19 of 20
1
2
3
4
Injection
Mixing
Pmp
46 47
N
Snow Melting Control 680
BAS, Boiler & Mixing
37 38
Mod
Boiler
33 34
Stage 1 Stage 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
Blu
Brn /
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
Cls
Opn
Boiler
39 40
Pump
Pump
29 30
Pump
Primary
System
31 32
44 45
Power In
N
L
BACnet MSTP
Modbus MSTP
16 17 18
Gnd
B
A
RS-485
+
–
20V
3
dc
5V
dc
Out
0-10V /
4-20mA
In Out
Flow
Sensor
Pressure
Sensor
In
Vdc
6
Gnd
7
mA
4
5
+
Com
8
Boil
Sup
Out
9
Boil
Ret
10
Com
Com
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
Outdoor Sensor
Optional Tandem
Snow/Ice Sensor
090
Brn
Slab
Blk
Com
Yel Blu
Red
Snow
Sensor
095
Snow
Sensor
095
Slab
Sensor
072
Snow/Ice
Sensor
090
OR
System Supply Sensor
Boiler Return Sensor
24 V (ac)
Power Supply
Floating
Actuating Motor
Open
Close
C
R
C
Modulating
Boiler
Mod
Stage 1
T
T
+
-
Field Wired
Appendix - Control Wiring