Webasto Ti22 ProX User manual

Operating Instructions
Chilled Water Marine Air-Conditioning Systems
Ti22 ProX
English

Table of Contents
2 2112899A OI Ti22 ProX
Table of Contents
1 About this document .......................... 3
1.1 Purpose of this document.......................................... 3
1.2 Using this document..................................................3
1.3 Use of symbols and highlighting ................................ 3
1.4 Warranty and liability................................................. 3
1.5 Measurements........................................................... 3
2 Safety ................................................. 3
2.1 Intended use ............................................................. 3
3 General ............................................... 3
4 Home screen and icons ....................... 3
5 Standby .............................................. 4
6 ON/OFF ............................................... 4
7 Operation ........................................... 4
7.1 Selecting the setpoint temperature ............................ 4
7.2 Setting the fan speed................................................. 5
7.3 Chiller unit Home screen without cabin control.......... 5
8 System settings................................... 5
8.1 Setting level 1............................................................5
9 Maintenance....................................... 5
10 Status / Error message table ............... 7

About this document | 1
2112899A OI Ti22 ProX 3 / 10
1 About this document
1.1 Purpose of this document
This document is an integral part of the product and contains
the information required to ensure correct and safe installation
and operation.
1.2 Using this document
lRead these Operating Instructions (OI) carefully before op-
erating the unit.
lPlease pass this document on to the next owner or user of
the unit.
1.3 Use of symbols and highlighting
This document uses warning labels and colors for hazard classi-
fication in accordance with ISO 3864:
See also https://www.iso.org/standard/55814.html.
DANGER
This signal word denotes a hazard with a high degree
of risk which, if not avoided, will lead to death or seri-
ous injury.
WARNING
This signal word denotes a hazard with a moderate de-
gree of risk which, if not avoided, may lead to minor or
moderate injury.
CAUTION
This signal word denotes a hazard with a low degree of
risk which, if not avoided, will lead to minor or moder-
ate injury.
NOTE
This signal word denotes a Special Technical Feature or
(if not observed) potential damage to the product.
Refers to separate documents which are enclosed or
can be requested from Webasto.
Requirements for the following necessary action
1.4 Warranty and liability
Webasto shall not assume liability for defects or damage that
are the result of the Installation Instructions / Operating Instruc-
tions and the instructions contained therein being disregarded.
This liability exclusion particularly applies to:
lInstallation by untrained personnel.
lImproper use.
lRepairs not carried out by a Webasto service workshop.
lUse of non-genuine parts.
lConversion of the unit without permission from Webasto.
1.5 Measurements
NOTE
All measurements are in mm, unless stated otherwise.
2 Safety
2.1 Intended use
The purpose of Ti22 ProX is to provide heating and cooling on
ships.
The Ti22 ProX meets the current state of technology and recog-
nized safety rules.
WARNING
Improper or inappropriate use may result in
danger to life and limb of the user and others, as
well as impairment of the unit and other property.
Any other use of this product is not permissible.
Any other use of or changes to the product, including
as part of assembly and installation, will result in any
and all warranty claims being voided.
WARNING
Moving parts
Risk of injury, damage to air handlers.
You must only operate the Ti22 ProX and its connected
air handlers in their final installed position.
WARNING
Ignition of surrounding gases or highly flammable
liquids by sparking of the Ti22 ProX.
You must always switch off the air conditioning system
when refueling, or while in a petrol station area.
3 General
The BlueCool MyTouch is the standard control element for the
Ti22 ProX and enables easy operation and setting of the con-
nected system. The screen is a touch screen. System operation is
described below.
ATTENTION
Damage to BlueCool MyTouch
The display must not come in contact with any other
electrical devices. The electrostatic discharge could
cause malfunctions.
Do not use pointed or sharp objects to operate the
screen. Do not exert excessive pressure.
NOTE
Webasto recommends operating the screen using your
fingers only. The touch sensitivity of the screen is op-
timized to fingertip contact. The screen may not re-
spond if gloves are worn.
Tapping at the very edge of the screen may not be re-
cognized.
4 Home screen and icons
There is a choice of 3 different designs of the Home screen with
temperature and fan setting. The functions are the same.
To change the design (in Passenger menu) see chapter8.1, "Set-
ting level 1" on page 5.
Example: Air handlers are connected to the chiller unit.
If air handlers are connected to the chiller unit, you must select
“Chiller unit with cabin control - Yes”.
In such cases, using the MyTouch control element, the chiller
unit and the temperature in the cabin can be controlled.
Fig.1 Design 1

