable
temperature.
Electrical pre-heating element
When the outdoor temperature falls below 0 °C, the efficiency of the heat pump
will decrease. If there is no room to install an FU15 / FU28 heat pipe, you would
benefit from installing a pre-heating element. This ensures that the heat pump
remains highly efficient.
The pre-heating element ensures that the temperature of the outdoor air in the
unit does not fall below 0 °C. It has a regulator that ensures minimal energy
consumption.
Expansion PCB
With an expansion PCB, the features of the CTS 602 control expand option to use
user select 2.
Electrical after-heating element
With an electrical after-heating element you can increase the supply air
temperature to the desired level. Electrical after-heating elements are supplied
for mounting in the supply air duct. Included are the necessary sensors.
Water after-heating element incl. regulation
With a water after-heating element you can increase the supply air temperature
to the desired level. The water after-heating element is for duct mounting and
should be connected to the primary heat supply.
It is supplied with a two-way regulation valve, a temperature sensor and a frost
thermostat.
VPL28 (English) BY NILAN
9

EM-box
With an EM box it is possible to divide the extract air between the kitchen and the
bathroom.
If a cooker hood is connected to the unit and is switched on, extract air from the
bathroom will be reduced slightly to allow sufficient air for the cooker hood to
extract kitchen fumes.
The EM-box has a fitted metal filter that clears the air in the cooker hood of
grease particles effectively, and thereby protects the unit.
Water trap
To ensure that condensate water can drain freely, a water trap must be installed.
You should check regularly that there is water in the trap. The water trap may
dry out during late spring, summer and autumn, when no condensation is formed.
If the water trap dries out, air will be sucked into the unit and condensate water
will not be able to drain. This will cause water damage.
Nilan’s water trap contains a ball that ensures that no air is sucked into the unit
and that condensate water can drain freely.
Vibration absorbers
Four vibration absorbers are placed under the unit to ensure effective softening
of the vibrations of the unit against its foundation.
Flexible sound damper
To make it easy to service the unit in the future, we recommend that you fit a
flexible connection between the unit and the duct system.
Nilan's flexible sound damper absorbs sounds effectively from both the duct
system and from roof stacks.
10

Set up
Installation
Positioning the unit
ATTENTION
When positioning the unit, you should always consider future services and maintenance.
It must be easy to replace filters and it must be possible to replace, for instance, fans and other
components.
ATTENTION
It is recommended that you leave a minimum of 60 cm of clear space in front of the unit.
ATTENTION
The unit must be level to enable proper drainage from the condensate tray.
The unit makes little noise and produces only weak vibrations, but you should still take into account
potential vibrations that can spread from the unit to individual building components. In order to
separate the unit from its foundation, it is therefore recommended that you install vibration absorbers
under the unit. There should be approx. 10 mm distance to other building components and to
permanent fixtures.
Installing the unit
Vibration absorbers
front and rear
Vibration absorbers
front and rear
ATTENTION
The unit must be installed on a level and firm surface.
VPL28 (English) BY NILAN
11

Electrical installation
Electrical connections
Safety
ATTENTION
All work must be carried out by qualified persons and in compliance with existing legislation and
regulations.
ATTENTION
It is important that the power is off, if you do work to the electrical components of the unit.
It is important to check that wires are not damaged or squeezed during connection and use.
Connections overview
Facing the unit from the front, the electrical connections are placed on the left side of the unit.
1. Connecting 230V (remember electrical grounding)
2. Connecting the control panel
2
1
12

Control panel
HMI User panel
The user panel is supplied with 1½m cable. Connect the panel to the CTS602 control system in the unit
using a CAT.5e cable (max. length 50 m).
ATTENTION
If you want a longer cable, use an ordinary LAN-cable, not a crossover cable, max. 50 m.
If you want to extend the cable, please be aware of the following:
Installation in the RJ12 plug
1. Empty
2. Empty
3. Green (A2)
4. Green/white (B2)
5. Brown (12V)
6. Brown/white (GND)
Use RJ12 plug and RJ12 crimping tool.
Installation in the 8 pole plug
1. Brown/white (GND)
2. Green/white (B2)
3. Green (A2)
4. Empty (User selection)
5. Empty (User selection)
6. Empty (A1)
7. Empty (B1)
8. Brown (12V)
VPL28 (English) BY NILAN
13

Wall bracket
Mount the HMI panel on the wall using the integrated wall bracket.
The panel should be visible so it is possible to change settings and to monitor warnings or alarms
regarding operation.
The wall bracket is located at the back of
the panel. You can detach it by loosening
the bracket at the bottom of the panel.
You can then remove it.
Mount the bracket on the wall using 2
screws.
Click the RJ12 plug into place at the
bottom of the HMI panel. The wire can
run down along the wall, into the wall or
through the groove at the back of the
panel.
Connecting the control panel
14

