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TRANSCRIPT
MANUAL – INSTALLATION + SERVICE
Underfloor Fan Powered Terminals
v100 – Issue Date: 11/22/16© 2016 Price Industries Limited. All rights reserved.
Underfloor fan Powered TerminalsTABLE OF CONTENTS
Product Overview
Introduction ...................................................................1
General Safety Guidelines..............................................1
Safety Symbols .............................................................1
Underfloor Systems Control Zones ................................2
Fan Terminals ................................................................4
Installation Instructions
Fan Terminal Installation Instructions ..............................5
Fan Terminal Duct Connection .......................................5
Fan Terminal Electrical Connection ................................5
Fan Terminal Control Connections .................................6
Fan Terminal Maintenance .............................................6
Fan Terminal Filter(s) ......................................................6
Fan Terminal Air Balancing Procedure............................6
ECM Standard Speed Controller Adjustment .................7
ECM Deluxe Speed Controller Adjustment ...................7
ECM Motor Equation List ..............................................7
BAS Input Signal ...........................................................8
Fan Terminal Operating Guidelines ................................8
Performance Curves - Standard ECM Motor
FDBU Series .................................................................9
ECM Motor Overview
ECM Motor Background .............................................11
ECM Motor Power and Control Connectors ................12
ECM Troubleshooting
ECM Motor Troubleshooting Checklist .........................13
ECM Standard Speed Controller
ECM Standard Speed Controller .................................14
Manual Mode ..............................................................14
ECM Setup
LED Blink Sequence Chart ..........................................15
Standard Speed Controller Hardware Specifications....15
ECM Deluxe Speed Controller
BAS Input Signal .........................................................16
LCD Display ................................................................16
Analog RPM Feedback................................................17
ECM Deluxe Speed Controller Hardware Specs ..........17
Wiring and Cables .......................................................18
Typical Wiring Diagram
Wiring Diagram ...........................................................20
Parts List
Parts List .....................................................................21
1priceindustries.com | UnderfLoor fAn Powered TermInALs - manual
Underfloor fan Powered TerminalsPRODUCT OVERVIEW
introductionIn this manual, you will find technical descriptions and diagrams of underfloor system components along with their installation instructions. Practical guidelines and recommendations are also provided. If more information is required about this equipment, please contact an Price sales representative.
General safety GuidelinesThis document is intended for use by owner-authorized operating/service personnel who are expected to possess the required training to enable them to perform their tasks properly and safely. This individual must have read and understood this document and any referenced materials prior to performing any task on this equipment. Also, it is essential that this individual be familiar with and comply with all applicable governmental standards and regulations pertaining to the task in question. This individual must also verify that installation and connections comply with local building codes. It is the obligation and responsibility of the operating/service personnel to identify and recognize these inherent hazards, protect themselves, and proceed safely in completing their tasks. Failure to comply with any of these requirements could result in severe personal injury or death to themselves and people at the site, as well as serious damage to the equipment and the property in which it is situated.
The equipment discussed in this manual is relatively complicated apparatus and must be handled with the necessary precautions. Individuals may be exposed to certain components or conditions such as refrigerants, oils, materials under pressure, rotating components, and both high and low voltage during installation, operation, maintenance or service of this equipment. If misued or mishandled, each item has the potential to cause bodily injury or death.
safety symbolsThe following symbols are used in this document to alert the reader to areas of potential hazard:
noTe: Used to highlight additional information helpful to the reader.
CAUTION failure to observe may result in equipment damage.
WARNING failure to observe may result in personal injury, death or equipment damage.
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Underfloor fan Powered TerminalsProduct overview
Underfloor systems Control ZonesDue to the extensive line of products available from Price, the underfloor air distribution system can be designed in many configurations to satisfy a floor in each space. The cooling or heating requirement may be divided into six typical zones, four exterior or perimeter zones, at least one interior zone, and special zones such as conference rooms.
The two main methods of supplying air to an underfloor ventilation system are to use a pressurized plenum or to duct the supply air to each of the air outlets.
PERIMETER / SPECIAL ZONES
Ducted Supply
This system utilizes a Fan Booster unit, equipped with an ECM motor, ducted to remote terminal units. Airflow from the Fan unit is controlled by the UMCB between pre-programmed maximum and minimum set points. In this mode, the ECM motor is programmed with a constant volume program therefore changes in static pressure will not cause changes in airflow and this results in pressure independent control.
The UMCB controls the ECM motor to modulate the airflow from min flow set point when the cooling load is 0% and max flow set point when the cooling load is 100%.
