Keystone Krown Manual

Krown
Fan Filter Units
v001 – Issue Date: 02/23/22
© 2022 Keystone Clean Air Solutions. All rights reserved.
INSTALLATION + SERVICE MANUAL

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Product Overview
Read and Save These Instructions..................................3
Before You Start...................................................................3
Introduction ..........................................................................4
Installation Instructions
Module Installation..............................................................5
Speed Controller Installation & Operation ......................6
Filter Installation ...............................................................14
Accessories ........................................................................15
Balancing
Balancing ............................................................................21
Balancing Un-Ducted Supply Units ...............................22
Balancing Ducted Supply – Pressure Independent and
Dependent Airflow Control ..............................................23
Balancing Ducted Supply – Pressure Independent and
Dependent Airflow Control ..............................................25
Service Instructions
Pre-Filter Cleaning.............................................................26
Motor Change ....................................................................27
Room Side Accessible Controls .....................................32
Troubleshooting – Changing Motor Programs...........35
Troubleshooting
Troubleshooting Tips........................................................36
Replacement Parts
Filters ...................................................................................37
Motor/Blower .....................................................................37
Control Box Components.................................................38
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Krown Fan Filter Units | Table of Contents

Read and Save These Instructions
Warning! To reduce the risk of re, electrical shock, or injury to persons, observe the following:
A. Installation work and electrical wiring must be done by qualied person(s) in accordance with all applicable codes and
standards, including re-rated construction.
B. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
C. Use this unit only in the manner intended by the manufacturer. If you have any questions, contact the manufacturer:
In the United States
2975 20 Crestridge Drive, Suwanee, GA, 30024
Ph: 470.702.9560
D. Disconnect the unit from the electrical power source before attempting any service. Electrical service should be
performed by a licensed electrician or authorized service technician.
E. When performing any type of maintenance on the Krown Fan Filter Units, be careful to reduce as much as possible
the potential for introducing the internals of the unit to dirt, dust, and debris that may be present in the unit's external
environment.
F. To reduce the risk of injury to persons, install the unit at least 7ft above grade or in ceiling.
Before You Start
Shipping Information
Inspect all cartons and boxes for flaws and shipping damages. If anything is discovered to be damaged, contact the shipping
company and le a freight claim.
Filter Information
Ensure that all HEPA/ULPA lters are stored in a clean, dry location in a vertical position, as labeled on the carton. Do not
open the HEPA/ULPA lters until they are ready to be installed in the Krown Fan Filter Units. All construction in the space
should be complete, the site and upstream air should be clean so as not to unnecessarily load the lter.
Ensure ductwork is balanced to scheduled flow and that both the space and ductwork is clean, free of debris, and ready for
operation prior to installation of lter. To ensure fan lter units are properly balanced, read Technical Note: Design with VAV/
Constant Flow Boxes and Ducted Applications prior to starting installation.
A minimum of two (2) people will be required to install the lters.
NOTE: Extreme caution should be taken to avoid contact with lter media. Touching lter media may result in lter failure.
Damage to lters can occur during installation or during leak qualication testing. The lters supplied by Keystone have
been 100% tested and certied by the manufacturer to be free of defects and leaks. Keystone cannot accept responsibility
for damage that occurs after shipment, whether through transit, handling or installation, and will not replace lters under
Keystone standard warranty.
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Krown Fan Filter Units | Product Overview

Introduction
Krown Fan Filter Units are ceiling module diffusers consisting of a fan/motor assembly and Roomside Removable (RSR),
or Bench Top Replaceable (BTR) lters. The module is designed to provide unidirectional vertical airflow of ltered, clean air
over a cleanroom space.
Krown Fan Filter Units will have four (4) stickers located on the back of the plenum. For ease of troubleshooting assistance,
replacement parts, and general factory assistance, it is recommended that the order number, and model line string be used
as reference. This information can be found on the Factory Label.
ETL label
Factory label
Factory performance label
Eyebolt
Optional pre-lter
Speed controller
Optional duct collar
Motor/blower assembly
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Krown Fan Filter Units | Product Overview

