AHU Specifications.pdf

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Attached to
Air Handler (AHU) Federal contract opportunity
Solicitation number
FA480925Q0050
Issued by
Department of the Air Force Air Combat Command

About this file

This document is a detailed technical specification for a Trane Performance Climate Changer Air Handler (AHU-2) for the SJAFB 3650 Dining Hall project. The air handling unit (Model CSAA004) is a unit size 4 indoor unit with a 2,200 cfm airflow capacity, featuring a 12.2-inch impeller fan operating at 3,334 rpm with 59.01% efficiency. The unit includes multiple integrated sections: air mixing, filter (with MERV 13 primary and MERV 8 pre-filters), heating coil (hot water, 64.83 MBh capacity), cooling coil (chilled water, 102 MBh total capacity), and a supply fan section.

Key technical specifications include a 2-inch double-wall foam insulated casing, galvanized steel panels, 2.5-inch integral base frame, and compliance with ASHRAE and AHRI standards. The unit is designed with features like parallel blade dampers, thermal breaks, stainless steel drain pans, and a motorized impeller control panel. The total unit dimensions are 58.0 inches high, 44.0 inches wide, and 130.6 inches long, with a rigging weight of 1,029 lb and an installed weight of 1,069 lb. The specification emphasizes energy efficiency, indoor air quality, and ease of maintenance through design elements like removable doors, service panels, and factory-installed drain and vent piping.

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HVAC Chiller System Justification and Approval Redacted.pdf PDF
Solicitation Amendment FA480925Q00500001 SF 30.pdf PDF
Solicitation - FA480925Q0050.pdf PDF

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Text version

Trane Performance Climate Changer Air Handler

Unit Overview - AHU-2

Application Unit Size External Dimensions Weight

Height Width Length Installed Rigging Indoor unit CSAA004 58.0 in 44.0 in 130.600 in 1069 lb 1029 lb

Quantity of Shipping Sections Largest Ship Split

Heaviest Ship Split Elevation Height Width Length

2 piece(s) 29.0 in 44.0 in 82.0 in 609 lb 0.00 ft Supply Fan

Airflow 2200. cfm Total Static Pressure 4.274 in H2O

Construction Features

Panel 2in. foam injected R-13 with thermal break

Panel Material

All unit inner panels -galvanized

Integral Base Frame 2.5in. integral base frame

Short Circuit

Current Rating

5 kA

Agency Approval UL listed unit

Unit Electrical

Circuit Voltage/Phase/Frequency FLA MCA Max Fuse Size

Circuit number 1 Supply fan motor(s) 460/3/60 4.25 A 5.31 15.00

Unit Controls Controller Type No controller

Warranty Warranty section Std. warranty only

Air mixing section - Position: 1

Openings

Face Path Type Airflow Face Velocity Area Pressure

Drop Hood

Back Outside Parallel blade damper 2200. cfm 1176 ft/min 1.87 sq ft 0.359 in H2O N/A

Top Return Parallel blade damper 2200. cfm 1176 ft/min 1.87 sq ft 0.414 in H2O N/A

Section Options

Door Location Both

CSAA

Quantity: 1 Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

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Filter section - Position: 2 Primary Filter

Type Frame Loading Airflow Face Area Face Velocity Condition Pressure

Drop Filter

Quantity Filter Size

4in.

cartridge -

MERV 13 -

standard

2in./4in.

combo w/ space for dual sensor

Side load filters 2200. cfm 5.56 sq ft 396 ft/min Mid-life 0.626 in

H2O 2.00 20x20

Prefilter

Type Airflow Face Area Face Velocity Condition Pressure Drop Filter Quantity Filter Size

2" Pleated media - MERV 8 2200. cfm 5.56 sq ft 396 ft/min Mid-life 0.609 in H2O 2.00 20x20

Filter Section Options

Door Location Both

Heating coil section - Position: 3

Coil Construction

Model Hot water - 5/8" Shipping Coil, General (5W)

Rows 1 Tube Diameter 5/8in. tube diameter (15.875 mm)

