CTC Union 380 S 18 Technical specifications

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Installation- and maintenance instruction
CTC 380 S
Model 18 / 22/ 27/ 33 / 40 / 50 / 63
161 505 41-4 2015-11-19
IMPORTANT
READ CAREFULLY BEFORE USE
KEEP FOR FUTURE REFERENCE

Installation- and maintenance instruction
CTC 380 S
Model 18 / 22 / 27 / 33 / 40 / 63
For your own reference
Fill in the information below. It may be useful if anything should happen
Product Manufacturing No.
With reservation for typing errors. Subject to alterations in design.
Plumber Name
Date Telephone No.
Electrician Name
Date Telephone No.
Chimney sweep Name
Date Telephone No.
161 505 41-2 2013-01-14

4CTC 380 S
General information
Table of contents
GENERAL INFORMATION 4
Welcome _______________________________________________________________________ 5
Important to remember! ______________________________________________ 6
Safety Instructions _______________________________________________________ 6
General installation conditions ___________________________________ 6
1. Technical information ___________________________________________ 7
1.1 Technical data____________________________________________________7
1.2 Measurements___________________________________________________8
1.3 Description________________________________________________________9
2. Installation____________________________________________________________ 10
2.1 General information __________________________________________ 10
2.2 Boiler room______________________________________________________10
2.3 Transport ________________________________________________________ 10
2.4 Unpacking_______________________________________________________ 11
2.5 Boiler stand ____________________________________________________11
2.6 Connection to chimney_____________________________________ 12
2.7 Flue gas temperatures _____________________________________12
2.8 Hudraulic connection boiler ______________________________13
2.9 Safety valve boiler ____________________________________________13
2.10 Heating circuit pump _______________________________________14
2.11 Heating circuit mixing valve ______________________________ 14
2.12 Connection domestic hot water (DHW) and secon-
dary heating circuit __________________________________________14
2.13 DHW charging pump________________________________________14
2.14 System diagrams _____________________________________________ 15
2.15 Drainage/Drain valve_________________________________________ 15
2.16 Filling ______________________________________________________________15
2.17 Siphon ____________________________________________________________15
2.18 Neutralisation box ____________________________________________ 15
2.19 Chimney solutions____________________________________________ 16
3. Electrical installation boiler________________________________ 18
3.1 General information. _________________________________________ 18
3.2 Power supply __________________________________________________ 18
3.3 Main switch _____________________________________________________ 18
3.4 Heating circuit pump ________________________________________ 18
3.5 Heating circuit mixing valve _______________________________18
3.6 DHW charging pump________________________________________18
3.7 Safety limit thermostat (STB) _____________________________18
3.8 Electrical diagram 582451/1______________________________ 19
4. First start - Commissioning________________________________ 20
4.1 Before first start _______________________________________________20
4.2 First start_________________________________________________________20
4.3 After first start __________________________________________________ 20
5. Operation _____________________________________________________________ 21
5.1 General information __________________________________________ 21
5.2 Regular inspection ___________________________________________ 21
5.3 Standstill _________________________________________________________21
5.4 Frost risk_________________________________________________________ 21
5.5 Boiler cleaning _________________________________________________ 22
5.6 Spiro-Condens system cleaning ________________________ 23
5.7 Drainage _________________________________________________________25
5.8 Oil operation____________________________________________________ 25
5.9 Operations disturbance ____________________________________ 26
6. Comfort control ___________________________________________________ 27

5CTC 380 S
General information
Welcome
Congratulations! You have just bought a CTC 380 S
a 3-stroke oil heating boiler for progressive heating,
which really corresponds to the present market
demands of low energy consumption, comfort and low
environmental influence.
We hope you will be very pleased with your CTC 380 S
and you can read about how to operate your boiler in
the following pages.
The CTC 380 S is designed to last for many years,
and it is here you will find the information you need to
operate and maintain the boiler unit correctly and ensure
its longevity.
• The CTC 380 S is designed for firing with a
minimum of ecologically harmful emissions and
energy losses.
• The CTC 380 S is available in seven sizes from
18-63 kW.
• The CTC 380 S supplies the total requirement of
heating and DHW of the house.
• The CTC 380 S has in order to simplify the
installation, water- and flue gas connections on
the top as well as the rear side of the boiler.
• The CTC 380 S is equipped with an adapted,
extensional weather-compensated Comfort-
control which totally fulfils the requirements of a
comfortable and energy-saving operation.
• The CTC 380 S is thanks to the space-generous
burner door and easily accessible combustion
surfaces very maintenance-friendly.
• The type indication of the boiler is found on the
product label on top of the boiler.