5 | Standby
4 / 10 2112899A OI Ti22 ProX
Fig.2 Design 2
Fig.3 Design 3
Illustration Fig. 1, Fig. 2 and Fig. 3 show examples of design 1
to 3.
Nr Description
1 Home screen
(Tap Webasto select crew / parameter menu)
2 Temperature setting
3 ON / OFF
4 Fan display
5 Automatic air handler control display
6 Settings (passenger menu)
The icons on the Home screen provide information about the
system status.
Icon Function
On / Off
Temperature
Fan
Settings
Crew menu
Notification
Increase values
Decrease values
Automatic fan control
Previous
22 Set-point temperature
Previous
Next
Parameter value
Select
Home screen
Scroll up
Icon Function
Scroll down
Keypad
Display selection
5 Standby
The screen will go to Standby mode after 5 minutes if the
screen remains untouched. Tap anywhere on the screen to
bring up the Home screen.
6 ON/OFF
When the screen is off:
lTap the screen
– The screen switches on.
When the screen is on:
lTap the green / grey field
– The color of the ON/OFF symbol indicates the operating
status of the BlueCool (green=switchedon).
7 Operation
After switching on, the control system starts up the chiller unit
and the connected air handler in steps and then assumes nor-
mal operation. The control element now shows the current tem-
perature where the temperature sensor of the chiller unit is in-
stalled.
Depending on the installation location, this may also be the
temperature of another cabin.
After approx. 20 seconds, the base colour of the control ele-
ment changes to indicate the operating mode (cooling or heat-
ing) in which the chiller unit was started. Blue indicates cooling
mode, red indicates heating mode. The selection depends on:
lthe selected setpoint temperature and
lthe room temperature, which is measured by the cabin
temperature sensor.
The system will go into standby mode when the cabin temper-
ature and the setpoint temperature are the same.
NOTE
The system only cools under the following conditions:
cabin temperature > 15 °C.
Setpoint temperature < cabin temperature.
The system only heats under the following conditions:
cabin temperature < 29 °C.
Setpoint temperature > cabin temperature.
In automatic mode the fan remains set to speed 1 until the cold
water temperature is lower (cooling) or higher (heating) than
the cabin temperature.
In cooling mode, the cold water temperature is significantly be-
low 15 °C and above 40 °C in heating mode. The current cold
water temperature at the outlet of the Ti22 ProX can be reques-
ted in setting level 2 (crew menu).
See Setting level 2.
7.1 Selecting the setpoint temperature
To set the required cabin temperature:
1. Tap the temperature or the icon on the home screen. The
setpoint temperature appears to the right.
2. Tap the Plus icon or Minus icon to increase or de-
crease the setpoint temperature. The Settings menu closes
automatically after 30 seconds.

