© 2016 tekmar 670_A - 10/16

670_A10/16

Snow Melting Replaces: New

WiFi Snow Melting Control 670

Application Brochure

Application Page

Dedicated Boiler 2

Dedicated Boiler and Mixing Valve 4

Shared Boiler and Heat Exchanger 6

Shared Boiler and Mixing Valve with Optional Tandem Sensors 8

Shared Boiler and Injection Mixing 10

Modulating Steam Valve 12

Electric Cable 14

Multiple Zones with Multiple Boilers and Shared Mixing Valve 16

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

The WiFi Snow Melting Control 670 operates hydronic and electric heating equipment designed to melt snow and/or ice from roads and walkway surfaces. The control works with the tekmar Snow/Ice Sensor 090 or Snow Sensor 095 to automatically detect snow or ice and operates a single boiler, steam valve, or electric cable to supply heat to the slab. Boiler return protection is provided to non-condensing boilers using a mixing valve or variable speed injection mixing pump. The tekmar Connect mobile application allows for remote operation and monitoring of the snow melting system from anywhere in the world.

2 of 20© 2016 tekmar 670_A - 10/16

Dedicated Boiler A670-1 Mechanical

DescriptionThe WiFi Snow Melting Control 670 operates a boiler that is dedicated for the snow melting system. The system is piped in primary-secondary to allow constant flow rates through the low-mass boiler and filled with glycol to prevent freezing.• The system pump operates continuously when heating the slab during melting/idling/storm operation.• The boiler pump cycles on and off together with the boiler.• The slab temperature is controlled by modulating the boiler firing rate or cycling the boiler on and off.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.• Optional slab protection limits the temperature differential between the boiler supply and slab.

The system operation is dependent on sensor selection, as listed in the table below.

Application SettingsSetting Name Value

Application Mode Boiler

Sensor options Operation methods

Sensor Sensor Model(s)Auto Start/Auto Stop

Auto Start/Timed Stop

Manual Start/Timed Stop

Slab TemperatureControl

S1 Automatic Snow/Ice Sensor 090 or 094 • – • •

S2 Aerial Snow Sensor 095 – • • –

S3 Slab Sensor 072 or 073 – – • •

S2+S3 Aerial Snow Sensor 095 and Slab Sensor 072/073 – • • •

B1 = Modulating BoilerP1 = System PumpP2 = Boiler PumpS1 = Snow/Ice Sensor 090 or 094S2 = Snow Sensor 095S3 = Slab Sensor 072 or 073S4 = Outdoor Sensor 070S5 = Boiler Supply Sensor 082

Legend

S4

670

Snow/Ice Sensor Options

B1

P2

P1S5

S2

S1

S3

© 2016 tekmar 670_A - 10/163 of 20

T T–+

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

BrnSlab

BlkCom YelBluRed

SnowSensor

095

S4

B1

LN

P1

S5S1

S2 S3

Dedicated Boiler A670-1 Electrical

4 of 20© 2016 tekmar 670_A - 10/16

Dedicated Boiler and Mixing A670-2 Mechanical

Application SettingsSetting Name Value

Application Mode Boiler+Mix

B1 = Modulating BoilerM1 = Actuating Motor 741P1 = System PumpP2 = Boiler PumpS1 = Snow/Ice Sensor 090 or 094S2 = Snow Sensor 095S3 = Slab Sensor 072 or 073S4 = Outdoor Sensor 070S5 = Boiler Supply Sensor 082S6 = Mix Supply Sensor 082X1 = Transformer 009V1 = 3-Way Mixing Valve 710 through 714

Legend

670

Snow/Ice Sensor Options

S4

S5 S6P1P2 V1

M1B1

S1

S2

S3

DescriptionThe WiFi Snow Melting Control 670 operates a boiler and a mixing valve that is dedicated for the snow melting system. The boiler is piped in primary-secondary to the system to allow constant flow rates through the low-mass boiler. The entire system is filled with glycol to prevent freezing.• The system and boiler pumps operate continuously when heating the slab during melting/idling/storm operation.• The mixing valve position is adjusted to 100% open unless providing boiler return protection.• The slab temperature is controlled by modulating the boiler firing rate or cycling the boiler on and off.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.• Optional slab protection limits the temperature differential between the boiler supply and slab.

