Heat Link - Marks Supply

1

®

Heat Link

Technical Guide

®

LinkStat

Third Version, May 2011

®

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KTable of Contents

Thermostatic Zones Defi ned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

StatLink® System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Technical Data

HeatLink® Electrical Thermostat #46443 . . . . . . . . . . . . . . . . . . . . . . . . 8

HeatLink® Digital Thermostat #46543 . . . . . . . . . . . . . . . . . . . . . . . . . 10

HeatLink® Digital Timer Thermostat #46643 . . . . . . . . . . . . . . . . . . . 12

HeatLink® Digital Heat/Cool Timer Thermostat #46673 . . . . . . . . 14

StatLink® Modules #40200 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Thermostat & Actuator Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

StatLink® Rough-in Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

StatLink® Module Electrical Schematics

Connecting 1 Zone Thermostat and Actuators . . . . . . . . . . . . . . . . 24

Connecting #40226 Base Module to Time Delay Relay . . . . . . . . . 26

Connecting Multiple #40226 Base Modules . . . . . . . . . . . . . . . . . . . 28

Connecting #40226 Module to #31355 Control . . . . . . . . . . . . . . . 30

HeatLink® Thermostat and Actuator Electrical Schematics

Connecting Actuators with End Switches to #31355 Control . . . 32

HeatLink® Thermostat Wiring to Actuator . . . . . . . . . . . . . . . . . . . . . 34

HeatLink® Thermostat Wiring to Actuators with End Switches . . 35

HeatLink® Digital Timer Thermostat Wiring . . . . . . . . . . . . . . . . . . . . 36

HeatLink® Digital Heat/Cool Thermostat Wiring . . . . . . . . . . . . . . . 37

HeatLink® Digital Heat/Cool Thermostat Interlock Wiring . . . . . . 38

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StatLink® Features

Features:• StatLink® is a modular control system

• Actuators are pre-wired from factory

• The StatLink® modules simplify wiring and troubleshooting

• Temperature setback (both manual & automatic) is available.

• Each component has a heat demand indicator for easy troubleshooting

• maximum of 4 actuators per zone

• one 24V/60VA transformer can power as many as 12 actuators

Thermostatic “Zones” Defi ned• Zones are areas of thermostatic control

(which in turn “drive” an actuator)

• Zones do not apply to the number of loops in a system

A zone can be a single valve actuator in front of a manifold being

controlled by one thermostat. (This still allows for individual room

by room and loop by loop temperature adjustment using a fl ow

balancing manifold.)

®

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A zone can be a single manifold actuator being

controlled by one thermostat.

A zone can be multiple manifold actuators being

controlled by one thermostat.

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StatLink® Features

6®

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The StatLink® System

StatLink® System Components (see diagram on opposite page)

#40226 6 Zone Base Module; one (1) is required for each manifold

location. **

#40234 4 Zone Expansion Module; required if the manifold supplies

more than six zones. One (1) for every four (4) additional zones. **

One (1) thermostat per zone.

#46443 Electronic Thermostat

#46543 Digital Thermostat

#46643 Digital Timer Thermostat; allows for 1 setback schedule.

#46673 Digital Heat/Cool Timer Thermostat; allows for 1 setback

schedule.

#40242 - 2 Heavy Duty Zone Expansion Module; 2 zones with up to

12 actuators per zone.

#56201 Actuator for #62000 & #63000 series zone valves or #76100

& 76200 series stainless steel manifolds.

For zone valves, used if one thermostat controls an entire

manifold. One (1) valve and one (1) actuator per manifold

(thermostat) (if valve cannot be installed see 9 ).

For stainless steel manifolds, used if one or more loops on a

manifold are controlled by a thermostat. One (1) per loop per

thermostat.

#56200 Actuator for #78200 & #78400 series manifold modules.

Used if one or more loops on a manifold are controlled by a

thermostat. One (1) per loop per thermostat.

#56202 Actuator for #78300 series supply modules. Used if one or

more loops on a manifold are controlled by a thermostat. One (1)

per loop per thermostat.

Standard AWG 18 cable (not supplied by HeatLink). Thermostat and

Module terminals are color coded to match the color wires found

in fi re-alarm cable (FAS105).

