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®
Heat Link
Technical Guide
®
LinkStat
Third Version, May 2011
®
LinkHeat 3
ST
AT
LIN
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
4®
LinkHeat
FE
AT
UR
ES
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.)
®
LinkHeat 5
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.
FE
AT
UR
ES
StatLink® Features
6®
LinkHeat
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
ST
AT
LIN
K S
YS
TE
M
**Max. recommended, 12 actuators per module.
®
LinkHeat 7
ST
AT
LIN
K S
YS
TE
M
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
8®
LinkHeat
TH
ER
MO
ST
AT
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
®
LinkHeat 9
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
ER
MO
ST
AT
SHeatLink® Electronic Thermostat #46443
10®
LinkHeat
TH
ER
MO
ST
AT
SHeatLink® Digital Thermostat #46543
3-1/8" (80 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
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
Temperature Sensor: 10kΩ NTC thermistor
Output (Triac): 15W
Protection Class: IP 30
®
LinkHeat 11
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
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: 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
TH
ER
MO
ST
AT
S
12®
LinkHeat
TH
ER
MO
ST
AT
SHeatLink® Digital Timer Thermostat #46643
5" (125 mm)
3-3
/8"
(86
mm
)
Depth: 1-3/8" (35 mm)
Specifi cations:
Operating Voltage: 24V
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
Temperature Sensor: 10kΩ NTC thermistor
Output (Triac): 15W
Protection Class: IP 30
®
LinkHeat 13
TH
ER
MO
ST
AT
SHeatLink® Digital Timer Thermostat #46643
Features:4 wire PI fully digital electronic thermostat with 7 day timer
• Proportional integral temperature regulation
• Fully menu driven
• 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
Power: 24Vac (no battery)
Backup: programs forever
clock for 1 day
Contacts: 3+1 wire
C (power) - 2 terminals for easy direct connection of
actuator
R (power)
W (heat demand via triac [silent operation])
(setback signal to StatLink [optional])
NTC (optional external sensor)
Regulation: Pulse width modulation (PWM) with proportional
integral (PI) logic.
Adjustable characteristics for system optimization
(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.
Optional pump exercise functionality
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
Display: Temperature in ˚C or ˚F
Large display showing current temperature and time.
Graphic program display
Setpoint display with push of a button.
Shows: mode of operation; call for heat; active
setback program
14®
LinkHeat®
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
Temperature Sensor: 10kΩ NTC thermistor
Heating Output (triac): 15W
Cooling Output (relay): 100W
Protection class: IP 30
TH
ER
MO
ST
AT
S
®
LinkHeat 15®
LinkHeat
TH
ER
MO
ST
AT
SHeatLink® Digital Heat/Cool Timer Thermostat #46673
Features:4+3 wire PI fully digital electronic heat/cool thermostat with 7 day timer
• Proportional integral temperature regulation
• Fully menu driven
• 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.
Power: 24Vac (no battery)
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)
W (heat demand via triac [silent operation])
Y (cooling demand via relay)
(setback signal to StatLink [optional])
NTC (optional external sensor)
Regulation: Pulse width modulation (PWM) with proportional
integral (PI) logic.
Adjustable characteristics for system optimization
(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
Optional pump exercise functionality
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
Display: Temperature in ˚C or ˚F
Large display showing current temperature and time.
Setpoint display with push of a button.
Shows mode of operation; call for heat, cool and fan;
active setback program.
16®
LinkHeat
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
DU
LE
S
®
LinkHeat 17
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
DU
LE
S
18®
LinkHeat
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.
OP
ER
AT
ION
®
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
20®
LinkHeat
OP
ER
AT
ION
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®
LinkHeat
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®
LinkHeat
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
HE
MA
TIC
S
60VA 24 Vac Class IITransformer
®
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
HE
MA
TIC
SStatLink® Electrical Schematic
26®
LinkHeat
SC
HE
MA
TIC
SStatLink® Electrical Schematic
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
®
LinkHeat 27
SC
HE
MA
TIC
SStatLink® Electrical Schematic
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®
LinkHeat
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
SStatLink® Electrical Schematic
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
SHeatLink® Thermostat Wiring
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
SHeatLink® Thermostat Wiring
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
Recommended