nilan Compact S Series User manual

Version: 10.00, 18-12-2015
Software-version: 2.31
Compact S
Installation instruction
CTS 602 by Nilan

Contents
Contents.........................................................................................................................................2
Figure table ....................................................................................................................................2
Before starting................................................................................................................................4
Electrical connection....................................................................................................................... 5
Installing Compact S.......................................................................................................................6
Condensation drain/water trap........................................................................................................9
Water connection.......................................................................................................................... 10
Supplementary heating element DHW.......................................................................................... 10
Duct connection.............................................................................................................................11
Electrical heating element............................................................................................................. 12
Start-up and configuration of CTS 602 controls............................................................................ 13
Startup......................................................................................................................................13
CTS 602 configuration .............................................................................................................. 13
Activating the Mainmenu/submenu menu.................................................................................. 13
Activating the SERVICE menu.................................................................................................. 14
Inlet heating.............................................................................................................................. 15
Hotwater ...................................................................................................................................16
Air quality.................................................................................................................................. 17
Air exchange............................................................................................................................. 18
Defrost......................................................................................................................................19
Temp. control............................................................................................................................ 20
Inlet control............................................................................................................................... 21
Room control ............................................................................................................................ 22
Restart......................................................................................................................................23
Preset....................................................................................................................................... 24
Manual......................................................................................................................................25
Modbus..................................................................................................................................... 26
Datalog .....................................................................................................................................27
Fault finding.................................................................................................................................. 28
Maintenance................................................................................................................................. 29
Energy saving............................................................................................................................... 31
Accessories / spare parts ............................................................................................................. 32
Recycling of this HVAC equipment ............................................................................................... 33
Figure table
Figur 1: CTS 602 Control Panel...................................................................................................... 5
Figur 2: Duct Connections..............................................................................................................6
Figur 3: Sketch of Compact S......................................................................................................... 7
Figur 4: Location of temperature sensors ....................................................................................... 8
Figur 5: Location of sacrificial anode............................................................................................. 10
Figur 6: Water connections........................................................................................................... 10
Figur 7: Flexible connection.......................................................................................................... 10
Figur 8: Insulation of ducting..........................................................................................................11
Figur 9: Headlines in the service menu......................................................................................... 14
Figur 10: The "inlet heating" Menu................................................................................................ 15
Figur 11: The "Hotwater" Menu..................................................................................................... 16
Figur 12: The "Air quality" Menu ................................................................................................... 17
Figur 13: The "Air exchange" Menu.............................................................................................. 18
Figur 14: The "Defrost" Menu ....................................................................................................... 19
Figur 15: The "Temp. control" Menu.............................................................................................. 20
Figur 16: The "Inlet control" Menu................................................................................................. 21
Figur 17: The "Room control" Menu.............................................................................................. 22

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Figur 18: The "Restart" Menu ....................................................................................................... 23
Figur 19: The "Preset" Menu......................................................................................................... 24
Figur 20: The "Manual" Menu ....................................................................................................... 25
Figur 21: The "Modbus" Menu ...................................................................................................... 26
Figur 22: The "Datalog" Menu....................................................................................................... 27
Figur 23: Air Filter change............................................................................................................. 29
Figur 24: Safety Switch................................................................................................................. 30
Figur 25: Accessories/spare parts................................................................................................. 32

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Before starting

Please check that the following documents have been supplied with the unit:
- Installation instructions (this manual)
- Operating instructions for CTS 602 controls
- Wiring diagram
Should you have any questions on how to operate the system, contact your nearest Nilan dealer,
who you can find at www.nilan.dk/dealers
Compact S is a heat recovery ventilation system with a capacity of up to 330m3/h at 100Pa exter-
nal counter pressure. The energy of the exhaust air is transferred via a heat pump to a 180litres
hot water tank as first priority and to the inlet air as second priority.
The system can be equipped with G4 duct filter. Other optional extras are also available, including
hygrostat and pollen filter unit.
The system is operated via CTS 602 controls offering a wide range of functions, including menu-
based operation, weekly programming, timed filter alarm, fan speed adjustment, etc. The CTS 602
controls are described in a separate manual supplied together with the system.
For details of spare parts and accessories under Figure 25 “accessories”
Compact S is supplied in a white Aluzink cabinet, fully tested and ready to operate. Installation and
start-up must only be performed by a qualified electrician.
Note: The water tank must be filled with water before the unit start up.