The local supply air temperature is monitored by the Price temperature sensor allowing for adjustment in airflow according to the supply air temperature. Should the slab warm up during the day therefore affecting the plenum air respectively, control of the cooling zones can be more responsive than waiting for a typical controller to compensate.
dUCTed sUPPlY
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Underfloor fan Powered TerminalsPRODUCT OVERVIEW
reCirCUlaTinG sYsTem
PressUriZed ParTiTioned PlenUm Pressurized Partitioned Plenum
The Fan control system in this method works in a similar manner as the Ducted System mentioned above however, ductwork is omitted and an entire zone is partitioned instead. The UMCB would control the FDBU to increase or decrease airflow according to the cooling demand. Use of the Booster unit allows for independent pressure control of the partitioned plenum from the open plenum. The FDBU would pull air from the pressurized plenum (pressurized by the AHU) and discharge air into the partitioned plenum thereby forcing more air through the floor diffusers. A typical candidate of an isolated zone is a meeting or conference room due to increased cooling demands or intermittent loads. The Fan Booster unit is equipped with a back draft damper, ensuring reduction of airflow or shut down capabilities when the zone is occupied.
Recirculating System
This system entails supplying heated air to the perimeter zone by mixing room and plenum air. The fan terminal unit is ducted to the heating side of the LFG-HC while the inlet of the Fan terminal is ducted to the RFB-HC. A call for heating along the perimeter will close both the LFGs and RFBs to the plenum and open to the terminal unit. Air is drawn from the room through the RFBs and supplied to the perimeter area through the LFGs. Upon increase in room temperature above the set point, the Fan Terminal unit will shut and the dampers on the LFGs and RFBs open to the pressurized plenum thus supplying cool air into the occupied space.
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Underfloor fan Powered TerminalsProduct overview
fan TerminalsAn optional metal control cover may be provided to protect the terminal unit control components. The protective cover is removable with two sheet metal screws.
CAUTION CaUTion To ConTraCTors
1. fan Powered Terminal Units are not intended for use as temporary heat or ventilation sources during building construction. The terminal units are not designed nor equipped to operate in a dusty construction environment. recirculating fan wheels can become coated in construction dust, resulting in an unbalanced wheel. This in turn can contribute to reduced motor life. Inlet air filters, if supplied, would provide little protection as they would quickly become plugged with construction dust.
2. A fan Powered Terminal Unit should never be operated if the downstream duct work has not been installed. A minimum of 0.10 inches w.G. downstream static pressure resistance is required for safe operation of the recirculating fan motor.
noTe: operating in unauthorized conditions, as outlined above, will void the Price warranty.
Receiving Inspection
All Price Fan Powered Terminal Units are inspected before shipment. After unpacking the assembly, check it for damage. If any damage to the products is found, report it immediately to the delivery carrier. During unpacking and installation, do not handle the unit by the inlet velocity sensor. Caution is required when unpacking the fan powered units with electric coils so as not to damage the elements.
Ensure that all packing material is removed from the inside of the unit, especially around the blower wheel and coil section.
WARNING do not adjust the control components.
fdBU series
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Underfloor fan Powered TerminalsINSTALLATION INSTRUCTIONS
fdBU series fan Terminal installation instructionsMounting The Unit
1. Price Fan Powered Terminal Units are designed to be mounted in the direction indicated by the Control Assembly Label found on the protective shroud.
2. Mount the unit directly on the sub-floor, beneath the raised floor. Ensure the area where the unit is to go is clear of cables, wires, etc.
3. Position the unit so that there is no interference with the raised floor support members.
4. Install the unit in a location that allows free access to the unit as well as all control components.
5. Ensure main power to the terminal and electrical coil has been disconnected prior to performing any electrical work or inspection of the circuitry.
WARNING do not tamper with control components.
fan Terminal duct Connection1. To prevent excessive air leakage, all cleat joints should be
sealed with an approved duct sealer. This applies to all accessory connections as well as the basic Fan Powered Terminal Unit.
2. Holes that are drilled in the duct for testing or balancing purposes are to be sealed with duct tape or duct sealer.
3. A minimum of 0.10 inches W.G. downstream static pressure is required to prevent overheating of the fan motor.
fan Terminal electrical Connection1. All field wiring is to be in accordance with the National
Electrical Code ANSI/NFPA No. 70 or the Canadian Electrical Code , Part 1, CSA Standard C 22.1 and local codes and standards.
2. Refer to the product identification label on each unit for information to determine the field wire size.
CAUTION CaUTion To ConTraCTors
Check voltage requirements prior to power supply connection. Refer to the electrical label located near the electrical control box and also refer to the schematic drawing provided on the underside of the electrical control box cover.
3. If upon energizing the electric motor(s), excessive noise is apparent, shut down the unit. Determine the cause by checking for packing materials, etc. and re-energize after corrective action has been taken.
4. If an Electric Reheat Coil has been supplied, refer to the electrical schematic which is permanently affixed to the topside of the electrical control cabinet cover, prior to hook-up.
CAUTION CaUTion To ConTraCTors
Check the voltage requirements to ensure proper voltage supply is used.
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Underfloor fan Powered TerminalsINSTALLATION INSTRUCTIONS
fan Terminal Control ConnectionsDigital
If controls have been factory mounted, a wiring diagram will be included with the unit indicating the factory mounted components. For field wiring of room sensors and other accessories, refer to the Controls Contractor’s documentation for all wiring information.
fan Terminal maintenance1. Disconnect all incoming power before servicing the unit.