Module Installation
The Krown Fan Filter Units will come completely assembled from the factory with the exception of the HEPA/ULPA lters,
which will ship in its own carton, and the speed controller wall kits (if selected).
Sample line string for Room Side Replaceable lter:
Krown-X-X//I/SUPPLY/24/48//RSR/HEPA/FC/ECM/115/CF/R+TMB/FL+ML+BACnet/BFC/TC/DSW-115//ASSP///WPF/PL-
AL/
F-AL/PL-B12/F-B12
Step 1: Remove fan lter unit from shipping carton and inspect for any damage.
Step 2: If unit is Bench Top Replaceable (BTR) install the lter, refer to the lter installation section of this manual for
instructions. If unit is Room Side Replaceable (RSR), proceed directly to next step.
Sample line string for Bench Top Replaceable lter:
Krown-X-X//I/SUPPLY/24/48//BTR/HEPA/FC/ECM/115/CF/TMB//ECMSC/TC/DSW-115//ASSP///WPF/PL-AL/F-EM/PL-
WM/
F-EM
Step 3: Raise the unit through the ceiling grid at an angle until entire unit is above the grid
Unit Eyebolts for Mounting
Step 5: Secure the unit to the
overhead structure using the
eyebolts located on the back of the
unit.
Step 6: Adjust and level the unit so
that it rests on the tees and there
is adequate compression on the
gasket to warrant a tight seal.
Ensure that ceiling grid is properly
gasket/sealed to prevent inltration
of unltered air from the ceiling
plenum into the room side.
Above steps are manufacturer's
suggested hanging techniques,
always make sure to follow all local
building codes, including seismic
where applicable.
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Krown Fan Filter Units | Installation Instructions

Speed Controller Installation & Operation
Refer to Factory Label to determine which speed controller is on the unit and use the following tableto nd the appropriate
installation instructions.
Sample line string: Krown-X-X//I/SUPPLY/24/48//RSR/HEPA/FC/ECM/115/CF/R+TMB/FL+ML+BACnet/BFC/TC/DSW-
115//ASSP///WPF/PL-AL/F-AL/PL-B12/F-B12
Speed Controller Page Reference
PSCSC/WK 4
ECMSC 5
BFC 8
PSCSC/WK
Sample line string: Krown-X-X//I/SUPPLY/24/48//RSR/HEPA/FC/PSC/115//R+TMB/FL+ML/PSC-WK/TC/DSW-115//
ASSP///WPF/PL-AL/F-AL/PL-B12/F-B12
If unit does not have the wall kit (WK) option, proceed to step 4.
Sample line string: Krown-X-X//I/SUPPLY/24/48//RSR/HEPA/FC/PSC/115//R+TMB/FL+ML/PSCSC/TC/DSW-115/PC-115/
ASSP///WPF/PL-AL/F-AL/PL-B12/F-B12
PSC Speed Controller with Wall Kit Option
Step 1: Locate pre-installed electric
box for wall-mounted speed
controller.
Step 2: Wire speed controller
according to wiring diagram. Wall-
mounted speed controller will be
wired in series with the motor.
Step 3: Attach the wall-mounted
controls faceplate to the electrical
box using the screws provided.
Step 4: Wire the unit according
to appropriate wiring diagram. If
Power Cord (PC) option is selected,
simply insert plug end into
electrical socket.
Sample line string: Krown-X-X//I/
SUPPLY/24/48//RSR/HEPA/FC/
PSC/115//R+TMB/FL+ML/PSCSC/
TC/DSW-115/PC-115/ASSP///
WPF/PL-AL/F-AL/PL-B12/F-B12
Step 5: If the unit has an RSR lter
install the lter now, refer to the
lter installation section of this
manual for instructions.
Step 6: Ensure proper voltage is
hooked up to the unit.
Step 7: Proceed to the balancing
section of this manual.
NOTE: Clockwise rotation will
increase airflow, counter-clockwise
rotation will decrease airflow.
NOTE: If unit is ducted, refer to
Technical Note: Balancing Ducted
Units.
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Krown Fan Filter Units | Installation Instructions