24Vac Class II Transformer required (not supplied by HeatLink). Max.

60VA recommended per module block. **

1

2

3

4

5

6

7

8

9

10

11

12

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**Max. recommended, 12 actuators per module.

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1

3 4

5

8

9

13

12

14

15

9

11 11

11 11

14

The StatLink® System

2

6

10 10

7

13 Dual dry contacts to activate a boiler, pump (via an external 24Vac

relay) or #31000 series control.

#43404 5-wire Flat Cable to Standard Wire Adaptor; utilize existing

wiring 15 when upgrading components.

14

4

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SHeatLink® Electronic Thermostat #46443

3-3/8" (84 mm)

3-1

/8"

(80

mm

)

Depth: 1-1/4" (31 mm)

Specifi cations:

Operating Voltage: 24V

Operating Temperature: 0˚C to 50˚C / 32˚F to 122˚F

Output (Triac): 15W

Setting Temperature: 5˚C to 30˚C / 41˚F to 86˚F

Static Diff erential: 0.5˚C / 0.9˚F

Temperature Setback: 4˚C / 7˚F

Temperature Sensor: 10kΩ NTC thermistor

Protection Class: IP 30

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Features:4 wire electronic thermostat with optional setback

• LED call for heat indicator.

• Large easy to adjust dial.

• 3 position operation selector switch

• Manual or automatic (external timer) setback

• Internal or external sensor operation

Power: 24Vac (no battery)

Contacts: 3+1 Wires

C (power) - 2 terminals for easy direct connection of

actuator

R (power)

W (heat demand via triac [silent operation])

(setback signal from StatLink [optional])

NTC (optional external sensor)

Regulation: Analog electronic regulation optimized for high

mass heating system controlled by thermoelectric

actuators.

Operation: 3 position selector switch: comfort/automatic/setback

operation

Setback: 4˚C / 7˚F

Display: Large easy to adjust dial with dual temperature scale. TH

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SHeatLink® Electronic Thermostat #46443

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SHeatLink® Digital Thermostat #46543

3-1/8" (80 mm)

3-1

/8"

(80

mm

)

Depth: 1-1/4" (31 mm)

Specifi cations:



Set Temperature Range: 5˚C to 35˚C / 41˚F to 95˚F

Set Temperature Precision: 0.5˚C / 0.5˚F

Measured Temperature

Precision:

0.1˚C / 0.2˚F

Factory Setting: ˚C


Output (Triac): 15W


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HeatLink® Digital Thermostat #46543

Features:4 wire PI fully digital electronic setback thermostat

• Proportional integral temperature regulation

• Fully menu driven

• Large display showing current temperature.

• Setpoint display with push of a button.

• Manual or automatic (external timer) setback

• Floor warming functionality with room, fl oor or combined operation


Contacts: 3+1 wires


actuator

R (power)


(setback signal from StatLink [optional])


Regulation: Pulse width modulation (PWM) with proportional

integral (PI) logic.

Adjustable characteristics for system optimization

(high mass, low mass, baseboard, fan coil and

cooling)

Combined room/fl oor: The fl oor sensor acts as a tem-

perature limiter.

Operation: Menu selectable: standard/automatic/setback/freeze

protection operation

Optional pump exercise functionality

Display: Temperature in ˚C or ˚F

Large display showing current temperature.

Setpoint display with push of a button.

Shows: mode of operation; call for heat

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SHeatLink® Digital Timer Thermostat #46643

5" (125 mm)

3-3

/8"

(86

mm

)

Depth: 1-3/8" (35 mm)

Specifi cations:



Set Temperature Range: 5˚C to 35˚C / 41˚F to 95˚F

Set Temperature Precision: 0.5˚C / 0.5˚F

Measured Temperature

Precision:

0.1˚C / 0.2˚F

Factory Setting: ˚C and 12 hour clock


Output (Triac): 15W


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SHeatLink® Digital Timer Thermostat #46643

Features:4 wire PI fully digital electronic thermostat with 7 day timer



• Large display showing current temperature and time.