The system operation is dependent on sensor selection, as listed in the table below.

Sensor options Operation methods

Sensor Sensor Model(s)Auto Start/Auto Stop

Auto Start/Timed Stop

Manual Start/Timed Stop

Slab TemperatureControl

S1 Automatic Snow/Ice Sensor 090 or 094 • – • •

S2 Aerial Snow Sensor 095 – • • –

S3 Slab Sensor 072 or 073 – – • •

S2+S3 Aerial Snow Sensor 095 and Slab Sensor 072/073 – • • •

© 2016 tekmar 670_A - 10/165 of 20

Com

Close

Open

T T–+

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

BrnSlab

BlkCom YelBluRed

SnowSensor

095

S1

S2 S3

M1

V1

X1

LN

S4

S5

P2 P1

S6

Dedicated Boiler and Mixing A670-2 Electrical

6 of 20© 2016 tekmar 670_A - 10/16

Shared Boiler and Heat Exchanger A670-3 Mechanical

Application SettingsSetting Name Value

Application Mode PWM Zone

Boiler Type Enable

A1 = Normally Closed Freeze Protection AquastatB1 = Boiler EnableHX = Heat ExchangerP1 = System PumpP2 = On/Off Heat Exchanger PumpS1 = Snow/Ice Sensor 090 or 094S2 = Snow Sensor 095S3 = Slab Sensor 072 or 073S4 = Outdoor Sensor 070

Legend

670

Snow/Ice Sensor Options

S4

P2

A1

P1

S1

S2

S3

HX

DescriptionThe WiFi Snow Melting Control 670 operates a snow melting zone warmed from a heat source that is shared with other loads in a building. A heat exchanger isolates the glycol-filled snow melting system loop from the water-filled main heating system.• The system pump operates continuously when heating the slab during melting/idling/storm operation.• The slab temperature is controlled by cycling the heat exchanger pump and the boiler enable on and off.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.• A normally-closed aquastat protects the heat exchanger from freezing by shutting off power to the system pump.

The system operation is dependent on sensor selection, as listed in the table below.Sensor options Operation methods

Sensor Sensor Model(s)Auto Start/Auto Stop

Auto Start/Timed Stop

Manual Start/Timed Stop

Slab TemperatureControl

S1 Automatic Snow/Ice Sensor 090 or 094 • – • •

S2 Aerial Snow Sensor 095 – • • –

S3 Slab Sensor 072 or 073 – – • •

S2+S3 Aerial Snow Sensor 095 and Slab Sensor 072/073 – • • •

© 2016 tekmar 670_A - 10/167 of 20

BrnSlab

BlkCom YelBluRed

SnowSensor

095

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

S1

S3S2

S4

LN

B1

P2

A1

P1

Shared Boiler and Heat Exchanger A670-3 Electrical

8 of 20© 2016 tekmar 670_A - 10/16

Shared Boiler and Mixing Valve with Optional Tandem Sensors A670-4 Mechanical

670 Application SettingsSetting Name Value

Application Mode Mixing

Mixing Type Floating

Boiler Type Enable

Optional 654 Application SettingsSetting Name Value

Application Mode 090

A1 = Normally Closed Freeze Protection AquastatB1 = Boiler EnableHX = Heat ExchangerM1 = Actuating Motor 741P1 = System PumpP2 = Heat Exchanger PumpS1a, S1b = Snow/Ice Sensor 090 or 094S4 = Outdoor Sensor 070S5 = Boiler Return Sensor 082S6 = Mix Supply Sensor 082V1 = 3-Way Mixing Valve 710 through 714X1 = Transformer 009

