Ochsner Air Eagle 717 Operating And Installation Manual

Contents

Ochsner Air Eagle 717 Operating And Installation Manual Manual pdf 18 page image

BA_OCHSNER AIR EAGLE_414_717_V06_EN.docx Page 18 of 76Venting the systemFigure 19: Indoor unit air vent valveCAUTIONClose the valve cap after venting.Safety valveNOTEWater will escape when the safetyvalve is opened. Route the drain hoseinto the sewage drain at the rear of theindoor unit. The drain must not bepermanently connected to the sewagedrain! A funnel with a siphon must beprovided.- Size the drain hose to ensure water can drainfreely when the safety valve is fully open.- Ensure that the safety valve drain hose is opento the atmosphere.- Route the safety valve drain hose with acontinuous slope to the drain.- Secure the drain hose to prevent movementwhen water is running out.Expansion vessel/system pressurePreparation for filling:A 24 l expansion vessel is installed in the heatpump Golf-Midi indoor unit. In buffer systems orsystems with higher capacity, this expansionvessel should be checked. If required, install anadditional expansion vessel in the system(externally, not inside the appliance).Figure 20: Draining and filling detailed viewBefore filling the system, check the pre-chargepressure in the expansion vessel. This must bematched to the building height.- Static head: Difference between highest andlowest points in the system.- Pre-charge pressure = static head + 0.3 bar- System charge pressure = pre-charge pressure+0.5 bar (when cold)- Max. permissible operating pressure: 2.6 bar.Select a safety valve with 3.0 bar.See EN ISO 4126-1:2013-10-15, part 1: Safetyvalves.- Flush the heating system thoroughly beforefilling.- Only fill with water of potable quality.CAUTION!Replace plastic closures withsuitable plugs.Air vent valveDrain and fill openingExpansion vessel