6CTC 380 S
General information
!Regulations: The
installation of the
boiler and the heating
system must be car-
ried out by authorized
personnel according
to existing engineering
standards and building
regulations.
Important to remember!
Especially check the following points at delivery and
installation:
• The installation must be carried out by authorized
personnel according to existing engineering
standards and building regulations.
• A correct function of the CTC 380 S, as well
as the manufacturer warranty to be valid
is only guaranteed when the installation,
handling and maintenance are made as by the
recommendations in this technical manual.
• Operation disturbances and defects which are
caused by a not workmanlike handling as well as
direct violent handling of the product, liberates the
manufacturer from its warranty commitments.
• Remove the packaging. Before installation, check
that the product has not been damaged during
transport. Notify the forwarding agent of any
transport damage.
• Check that a safety valve drain pipe to the floor
drain is being fitted at the installation.
• Check the condition of the chimney and secure its
durability against condensate.
• Please read the chapter about cleaning and
maintenance in the end of this manual.
• Check the pressure in the expansion vessel
annually.
• Please, hand over this technical manual to the
customer after the installation!
Safety Instructions
The following safety instructions should be followed
when handling, installing and using the CTC 380 S:
• Ensure that the boiler is currentless before any
interventions.
• Do not flush the boiler or any of its control
equipment with water.
• The flue gas channel and the ventilation duct of the
boiler room for air supply must not be blocked.
• Check that the burner and its oil tubes are tight.
• The operating switch of the boiler must be off if the
oil burner is opened and in maintenance position,
for example during cleaning or service.
• This appliance is not intended for use by persons (
including children) with reduced physical, sensory
or mental capabilities, or lack of experience
and knowledge, unless they have been given
supervision or instruction concerning use of the
appliance by a person responsible for their safety.
• Children should be supervised to ensure that they
do not play with the appliance.
General installation conditions
A correct function of the CTC 380 S, as well as the
manufacturer warranty to be valid is only guaranteed
when the installation, handling and maintenance are
made as by the recommendations in this technical
manual.
Operation disturbances and defects which are caused
by a not workmanlike handling as well as direct violent
handling of the product, liberates the manufacturer
from its warranty commitments.Please, hand over this
technical manual to the customer after the installation!

7CTC 380 S
General information
3-stroke oil-heating boiler CTC 380 S
Model 18 22 27 33
Rated output kW 18,3 22 27,3 33,9
Rated input kW 19,6 23,7 29,2 36,1
Oil supply kg/h 1,65 2,0 2,46 3,05
Flue gas mass ow g/s 8,2 9,9 12,2 14,7
Boiler resistance mbar 0,07 0,10 0,14 0,21
Boiler water resistance ( ∆ 20K) mbar 2,0 2,0 3,0 3,0
Flue gas losses * % 5,49 5,19 5,61 5,7
Radiation losses * % / W 1,11 / 216 1,11 / 216 0,79 / 215 0,6 / 215
Boiler efciency % 93,4 93,7 93,6 93,7
Flue gas temperature * °C 138 136 146 160
Boiler efciency at 70 °C % 93,8 94 94 94,1
Flue gas temperature 70 °C °C 130 128 138 152
Max. Operation pressure boiler (PS) Bar 3 3 3 3
Max. Operation temperature boiler °C 110 110 110 110
Water content l 98,5 98,5 92 92
Weight kg 197 197 200,5 210
Number of turbulators Pcs. 6 6 9 9
Turbulator model 21/45 27/45 27/45 21/45
Electrical data 230V 1N~ 230V 1N~ 230V 1N~ 230V 1N~
1. Technical information
1.1 Technical data
3-stroke oil-heating boiler CTC 380 S
Model 40 50 63
Rated output kW 39,7 51,2 61,6
Rated input kW 42,7 55,1 66,9
Oil supply kg/h 3,6 4,65 5,65
Flue gas mass ow g/s 17,1 23,7 29,7
Boiler resistance mbar 0,4 0,29 0,5
Boiler water resistance ( ∆ 20K) mbar 5,0 8,0 9,0
Flue gas losses % 5,7 6,75 7,61
Radiation losses % / W 0,6 / 215 0,45 / 249
Boiler efciency % 1,11 / 216
Flue gas temperature * °C
Boiler efciency at 70 °C %
Flue gas temperature 70 °C °C
Max. Operation pressure boiler (PS) Bar
Max. Operation temperature boiler °C
Water content l
Weight kg
Number of turbulators Pcs.
Turbulator model
Electrical data 230V 1N~
* According to
EN 303-3

