2GENERALThe 40WAD concealed duct indoor fan coil unit offers sim-ple operation and long service with proper installation, opera-tion, and regular maintenance.The equipment is initially protected under the manufactur-er’s standard warranty; however, the warranty is provided un-der the condition that the steps outlined in this manual for ini-tial inspection, proper installation, regular periodic mainte-nance, and everyday operation of the unit be followed in detail.This manual should be fully reviewed in advance before initialinstallation, start-up and any maintenance. Contact your localsales representative or the factory with any questions BEFOREproceeding.See Fig. 1 for model number nomenclature. Table 1 listsphysical data for each unit size. Figure 2 shows unit dimen-sions. See Fig. 3 for fan performance curves.CAUTIONDO NOT re-use compressor oil or any oil that has beenexposed to the atmosphere. Dispose of oil per local codesand regulations. DO NOT leave refrigerant system open toair any longer than the actual time required to service theequipment. Seal circuits being serviced and charge withdry nitrogen to prevent oil contamination when timelyrepairs cannot be completed. Failure to follow these proce-dures may result in damage to equipment. For informationabout replacement oil type and viscosity, see the Single-Phase VRF Outdoor Unit installation instructions.Fig. 1 — Model Number NomenclatureLEGENDVRF — Variable Refrigerant Flow40 WA D 007 --- 340 — Indoor UnitProduct TypeWA — Single-Phase VRFVoltage (V-Ph-Hz)3 — 208/230-1-60Model TypeD — Concealed DuctedBlankEquipment TypeCapacity (Btuh)009 — 9,000012 — 12,000015 — 15,000018 — 18,000a40-1846024 — 24,000007 — 7,000A40-1913