4516 112 Ave S.E. Calgary,
Alberta •
Te
l: (403) 279 0020 •
Fax: (403) 279 0747
www.tamashydronic.com
Page 12
Tamas Hydronic Panels
Snow Melt Series
Wiring
Wiring Diagram
All electrical wiring to the panel (including grounding) must conform to local electrical codes and/or National Electrical
Code, ANS/NFPA No. 70-latest edition, or the Canadian Electrical Code, C22.1- Part 1.
Snow Melt Sensor
Take special care that the sensor wire is not run with any high voltage wiring as this may result in faulty readings. The
sensor is supplied with 100 feet of 22 AWG shield cable. If the sensor is more than 100 feet from the control extend the
wire from the end of the sensor wire. Do not shorten the original sensor wire then extend its length over 100 feet. When
extending the cable (to a maximum of 200 feet) use 18 AWG shielded cable. If possible two pair shields 18 AWG for best
results. You must also extend the shield wire and attach it to the same point as the black wire on the terminal block.
Do not cut the wire. All 100 ft. should always be left intact as the wire has an ohm rating. If you cut the wire the sensor
will be hotter than normal and void the warranty.
Outdoor Sensor
The outdoor sensor should be installed in the north face location and has to be connected to the HBX snow melt control
SNO-0550
Boiler
Boiler output to connect to the TT contact in the boiler
Power
Connect a 120 VAC/15 Amp supplies to the “AC IN” tagged leads in the wiring box.
L
N
120 V AC
Boiler
Out
door
S
enso
r
Snowmelt Sensor
Injection
Pump
Boiler
Pump
System
Pump
He
at
D
emand
System
Sensor
5 A
5 A
Central Processing Unit
SNO-0550
HBX
5 A
RL
1
RL
18
17
1
RL
2
RL
20
19
2
GR
120
16
N
L
15
14
TM
3
2
11
TM TM
10
12 13
BL
1
BL
9
8
1
1
5
SG
2
2
PW TM
1
3
4
24 VAC MAX
RL
3
RL
22
21
3
FD
1
FD
7
6
1
5
S
4
3
C
1
2 A
DO NOT
CONNECT
POWER HERE
DO NOT
CONNECT
POWER HERE
Return
Sensor
8
4
1
5
9
12
14
13
TAM-R2-120V AC