Legend

670 Optional654S4

S5

P2 P1S6

V1HX

M1S1a

S1bA1

DescriptionThe WiFi Snow Melting Control 670 operates a snow melting zone warmed from a heat source that is shared with other loads in a building. The system uses a mixing valve to regulate the water temperature and a heat exchanger isolates the glycol-filled snow melting system loop from the water-filled main heating system. The 670 is paired with a Snow Melting Control 654 to provide Tandem Snow/Ice Detection using a Snow/Ice Sensor 090 or 094. Tandem sensors double the detection area to provide increased reliability and redundancy in case of sensor failure. • The system pump operates continuously when heating the slab during melting/idling/storm operation.• The slab temperature is controlled by adjusting the mixing valve position.• When the mixing valve is open, the heat exchanger pump and the boiler enable are on.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.• A normally-closed aquastat protects the heat exchanger from freezing by shutting off power to the system pump.• Either snow/ice sensor will start the melting operation if snow or ice is detected. Both sensors must be dry in order to

stop melting.

© 2016 tekmar 670_A - 10/169 of 20

Com

Close

Open

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

SlabBrn

+ModtN4Aux Ht R C

BretOut/

Com–BlkYel Blu Red Sup

No Power

X1

LN

S1aS1bS4

B1

P2 P1

A1

S6

S5

M1

V1

Shared Boiler and Mixing Valve with Optional Tandem Sensors A670-4 Electrical

654 670

10 of 20© 2016 tekmar 670_A - 10/16

Shared Boiler and Mixing Injection Pump A670-5 Mechanical

Application SettingsSetting Name Value

Application Mode Mixing

Mixing Type Injection

Boiler Type Enable

A1 = Normally Closed Freeze Protection AquastatB1 = Boiler EnableHX = Heat ExchangerP1 = System PumpP2 = Heat Exchanger PumpP3 = Variable Speed Injection Mixing PumpS1 = Snow/Ice Sensor 090 or 094S2 = Snow Sensor 095S3 = Slab Sensor 072 or 073S4 = Outdoor Sensor 070S5 = Boiler Return Sensor 082S6 = Mix Supply Sensor 082V1 = Globe Valve

Legend

Sensor options Operation methods

Sensor Sensor Model(s)Auto Start/Auto Stop

Auto Start/Timed Stop

Manual Start/Timed Stop

Slab TemperatureControl

S1 Automatic Snow/Ice Sensor 090 or 094 • – • •

S2 Aerial Snow Sensor 095 – • • –

S3 Slab Sensor 072 or 073 – – • •

S2+S3 Aerial Snow Sensor 095 and Slab Sensor 072/073 – • • •

670

Snow/Ice Sensor Options

S4

S5

P2 P1 S6P3HX

S1

S2

S3A1

V1

DescriptionThe WiFi Snow Melting Control 670 operates a snow melting zone warmed from a heat source that is shared with other loads in a building. The system uses a variable speed injection pump to regulate the water temperature and a heat exchanger isolates the glycol-filled snow melting system loop from the water-filled main heating system.• The system pump operates continuously when heating the slab during melting/idling/storm operation.• The slab temperature is controlled by adjusting the speed of the variable speed injection pump.• When the variable speed injection pump is on, the heat exchanger pump and the boiler enable are on.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.• A normally-closed aquastat protects the heat exchanger from freezing by shutting off power to the system pump.

The system operation is dependent on sensor selection, as listed in the table below.

© 2016 tekmar 670_A - 10/1611 of 20

Shared Boiler and Mixing Injection Pump A670-5 Electrical

BrnSlab

BlkCom YelBluRed

SnowSensor

095

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

LN

S1

S2 S3

S4

B1

P2 P1

A1

S5

S6

P3

12 of 20© 2016 tekmar 670_A - 10/16

Modulating Steam Valve A670-6 Mechanical

Application SettingsSetting Name Value

Application Mode Mixing

Mixing Type 0-10 V or 4-20 mA

Boiler Type Enable

B1 = Boiler EnableHX = Steam-to-Glycol Heat ExchangerM1 = Modulating Steam ValveP1 = System PumpS1 = Snow/Ice Sensor 090 or 094S2 = Snow Sensor 095S3 = Slab Sensor 072 or 073S4 = Outdoor Sensor 070S5 = Mix Supply Sensor 082

Legend

670

Snow/Ice Sensor Options

S4

S5P1HX

M1

S1

S2

S3

DescriptionThe WiFi Snow Melting Control 670 operates a modulating steam valve and a steam-to-water heat exchanger to heat a glycol-filled snow melting system.• The system pump operates continuously when heating the slab during melting/idling/storm operation.• The slab temperature is controlled by adjusting the modulating steam valve position.• The boiler relay is closed while the modulating steam valve is open. This provides a signal to fire the steam boiler.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.

