Bard W18HB-A Installation Instructions Manual

Also see for W18HB-A: Installation instructions

Manual 2100-703Page 6 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 floorplans and/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 capable ofcarrying the weight of the installed unit. Metal buildingsmust contain structural components to support the unitweight. If heavily corrugated siding is present, it mayneed to be trimmed and flashed to provide a flat, evensurface to attach and seal the unit to 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.NOTE: Before mounting the heat pump unit,consideration should be given to thecondensate removal from the outdoor coil whenin heating mode. The unit must be mountedhigh enough above grade to ensure that icewill not build up under the unit and come intocontact with the base of the unit. If allowed,this could cause damage to the coil and otherbase components. Also, be sure there are noair obstructions to the sides or front of theunit, such as bushes or fences, that wouldinhibit condenser airflow.Condensate Water DrainageReview all codes and requirements for unit condensatedrainage. A clear, flexible PVC drain hose (3/4" ID, 1"OD) extends from the drain pan in the upper section ofthe unit and extends down to the unit base. An openingis supplied towards the back of the unit base for thedrain hose to pass through, and the hose extends 1"to 2" below the unit base. Water removed from theindoor air (condensate) will be expelled from the unitin large amounts during cooling operation through thehose. Units running in cooling operation in cold outdoorbelow freezing conditions can cause the condensateto freeze after leaving the drain hose. In the event thedrain hose is connected to a drain system of some type,it must be an open or vented type system to ensureproper drainage 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 cabinets