Bard W42AC-A Installation Instructions Manual

Also see for 11EER WA Series: Installation instructions Installation instructions User's Application Guide Installation instructions Installation instructions

Contents

Bard W42AC-A Installation Instructions Manual Manual pdf 8 page image

Manual 2100-692Page 8 of 40INSTALLATIONBasic Installation Design andApplication PlanningSuccessful unit installations require proper planningand site inspection before installation begins. Beforeinstalling the wall mount unit, make sure that allservice and airflow clearances are met and that theunit can meet all applicable code and regulationrequirements. Provide an inspection of both the insideand outside of the structure by reviewing floorplansand/or visiting the installation site.Wall ConstructionThe wall must be inspected to ensure that the weightof the unit can be supported. Be sure to review allapplicable construction codes and regulations includingseismic requirements. When inspecting wood framewalls, the wall construction must be strong andrigid enough to carry the weight of the unit withouttransmitting any unit vibration. It is important thatthe side unit wall mounting lags and optional bottombracket are supported by structural members insidethe wall cavity. Concrete block and brick walls must bethoroughly inspected to ensure that they are capableof carrying the weight of the installed unit. Metalbuildings must contain structural components tosupport the unit weight. If heavily corrugated sidingis present, it may need to be trimmed and flashed toprovide a flat, even surface to attach and seal the unitto the wall.Outdoor Area InspectionInspect the outdoor area of the jobsite or reviewconstruction plans and locate the area where the wallmount is to be installed. The outdoor area must befree from obstructions including fences, bushes andwalls that will hinder unit operation regarding outdoorcondenser airflow and unit serviceability. Do notinstall units in enclosed areas that limit the amountof ambient temperature airflow. Warm air will exitthe front condenser section of the unit, and outdoorambient temperature air must be able to enter sideintake condenser openings of the unit. Portable ormodular building placement must be in a way that thewall mount units have a constant supply of outdoor airfor proper unit operation. Make sure that the servicepanels of the unit are accessible. Inspect wall surfacesfor obstructions that could hinder unit installationand servicing including outdoor electrical conduits,junction boxes, wall drains, vent hoods, windows, doors,overhangs and posts.Condensate Water DrainageReview all codes and requirements for unit condensatedrainage. A plastic drain hose extends from the drainpan in the upper section of the unit and extends downto the unit base. An opening is supplied towardsthe back of the unit base for the drain hose to passthrough, and the hose extends 1" to 2" below the unitbase. Water removed from the indoor air (condensate)will be expelled from the unit in large amounts duringcooling operation through the hose. Units runningin cooling operation in cold outdoor below freezingconditions can cause the condensate to freeze afterleaving the drain hose. In the event the drain hoseis connected to a drain system of some type, it mustbe an open or vented type system to ensure properdrainage throughout seasonal use.Indoor Ducted and Non-DuctedApplicationsAir distribution inside the structure being conditionedplays an important role in making sure the area isa consistent temperature. Improper air distributioncan result in areas being cooler or warmer, electricalequipment not receiving sufficient airflow or occupancydiscomfort felt inside an area. Thermostat or indoortemperature sensor placement inside the area beingconditioned also plays an important role in indoorclimate control.Indoor Supply AirflowIndoor installation areas must provide a non-restrictivepath for the conditioned supply air to leave supplygrilles and registers. Inspect the area to ensure that allindoor portions of the room or rooms will have accessto supply air. Ductwork may be used to ensure properair circulation and all provided ductwork guidelines andclearances must be followed. Non-ducted applicationsmust use a supply louver grille installed over the supplyopening inside the room. Be sure to adjust supplydeflectors to properly disperse the conditioned supplyair to all parts of the room. Avoid closing sections ofthe supply grilles which would cause unneeded supplyduct pressurization.Indoor Return AirflowA non-restrictive path for room air returning to thecenter section of the unit must be provided insidethe room. Avoid placing objects including furniture,electronics equipment, equipment racks and cabinetsdirectly in front of the unit return grilles and registers.Bard recommends at least 2' between solid objectsand return grilles or registers. Ductwork may be used toensure proper air circulation and all provided ductworkguidelines and clearances must be followed. Non-ducted applications must use a return louver grilleinstalled over the return opening inside the room.Ducted ApplicationsField fabricated supply and return duct work may beinstalled inside the structure being conditioned. A short