Coil Connection Standard Tube Matl/Wall Thickness .020" (0.508 mm) copper tubes

Fin Spacing 80. Per Foot Fin Material Aluminum fins

Fin Type Prima flo E (energy efficient) Face Area 4.00 sq ft

Coil (top/single) H x L 18 in. (457 mm) X 32" (813 mm) finned length

Casing Galvanized Turbulators Yes

Rigging Weight 28.4 lb Installed Weight 35.7 lb

Coil Section Options

Extended Drain and Vent YES Service Panel Both sides

Coil Performance

Capacity

Total 64.83 MBh

Air

Flow 2200. cfm Entering Dry Bulb 45.00 F Leaving Dry Bulb 72.17 F

Pressure Drop 0.080 in H2O Face Velocity 550. ft/min

Fluid

Flow 6.47 gpm Entering 180.00 F Leaving 160.00 F

Pressure Drop 0.85 ft fluid Tube Velocity 1.19 ft/s

Reynolds Number 15577.87 Type Water

Fouling Factor 0.00025 hr-sq ft-deg F/Btu Volume 0.87 gal

AHRI 410 Classification

AHRI 410 Classification AHRI ACHC Certified Data Generation Date 3/14/2025

Trane Select Assist update number 2930.

Note: Certified in accordance with the AHRI Forced-Circulation Air-Cooling and Air-Heating Coils Certification Program which is based on AHRI Standard 410 within the Range of Standard Rating Conditions listed in Table 1 of the Standard. Certified units may be found in the AHRI Directory at www.ahridirectory.org.

Access/blank/turning section - Position: 4 Options

Section Length 19.000 in Door Location 1 Both

CSAA

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Job Name: SJAFB 3650 Dining Hall AHU-2

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Cooling coil section - Position: 5

Coil Construction

Model Chilled water - 1/2" Unit Optimized, General (UW)

Rows 8 Tube Diameter 1/2in. tube diameter (12.7 mm)

Coil Connection Standard Tube Matl/Wall Thickness .016" (0.406 mm) copper tubes

Fin Spacing 129 Per Foot Fin Material Aluminum fins

Fin Type Delta flo H (Hi efficient) Face Area 4.51 sq ft

Coil (top/single) H x L 20 in. (508 mm) X 33" (838 mm) finned length

Casing Galvanized Turbulators Not Included

Rigging Weight 104.7 lb Installed Weight 137.4 lb

Coil Section Options

Extended Drain and Vent YES Drain Pan Stainless steel

Drain Pan Size Medium large Drain Connection Right

Minimum Trap Height (L) 8.695 in H Trap Dimension 5.130 in J Trap Dimension 2.565 in

Service Panel Both sides Door Location Both

Coil Performance

Capacity

Total 102.00 MBh Sensible 74.86 MBh

Air

Flow 2200. cfm Entering Dry Bulb 83.50 F Entering Wet Bulb 67.70 F Leaving Dry Bulb 52.62 F Leaving Wet Bulb 52.52 F

Pressure Drop 0.985 in H2O Face Velocity 487 ft/min

Fluid

Flow 20.40 gpm Entering 45.00 F Leaving 54.97 F

Pressure Drop 2.86 ft fluid Tube Velocity 2.33 ft/s

Reynolds Number 6817.89 Type Water

Fouling Factor 0.00000 hr-sq ft-deg F/Btu Volume 3.91 gal

AHRI 410 Classification

AHRI 410 Classification AHRI ACHC Certified Data Generation Date 3/14/2025

Trane Select Assist update number 2930.

Note: Certified in accordance with the AHRI Forced-Circulation Air-Cooling and Air-Heating Coils Certification Program which is based on AHRI Standard 410 within the Range of Standard Rating Conditions listed in Table 1 of the Standard. Certified units may be found in the AHRI Directory at www.ahridirectory.org.