System settings | 8
2112899A OI Ti22 ProX 5 / 10
3. Or tap previous to safe and exit menu immediately.
7.2 Setting the fan speed
To set the required fan speed:
lTap on the home screen.
With automatic fan control mode selected, the A appears on
the home screen. The control system of the fan automatically
adapts the fan speed.
To adapt the fan speed manually:
1. Tap the fan icon .
2. Tap the Plus icon or the Minus icon to change the fan
speed, or tap to return to automatic fan mode. After
30 seconds the Settings menu automatically saves the last
value and closes.
3. Tap previous to save and exit the menu immediately.
7.3 Chiller unit Home screen without
cabin control
Fig.4
If you operate the Ti22 ProX chiller unit without any connected
air handlers, then you can select an alternative Home screen,
which displays the current operating values for the chiller unit.
lSet level 2 (crew menu) to select “Chiller unit with cabin
control (No)”.
NOTE
The following actions are not possible with My-
Touch on chiller units without cabin control:
uSetting the fan speed.
uSetting the setpoint temperature.
uOperating modes with automatic changeover
between cooling and heating.
NOTE
If no air handlers are connected to the chiller unit, there
is no need to connect a cabin temperature sensor.
8 System settings
The explanation of the Timer function is an example for the op-
erating logic. The explanation also applies to other setting levels
or functions.
Fig.5
To adjust the timer settings:
1. Tap the Settings icon . Setting level 1 (Passenger menu) is
displayed.
2. Tap or to scroll between the various pages.
Fig.6
3. Tap Timer. The setting window for this function opens up.
Fig.7
4. Tap or to reduce or increase the time interval. The
icon marks the current selection.
5. Tap the required time to set the time interval.
6. Tap the Previous icon to return to the previous level. The
system adopts the selected settings.
7. Or tap the Home screen icon to return to the Home
screen. The system adopts the selected settings.
8.1 Setting level 1
To select setting level 1 from the Home menu:
lTap the Settings icon .
This displays setting level 1 with the following functions de-
scribed below:
9 Maintenance
Check daily:
lCheck and clean the sea water strainer. Remove debris.
lCheck the sea water flow rate at the sea water exit. If there
is no flow, turn the chiller of immediately and check if the
valve is closed. If this does not solve the problem, please
contact your authorised Webasto Marine dealer or service
partner.
Check monthly:
lCheck the position of the cooling water temperature
sensor.
lCheck the cooling water level or static pressure in the ex-
pansion tank. Correct if necessary.

9 | Maintenance
6 / 10 2112899A OI Ti22 ProX
lAdd a sufficient amount of glycol to get a water/glycol mix
ratio of 25 % to 40 % glycol.
lCheck the sea water and chilled water circuit for leaks in
the entire system and from the sea-cock to the sea water
outlet.
lCheck the condensate outflow from the condensed-water
tray and the condensed-water drain line for free passage
and leaks.
lCheck the functioning of the system. Run the Ti22 ProX in
cooling and heating mode for at least 10 minutes. Let the
compressor start 3 to 4 times in each mode.
Check yearly:
lCheck the entire sea water circuit, including the condenser.
The time interval may need to be increased, depending on
the degree of biological fouling (by shellfish etc.). Soiling of
the sea water circuit reduces the sea water flow rate, which
decreases the heat dissipation and may result in high-pres-
sure switch-offs. If the condenser is soiled, the cooling or
heating capacity of the system decreases. An expert must
clean the sea water circuit (such as the installer or your
Webasto Service Centre).
lCheck the electrical connections for corrosion of the con-
tacts and for firm seating.
lCheck the heater exhaust system for corrosion and leaks, if
a fuel operated heater is installed.
lCheck the fuel line for leaks. Clean or replace the fuel filter,
if a fuel operated heater is installed.
Winter storage:
lMake sure the cooling water circuit contains at least 25 %
to 40 % glycol to prevent accidental freezing of the system
during winter. For sufficient protection, let the glycol per-
centage depend on the local temperature.
lEmpty the entire sea water circuit and close the sea water
valve.
General Recommendation:
lWhen leaving the boat unattended for a longer period
close all sea-water valves.