The system operation is dependent on sensor selection, as listed in the table below.

Sensor options Operation methods

Sensor Sensor Model(s)Auto Start/Auto Stop

Auto Start/Timed Stop

Manual Start/Timed Stop

Slab TemperatureControl

S1 Automatic Snow/Ice Sensor 090 or 094 • – • •

S2 Aerial Snow Sensor 095 – • • –

S3 Slab Sensor 072 or 073 – – • •

S2+S3 Aerial Snow Sensor 095 and Slab Sensor 072/073 – • • •

© 2016 tekmar 670_A - 10/1613 of 20

Modulating Steam Valve A670-6 Electrical

+ –

BrnSlab

BlkCom YelBluRed

SnowSensor

095

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

LN

S1

S2 S3

S4

B1

P1

S5

M1

14 of 20© 2016 tekmar 670_A - 10/16

Electric Cable A680-7 Mechanical

Application SettingsSetting Name Value

Application Mode Electric

670

E1 = 115 or 230 V (ac) Electric Power SupplyH1 = Electric Heating CableR1 = Electric Relay ContactorS1 = Snow/Ice Sensor 090 or 094S2 = Snow Sensor 095S3 = Slab Sensor 072 or 073S4 = Outdoor Sensor 070

Legend

Snow/Ice Sensor Options

S4

E1 R1

H1

S1

S2

S3

DescriptionThe WiFi Snow Melting Control 670 operates an electric cable snow melting system.• The electric contactor is cycled on and off based on the slab load.

The system operation is dependent on sensor selection, as listed in the table below.

Sensor options Operation methods

Sensor Sensor Model(s)Auto Start/Auto Stop

Auto Start/Timed Stop

Manual Start/Timed Stop

Slab TemperatureControl

S1 Automatic Snow/Ice Sensor 090 or 094 • – • •

S2 Aerial Snow Sensor 095 – • • –

S3 Slab Sensor 072 or 073 – – • •

S2+S3 Aerial Snow Sensor 095 and Slab Sensor 072/073 – • • •

© 2016 tekmar 670_A - 10/1615 of 20

Electric Cable A670-7 Electrical

R W

BrnSlab

BlkCom YelBluRed

SnowSensor

095

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

LN

S1

S2 S3

S4

R1

16 of 20© 2016 tekmar 670_A - 10/16

Multiple Zones with Multiple Boilers and Shared Mixing Valve A670-8 Mechanical

400

V1

B1

423 & 346

444

B2 M1

S4

S5S6

tN4 Mix 1 Bus

DescriptionThe system has two snow melting zones heated by two boilers. The water temperature is regulated by a shared mixing valve for the two snow melting zones. The boilers and mixing valve are operated by a Universal Reset Module 423, Power Manager 346 and Mixing Expansion Module 444. Each snow melting zone is operated by a WiFi Snow Melting Control 670.• The slab target is determined by the melting/idling/storm setpoint and by the measured outdoor air temperature.• The zone pump cycles on/off when heating the slab during melting/idling/storm operation.• When the zone is heated, the 670 communicates to the 423 and 444 to operate the mixing valve and fire the boilers.• The 423 and 444 close the mixing valve to provide boiler return protection when the boiler supply temperature falls below

the 423 boiler minimum setting.

