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 learn more about the industry, you’ll find everything you need to navigate our product lineup with ease.

WC - V Series

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

F–First Co.

First Co. is a leading manufacturer of multi-occupant and commercial industry HVAC products.

Cabinet Style

C–Concealed
S–Slope Top
F–Flat Top

A concealed cabinet will hide the unit to blend with room structure. Sope top cabinets discourage placing objects on top and help maintain airflow, while flat top cabinets are the simple and traditional design.

Coil Configuration

30–2 Pipe, 3 Row
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 are a allowing it to transfer more heat to the air passing 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.

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.

Option

Thermostat

NC–No Controls

Thermostat has no controls.

Valve Package

Contact Factory for Options