Application Guide

ManualsBrandsTekmar ManualsHeating SuppliesWiFi Snow Melting Control 671 - Pulse Width Modulation

A - 08/19

671

08/19

Snow Melting

Replaces: New

WiFi Snow Melting Control 671

Application Brochure

Application Page

Dedicated Boiler 2

Shared Boiler and Heat Exchanger 4

On/Off Steam Valve 6

Electric Cable 8

Two Zones with Common Mixing 10

WiFi Snow Melting Control 671

Pulse Width Modulation

Power

Relays

1084-02

Designed and assembled in Canada

Date Code

H2058A

Blu

Yel

Brn/

Slab

Man

Melt

Blk/

Com

Red

Boiler Heat

Relay

System

Pump

11 12 13

Do Not Apply Power

Out

Com

tN4

8161514

Power

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 una

caliﬁcación mínima de 300 V.

Contains WiFi transceiver:

FCC ID: Z64-CC3100M0DR1

Meets FCC Part 15B

IC: 4511-CC3100M0DR1

Meets CAN ICES-3 (B)/NMB-3(B)

115 V (ac) ±10%, 60 Hz, 20 VA

230 V (ac) 5 A 1/3 hp

This is a hole

Manual Melt

Time Left

- - : - - hrs

Outdoor

32 °F

Settings Status

System is Melting

Stop

10:30 AM

Warming Up

The WiFi Snow Melting Control 671 operates hydronic and electric heating equipment designed to melt snow and/or ice from

roads and walkways surfaces. The control works with 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.

Summary of content (16 pages)

PAGE 1
Application Brochure 671_A WiFi Snow Melting Control 671 08/19 Snow Melting Replaces: New The WiFi Snow Melting Control 671 operates hydronic and electric heating equipment designed to melt snow and/or ice from roads and walkways surfaces. The control works with 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.
PAGE 2
Dedicated Boiler A671-1 Mechanical Description The WiFi Snow Melting Control 671 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.
PAGE 3
Dedicated Boiler A671-1 Electrical For product literature: Pour la documentation du produit: Para la literatura del producto: tekmarControls.
PAGE 4
Shared Boiler and Heat Exchanger A671-2 Mechanical Description The WiFi Snow Melting Control 671 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 boiler on and off.
PAGE 5
Shared Boiler and Heat Exchanger A671-2 Electrical For product literature: Pour la documentation du produit: Para la literatura del producto: tekmarControls.
PAGE 6
On/Off Steam Valve A671-3 Mechanical Description The WiFi Snow Melting Control 671 operates a 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 turning on and off the steam valve. • The boiler relay is closed while the steam valve is open. This provides a signal to fire the steam boiler.
PAGE 7
on/Off Steam Valve A671-3 Electrical For product literature: Pour la documentation du produit: Para la literatura del producto: tekmarControls.
PAGE 8
Electric Cable A671-4 Mechanical Description The WiFi Snow Melting Control 671 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.
PAGE 9
Electric Cable A671-4 Electrical For product literature: Pour la documentation du produit: Para la literatura del producto: tekmarControls.
PAGE 10
Two Zones with Common Mixing A671-5 Mechanical Description The 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 671.
PAGE 11
Two Zones with Common Mixing A671-5 Mechanical Legend B1, B2 = Modulating Boilers M1 = Actuator Motor 741 P1 = Zone 1 Pump P2 = Zone 2 Pump S1a = Zone 1 Snow/Ice Sensor 090 or 094 S1b = Zone 2 Snow/Ice Sensor 090 or 094 S2a = Zone 1 Snow Sensor 095 S2b = Zone 2 Snow Sensor 095 S3a = Zone 1 Slab Sensor 072 or 073 S3b = Zone 2 Slab Sensor 072 or 073 S4 = Outdoor Sensor 070 S5 = 423 Boiler Supply Sensor 082 S6 = 444 Mix Supply Sensor 082 V1 = 3-Way Mixing Valve 710 through 714 X1 = Transformer 009 671 Appl
PAGE 12
Two Zones with Common Mixing A671-6 Electrical Legend Mixing Expansion Module 444 Variable Speed / Floating Action / Modulating 1 tN4 2 3 C R Power Date Code S3a = Zone 1 Slab Sensor 072 or 073 S3b = Zone 2 Slab Sensor 072 or 073 S4 = Outdoor Sensor 070 S5 = 423 Boiler Supply Sensor 082 S6 = 444 Mix Supply Sensor 082 V1 = 3-Way Mixing Valve 710 through 714 X1 = Transformer 009 Cut for mA output B1, B2 = Modulating Boilers M1 = Actuator Motor 741 P1 = Zone 1 Pump P2 = Zone 2 Pump S1a = Zone 1 Sno
PAGE 13
Two Zones with Common Mixing A671-6 Electrical 671 Application Settings tekmarNet For product literature: Pour la documentation du produit: Para la literatura del producto: tekmarControls.
PAGE 14
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PAGE 15
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PAGE 16
Specifications The following are the recommended specifications for the WiFi Snow Melting Control 671. • 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 have the ability to be manually started with an adjustable running time that counts down and automatically stops the system.