2. Price Fan Powered Terminal Units are supplied with permanently lubricated motors.
3. The blower and motor should be inspected annually for accumulation of dust and dirt. Clean as necessary.
4. To access blower and motor for servicing, remove the top access panel.
5. Motors are provided with thermal overload protection. If the motor overheats and trips the thermal overload, it will automatically reset after cooling down to a proper operating temperature.
6. If field amperage draw readings of the fan motor are required, measurements should be taken with a true RMS meter. Non-true RMS meters will not provide accurate reading due to alteration of the sine wave by the fan speed control. Refer to Page 7 for maximum motor operating amps.
fan Terminal filter(s)1. Filters, if supplied, should be replaced or removed after
system start-up.
2. If filters are used beyond system start-up, they should be changed regularly to avoid excessive restriction of air flow. Frequency would depend on environment.
3. Contact your Price representative for details on replacement filter media
fan Terminal air Balancing ProcedurePrior to air balancing of the terminal unit, the following general items should be verified:
1. Return filters (if supplied) are clean.
2. All balancing dampers are adjusted and locked. Dampers downstream of the terminal unit should be proportionally balanced.
3. Thermostats are calibrated and operational.
4. All duct work and connections are free from leaks.
5. All diffusers are installed.
6. Downstream duct static pressure is a minimum 0.1 in.w.g.
7. FDBU flow adjustment. A. Adjust fan air flow with the fan speed controller per the
fan curves.
8. The fan volume must be field adjusted with the fan speed controller. Fan curves found in this manual indicate the volume range of each size unit. Adjust the speed control until the desired air flow is measured at the outlets.
noTe: Since fan powered terminals are typically operating within a pressurized plenum, all flooring tiles must be replaced prior to verifying outlet flows.
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Underfloor fan Powered TerminalsiNStALLAtioN iNStructioNS
eCm standard speed Controller adjustment1. Remove the electrical control cover and connect the leads
from a DC voltmeter to the terminals indicated.
2. Determine test point voltage from the formula based on the desired air flow. Formulas found in table below, along with examples on how to use the formulas.
3. Adjust the manual speed control dial on the outside of the box with a screwdriver until the test point voltage is achieved.
4. Wait a few seconds for the ECM motor to adjust its speed and then verify fan flow with measurements at the supply outlets.
5. If necessary, fine tune the speed control in accordance with the measured outlet flow.
eCm deluxe speed Controller adjustment The Price Deluxe ECM speed controller works with a high efficiency ECM motor. This low voltage (24 VAC) speed control allows full manual (push button adjust) or BAS (2-10 VDC signal) control of the ECM motor. The deluxe speed controller also has a digital screen and BAS RPM feedback (2-10 VDC) which is proportional to motor RPM.
noTe: 24 VAC COM, BAS COM, ANALOG OUTPUT COM are all connected together. Please observe 24 VAC polarity
noTe: Local setpoints are stored to EEPROM and will remain set after power failures.
Local control:
To change modes press both up and down buttons at the same time until L.SET appears on display
Use up and down to adjust fan speed.
BAS control:
To change modes press both up and down buttons at the same time until bAS.r appears on display
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. See standard speed controller BAS section for an example of calculating the voltage required for a specific CFM. Example found in the BAS Input Signal section below.
wirinG diaGram
eCm motor equation list FDBU Series
Size Motor Volts Equation
10, 20 No Constant Flow Program, Flow set in the field
30 115 CFM = (512.15 x VDC) - 759.92
30 277 CFM = (548.2 x VDC) - 754.39
40 115 CFM = 476.2 x (VDC - 0.9989)
40 277 CFM = 454.5 x (VDC - 0.8638)
50 115 CFM = (579.71 x VDC) - 679.9
50 277 CFM = (702 x VDC) - 1037
60 115 CFM = (840.36 x VDC) - 789.74
60 240 CFM = (831.09 x VDC) - 721.19
60 277 CFM = (827 x VDC) - 888.59
A size 50 FDBU terminal unit with 277 volt ECM equation is as follows: CFM = 702 (VDC) – 1037
So, in order to get 1400 CFM, we would need to rearrange the equation to get: (CFM+1037) / 702 = VDC
The POT would have to be turned up until the voltage measured at the taps is 3.47 VDC
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Underfloor fan Powered TerminalsINSTALLATION INSTRUCTIONS
fan Terminal operating Guidelines1. Minimum downstream duct static pressure of 0.1 inches
W.G. must be maintained to prevent overheating of the fan motor. Overheating of the fan motor can cause the unit to trip the thermal overload and reduce motor life.