Subject to alterations Page 5 of 33
Electrical connection

All wiring (power supply, safety circuit breaker, etc.) must only be fitted by a qualified
electrician.
The system must be connected in accordance with the accompanying wiring diagram.
The system is supplied with a 1 m test cable for the CTS 602 control panel. The control panel must
be connected to the CTS 602 controls using twisted pair cable type 2x2x0.25mm2(max. length
50m).
The CTS 602 control panel should be installed in a dry, frost-free location. A temperature sensor
built into the control panel prevents further cooling of the building should the primary heating sys-
tem fail by switching the ventilation system off if control panel temperature falls below a preset
level.
Figur 1: CTS 602 Control Panel

Subject to alterations Page 6 of 33
Installing Compact S

When installing the unit, it is important to take future service and maintenance into ac-
count. There should be a minimum clearance of 602
mm in front of the unit, measured
from the Compact S front panel.

When lifting the unit with straps it is important that the straps has an angle of maximum
45°C off perpendicular.
Individual connectors have been marked out at the factory to facilitate installation. Please note the
attached labels. The connectors should be connected to the duct system using flexible adapters
(flex tube, soundproofed flex tube or similar).
The unit must be installed and leveled on a firm, vibration-free surface. There should be at least
10mm clearance to walls or other permanent installations. Although the unit itself is practically
noise and vibration free, care must be taken to prevent any vibration from being propagated to ad-
joining parts of the building.
The rear angular slide bar of the base frame of the Compact S can be removed in order to make it
possible to push the unit towards the wall to hide water connections etc.
It is important that the condensation outlet of the Compact S be connected to a drain. The unit is
supplied complete with water trap. The outlet should be led frost-free with steady decline to the
nearest drain. The safety valve overflow must also be led to a drain.
If Compact S is enclosed by any covering, it must be possible to remove the covering easily.
Figur 2: Duct Connections
1. Ø160
Udeluft
Aussenluft
Fresh air
Air frais
2. Ø160
Tilluft
Zuluft
Inlet air
Air pulsè
3. Ø160
Fraluft
Abluft
Exhaust air
Air repris
4. Ø160
Afkastluft
Fortluft
Discharge air
Air extrait

Subject to alterations Page 7 of 33
Figur 3: Sketch of Compact S
The unit is shipped with all 4 spigots on the top. The metal plan and the spigots can be moved.

Subject to alterations Page 8 of 33
Explanation temperature sensors:
T1:
Fresh air
T4:
In the counter flow heat exchanger
T5:
Condenser
T6:
Evaporator
T7:
Inlet air after the electrical heating
surface. (T2 is change to T7, by
mounting Heating surface)
T10:
Exhaust. The temperature is shown in
the ”Show data” menu”
T11:
Top of the hot water tank
T12:
Bottom of the hot water tank
T15:
CTS602 panel.
E5:
Heating element 1,5kW
Figur 4: Location of temperature sensors

Subject to alterations Page 9 of 33
Condensation drain/water trap
Compact S is supplied with 20mm condensation outlet (PVC, GF fittings). The unit is also equipped
with built-in water trap.

The condensation outlet must be led frost-free with a steady decline of at least 1 cm/m to
the nearest drain. The safety valve overflow must also be led to a drain.

In order to prevent ice formation, it may be necessary to equip the condensation outlet
with a heating cable where frost is possible Protecting the condensation outlet from frost
is the responsibility of the fitter.

Subject to alterations Page 10 of 33
Water connection
The inner tank surface is enamelled and the tank is equipped with a sacrificial anode.
All connectors have 3/4” threads, with the exception of the anode access which is a 5/4” sleeve.
All water pipes are connected to the bottom of the unit.
If required, hot water circulation can be established by fitting a non-return valve to the recirculation
connector of the tank after inserting a 80cm long circulation pipe (optional accessory) into the tank.
See figure 3 below.
If hot water circulation is not required, the connector and fitted blanking plug should be left un-
touched.
Hot water circulation may result in considerable heat loss within the piping system. A large propor-
tion of heat pump output may therefore be lost. To prevent heat loss, circulation and hot water
pipes must be insulated with at least 30mm of mineral wool or other type of pipe insulating materi-
al.
12:
Cold water
13:
Hot water
14:
Return supplementary coil
15:
Inlet supplementary coil
Figur 6: Water connections
Note: The water tank must be filled with water before the unit start up.
Supplementary heating element DHW
The hot water tank has a supplementary heating element of 1,5kW. The heating element can be
activated and de-activated via the CTS 602 control, see the “Hotwater” menu.
The temperature, at which the heating element should be active (T11), can be set in the “Hotwater”
menu, see “Directions for use of the CTS 602 control
Figur 5: Location of sacrificial anode

