nilan Compact S CTS 602 User manual

Version: 10.00, 13-04-2015
Software-version: 2.30
Installation instruction
CTS 602 by Nilan
Comfort 300

Table of contents
Table of contents ............................................................................................................................ 2
Figure table .................................................................................................................................... 2
Introduction..................................................................................................................................... 3
Power supply.................................................................................................................................. 4
Assembly of Comfort ...................................................................................................................... 5
Condensation drain / water seal ..................................................................................................... 6
Ducting ........................................................................................................................................... 7
Starting and set up of the CTS 602 control ..................................................................................... 8
Activating the service menu ........................................................................................................ 9
Heating surface......................................................................................................................... 10
Air quality.................................................................................................................................. 11
Air exchange............................................................................................................................. 12
Defrost...................................................................................................................................... 13
Temp. control............................................................................................................................ 14
Inlet control............................................................................................................................... 15
Room control ............................................................................................................................ 17
Preset....................................................................................................................................... 20
Manual...................................................................................................................................... 21
PWR save................................................................................................................................. 22
Modbus..................................................................................................................................... 23
Datalog ..................................................................................................................................... 24
System dimensions ...................................................................................................................... 25
Accessories/spare parts ............................................................................................................... 26
Figure table
Figure 1: CTS 602 control............................................................................................................... 4
Figure 2: Mounting the Comfort unit................................................................................................ 5
Figure 3: Condensation drain / water seal....................................................................................... 6
Figure 4: Insulation of ducting......................................................................................................... 7
Figure 5: CTS 602 control............................................................................................................... 8
Figure 6: Headlines in the service menu......................................................................................... 9
Figure 7: The “Central heating” menu ........................................................................................... 10
Figure 8: The “Air quality” menu ....................................................................................................11
Figure 9: The "Air exchange" menu .............................................................................................. 12
Figure 10: The "Defrost" menu ..................................................................................................... 13
Figure 11: The "Temp. control" menu............................................................................................ 14
Figure 12: The "Inlet control" menu............................................................................................... 16
Figure 13: The "Room control" menu............................................................................................ 17
Figure 14: The "Restart" menu ..................................................................................................... 19
Figure 15: The "Preset" menu....................................................................................................... 20
Figure 16: The "Manual" menu ..................................................................................................... 21
Figure 17: The "PWR save" menu ................................................................................................ 22
Figure 18: The "Modbus" menu .................................................................................................... 23
Figure 19: The "Datalog" menu..................................................................................................... 24
Figure 20: System dimensions for Comfort 300 ............................................................................ 25

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Introduction

Please control that the following documents have been delivered together with the unit:
- Directions for assembly & use (this document)
- CTS 602 directions
- Electrical chart
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
The purpose of this instruction manual is to offer the installation contractor and the user instruc-
tions on correct installation and maintenance of the Comfort system.
Comfort is a ventilation unit with heat recovery. The unit can yield up to 325 m3/h at 100 Pa exter-
nal back pressures. The energy in the exhaust air is being transferred to the inlet air.
The system is prepared for retrofitting of a post-heating element (electricity or water) for supply
heating of the inlet air. The post-heating element is controlled via CTS 602.
The unit is delivered with a G4 filter.
Operating the unit is done with the CTS 602 control. The control has many functions such as menu
based attendance, week programme, time controlled filter guard and adjustment of the velocity of
the ventilator. (Directions for the CTS 602 control is described in another document delivered with
the unit.)
See section on accessories and spare parts.
Comfort is delivered tested and ready for use. Installation and start-up must be carried out by an
authorized electrician.

We recommend that the system as well as the installation itself are adjusted/looked
through in order to ensure optimal operation

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Power supply

Power supply including safety switch must be installed by an authorized electrician.
The Comfort-unit must be connected according to the attached electrical chart.
The unit is delivered with 1m test cable for the CTS 602 panel. The panel should be connected to
the CTS 602 control in the unit with cable type 2x2x0.25mm2twisted in pairs. (Max length 50 m).
The CTS 602 panel must be placed dry and frost-proof. The panels’ integrated feeler prevents fur-
ther cooling of the building if the primary heat-supply stops by stopping the ventilation if the panel
feeler gets below a specific value. (Factory setting is 10°C; the value can be set from 1-20°C.)
Figure 1: CTS 602 control