• Easy to program 7 day 24 hour timer with 4 user programs and 9

fi xed programs

• Setback signal feedback to StatLink

• ITCS function for intelligent setback functionality


Backup: programs forever

clock for 1 day

Contacts: 3+1 wire


actuator

R (power)


(setback signal to StatLink [optional])





(high mass, low mass, baseboard, fan coil and

cooling)

ITCS function for intelligent setback functionality

Operation: Menu selectable: standard/automatic/setback/freeze

protection operation

Holiday operation.


Timer: Easy to program 7 day 24 hour timer

Programmable in 1 hour increments.

Switchable clock display (am/pm or 24hour)

Featuring 4 user programs and 9 fi xed programs


Large display showing current temperature and time.

Graphic program display


Shows: mode of operation; call for heat; active

setback program

14®

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LinkHeat

5" (125 mm)

3-3

/8"

(86

mm

)

Depth: 1-3/8" (35 mm)

HeatLink® Digital Heat/Cool Timer Thermostat #46673

Specifi cations:

Operating Voltage: 24Vac (no battery)

Operating temperature: 0˚C to 50˚C / 32˚F to 122˚F

Set temperature range: 5˚C to 35˚C / 41˚F to 95˚F

Set temperature precision: 0.5˚C / 0.5˚F

Measured temperature

precision:

0.1˚C / 0.2˚F

Factory setting: ˚C and 12 hour clock


Heating Output (triac): 15W

Cooling Output (relay): 100W

Protection class: IP 30

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SHeatLink® Digital Heat/Cool Timer Thermostat #46673

Features:4+3 wire PI fully digital electronic heat/cool thermostat with 7 day timer



• Large display showing current temperature and time.

• Easy to program 7 day 24 hour Timer with feedback to StatLink

• ITCS function for intelligent setback functionality

• Heat, cool and automatic operation

• Separate power circuit for heating and cooling

• Relay output for both cooling and Fan.


Backup: programs forever

clock for 1 day

Contacts: 6+1 wires

C (heating) - 2 terminals for easy direct connection of

actuator

R' (cooling/fan)

R (heating) G (fan demand via relay)


Y (cooling demand via relay)

(setback signal to StatLink [optional])





(high mass, low mass, baseboard, fan coil and cooling)

Separate characteristics for heating and cooling.

ITCS function for intelligent setback functionality

Operation: Menu selectable: standard/automatic/setback opera-

tion

Holiday operation.

Heat/Cool: Menu selectable: heat, cool or automatic operation

Fan: Menu selectable: on, off , automatic


Timer: Easy to program 7 day 24 hour timer

Programmable in 1 hour increments.

Switchable clock display (am/pm or 24hour)

Featuring 4 user programs and 9 fi xed programs


Large display showing current temperature and time.


Shows mode of operation; call for heat, cool and fan;

active setback program.

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StatLink® Modules #40200 Series

Features:24Vac modular zone wiring system allowing easy connection of

thermostats and actuators.

• LED indicator for each zone

• Cover with LED viewer

• Multiple actuators per zone.

• Color coded connections.

• Universal wire connections

• 2 setback channels

40226 StatLink 6 Zone Base Module

• 24Vac input; max 60VA; Fused at 2.5A

• DPST NO Pump relay (no time delays)

• 6 zones

• Up to 4 actuators per thermostat

• LED lights to indicate operational status of each zone.

• 2 timer channels

• Color coded terminals

8-7/8" (224 mm)

3-1

/2"

(88

mm

)

Depth: 2-1/4" (58 mm)

#40226

MO

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StatLink® Modules #40200 Series

40234 StatLink 4 Zone Expansion Module

• Plugs directly into power or base module

• Zone signal feedback to power or base module

• 4 zones

• Up to 4 actuators per thermostat

• LED lights to indicate operational status of each zone.

• 2 timer channels

• Color coded terminals

40242 StatLink 2 Heavy Duty Zone Expansion Module

• Same as 40234 Expansion Module but

• 2 Zones with up to 12 actuators per zone.