The system operation is dependent on sensor selection, as listed in the table below.Sensor options Operation methods

Sensor Sensor Model(s)Auto Start/Auto Stop

Auto Start/Timed Stop

Manual Start/Timed Stop

Slab TemperatureControl

S1 Automatic Snow/Ice Sensor 090 or 094 • – • •

S2 Aerial Snow Sensor 095 – • • –

S3 Slab Sensor 072 or 073 – – • •

S2+S3 Aerial Snow Sensor 095 and Slab Sensor 072/073 – • • •

© 2016 tekmar 670_A - 10/1617 of 20

A670-8 Mechanical

B1, B2 = Modulating BoilersM1 = Actuator Motor 741P1 = Zone 1 PumpP2 = Zone 2 PumpS1a = Zone 1 Snow/Ice Sensor 090 or 094S1b = Zone 2 Snow/Ice Sensor 090 or 094S2a = Zone 1 Snow Sensor 095S2b = Zone 2 Snow Sensor 095

S3a = Zone 1 Slab Sensor 072 or 073S3b = Zone 2 Slab Sensor 072 or 073S4 = Outdoor Sensor 070S5 = 423 Boiler Supply Sensor 082S6 = 444 Mix Supply Sensor 082V1 = 3-Way Mixing Valve 710 through 714X1 = Transformer 009

Legend

670 Application SettingsSetting Name Value

Application Mode PWM Zone

Outdoor Sensor tekmarNet

Boiler Type Control

400

S1a S1b

S2a S2b

S3a S3b

P1 P2

670 670

tN4 Mix 1 Bus

Zone #1 Zone #2

Zone #1 Snow/Ice Sensor Options

Zone #2 Snow/Ice Sensor Options

18 of 20© 2016 tekmar 670_A - 10/16

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up50 51 52 53

Stage1/ Stage 2/ Boil Enbl Setp Enbl

75 76 77 78

Demand DemandDHW Setpoint

54 55

DHW Primary

10 Amax79 80 81 82

NPump NPump

tN4Made in Canada

8 VA 1 VA

Boil Sens Sup / RetH7010A

Off / DHW SensorOff / tekmar StagerBoilers On-Off / ModOff / Rotation

Meets Class B: CanadianICES & FCC Part 15

PoweredOutputs24 V (ac)

Universal Reset Module 423

Item

Menu

tektra 1006-01

Demands: 20 - 260 V (ac)Relay Rating: 115 V (ac) 5 A

71 72 73 74DHW 24 V (ac)

/

57 58 59 60 6156

C

C

tN4Mod2 (dc)Mod1 (dc)

6564

C3C1+ –

C

+ – tN4

62 63

C2 tN4 tN4

66 67

DHW ComBoiler

68 69

Boil Com

70

Out

Do not apply power

Test

1 2 3

Vlv R

No Power

Mixing Expansion Module 444Variable Speed / Floating Action / Modulating

Made in CanadaSignal wiring

must be rated atleast 300V / 90°CCu

t for

mA

outp

ut

5R

6R

41tN4

7Mod

+

8Com

9Mix

Power ClsOpnSysPmp

2C

3R

No Power

Date

Cod

e

1

tektra 1019-01

1

Power Manager 346

For product literature:www.tekmarcontrols.com

Boiler Bus 0 Demand Power

Aux Pump 1

Aux Pump 2

Aux Pump 3

tN4

Bus 1 Demand

Bus 2 Demand

Bus 3 Demand

Meets Class B: CanadianICES & FCC Part 15

Caution! Disconnect AllPower before Opening

24 V (ac) Fuse: T2.5 A 250 V

H701

1A

Relay Power27 28

NLAux Pump 229 30

NPmpAux Pump 331 32

NPmp

For product instructions, see brochureInput Power: 115 V (ac) ±10% 60 Hz, 12 AAll Loads Using Input Power: 11.5 ARelay Ratings: 115 V (ac) 5 ARelay Power: 115 V (ac) ±10% 60 Hz, 10 ADemands: 20 to 260 V (ac) 2 VA

Supply wires 90°C/105°CSee manual

Boil Bus 0

16 17Demand

Bus 3 Bus 2

18Dem DemDem

19

Bus 1

20 21Demand

227

tN4

5 6

tN4 C C

2Boil 0

11

tN4

9 102C C

15

tN4

13 143

ComAuxPmp1

4

RR R R

3

AuxPmp2

8

AuxPmp3

12Limited power available, see wiring brochure

Room Occ

Room UnOcc

0Boil

1

2

3 1

3

11

9

7

5

12

10

8

6

4

2Sch

edul

eM

embe

r

Input Power23 24

NLAux Pump 125 26

NPmp

RC

Com

Open

Close

Multiple Zones with Multiple Boilers and Shared Mixing Valve A670-8 Electrical

B1, B2 = Modulating BoilersM1 = Actuator Motor 741P1 = Zone 1 PumpP2 = Zone 2 PumpS1a = Zone 1 Snow/Ice Sensor 090 or 094S1b = Zone 2 Snow/Ice Sensor 090 or 094S2a = Zone 1 Snow Sensor 095S2b = Zone 2 Snow Sensor 095