Subject to alterations Page 11 of 33
Duct connection
Ducting and fittings with rubber seals of tightness class B are recommended. It is also advisable
that all duct connections to Compact S be made with approx. 1m of soundproofed flex tube in order
to dampen sound emission.
Ducting should be cut to length using a hacksaw or angle grinder and laid in accordance with the
design drawing. Ducting is usually either attached to rafter feet using perforated strip or suspended
in fitting strip. Avoid pinching the ducting in any way and any unnecessary bends.
The ducting must be insulated. Sometimes, standard loft insulation can be used for the purpose.
All ducting should be insulated with 100mm mineral wool to prevent heat loss and condensation.
Such insulation requirements also apply to soundproofed flex tubing. It is recommended that two
layers of 50mm insulating material be used. If ducting is installed in an unheated room, it is inad-
visable to switch the system off for prolonged periods as air from heated rooms will rise into the
ducting and condensate, thus possibly causing moisture problems.
Figur 7: Flexible connection Figur 8: Insulation of ducting
The discharge duct leads the exhaust air (from which the system has recovered the energy it con-
tained) to the outside through the roof or outer wall. It is important that the roof stack or wall grille
has at least the same area as the duct immediately ahead of the stack or grille. Any contraction will
cause unnecessary pressure drop, which may reduce ventilation capacity.
Holes for inlet and exhaust valves should be cut to fit the frame of the valve concerned. Secure the
valve frame in position using screws and then attach the valve. Where the valves should be posi-
tioned depends on room design and use. It is, for example, inadvisable to install inlet valves
immediately above where people usually sit as inlet air may sometimes be perceived as a draught.
Loft insulation
material
Duct
Granulate
A flexible, 40
cm connec-
tion is
recommended.

Subject to alterations Page 12 of 33
Electrical heating element
Electrical heating surface should be installed in the ducting (Ø160/Ø200). When retrofitting an elec-
trical heating surface it should be activated in the CTS 602 control panel. (HEATING SURFACT)

Power supply of the Electrical heating element must be installed by an authorized elec-
trician.
Heating surface, electrical (retrofitting)
The heating surface should be installed in the injection duct.
There should be a safety distance of minimum 150mm from the heating surface to any flammable
materials. The heating surface must be insulated with a fire resistant material. However the electri-
cal box may not be insulated. (Important: instructions from the manufacturer of the heating surface
must be followed).
Signal overheating
Supply
L ≥0,5 m
T 7
230 V
Unit
The heating surface has a temperature regulator and a safety thermostat installed. Clamps 3 & 4 in
CN6 should be short-circuited. When installing other types of heating surfaces be aware of securi-
ty. The heating surface must equipped with a temperature regulator and a safety thermostat
The heating surface must be activated in the CTS 602 control panel.
T2 is annulled when the heating surface is activated in the CTS 602 control.
See installation instructions for heating element and temperature control.
HEATING SURFACT must be enabled to work with the unit.
TEMP. CONTROL allows you to choose the controlling temperature sensor for the unit.
After the option of an electrical heating element T7 is the air supply sensor.

Subject to alterations Page 13 of 33
Start-up and configuration of CTS 602 controls
Startup
Once all connections have been checked, check that the tank is full of water. To do so, open the
hot water tap.
Open ceiling valves, ensuring that valve cone is level with front edge.
CTS 602 configuration
This section describes the SERVICE menu of the CTS 602 controls. For instructions on everyday
operation of the CTS 602 controls, please refer to the accompanying CTS 602 operating instruc-
tions.
On the CTS602 control panel, press:
- ESC to return to the previous menu
- p to scroll upwards or downwards through the menus or to
adjust the setting of an activated menu option
- ENTER to activate a menu option
- ENTER to confirm a menu option setting
- OFF switch off the controls
- ON to switch on the controls
Activating the Mainmenu/submenu menu
Press and hold pand simultaneously for 5 seconds. The mainmenu/submenu menu can then
be accessed.

