Freestyle 80 - Circulator Zoning - Multiple Temperature Zones with Primary;Secondary

Figure 50 #IRCULATORZONINGWITHHIGHANDLOWTEMPERATURE
HEATINGZONES
Part number 550-142-850/0716
43
FreeStyle
®
WALL MOUNT GAS-FIRED WATER BOILER — Boiler Manual
17 Primary/Secondary System Piping (continued)
Circulator zoning – Multiple
temperature zones with primary/
secondary
(Shown with optional DHW piping)
See Figure 50.
1. 4HISCONlGURATIONISFORCIRCULATORZONEDSYSTEMSWITH
high- and low- temperature heating zones using a
BOILERLOOPCONNECTEDASASECONDARYCIRCUITOFFOFAPRI-
mary system loop. Systems zoned with circulators must
pipe the boiler loop as a secondary circuit as shown.
2. )NSTALLASEPARATECIRCULATORSUPPLIEDBYINSTALLERFOR
EACHZONE CAPABLE OFDELIVERING THE PROPERmOWAND
head as shown.
Expansion Tank required
1. 0ROVIDEASYSTEMEXPANSIONTANKFOLLOWINGTHEGUIDE-
lines on pages 37 or 39.
2. DO NOTUSEACLOSEDTYPETANKIFCONNECTINGTOABOILER
that is equipped with an automatic vent.
System setup and settings
1. (ITEMPEMITTERSMAYBE BASEBOARDS RADIATORSFAN
coils, or heat exchangers.
For cast iron radiation and old black iron pip-
ing systems a “Dirt separator with a magnet”
must be installed on the return piping to
protect the boiler heat exchanger.
 !DDAMIXINGDEVICEFigure 50, item 28) to help ensure
supply water temperature will not exceed the maximum
ALLOWABLEFORTHERADIANTSYSTEM
3. Heating zone supply water temperature settings should
BESELECTEDFORTHEHITEMPZONES4HEMIXINGDEVICE
regulates supply temperature to the lower-temp zones.
"OILER OPERATIONFOR FAN coil only applica-
tions, parameter P02 ( page 91) may be set
TOFORFASTERhRAMPUPvTOBOILERSETPOINT
temperature.
Domestic Hot Water (DHW) tank, if used
1. $(7DIRECT CONNECTION0IPEFROMTHE NEARBOILER
PIPINGTOTHE$(7TANKSBOILERCONNECTIONSASSHOWN
2. $(7ASZONE!$(7TANKCANBECONNECTEDASA
ZONEIFA$(7TANKISNOT already connected to the
boiler.
To provide DHW priority operation, use a zone
controller. See notices on page 51 to ensure compliance
WITHTHE%NERGY!CT
3. DHW Priority operation—The FreeStyle® control
TURNSOFFSPACEHEATINGTOTHE(%!4ZONESDURINGDO-
MESTICWATERHEATINGCALLSONTHE$(7INPUT4HE-!8
/.4)-%SETTING CANBE ADJUSTEDTOLIMITHOWLONG
THISOCCURS3ETTHE-!8/.4)-%TOhvTODISABLE
domestic priority. See page 65FORSETTINGINSTRUCTIONS
4. ) F  NOT connecting an indirect water heater, do not
use the DHW input or DHW Circulator output on the
FreeStyle® control.
/VERRIDING THE /UTDOOR2ESETFUNCTIONBY CONNECTING
SPACEHEATINGZONESTOINPUTSANDOUTPUTSINTENDEDFOR
DHW applications may violate Section 303 of the 2007
Energy Act. See page 127 FORCOMPLIANCEINFORMATIONAND
exemptions.
Wiring the Indirect tank aquastat to the Heating Only
"OILERREFERTO3ECTION&IELD7IRING
Controlling the Zones
1. The FreeStyle® control can be used to control space heating only,
domestic water heating only, or both.
2. The boiler and circulators can also be operated by a zone control-
ler and in some installations may be needed.
(See Note,
page 39)