8CTC 380 S
General information
1.2 Measurements
Legend
• 1a. Primary flow top R 1”, (18-33)*
• 1b. Primary flow top R 1 ¼”, (40-63)*
• 2a. Return flow top R 1”, (18-33)*
• 2b. Return flow top R 1 ¼”, (40-63)*
• 3a. Primary flow rear R 1”, (18-33)*
• 3b. Primary flow rear R 1 ¼”, (40-63)*
• 4a. Return flow rear R 1”, (18-33)*
• 4b. Return flow rear R 1 ¼”, (40-63)*
• 5. Expansion connection R 1”
• 6. Drainage R 1”
• 7a. Flue gas outlet top ” 130 mm, (18-33)*
• 7b. Flue gas outlet top ” 150 mm, (40-63)*
• 8. Basic unit Siemens RVS13.143
• 9a. Operator unit Siemens AVS37.294
• 9b. Power pack Siemens AVS16.290
• 10. Adjustable feet M10
• 11. Flue gas outlet rear
*) Output-sizes in kW

9CTC 380 S
General information
1.3 Description
The principle parts of the design consist of measure made steel/stainless
steel plates. The boiler has been pressure- and tightness tested and is
provided with skin-tight heat insulation as well as powder coated covers
plates.
Flue gas outlet
Connections on the top and rear side.
Burner hood
The burner hood is an
integrated and sophisticated
component part of the boiler.
Hinged arm
The cleaning door is equipped with hinges
which serves as a hinged arm. In that
way is it easier to swing out the
burner in connection to inspections and
maintenance.
Operator unit
The operator unit of the Comfort-control –
Siemens AVS37.294. For more information,
see the part Electrical installation –
Comfort-control.
Power pack
The power pack of the control panel –
Siemens AVS16.290. For more information,
see the part Electrical installation –
Comfort-control.
Turbulators
The function of the turbulators is to
create turbulence of the flue gases, in
order to improve the amount of thermal
energy which is transmitted to the
boiler water. All sizes are from factory,
equipped with for each size adapted
standard turbulators. The turbulators
are reached behind the cleaning door
in the front of the boiler.
Adjustable feet
The boiler is equipped with four
adjustable feet.
Basic unit
The basic unit of the Comfort-control
– Siemens RVS43.143. For more
information, see the part Electrical
installation – Comfort-control.
Heat insulation
In order to minimize the heat losses the
boiler is provided with solid, skin-tight
heat insulation.
Ripples
The boiler-sizes 33, 40 and 63 kW
are equipped with ripples. The ripples
enlarge the the surfaces in which the
interchange of heat of the second flue
gas stroke takes place. This results in
an optimized heat transfer of the flue
gases to the boiler water.
Combustion chamber
The generous sized combustion
chamber offers the adjusted Low NOx oil
burner optimal performance.
DUO-Temperature System
The combustion chamber is surrounded
by two mantles, which allows low-
temperature operation protected from
dew-point corrosion resulting in a long-
life operation.
Cleaning door
Thanks to the large cleaning door are the
turbulators within easy reach as well as it
facilitates the simultaneously cleaning and
maintenance of the heating surfaces of the
boiler.

