Webasto Air Top 2000 ST B User manual

Boat Air Heaters Installation Instructions
Air Top 2000 ST
Air Top Evo 40
Air Top Evo 55
Trade names :
Air Top 2000 ST D (Diesel/PME)
Air Top Evo 40 D (Diesel/PME)
Air Top Evo 55 D (Diesel/PME)

Improper installation or repair of Webasto heating and cooling systems can cause fire or the leakage of deadly carbon
monoxide leading to serious injury or death.
To install and repair Webasto heating and cooling systems you need to have completed a Webasto training course and
have the appropriate technical documentation, special tools and special equipment.
Only genuine Webasto parts may be used. See also Webasto air and water heaters accessories catalogue.
NEVER try to install or repair Webasto heating or cooling systems if you have not completed a Webasto training course,
you do not have the necessary technical skills and you do not have the technical documentation, tools and equipment
available to ensure that you can complete the installation and repair work properly.
ALWAYS carefully follow Webasto installation and repair instructions and heed all WARNINGS.
Webasto rejects any liability for problems and damage caused by the system being installed by untrained personnel.

I
Table of Contents
1 About This Document . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
2 Regulations governing installation . . . . . . . . . . . . . . . . . . .50
3 Use / variants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
4 Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
5 Cold and hot air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
6 Fuel supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
7 Combustion air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
8 Exhaust system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
9 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
10 Wiring diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
11 Initial operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
12 Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
13 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

49
Boat Air Heaters
Air Top 2000 ST / Evo 40 / Evo 55
Note
Mechanical system
Electrical system
Heated air
Fuel
Exhaust
Combustion air
Attention
Technical Information
Excerpt from directive
1AboutThisDocument
To enable quick reference to the individual procedures you will find a descriptive symbol on the top outer edge of each page.

Technical Information Boat Air Heaters
Air Top 2000 ST / Evo 40 / Evo 55
50
2 Regulations governing installation
2.1. Statutory regulations governing installation
Permit numbers see Chapter 13, "Technical data".
2.2. Application of combustion heaters on boats
Observe regional authority regulations! Establish which regulations
apply in the area where the boat is to be used. Comply with the
stipulated requirements!
Obtain official approval if necessary!
The cables must be installed and firmly secured such that the wirings
are adequately protected against mechanical and thermal stress.
Requirements relating to the basic unit:
When switched off, it is permissible for combustion heaters to continue
running for max. 40 seconds. Only combustion heaters are to be used
with heat exchangers that are not damaged during their standard
operating period by the reduced afterrunning time of 40 seconds.
2.3. Additional documentation to be used
These installation instructions contain all the information
and instructions necessary to install Air Top 2000 ST / Evo
40 / Evo 55 heaters.
The operating instructions must also be observed.