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LIMITED WARRANTY STATEMENT

Taco, Inc. will repair or replace without charge (at
the company’s option) any Taco High Efficiency
circulator  or  circulator  part  which  is  proven
defective under normal use within three (3) years
from the date of manufacture.

In order to obtain service under this warranty, it
is the responsibility of the purchaser to promptly
notify the local Taco stocking distributor or Taco
in writing and promptly deliver the subject product
or part, delivery prepaid, to the stocking distrib-
utor.  For  assistance  on  warranty  returns,  the
purchaser  may  either  contact  the  local  Taco
stocking distributor or Taco. If the subject prod-
uct 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 Taco product or part not installed or operated
in  conformity  with  Taco  instructions  or  which
has been subject to misuse, misapplication, the

addition  of  petroleum-based  fluids  or  certain
chemical  additives  to  the  systems,  or  other
abuse, will not be covered by this warranty.

If in doubt as to whether a particular substance
is suitable for use with a Taco product or part, or
for  any  application  restrictions,  consult  the
applicable  Taco  instruction  sheets  or  contact
Taco at (401-942-8000).

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

TACO  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 DURA-

TION  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 TACO.

TACO  WILL  NOT  BE  LIABLE  FOR  ANY  SPE-
CIAL,  INCIDENTAL,  INDIRECT  OR  CONSE-
QUENTIAL DAMAGES RESULTING FROM THE
USE OF ITS PRODUCTS OR ANY INCIDENTAL
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.

Do your best work.

®

TACO, 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.

Visit our web site at:

http://www.taco-hvac.com

Printed in USA

Copyright 2013

TACO, Inc.

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VT2218 PERFORMANCE CURVES

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Min. Speed 1 (9W)

Speed 2 (24W)

Speed 3 (40W)

Max. Speed 4 (58W)

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Summary of Contents for Viridian Delta-T

Page 1: ...y temperature return temperature and error code diagnostics Use with a Taco ZVC Zone Valve Control or SR Switching Relay for ON OFF operation Integral Flow Check IFC is included in carton Simply press into discharge flange if required Swivel flanged casing provides 360 rotation mounting flexibility BIO BarrierTM protects rotor and bearings from black iron oxide Whisper quiet operation 40dB INSTALL...

Page 2: ...NE 2 V2 V2 V3 V3 P P ZONE 3 ZONE 3 V2 V3 P AIR PURGING SEQUENCE BY ZONE LAST FIRST KEY VI V2 V3 SHUT OFF ISOLATION VALVE P TACO CIRCULATOR WITH IFC FF FAST FILL BOILER FEED VALVE PV4 PURGE VALVE RECOMMENDED PURGING STEPS 1 CLOSE V1 PV4 V2 2 OPEN V3 3 OPEN FF VALVE 4 OPEN V2 PV4 TO PURGE LAST ZONE FIRST ZONE 3 5 CLOSE FF VALVE 6 CLOSE V2 PV4 7 REPEAT STEPS 1 TO 6 FOR EACH ADDITIONAL ZONE PURGE ZONE...

Page 3: ... M ZV1 ZV2 ZV3 M M M M M SUPPLY T SENSOR WIRING RETURN SUPPLY T SENSOR WIRING RETURN 3 KEY VI V2 V3 SHUT OFF ISOLATION VALVE P TACO CIRCULATOR WITHOUT IFC INSTALLED FF FAST FILL BOILER FEED VALVE PV4 PURGE VALVE ZV ZONE VALVE RECOMMENDED PURGING STEPS 1 CLOSE V1 PV4 V2 2 OPEN V3 AND ZV3 3 OPEN FF VALVE 4 OPEN V2 PV4 TO PURGE LAST ZONE FIRST ZONE 3 5 CLOSE FF VALVE 6 CLOSE V2 PV4 7 REPEAT STEPS 1 T...

Page 4: ...sion be sure to add vibration dampeners to piping when mounting circulator to wall or floor joists ATTENTION Pour réduire la possibilité de transmission de bruit veillez à ajouter des amortisseurs de vibration à la tuyauterie lors du montage du circulateur sur des chevêtres de mur ou de plancher WARNING Risk of electric shock To reduce the risk of electric shock be certain that it is connected onl...

Page 5: ...sulter The VT2218 has 5 Operating Modes Delta T Varies speed to maintain a fixed temperature differential factory pre set mode Constant Speed 4 fixed speeds see pump curves on previous page to select desired performance Set Point Heat Increases speed to increase temperature includes Boiler Protection option Set Point Cool Increases speed to lower temperature Boiler Protection Varies speed to maint...

Page 6: ...In Constant Speed mode the VT2218 will always start and run at the pre set Speed Level 1 through 4 Only watts will be dis played Temperature sensors are not active in this mode Set Point Heat Mode with Boiler Protection option 50 F 220 F default 105 F BP default 140 F In Set Point Heat mode the VT2218 will start at the lowest speed It then immediately switches to Variable Speed operation increasin...

Page 7: ...sor disconnected Reconnect sensor SENSOR 1 SHORTED Bad sensor Replace sensor SENSOR 2 SHORTED Bad sensor Replace sensor AC INPUT UNDER VOLTAGE Low voltage problem Check power supply AC INPUT OVER VOLTAGE High voltage problem Check power supply LOCKED ROTOR Probable locked rotor or motor failure Replace pump MOTOR OVER CURRENT Possible locked rotor Replace pump OVER TEMPERATURE PC Board overheating...

Page 8: ...to make changes in details of design construc tion or arrangement of materials of its products without notification TACO 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 DURA TION OF THE EXPRESS WARRANTY SET FORTH IN THE FIRST PARAGRAPH ABOVE THE ABOVE WARRANTIES ARE IN LIEU OF ALL ...

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