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Assembly of Comfort

When mounting the Comfort-unit future service and maintenance should be considered.
There is required a minimum of open space in front and behind of the unit of 60cm.
In order to ease the mounting each of the connection pieces is labeled. Please notice the labels.
The connection between the unit and the ducting should be a flexible transition.
The system must be level because of the condense outlet. The condense outlet requires a mini-
mum clearance height of 125mm beneath the outlet connection.
The exchanger is low-noise and low-vibration. However, potential vibrations spreading from the
system to the individual building parts must be taken into account. To detach the system from the
floor, we recommend that the system is placed on vibration absorbers. The vibration absorbers
must be placed diagonally on each corner to ensure that the system does not “fall down” from
them. If a water heating element is installed in Comfort 300/450/600, a clearance distance of 60 cm
is required behind the system.
It is not necessary to re-insulate the system as it is delivered with a 20 mm standard insulation.
Comfort
300
Inlet
(Primærside)
Inlet
Comfort
300
Vibration absorbers
(Sekundærside)
Vibration absorbers
Figure 2: Mounting the Comfort unit

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Condensation drain / water seal
The Comfort unit is delivered with a 20mm condensation drain. (PVC, GF-fittings). The drain is
placed under the discharge.

The condensation drain should be carried with an even inclination of at least 1cm per
metre, frost-proof to the nearest outlet. The overflow from the safety valve should also be
carried to the nearest outlet.

To avoid frost problems it can be necessary to supply the condensation drain with a
heating cable. It is the plumbers’ responsibility to secure the drain. (See Accessories)
When the system is running, there can be a vacuum of up to 500Pa (corresponding to 50mm water
column) in the outlet. For this reason, the difference in height in the water seal must be minimum
50mm. This means that the first bend of the water seal must be at least twice as long in order for
the system to be able to dispose of the condense water (see figure 3).
The water seal can dry out and avoid the water from running out of the unit. Therefore the water
seal should be tested regularly and refilled with water if necessary. An elevated height of the water
seal will reduce the need for refilling with water.
min. 112,5mm
min. 50mm.
min. 50mm.
Ø20mm drain
Comfort
Figure 3: Condensation drain / water seal

The water seal should be tested as described below. (the unit must be connected to the
ducting and the front door should be closed):
The condensation tray is filled with water and the unit is started at the highest ventilation
step. The unit should run for a couple of minutes. Check that the condensation tray is
empty when the test is finished.

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Ducting
We recommend that there are used ducts and fittings with rubber packing that meet sealing class
B and that the connections between the unit and the ducting are made with 1 meter sound absorb-
ing flexible transitions as regards sound reduction.
The ducts should be shortened with a hacksaw or an angle grinder and laid out according to the
working drawing. The ducts are typically laid out on the main beam of the truss frame and are se-
cured with hole belts or they are being hanged in assembly belts. Please avoid any unnecessary
area reductions and breaks of the ducting.
The ducts should be insulated –in some cases with the ordinary attic-insulation. All ducts should
be insulated with 100 mm mineral wool to avoid heat loss and condensation. This also applies for
flexible transitions. It is recommended that the insulation is carried out with 2 layers of 50 mm. If
the ducts are laid out in an unheated room it will cause condensation problems if the unit are
turned off for a longer period of time as the hot air from the heated room will rise to the ducts and
cause condensation which can cause damp problems.
Figure 4: 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.
The holes for the inlet- and exhaust valves should be cut according to the mounting-frame for the
prescribed valve. The frame for the valve must be secured with screws before placing the valve in
the frame. The valves are placed in accordance with the size, construction and use of the room. As
an example we would not recommend placing an inlet valve just above people with sedentary work
because the inlet air in some cases would be experienced as a draught.
Loft insulation
material
Duct
Granulate

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Starting and set up of the CTS 602 control
Before starting the Comfort please check all functions as by-pass/cooling, heating and heating sur-
face if installed.
In this passage we will go through the service menu of the CTS 602 control. For daily use of the
CTS 602 control please see the CTS 602 directions. (delivered together with the Comfort).
Use of the CTS600 panel:
- press ESC to go one step back in the menu
- press qpto move up or down in a menu or to adjust an
activated menu
- press ENTER to activate a menu
- press ENTER to confirm a menu
- press OFF to turn off the unit
- press ON to turn the unit on
Figure 5: CTS 602 control

