Maintenance By The Installer; Inspecting And Cleaning The Heat Exchanger - Zehnder ComfoAir Standard 300 Installationsanleitung

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2.9 Maintenance by the installer

The following maintenance must be carry out by the
installer:
■ Inspecting and (if necessary) cleaning the heat
exchanger;
■ Inspecting and (if necessary) cleaning the fans;
■ Inspecting and (if necessary) cleaning the
preheater element filter (If a preheater element is
fitted).
A concise explanation of these maintenance
activities is given in the paragraphs below.
Unplug the unit from the wall outlet
to disconnect it from the power
supply. If the unit does not have a
plug, use a switch according to EN
60335-1 (with switch-off of all poles
and 3 mm overvoltage category III).
Check the condensation drain once every 2
years.
Failure to carry out (periodic) maintenance on
the ComfoAir Standard ultimately compromises
the performance of the ventilation system.
2.9.1 Inspecting and cleaning the heat
exchanger
Check the heat exchanger once every 2 years.
1. Disconnect the power (A) from the ComfoAir
Standard.
2. Remove the handles (B) from the ComfoAir
Standard.
3. Remove the filters from the ComfoAir Standard.
4. Release the front panel by unscrewing the screws
(C).
5. Slide the front panel upwards and remove the
front panel from the ComfoAir Standard.
B
C
6. Release the cover panel by unscrewing the screws
A
(D).
7. Remove the cover panel.
When reassembling the front cover, the lower
section must first be inserted behind the raised
edge to ensure a good seal.
D
ComfoAir Standard – Left-hand version
8. Pull the strap (E) to remove the heat exchanger
and the leakage tray (F).
9. Remove the bypass duct (G) in the left-hand
version of the ComfoAir Standard.
E
F
ComfoAir Standard – Right-hand version
8. Remove the bypass duct (G) in the right-hand
version of the ComfoAir Standard.
9. Pull the strap (E) to remove the heat exchanger and
the leakage tray (F).
E
F
10. Remove the heat exchanger from the leakage tray
(F).
G
G
17 - EN