6-1/4" (159 mm)

3-1

/2"

(88

mm

)

Depth: 2-1/4" (58 mm)

#40234

6-1/4" (159 mm)

3-1

/2"

(88

mm

)

Depth: 2-1/4" (58 mm)

#40242

MO

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18®

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Thermostat and Actuator Operation

The HeatLink® #46000 Series Thermostats & StatLink® Modules are

integrated components, working in conjunction with #56200 Series

Actuators. The digital thermostats work on proportional plus integral

(PI) processing, producing a pulse width modulation (PWM) output, that

is similar to an analog output such as the one produced by the HeatLink

electronic or mechanical thermostats. The PI processing identifi es

the off set between the actual temperature and the desired set point,

within a defi ned diff erential that centers at the set point. It adjusts the

control action to compensate for the diff erence, so that the off set can

be eventually eliminated. In essence, it works on a set point and a cycle

length that is measured either in minutes or in cycles per hour. The

thermostats operate once per cycle.

The on time in each cycle is determined by the diff erence between the set

point and the actual temperature (the error). If the error is positive (i.e. the

set point is above the actual temperature), the on time is increased from

50% of the cycle time, or vice versa. If the actual temperature is right on

the set point, the on time is exactly 50% of the cycle time. Essentially,

PWM thermostats operate for longer, or shorter, on times each cycle,

depending the degree of error in the actual temperatures.

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LinkHeat 19

71˚

(22˚

)

12

34

56

78

910

1112

1314

0

Tim

e (m

inut

es)

70˚

(21˚

)

61˚

(20˚

)

1516

1718

1920

Room Temperature in ˚F (˚C)

Tem

pera

ture

Differential Setting

Pul

seW

idth

Cyc

le L

engt

h

Off

On

Set

poin

tTe

mpe

ratu

re

Not

e: T

ime

and

tem

pera

ture

is a

ppro

xim

ate

for

exam

ple

purp

oses

onl

y. A

ctua

l tim

es a

nd te

mpe

ratu

re r

espo

nse

will

var

y ac

cord

ing

to s

yste

m d

esig

n, r

oom

con

stru

ctio

n de

tails

, etc

.

Thermostat and Actuator OperationO

PE

RA

TIO

N

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Thermostat and Actuator Operation

The #56200 Series Actuators are non-motorized

and activated by an electric current. This

current heats a heating element in a wax fi lled

piston chamber that in turn drives, or moves,

the motor insert pin, as the wax warms up

and expands. Thus opening and closing the

manifold module or zone valve. The actuator has

a full close to full open time range of 1.5 to 6 minutes

(depending on the residual temperature of the heating element, and the

wax piston chamber from the previous cycle).

Working in conjunction with slow acting actuators, PWM thermostats

are essential for slow responding, high thermal mass systems. Slow

responding means there is a long delay from

when a temperature change is sensed by a

thermostat, and after it is turned ON. Likewise,

a high thermal mass system means that heat

continues being released for a long period of

time after a thermostat was turned down. If

an ON/OFF thermostat is used instead, cycles

of overheating and underheating will be

unavoidable. An ON/OFF thermostat turns ON only when the actual

temperature is below the desired set point. In a slow responding system,

the actual temperature can continue to dip even after the thermostat has

turned ON. This is because the heat initially applied to the system is being

used to stock up the thermal mass instead of warming up the space.

®

LinkHeat 21

StatLink® Rough-in Wiring (ELECT 1.8)

(C/W 4-WIRE THERMOSTAT TERMINATION AT MANIFOLDS

(i.e.. FOR MULTIPLE ZONING PER MAN I FOLD))

Low Voltage Wiring Only! (See ELECT 1.9 plus ELECT ______ for

corresponding sche mat ics)

OUTDOOR SENSOR:

2 wires from side of building (outside wall location; preferable

location to be on the same side of the building where the main

occupied rooms are and not near any windows, ventilation openings

or artifi cial heat sources!) back to mechanical room.

1

REMOTE INDOOR SENSOR (i.e. ROOM TEMPERATURE UNIT - RTU)

2 wires from a main occupied area back to the mechanical room.

(Location chosen should refl ect the area where the most solar gain

will occur).

Note: In some applications R.T.U. may be omitted or

substituted with multiple averaged room sensors where

a single main occupied area can not be chosen.

