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
Maintenance
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7.7 How to clean the electric heating coil
Clean the heating rods with compressed air, vacuum or a brush. Remove the fan for access, see chapter 7.5.
7.8 How to clean the extract air louvres and inlet diffusers
Remove diffusers and louvres and wash in hot soapy water when necessary. Remount them with their original settings
and positions in order not to unbalance the system.
7.9 Clean the outdoor air intake
Clean the air intake grille once a year.
7.10 How to clean the duct system
Clean steel ducts by pulling a brush through the duct via diffuser, louvre openings or special inspection hatches in the
duct system (if fitted). Use hot soapy water.
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