ECMSC
Installation
Sample line string: Krown-X-X//I/SUPPLY/24/48//RSR/HEPA/FC/ECM/115/CF/R+TMB//ECMSC/TC/DSW-115//ASSP///
WPF/PL-AL/F-AL/PL-B12/F-B12
Sample line string: KrownCS-X-X//I/ECM/ECMSC/WMSC-30////
Step 1: Wire the unit according to appropriate wiring diagram. If Power Cord (PC) option is selected, simply insert plug end
into electrical socket.
Potentiometer (POT) Measure (+) VDC
Measure (-) VDC
WMSC-30
ECMSC Speed Controller
Step 2: If ECMSC is to be controlled
using analog voltage signal from
BAS (others) or Price WMSC, please
remove ECMSC from control box.
Connect 0-10VDC & COMMON to
BAS SIGNAL & BAS COMMON on
back of ECMSC (make sure to feed
wires through grommet on control
box). Re-fasten ECMSC to control
box.
Step 3: If the unit has an RSR lter
install the lter now, refer to the
lter installation section of this
manual for instructions.
Step 4: Ensure proper Voltage is
hooked up to the unit.
Step 5: Proceed to the following
page to determine the initial test
point voltage (VDC) based on your
scheduled flow rate.
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Krown Fan Filter Units | Installation Instructions

ECMSC Airflow Setpoint
Step 1: Determine initial test point voltage (VDC) based on scheduled flow rate.
To calculate FPM from a CFM value use the equation for the respective unit style and size from the following table.
Size RSR BTR
2x2 CFM/2.30 CFM/3.31
2x3 CFM/3.82 CFM/5.13
2x4 CFM/5.33 CFM/6.95
Supply - Constant Flow – Forward Curve
Velocity 24x24 24x36 24x48
FPM BTR - FC RSR - FC BTR - FC RSR - FC BTR - FC RSR - FC
45-140 VDC =
(CFM-45) ÷ 97
VDC =
(CFM-33) ÷ 67
VDC =
(CFM-76) ÷ 145
VDC =
(CFM-14) ÷ 127
VDC =
(CFM-88) ÷ 198
VDC =
(CFM-67) ÷ 157
Supply - Constant Torque – Forward Curve
Velocity 24x24 24x36 24x48
FPM BTR - FC RSR - FC BTR - FC RSR - FC BTR - FC RSR - FC
45-95 VDC =
(CFM+174) ÷ 309
VDC =
(CFM+168) ÷ 253
VDC =
(CFM+177) ÷ 322
VDC =
(CFM+142) ÷ 273
VDC =
(CFM+139) ÷ 336
VDC =
(CFM+311) ÷ 373
95-140 VDC =
(CFM+19) ÷ 207
VDC =
(CFM+47) ÷ 174
VDC =
(CFM-70) ÷ 197
VDC =
(CFM-79) ÷ 167
VDC =
(CFM-138) ÷ 212
VDC =
(CFM-81) ÷ 190
Supply - Constant Torque – Backward Curve
Velocity 24x36 24x48
FPM BTR - BC RSR - BC BTR - BC RSR - BC
45-140 VDC = (CFM+240) ÷ 450 VDC = (CFM+332) ÷ 415 VDC = (CFM+185) ÷ 459 VDC = (CFM+403) ÷ 514
Reverse Flow - Constant Flow – Forward Curve
Velocity 24x24 24x48
FPM RSR - FC RSR - FC
45-140 VDC = (CFM-24) ÷ 68 VDC = (CFM-61) ÷ 158
Reverse/Exhaust Flow - Constant Torque – Forward Curve
Velocity 24x24 24x48
FPM RSR - FC RSR - FC
45-95 VDC = (CFM+90) ÷ 197 VDC = (CFM+141) ÷ 308
95-140 VDC = (CFM+90) ÷ 197 VDC = (CFM-90) ÷ 196
Supply, 24 x 48 in., RSR, FC Wheel, Constant Torque @ 450cfm
FPM = CFM/5.33 = 450/5.33
FPM = 84
VDC = (CFM+311)/373 = (450+311)/373
VDC = 2.04V
NOTE: The calculated VDC value is intended as a starting point; actual VDC value may differ slightly depending on eld
variables.
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Krown Fan Filter Units | Installation Instructions

