Item Description.pdf

DEPARTMENT OF THE AIR FORCE

OKLAHOMA CITY AIR LOGISTICS COMPLEX (OC-ALC)

TINKER AIR FORCE BASE OKLAHOMA

M22-084 20S048 Outdoor Air System

Item Description

One (1) each Dedicated Outdoor Air System (DOAS) with Energy Recovery with the below specifications and configurations:

1) Energy Recovery Type: Static plate, total energy transfer

2) Configuration:

a) Installation Location: Indoor unit

b) Supply air fan location: before cooling coil

c) Electrical Service:

i) 460 volt/ 3 phase/ 60 hertz

ii) Motors: Qty 2, Direct Drive motorized impeller

iii) Fan Control: ECM

d) Cooling:

i) Chilled water cooling coil, 100% water

e) Heating:

i) Integrated Gas Heat Module

ii) Heater Size: 75 MBH

iii) Heater Fuel type: Natural Gas, 5.0 – 13.5 inches water column (wc)

iv) Modulating 5:1

v) Separated combustion inlet

vi) Horizontal airflow

vii) Direct Spark ignition

f) BACnet Communication Compatibility

g) Drain Overflow switch

h) Recirculation Damper

i) Integrated Programmable controls

j) Fused Disconnect

k) 1” insulation

3) Airside Cooling Conditions:

a) Airflow: 1850 standardcubic feet per minute (scfm)

b) Altitude: 1299 feet

c) Entering dry bulb temperature: 81.7 degrees Fahrenheit

d) Entering wet bulb temperature: 70 degrees Fahrenheit

e) Leaving dry bulb temperature: 52 degrees Fahrenheit

f) Leaving wet bulb temperature: 52 degrees Fahrenheit

4) Internal Fluid Cooling Conditions:

a) Fluid: Water, 100%

b) Entering Fluid Temperature: 45 degrees Fahrenheit

c) Fluid Flow Rate: ~22 gallons per minute

5) Cooling Performance:

a) Total Capacity: 110550 Btu/hr

b) Sensible Capacity: 60890 Btu/hr

c) Leaving Air dry bulb temperature: 51.8 degrees Fahrenheit

d) Leaving Air wet bulb temperature: 51.4 degrees Fahrenheit

e) Face Velocity: 222 feet/minute

f) Leaving Fluid Temperature: 55.1 degrees Fahrenheit

g) Air Pressure Drop: 0.15 inches water column (wc max)

6) Filters: MERV 8, 20”x20”x2”

7) Inlets/Outlets dimensions:

a) Outside Air / Return air Inlets: 36” x 16”

b) Supply Air Outlet: 24” x 16”

c) Exhaust Air Outlet: 20” x 16”

8) Unit Dimensions:

a) Maximum Length: 150”

b) Maximum Width: 95”

c) Maximum Height: 72”

d) Maximum Weight: 3400 pounds

9) Heat Exchanger:

a) Summer Supply Air Entering Air dry/wet bult temperatures: 99.5/73.9 degrees

Fahrenheit

b) Summer Supply Air Leaving Air dry/wet bult temperatures: 81.7/67.7 degrees

Fahrenheit

10) Airflow Orientation: see illustration