Press Unit Prepress.pdf 1 02/07/2014 10:29:09 Pioneering for You Range 2014 1 or 2 pumps are controlled by the Wilo comfort controller**. loop. Installation and operating instructions Wilo pressure boosting systems (DEA). Captions: Fig. 1a Example of a pressure boosting system with MHI. Hi all, Anyone know how to reset the service hours on the wilo comfort series pressurisation unit. Have the manual for it but it doesn't say anything about.1-2 pumps per system; Floor or Wall mount available; Fully enclosed zinc plated steel cabinet; Backlit OLED display; Non-return valve, pressure side Product Description. This Wilo Comfort twin pump pressurisation unit (duty/standby) is for heating or chilled water systems up to and including 3.5, 1 or 2 pumps are controlled by the Wilo comfort controller**. Servicing Instructions Alpha Plus Units for Domestic Hot water and Low Pressure or Direct en Installation and operating instructions. Wilo-Comfort Series Pressurisation Unit. 4. 523. 676-Ed.01. / 2012. -. 05-Wilo. Models: P130-WM. P135. P135-Midi.