Subject to alterations Page 14 of 33
Activating the SERVICE menu
Press and hold and ENTER simultaneously for 10 seconds. The SERVICE menu can then be
accessed. Press repeatedly until SERVICE appears on the display. Press ENTER to activate
the SERVICE menu. It is then possible to scroll through the SERVICE menu options using the p
buttons. The options available on the SERVICE menu are shown in the figure below.
DEFROST
ENTER
SERVICE
AIR
QUALITY
AIR
EXCHANGE
TEMP.
CONTROL
INLET
CONTROL
ROOM
CONTROL
RESTART
OFF
PRESET
OFF
MANUAL
OFF
INLET
HEATING
HOTWATER
MODBUS
ADR 30
DATALOG
INTV 10
Figur 9: Headlines in the service menu

Subject to alterations Page 15 of 33
Inlet heating
In the ”Inlet heating” menu it is possible to activate and de-activate the heating surface in the inlet
air and to set the regulation time.
On the CTS602 control panel, press:
- ESC to return to the previous menu
- p to scroll upwards or downwards through the menus or to
adjust the setting of an activated menu option
- ENTER to activate a menu option
- ENTER to confirm a menu option setting
- OFF switch off the controls
- ON to switch on the controls
HOTWATER
DEFROST
SELECT
ON ENTERENTER
SELECT
”OFF”
INTEGRAL
TIME 10
AIR
EXCHANGE
INLET
CONTROL
SERVICE ENTER
TEMP.
CONTROL
RESTART
OFF
MANUAL
OFF
PRESET
OFF
ROOM
CONTROL
AIR
QUALITY
INLET
HEATING
Regulation time
in minutes.
SELECT
”ON”
INTEGRAL
TIME ”10"
MODBUS
ADR 30
DATALOG
INTV 10
Figur 10: The "inlet heating" Menu

Subject to alterations Page 16 of 33
Hotwater
The ”Hotwater” menu enables you to activate and de-activate the electrical heating element in the
hot water tank.
When the heating element is set to ON, a ”w” will occur in the main menu, when the heating ele-
ment is in use.
AUTO W
”>2<” 19°C
Options that flash are indicated by ” ”
On the CTS602 control panel, press:
- ESC to return to the previous menu
- p to scroll upwards or downwards through the menus or to
adjust the setting of an activated menu option
- ENTER to activate a menu option
- ENTER to confirm a menu option setting
- OFF switch off the controls
- ON to switch on the controls
HOTWATER ENTER EL SUP
ON EL SUP
”ON”
LEGIONEL
”MON”
ENTER
ENTER
ENTER
ENTER
ENTER
EL SUP
”OFF”
LEGIONEL
OFF
LEGIONEL
”OFF”
A weekday can
be chosen,
where the
hotwater will be
warmed up to
65°C between
01.00 and 06.00
o’clock.
The legionella
fuction is not
active.
SERVICE ENTER
DEFROST
INLET
CONTROL
TEMP.
CONTROL
PRESET
OFF
RESTART
OFF
ROOM
CONTROL
AIR
EXCHANGE
INLET
HEATING
AIR
QUALITY
PRIORITY
”0"°C
Temperature for prioritizing the
hot water. (All energy in the
exhaust air is delievered to the
hot water). The setting is
suptracted to T12(the temperature
in the bottom of the hot water
tank).
MANUAL
OFF
PRIORITY
”0"°C ENTER
MODBUS
ADR 30
DATALOG
INTV 10
Figur 11: The "Hotwater" Menu

Subject to alterations Page 17 of 33
Air quality
In the ”Air quality” menu it is possible to choose between 3 types of regulation: Humidity, Humidity
+ CO2or OFF.
On the CTS602 control panel, press:
- ESC to return to the previous menu
- p to scroll upwards or downwards through the menus or to
adjust the setting of an activated menu option
- ENTER to activate a menu option
- ENTER to confirm a menu option setting
- OFF switch off the controls
- ON to switch on the controls
HOTWATER
DEFROST
FUNCTION
OFF ENTER
ENTER FUNCTION
”OFF”
AIR
EXCHANGE
INLET
CONTROL
SERVICE ENTER
TEMP.
CONTROL
RESTART
OFF
MANUAL
OFF
PRESET
OFF
ROOM
CONTROL
AIR
QUALITY
INLET
HEATING
Can be set to:
OFF, HUMIDITY or
HUM+CO2, when is
mounted.
MODBUS
ADR 30
DATALOG
INTV 10
Figur 12: The "Air quality" Menu