Supply fan section - Position: 6

Fan Data

Wheel Diameter/Type/Class 12.2 impeller fan full width Fan Quantity 1

Discharge Location Top front Motor Location Right side drive

Drive Service Factor Direct drive Fan K-factor 1077.00

FEI 1.41

Fan Performance

Airflow 2200. cfm Total Static Pressure 4.274 in H2O

Operating Speed 3334 rpm Max Total Static Pressure @ 10V 6.107 in H2O

Motor Interface Options

Selection Type Motorized impeller control panel Voltage 460/3

Mounting Location External mounting

Motor Data

Voltage 460/3 Impeller Fan Control Voltage 8.4 V

Impeller Fan HP per fan 4.020 hp Fan electrical power (FEP) 1.87 kW Wire to air static efficiency 59.01 %

Note: Certified airflow performance per AHRI 430

Fan Section Options

Door Location Both Door Guard Yes

Fan Discharge Options

Face Type Airflow Face Velocity Area Pressure Drop Exhaust Hood Damper Torque

Requirement

Top Face Feature Sizeable rectangular opening

2200. cfm 1440. ft/min 1.53 sq ft 0.259 in H2O N/A N/A

Note: Certified by the AHRI Central Station Air-Handling Unit (AHU) Certification Program, based on AHRI Standard 430/431. AHRI certified units are subject to rigorous and continuous testing, have performance ratings independently measured and are third party verified. Certified units may be found in the AHRI Directory at www.ahridirectory.org.

CSAA

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Job Name: SJAFB 3650 Dining Hall AHU-2

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Pressure Drop in (in w.g.)

Supply fan

Air mixing section 0.41

Filter section 1.24

Coil section 0.08

Coil section 0.99

Fan section 0.26

Internal Static Pressure 2.97

External Static Pressure 1.30

Total Static Pressure 4.27

CSAA

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Job Name: SJAFB 3650 Dining Hall AHU-2

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CSAA

Quantity: 1 Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

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OPENING AND DIMENSIONS MAY VARY FROM CONTRACT DOCUMENTS / RETURN OF APPROVED DRAWINGS CONSTITUTES ACCEPTANCE OF THESE VARIANCES / NOT TO SCALE Unit size: 4 Job Name: SJAFB 3650 Dining Hall AHU-2 Unit Casing: 2in Double Wall Foam

Performance Climate Changer Air Handlers

Product group: Indoor unit 2200. cfm Proposal Number:

Integral base frame: 2.5in. integral base frame Sales Office: Tags: AHU-2 Paint: 1029.2 lb / 1069.2 lb

Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

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OPENING AND DIMENSIONS MAY VARY FROM CONTRACT DOCUMENTS / RETURN OF APPROVED DRAWINGS CONSTITUTES ACCEPTANCE OF THESE VARIANCES / NOT TO SCALE Unit size: 4 Job Name: SJAFB 3650 Dining Hall AHU-2 Unit Casing: 2in Double Wall Foam

Performance Climate Changer Air Handlers

Product group: Indoor unit 2200. cfm Proposal Number:

Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

2025/03/14 12:34:01 Page 7 of 22 Product Version: 1

OPENING AND DIMENSIONS MAY VARY FROM CONTRACT DOCUMENTS / RETURN OF APPROVED DRAWINGS CONSTITUTES

ACCEPTANCE OF THESE VARIANCES / NOT TO SCALE

Unit size: 4 Job Name: SJAFB 3650 Dining Hall AHU-2

Unit Casing: 2in Double Wall Foam

Performance Climate Changer Air Handlers

Product group: Indoor unit 2200. cfm Proposal Number:

Integral base frame: 2.5in.

integral base frame

Sales Office: Tags: AHU-2

Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

2025/03/14 12:34:01 Page 8 of 22 Product Version: 1

OPENING AND DIMENSIONS MAY VARY FROM CONTRACT DOCUMENTS / RETURN OF APPROVED DRAWINGS CONSTITUTES

ACCEPTANCE OF THESE VARIANCES / NOT TO SCALE

Unit size: 4 Job Name: SJAFB 3650 Dining Hall AHU-2

Unit Casing: 2in Double Wall Foam

Performance Climate Changer Air Handlers

Product group: Indoor unit 2200. cfm Proposal Number:

Integral base frame: 2.5in.

