Watts 654 Specification sheet



 of2 ©203WattsRadiant



 







 











 

















Snow/Ice

Sensor090

Outdoor

Sensor

070

Supply

Sensor

082

Relay

System

Pump

Relay

Optional

tN4

Communication

Snow

Sensor095

Slab

Sensor072

Slab

Brn

Slab

Brn

Com

BlkYel Blu Red

Com

BlkYel Blu Red

Or And/Or

Snow

Sensor

095

































C tN4

Modulating

Boiler

–+

Transformer

Slab

Brn

Mod

tN4Aux Ht RC

Bret

Out/

Com–

BlkYel Blu Red Sup

No Power



5V(ac)





Backof

Control



Thecontrolislocallylockedandtheaccess

levelcannotbechanged.SettoLockwhen

installationhasbeencompleted.



Thecontrolisunlockedandtheaccess

levelmaybechanged.GototheToolbox

menutochangetheaccesslevel.Setto

Unlockduringtheinstallationprocess.

Meets Class B: ICES & FCC Part 15

Power: 24 V (ac) ±10%, 60 Hz, Class 2,

16 VA standby, 100 VA fully loaded

Relays: 24 V (ac) 2 A, 3.5 A combined

1058-04

Switch

Settings

www.WattsRadiant.com

Order #81016552

Designed and assembled in Canada

Lock

Unused

Unlock

2

H1226A

Snow Melting Control 654

A Watts Water Technologies Company

Springeld,MO•Tel.(800)276-249•Fax:(47)864-86•www.wattsradiant.com

Burlington,ONT.•Tel.(905)332-4090•Fax:(905)332-7068•www.watts.ca

IS-WR-Snow_Melting_Control-654328  ©203WattsRadiant













ENTER

HomeButton

Returntothe

HomeScreen

Pressandholdfor3

secondstoaccessthe

programmingmenus.

Touchtogotothe

nextsetting

Touchtoquicklyenter

theViewmenu

Touchto

adjustsettings

Operation

Field

StatusField

Touchtodisplay

RunTime,

Outdoor&Slab

Temperature

Touchto

MeltorStop

Touchtoturnsystem

offwhileaway



 



Selectthecontrolapplicationmode.

PWM=HydronicPulseWidthModulation.

BOIL=Hydronicboilerheatssnowmelting

system.

MIX=Hydronicmixingvalveorinjection

pumpheatssnowmeltingsystem.

ELEC=Electricsnowmelt.

090=TandemSnow/IceDetection

Default=PWM



SelectifaSnow/IceSensor090orSnow

Sensor095isinstalled.

Default=090



SelectifaSlabSensor072isinstalledto

measuretheslabtemperature.

Default=ON



Selectiftheslabshouldbeprotectedfromlarge

temperaturedifferentialstoavoidcrackingthe

concreteduetohightensilestress.

Default=ON

TheSystemMenuprovidessettingsonhowtoconfigureandoperatethemechanicalequipment.

 



SelectiftheOut/Bretwiringterminalis

connectedtoanoutdoorsensororaboiler

returnsensor.

Default=OUT



EconoMeltallowstheusertomechanically

removesnowthenmanuallystartthesystem

tomeltthethinsnowlayerorice.

Default=OFF



Selectifthesystempumplocatedonthe

tekmarNet®SystemControlshouldoperate

whenthesnowmeltzoneisheating.

Conditions:ApplicationModeissettoPWM,

BoilorMixandBoilerTypeissettoCTRL

(tN4control).

Default=ON



Selectiftheauxiliaryrelayshouldfunction

assystempumporasanalert.

Default=SYS



Selecttolimittheamountofmeltingrun

time.

Default=3.0days

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