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iWorx® MPU2/MPU3

Printed in the USA

iWorx® and iView® are registered trademarks of Taco Electronic Solutions, Inc. 

© 2013 Taco Electronic Solutions, Inc. 

LON, LONWORKS, & LONMARK are trademarks of Echelon Corporation

C

ONTROLS 

M

ADE 

E

ASY

®

Taco Electronic Solutions, Inc.

, 1160 Cranston Street, Cranston, RI 02920 

Telephone: (401) 942-8000 FAX: (401) 942-2360.

Taco (Canada), Ltd.

, 8450 Lawson Road, Unit #3, Milton, Ontario L9T 0J8. 

Telephone: 905/564-9422. FAX: 905/564-9436.

Taco Electronic Solutions, Inc. is a subsidiary of Taco, Inc. 
Visit our web site at: 

http://www.taco-hvac.com

Taco Electronic Solutions, Inc. (TES) will repair 
or replace without charge (at the company's 
option) any product or part which is proven 
defective under normal use within one (1) year 
from the date of start-up or one (1) year and six 
(6) months from date of shipment (whichever 
occurs first).

In order to obtain service under this warranty, it is 
the responsibility of the purchaser to promptly 
notify the local TES stocking distributor or TES in 
writing and promptly deliver the subject product 
or part, delivery prepaid, to the stocking distribu-
tor.  For assistance on warranty returns, the pur-
chaser may either contact the local TES stocking 
distributor or TES.  If the subject product or part 
contains no defect as covered in this warranty, 
the purchaser will be billed for parts and labor 
charges in effect at time of factory examination 
and repair.

Any TES product or part not installed or operated 
in conformity with TES instructions or which has 
been subject to accident, disaster, neglect, mis-
use, misapplication, inadequate operating envi-
ronment, repair, attempted repair, modification or 
alteration, or other abuse, will not be covered by 
this warranty.

TES products are not intended for use to support 
fire suppression systems, life support systems, 
critical care applications, commercial aviation, 
nuclear facilities or any other applications where 
product failure could lead to injury to person, loss 
of life, or catastrophic property damage and 
should not be sold for such purposes.

If in doubt as to whether a particular product is 
suitable for use with a TES product or part, or for 
any application restrictions, consult the applica-
ble TES instruction sheets or in the U.S. contact 
TES at 401-942-8000 and in Canada contact 
Taco (Canada) Limited at 905-564-9422.

TES reserves the right to provide replacement 
products and parts which are substantially similar 
in design and functionally equivalent to the 
defective product or part.  TES reserves the right 
to make changes in details of design, construc-
tion, or arrangement of materials of its products 
without notification.

TES OFFERS THIS WARRANTY IN LIEU OF 
ALL OTHER EXPRESS WARRANTIES.   ANY 
WARRANTY IMPLIED BY LAW INCLUDING 
WARRANTIES OF MERCHANTABILITY OR 
FITNESS IS IN EFFECT ONLY FOR THE 

DURATION OF THE EXPRESS WARRANTY 
SET FORTH IN THE FIRST PARAGRAPH 
ABOVE.

THE ABOVE WARRANTIES ARE IN LIEU OF 
ALL OTHER WARRANTIES, EXPRESS OR 
STATUTORY, OR ANY OTHER WARRANTY 
OBLIGATION ON THE PART OF TES.

TES WILL NOT BE LIABLE FOR ANY SPE-
CIAL, INCIDENTAL, INDIRECT OR CONSE-
QUENTIAL DAMAGES RESULTING FROM 
THE USE OF ITS PRODUCTS OR ANY INCI-
DENTAL COSTS OF REMOVING OR REPLAC-
ING DEFECTIVE PRODUCTS.

This warranty gives the purchaser specific rights, 
and the purchaser may have other rights which 
vary from state to state.   Some states do not 
allow limitations on how long an implied warranty 
lasts or on the exclusion of incidental or conse-
quential damages, so these limitations or exclu-
sions may not apply to you.

LIMITED WARRANTY STATEMENT

Summary of Contents for iWorx MPU2

Page 1: ...Stage 2 Cooling Stage 3 Cooling Stage 4 Digital Economizer 24 Volts AC 1A 50C 0 5A 60C limited by the Class 2 supply rating Modulated Heating Modulated Cooling Modulated Economizer Bypass Damper 0 10...

Page 2: ...er source current requirements add the power consumption of all peripheral devices to that of the control ler The controller and sensor power supplies can use the same power source If both are using t...

Page 3: ...d Consult the equipment supplier or an experienced radio TV technician for help You are cautioned that any changes or modifications to this equipment not expressly approved in these instructions could...

