Model Number Nomenclature

12 VC B 0 - 126 - 31 R - 2B - N1

CFM (100'S)

3,4,6,8,10,12

Unit Style

VCB - Concealed VSB - Cabinet slope top VFB - Cabinet flat top

WCB - Recessed wall

Vintage

Electric Heat (KW)

Unit Voltage

126 - 120V-1PH-60Hz

246 - 208/240V-1PH-60Hz

225 - 220V-1PH-50Hz

Control Options(see below)

NC = No Controls

Valve Package

See page 6 & 7

Coil Connection

R - Right Hand

L - Left Hand

Coil Type

3 - 3 row

4 - 4 row

31 - 3 row cool, 1 row heat

41 - 4 row cool, 1 row heat

CONTROL OPTIONS FOR ELECTRIC VALVE PACKAGES

2 Pipe - Valve Cycle

SYSTEM

THERMOSTAT

CONTROL

CHANGEOVER CONTROL

 

THERMOSTAT

 

CONTROLS

VALVE TYPE

and LOCATION

 

ORDER OPTION

 

 

 

 

 

 

 

Heat-Off-Cool

Motorized 2-way

Manual

A1

- Unit Mount

 

Constant Fan

or 3-way.

Hot - Cool Switch

A2

- Wall Mount

 

Hi-Med-Low

Normally closed.

on Thermostat

A3

- Unit Tamperproof

 

 

 

 

 

 

Heating and

 

Motorized 3-way

Automatic (1)

B1

- Unit Mount

Cooling

 

Normally closed.

Aquastat - Factory

B2

- Wall Mount

 

On-Off

 

Mounted on Supply Line

B3

- Unit Tamperproof

 

Constant Fan

 

 

 

 

 

 

Manual

 

 

 

Hi-Med-Low

Motorized 2-way

C1 - Unit Mount

 

 

or 3-way

Summer-Winter Switch

C2 - Wall Mount

 

 

Normally closed.

(switch must be field supplied)

C3 - Unit Tamperproof

 

 

 

 

 

 

On-Off

Motorized 2-way

 

D1 - Unit Mount

Cooling Only

Constant Fan

or 3-way.

None

D2 - Wall Mount

 

Hi-Med-Low

Normally closed.

 

D3 - Unit Tamperproof

 

 

 

 

 

 

 

On-Off

Motorized 2-way

 

E1

- Unit Mount

Heating Only

Constant Fan

or 3-way.

None

E2

- Wall Mount

 

Hi-Med-Low

Normally closed.

 

E3

- Unit Tamperproof

 

 

 

 

 

 

4 Pipe - Valve Cycle

 

 

 

 

 

 

 

 

 

 

SYSTEM

THERMOSTAT

CONTROL

CHANGEOVER CONTROL

 

THERMOSTAT

 

CONTROLS

VALVE TYPE

and LOCATION

ORDER OPTION

 

 

 

 

 

 

 

Heat-Off-Cool

Motorized 2-way

Manual

M1

- Unit Mount

 

Constant Fan

or 3-way.

Hot - Cool Switch

M2

- Wall Mount

Heating and

Hi-Med-Low

Normally closed.

on Thermostat

M3

- Unit Tamperproof

 

 

 

 

 

Cooling

On-Off

Motorized 2-way or

Automatic

N1 - Unit Mount

 

Constant Fan

3-way. Normally

4 deg. Neutral Dead Band

N2 - Wall Mount

 

Hi-Med-Low

closed.

for sequenced heating &

N3 - Unit Tamperproof

 

 

 

cooling, DPDT

 

 

3-SPEED FAN SWITCH ONLY (no thermostat)

L1 - Unit Mount

L2 - Wall Mount

L3 - Unit Tamperproof

NOTE: 1. B1 option includes factory installed aquastat

Catalog No. VCBG1106 (Replaces VCBG803)

-8-

Page 8
Image 8
First Operations 300-1200 CFM manual Model Number Nomenclature, System Thermostat Control Changeover Control Controls

300-1200 CFM specifications

First Operations 300-1200 CFM units are engineered to deliver exceptional performance in a variety of industrial and commercial applications. These systems are tailored for facilities seeking efficient air movement and top-tier environmental controls.

One of the standout features of the 300-1200 CFM units is their impressive airflow capacity. With a range spanning from 300 to 1200 cubic feet per minute, these systems can accommodate small workshops to larger warehouses, ensuring optimal air circulation. This flexibility makes them suitable for various settings, including manufacturing plants, data centers, and retail environments.

Incorporating advanced technologies, these systems boast high-efficiency motors that not only reduce energy consumption but also minimize noise levels. This is particularly important in environments where sound control is vital. The variable speed drives allow for precise adjustment of airflow, providing users with the ability to tailor the performance to specific requirements.

Another key characteristic is the robust construction of First Operations units. Designed with durability in mind, they feature heavy-duty enclosures that can withstand the rigors of daily use in demanding conditions. This longevity is essential for reducing maintenance costs and enhancing the return on investment for businesses.

First Operations also prioritizes ease of use and serviceability. Many models include accessible filters, simplifying the maintenance process and promoting indoor air quality. The intuitive control systems make it easy for operators to manage settings and monitor performance, ensuring that the unit operates within its optimal parameters.

Energy efficiency is increasingly a priority for businesses aiming to reduce operational costs and minimize their environmental footprint. First Operations units are engineered to meet strict energy guidelines, helping users achieve their sustainability goals without sacrificing performance.

In conclusion, the First Operations 300-1200 CFM units represent a blend of advanced technology, robust design, and operational flexibility. Their standout features, such as high-efficiency motors, customizable airflow options, and user-friendly controls, make them a top choice for industries requiring reliable air management solutions. As organizations continue to seek ways to enhance efficiency and reduce energy costs, these units offer an exemplary solution to meet those needs.