Service Manual

© 2015 680_D - 10/15 16 of 48
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
Switch Settings
Switch Position Action
1
ON
LOCK ACCESS LEVEL
The control is locked and the access level cannot be changed. Set to lock when installation has been
completed.
OFF
UNLOCK ACCESS LEVEL
The control is unlocked and the access level may be changed. Go to the Toolbox menu to change the access
level. Set to unlock during the installation process.
2
ON
Not used
OFF
Not used
3
ON
Not used
OFF
Not used
4
ON
Not used
OFF
Not used
Access Levels and Access Level Lock
The control is shipped pre-programmed with common settings.
The control has an “ Installer ” access level that allows full
access to all settings and a “ User ” access level that restricts
the number of settings available. The control defaults to the
“ User ” access level after 12 hours of operation.
To change to the
“ Installer ” access level:
• Step 1: Press the Settings button.
• Step 2: Press the Toolbox button.
• Step 3: Press Access Level.
• Step 4: Press the Installer radio button.
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