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Activating the service menu
Press qand ENTER at the same time for 10 seconds. The service menu is now available. Press
qmultiple times until the panel shows SERVICE. Press ENTER to enter the service menu. It is
now possible to move around in the menu by using pq. The headlines of the service menu are
shown below:
TEMP.
CONTROL
ENTER
SERVICE
AIR
EXCHANGE
DEFROST
HEATING
SURFACE
INLET
CONTROL
ROOM
CONTROL
RESET
OFF
MANUAL
OFF
AIR
QUALITY
PWR SAVE
MODBUS
ADR 30
OFF
DATALOG
INTV 10
RESTART
OFF
Figure 6: Headlines in the service menu

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Heating surface
The unit can be equipped with a heating surface.
It is possible to retrofit a heating surface. The surface must be activated in the CTS 602 control in
order to function together with the unit and for the frost-protection to be active.
When installing a heating surface T7 is the temperature sensor in the inlet.
Use of the CTS600 panel:
- press ESC to go one step back in the menu
- press qpto move up or down in a menu or to adjust an
activated menu
- press ENTER to activate a menu
- press ENTER to confirm a menu
- press OFF to turn off the unit
- press ON to turn the unit on
HEATING
SURFACE
SERVICE ENTERENTER
AIR
EXCHANGE
DEFROST
INLET
CONTROL
TEMP.
CONTROL
MANUEL
OFF
RESET
OFF
ROOM
KONTROL
AIR
QUALITY
Should be chosen
when installing a
heating surface for
water.
Controlled via 0 -10
V signal
Should be chosen
when installing an
electrical heating
surface, controlled
via 0-10 V signal
Delay between
start of ventilators
and heating
surface (0 –60
minutes)
”OFF”
DELAY2 MIN
ENTER
SELECT
WATERSUP
SELECT
0–10 V
VALG
SELECT
”PERIOD”
”0–10 V”
VALG
”0/5/10 V”
SELECT
”WATERSUP”
SELECT
SELECT
”EL SUP”
The setting ”OFF”
is chosen for
systems without
heating element
PWR SAVE
MODBUS
ADR 30
OFF
DATALOG
INTV 10
RESTART
OFF
Figure 7: The “Central heating” menu

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Air quality
In the ”Air quality” menu it is possible to choose between 3 types of regulation: Humidity, Humidity
+ CO2or OFF.
FUNCTION
”OFF”
ENTER
FUNCTION
”HUM +CO ”
2
ENTER
FUNCTION
OFF
FUNCTION
”HUMIDITY”
HEATING
SURFACE
SERVICE ENTER
AIR
EXCHANGE
DEFROST
INLET
CONTROL
TEMP.
CONTROL
MANUEL
OFF
RESET
OFF
ROOM
KONTROL
AIR
QUALITY
PWR SAVE
MODBUS
ADR 30
DATALOG
INTV 10
RESTART
OFF
Figure 8: The “Air quality” menu

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Air exchange
In the ”Air exchange” menu it is possible to adjust 4 steps of ventilation speed (air volume). Inlet
and exhaust is to be adjusted individually at each level.
The inlet speed can be adjusted to a minimum and the exhaust can be adjusted to both a maxi-
mum and a minimum.
Use of the CTS600 panel:
- press ESC to go one step back in the menu
- press qpto move up or down in a menu or to adjust an
activated menu
- press ENTER to activate a menu
- press ENTER to confirm a menu
- press OFF to turn off the unit
- press ON to turn the unit on
The value indicates the lowest
permissible ventilation step of the
inlet ventilator
(0 –2)
The value indicates the lowest
permissible ventilation step of the
exhaust ventilator
(1 –2)
INLET
MIN 0
EXHAUST
MIN 1
EXHAUST
MAX 4
ENTER
SERVICE ENTER
TEMP.
CONTROL
DEFROST
PRESET
OFF
ROOM
CONTROL
INLET
CONTROL
HEATING
SURFACE
The value indicates the highest
permissible ventilation step of the
exhaust ventilation
(3 –4)
INLET
>1< 23%
INLET
>2< 40%
INLET
>3< 65%
EXHAUST
>1< 25%
EXHAUST
>3< 70%
EXHAUST
>4< 100%
INLET
>4< 100%
EXHAUST
>2< 45%
Here it is possible to adjust each
ventilation step in % of maximum
ventilator output.
MANUAL
OFF
AIR
EXCHANGE
.
AIR
QUALITY
DELAY
0 MIN
PWR SAVE
MODBUS
ADR 30
OFF
DATALOG
INTV 10
RESTART
OFF
Figure 9: The "Air exchange" menu