S3a = Zone 1 Slab Sensor 072 or 073S3b = Zone 2 Slab Sensor 072 or 073S4 = Outdoor Sensor 070S5 = 423 Boiler Supply Sensor 082S6 = 444 Mix Supply Sensor 082V1 = 3-Way Mixing Valve 710 through 714X1 = Transformer 009

Legend

S4S5

S6

B2

B1

L N

X1

M1 V1

© 2016 tekmar 670_A - 10/1619 of 20

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

20Mod Boiler 19

WiFi Snow Melting Control 670Boiler & Mixing / Electric

Power 115 V (ac) ±10%, 60 Hz, 20 VARelays 230 V (ac) 5 A 1/3 hpVar. Pump 230 V (ac) 2.4 A

1084-01Designed and assembled in Canada

Date

Cod

eH

2055

A

1 kΩ max 1 kΩ max

Opn3

Var

2

–Mix V/mA1

+Pwr4

MixCls5

Blu8

Yel9

Brn/10

SlabMan

11

MeltC

12Blk/7

ComRed6

Boiler 121

Stage 1Boiler 1Stage 2

HeatRelay

SystemPump–

22

+

23 24 25Do Not Apply Power

Mix15

SupCom16

Boil17

Out18

Com14

tN413 282726

Power29

L

30

N

For product literature:Pour la documentation du produit:Para la literatura del producto:tekmarControls.com

Disconnect all power before opening.WARNING

Coupez l'alimentation avant l'ouverture.ATTENTION

Desconecte la electricidad antes de abrir.ADVERTENCIA

Signal wiring must be rated at least 300 V.Le câblage du signal doit être d'une capacité d'au moins 300 V.Cableado de señal debe tener unacalificación mínima de 300 V.

Contains WiFi transceiver:FCC ID: Z64-CC3100M0DR1, IC: 4511-CC3100M0DR1Meets Class B: FCC Part 15B, ICES-003

Manual Melt

Time Left- - : - - hrs

Outdoor32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up50 51 52 53

Stage1/ Stage 2/ Boil Enbl Setp Enbl

75 76 77 78

Demand DemandDHW Setpoint

54 55

DHW Primary

10 Amax79 80 81 82

NPump NPump

tN4Made in Canada

8 VA 1 VA

Boil Sens Sup / Ret

H7010A

Off / DHW SensorOff / tekmar StagerBoilers On-Off / ModOff / Rotation

Meets Class B: CanadianICES & FCC Part 15

PoweredOutputs24 V (ac)

Universal Reset Module 423

Item

Menu

tektra 1006-01

Demands: 20 - 260 V (ac)Relay Rating: 115 V (ac) 5 A

71 72 73 74DHW 24 V (ac)

/

57 58 59 60 6156

C

C

tN4Mod2 (dc)Mod1 (dc)

6564

C3C1+ –

C

+ – tN4

62 63

C2 tN4 tN4

66 67

DHW ComBoiler

68 69

Boil Com

70

Out

Do not apply power

Test

1 2 3

Vlv R

No Power

Mixing Expansion Module 444Variable Speed / Floating Action / Modulating

Made in CanadaSignal wiring

must be rated atleast 300V / 90°CCu

t for

mA

outp

ut

5R

6R

41tN4

7Mod

+

8Com

9Mix

Power ClsOpnSysPmp

2C

3R

No Power

Date

Cod

e

1

tektra 1019-01

1

Power Manager 346

For product literature:www.tekmarcontrols.com

Boiler Bus 0 Demand Power

Aux Pump 1

Aux Pump 2

Aux Pump 3

tN4

Bus 1 Demand

Bus 2 Demand

Bus 3 Demand

Meets Class B: CanadianICES & FCC Part 15

Caution! Disconnect AllPower before Opening

24 V (ac) Fuse: T2.5 A 250 V

H701

1A

Relay Power27 28

NLAux Pump 229 30

NPmpAux Pump 331 32

NPmp

For product instructions, see brochureInput Power: 115 V (ac) ±10% 60 Hz, 12 AAll Loads Using Input Power: 11.5 ARelay Ratings: 115 V (ac) 5 ARelay Power: 115 V (ac) ±10% 60 Hz, 10 ADemands: 20 to 260 V (ac) 2 VA

