Bard W24G2DA Installation Instructions Manual

Contents

Bard W24G2DA Installation Instructions Manual Manual pdf 20 page image

Manual 2100-592CPage 20 of 69Electrical GroundingWhen installed, the furnace must be electricallygrounded in accordance with local codes or in theabsence of local codes, with the National ElectricalCode, ANSI/NFPA 70, or Canadian Electrical Code,CSA22.1, latest edition. Use a copper wire from greenground wire on the furnace to a grounded connectionin the service panel or a properly driven and electricallygrounded ground rod. See Table 1 for proper groundwire size.Field-Installed EquipmentWiring to be done in the field between the furnaceand devices not attached to the furnace, or betweenseparate devises which are field installed and located,shall conform with the temperature limitation forType T wire {63° F rise (36° C)} when installed inaccordance with the manufacturer’s instructions.Installation of Flexible Conduit Through Return AirOpeningNOTE: To allow proper clearance between the controlpanel and any vent options, 90° conduitfittings must be used on the back of thecontrol panel.Installing Conduit (See Figure 10)1. Remove conduit access panel if required to gainaccess to area behind control panel.2. Remove low voltage and high voltage knockoutslocated in rear of control panel.3. Run low voltage conduit through 7/8 bushinglocated in conduit entrance plate and secure to lowvoltage opening in rear of control panel.4. Run high voltage conduit through 1-3/4 bushinglocated in conduit entrance plate and secure tohigh voltage opening in rear of control panel.5. Replace conduit access panel if required tocomplete installation.6. Seal around conduit in conduit entrance plate.WARNINGFailure to provide a proper electrical groundcould result in electric shock or fire.15. WIRING – MAIN POWERRefer to unit rating plate for wire sizing information andmaximum fuse or circuit breaker size. Each outdoorunit is marked with a “Minimum Circuit Ampacity”.This means that the field wiring used must be sized tocarry that amount of current. All models are suitableonly for connection with copper wire. Each unit and/orwiring diagram will be marked “Use Copper ConductorsOnly”. These instructions must be adhered to. Referto the National Electrical Code (NEC) for completecurrent carrying capacity data on the various insulationgrades of wiring material. All wiring must conform toNEC and all local codes.The electrical data lists fuse and wire sizes (75° Ccopper) for all models.The unit rating plate lists a “Maximum Time DelayRelay Fuse” or circuit breaker that is to be used withthe equipment. The correct size must be used forproper circuit protection and also to assure that therewill be no nuisance tripping due to the momentary highstarting current of the compressor motor.The disconnect access door on this unit may be lockedto prevent unauthorized access to the disconnect. Toconvert for the locking capability, bend the tab locatedin the bottom left hand corner of the disconnectopening under the disconnect access panel straightout. This tab will now line up with the slot in the door.When shut, a padlock may be placed through the holein the tab preventing entry.See “Start Up” section for important information onthree phase scroll compressor start ups.WARNINGFor personal safety, turn off electric powerat service entrance panel before making anyelectrical connections. Failure to do so couldresult in electric shock or fire.WARNINGFailure to provide an electrical power supplyshut off means could result in electric shock orfire.