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Defrost
In the ”Defrost” menu it is possible to chose how the unit should perform during defrosting of the
evaporator in the exhaust.
” ” indicates that the menu point flashes and can be set to another value
Use of the CTS600 panel:
- press ESC to go one step back in the menu
- press qpto move up or down in a menu or to adjust an
activated menu
- press ENTER to activate a menu
- press ENTER to confirm a menu
- press OFF to turn off the unit
- press ON to turn the unit on
HEATING
SURFACE
DEFROST ENTER
AIR
EXHANGE
INLET
CONTROL
SERVICE ENTER
TEMP.
CONTROL
PRESET
OFF
MANUAL
OFF
ROOM
CONTROL
.
AIR
USER
ENTER BYPASS
”OPEN”
ENTER
BYPASS
”CLOSE”
BYPASS
OPEN
EXCH.
PERIODE
30 MIN
TERMINAT
T4/6 °C7
AIR
”USER”
EXCH.
”OFF”
AIR
EXHANGE
AIR
”LOW”EXCH.
AIR EXCH.
Fixed off-period in
minutes between two
defrost modes. Can
be set to anything
from 15 to 720
minutes.
Adjustable temperature
for discontinuing
defrosting measured on
T4, discharge censor
Low-level
injection during
defrosting
Custom injection
during defrosting.
Discontinued
injection during
defrosting
PWR SAVE
MODBUS
ADR 30
OFF
DATALOG
INTV 10
RESTART
OFF
Figure 10: The "Defrost" menu

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Temp. control
In the ”Temp. control” menu it is possible to chose a room temperature where the unit stops in or-
der to avoid further cooling of the building if the primary heating shuts down.
” ” indicates that the menu point flashes and can be set to another value
Use of the CTS600 panel:
- press ESC to go one step back in the menu
- press qpto move up or down in a menu or to adjust an
activated menu
- press ENTER to activate a menu
- press ENTER to confirm a menu
- press OFF to turn off the unit
- press ON to turn the unit on
without heating surface
ventilation with
heatpump and heating
HEATING
SURFACE
TEMP.
CONTROL
AIR
EXCHANGE
DEFROST
INLET
CONTROL
SERVICE ENTER
PRESET
OFF
MANUAL
OFF
ROOM
CONTROL
The unit stops at this
room temperature (1-
20°C) - - means that the
function is unactive.
- - should be chosen if
the panel is placed in a
cold environment.
SENSOR
”EXTERNAL”
SENSOR
PANEL SENSOR ”PANEL”
PRIORITY
”HP + EXT”
PRIORITY
”HF”
ENTER ENTER
ENTER
SENSOR
”EXHAUST”
ROOM
LOW 10°C
PRIORITY
HP + EXT
EXTERNAL
-1 °C PRIORITY
”OFF”
Indicates which sensor
that needs to be the
controlling one.
15 (Panel
sensor).
ROOM EXT: T10 (to be
installed in representative
extraction fitting).
EXHAUST: T3 (Exhaust)
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.
OFF: ventilation
HP:ventilation only
with heatrecovery
HP+EXT:
surface activ
PWR SAVE
MODBUS
ADR 30
OFF
DATALOG
INTV 10
RESTART
OFF
PANEL T
Figure 11: The "Temp. control" menu

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Inlet control
In the ”Inlet control” menu it is possible to adjust the regulation of the inlet. The menu is only ac-
cessible when the unit has a heating surface installed.

The ”Inlet control” menu should only be adjusted by persons with knowledge of control
engineering.
” ” indicates that the menu point flashes and can be set to another value.

