MTD ERV 365, ERV 350 manual Setting the Air Specifications, Maintenance by the Installer

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4.5 Setting the Air Specifications				tions so that they are all in the minus range.
The MTD-ERV 350 must be set after installation.				Ensure also that a supply and an exhaust
				valve remain fully open.
This can be performed using the air specifica-
tions of the MTD-ERV 350 shown above.		•	Change the fan settings in the P menus P30 to
ϖ	Setting the normal air volume ‘nL’ corre-
			P37 via the CC Ease operating unit.
	sponds to the presetting of the G 90.
ϖ			–	Select the lowest possible setting in or-
	Setting the normal air volume ‘nL’ corre-
				der to minimise energy consumption.
	sponds to the presetting of the G 91.
			–	Ensure that the ratio of the air volumes be-

The standard settings of the MTD-ERV 350, nL,	tween high, medium and low remains the
	same.
are as follows:

Position ABSENT	15%
Position LOW	35%
Position MEDIUM	50%
Position HIGH	70%

The standard settings of the ComfoAir 350, HL, are as follows:

Position ABSENT	15%
Position LOW	40%
Position MEDIUM	70%
Position HIGH	90%

TosettheMTD-ERV 350(afterinstallation),proceed as follows:

•Switch the MTD-ERV 350 to the setting mode.

–Press simultaneously for two seconds on " " and " ".

–Wait until "InR" appears on the CC Ease display.

In setting mode, bypass and preheater are always deactivated. The MTD-ERV 350 switches the setting mode off again automatically after 30 minutes.

•Close all windows and outside doors.

•Close all inside doors.

•Check thepresenceofaircirculationsystemsin the building (at least 12 cm2 per l/s).

The air circulation systems in the build- ing must achieve at least 12 cm2 per l/s.

•Check whether both fans function in the three speed ranges.

•Switch the MTD-ERV 350 to the high position.

•Install all the valves and set them according to

the instructions or as in the reference dwelling. If no data are known:

–Install the valves and open them as far as possible.

–Measure theairvolumes,firstthesupplyair and then the exhaust air.

–differ by more than approx. 10% from the nominal air volumes and the majority of the deviations are in the plus range, adjust the fan so that all the deviations are in the plus range. If the majority of the deviations are in the minus range, adapt all the devia-

Use the MTD-ERV 350 air specification diagram for setting the fans.

•If the previously set air volumes still differ too much:

– Adjust the valves further.

•Checkthewholesystemagainafteradjustment of all the valve stages.

•Switch the MTD-ERV 350 (back) to ventilation position 2.

4.6Maintenance by the Installer

AsinstalleryouhavetoservicetheMTD-ERV 350as follows:

•Inspect the heat exchangers and fans

•Clean the filter if a preheater is installed.

Thesemeasuresaredescribedinmoredetailbriefly in the following sections.

If these measures are not performed (regularly), there is a danger that the MTD-ERV 350 will cease to function cor- rectly.

4.6.1 Inspection of Heat Exchanger and Fans

Thefansandtheheatexchangermustbeinspected every 4 years.

•Remove the mains plug (A) from the plug sock- et.

•Pull the filters (B) out of the MTD-ERV 350.

•Remove the front plate by removing the screws

(C).

•Push the front plate in the direction of the ar- row and remove it from the MTD-ERV 350.

•Remove the sealing plate by removing the screws (D).

34 Instructions for the Installer