10 CTC 380 S
General information
!Check the pressure in
the expansion vessel
annually.
2. Installation
2.1 General information
The installation must be carried out by authorized personnel according to
existing engineering standards and building regulations.
The boiler must be connected to an expansion vessel in an open (the
expansion vessel of high placement together with safety- and return pipe)
or a closed system. At an open system the distance between the expansion
vessel and the highest placed radiator must not be less than 2,5 m to avoid
oxygen-enrichment of the system.
2.2 Boiler room
The boiler room must correspond to existing building regulations and
particularly then the firing regulations of the present country.
The boiler room must be equipped with a venthole for air supply. The cross
section area of the venthole must be at least 6,5 cm2pro 1 kW boiler output.
2.3 Transport
To avoid transport damage, do not unpack the boiler until it has been
transported to its site in the boiler room. The boiler can be handled and lifted
in the following way:
• Forklift
• Lift band round the pallet. Note! Only with the packing on.
• Sack barrow
• By putting carrier pipes in the water connections on the rear side,
respectively the build-in 1” carrier sockets on the front side of the boiler

11CTC 380 S
General information
!Continue the heating boiler installation with the hydralic-, chimney- and electrical work.
The boiler stand may be assembled according
to following items:
1. Screw the long- and short sides together by using M6-Screws (8x).
2. Fasten the adjustable feet on the underside of the boiler stand.
3. Fasten M6-Screws (4x) from below on the upper side of the boiler
stand.
4. Place the boiler on the boiler stand by using the M6-Screws in item 3.
as guide pins. Do not fasten!
2.4 Unpacking
To avoid damage in the handling, do not unpack the boiler until it has
reached its site in the boiler room. After the unpacking check, that the boiler
has not been damaged during transport. Report eventual transport damages
to the transporter.
Standard delivery:
• Oil-condensing boiler CTC 950 IC Condens
• Safety valve
• Siphon
• Primary flow sensor
• Outdoor sensorDHW storage tank sensor
2.5 Boiler stand (Accessory kit)
The boiler stand is delivered as accessory kit. The boiler stand
contain following parts:
1. Long sides (2x)
2. Short sides (2x)
3. Adjustable feet (4x) (Not in the accessory kit.
Use the adjustable feet of the boiler!)
4. M6-Screws (12x) In order to decrease the lift weight of the boiler,
remove the burner and cleaning door during the wall mounting.

12 CTC 380 S
General information
2.6 Connection to chimney
Existing regulations for the design of the chimney must be taken into
consideration. An optimal utilization of the flue gases and with that an
energy-saving operation, requires hereby a mostly optimized adaption
between boiler and burner.
The most important conditions are the following:
• Good thermal insulation in order to as much as possible avoid
temperature losses from the connection between the boiler and
chimney.
• Accurate sealing of the flue gas connections
• Smooth surfaces of the combustion chamber to avoid turbulence.
• Heat-shock resistance as well as water- and steamtight.
According to regulations:
• The boiler must be connected to the chimney with the shortest feasible
flue duct at an angle of 30-45°.
• The flue duct must not be fully inserted through the chimney wall.
• If flue ducts with a cross-sectional dimension which deviate from the
dimension of the flue gas outlet would be used, the connection must
be cone-shaped. Cone angle of maximum 7,5°.
• By the construction of the flue duct between boiler and chimney must
feasible actions be taken to secure that no condensate can flow back
to the boiler (condensate trap).
2.7 Flue gas temperatures
When a new boiler is being connected to an old chimney, the chimney is
often not dimensioned to the new high efficiency of the boiler, which may
easily result in condensation in the chimney depending on lower flue gas
temperatures. In order to ventilate the chimney with warmer boiler room air, a
draught interrupter can be mounted.
All boiler-sizes of the CTC 380 Ecoswiss serie has for the current output-size
design related operational flue gas temperatures. For flue gas temperature
data, see Technical information.
2.8 Hydraulic connection boiler
The dimensioning and plumbing of the system shall be accomplished
according to the measurements in the part Technical information.
2.9 Safety valve boiler
In a closed system, an approved safety valve according to existing
regulations must be mounted.
The max. Operation pressure of the boiler is 3 bars. The connection
pipebetween boiler and safety valve must be constructed in such way
that no pressure increase is possible. The safety valve drain pipe must be
uncovered and visible. Possible exhausting high-temperature hot water must
without danger be removed (Caution! Risk of scalding)