Page 4: ...iWorx MPU2 MPU3 4 502 009 Effective April 17 2013 2013 Taco Electronic Solutions Inc...

Page 5: ...iWorx MPU2 MPU3 502 009 Effective April 17 2013 5 2013 Taco Electronic Solutions Inc...

Page 6: ...iWorx MPU2 MPU3 6 502 009 Effective April 17 2013 2013 Taco Electronic Solutions Inc...

Page 7: ...iWorx MPU2 MPU3 502 009 Effective April 17 2013 7 2013 Taco Electronic Solutions Inc...

Page 8: ...er Status Air Differential Pressure Transmitter Added Module Required At least 1 VAVD up to 32 on Taco LON Bus Setup Instructions 1 Press Controllers from main screen 2 Select required MPU from contro...

Page 9: ...etp High g Press Save 12 Press Pressure Settings 13 The Pressure Settings menu opens a Select Static Pressure Setpoint in Inches of WC b Select the IAQ Setpoint if applicable c Select Min Output Volta...

Page 10: ...g or cooling c Press Save 16 Press Staged Cooling 17 The Staged Cooling menu opens a Select number of stages of equipment 0 4 b Select the stage control band in degrees Cannot be set to 0 c Select the...

Page 11: ...e menu opens Select a ON fan is on in Occupied mode but cycles with Heat Cool call in Unoccupied b Auto fan always cycles with Heat Cool call c Press Save 23 Press Economizer 24 The Economizer menu op...

Page 12: ...iWorx MPU2 MPU3 12 502 009 Effective April 17 2013 2013 Taco Electronic Solutions Inc...

Page 13: ...iWorx MPU2 MPU3 502 009 Effective April 17 2013 13 2013 Taco Electronic Solutions Inc...

Page 14: ...tial Pressure Transmitter Added Module Required At least 1 VAVD up to 32 on Taco LON Bus Note For Floating Point Valve Setup and Wir ing See MPU2 Application Guide 505 009 Setup Instructions 1 Press C...

Page 15: ...Setp High g Press Save 12 Press Pressure Settings 13 The Pressure Settings menu opens a Select Static Pressure Setpoint in Inches of WC b Select the IAQ Setpoint if applicable c Select Min Output Volt...

Page 16: ...ed Cooling menu opens a Select Min AO Output Voltage 0 10VDC 2 0VDC Shown as Example b Select Max AO Output Voltage 90 10VDC 10 0VDC shown as example c Press Save d Note DO NOT change factory KP KI se...

Page 17: ...Fan Type menu opens Select a ON fan is on in Occupied mode but cycles with Heat Cool call in Unoccupied b Auto fan always cycles with Heat Cool call c Press Save 23 Press Economizer 24 The Economizer...

Page 18: ...iWorx MPU2 MPU3 18 502 009 Effective April 17 2013 2013 Taco Electronic Solutions Inc...

Page 19: ...iWorx MPU2 MPU3 502 009 Effective April 17 2013 19 2013 Taco Electronic Solutions Inc...

Page 20: ...conomizer enabled ON or dis abled OFF during the unoccupied time peri ods b Select economizer setpoint which specifies the outside air temperature at which the economizer is enabled c Select Min Fresh...

Page 21: ...ive April 17 2013 21 2013 Taco Electronic Solutions Inc 10 Press Cutoff Temps 11 The Cutoff Temps menu opens a Specify Max OAT Heating b Specify Min OAT Cooling c Specify Max OAT Economizer d Specify...

Page 22: ...iWorx MPU2 MPU3 22 502 009 Effective April 17 2013 2013 Taco Electronic Solutions Inc...

Page 23: ...iWorx MPU2 MPU3 502 009 Effective April 17 2013 23 2013 Taco Electronic Solutions Inc...

Page 24: ...screen 2 Select required MPU from controller list and press appropriate controller 3 Press All Settings 4 Press Next 14 5 Press Next 4 6 Press IAQ Mode 7 The IAQ Mode menu opens 8 Select IAQ sensor i...

Page 25: ...iWorx MPU2 MPU3 502 009 Effective April 17 2013 25 2013 Taco Electronic Solutions Inc d Select Offset calibration PPM e Press Save...

Page 26: ...can cycle power to the controller Refer to the LCI documentation for more infor mation on resetting the controller using the LCI Can my iWorx system contain multiple MPU controllers Yes provided that...

Page 27: ...the Document and instructions or which has been subject to accident disaster neglect misuse misapplication inadequate operating environment repair attempted repair modification or alteration or other...

Page 28: ...be covered by this warranty TES products are not intended for use to support fire suppression systems life support systems critical care applications commercial aviation nuclear facilities or any othe...

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