2

ROOM THERMOSTATS:

Standard 4-wire to be run from each zone back to the corresponding

manifold location

3

BASE MODULE:

2 wires for a 24V power source from each manifold location back to

the mechanical room. (Optional wiring: allow for 110V power source

to a 24V transformer at each manifold)

4

4 WIRE JUMPER:

4 wire to be run between each manifold location. This allows

for the transfer of both the clock module and pump/boiler relay

information from manifold to manifold. See note at bottom of page.

5

Note: from the last manifold location which has been

jumpered in parallel, an additional 2-wire must be

returned to the mechanical room for tie-in to the

#31355 controller “heat demand” contacts.

RO

UG

H-IN

22®

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StatLink® Rough-in Wiring (ELECT 1.9)R

OU

GH

-IN

®

LinkHeat 23

RO

UG

H-IN

42=

min

imum

18x

2 A

WG

Cab

le

= m

inim

um 1

8x4

AW

G C

able

(FA

S10

5)

StatLink® Rough-in Wiring (ELECT 1.9)

24®

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StatLink® Electrical Schematic

Application: Connecting one zone thermostat and actuators.

46443

24 Vac Pump Relay (shown) or

#31000 Series Control

“Heat Demand” Contacts

40226

SC

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60VA 24 Vac Class IITransformer

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LinkHeat 25

Heat Demand24Vac POWER24Vac NEUTRALSetback SignalSetback Signal

Plug for optional

expansion module

Optional: connect the setback terminal to the corresponding 1 or 2 terminal that is used by a timer thermostat.

Default and Suggested Alternate Color-coded Wiring Schemes

WireFAS105 (red jacket)

StatLink® default

Thermostat Wire

(white jacket)

LVT Thermostat

Wire

(brown jacket)

C green green green

R blue blue white

W red red red

black white black

SC

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SStatLink® Electrical Schematic

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Application: Under some circumstances, the StatLink® 40226 base

module may be short cycling the boiler and/or pump.

The 40226 dry contacts should be connected to either

a time delay relay or outdoor reset control to activate a

boiler and/or pump.

60VA 24 Vac Class IITransformer

46543

Third Party 24 Vac Time Delay Relay

(3 min delay suggested)

To Condensing Boiler

40226

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SC

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Optional Floor Warming Sensor

Default and Suggested Alternate Color-coded Wiring Schemes

WireFAS105 (red jacket)

StatLink® default

Thermostat Wire

(white jacket)

LVT Thermostat

Wire

(brown jacket)

C green green green

R blue blue white

W red red red

black white black

Heat Demand24Vac POWER24Vac NEUTRALSetback SignalSetback Signal

Plug for optional

expansion module

Optional: connect the setback terminal to the corresponding 1 or 2 terminal that is used by a timer thermostat.

28®

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StatLink® Electrical Schematic

Application: Connecting Multiple #40226 Base Modules together.

Dry

con

tact

s ar

e w

ired

in p

aral

lel.

To B

oile

r C

onta

cts

24 V

ac P

ump

Rel

ay

(sho

wn)

or

#310

00 S

erie

s C

ontr

ol“H

eat D

eman

d”

Con

tact

s

Set

back

sig

nal g

ener

ator

4664

3

4022

6

Max

. 4 a

ctua

tors

/zon

e.A

ctua

tors

can

be

doub

led

up o

n th

e te

rmin

als.

5620

0 S

erie

s A

ctua

tors

(max

. 12)

Hea

t D

eman

d24

Vac

PO

WE

R24

Vac

NE

UT

RA

LS

etb

ack

Sig

nal

Set

bac

k S

ign

al

4644

3

SC

HE

MA

TIC

S

60V

A 2

4 V

ac C

lass

II

Tran

sfor

mer

Set

back

sig

nal t

ie

betw

een

mod

ules

ca

n be

con

nect

ed

to a

ny z

one

incl

udin

g th

ose

with

ther

mos

tats

.

®

LinkHeat 29

No

te:

Whe

n us

ing

pola

rized

tr

ansf

orm

ers

the

line

volta

ge m

ust b

e th

e sa

me

phas

e.