Status / Error message table | 10
2112899A OI Ti22 ProX 7 / 10
10 Status / Error message table
Screen LED “Alive” Possible cause Correction
AAA - Undervoltage 1x flashing,
pause...
Switch-off in case of undervoltage.
Power supply below the set undervoltage
value for longer than 5 seconds.
The cause is probably an excessively long
power cable for the on-shore connection,
small cable cross sections, overloading or
low power generator output.
Check setting (default setting: 195 V).
Do not set below 195 V to prevent
damage to the compressor and sub-
sequently voiding of the warranty.
If this does not solve the problem,
please contact your authorised
Webasto Marine dealer or service
partner.
A01 - Low pressure
compressor 1
2x flashing,
pause...
Pressure switch defective or power circuit in-
terruption / short circuit.
Check if the pressure switch wires are
cut. Please contact your authorised
Webasto Marine dealer or service
partner.
COOLING MODE: Cold water flow rate too
low.
Check cold water flow rate and if ne-
cessary, increase by changing system
layout.
The difference between evaporator in-
let and
outlet temperature must be approxim-
ately 5 K.
HEATING MODE:
- Seawater flow rate insufficient or seawater
too cold (temperature below 6 °C).
- Seawater strainer blocked or no intake.
Check the flow rate of the seawater
circuit at the seawater outlet.
The difference between evaporator in-
let and
outlet temperature must be approxim-
ately 5 K.
At se water temperature < 6 °C: no
heating is possible in reverse heating
operation.
Clean the seawater strainer and bleed
the seawater circuit.
Refrigerant shortage. Please contact your authorised
Webasto Marine dealer or service
partner.
A02 - High pressure
compressor 1
3x flashing,
pause...
Pressure switch defective or power circuit in-
terruption / short circuit.
Check if the pressure switch wires are
cut. Please contact your authorised
Webasto Marine dealer or service
partner.
COOLING MODE:
- Seawater cooling insufficient.
- Seawater strainer soiled or no intake.
Check the flow rate of the seawater
circuit at the seawater outlet.
The minimum flow rates must be
complied with.
Clean the seawater strainer and bleed
the seawater circuit.
HEATING MODE:
Cold water flow rate too low.
Check the cold water flow rate and if
necessary, increase this by changing
thesystem layout.
Difference between the evaporator in-
let and outlet temperature must be
approximately 5 K.
A03 - Low pressure
compressor 2
4x flashing,
pause...
See A01 See A01
A04 - High pressure
compressor 2
5x flashing,
pause...
See A02 See A02
A05 - Low pressure
compressor 3
6x flashing,
pause...
See A01 See A01
A06 - High pressure
compressor 3
7x flashing,
pause...
See A02 See A02
A07 - Low pressure
compressor 4
8x flashing,
pause...
See A02 See A02