integral base frame

Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

2025/03/14 12:34:01 Page 9 of 22 Product Version: 1

OPENING AND DIMENSIONS MAY VARY FROM CONTRACT DOCUMENTS / RETURN OF APPROVED DRAWINGS CONSTITUTES

ACCEPTANCE OF THESE VARIANCES / NOT TO SCALE

Unit size: 4 Job Name: SJAFB 3650 Dining Hall AHU-2

Unit Casing: 2in Double Wall Foam

Performance Climate Changer Air Handlers

Product group: Indoor unit 2200. cfm Proposal Number:

Integral base frame: 2.5in.

integral base frame

Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

2025/03/14 12:34:01 Page 10 of 22 Product Version: 1

OPENING AND DIMENSIONS MAY VARY FROM CONTRACT DOCUMENTS / RETURN OF APPROVED DRAWINGS CONSTITUTES

ACCEPTANCE OF THESE VARIANCES / NOT TO SCALE

Unit size: 4 Job Name: SJAFB 3650 Dining Hall AHU-2

Unit Casing: 2in Double Wall Foam

Performance Climate Changer Air Handlers

Product group: Indoor unit 2200. cfm Proposal Number:

Integral base frame: 2.5in.

integral base frame

Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

2025/03/14 12:34:01 Page 11 of 22 Product Version: 1

OPENING AND DIMENSIONS MAY VARY FROM CONTRACT DOCUMENTS / RETURN OF APPROVED DRAWINGS CONSTITUTES ACCEPTANCE OF THESE VARIANCES / NOT TO SCALE Unit size: 4 Job Name: SJAFB 3650 Dining Hall AHU-2 Unit Casing: 2in Double Wall Foam

Performance Climate Changer Air Handlers

Product group: Indoor unit 2200. cfm Proposal Number:

Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

2025/03/14 12:34:01 Page 12 of 22 Product Version: 1

OPENING AND DIMENSIONS MAY VARY FROM CONTRACT DOCUMENTS / RETURN OF APPROVED DRAWINGS CONSTITUTES ACCEPTANCE OF THESE VARIANCES / NOT TO SCALE Unit size: 4 Job Name: SJAFB 3650 Dining Hall AHU-2 Unit Casing: 2in Double Wall Foam

Performance Climate Changer Air Handlers

Product group: Indoor unit 2200. cfm Proposal Number:

Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

2025/03/14 12:34:01 Page 13 of 22 Product Version: 1

OPENING AND DIMENSIONS MAY VARY FROM CONTRACT DOCUMENTS / RETURN OF APPROVED DRAWINGS CONSTITUTES ACCEPTANCE OF THESE VARIANCES / NOT TO SCALE Unit size: 4 Job Name: SJAFB 3650 Dining Hall AHU-2 Unit Casing: 2in Double Wall Foam

Performance Climate Changer Air Handlers

Product group: Indoor unit 2200. cfm Proposal Number:

Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

2025/03/14 12:34:01 Page 14 of 22

Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

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Tags: AHU-2

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Tags: AHU-2

Job Name: SJAFB 3650 Dining Hall AHU-2

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Tags: AHU-2

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GENERAL

Per ASHRAE 62.1 recommendation, indoor air handling units will be wrapped to protect unit from in-transit rain and debris.

Installing contractor is responsible for long term storage in accordance with the Installation, Operation, and Maintenance manual (CLCH-SVX07*-EN).

Unit shall be UL and C-UL Listed.

Supply fans within the scope of AHRI Standard 430 are "Certified by the AHRI Central Station Air- Handling Unit (AHU) Certification Program, based on AHRI Standard 430/431. AHRI certified units are subject to rigorous and continuous testing, have performance ratings independently measured and are third-party verified. Certified units may be found in the AHRI Directory at www.ahridirectory.org".

Unit sound performance data shall be reported as sound power. Trane, in providing this program and data, does not certify or warrant NC levels. These levels are affected by factors specific to each application and/or installation and therefore unable to be predicted or certified by Trane. Refer to product data for specific fan footnote references.

