Specifications

Page 5 of 8
9/25/2013 1:47 PM
AC2000 Data Sheets, Version 6.30
Job Order:
13331
Revision:
C
Data Sheets
Air Handling Unit Information
Sales Order:
130079-01
Dwg. No.:
E-13331-1
RCC Bypass 36CD50
Distribution Diffuser
Damper No. that have modulating operators: 2,3,5 & 6 or have two-position operators: 1
Notes:
1) Outside air damper (low leakage type):
a) Blade seal and bearings shall withstand temperatures from -30°F to 150°F.
b) Supplied with stainless steel bearing sleeves, shaft, and linkage.
c) BAH to provide with an open & closed limit switch on the damper -(2) Allen Bradley catalog number 440P-MALS11E.
d) BAH to provide a TAC (formally Siebe) pneumatic actuator catalog no. MK-3121, spring fail closed.
e) With actuator, provide solenoid valve (ASCO catalog number 8320G184, 24VDC).
f) BAH to provide a brass needle valve on exhaust port of the solenoid valve & adjust so damper closes in 45 seconds.
g) BAH to provide a muffler on the exhaust side of the O/A damper solenoid valve. If installed inside the control
enclosure, the exhaust air must be ported to the outside of the enclosure.
h) BAH to provide a 1/4" tube fitting for customer use on the exterior of the unit. The fitting will be used to provide
supply air to the damper. BAH to extend pneumatic tubing from the fitting to the supply side of the damper actuator.
i) Actuator is to mount on the interior of the unit.
2) Face-and-bypass dampers (Dehumidifier and Final Heating Coil/Re-Cooling Coil):
a) Blade seal shall withstand temperatures from -30°F to 250°F.
b) Supplied with stainless steel shafts and bearing sleeves suitable for high temperature conditions.
c) Spring return actuator shall be Johnson Controls No. M9220-HGA-3 (24VDC), wired to common elec enclosure.
Provide a 500 ohm resistor for 4-20 mA control of the actuator. Mount resistor in common elec enclosure.
d) Actuator direct coupled to damper shaft. Face and bypass dampers are linked together. Tie rod shall be
minimum 1/2" diameter and/or weld steel angle to reinforce rod to ensure rigidity during high torque conditions.
e) Actuator is to mount on the interior of the unit.
f) BAH to cycle the F&BP damper and adjust the span to where the “4 mA” position is the same as the fail closed
position (bypass is open), the “12 mA” position to be 50% open, and the “20 mA” position is the face damper fully
open and the bypass is closed.
3) All damper jackshafts to be larger than standard (3/4" minimum).
4) The balancing damper is provided with a manually operated locking hand quadrant.
5) The final heating coil face & bypass damper will be linked to the downstream final heating coil face damper. The
damper jackshafts to extend through the casing wall on the RH side of the unit. The interconnecting linkage will be
located on the exterior of the RH side of the unit. BAH to seal all penetrations through the unit casing. The actuator
model and quantity of actuators may change or increase depending on what is required for proper operation. BAH to
determine and advise.
BAH Full-Width x Full-Height
6
Elec.Damper Ruskin x 181AL
13 ALCD50 1
4
Balancing Damper Ruskin
4 to 20 mA
4 to 20 mAOpposed Open BAH
N/AN/A N/A N/A
BAH
Elec.
Elec.
Closed
36 x Opposed
x 13 AL Opposed
BAH
AL18 x 12 BAH
Des. Face Damper
2
Open
Ruskin CD50 Opposedx 24 AL 4 to 20 mA
3
Des. ByPass Damper Ruskin CD50 1 36
130
1
Outside Air Damper Ruskin CD50 1
Blade Fail Pos. Act. By Type
N/A
Signal
Parallel Closed Pneu.
Duty Type Mfr. Model Qty Mat'lW IN xHIN
MIXING & DISTRIBUTION
No.
4 to 20 mAClosed BAH Elec.CD50 2 36 x 22 AL Opposed
5
HC Face Damper Ruskin