Step 2: If using potentiometer/manual adjustment, rotate the potentiometer (POT/DIAL) dial on the outside of the box with a
screwdriver until the test point voltage is achieved.
NOTE: ECM Speed Controllers have 2 modes: manual adjust and BAS (Building Automation System). Standard manual
control outputs are shown below:
Measurement Tab Voltage Motor Control
0 - 1 VDC Off
1 - 4.5 VDC 0-100%
4.5 - 5 VDC 100%
The speed controller will automatically ignore the potentiometer (POT/DIAL) when a BAS signal is detected (BAS Input Signal
>1).
VDC equations are for potentiometer (POT/DIAL) manual adjustment only (0-1 BAS input signal). The VDC equations are
based on a 1-5 Volt scale. The BAS input voltage is a 2-10 VDC scale, and therefore VDC calculated for a given CFM using
the equation must be doubled to achieve that CFM using the BAS input.
BAS Voltage Response Notes
0 - 1 VDC Local control mode using push buttons Local setpoint can be adjusted from 0 - 100% using push buttons
1 - 2 VDC Motor Off Recommended sending a 1.5 VDC signal to command motor off
2 - 10 VDC Modulating Control 2 - 10 VDC modulates motor in accordance with VDC equations
Example: If using a BAS signal, to calculate appropriate starting voltage, rst calculate the VDC (as shown in above example)
VDC = 2.44 V
Then double this value
BAS Input Voltage = VDC*2
BAS Input Voltage = 2.44*2
BAS Input Voltage = 4.88V
Step 3: Wait a few seconds for the ECM motor to adjust its speed and then verify fan airflow with measurements at the unit face
using a flow hood. Adjust the POT/DIAL, or BAS input signal to reach desired airflow as required.
Step 4: Proceed to balancing section of this manual.
Potentiometer/Dial Adjust
Green Status LED must be blinking.
(Code 1 thru 4)
Speed Controller Adjustment
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Krown Fan Filter Units | Installation Instructions

BACnet Flow Controller (BFC)
Installation
Sample line string: Krown-X-X//I/SUPPLY/24/48//RSR/HEPA/FC/ECM/115/CF/R+TMB/BACnet/BFC/TC/DSW-115//
ASSP///WPF/PL-AL/F-AL/PL-B12/F-B12
Step 1: Wire unit according to appropriate wiring diagram. If Power Cord (PC) option is selected, simply insert plug end into
electrical socket.
NOTE: Polarity is important and must be observed. It is also vital that the 24 VAC common side of the transformer be Earth
grounded.
Step 2: Hook up applicable BACnet, and/or local Building Automation System (BAS) according to wiring diagram. Multiple
units can be daisy chained together using optional RJ45 cables. If using BAS or Local Set point, reference the airflow
setpoint section on the next page.
Daisy Chained Krown Fan Filter Units
Step 3: Wire the unit according to the appropriate wiring diagram. If power cord option is selected, simply insert the plug end
into the electric socket.
Sample line string: Krown-X-X//I/SUPPLY/24/48//RSR/HEPA/FC/ECM/115/CF/R+TMB/BACnet/BFC/TC/DSW-115/PC-115/
ASSP///WPF/PL-AL/F-AL/PL-B12/F-B12
Step 4: If the unit has an RSR lter install the lter now, refer to the lter installation section of this manual for instructions.
Step 5: Ensure proper Voltage is hooked up to the unit.
For additional information on BACnet, and the BFC controller, refer to the BACnet Wiring Guidelines, and BFC Manual
available on KeystoneCleanAir.com
BACnet MS/TP to
BACnet IP Router
Krown 1 Krown 2 Krown 3
Krown 30 Krown 4
Network
Connection
IP Router
Webserver Interface
FFU 1
CFM- 312
FIlterHours - 1280
FilterStatus - Clean
ANTEROOM
FFU 2
CFM- 310
FIlterHours - 1125
FilterStatus - Clean
FFU 3
CFM- 312
FIlterHours - 1225
FilterStatus - Replace
FFU 4
CFM- 310
FIlterHours - 1300
FilterStatus - Clean
FFU 5
CFM- 312
FIlterHours - 1430
FilterStatus - Clean
FFU 6
CFM- 315
FIlterHours - 1400
FilterStatus - Replace
FFU 7
CFM- 312
FIlterHours - 1350
FilterStatus - Clean
Webserver
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Krown Fan Filter Units | Installation Instructions