Technical Specifications - Johnson Controls - LIT-1900208 - Control Damper - VD-1250 Volume Control Damper

VD-1250 Series Aluminum Volume Control Dampers Catalog Page

Brand
Johnson Controls
Product name
VD-1250 Volume Control Damper
Document type
Catalog Page
Document number
LIT-1900208
Revision date
2021-03-10
Language
English
Table 1. Technical Specifications
VD-1250 Series Aluminum Control Dampers
Leakage resistance VD-1250 3 cfm/sq. ft maximum at 1 in. static pressure

8 cfm/sq. ft maximum at 4 in. static pressure

11 cfm/sq. ft maximum at 8 in. static pressure up to 48 in. wide

Operating torque VD-1250 0.5 in. static pressure, 100 fpm fully open approach velocity

1 in. static pressure, 1,000 fpm fully open approach velocity

10 in. static pressure, 2,500 fpm fully open approach velocity

7 lb·in/sq. ft

7 lb·in/sq. ft

9 lb·in/sq. ft

Pressure drop (inches WG) - Fully open Size (in.) Approach velocity (fpm)
1,000 2,000 3,000 4,000
VD-1250 24 x 24 0.02 0.08 0.17 0.3
36 x 36 0.02 0.04 0.10 0.2
Velocity requirements   Width (in.)
12 24 36 48
VD-1250 6,000 fpmat 13 in. static 5,000 fpmat 10.8 in. static 4,000 fpmat 8.5 in. static 4,000 fpmat 6.0 in. static
Temperature rating Standard and extended operating conditions VD-1250 -72°F to 275°F (-58°C to 135°C)
  Actuator -4°F to 122°F (-20°C to 50°C)
Approximate weight VD-1250 7 lb/sq. ft (3.2 kg/sq. ft)
Actuator 2.9 lb (1.6 kg) per actuator
Note: All performance data is determined using instrumentation and procedures at an AMCA Certified Laboratory in accordance with AMCA Standard No. 500, Test Methods for Louvers, Dampers, and Shutters.