2. If electric duct heaters are supplied, 63 CFM/kW minimum air flows across the heater must be maintained.
3. If electric duct heaters are supplied, the discharge air temperature must not exceed 120°F.
4. Motor running amperage must not exceed the values listed in the table below
FDBU Full Load Amps
Size 115V 277V
20 3.0 1.1
30 4.8 1.8
40 7.4 2.5
50 7.5 3.0
Bas input signal In Building Automation Mode the speed controller reads a 2-10 VDC signal from a controller/computer to adjust the motor speed.
noTe: Speed Controller will automatically ignore the POT/DIAL when a BAS signal is detected!
The 2-10 VDC signal is connected to the BAS Signal and BAS Common tabs. (noTe: A 4-20 mA signal can be used as well. (series/current signal) However a jumper on the board must be relocated. Default is voltage input signal.)
BAS Input Signal Motor
0 - 1 VDC Manual Mode (responds to POT/DIAL)
1 - 2 VDC Off (Recommended to use 1.5 VDC for fan off)
2 - 9 VDC 0-100% Control
9-10 VDC 100%
For BAS control, the same volts vs. CFM equations apply, but since the POT operates on a 1-5 volt scale, and the BAS operates on a 2-10 volt scale, the BAS scale is double the POT scale. Therefore whatever voltage is calculated for a specific CFM using the equations, the voltage must be doubled in order to get that CFM by sending a BAS signal.
For example:
Size 50 FDBU with 277 volt ECM whose volts vs. CFM equation is:
CFM = 702 (VDC) – 1037
If the fan powered terminal requires a fan flow controlled by the BAS of 2000 CFM, rearranging the equation we get:
(CFM+1037) / 702 = VDC
The VDC is for the POT however, so to get a CFM using the BAS input, the left side of the equation would need to be multiplied by 2. Now we get:
((CFM+1037) / 702) * 2 = VDC
Therefore, 2000 CFM would require a BAS voltage of 8.65 VDC.
Measure (+) VDC
Measure (-) VDC
Range is 0-5 VDC
eCm sPeed ConTroller (manUal seTTinG)
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Underfloor fan Powered Terminals
fdBU series
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000
Constant Airflow
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000 0 1000 1500 2000 2500
Constant Airflow Constant Airflow
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000
Constant Airflow
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000 0 1000 1500 2000 2500
Constant Airflow Constant Airflow
Unit Size 10* Unit Size 20* - No Coil, 1 and 2 Row Coil
Unit Size 30 - No Coil Unit Size 30 - 1 Row Coil
Unit Size 30 - 2 Row Coil Unit Size 40 - No Coil
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000
Constant Airflow
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000 0 1000 1500 2000 2500
Constant Airflow Constant Airflow
*noTe: Unit size 20 can not be programmed for factory set fan flow. The fan air volume will vary as the external static pressure varies in accordance with the fan curves illustrated. All other features and benefits of the ECM motor apply to the size 20 unit.
noTe: Data obtained in accordance with ARI Standard 880-98.
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000
CAUTION CaUTion To ConTraCTors
Fan powered terminal units are not intended for use as temporary heat or ventilation during building construction. The terminal units are not designed nor equipped to operate in a dusty construction environment. Recirculating fan wheels can become coated with construction dust, resulting in an unbalanced wheel. This in turn can contribute to reduced motor life. Inlet air filters would provide little protection as they would quickly become plugged with construction dust.
A fan powered terminal unit should never be operated if the downstream ductwork has not been installed. A minimum of 0.10 inches W.G. downstream static pressure resistance is required for safe operation of the recirculating fan motor.
noTe: Price cannot warrant against unauthorized operation under conditions as outlined on this page.
PerForMANce curveS - StANdArd ecM Motor
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Underfloor fan Powered Terminals
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000
Constant Airflow
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000 0 1000 1500 2000 2500
Constant Airflow Constant Airflow
Air Flow, cfm [L/s]
50[472]
100[472]
150[472]
200[472]
250[472]
300[472]
350[472]
400[472]
450[472]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
100[47]
200[94]
300[142]
400[189]
500[236]
600[283]
700[330]
800[378]
900[425]
1000[472]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
2000[944]
2200[1038]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
2000[944]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
1000[472]
1500[707]
2000[944]
2500[1180]
3000[1416]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
2000[944]
2200[1038]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
1000[472]
1500[707]
2000[944]
2500[1180]
3000[1416]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
1000[472]
1500[707]
2000[944]
2500[1180]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
50[472]
100[472]
150[472]
200[472]
250[472]
300[472]
350[472]
400[472]
450[472]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
100[47]
200[94]
300[142]
400[189]
500[236]
600[283]
700[330]
800[378]
900[425]
1000[472]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
2000[944]
2200[1038]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
2000[944]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
1000[472]
1500[707]
2000[944]
2500[1180]
3000[1416]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
200[94]
400[189]
600[283]
800[378]
1000[472]
1200[566]
1400[661]
1600[755]
1800[850]
2000[944]
2200[1038]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
1000[472]
1500[707]
2000[944]
2500[1180]
3000[1416]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
Air Flow, cfm [L/s]
1000[472]
1500[707]
2000[944]
2500[1180]
Stat
ic P
ress
ure,
in.w
.g. [
Pa]
0.1 [25]
0.2 [50]
0.3 [75]
0.4 [100]
0.5 [125]
0.6 [150]
0.7 [175]
noTe: Data obtained in accordance with ARI Standard 880-98.
