Mini Bus Climate System

The Climate System
The requirements in this mini bus conversion was to extend the vehicle air conditioning to have a secondary evaporator and blower unit ducted into the rear for passengers. Also fitted was a Webasto  4 kw air heater. Using a digital climate controller, the operator could just set temp and leave it to automatically switch between a/c and heat mode.

Webasto Air Top Evo 40 4.0kW Air Heater Diesel 12V Universal Vehicle Kit for Climate System

A new generation in air heating technology!

This model, together with its larger cousin, the Air Top Evo 55, represent the very latest in design and are the product of several years of research and improvements on the Air Top Evo 3900/5500; the model it is replacing.

Although the unit looks the same as the previous model, there are many new features incorporated under the covers, together with re-programming of the ECU that mark a great leap forward in air heating.

some of the features include:

  • Increase in the heater output from a lowered fan RPM – Lower power comsumption from the batteries and lower noise levels.
  • New ECU featuring innovative control logic – as a matter of fact this will better your fuel efficiency and flame detection.
  • A new fuel dosing pump featuring Intelligent drive – as a result, up to 12dB reduction in noise output.
  • Also a new exhaust gas temperature sensor – closer monitoring of the burning process.
  • Automatic boost – an automatically step up to 100% output when it is needed on the heater. Also it will reduce when required temperature is reached. The Evo 40 will run at 100% for a maximum of 6 hours, if required to do so, whereas the model it replaces used to boost, if selected, for 40 minutes.
  • New lower voltage thresholds on start-up – less problems with older, worn batteries.
  • In-built altitude sensor – combustion air fan rpm is increased at higher altitudes to ensure optimum combustion of gases in thinner air.
  • New air temperature sensor – sleek and modern design

The kit comes complete with:

  • Air Top Evo 40 12V Diesel heater
  • Rotary rheostat control with fault flash indicator
  • DP42 Fuel pump
  • Wiring harness
  • Exhaust
  • Fuel line and ‘T’ piece connector