Do not apply power
Copyright © tekmar Control Systems Ltd. 2000
654
24Vac 2A Max
Brn
Yel
Slab
Blu
Red
Blk
Com
Out/
BRet
Sup
Aux
Heat
Mod
C
-
+
tN4
XX
red
black
blue
yellow
brown
R
1
2
0-10Vdc
3
4
Out
dc
20V
In
mA
Flow Sensor
5
6
7
Gnd
5V
Vdc
8
9
Boil
10
Ret
11
12
Sys
13
14
15
16
17
B
18
RS 485
680
Sensors - Do not apply power
29
30
31
32
Primary
Pump
System
33
34
35
36
Stage 1
37
38
Stage 2
19
Brn /
21
22
23
24
39
40
42
43
44
45
46
47
Boiler
Opn
L
Power In
N
230Vac 10A
½ HP (max)
RJ45
BACnet
4-20mA
41
Cls
Pwr
Floating
Action Mixing
Pmp
Injection
Mixing
2.4 A
Max.
Relays:
230Vac 5A (max)
or
230Vac 5A
1/3 HP (max)
!
115 Vac
Pressure Sensor
Analog Mixing
A
BACnet MSTP
ModbusMSTP
Blk /
20
Snow / Ice Sensor 1
25
26
27
28
Snow / Ice Sensor 2
BACnet IP
(-)
(+)
Do Not Apply Power
System Pump
Mod Boiler
Mix V/mA
Blk/ Com
Heat Relay
Boiler 1 Stage 2
Boiler 1 Stage 1
Bm/ Slab
Man Melt
Mix Sup
Opn Var
Pwr Mix
1 k max
670
Power
Boiler 1
671