Supply wires 90°C/105°CSee manual

Boil Bus 0

16 17Demand

Bus 3 Bus 2

18Dem DemDem

19

Bus 1

20 21Demand

227

tN4

5 6

tN4 C C

2Boil 0

11

tN4

9 102C C

15

tN4

13 143

ComAuxPmp1

4

RR R R

3

AuxPmp2

8

AuxPmp3

12Limited power available, see wiring brochure

Room Occ

Room UnOcc

0Boil

1

2

3 1

3

11

9

7

5

12

10

8

6

4

2Sch

edul

eM

embe

r

Input Power23 24

NLAux Pump 125 26

NPmp

RC

Com

Open

Close

A670-8 Electrical670 Application SettingsSetting Name Value

Application Mode PWM Zone

Outdoor Sensor tekmarNet

Boiler Type Control

S1a

S1b

P1

P2

L

L

N

N

670_A - 10/16 20 of 20 © 2016 tekmar

Tel: (250) 545-7749 • Fax: (250) 984-0815 tekmarControls.com

All specifications are subject to change without notice

Specifications

The following are the recommended specifications for the WiFi Snow Melting Control 670.• The control shall communicate with the Internet Cloud to provide remote starting, stopping and monitoring through an Android

or Apple iOS mobile application or through a web browser.• The control shall have the ability to use a snow/ice sensor in order to automatically detect snow or ice and begin operation

of the system. The system shall continue to run until the sensor is dry or the control is manually stopped.• The control shall communicate with an Internet weather service to determine the local snow fall forecast and automatically

pre-heat the slab for an adjustable timed duration.• The control shall have the ability to be manually started with an adjustable running time that counts down and automatically

stops the system.• The control shall not operate the system to provide heat to the snow melting zones when it enters into either a Warm Weather

Shut Down (WWSD) or a Cold Weather Cut Off (CWCO) mode.• The system water temperature shall be based on the outdoor temperature and feedback from sensors located in the snow

melting slabs.• The control shall have the option to mix the supply water temperature using a mixing valve with a floating action, 0-10 V (dc)

or a 4-20 mA actuator motor, or using a variable-speed injection mixing pump.• The control shall have an adjustable minimum return water temperature setting to help prevent condensation of flue gases

and subsequent corrosion and blockage of the boiler’s heat exchanger and chimney.• The control shall have the ability to limit the amount of cool water being returned to the boiler through the mixing device in

order to prevent low boiler operating temperatures and flue gas condensation.• The control shall have the ability to directly control the supply temperature of a modulating boiler, a one or two-stage boiler,

or to send a boiler enable signal to another boiler operating control to allow for a staging control to be connected.• The control shall have the option of an automatic differential calculation for the operation of one or two boiler stages in order

to prevent short cycling.• The control shall use proportional, integral and derivative (PID) logic when modulating or staging boiler stages.• The control shall have the option to limit the heat up rate of the slab to help prevent cracking the concrete.• The control shall have two separate lockable access levels to limit the number of adjustments available to various users.• The control shall have a manual override that allows each output to be manually turned on or off.• The control shall continuously monitor its temperature sensors and provide an error message upon a control or sensor failure.• The control shall record and display boiler and pump running hours and minimum and maximum temperatures depending

on the access level that has been selected.• During extended periods of inactivity, the pumps and valves that are operated by the control shall be periodically exercised

to prevent seizure during long idle periods.

This Application Brochure is not intended to provide full installation instructions and safety information. In order to avoid property damage or injury, please refer to the complete installation manual and product safety information provided with the product.