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000
Constant Airflow
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1000 1500 2000 2500 3000 0 1000 1500 2000 2500
Constant Airflow Constant Airflow
Unit Size 40 - 1 Row Coil Unit Size 40 - 2 Row Coil
Unit Size 50 - No Coil
Unit Size 50 - 2 Row Coil
Unit Size 60 - 1 Row Coil
Unit Size 50 - 1 Row Coil
Unit Size 60 - No Coil
Unit Size 60 - 2 Row Coil
CAUTION CaUTion To ConTraCTors
Fan powered terminal units are not intended for use as temporary heat or ventilation during building construction. The terminal units are not designed nor equipped to operate in a dusty construction environment. Recirculating fan wheels can become coated with construction dust, resulting in an unbalanced wheel. This in turn can contribute to reduced motor life. Inlet air filters would provide little protection as they would quickly become plugged with construction dust.
A fan powered terminal unit should never be operated if the downstream ductwork has not been installed. A minimum of 0.10 inches W.G. downstream static pressure resistance is required for safe operation of the recirculating fan motor.
noTe: Price cannot warrant against unauthorized operation under conditions as outlined on this page.
PerForMANce curveS - StANdArd ecM Motor
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Underfloor fan Powered Terminals
eCm motor BackgroundThe ECM, or Electronically Commutated Motor, is a "smart" motor. Meaning it can be programmed to react to specific conditions.
The ECM is electronically adjustable with an analog signal sent to the speed controller, or in some cases automatically adjusts itself to conditions. The ECM motor uses a quieter soft start when compared to standard AC motors and has much lower power consumption. The design is a combination of a very efficient brushless DC motor, an integrated electronic control and extensive knowledge of the customer's application, which is captured in the control's programming.
Price is currently using the Genteq EON motor in 1/2 HP, 3/4 HP and 1 HP sizes. Voltages for the motors are 120/240/277 VAC single phase AC.
While this motor is more complicated than a standard AC fan motor there are many benefits. This manual will show you how to setup, program and troubleshoot ECM motors.
There are two types of programs Price can load on to an ECM; Constant Volume, which is Price’s default, or Constant Torque for special situations (contact application engineering).
Constant Volume:
This programming strategy has the motor speed up or slowdown in terms of RPM to compensate for changes in system pressure in order to deliver a constant airflow. For instance, on a fan powered terminal equipped with a MERV 13 filter, as the filter begins loading up with dust, the pressure drop increases, and the ECM will speed itself up to maintain the airflow it is set for within 5%. As the primary air valve opens and less and less air is being pulled through the filter, and more air is coming down the valve, the motor slows down to compensate for less pressure drop to deliver the same airflow, within 5%. The ECM does this by measuring its own torque and RPM in real time and uses the application specific program created in Price’s lab to either speed up or slow down with any changes to either. Essentially as RPM begins to drop due to increases in system pressure, torque increases to bring the RPM up, and vice versa. This transition happens seamlessly as the motor is running.
Constant Torque:
There are instances where a constant airflow program is not desirable, and it would be preferential to have a motor that reacts to changes in system pressure by riding the fan curve as a ‘dumb’ AC motor would. This is the constant torque program, where torque is held constant and RPM (and airflow) are allowed to vary. The ECM maintains all of its other benefits such as low power consumption compared to regular AC motors, lower noise levels, and the ability to be electronically turned up or down, it just won’t respond to pressure changes by increasing or decreasing RPM to maintain airflow for any given speed setting. While this may not be ideal for the balanced fan terminal with filter mentioned above, it is advantageous for any situation where airflow is being varied by another device in series with the ECM fan, and the ECM fan is being used simply as a booster and is expected to react to the other device by delivering the airflow that is provided to it. An example of this might be an application where a cleanroom requires a variable CFM, so a single duct VAV and ECM Fan Filter Unit are used in series. The VAV box will decide what CFM to output to the room and the ECM fan in the Fan Filter Unit is only there to make up the pressure drop of the filter. In this case it is not desirable that the fan speed up as the air valve closes, the intent is for the fan to pass the air supplied to it over the filter. In fact if the ECM were programmed with a constant volume program, the two pressure independent devices in series will usually oppose one another and cause instability where both devises constantly modulate between their upper and lower limits.
eCm moTor
ecM Motor overview
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Underfloor fan Powered Terminals
eCm motor Power and Control Connectors
ECM Motor Power Cable - 120 VAC
ECM Motor Power Connector (120/240/277 VAC).
ECM Motor Control Connector 16 Wires for programming 4 Wires for basic control.
noTe: Connectors are keyed to resist the cables being inserted incorrectly.
