tekmar 661 Snow Detector & Melting Control - Manual (Page 9)

Snow Detector & Melting Control 662
Literature — D 662, A 662, D 001, D 090, E 000, E 021, E 600
Control — Microprocessor PID control; This is not a safety (limit) control.
Packaged weight — 4.1 lb. (1900 g), Enclosure A, PVC plastic
Dimensions — 6-5/8” H x 7-9/16” W x 2-13/16” D (170 x 193 x 72 mm)
Approvals — CSA NRTL/C, meets DOC regulations for EMI/RFI.
Ambient conditions — Indoor use only, 30 to 105°F (0 to 40°C), < 90% RH non-
condensing.
Power supply — 120 V ac ±10% 50/60 Hz 300 VA
System Pumps — 120 V ac 6 A 1/3 hp, pilot duty 240 VA 2 A
Variable Speed Pump — 120 V ac 50/60 Hz 2.2 A 1/6 hp, internally fused
Mix Relays
— 24 V ac 10 A, pilot duty 48 VA 2 A
Other Relays — 120 V ac 10 A 1/3 hp, pilot duty 240 VA 2 A
Sensors — NTC thermistor, 10 k Ω @ 25°C ±0.2°C ß=3892
included: Outdoor Sensor 070, 3 of Universal Sensor 071, & Slab Sensor 072.
optional: Snow/Ice Sensor 090 and Sensor Socket 091.
Control accuracy — ±1°F (±0.5°C) with up to 500 feet (150m) of 18 AWG wire.
Detection of Snow/Ice — Down to -20°F (-29°C) in calm air with 500 feet (150m) of
18 AWG wire to Snow/Ice Sensor 090.
Surface, Melting — 34 to 44°F (1 to 7°C)
Surface, Idling — Off, 24 to 35°F (-5 to 2°C)
Water Sensitivity — 20 to 80%
Maximum Supply — 100 to 200°F (38 to 93°C)
Min. Boiler Return — Off, 55 to 150°F (13 to 66°C)
∆T max — 10 to 50°F (6 to 28°C)
CWCO — Off, -22 to 25°F (-30 to -4°C)
Motor Speed — 30 to 230 seconds
Snow Detector & Melting Control 661
Literature — D 661, A 661, D 001, D 090, E 000, E 600
Control — Microprocessor PI control; This is not a safety (limit) control.
Packaged weight — 3.4 lb. (1550 g), Enclosure A, PVC plastic
Dimensions — 6-5/8” H x 7-9/16” W x 2-13/16” D (170 x 193 x 72 mm)
Approvals — CSA NRTL/C, meets DOC regulations for EMI/RFI.
Ambient conditions — Indoor use only, 30 to 105°F (0 to 40°C), < 90% RH non-
condensing.
Power supply — 120 V ac ±10% 50/60 Hz 20 VA
Relays — 120 V ac 10 A 1/3 hp, pilot duty 240 VA 2 A
Sensors — NTC thermistor, 10 k Ω @ 25°C ±0.2°C ß=3892
included: Outdoor Sensor 070.
required: Snow/Ice Sensor 090 and Sensor Socket 091. (Order separately)
Control accuracy — ±1°F (±0.5°C) with up to 500 feet (150m) of 18 AWG wire
to sensors.
Detection of Snow/Ice — Down to -20°F (-29°C) in calm air with 500 feet (150m) of
18 AWG wire to Snow/Ice Sensor 090.
Surface, Melting — 34 to 44°F (1 to 7°C)
Surface, Idling — Off, 24 to 35°F (-5 to 2°C)
Water Sensitivity — 20 to 80%
Minimum On Time — Off, 0.2 to 4 hours
CWCO — Off, -22 to 25°F (-30 to -4°C)
In North America: tekmar Control Systems Ltd., Canada
tekmar Control Systems, Inc., USA
Head office:
5100 Silver Star Road
Vernon, B.C. Canada V1 B 3K 4
Tel. (604) 545-7749 Fax. (604) 545-0650
Additions to Technical Specifications for type 661
D 661A
09/94
- Data Brochure Addendum
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.
The Snow/Ice Sensor is installed in a hostile environment.
It should be cleaned and checked on a regular basis.
N R T L / C
F C
OUTSIDE
CWCO
0 °F
-20
25 Off Off
0.5
Pump
All specifications are subject to change without notice.
Printed in Canada on recycled paper.
Product designs, software and literature are Copyright © 1994 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.
CAUTION The nonmetallic enclosure does not provide grounding between conduit connections. Use grounding type bushings and jumper wires.
ATTENTION Un boîtier non métallique n'assure pas la continuité électriques des conduits. Utiliser des manchons ou des fils de accord
spécialement conçus pour la mise à la terre.
CAUTION The nonmetallic enclosure does not provide grounding between conduit connections. Use grounding type bushings and jumper wires.
ATTENTION Un boîtier non métallique n'assure pas la continuité électriques des conduits. Utiliser des manchons ou des fils de accord
spécialement conçus pour la mise à la terre.
Additions to Technical Specifications for type 662
D 662A
09/94
- Data Brochure Addendum
Snow Detector & Melting Control 662
Floating / Variable Speed / 4-20 mA
Test
Do not apply power here
H1
1002
Power
Remote
Item
Max. Supply
30
130 sec
230
Motor Speed /
Pump Response
CWCO
10
30 °F
50
∆T Max.
Sensitivity Melting
Min. Boil Return
Idling
29 °F
Off 35
24
50 %
20 80
Surface
39 °F
34 44
100 °F
Off 150
60
150 °F
100 200
0 °F
-20
25
Red
Sen Blk
Sen
Blu
Sen
17 18 19 20 21 22 23 24 25 26 27 28
Yel
Sen
Brn
Sen
Com
Sen
Rem
En
Bret
Sen Com
Sen
Ret
Sen Sup
Sen Out
Sen
1 2
Melt
3 4
Boiler
11 12 13 14 15 16
4-20
+ –
Pump 1 Pump 2
Opening
Boiler
Warning
Closing
CWCO
Melting Idling
WWCO
Maximum
∆T
Maximum
Supply Minimum
Return
Water
Supply Usage ( ∆T x hrs)
Slab
Boiler Return Actual ∆T
% Output
To change between °F and °C, press and
hold for 1 sec.
R LR 58223
120 V ac 50/60 Hz 300 VA
120 V ac 6 A 1/3 hp, pilot duty 240 VA 2 A
120 V ac 50/60 Hz 2.2 A 1/6 hp, internally fused
24 V ac 10 A, pilot duty 48 VA 2 A
120 V ac 10 A 1/3 hp, pilot duty 240 VA 2 A Power
System Pumps
Variable Pump
Mix Relays
Other Relays
Enclosed Energy Management Equipment
Manufactured
in Canada by
Date
S/N
tekmar motor
Opn
Mix
Cls
Mix
Warning
5 6 9 7 8
P1
Pmp
P2
Pmp
Com
Pmp Power
L N
Var
Pmp
Use Nº 20 AWG or larger copper conductors rated for at least 75 °C / 300V
Target ∆T
The Snow/Ice Sensor is installed in a hostile environment.
It should be cleaned and checked on a regular basis.
10
Off
N R T L / C
F C
OUTSIDE
29
Com
Mix
1000 Ω
4-20
2094
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