10 | Status / Error message table
8 / 10 2112899A OI Ti22 ProX
Screen LED “Alive” Possible cause Correction
A08 - High pressure
compressor 4
9x flashing,
pause...
See A02 See A02
A09 - Cabin temperat-
ure sensor
10x flashing,
pause...
Cabin temperature sensor defective, break /
short-circuit in electrical circuit, cabin tem-
perature sensor not connected.
Connect or replace the cabin temper-
ature sensor.
A10 - Cold water tem-
perature sensor
11x flashing,
pause...
Cold water temperature sensor defective or
break / short-circuit in electrical circuit.
Replace the sensor. If this does not
solve the problem, please contact
your authorised Webasto Marine
dealer or service partner.
A11 - Low pressure
compressor 5
12x flashing,
pause...
See A01 See A01
A12 - High pressure
compressor 5
13x flashing,
pause...
See A02 See A02
A13 - Low pressure
compressor 6
14x flashing,
pause...
See A01 See A01
A14 - High pressure
compressor 6
15x flashing,
pause...
See A02 See A02
A15 - Cold water flow 16x flashing,
pause...
The flow monitor identifies insufficient cold
water flow 5 seconds after the cold water
pump is switched on. Cold water circuit is
blocked or wire break at flow monitor if the
parameter "flow monitor" in the Deactiva-
tion menu is set to Normally open (NO).
Check cold water circuit. If a flow
monitor is not installed, you must de-
activate the flow monitor parameter
using the control element.
Refer to Setting level 3 (parameter
menu).
CA11 - compressors de-
activated
n.a. Set compressor(s) in the control setting are
not active.
Check settings on the control ele-
ment. At least one compressor must
be set as active. See Setting level 3
(parameter menu)
Init - data communica-
tion
17x flashing,
pause...
Data communication: Electrical wiring de-
fective. Power circuit interruption/short cir-
cuit.
Check cables and connections of pc-
board and of control element.
Replace defective connection cable,
control element or pc-board.
No display on screen;
compressor and sea wa-
ter pump not running.
n.a. Fuse faulty or break / short-circuit in this
electrical circuit.
Please contact your authorised
Webasto Marine dealer or service
partner.
Pc-board damaged by high voltage. Please contact your authorised
Webasto Marine dealer or service
partner.
Electronic relay (TRIAC) defective. Please contact your authorised
Webasto Marine dealer or service
partner.
Compressor not run-
ning.
n.a. Compressor defective or break / short-circuit
in compressor wiring.
Please contact your authorised
Webasto Marine dealer or service
partner.
Compressor overload or overload protection
element on top of compressor defective.
Please contact your authorised
Webasto Marine dealer or service
partner.
Incorrect compressor settings. Check settings. At least one com-
pressor must be set as active.
Seawater pump(s) start
up directly after the
control is switched on.
n.a. Wiring of seawater pump and cold water
pump interchanged.
Check electrical wiring.
Compressor keeps cut-
ting in and out.
n.a. Too little cold water. Check cold water system for leaks.
No or insufficient cool-
ing or heating capacity.
n.a. Poor air or water flow, soiled or circulation
blocked.
Secure adequate air or water flow.
Refrigerant shortage. Please contact your authorised
Webasto Marine dealer or a refriger-
ant specialist.

Status / Error message table | 10
2112899A OI Ti22 ProX 9 / 10
Screen LED “Alive” Possible cause Correction
Oil block. Leave air-conditioning system running
in heating mode.
Call out a refrigerant specialist if ne-
cessary.
Technical datasheet available.
Refrigerant circuit blocked (drier, capillary
lines or expansion valve).
Have checked by refrigerant specialist.
Technical datasheet available.
Compressor fault. Have checked by refrigerant specialist.
Incorrect cabin/ambient
temperature or water
temperature displayed.
n.a. Temperature sensor positioned incorrectly,
subject to interference or display values falsi-
fied.
Check whether the temperature
sensor is subject to direct fault sources
such as direct sunlight or devices radi-
ating heat. Replace defective sensor.
The automatic operat-
ing modes cannot be
selected.
n.a. Screen settings are not selected correctly. Select the setting “Chiller unit with
cabin control (Yes)” in setting menu 2,
screen settings; see Screen settings
(level 2)
Chiller unit in cooling
mode (or
heating mode) required
despite
cabin temperatures
needing heating
mode (or cooling
mode).
n.a. Wrong position selected for the cabin tem-
perature sensor.
Check position of cabin temperature
sensor.
Select screen settings “Chiller unit
with cabin control (Yes)”.
Now select automatic mode (F3/F4,
see Screen settings (level 2))

Ident No. 2112899A • 08/2021 • Errors and omissions excepted • © Webasto Thermo & Comfort SE
These are the original instructions. The English language is binding.
You can request your language if it is missing. The telephone number of each country can be found in the Webasto ser-
vice centre leaflet or the website of the respective Webasto representative of your country.
www.webasto.com
2112899A
Europe, Asia Pacific
Webasto Thermo & Comfort SE
Postfach 1410
82199 Gilching
Germany
Company address:
Friedrichshafener Str. 9
82205 Gilching
Germany
UK only
Webasto Thermo & Comfort UK
Ltd
Webasto House
White Rose Way
Doncaster Carr
South Yorkshire
DN4 5JH
United Kingdom