Electrical connection of the unit
Power supply
CAUTION
The power supply, including a safety switch, must be installed by an authorized electrician.
A power cable for connection to a power socket is included. It is important that the unit is
earthed.
The unit is supplied with an EU plug for a 230V power supply. This means that, in principle, you
have no protection of electrical grounding. You can secure electrical grounding by connecting
the plug to a socket with a ground pin.
You can also connect an adapter for a plug with a ground pin. You can fit this plug adapter on
the unit, so that the unit is secured electrical grounding to the earthing system.
Unit
Safety switch
Power supply
VPL28 (English) BY NILAN
15

Electrical connection accessories
FU28 heat pipe
Having an FU28 heat pipe installed before the unit will increase VPL28 COP (efficiency) considerably;
especially at low outdoor temperatures.
VPL28 FU28
Outdoor air
Extract air
The temperature sensor T1, T10 and the humidity sensor RH must be moved as illustrated. It is
important that they are moved and placed before the heat pipe in order for the unit to operate
correctly.
Note! A heat pipe is not a recuperative or a regenerative heat exchanger. Therefore it does not have to
comply with requirements for temperature efficiency, but is included in the COP calculation of VPL28.
16

External electrical pre-heating element
If installing an FU28 heat pipe is not an option, you can purchase an external electrical pre-heating
element in order to secure efficiency of the heat pump.
Install the electrical pre-heating element together with the required temperature sensor in the
outdoor air duct before the unit.
1x230V ~ 50 Hz max. 16A
7 8
Min. 40 cm
T
It is important that the sensor is placed at least 40 cm from the pre-heating element to achieve correct
regulation.
The pre-heating element has a three-step safety system that prevents overheating.
1. An operating thermostat regulates the heating and ensures that the supply air temperature does
not fall below -1 °C
2. There is a max. thermostat, which shuts down the preheating element if the temperature rises
above 50 °C (For vertical mounting with airflow downwards, the preheating surface will switch off
at 70 ° C).
3. A safety thermostat switches off the pre-heating element if the temperature exceeds 100 °C.
Then, you must reset it manually.
Minimum air volume at Ø200: 170m³/h.
ATTENTION
The heating element must be insulated with a fire retardant insulation material. The cover of
the connection box, however, must not be insulated.
Dimensional drawing:
Ø125/160/200
50
370
270
50
50
Positioning options:
VPL28 (English) BY NILAN
17

Electrical after-heating element
An after-heating element is necessary if you want to control the supply air temperature.
The electrical after-heating element can be purchased for installation in the supply air duct. The
required sensor and connectors for the unit are included.
1x230V ~ 50 Hz max. 16A
Min. 50 cm Min. 40 cm
T7
T7
T7

T2
0-10V
GND
T7
0-10V
GND
Wiring diagrams are supplied with the products.
Run the wires along the duct and install them in the screw terminal that has been fitted on the unit.
ATTENTION
The T7 temperature sensor has been fitted after the heating element. The T2 sensor MUSTbe
disconnected from the circuit board. The T7 sensor should then be connected to where the T2
sensor was previously connected up.
ATTENTION
The heating element must be insulated with a fire retardant insulation material. The cover of
the connection box, however, must not be insulated.
Dimensional drawing:
Ø125/160/200
50
370
270
50
50
Positioning options:
18

Water comfort heater
For precision control of supply air temperature, a comfort heater is required.
The water after-heating element can be purchased for installation in the supply air duct. The required
sensors and connectors for the unit are included.
Snip the RJ 45 plug at the heat-shrink sleeve connection and install the wire on the circuit board.
ATTENTION
The T7 temperature sensor has been fitted by the heating element. The T2 sensorMUST
detached in the PCB and T7 connect the sensor where T2 sensor was connected.
Connecting of sensors
B3
T7
T9
Min. 50 cm
T7
T9
B3 T2
Min. 40 cm

T7: Temperature sensor - T9: Temperature sensor heating element - B3: Frost protection
Run the wires along the duct and through a grommet on the unit down to the circuit board. Connect the
wires in accordance with the wiring diagram.
VPL28 (English) BY NILAN
19

Electrical connection of regulation valve
N
L1
0-10V
GND
PE
Run the wires along the duct and through a grommet on the unit down to the circuit board. Connect the
wires in accordance with the wiring diagram.
Dimensional drawing:
83
310
440
Ø125/160/200
238
22
32
31
300
3/4" RG
3/4" RG
20