4644

346

443

4022

6

60V

A 2

4 V

ac C

lass

II

Tran

sfor

mer

5620

0 S

erie

s A

ctua

tors

(max

. 12)

Hea

t D

eman

d24

Vac

PO

WE

R24

Vac

NE

UT

RA

LS

etb

ack

Sig

nal

Set

bac

k S

ign

al

SC

HE

MA

TIC


30®

LinkHeat

Electrical Schematic for the #31355 Injection Control

Ap

pli

cati

on

: In

ject

ion

mix

ing

co

ntr

ol a

ctiv

ati

ng

se

con

da

ry p

um

p f

or

the

low

te

mp

era

ture

ma

nif

old

cir

cuit

.

B

oile

r c/

w s

yste

m p

um

p (

P-1

) a

nd

pri

ma

ry p

um

p (

P-2

).

SC

HE

MA

TIC

S

®

LinkHeat 31

Electrical Schematic for the #31355 Injection Control

No

te:

If on

ly a

n in

door

or fl

oor

sen

sor

is u

sed

with

ou

t th

erm

ost

ats

o

r S

tatL

ink®

, th

en

po

we

r is

re

quire

d at

term

inal

s 1

&2.

No

te:

Th

is is

on

ly a

co

nce

pt

dra

win

g.

Th

e d

esi

gn

er

mu

st d

ete

rmin

e

wh

eth

er

this

ap

plic

ati

on

ap

plie

s to

th

e s

yste

m. D

esi

gn

mu

st c

om

ply

wit

h lo

cal c

od

e

req

uir

em

en

ts. N

ece

ssa

ry

eq

uip

me

nt

an

d o

the

r sa

fety

an

d

limit

de

vic

es

mu

st b

e a

dd

ed

.

SC

HE

MA

TIC

S

32®

LinkHeat

Electrical Schematic for the HeatLink® Mixing Control

Ap

pli

cati

on

: C

on

ne

ctin

g A

ctu

ato

rs w

ith

en

d s

wit

che

s to

th

e #

31

35

5 In

do

or-

Ou

tdo

or

Co

ntr

ol.

SC

HE

MA

TIC

S

®

LinkHeat 33

SC

HE

MA

TIC

SElectrical Schematic for the HeatLink® Mixing Control

34®

LinkHeat

HeatLink® Thermostat Wiring

He

atL

ink

® Th

erm

ost

at

Wir

ing

Ap

pli

cati

on

:A

ctu

ato

rs &

th

erm

ost

ats

(#

46

33

3, #

46

44

3, o

r #

46

54

3)

wit

h in

tern

al r

esi

sto

r fo

r h

ea

t a

nti

cip

ati

on

.

No

te:

Due

to th

eir

inhe

rent

tem

pera

ture

ov

ersh

oot,

and

long

lead

/lag

times

, st

anda

rd 2

wire

ther

mos

tats

are

not

re

com

men

ded

for

high

ther

mal

mas

s ra

dian

t fl o

or h

eatin

g sy

stem

s. (

see

page

s 18

-20

for

furt

her

expl

anat

ion.

)

eren

t tem

pera

ture

ong

lead

/lag

times

,th

erm

osta

ts a

re n

ot

or h

igh

ther

mal

mas

sat

ing

syst

ems.

(se

efu

rthe

r ex

plan

atio

n.)

SC

HE

MA

TIC

S

®

LinkHeat 35

No

te: ➊

End

Sw

itch

(ES

) w

ires

are

colo

r co

ded

“gre

en”.

Blu

e an

d br

own

wire

s ar

e fo

r co

nnec

tions

to th

e tr

ansf

orm

er,

and

W (

ther

mos

tat p

ower

out

put s

igna

l) co

nnec

tion

to th

e th

erm

osta

t.

➋ D

ue to

thei

r in

here

nt te

mpe

ratu

re

over

shoo

t, an

d lo

ng le

ad/la

g tim

es,

stan

dard

2 w

ire th

erm

osta

ts a

re n

ot

reco

mm

ende

d fo

r hi

gh th

erm

al m

ass

radi

ant fl

oor

hea

ting

syst

ems.