Black - Hot Wire (120V)
White - Neutral Wire
Green - Earth Ground Wire
Jumper Wire - This sets motor to 120V
ecM Motor overview
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Underfloor fan Powered Terminals
ECM Motor Power Cable - 240/277 VAC
Black - Hot Wire (240/277 VAC)
White - Neutral Wire
Green - Earth Ground Wire
noTe: NO Jumper Wire - 240/277 VAC.
warninG: If a 120 VAC cable is used (with jumper) and 277 VAC is applied to the motor it will be destroyed.
eCm motor Troubleshooting Checklist
Problem Check
Motor doesn't run
• 24 VAC transformer has power (test with AC volt meter)
• ECM speed controller has 24 VAC and green light is lit (See ECM Speed Controller Section)
• ECM speed controller POT/DIAL is adjusted properly (See ECM Speed Controller Section)
• ECM control cable is plugged in correctly and not damaged (See ECM Speed Controller Section)
• ECM Motor has proper power 120/240/277 VAC and cable is not damaged noTe: If a motor has a 120 VAC power cable (with a jumper) and 240/277 VAC is supplied to the motor it will be destroyed!
• Ensure ECM motor is programmed properly
• Check that blower wheel can be spun freely. Motor will go into a locked rotor fault if too much resistance is sensed upon start up and motor will fail to start.
Motor runs, but slowly
• Turn up (Clockwise) POT/DIAL on ECM speed controller (See ECM Speed Controller Section)
• ECM motor may have wrong program (example size 20 program, but motor is in a size 40 box) See ECM Programming Section.
• Check ECM motor has proper power 120/240/277 VAC and cable is not damaged
• ECM motor may be BLANK (not programmed) – ensure motor has a label. If the motor is running slowly and not responding to the speed controller, it’s very likely not programmed.
Motor Oscillates (revs fast then slow)
• ECM motor is trying to push too much air, ensure correct program in motor
• Turn down ECM speed controller POT/DIAL (See ECM Speed Controller Section)
• ECM is trying to push air against too high of an external static pressure
Motor fails HIGH-POT test• ECM motor has small capacitors that are connected from Line 1 to ground. These capacitors are for
filtering out AC line noise; however they will cause a standard AC high test to fail. To properly test a DC high POT tester must be used.
ecM trouBLeSHootiNG
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Underfloor fan Powered Terminals
noTe: If a motor has a 120 VAC power cable (with a jumper) and 240/277 VAC is supplied to the motor it will be destroyed!
eCm standard speed ControllerAll ECM Speed Controllers are manufactured by Price Electronics in Winnipeg. It allows for ON/OFF and 0-100% speed control of any ECM motor (120/240/277 VAC, all HPs).
ECM Speed Controllers have 2 modes. Manual adjust and BAS (BAS stands for Building Automation System).
manual modeOn a standard ECM speed controller, manual mode the speed is controlled by adjusting the potentiometer (POT). The POT can adjusted from 0-100%. To set the POT precisely the voltage output must be measured. Using a standard multimeter on a DC voltage setting the (+) and (-) tabs on the board can be measured. The output is 0-5 VDC.
POT Voltage Motor
0 - 1 VDC Off
1 - 4.5 VDC 0-100% Control
4.5 - 5 VDC 100%
For each type of terminal unit and fan coil, there are equations in the unit’s service and installation manual that will relate the airflow in CFM to the voltage measured across the taps on the fan speed controller. For an example see pages 7-8.
SAMPLE LABEL applied to factory programmed motor
Measure (+) VDC
Measure (-) VDC
Range is 0-5 VDC
eCm sPeed ConTroller (manUal seTTinG)
ecM StANdArd SPeed coNtroLLer
eCm sPeed ConTroller faCe
GREEN STATUS LED MUST BE BLINKING. (CODE 1 THRU 4)
POTENTIOMETER/DIAL ADJUST
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Underfloor fan Powered TerminalsecM SetuP
BAS Common (noTe: Same as 24 VAC Common)
BAS Input Type Voltage or Current - Shown set to voltage
Control Cable Jacks
BAS Positive Input (MAX +10 VDC)
24 VAC HOT Power
24 VAC Common (noTe: Same as BAS Common)
noTe: BAS Common is connected to 24 VAC Common. If 24 VAC is earth grounded then BAS Common will be earth ground as well. Polarity must be observed when connecting multiple speed controllers and transformers.
eCm sTandard sPeed ConTroller
led Blink sequence ChartThe Diagnostic LED will blink out the current status used to determine if the speed control is operating in manual/BAS mode, and if current setting is OFF or CONTROL.
*noTe: BAS input of less than 1 volt means controller is in manual (POT adjust) mode.