Subject to alterations Page 18 of 33
Air exchange
The AIR EXCHANGE menu allows four ventilation steps (air quantities) to be set. Individual values
for inlet and exhaust can be set for each ventilation step.
A minimum ventilation step for inlet air and minimum and maximum steps for exhaust air can also
be set.
On the CTS602 control panel, press:
-ESC to return to the previous menu
-p to scroll upwards or downwards through the menus or to
adjust the setting of an activated menu option
- ENTER to activate a menu option
- ENTER to confirm a menu option setting
- OFF switch off the controls
-ON to switch on the controls
INLET
HEATING
AIR
EXCHANGE ENTER
SERVICE ENTER
DEFROST
INLET
CONTROL
TEMP.
CONTROL
PRESET
OFF
RESTART
OFF
ROOM
CONTROL
HOTWATER
AIR
QUALITY
The lowest permissible
ventilation step for fresh air/inlet
(0-2)
The lowest permissible
ventilation step for outlet/exhaust
(1-2)
INLET
MIN 0
EXHAUST
MIN 1
EXHAUST
MAX 4
The highest permissible
ventilation step for outlet/exhaust
(3-4)
INLET35%
INLET
>2< 45%
INLET
>3< 70%
EXHAUST
>1< 38%
EXHAUST
>3< 70%
EXHAUST
>4< 100%
INLET
>4< 100%
EXHAUST
>2< 50%
Each ventilation step can be set
as a percentage of maximum fan
speed.
MANUAL
OFF
>1<
.
MODBUS
ADR 30
DATALOG
INTV 10
Figur 13: The "Air exchange" Menu

Subject to alterations Page 19 of 33
Defrost
The DEFROST menu determines the mode of system operation while the evaporator surface and
the counter flow heat exchanger in the exhaust air flow is being defrosted.
Options that flash are indicated by ” ”
On the CTS602 control panel, press:
-ESC to return to the previous menu
- p to scroll upwards or downwards through the menus or to
adjust the setting of an activated menu option
- ENTER to activate a menu option
- ENTER to confirm a menu option setting
- OFF switch off the controls
- ON to switch on the controls
INLET
HEATING
DEFROST
HOTWATER
AIR
EXCHANGE
INLET
CONTROL
SERVICE ENTER
TEMP.
CONTROL
RESTART
OFF
MANUAL
OFF
PRESET
OFF
ROOM
CONTROL
AIR
QUALITY
MODBUS
ADR 30
DATALOG
INTV 10
Lockout between 2
defrost periods. Can
be set from 15 –
720 minuttes.
PERIOD
30 MIN
ENTER
Max. defrosting
time of heat
exchanger.
TERMINAT
T4/6 6°C
COMP MAX
10 MIN
EXCH MAX
25 MIN
Max. defrosting
time of
compressor.
Adjustable temperature to
stop defrost on exchanger/
evaporator T4/6
START
T6 -3 °C
Adjustable temperature to
start evaporator defrost on
T6 [-10…0]
Figur 14: The "Defrost" Menu

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Temp. control
The temperature sensor to be used to control the system is selected in the TEMP. CONTROL
menu. It is also possible to stipulate a minimum temperature at which the system is to be stopped
to prevent further cooling of the building if the primary heating system has cut out for some reason.
Options that flash are indicated by ” ”
On the CTS602 control panel, press:
-ESC to return to the previous menu
- p to scroll upwards or downwards through the menus or to
adjust the setting of an activated menu option
- ENTER to activate a menu option
- ENTER to confirm a menu option setting
- OFF switch off the controls
- ON to switch on the controls
INLET
HEATING
TEMP.
CONTROL ENTER
HOTWATER
AIR
EXCHANGE
DEFROST
INLET
CONTROL
SERVICE ENTER
RESTART
OFF
MANUAL
OFF
PRESET
OFF
ROOM
CONTROL
EXTERNAL
-1°C
AIR
QUALITY
Option for an extra heating
element via relay output,
R8. R8 is an accessory and
the option is only possible
via accessory pcb.
The temperature is added
or subtracted to/from the
set point shown in the main
menu.
Determines the sensor to be
used for control purposes:
PANEL: T15 (in control panel)
EXTERNAL: T10 (Duct sensor)
If T15 is chosen as the
controlling sensor the sensor
follows ROOM LOW this
temperature.
SENSOR
PANEL SENSOR
”PANEL”
PRIORITY
”HP”
PRIOR.
”OFF”
ENTER
ENTER
ROOM
LOW 10°C
PRIORITY
HP
Stops the system at this
room temperature (20-
1°C, -- indicates that the
function is inactive). The
”--” setting should be
used if the control panel
is installed in a cold
location.
OFF:
ventilation
without heat
pump.
VP:
ventilation
with only
heat pump
active.
MODBUS
ADR 30
DATALOG
INTV 10
Figur 15: The "Temp. control" Menu