Specification

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  
  
  
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3UBMITTAL$ATA)NFORMATION
&LO#HEK
3UBMITTAL$ATA%FFECTIVE
3UPERSEDES$ATED
0URPOSE
4ACO&LO#HEKSAREUSEDINAFORCEDHOT
WATERHEATINGSYSTEMTOPREVENThGRAVITYv
CIRCULATIONDURINGPERIODSWHENTHEBOILER
ISHOTBUTTHESPACEHEATINGZONEISNOT
WANTED4HISMAKESITPOSSIBLEFORTHEUSE
OFTHEHEATINGBOILERTOMAINTAINDOMESTIC
HOTWATERYEARROUND)NSYSTEMSWITH
MULTIPLECIRCULATORZONES&LO#HEKSALLOW
HEATTOmOWONLYINTOTHEZONESTHATARE
CALLINGFORHEAT!LSOTHETHUMBSCREW
CANBEMANUALLYOPENEDFORGRAVITYFEED
APPPLICATIONSIFTHEMAINCIRCULATORSTOPS
OPERATING
/PERATION
4ACO&LO#HEKSOPENAUTOMATICALLYWHEN
THECIRCULATORSTARTSRUNNING7HENTHE
ROOMTHERMOSTATISSATISlEDANDTHE
CIRCULATORISSTOPPEDTHE&LO#HEKS
CLOSEIMMEDIATELYPREVENTINGGRAVITY
CIRCULATION'RAVITYCIRCULATIONOFWATER
ISINDUCEDBYTHEDIFFERENCEINSPECIlC
WEIGHTORDENSITYOFTHEHOTWATERINTHE
VERTICALSUPPLYPIPEANDTHECOLDWATER
INTHEVERTICALRETURNPIPE4HELIGHTER
HOTSUPPLYSIDEWATERWHICHNATURALLY
WANTSTORISEISDRAWNUPANDAROUNDTHE
SYSTEMBYTHEhPULLINGDOWNvEFFECTOFTHE
HEAVIERCOLDWATERINTHEVERTICALRETURN
PIPE4HEAMOUNTOFGRAVITYCIRCULATIONIS
DEPENDENTONTHEHEIGHTOFTHESYSTEM
ANDTHEDIFFERENTIALBETWEENTHEHOT
ANDCOLDTEMPERATURES)NSYSTEMSWITH
MULTIPLEZONEShGHOSTmOWvMAYOCCURIF
A&LO#HEKISNOTINSTALLEDONEACHZONE
'HOSTmOWISINDUCEDWHENACIRCULATOR
ONONEZONEISRUNNINGBUTISSTILLABLE
TOBYPASSWATERTHROUGHAZONETHATIS
NOTCALLINGDUETOADIFFERENTIALINPIPING
RESISTANCEBETWEENTHETWOZONES 
3IZEAND#ONNECTIONS
!VAILABLEINvANDvBRONZESWEAT
INLINEDESIGNORvvCASTIRON
UNIVERSALTHREADEDBODYDESIGN4HE
4ACO-06CANBEUSEDFORSIZESABOVEv
2ATINGS
-AXIMUM/PERATING0RESSURE
03)K0A
-AXIMUM/PERATING4EMPERATURE
ª&&ª#
-EDIA7ATEROR7ATER'LYCOL
3WEAT)N,INE
#AST)RON
5NIVERSAL4HREADED
.UMBER
 
 
 
 
 
 
 

)NLET /UTLET
3WEAT 3WEAT
3WEAT 3WEAT
.04 .04
.04 .04
.04 .04
.04 .04
.04 .04

,BS +G
 
 
 
 
 
 
 
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3IZE
v
v
v
v
v
v
v
"ODY
"RONZE
"RONZE
#)
#)
#)
#)
#)
4YPE
(ORIZ
(ORIZ
5NIV
5NIV
5NIV
5NIV
5NIV
0RODUCT
#ONNECTIONS
3HIPPING7EIGHT
$IMENSIONS
$ATASHOWNISBASEDONmOWRATES FTSECVELOCITY
/F0IPE%QUIVALENT#V
 
 
 
 
 
 
 
2ESISTANCEIN&EET
$IMENSIONS
4ACO)NC#RANSTON3TREET#RANSTON2)&AX
4ACO#ANADA,TD/RDAN$RIVE-ISSISSAUGA/NTARIO,4"&AX
WWWTACOHVACCOM
(9$2/.)##/-0/.%.433934%-3
101-2.1
Do it Once. Do it Right.
Taco, Inc., 1160 Cranston Street, Cranston, RI 02920 Telephone: [phone] Fax: [phone]
Taco (Canada), Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3 Telephone: [phone] Fax: [phone]
Visit our website at: www.taco-hvac.com
Printed in USA
Copyright 2005
TACO, Inc.
Flo-Chek
Effective: May 1, 2000 Supersedes: June 1, 1981
Submittal Data Information
Job: Engineer:
Contractor:
Rep:
ITEM NO. MODEL NO.