Blink Mode Voltage
1Manual Mode
(POT adjust) - OFF0 - 1 VDC
(at POT taps)
2Manual Mode (POT
adjust) - Control 0-100%1 - 5 VDC
(at POT taps)
3BAS Mode
(1-2 VDC signal) - OFF1 - 2 VDC
(at BAS taps)
4BAS Mode (2-10 VDC
signal) - Control 0-100%2 - 10 VDC
(at BAS taps)
LED On Steady of stays OFF
Fault Mode
• Measure input voltage – ensure 24 VAC +/- 10%
• Check wiring to speed control (ensure 24 VAC HOT and Common are not reversed)
• Cycle 24 VAC power to unit
• Check BAS input wiring – noTe: ‘BAS –‘ and 24 VAC Common are connected – observe polarity when interfacing to other systems
standard speed Controller Hardware specifications
Power 24 VAC +/- 10% @ 50/60 Hz (2 VA)
Operating Conditions
0°C to 50°C (32°F - 122°F) 0% - 95% R.H. Noncondensing
Storage Conditions
-30°C - 50°C (-22°F - 122°F) 0% - 95% R.H. Noncondensing
Processor8-bit flash microcontroller with on board Analog to Digital Converter
Inputs2 Analog (1 manual adjust dial and 1 BAS 0-10 VDC)
Outputs3 Digital (GO signal to ECM and Vspd PWM signal @80.0 Hz) and LED
Connections¼” Spade Terminals – Recommend 18-22 AWG copper wire
Dimensions 53.3 mm by 43.2 mm (2.1” by 1.7”)
Weight 45.4 grams (0.1 lbs)
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Underfloor fan Powered TerminalsecM deLuXe SPeed coNtroLLer
The Price Deluxe ECM speed controller works with a high efficiency ECM motor. This low voltage (24 VAC) speed control allows full manual (push button adjust) or BAS (2-10 VDC signal) control of the ECM motor. The deluxe speed controller also has a digital screen and BAS RPM feedback (2-10 VDC) which is proportional to motor RPM.
noTe: 24 VAC COM, BAS COM, ANALOG OUTPUT COM are all connected together. Please observe 24 VAC polarity
The Digital Display shows the user several modes of operation. This allows for easier and more precise field adjustment and troubleshooting. To change modes press both up and down buttons at the same time.
noTe: Local setpoints are stored to EEPROM and will remain set after power failures.
eCm delUXe sPeed ConTroller
Bas input signalThe BAS input signal overrides the local setpoint using a remote 0 – 10 VDC signal. If the BAS signal drops below 1 VDC local control (via the push buttons) is restored.
BAS equations exist in each fan powered terminal product service and installation manual to relate CFM to volts DC. The VDC in the equations however are for the 1-5 volt scale of voltage measured across the manual mode POT taps. 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. See standard speed controller BAS section for an example of calculating the voltage required for a specific CFM.
lCd display
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 - 9 VDC
Modulating Control 2 - 9 VDC modulates motor from 0 - 100%
9 - 10 VDC
Maximum Speed Motor is running at maximum speed (100%)
Display Mode Range
L.SEtLocal Setpoint – Manual speed adjust mode (use UP / DOWN to adjust)
0 - 100%
rPn
RPM – Shows current RPM of motor 1
If E001 – no RPM pulses are being read, check 6 position cable
If E002 – RPM reading is above 2000 RPM, check primary air
0 - 2500 RPM
bAS.rBAS Remote – BAS Mode – Voltage signal (Max reading is 9.99 VDC)
0 - 9.99 VDC
bAS.S BAS Setpoint – Current BAS setpoint 0 - 100%
WARNING Do not switch 120/208/240/277 VAC power to turn ECM motor on and off. Instead control the 24 VAC signal or BAS signal to turn the ECM motor on and off. The ECM motor has large capacitors that charge quickly on mains power up. Switching on several motors frequently could reduce building power quality.
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Underfloor fan Powered TerminalsecM deLuXe SPeed coNtroLLer
Power 24 VAC +/- 10% 50/60 Hz (2VA)
Operating Conditions
0°C to 50°C (32°F to 122°F) 0% - 95% RH non-condensing
Storage Conditions
-30°C to 50°C (-22°F to 122°F) 0% - 95% RH non-condensing
Processor 8-bit enhanced flash microcontroller
Inputs1 Analog (BAS) and 3 digital inputs (Push buttons and RPM)
Outputs
2 Digital (GO signal to ECM, and Vspd PWM signal @ 80
Hz), Display, and aux analog output
Connections¼” Spade Terminals – Recommend 16 – 22 AWG copper wire
Dimensions71 mm by 96 mm (2.8” by 3.8”) (includes mounting plate)
Shipping Weight
100 grams (0.220 lbs)
eCm deluxe speed Controller Hardware specsanalog rPm feedbackA two wire connection supplies an analog (0-10 VDC) signal that is directly proportional to the MOTOR 1 RPM. The range is 0 – 1500 RPM and it will output a proportional 0 – 10 VDC signal. If a dual blower system is used, only the RPM of motor 1 can be read.
noTe: The minimum speed of an ECM is approximately 250 RPM. Formula for outputs below (tolerance +/- 5%):
• VDC output = (RPM /250)
• RPM = (VDC * 250)
Output signal: 0 – 10 VDC @ 20 k ohm minimum input impedance and is short circuit protected (output impedance is 511 ohm to protect against incorrect wiring).
