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iWorx® HPU2

Printed in the USA

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

© 2011 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 distribu-
tor or TES in writing and promptly deliver the 
subject product or part, delivery prepaid, to the 
stocking distributor.   For assistance on war-
ranty returns, the purchaser 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 oper-
ated in conformity with TES instructions or 
which has been subject to accident, disaster, 
neglect, misuse, misapplication, inadequate 
operating environment, repair, attempted 
repair, modification or alteration, or other 
abuse, will not be covered by this warranty.

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

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 
applicable 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 simi-
lar in design and functionally equivalent to the 
defective product or part.   TES reserves the 
right to make changes in details of design, con-
struction, 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 
REPLACING 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 consequential damages, so these limitations 
or exclusions may not apply to you.

LIMITED WARRANTY STATEMENT

Summary of Contents for iWorX HPU2

Page 1: ...lation Instructions 3 Precautions 3 General 3 Static Electricity 4 Location 4 FCC Compliance 4 Before Installing 4 About this Document 4 Inspecting the Equipment 4 What is Not Included with this Equipment 4 Equipment Location 5 Selecting a Power Source 5 Installation 5 Mounting the Device 5 Routing Cabling to the Device 6 Grounding the Device 7 Wiring Information 7 Connecting Input Devices 9 Conne...

Page 2: ...e for main plant synchronization Remote sensor capabilities Automatic configuration with the LCI Real Time Clock Alarm Event reporting PURPOSE OF THIS GUIDE The iWorx HPU2 Installation Guide provides installation information for the HPU2 Controller The reader should understand basic HVAC concepts intelligent environmental control automation and basic LON WORKS networking and communications This ap...

Page 3: ...nd local electrical codes Use only copper conductors Description Audience Purpose iWorx HPU2 Application Guide Document No 505 025 Application Engineers Installers Service Personnel Start up Technicians End user Provides complete instructions for setting up and using the iWorx HPU2 controller iWorx LCI2 Application Guide Doc ument No 505 002 Application Engineers Installers Service Personnel Start...

Page 4: ...energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a par ticular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to cor...

Page 5: ...o that of the controller The controller and sensor power supplies can use the same power source If both are using the same power source the loads must have EMF protection This protection can be integral to the load or installed in the 24 VAC wiring across the load s coil To provide necessary RFI and transient protection the controller s ground GND pin T40 must be connected to earth ground or the e...

Page 6: ...1 Taco Electronic Solutions Inc Figure 1 Mounting Dimensions Routing Cabling to the Device Cabling used to connect the power source and cabling used to connect the FTT 10A network must remain separated within the control enclosure and wiring conduit ...

Page 7: ... the risk of electrical shock and may increase the possibility of interference with radio TV reception For best performance connect the power supply common terminal T38 to the same external point as the ground terminal T40 WIRING INFORMATION WARNING Terminals 4 and 6 are connected internally on all HPU2 controllers Disconnect ALL power sources when installing or servicing this equipment to prevent...

Page 8: ...iWorx HPU2 8 502 025 Effective April 12 2011 2011 Taco Electronic Solutions Inc Figure 3 HPU2 Wiring Example Power Sinking ...

Page 9: ...aco Electronic Solutions Inc Figure 4 HPU2 Wiring Example Power Isolated Connecting Input Devices Thermostat STAT To connect the heat pump thermostat to the unit attach one wire from the thermostat to STAT T3 and the other wire to the adjacent common T4 ...

Page 10: ...eversing valve must be connected to a 24 VAC pilot relays if the load is greater than 1 Amp If the load is less than 1 Amp connect the reversing valve input to RV T29 and adjacent TC12 T30 Fan FAN The output for the fan must be connected to a 24 VAC pilot relay if the load is greater than 1 Amp If the load is less than 1 Amp connect the fan input to FAN T31 and adjacent TC12 T30 Other Connections ...

Page 11: ... Recommended Sensor Wire FTT 10A Network Speed 78KBPS Cabling Maximum node to node distance 1312 feet 400 meters Maximum total distance 1640 feet 500 meters For detailed specifications refer to the FTT 10A Free Topology Transceiver User s Guide published by Echelon Corpo ration www echelon com support documentation manuals transceivers Mechanical Housing Dimensions 5 55 141mm high 6 54 166 mm wide...

Page 12: ...ion problems The following table lists the functions of the controller s LEDs in the order they appear from left to right on the unit LED Indication Status Solid green when running and configured by an LCI networking Flashing green when running and NOT configured by an LCI stand alone Solid red when a fault condition exists control shut down Blinking Red the controller has a device failure Solid A...

Page 13: ...he controller and output pilot relay have been powered with 24 VAC and the output has been correctly wired to the coil of the pilot relay Also ensure that the pilot relay has a 24 VAC coil The 10K thermistor reading is at its maximum or minimum The input is either shorted or open The Heat or Cool outputs will not come on even though the space requires conditioned air Is there water flow in the sys...

Page 14: ...e following Version numbers of application software Device and or firmware version number A complete description of difficulties encountered Notes What is Save for in the Members screen and when do I press it This button stores network information into the LHP2 about the controllers in its group Press this button when you have made any changes to the grouping What iWorX controllers can be part of ...

Page 15: ...iWorx HPU2 502 025 Effective April 12 2011 15 2011 Taco Electronic Solutions Inc ...

Page 16: ...covered by this warranty TES products are not intended for use to sup port fire suppression systems life support sys tems critical care applications commercial aviation nuclear facilities or any other applica tions where product failure could lead to injury to person loss of life or catastrophic property damage and should not be sold for such pur poses If in doubt as to whether a particular produc...

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