Model Number: KLPS
Series Low Profile Fan Powered VAV Terminal Unit
Guide Specifications:
CFM Range: 90 to 1970 Nominal CFM

Part 1 – General
1.01	System Description: 
Fan powered terminal unit shall be completely factory assembled and wired, with blower, blower motor, mixing plenum and primary air damper contained in a single unit housing. Primary airflow controller shall compensate for central system pressure fluctuations. When room temperature requires maximum heating, the Direct Digital pressure independent velocity controller shall maintain the minimum primary airflow setting by modulating the damper. The induction fan shall run and the staged electric heating coil (HOT WATER COIL), if supplied, shall be energized (ACTIVATED). As room temperature begins to rise, the heating coil shall be deenergized (DEACTIVATED). As room temperature calls for cooling, the velocity controller shall maintain the cooling primary airflow setting. To prevent the fan/motor from running in the backward direction, the unit induced air fan shall be field wired so that it is electrically or pneumatically interlocked with the central system fan.

1.02	 Quality Assurance:  
A.	Insulation shall meet NFPA 90A requirements for flame spread and smoke generation and UL-181 requirements for anti-erosion, corrosion and fungus properties.
B.	Cooling water coil and hot water coils, when specified, shall be tested for leakage at 350 psig with the coil submerged in water
C.	Electric heating coils, when specified shall be UL or ETL listed and designed to comply with UL Standard 1995.
D.	The terminal unit shall be ETL listed as a complete assembly. All electrical components shall be UL listed and installed in accordance with the National Electric Code. All electrical components shall be mounted in sheet metal control enclosures. Electrical connections shall be single point.
E.	Sound power levels shall be AHRI certified in accordance with the requirements of AHRI 880-08.

1.03	DELIVERY AND STORAGE:
Units shall be stored and handled per manufacturer’s recommendations.

Part 2 – Products

2.01 Equipment

A.	General:   Factory assembled, externally powered, horizontal fan powered terminal unit with blower, blower motor, mixing plenum and primary air damper contained in a single unit housing. Unit shall be complete with a damper assembly, flow sensor, externally mounted volume controller, collars for duct connection and all required features. Control box shall be clearly marked with an identification label that lists such information as nominal cfm, maximum and minimum airflow limits, coil type and coil hand, where applicable

B.	Unit Cabinet:
1.	Constructed of 20 gage galvanized steel with round inlet collar and rectangular discharge with flanged connection. All round primary air inlet collars shall accommodate standard flex duct sizes

2.	Insulated with 1/2 in. thick, dual density.  4.0 lb. density mat face with 1.5-lb. equivalent density insulation that meets the requirements of UL181 and NFPA 90A.

3.	FOIL ENCAPSULATED INSULATION: ALTERNATIVE TO ITEM 2) Unit casing shall be lined with nylon reinforced foil-wrapped exposed edges 1/2 ” thick, 1.5 lb. density fiberglass insulation that meets UL 181and NFPA 90A.

4.	CELLULAR INSULATION (ALTERNATIVE TO ITEM 2) Unit casing shall be lined with 1/2” thick, smooth surface, closed-cell elastomeric thermal insulation for fiber free application and affixed with mechanical fasteners. 

C.	Damper Assembly: 
The control air damper assembly shall be constructed of heavy gauge galvanized steel with solid shaft rotating in Delrin® bearings. Damper shaft shall be marked on the end to indicate damper position. Damper blade shall incorporate a flexible gasket for tight airflow shutoff and operate over a full 90°.

D.	Fan(s):
1.	PSC MOTOR: Fan shall be of the forward curve, centrifugal type. The fan motor shall be single speed, multi-voltage (120, 208/240, 277), 60 cycle, single phase, energy efficient design, permanently lubricated, using permanent split capacitor for starting and be specifically designed for use with an SCR fan speed-controller. Motor must have thermal overload protection. The fan motor shaft shall be connected directly to the fan and the entire fan assembly shall be isolated from the unit casing to prevent transmission of vibration.  The fan assembly shall be attached to the unit utilizing lance/tab construction for ease of removal.

2.	ECM MOTOR (ALTERNATIVE TO ITEM 2): Fan shall be of the forward curve, centrifugal type. The fan motor shall be [120, 208/240, or 277 Volt, single-phase] ECM (electronically commutated motor) including either a (VCU), (ACU) speed controller. The VCU fan speed control is manually field set and is field adjustable with digital display alternating between RPM and percentage full flow. The ACU speed controller communicates with a DDC controller to provide a means to remotely set and/or adjust the fan 	speed. ACU fan speed controller must provide a manual override option to set the fan. The fan motor shaft shall be connected directly to the fan and the entire fan assembly shall be isolated from the unit casing to prevent transmission of vibration.  The fan assembly shall be attached to the unit utilizing lance/tab construction for ease of removal.

