Daikin AVS Installation Manual

Also see for AVB: Installation and maintenance manual

Contents

Daikin AVS Installation Manual Manual pdf 16 page image

Page 16 of 60 IM 817-4Make Piping ConnectionsBe sure the hot and chilled water supply and return system arethoroughly flushed and cleaned before connecting piping to theunit ventilator. Debris in the lines can damage the unit.For All SystemsBe sure to install the control valve(s) on the correct unit ventilator.Indiscriminate mixing of valves in the field can result in valvesimproperly sized for the desired flow rate, which can result in pooroperation and coil freezeups. Install control valve so there is at least 2"(51mm) minimum clearance to remove the actuator from the valve body.Be certain that the control valve is installed correctly, with its orientationvertical. Valves should be installed at least 5º off center.Be certain that the control valves are installed with the properport orientation to provide proper flow and fail safe operation.Incorrect installation can result in improper unit operation, and/orthe possibility of coil freeze-up.With future servicing considerations in mind, use standard, field-suppliedshutoff valves and union connections; this permits easy removal of thecoil or control valve if servicing is required.While brazing, have an extinguisher readily available. Wearappropriate eye and hand protection. Ensure all areas withshared ventilation have ample fresh air ventilation.Proper ventilation is required for brazing. When brazing, be sure toprotect unit ventilator components from overheating damage (meltinginsulation, also damage to valves, wiring, electronics, sensors, etc.).Before filling, be sure to flush all piping adequately so that all debrisis removed. Debris can prevent proper valve operation, resulting inoverheating, overcooling, etc.Ensure proper insulation of supply and return piping. Proper insulationprevents loss of unit ventilator capacity, overheating of end compartment,and / or moisture dripping.The piping to and from the unit must be protected from outside air andfreeze conditions. The piping must be suitably insulated for condensationor heat lose or gain. Penetrations entering the unit end compartmentsmust be fitted/sealed for unit integrity.Refer to figure 32 and figures 26 and 27 and attach the unit ventilatorto the wall through the four (4) mounting holes provided, using field-supplied fasteners appropriate to the wall construction and the washersprovided in the brown envelope with these instructions (figure 37).Envelope also contains allen wrench to provide access to unit. Pushthe unit ventilator tight to the wall structure so that the outdoor air sealsare compressed. Secure the wall fasteners to prevent the unit ventilatorfrom moving and tipping over.Removemoldingsbehind unitUnit must be anchored to an internal wall column or other suitablesupport (see figure 32, page 14)Figure 36 - Setting The Unit Ventilator In PlaceFigure 35 - Leveling Legs LocationFigure 37 - Shipping Envelope Contents.Unit Ventilator InstallationBefore setting the unit ventilator in position, be sure that field-suppliedelectrical connections are in place, de-energized and in accordancewith the plans.Move the unit ventilator into position against the wall surface. Checkto see that the unit ventilator is level from end to end and back to front.Using a 4' level is recommended. Leveling bolts are located at eachend of the front kickplate (see figure 35).CAUTIONCAUTIONWARNINGCAUTIONFace and Bypass damper set-up is required at start-up.Failure to properly set-up Face and Bypass damper can result incontrol problems and unit damage not covered by warranty.Refer to Service Bulletin, UV-SB-106507312.NOTICE