13CTC 380 S
General information
!If the size of the system exceeds the limits according to the diagram, the vo-
lume of the expansion vessel must increase.
2.10 Heating circuit pump
A heating circuit pump must be mounted on the primary flow of the boiler.
The pump is being supplied with electric current from the boiler. For more
information concerning system principles and connections, see ElectricalL
Installation – Comfort-Control.
2.11 Heating circuit mixing valve
A heating circuit mixing valve must be mounted on the primary flow of the
boiler. The heating circuit mixing valve is being supplied with electric current
from the boiler. For more information concerning system principles and
connections, see Electrical installation – Comfort-Control.
2.12 Connection domestic hot water
(DHW) Secondary heating circuit
The connections located on the rear side of the boiler makes it possible to
connect the boiler to a secondary heating circuit. These connections offer
also the possibility to connect the boiler to a water heater system. The
temperature of the return flow to the boiler must not be lower than 45°C.
2.13 Drainage/Drain valve
Shall be mounted on the drainage connection on the rear side of the boiler.
2.14 Connection water heater
If the CTC 380 S will be combined together with a water heater, is it of
high importance that it’s size and power capacity corresponds to the
installed boiler output. The installation must correspond to existing building
regulations. Recommended to connect on the rear primary- and return flow
of the boiler.
For more information concerning system principles and connections,
see Electrical installation – Comfort-Control.

14 CTC 380 S
General information
3. Electrical installation boiler
Reset button STB
3.1 General information.
The installation and wiring of the boiler must be carried out by an authorized
electrician and in accordance with valid regulations. The internal boiler wiring
is from factory prepared for the installation.
3.2 Power supply
The boiler should be connected to 230V 1N~ and protective earth.
3.3 Main switch
A main switch should be installed.
3.4 Heating circuit pump
The heating circuit pump for the heating system is being connected to the
connection terminal on the basic unit. The switch for the pump is placed on
the comfort-control of the boiler.
3.5 Heating circuit mixing valve
The heating circuit mixing valve for the heating system is being connected to
the connection terminal on the basic unit.
3.6 Safety limit thermostat (STB)
If the boiler has been stored extremely cold the safety limit thermostat may
have released.
Reset by pressing the button on the power section.

15CTC 380 S
General information
3.7 Electrical diagram E-582450
Si Fuse 6,3AT
S1 Mains switch with green glow lamp
STB Safety limit thermostat (STB) 110°C
H1 Signal lamp (SLT tripped)

16 CTC 380 S
General information
4. First start - Commissioning
4.1 Before first start
Check that:
• The boiler and heating system are filled with water.
• All connections are tight and that the chimney connection is made in
an correct way.
• The oil tank is inspected according to existing regulations.
• An oil filter (type Tigerloop) is fitted to the burner.
• The electrical connections are made in an correct way.
• All sensors, burner, mixing valve and pumps are connected to the
power supply.
4.2 First start
• Switch on the current with the mains switch.
• By commissioning applies the Comfort-control the factory pre-set
standard values for set points, time program and operating modes.
Though is it prerequisite to make settings of the time of the day and
date. Further adjustments for personal requirements are performed
according to the technical manual of the Comfort-control.
(See also the part Electrical installation – Comfort-control.)
• Check that the oil burner starts.
• When the boiler has reached its operating temperature, check and
adjust the oil burner in accordance with its technical manual.
(See also the part Oil burner.)
4.3 After first start
Check that:
• All pipe connections are tight, tighten if necessary.
• The flue duct is tight and well insulated.
• The boiler temperature rises upon first start.
• Heat goes out to the heating system
• The heating circuit pump is running and can be controlled from the
Comfort-control of the boiler.
• The tapping points of the house are provided with hot water as the
boiler has turned warm.
• The function of the safety valve is faultless.
• The boiler and the heating system are well vented. Re-check after a
few days.

