Operation and Maintenance Instructions
Table Of Contents
- 1 Overview
 - 2 Warnings
 - 3 Warnings signs on product
 - 4 Product description
 - 5 Start up
 - 6 Operation
 - 7 Maintenance
- 7.1 Maintenance intervals
 - 7.2 How to replace supply/extract air filter
 - 7.3 How to clean NaviPad
 - 7.4 How to clean the heat exchanger
 - 7.5 How to clean the fans
 - 7.6 How to clean hot water heating coil
 - 7.7 How to clean the electric heating coil
 - 7.8 How to clean the extract air louvres and inlet diffusers
 - 7.9 Clean the outdoor air intake
 - 7.10 How to clean the duct system
 - 7.11 Where to reset tripped fuses
 - 7.12 How to reset the manual overheat protection (EL units)
 - 7.13 How to replace the fan module
 - 7.14 How to replace the heat exchanger
 - 7.15 Change the internal battery in control unit CU27–C
 
 - 8 Troubleshooting
 - 9 Alarms
 - 10 Service
 - 11 General conditions
 - 12 Spare parts
 










