tekmar 661 Snow Detector & Melting Control - Manual

1
Snow Detector & Melting Control 661
Pulse Width Modulation
Test
Do not apply power here
H1077 1
Power
Remote
Item
Min. On Time
Sensitivity Melting Idling
29 ° F
Off 35
24
50%
20 80
Surface
39 ° F
34 44
2 hrs
4
Red
Sen Blk
Sen
Blu
Sen
11 12 13 14 15 16 17 18
Yel
Sen
Brn
Sen
Rem
En
Com
Sen
Out
Sen
1 2
Melt
3 4
Heat
9 10
Pump
Heat
Warning
CWCO
Melting Idling
WWCO
Water
Target Slab Usage (hours)
Slab
Time Remaining
% Output
To change between
° F and ° C, press and
hold for 1 sec.
R LR 58223
120 V ac ± 10% 50/60 Hz 20 VA
120 V ac 10 A 1/3 hp, pilot duty 240 VA 2 A
Power
Relays
Enclosed Energy Management Equipment
Manufactured
in Canada by
Date
S/N 0694
3005678
Warning
5 6 7 8
Power
L N
Use Nº 20 AWG or larger copper conductors rated for at least 75 ° C / 300V.
Input: Outdoor
Sensor 070
(Included)
Input: Remote
Enable signal
(Optional)
Output:
Turn on boiler
Output:
Turn on system pump
Output:
Warning device
activated if sensor
fault detected
Output:
Melt relay closed
when control is
in melting mode
120 V ac
Power Supply
The Snow/Ice Sensor is installed in a hostile environment.
It should be cleaned and checked on a regular basis.
Input: Snow/Ice Sensor 090 installed
with Sensor Socket 091 (Required)
Both of these components must
be ordered separately
N R T L / C
F C
OUTSIDE
CWCO
0 ° F
-20
25 Off Off
0.5
Pump
Output:
Turn on injection
pump
Output:
Turn on relay for
electric cables
AND/OR
- Data Brochure
Snow Detector & Melting Control 661
The tekmar Snow Detector & Melting Control 661 is a microprocessor-based control which
activates a snow/ice melting system based on signals received from a Snow/Ice Sensor 090
and an Outdoor Sensor 070. When the control is in melting mode, the slab is maintained at a
“Melting” temperature through an on/off output which operates a contactor for electric cables,
a boiler, an injection pump or an injection valve. When the control is not in melting mode, the
melt system can either be shut down or it can be maintained at an idle temperature for faster
response and improved safety. If a fault occurs in a sensor or its wiring, the control activates
a Warning contact.
D 661
06/94
Snow Detector and Melting Control 661
On/Off operation
Power
Remote
Item
F C
OUTSIDE
Pump
Heat
Warning
CWCO
Melting Idling
WWCO
Water Slab
Target Slab % Output Usage (hours) Time Remaining
To change between ° F and ° C, press and hold for 1 sec.
R
LR 58223
Terminal Plugs
Fault warning
Slab heating is on
LCD display
item select
Slab surface
temperature
Weather is warm enough,
no snow melting required
Control is in
Melting mode
Water is detected
by the sensor
% Heat Output
to slab
Accumulated
hours of use
Sequence of Operation pg. 2
Installation . . . . . . . . . . pg. 3
Settings . . . . . . . . . . . . pg. 5
Display Operation . . . . pg. 6
Pump relay is
closed
Cold Weather
Cut-off
temperature
Melting System
Minimum on time
Remote Enable
Signal present
Weather is too cold,
snow melting is off
Control is in
Idling mode
Testing . . . . . . . . . . . . . pg. 6
Error Messages . . . . . . pg. 7
Technical Data . . . . . . . pg. 8
Limited Warranty . . . . . pg. 8
Desired slab surface
temperature during
Melting mode
Desired slab surface
temperature during
Idling mode
Sensor Sensitivity
to water
Test button to
initiate test
sequence
Target Slab surface
temperature
Minimum Time
Remaining
in melt sequence
120 V ac power
supply is on