Refer to product data for AHRI certification status. Propylene glycol and calcium chloride, or mixtures thereof, are outside the scope of AHRI Standard 410 and, therefore, do not require AHRI rating or certification. For coils within the scope of AHRI Standard 410 cooling coil performance is certified in accordance with the AHRI Forced-Circulation Air-Cooling and Air-Heating Coils Certification Program which is based on AHRI Standard 410 within the Range of Standard Rating Conditions listed in Table 1 of the Standard. Certified units may be found in the AHRI Directory at www.ahridirectory.org. Heating performance for heat pump or condenser mode is not certified.

Unit Construction

All unit panels shall be 2" solid, double-wall construction to facilitate cleaning of unit interior. Unit panels shall be provided with a mid-span, no-through-metal, internal thermal break. Casing thermal performance shall be such that under 55°F supply air temperature and design conditions on the exterior of the unit of 81°F dry bulb and 73°F wet bulb, condensation shall not form on the casing exterior. Casing construction will comply with NFPA 90A.

All exterior and interior indoor AHU panels will be made of galvanized steel.

Unit Paint

Unit to ship unpainted from factory. If required, unit to be painted by 3rd party finisher, or by painting contractor at job site.

Casing Deflection The casing shall not exceed 0.0042 inch deflection per inch of panel span at 1.00 times design static pressure. Maximum design static shall not exceed +8 inches w.g. in all positive pressure sections and -8 inches w.g. in all negative pressure sections.

Floor Construction The unit floor shall be of sufficient strength to support a 300.0 lb load during maintenance activities and shall deflect no more than 0.0042 inch per inch of panel span.

Unit Base Manufacturer to provide a full perimeter integral base frame for either ceiling suspension of units or to support and raise all sections of the unit for proper trapping. Indoor unit base frame will either be bolted construction or welded construction. All outdoor unit base frames shall be welded construction.

For indoor units, refer to schedule for base height and construction type. Contractor will be responsible for providing a housekeeping pad when unit base frame is not of sufficient height to properly trap unit.

Unit base frames not constructed of galvanized steel shall be chemically cleaned and coated with both a rust-inhibiting primer and finished coat of rust-inhibiting enamel. Unit base height to be included in total height required for proper trap height.

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Insulation Panel insulation shall provide a minimum thermal resistance (R) value of 13 ft²-h-ºF/Btu throughout the entire unit. Insulation shall completely fill the panel cavities in all directions so that no voids exist and settling of insulation is prevented.

Drain Pan In sections provided with a drain pan, the drain pan shall be designed in accordance with ASHRAE

62.1. To address indoor air quality (IAQ) the drain pan shall be sloped in two planes promoting positive drainage to eliminate stagnant water conditions. Drain pan shall be insulated, and of double wall construction. The outlet shall be the lowest point on the pan, and shall be of sufficient diameter to preclude drain pan overflow under normally expected operating conditions. All drain pans connections shall have a threaded connection, extending a minimum of 2-1/2" beyond the unit base, and shall be made from the same material as the drain pan. Drain pan located under a cooling coil shall be of sufficient size to collect all condensate produced from the coil.

Refer to Product Data for specific information on which sections are supplied with a drain pan, the drain pan material and connection location.

Access Door Construction Access doors shall be 2" double wall construction. Interior and exterior door panels shall be of the same construction as the interior and exterior wall panels respectively. All doors shall be provided with a thermal break construction of door panel and door frame. Gasketing shall be provided around the full perimeter of the doors to prevent air leakage. Surface mounted handles shall be provided to allow quick access to the interior of the functional section and to prevent through cabinet penetrations that could likely weaken the casing leakage and thermal performance. Handle hardware shall be designed to prevent unintended closure. Outswing doors shall have easily removable hinges and handles that can be relocated to change the door swing if needed. Door hinges shall be made of galvanzed steel.

All doors shall be a minimum of 60" high when sufficient height is available or the maximum height allowed by the unit height.

Door handles shall be provided for each latching point of the door necessary to maintain the specified air leakage integrity of the unit. An optional shatterproof window shall be provided in access doors where indicated on the plans. Window shall either be single pane, or thermal dual pane, as defined on schedule. Window shall be capable of withstanding unit operating pressures and shall be safe for viewing UV-C lamps.

Refer to Product Data for specific information on which sections are supplied with an access door, the door location, a single handle and a window.