E.	Electrical Requirements:
Units shall have a single connection for power, and operate on 120, 208/240 or 277 Volt (standard) single phase, 60 Hz power as shown on the equipment schedule. Units with three-phase electric heat shall be factory wired for single point performance (including 208/240v 3-wire or 480v 4-wire). When specified and coordinated, units shall be wired and shipped with proportionally connected phasing.

F.	Controls:
Units shall have pressure-independent pneumatic, electronic, or communicating controls, as specified, capable of maintaining required airflow set points +/-5% of the unit’s capacity at any inlet pressure up to 6-in. w.g. The controllers shall be capable of resetting between factory or field-set maximum and minimum (>350 fpm inlet duct velocity) set points to satisfy the room thermostat demand.

The unit shall be equipped with an amplified flow probe located in the unit inlet. Air flow for the pressure independent controller (supplied by others) shall be determined with a factory supplied 12 point total pressure, center averaging cross flow sensor, having a magnification resulting in no greater than 2625 fpm @ 1” developed signal.

G.	Accessories:
1.	Hot Water Heating Coil:
Coil shall be mounted in a minimum 20 Ga. Galvanized steel casing with flanged connections, and factory mounted on the base unit as shown on the equipment drawings. Coil performance data shall be based on tests run in accordance with AHRI Standard 410.  Coils shall have:
a.	Aluminum fins (10 ft/in.) bonded to the copper tubes by mechanical expansion. 
b.	Number of coil rows and circuits shall be selected to provide performance as required by the plans.
c.	Up to 2 rows as shown on equipment drawings or designed on the equipment schedule. Right or left-hand fittings with sweat connection sizes as indicated on equipment drawings. 

2.	Electric Heating Coil:
The terminal unit manufacturer shall supply electric coils and they shall be UL listed. Construct coil casing with minimum of 20-gage zinc coated steel. Elements shall be nickel chrome and supported by ceramic isolators. The integral control panel shall be housed in a NEMA 1 enclosure, with hinged access door for access to all controls and safety devices when an optional door interlocking disconnect is provided. Electric coils shall contain a primary automatic reset thermal cutout and differential pressure airflow switch for proof of airflow.  Heaters shall be: 
a.	Designed for the capacity, electrical characteristics and steps of control as shown on the equipment schedule
b.	Open coil construction with 80% nickel, 20% chromium wire supported in free-floating ceramic bushings. Coil frame shall be constructed of corrosion resistant steel.
c.	Factory wired and include all limit switches

(OPTIONAL) Electric coils shall include fused or non-fused door interlocking disconnect switch, AC Solid State Relays, fuse block, dust tight enclosure construction, all mounted and/or wired within the control enclosure. 

(OPTIONAL) LineaHeat solid state electronic proportional control of electric heat with optional discharge temperature sensor shall meet the requirements of ASHRAE Standard 62, Addenda N.  

H.	Performance:

1.	The pressure drop through the units shall not exceed scheduled values, including hot water coils. 

2.	Acoustical Requirement

2.1	Unit supplied shall be rated in accordance with AHRI 880 certification program at the rated flow rates and pressures. The unit manufacturer shall furnish octave band sound power data for both casing radiated and discharge sound levels with the selected lining and above flow sensor, as tested per AHRI Industry Standard 880-08, at the required flow rates and inlet pressures.  Both Discharge and Radiated sound data shall result in room Sound Pressure levels not to exceed those listed below, with a tolerance of + 2 dB in any band for less than 20% of the units, when determined in accordance with AHRI 885-08 Appendix E with the following listed assumptions:
2.2	Desired Room Sound Pressure level, dB by Octave Band:
Sound Criteria 		: High Speech Privacy
Octave Band 		:      2     3     4     5    6    7 
          Room Sound Pressure 	:    57   53   48   43   37   31

2.3	Application Assumptions
Nominal Duct Size = 12.        Nominal Duct Ps = 1.0.

 ----- Discharge Sound Assumptions ------ 
  Sound Power Division based on 2 Power Splits
  5 Ft. of Lined Duct
  5 feet of 8" Flexible duct   
  End Reflection based on a 10" round duct.

Room Absorption based on a 2400 CuFt room, 5 Ft from the source:              
             Octave Band    	:    2    3    4    5    6    7   
     Room Effect, dB       	:    5    7    8    9   10   11

 ------ Radiated Sound Assumptions --------
AHRI 885-08 assumes that ceiling located sound sources are not point, but area sources, and the room attenuation is included in the ceiling/space effect, based on the ceiling tile selected.

    Ceiling: AHRI 885-08 Type 2, 10 pcf Mineral Tile
              Octave Band   	:    2      3     4     5     6     7                       
      Total Space Effect   	:   15   17   19   25   30   33

2.4	Maximum Allowable Sound Power 
Based on the assumptions in section 2.3 above, neither Radiated nor Discharge Unit sound power shall exceed the following levels at an inlet pressure of 1.0" w.g.:         

            Octave Band       :    2      3     4     5     6    7    
       Radiated Pwl    ,dB   :   69   65   63   59   56   47
       Discharge Pwl   ,dB  :    76  73   71   69   67   65