tekmar 661 Snow Detector & Melting Control - Manual (Page 8)

8
Technical Data
Product design, software and literature are Copyright © 1994 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc. All specifications are subject to change without notice.
Printed in Canada on recycled paper.
In North America: tekmar Control Systems Ltd ., Canada
tekmar Control Systems, Inc., USA
Head office: 4611 - 23rd Street
Vernon, B.C. Canada V1T 4K7
Tel. (604) 545-7749 Fax. (604) 545-0650
Limited Warranty: tekmar warrants to the original purchaser each tekmar
product against defects in workmanship and materials when the product is
installed and used in compliance with tekmar's instructions. This limited
warranty covers the cost of parts and labour provided by tekmar to correct
defects in materials and/or workmanship. Returned products that are fully
operational are not considered a warranty case. tekmar also does not cover
parts or labour to remove, transport or reinstall a defective product. tekmar will
not be liable for any damage other than repair or replacement of the defective
part or parts and such repair or replacement shall be deemed to be the sole
remedy from tekmar. This warranty shall not apply to any defects caused or
repairs required as a result of unreasonable or negligent use, neglect,
accident, improper installation, or unauthorised repair or alterations. In case
of defect, malfunction or failure to conform to warranty, tekmar will, for a
warranty period of 24 months from the date of invoice to the original purchaser
or 12 months from the date of installation of the product, whichever occurs first,
repair, exchange or give credit for the defective product. Any express or
implied warranty which the purchaser may have, including merchantability and
fitness for a particular purpose, shall not extend beyond 24 months from the
date of invoice or 12 months from the date of installation of the product,
whichever occurs first.
Replacements: tekmar can send replacement products if requested. All
replacements are invoiced. Any possible credit for the replacement will only
be issued once the replaced product has been returned to tekmar.
Product Return Procedure: Products that are believed to have failed must
be returned to tekmar Control Systems Ltd. 4611-23rd Street, Vernon B.C.
Canada V1T 4K7 when agreed to by tekmar. The installer or other qualified
service person must, at the owners expense, determine which component has
failed. The product must be returned complete with all of its components
(sensors, base, etc.). Products must be returned together with the proof of
purchase to the original purchaser who then returns the product to tekmar
after receiving a Return Goods Authorisation (RGA) number from tekmar.
Please include the following information with the product: The full address
of the original purchaser, the RGA number and a description of the problem.
From the U.S.A., in order to avoid customs charges, products must be
returned via US Post with the package clearly marked with the RGA
number, product type and the statement "Canadian Product returned for
repair". For shipping purposes the product can be valued at one half list
price.
1) If returned during the warranty period and the product is defective,
tekmar will issue full credit for the returned product less cost of missing
parts.
2) If returned during the warranty period and the product is fully opera-
tional, tekmar will return the product to the original purchaser for a
testing cost of $30.00 plus postage.
3) If returned during the warranty period and the product is not damaged
and is fully operational, tekmar can take back the product for a return
charge of 40% of the product's net value. This request has to be
specified otherwise the product will be returned with a testing cost of
$30.00 plus postage.
4) If returned after the warranty period and the product needs repair,
tekmar will repair and return the product. Repair and postage costs will
be invoiced. tekmar's repair costs are calculated at $30.00 / hour plus
the cost of parts. If the repair costs will be more than $60.00 a repair
estimate will be sent to the original purchaser.
Limited Warranty and Product Return Procedure
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.
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.
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)
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