Lifting Instructions The air handling units must be rigged, lifted, and installed in strict accordance with the Installation, Operation, and Maintenance manual (CLCH-SVX07G-EN). The units are also to be installed in strict accordance with the specifications. Units may be shipped fully assembled or disassembled to the minimum functional section size in accordance with shipping and job site requirements.

Indoor units shall be shipped on an integral base frame (variable from the standard 2.5" to 8" height) for the purpose of mounting units to a housekeeping pad and providing additional height to properly trap condensate from the unit. The integral base frame may be used for ceiling suspension, external isolation, or as a housekeeping pad. Indoor sizes 3 to 30 will also be shipped with a shipping skid designed for forklift transport. Refer to the unit As-Built or Product Data section of the submittal for the base frame height of each unit.

All units will be shipped with an integral base frame designed with the necessary number of lift points for safe installation. All lifting lugs are to be utilized during lift. The lift points will be designed to accept standard rigging devices and be removable after installation.

MIXING SECTION

A mixing section shall be provided to support the damper assembly for outdoor, return, and/or exhaust air.

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Dampers Dampers shall modulate the volume of outdoor, return, or exhaust air. The dampers shall be of double-skin airfoil design with metal, compressible jamb seals and flexible blade-edge seals on all blades. The blades shall rotate on stainless-steel sleeve bearings. The dampers shall be rated for a maximum leakage rate of 3 cfm/ft² at 1 in. w.g. complying with ASHRAE 90.1 maximum damper leakage. All leakage testing and pressure ratings shall be based on AMCA Standard 500-D. Dampers may be arranged in a parallel or opposed-blade configuration.

Title 24 The following specifications apply only to units with outside air and return air dampers, with actuators.

The 5 year warranty applies only to these items.

This unit contains Economizer that meets or exceeds all mandatory requirements prescribed by Title 24, including but not limited to:

- 5 yr parts only warranty

- Successfully tested to 60,000 Actuations

- Less than 10 cfm/sq.ft. of damper leakage at 1" WG per AMCA 500L

FILTER SECTION

A section shall be provided to support the filter rack as indicated throughout the unit. Refer to Product Data and As-Built sections of the submittal for specific locations within each unit.

Primary Filters

4 inch high efficiency filters constructed with a fine fiber media made into closely spaced pleats shall be provided. The filters shall be capable of operating up to 625 fpm face velocity without loss of filter efficiency and holding capacity. The filter media shall be sealed into a frame assembled in a rigid manner. The manufacturer shall supply a side access filter rack capable of holding 4 inch high efficiency filters.

The 4 inch high efficiency filters shall have a MERV 13 rating when tested in accordance with the ANSI/ASHRAE Standard 52.2.

Prefilter Type

2-inch pleated media filters made with 100% synthetic fibers that are continuously laminated to a supported steel-wire grid with water repellent adhesive shall be provided. Filters shall be capable of operating up to 625 fpm face velocity without loss of filter efficiency and holding capacity. The filters shall have a MERV 8 rating when tested in accordance with the ANSI/ASHRAE Standard 52.2.

COIL SECTION WITH FACTORY INSTALLED COIL

The coil section shall be provided complete with coil and coil holding frame. The coils shall be installed such that headers and return bends are enclosed by unit casings. If two or more cooling coils are stacked in the unit, an intermediate drain pan shall be installed between each coil and be of the same material as the primary drain pan. Like the primary drain pan, the intermediate drain pan shall be designed being of sufficient size to collect all condensation produced from the coil and sloped to promote positive drainage to eliminate stagnant water conditions. The intermediate pan shall begin at the leading face of the water-producing device and be of sufficient length extending downstream to prevent condensate from passing through the air stream of the lower coil. Intermediate drain pan shall include downspouts to direct condensate to the primary drain pan. The outlet shall be located at the lowest point of the pan and shall be sufficient diameter to preclude drain pan overflow under any normally expected operating condition.

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Coil with Inspection The coil section complete with a double-wall, shall include a removable door downstream of the coil for inspection, cleaning, and maintenance. Interior and exterior door panels shall be of the same construction as the interior and exterior wall panels, respectively. All doors shall be provided with a thermal break construction of door panel and door frame.

