Fisher & Paykel DD247, DD607 service manual Integrated Single Drawer Venting some models only

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3.12 Drying Cycle

Immediately after water from the final hot rinse has been drained from
the tub, the drying cycle begins.
The drying fan draws air through the vent in the rear into the tub where
it absorbs water from the dish load. The moisture-laden air is then
mixed with a larger quantity of ambient air (drawn from the kitchen),
to minimise the amount of vapour visible when air is exiting from the
bottom of the drawer front.
A flap valve is located in the fan housing. This is closed to prevent
moist air from entering the space behind the door panel during the	
wash, reducing the possibility of damage to the controller and LCD. It
opens whenever the fan is running.
The fan runs continuously during the drying cycle for various times depending on the program selected, and
will restart if the tub is opened and closed again. After the wash program is complete (when it beeps and the
LCD shows 00), the lid drives up, and the fan continues to run for anything up to 120 minutes depending on the
program, but will not restart if the tub is opened or if a button is pressed.
NOTE: The vented integrated single product does have a dwell/pause phase before commencing the fan, this is
to allow the water to condense back onto the tub.

3.12.1 Integrated Single Drawer Venting (some models only)

Some single integrated models (depending on market) have a vent which runs internally inside the product and vents the air through the rear of the product via an exhaust pipe. This pipe is connected to the product at an elbow and will vent the air out through the joinery kickstrip.

This venting allows a longer door to be fitted to the customers joinery, reducing the required panel gap at the front of the product.