Nomenclature Guide

This page is your go-to resource for understanding the model numbers and codes used in our products. Whether you’re looking to decode specifications or streamline your ordering process, you’ll find everything you need to navigate our product lineup with ease.

WC - V Series

E-Select Nomenclature

NOTE:

Not all descriptors may appear for each model. See individual product specification documents for complete model number configuration options.

Glossary

Section	Digit Codes	Description
Brand	A–AE Air	AE Air is the commercial division of First Co. and specializes in Chilled Water units and Water Source Heat Pumps.
Cabinet Style	C–Concealed S–Slope Top F–Flat Top	A concealed cabinet will hide the unit to blend with room structure. Slope top cabinets discourage placing objects on top and help maintain airflow, while flat top cabinets are the simple and traditional design.
Coil Configuration	3 or 30 – 2 Pipe, 3 Row 4 or 40 – 2 Pipe, 4 Row 31 – 4 Pipe 3 Row Cooling, 1 Row HW 41 – 4 Pipe 4 Row Cooling, 1 Row HW	A 2-pipe system has one pipe for hot water supply and one for return, and can provide heating or cooling at any given time depending on the water source. A 4-pipe system has two separate pipes for hot water and two for chilled water allowing for simultaneous heating and cooling in different zones of a building. Multiple rows of tubes increase the coil’s surface area allowing it to transfer more heat to the air pass ing over the coil.
Coil Connection Side	L or LH – Left Hand R or RH – Right Hand	The hot water supply should be connected to the bottom connection of the coil on one side. Please select which side of the unit you prefer the coil connection.
Controls	A–Line Voltage B–Control Voltage (24V)	Amount of voltage that operates the control s system
Motor Type	P-PSC E–ECM	Permanent Split Capacitor motors run at a fixed speed and operate at full power regardless of the demand for heating or cooling. Electronically Commutated Motors are a type of variable speed motor with built-in inverters and microprocessors that adjust speed based on demand.
Series	VCB, VFB, VSB WCB	Name of product family or model name
Unit Size	CFM	An air-conditioner’s unit size or nominal capacity is the output level it can handle when functioning in either cooling or heating mode. Cubic feet per minute (CFM) measures how much airflow volume passes through a space in a minute.
Voltage	120 / 1Ph / 60Hz 208 / 1Ph / 60Hz 230 / 1Ph / 60Hz 277 / 1Ph / 60Hz	Voltage is the electrical pressure that pushes an electric current through a circuit. Higher voltage indicates a more powerful pressure. Most HVAC systems use with 115 (120)V or 230V depending on size and capacity.
OPTIONS
Control Package	0 – No Controls A – Non – Programmable Manual B – Non – Programmable Auto C – Non – Programmable w/LCD Display D – Programmable w/LCD Display E–Programmable w/Large LCDDisplay F–Fan Switch Only	The control package refers to the type of thermostat you select: automatic which functions on a schedule, or manual, with a display or without. The f an switch only circulate s conditioned air without actively cooling the air. This can make you feel comfortable without increasing your energy costs.
Damper	0 – None D – Motorized Damper M – Manual Damper	Manual dampers are adjusted by hand, while motorized dampers are controlled remotely or automatically.
Drain Pan	G–Galvanized Steel S–Stainless Steel	Galvanized Steel Drain Pans are a cost – effective option with moderate corrosion resistance. Stainless Steel Drain Pans offer superior durability and corrosion resistance.
Insulation	0 – Std Fiberglass C – Closed Cell Foam F – Foil Faced Insulation	General Insulation is available in a variety of types and can be selected based on specific product or environmental needs. Closed Cell Foam insulation is made from a dense foam of tightly packed “closed cells” which provides high thermal resistance. Foil-Face Insulation has a reflective foil layer attached to one or both sides which reflects radiant heat, reducing heat transfer.
Heat Option	kW Heat	A higher kW in HVAC indicates more capacity for heating or cooling, but it must be matched with the specific requirements of the space and considered alongside efficiency ratings to ensure optimal performance and energy consumption.
Thermostat	NC–No Controls	Thermostat has no controls.
Thermostat Mount	1-Unit Mount 2–Wall Mount 3-ADA Unit Mount	The thermostat can be mounted directly to the unit, on a wall, or in a handicapped accessible location on the unit. The thermostat can also be programmable or set at a fixed temperature.
Valve Package	Contact Factory for Options