An easily removable service panel shall be provided in sections as specified, to facilitate access to unit for periodic servicing, or for removal and replacement of coils. Removal of service panel will not impact the structural integrity of the unit.

Hydronic coils shall be supplied with factory installed drain and vent piping to unit casing exterior.

Piping is to facilitate field installation of automatic venting or drain valves on coils, which are not supplied with unit. Refer to the Product Data section of the submittal for the units and/or coils supplied with drain and vent piping.

Water Coils (UP, WP, UW, UU, UA, 3W, 3U, W, 5W, 5A, WD, 5D, D1, D2, P, or TT) The coils shall have aluminum fins and seamless copper tubes. Copper fins may be applied to coils with 5/8-inch tubes. Fins shall have collars drawn, belled, and firmly bonded to tubes by mechanical expansion of the tubes. The coil casing may be galvanized or stainless steel. Refer to the Product Data section of the submittal for the coil casing material.

The coils shall be proof-tested to 300 psig and leak-tested under water to 200 psig. Refer to the Product Data section of the submittals for AHRI certirification status.

Coil connections are constructed of cast iron with female connections, steel block with female connections or steel pipe with male connections. Type P or TT coil connections do not extend out of unit casing. All other water coil types have connections that extend out beyond unit casing. Headers on downstream coil bank of staggered coil sections do not extend beyond the unit casing and must be completed by the on-site piping contractor.

Tubes are 1/2" [13 mm] OD 0.016" [0.406 mm] thick copper.

Tubes are 5/8" [16 mm] OD 0.020" [0.508 mm] thick copper.

ACCESS/INSPECTION / TURNING SECTION

A section shall be provided to allow additional access/inspection of unit components and space for field-installed components as needed. An access door shall be provided for easy access. All access sections shall be complete with a double-wall, removable door downstream for inspection, cleaning, and maintenance. Interior and exterior door panels shall be of the same construction as the interior and exterior wall panels, respectively. All doors shall be provided with a thermal break construction of door panel and door frame.

On units supplied with plenum or motorized impeller fans, door guard(s) shall be supplied on the access door(s) to the fan and those downstream access door(s) where unintended access to the plenum or motorized impeller fan could occur. Door guard is intended to deter unauthorized entry and incidental contact with rotating components. Refer to the Product Data section for fans with access door guard(s).

Motorized Impeller Control Panel

The fan shall be provided with a factory installed NEMA 1 or NEMA 3R motorized impeller motor control panel. The control panel provides a common externally accessible disconnect means, motor over current protection for each fan and a terminal block for ease of control wiring.The box shall include:

1.Individual motor protection with individual disconnnecting means with lockable feature. Fusable motor protection is not permissable.

2.Fused main panel disconnect with lock out tag out capability 3.Common control terminal block for common signal wiring. Single 0-10vdc signal used for fan speed control.

4.Control panel box shall be UL508a compliant and manufactured by a UL508a approved manufacturer or UL certified during air handler installation.

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Fan Details Unit Size 12FM Operating RPM 3,334 rpm Control Signal Voltage

8.4 V Altitude 0.00 ft

Operating Airflow 2,200 cfm Design Temp. 70.00 F Operating Static Pressure

4.274 in H2O Efficiency 59.01 %

Design voltage is less than 10. Ensure the air delivery system can handle being pressurized to the Maximum static pressure detailed in the product data and shown on the fan curve.

Width:

44.0 in

Module Length(in) Weight(lb) Air mixing section #1 34.000 181 Filter section #2 19.000 110 Heating coil #3 10.000 80 Access section #4 19.000 88 Cooling coil #5 48.474 404 Supply fan #6 27.528 206

Height:

58.0 in

Length: 130.6 in

Unit size: 4 Job Name: SJAFB 3650 Dining Hall AHU-2 Unit Casing: 2in Double Wall Foam

Performance Climate Changer Air Handlers

Product group: Indoor unit Actual airflow: 2200. Proposal Number:

Paint: Rigging weight: 1029.1666 / Installed weight: 1069.153

File details come from the government source that posted it. Updated .