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Use of the CTS600 panel:
- press ESC to go one step back in the menu
- press qpto move up or down in a menu or to adjust an
activated menu
- press ENTER to activate a menu
- press ENTER to confirm a menu
- press OFF to turn off the unit
- press ON to turn the unit on
HEATING
SURFACE
TEMP.
CONTROL
AIR
EXCHANGE
DEFROST
SERVICE ENTER
PRESET
OFF
MANUAL
OFF
ROOM
CONTROL
INLET
CONTROL ENTER GAIN 7.0%/°
INTEGRAL
120 s
N-ZONE
0.5°C
TMP-RAMP
0.10°/s
CAP-RAMP
0.5%/s
AIR
QUALITY
PWR SAVE
MODBUS
ADR 30
OFF
DATALOG
INTV 10
RESTART
OFF
Figure 12: The "Inlet control" menu

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Room control
In the ”Room control” menu it is possible to adjust the regulator for controlling the room tempera-
ture.

The ”Room control” menu should only be adjusted by persons with knowledge of control
engineering.
” ” indicates that the menu point flashes and can be set to another value.
Use of the CTS600 panel:
- press ESC to go one step back in the menu
- press qpto move up or down in a menu or to adjust an
activated menu
- press ENTER to activate a menu
- press ENTER to confirm a menu
- press OFF to turn off the unit
- press ON to turn the unit on
HEATING
SURFACE
ROOM
CONTROL
TEMP.
CONTROL
AIR
EXCHANGE
DEFROST
INLET
CONTROL
SERVICE ENTER
PRESET
OFF
MANUAL
OFF
ENTER RESPONSE
NORMAL
RESPONSE
”USER”
RESPONSE
”FAST”
RESPONSE
”NORMAL”
GAIN 6.0°/°
INTERGRAL
6m
RESPONSE
”SLOW”
ENTER
N-ZONE
2.0°C
ENTER RESPONSE
USER
N-ZONE
2.0°C
The RESPONSE
menu is only
accessible when the
CTS 600 control is
set up to heating
surface
Rum control parametres:
Response Gain Integral
Slow 4.0 12
Normal 6.0 6
Fast 8.0 4
User 6.0 6
AIR
QUALITY
MODBUS
ADR 30
PWR SAVE
OFF
DATALOG
INTV 10
RESTART
OFF
Figure 13: The "Room control" menu

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Restart
Acknowledge of FIRE alarm.
Fire alarm (code 3) it can be acknowledged automatically by elections in SERVICE-RESTART
menu:
[OFF, FIRE]
Fire alarms can be acknowledged automatically during fire drills / testings. It is a precondition of
the acknowledgement, that the fire thermostat entry has returned to the normal condition (closed
switch).
HEATING
SURFACE
AIR
EXCHANGE
DEFROST
INLET
CONTROL
SERVICE ENTER
TEMP.
CONTROL
MANUAL
OFF
ROOM
CONTROL
AIR
EXCHANGE
PWR SAVE
MODBUS
ADR 30
OFF
DATALOG
INTV 10
PRESET
OFF
RESTART
OFF ENTER RESTART ”OFF” Indicates that the system
will not be restarted
automatically in
connection with high or
low pressure alarms.
RESTART
”FIRE”
FIRE:Even Receipt
when fire input is back
to normal
Figure 14: The "Restart" menu

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Preset
” ” indicates that the menu point flashes and can be set to another value.
RESTORE menu allows you to reload a copy of the installation setup.
By keeping the ESC + key pressed for 5 seconds a new menu item RESTORE appear, this is
then acceptable / activated by pressing the ENTER
Use of the CTS600 panel:
- press ESC to go one step back in the menu
- press qpto move up or down in a menu or to adjust an
activated menu
- press ENTER to activate a menu
- press ENTER to confirm a menu
- press OFF to turn off the unit
- press ON to turn the unit on
HEATING
SURFACE
AIR
EXCHANGE
DEFROST
INLET
CONTROL
SERVICE ENTER
TEMP.
CONTROL
MANUAL
OFF
ROOM
CONTROL
PRESET
OFF ENTER PRESET ”OFF”
PRESET
”STANDARD” Factory settings are
chosen when pressing
ENTER at
”STANDARD”. If a
heating element is
installed, it must be
activated in the service
menu again.
AIR
EXCHANGE
”BACKUP”
”RESTORE”
PRESET
PRESET The backup will be
saved.
The backup is restored.
Subsequently, the
system must be
restarted.
PWR SAVE
MODBUS
ADR 30
OFF
DATALOG
INTV 10
RESTART
OFF
Figure 15: The "Preset" menu