(se

e pa

ges

18-2

0 fo

r fu

rthe

r ex

plan

atio

n)

HeatLink® Thermostat WiringS

CH

EM

AT

ICS

He

atL

ink

® T

he

rmo

sta

t W

irin

g c

/w E

nd

Sw

itch

Tie

-in

to

Re

lay

Ap

pli

cati

on

: A

ctu

ato

rs c

/w e

nd

sw

itch

co

nta

cts

& t

he

rmo

sta

ts (

#4

63

33

, #4

64

43

, or

#4

65

43

) w

ith

co

nn

ect

ion

to

he

at

de

ma

nd

co

nta

cts

or

he

ati

ng

loa

d r

ela

y.

36®

LinkHeat

HeatLink® Timer Thermostat Wiring

He

atL

ink

® Dig

ita

l Tim

er

Th

erm

ost

at

(#4

66

43

) W

irin

gA

pp

lica

tio

n:

Act

ua

tors

c/w

en

d s

wit

ch c

on

tact

s &

th

erm

ost

ats

co

nn

ect

ing

to

he

at

de

ma

nd

co

nta

cts

or

he

ati

ng

loa

d

rela

y w

ith

se

tba

ck s

ign

al.

SC

HE

MA

TIC

S

®

LinkHeat 37

He

atL

ink

® Dig

ita

l H

ea

t/C

oo

l Tim

er

Th

erm

ost

at

Wir

ing

Ap

pli

cati

on

:A

ctu

ato

rs c

/w e

nd

sw

itch

co

nta

cts

& t

he

rmo

sta

ts c

on

ne

ctin

g t

o h

ea

tin

g, c

oo

ling

an

d f

an

re

lays

wit

h

setb

ack

sig

na

l.

HeatLink® Timer Thermostat WiringS

CH

EM

AT

ICS

38®

LinkHeat

HeatLink® Thermostat Wiring

HeatLink® Digital Heat/Cool Thermostat (#46673)

Interlock Wiring

Application: A single cooling zone can often encompass multiple

radiant heating zones. The 46673 Digital Heat/Cool

Timer Thermostat will turn off heating to its zone

when cooling is on. However, all the other heating

thermostats in the cooling zone may still call for heat.

This means that the heating system and cooling

system could be active at the same time and work

against each other.

SC

HE

MA

TIC

S

Option 1 - Most Comfort:

Heating and cooling systems work independently (and possibly

simultaneously, except for the zone controlled by the Heat/Cool Timer

Thermostat). This option would be used in fl oor warming applications.

Advantages: Straight forward wiring; no interlock

Disadvantages: Except for the zone controlled by the Heat/Cool Timer

Thermostat, the heating and cooling systems may work against each

other depending on thermostat settings and zone environment, resulting

in extra energy usage.

®

LinkHeat 39

SC

HE

MA

TIC

SHeatLink® Thermostat Wiring

Option 2 - Interlock:

When the Heat/Cool Timer Thermostat calls for cooling, the relay will

interrupt the heating system’s connection to the boiler. This will prevent

the boiler from fi ring.

Advantages: Heating and cooling systems won’t be active at the

same time.

Disadvantages: Zones that may need heat won’t receive any.

40®

LinkHeat

SC

HE

MA

TIC


Option 3 - Interlock with Outdoor Reset Control:

If the outdoor temperature is warm enough, the heating system will be

in Warm Weather Shut Down (WWSD) mode. When the Heat/Cool Timer

Thermostat calls for cooling, the relay will interrupt the heating system’s

connection to the boiler. If the heating system isn’t in Warm Weather Shut

Down (WWSD), this will prevent the boiler from fi ring. The heating system

pumps will still run, so any heating zones that may be calling for heat will

still receive any residual heat in the system.

Advantages: Outdoor temperature feedback

Disadvantages: Outdoor Reset Control required

pumps will still run, so any heating zones that may be calling for heat will

till receive any residual heat in the system.

Advantages: Outdoor temperature feedback

Disadvantages: Outdoor Reset Control required

®

LinkHeat 41

SC

HE

MA

TIC


42®

LinkHeat

NotesN

OT

ES

L3710 © HeatLink Group Inc.Printed in USA

May

11

, 20

11

HeatLink and StatLink are either registered trademarks or trademarks of HeatLink Group Inc.

www.heatlinkgroup.com

®

Heat Link

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