17CTC 380 S
General information
5. Operation
5.1 General information
After the installation check together with the installer that the installation is
fully ready for operation. Let the installer show you all important regulation
devices, etc. so that you are well aware of how the boiler installation
functions and should be maintained. Vent the radiators after app. 3 days of
operation and fill up with more water if necessary.
5.2 Regular inspection
The regular inspection should include following items:
• Check control of the pressure gauge (manometer). By too low
pressure, fill-up water in the heating system by means of charging- and
drainage device.
• Check control of the heating oil level in the tank.
• Check control of the settings of the Comfort-control.
• Check control of the temperature of the heating boiler, primary flow
and flue gas.
• Check control of the burner according to the instructions manual for
the burner
• In a closed system, check control of the safety valve by means of
turning the regulation device of the valve. Check if water run out from
the safety valve drain pipe.
• Neutralisationbox: Check its function and pH-value according to its
manual and existing regulations.
5.3 Standstill
If the installation should be put out of operation, use the mains switch.
(See the part Electrical installation – Comfort-control.)
5.4 Frost risk
Never put the boiler in operation if its pose a risk that the boiler or parts of
the heating system is frozen. This leads to damages on the boiler and piping
in the house. Consult your heating technician for advice.
Concerning protection mode.
(See the part Electrical installation – Comfort-control.)

18 CTC 380 S
General information
6. Comfort control
U T S R Q P NL
QX1
N Y2 N Y1 Q2 N Q3 N SK2 SK1 4 S3 T2 T1 N L1 S3 L1 N
L
2354Z08
050110A
000020RVS43.143/109
1PRVS13.143/109
S050110000020
M BX2 M BX1 M B1 M H1 M B9 M B3 - - M B2 - G+ CL- CL+ CL- CL+
MB DB X50 X60 X30 BSB
n n p n k h f b b a
6. Comfort-control
Terminal markings
General information
The boiler is factory equipped with the Comfort-control Siemens Albatros2.
The Comfort-control consists of a basic unit, power pack and operator unit.
The power pack and operator unit creates together the control panel of the
boiler. Part 6. describes the principal information concerning the Comfort-
control. Fore more information concerning functions, programming, system
principles etc., please see the Albatros2 Boiler Controller User Manual.
Basic unit RVS43.143
161 505 95

19CTC 380 S
General information
Mains voltage
Use Termininal Type of
connector
L
N
L1
S3
Phase AC 230 V basic unit
Protective earth
Neutral conductor
Phase AC 230 V burner
Output burner fault
N L AGP4S.05A/109
L1
N
T1
T2
S3
4
Phase burner
Protective earth
Neutral conductor
Phase 1 st burner stage
1 st burner stage on
Input burner fault
Input burner stage 1 hours run
P AGP8S.07A/109
SK1
SK2
Safety loop
Safety loop
Q AGP8S.02E/109
N
Q3
Neutral conductor
Protective earth
DHW charging pump / diverting valve
R AGP8S.03A/109
N
Q2
Neutral conductor
Protective earth
1st heating circuit pump
S AGP8S.03B/109
Y1
N
Y2
1st heating circuit mixing valve opening
Neutral conductor
Protective earth
1st heating circuit mixing valve closing
T AGP8S.04B/109
N
QX1
Neutral conductor
Protective earth
1st multifunctional output
U AGP8S.03C/109

20 CTC 380 S
General information
LED
2358Z33
LPB
Checking the LED
LED off: No power supply
LED on: Ready to operate
LED flashes: Local faults
Low voltage
Use Steckplatz Type of connector
BSB
LPB
X60
X50
X30
Service tool OCI700
Local process bus
Radio module AVS71.390
Extension module AVS75.390
Operator unit / boiler control
-
-
-
-
-
-
-
-
AVS82.490/109
AVS82.491/109
DB
MB
LPB data
LPB ground
a AGP4S.02H/109
CL+
CL-
Room unit 2 data
Room unit 2 ground
b AGP4S.02A/109
CL+
CL-
Room unit 1 data
Room unit 1 ground
b AGP4S.02A/109
AGP4S.03D/109
G+ Room unit power supply 12V
B2
M
Boiler sensor
Ground
f AGP4S.02B/109
B3
M
DHW sensor top
Ground
h AGP4S.02C/109
B9
M
Outdoor sensor
Ground
k AGP4S.02D/109
H1
M
Digital-/0..10V input
Ground
n AGP4S.02F/109
B1
M
Flow sensor
Ground
p AGP4S.02G/109
BX1
M
Multifunctional sensor input 1
Ground
n AGP4S.02F/109
BX2
M
Multifunctional sensor input 2
Ground
n AGP4S.02F/109