• Black Wire – Analog RPM output COM (-)
• White Wire – Analog RPM output signal (+)
BaCK of eCmdX
rPm Vs. VolTaGe
2500
2205
1890
1575
1260
945
630
315
0
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Underfloor fan Powered TerminalsecM deLuXe SPeed coNtroLLer
fiGUre 1 - eCm sTandard sPeed ConTroller wiTH ConTrol CaBle PlUGGed inTo mTr1
wiring and CablesThe ECM speed controller requires 24 VAC power from a transformer and outputs control signals to the ECM motor on dual MTA-100 jacks. Either jack or both jacks can be used (for dual fan systems).
The control cable (with RED connector) must be plugged into the circuit board correctly (See Figure 1 and Figure 2).
MTR1 Jack
ECM Control Cable (noTe: Orientation)
fiGUre 2 - eCm sTandard sPeed ConTroller wiTH ConTrol CaBle ProPerlY ConneCTed
noTe: Connector Orientation
The red connector is an AMP MTA connected. It is keyed to only go in one way however it can (and has) been forced in backwards.
noTe: If connector is inserted backwards the motor will run erratically when the speed is adjusted with the speed controller.
WARNING Ensure connector is inserted correctly.
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Underfloor fan Powered TerminalsecM deLuXe SPeed coNtroLLer
eCm sTandard sPeed ConTroller - ConTrol CaBle PinoUT
sPeed ConTroller end of ConTrol CaBle
Pin 1 – 9 - 30 VDC “GO” SIG (White)
Pin 2 – Common (Black)
Pin 3 – Common (Green)
Pin 4 – 9 - 30 VDC “PWM” SIG (Red)
MTR1
MTR2
noTe: There are two motor output jacks (MTR1 & MTR2). They are in parallel so either one can be used. Both jacks are used on dual blower units.
Left to right, 1, 2, 3, 4
noTe: If colors are different than shown here, ensure wires are still going to correct position.
moTor end of ConTrol CaBle
White (1)
Black (2)
Green (3)
Red (4)
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Underfloor fan Powered TerminalstYPicAL wiriNG diAGrAM
noTe: The ECM motor is turned ON/OFF by switching 24 VAC power to the ECM speed controller. It is not recommended to switch the main (120/240/277 VAC) power on and off. This is because the ECM motor has large capacitors that cause a current surge when turned on. This could cause a significant power spike if many units are turned on at once.
For reference only. For actual wiring specific to the supplied units please refer to the wiring diagram supplied with each unit.
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Underfloor fan Powered TerminalsPArtS LiSt
FDBU
20 30 40 50 (fdBU only)
Blower #100185-001 Morrison 90-4R c/w wheel
#100185-002 Morrison 100-4R c/w wheel
#100185-003 Morrison 100-6R c/w wheel (2 Required)
#100185-002 Morrison 100-4R c/w wheel
wheel Morrison c/w Blower Morrison c/w Blower Morrison c/w Blower (2 Required) Morrison c/w Blower
motor #019150-001 1/8 HP 115 V
#019152-002 1/4 HP 115 V
#019154-003 1/2 HP 115 V (2 Required)
#019152-002 1/4 HP 115 V
#019151-001 1/8 HP 277 V
#019153-002 1/4 HP 277 V
#019155-003 1/2 HP 277 V (2 Required)
#019153-002 1/4 HP 277 V
eCm motor N/A #019595-001 1/2 HP; Split Style 115 V / 240 V
#019595-001 1/2 HP; Split Style 115 V / 240 V
N/A
N/A #019595-002 1/2 HP; Split Style 277 V
#019595-002 1/2 HP; Split Style 277 V
N/A
Capacitor Capacitor size must match motor nameplate. (Varies per Manufacturer) Confirm motor nameplate data.#019874-001 5 MFD#019874-006 7.5 MFD#019874-002 10 MFD#019874-003 15 MFD#019874-007 20 MFD
fan speed Controller 115V-8A-233563-100
277V-8A-233563-200
#232953-100 (For use with ECM Motor only)
disconnect switch #019903-001 15A Single Pole115V, 277V
#019903-003 Two Pole 240 V
fuse Block #019459-001
motor fuses #019124-009115V 6A
#019124-009115V 6A
#019124-015115V 15A
#019124-009115V 6A
#019124-005277 V 2.5A
#019124-005277V 2.5A
#019124-010277V 7A
#019124-005277V 2.5A
eCm motor fuses #019124-001115V 8A
#019124-0015115V 15A
#019124-009240V 6A
#019124-010240V 7A
#019124-002277V 6A
#019124-009277V 6A
This document contains the most current product information as of this printing. For the most up-to-date product information, please go to priceindustries.com
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