tekmar 662 Snow Detector & Melting Control - Manual (Page 12)

12
The installer must ensure that this control and its wiring are shielded from strong sources of electromagnetic noise. Conversely, this electronic
control does not exceed Class B limits for radio noise emissions from digital apparatus as set out in the Radio Interference Regulations of
the Canadian Department of Communications. If this equipment does cause interference, the user is encouraged to try to correct the
interference by reorientating the receiving antenna and/or relocating the receiver with respect to this equipment. Le présent numérique
n'émete pas de bruits radioeléctriques dépassant les limites applicables aux appareils numériques de Classe B prescrites dans le réglement
sur le brouillace radioeléctrique édicté par le Ministére des Communications du Canada.
Limited Warranty The liability of tekmar Control Systems Ltd. and tekmar
Control Systems, Inc. (“tekmar”) under this warranty is limited. The purchaser,
by taking receipt of the tekmar product (“product”), acknowledges receipt of
the terms of the warranty and acknowledges that it has read and
understands same.
tekmar warrants each tekmar product against defects in workmanship and materi-
als, if the product is installed and used in compliance with tekmar's instructions. The
warranty period is for a period of twenty-four (24) months from the production date
if the product is not installed during that period, or twelve (12) months from the
documented date of installation if installed within twenty-four (24) months from the
production date.
The liability of tekmar under this warranty shall be limited to, at tekmar's sole dis-
cretion: the cost of parts and labor provided by tekmar to repair defects in materials
and/or workmanship of the defective product; or to the exchange of the defective
product for a replacement product; or to the granting of credit limited to the original
cost of the defective product, and such repair, exchange or credit shall be the sole
remedy available from tekmar, and, without limiting the foregoing in any way,
tekmar is not responsible, in contract, tort or strict product liability, for any
other losses, costs, expenses, inconveniences, or damages, whether direct, indi-
rect, special, secondary, incidental or consequential, arising from ownership or use
of the product, or from defects in workmanship or materials, including any liability
for fundamental breach of contract.
This warranty applies only to those products returned to tekmar during the
warranty period. This warranty does not cover the cost of the parts or labor
to remove or transport the defective product, or to reinstall the repaired or
Limited Warranty and Product Return Procedure
replacement product. Returned products that are not defective are not cov-
ered by this warranty.
This warranty does not apply if the product has been damaged by negligence
by persons other than tekmar, accident, fire, Act of God, abuse or misuse; or
has been damaged by modifications, alterations or attachments made sub-
sequent to purchase which have not been authorized by tekmar; or if the
product was not installed in compliance with tekmar’s instructions and the
local codes and ordinances; or if due to defective installation of the product;
or if the product was not used in compliance with tekmar’s instructions.
This warranty is in lieu of all other warranties, express or implied, which the
Governing Law (being the law of British Columbia) allows parties to contrac-
tually exclude, including, without limitation, warranties of merchantability,
fitness for a particular purpose, durability or description of the product, its
non-infringement of any relevant patents or trademarks, and its compliance
with or non-violation of any applicable environmental, health or safety legis-
lation; the term of any other warranty not hereby contractually excluded is
limited such that it shall not extend beyond twenty-four (24) months from the
production date, to the extent that such limitation is allowed by the Govern-
ing Law.
Product Return Procedure Products that are believed to have defects in work-
manship or materials must be returned, together with a written description of the
defect, to the tekmar representative for that territory. If the address of the repre-
sentative is not known, please request it from tekmar at the telephone number
listed below
.
All specifications are subject to change without notice.
Printed in Canada on recycled paper.
Product design, software and literature are Copyright © 1999 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.
tekmar Control Systems Ltd., Canada
tekmar Control Systems, Inc., U.S.A.
Head Office: 4611 - 23rd Street
Vernon, B.C. Canada V1T 4K7
Tel. (250) 545-7749 Fax. (250) 545-0650
Web Site: www.tekmarcontrols.com
Control Systems
Snow Detector & Melting Control 662 Floating / Variable Speed / 4-20 mA
Literature — D 662, A 662’s, D 001, D 070, E 021.
Control — Microprocessor PID control; This is not a safety (limit) control.
Packaged weight — 4.1 lb. (1900 g), Enclosure A, blue modified PPO 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 ICES & FCC regulations for EMI/RFI.
Ambient conditions — Indoor use only, 30 to 105 °F (0 to 40°C), < 90% RH non-
condensing.
Power — 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 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 included — NTC thermistor, 10 k Ω @ 77°F (25°C ±0.2°C) ß=3892
Outdoor Sensor 070, Slab Sensor 072, & 3 of Universal Sensor 071
Optional devices — tekmar Type #: 011, 031, 090, 091.
Detection of Snow/Ice — Down to -20 °F (-29°C) in calm air with 500 feet (150 m) 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 (Off, -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 (Off, 13 to 66°C)
∆T Max — 10 to 50 °F (6 to 28°C)
CWCO — Off, -22 to 25 °F (Off, -30 to -4°C)
Motor Speed — 30 to 230 seconds
Temperature display — Fahrenheit / Celsius
Snow Detector & Melting Control 662
Floating / Variable Speed / 4-20 mA
Test
Do not apply power here
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.
120 V (ac) ±10% 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
Made in Canada by
tekmar Control Systems Ltd.
tekmar 010
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
F C
OUTSIDE
29
Com
Mix
1000 Ω
4-20
R
NRTL /C
LR 58223
Jan 98
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tekmar 011