Submittal Sheet
Job __________________________
Designer ______________________
Contact _______________________
Snow Melting Control 680
680
_
C
10/15
Snow Melting
Replaces: 01/15
Submittal
© 2015 680_C - 10/15
1 of 2
A Watts Water Technologies Company
1 234
Injection
Mixing
Pmp
46 47
N
Snow Melting Control 680
BAS, Boiler & Mixing
37 38
Mod
Boiler
33 34
Stage 1Stage 2
35 36
+
-
BACnet IP
Signal wiring must be
rated at least 300 V
For product literature:
www.tekmarControls.com
Meets Class B: Canadian
ICES & FCC Part 15
tektra 1070-01
Designed and
assembled in Canada
H7021B
Input Power:
115 V (ac) ±10%, 60 Hz, 320 VA
Primary, System Pump Relays:
230 V (ac), 10 A, 1/2 hp
Boiler Stage Relays:
230 V (ac), 5 A
Injection Mixing Pump:
230 V (ac), 2.4 A
Boiler Pump Relay:
230 V (ac), 5 A, 1/3 hp
Floating Action Mixing Output:
230 V (ac), 5 A
BluBrn /
Slab
25
Blk /
Com
26 27 28
Red
19
Brn /
Slab
20
Blk /
Com
Yel
21
Red
24
Blu
22
Yel
23
Snow / Ice Sensor 1 Snow / Ice Sensor 2
Do Not Apply Power
41 42 43
Pwr
Floating
Action Mixing
ClsOpn
Boiler
39 40
Pump
Pump
29 30
Pump
Primary System
31 32
44 45
Power In
NL
BACnet MSTP
Modbus MSTP
16 17 18
Gnd
BA
RS-485
+–
20V
3
dc
5V
dc
Out
0-10V /
4-20mA In Out
Flow
Sensor
Pressure
Sensor
In
Vdc
6
Gnd
7
mA
45
+
Com
8
Boil
Sup
Out
9
Boil
Ret
10
ComCom
11
Sys
Sup
12
Sys
Ret
13 14 15
+
1
Analog
Mixing
2
Temperature Sensors
+––
Disconnect All Power
Before Opening
Use supply wires suitable for at least 105°C
Employer des fils d’alimentation pour au moins 105°C
Do Not Apply Power
• Automatic snow/ice detection
• Supports both inslab & retrofit
aerial sensors
• BACnet or Modbus
communication
• Energy monitoring
• Tandem snow/ice detection
• Idling
• Storm
• EconoMelt
• Warm weather shut down
• Cold weather cut out
• Slab protection
• Exercising
Specifications
-------------------------------------------------------------
The Snow Melting Control 680 is designed to operate electric or hydronic equipment to melt snow or ice from any surface including
driveways, walkways, business entrances, parking ramps, loading docks, hospital entrances, helipads and car wash bays. It communicates
with Building Automation Systems using BACnet
®
or Modbus
®
for alert notification, remote monitoring and adjustment capability. The
680 uses a tekmar Snow/Ice Sensor 090 or a Snow Sensor 095 to automatically detect snow or ice on the snow melting slab. Up to two
snow/ice sensors can be installed, thereby increasing detection area and providing backup redundancy in the case of sensor failure.
Upon detection of snow or ice, the 680 operates electric heating cable, a single hydronic condensing or non-condensing boiler, or a
steam valve to provide heat to the snow melt load. The 680 provides boiler return protection by operating a mixing valve or variable
speed injection mixing. Monitoring of energy consumption is possible when it is connected to an optional flow sensor.
Snow Melting Control 680 BAS, Boiler & Mixing
Literature 680_A, 680_B, 680_C, 680_D
Control Microprocessor control. This is not a safety (limit) control.
Packaged weight 6.5 lb. (2950 g)
Dimensions 8-1/16" H x 11-1/8" W x 2-15/16" D (204 x 282 x 74 mm)
Display 3-1/4", color touchscreen, 320 x 205 pixels
Enclosure PC+ABS plastic with steel conduit connection walls, NEMA type 1
Approvals
CSA C US, meets class B: ICES & FCC Part 15, BTL Listed
Ambient conditions Indoor use only, 32 to 122°F (0 to 50°C), < 90% RH non-condensing
Power supply 115 V (ac) ±10%, 60 Hz, 43 VA standby, 320 VA max
Primary, system pump relays 230 V (ac), 10 A, 1/2 hp
Boiler pump relay 230 V (ac), 5 A, 1/3 hp
Boiler stage relays 230 V (ac), 5 A
Boiler modulating output 0-10 V (dc) 500 Ω min impedance / 4-20 mA 1 kΩ max impedance
Injection mixing pump 230 V (ac), 2.4 A
Floating mixing output 230 V (ac), 5 A
Analog mixing output 0-10 V (dc) 500 Ω min impedance / 4-20 mA 1 kΩ max impedance
Flow sensor 4-20 mA, 20 V (dc) power supply by control
Pressure sensor 0.5-4.5 V (dc) ratiometric, 10 kΩ min load, 5 V (dc) power supply by control
Communications BACnet IP, BACnet MSTP, Modbus MSTP
Sensors NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
–Included Outdoor Sensor 070 and 3 of Universal Sensor 082
–Optional tekmar type: 072, 073, 082, 090, 094, 095
Warranty Limited 3 Year (See 680_D for full warranty)
Front View
8–1/16"
(204 mm)
2–15/16"
(74 mm)
Side View
8–1/16"
(204 mm)
11–1/8"
(282 mm)
7/16" (11 mm)
CL
7/16"
(11 mm)
Ø 3/16"
(5 mm)
1/2" Knock-out
(x 16 back) (x 8 top)
(x 8 bottom) (x 2 side)
Features
-----------------