8
The installer must ensure that this control and its wiring are isolated and/or shielded from strong sources of electromagnetic noise.
Conversely, this Class B digital apparatus complies with Part 15 of the FCC Rules and meets all requirements of the Canadian
Interference-CausingEquipmentRegulations.However, if this control does cause harmful interference to radioortelevisionreception,
which can be determined by turning the control off and on, the user is encouraged to try to correct the interference by reorienting or
relocating the receiving antenna, relocating the receiver with respect to this control, and/or connecting the control to a different circuit
from that to which the receiver is connected.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
All specifications are subject to change without notice.
Printed in Canada on recycled paper.
Product design, software and literature are Copyright © 1997 by:
tekmar Control Systems Ltd. and tekmar Control Systems, Inc.
Control Systems
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
Limited Warranty
The liability of tekmar Control Systems Ltd. and tekmar
ControlSystems, Inc.("tekmar")underthiswarranty islimited.Pleasereadand
understand the conditions appearing herein.
tekmarwarrants each tekmar product againstdefects inworkmanship and materials,
when 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, but in any event the warranty period shall not extend beyond thirty-
six (36) months from the production date. During the warranty period, tekmar will, at
its discretion, either repair at no charge, exchange or give credit for the defective
product, provided the product is returned to tekmar.
Theliabilityoftekmarshallbelimitedtothecostofpartsand labourprovidedbytekmar
tocorrectdefectsinmaterialsand/orworkmanshiportotheexchangeofthedefective
productforareplacementproductortothegrantingofcreditlimitedtotheoriginalcost
of the product, at tekmar's discretion, and such repair, exchange or credit shall be
deemed to be the sole remedy available from tekmar. This warranty does not cover
the cost of the parts or labour to remove or to transport the defective product, or to
reinstalltherepairedorreplacementproduct.Returnedproductsthatarenotdefective
are not covered by this warranty.
This warranty does not apply if the product has been damaged by accident, abuse,
misuse, negligence, fire, Act of God, or has been damaged by modifications,
alterations or attachments made subsequent to purchase which have not been
authorized by tekmar, or if the product was not installed in compliance with the
local codes and ordinances, or if due to defective installation of the product.
The warranty applicable to a product is as set out in the statement of warranty
policy (the "Warranty") above, receipt of which is hereby acknowledged. The
liability of tekmar is limited to those obligations identified in the warranty as
obligations of tekmar. The warranty is understood to be in substitution for any
loss, costs or damages for which tekmar might otherwise be liable at law or in
equity and in particular, in lieu of any liability for fundamental breach of
contract.
tekmar disclaims any responsibility for losses, expenses, inconveniences, or
any special, indirect, secondary, incidental or consequential damages arising
from ownership or use of any items subject to any claim hereunder, regardless
of whether such claim is stated in contract, tort or strict product liability.
This warranty is in lieu of all other warranties, express or implied, including,
withoutlimitation,warrantiesofmerchantability,fitness foraparticularpurpose,
durability or description of the product, its non-infringement of any relevant
patentsortrademarks,anditscompliancewithornon-violationofanyapplicable
environmental, health or safety legislation. No implied warranties shall extend
beyond twenty-four (24) months from the production date.
Some states or provinces do not allow limitations on how long an implied warranty
lasts, so the above limitation may not apply to you. This warranty gives you specific
legal rights, and you may also have other rights which vary from state to state or
province to province.
ProductReturnProceduresProductsthatarebelievedtohavedefectsinworkmanship
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 representative is not
known, please request it from tekmar at the telephone number listed below.
Limited Warranty and Product Return Procedure
Technical Data
One Stage Boiler Control 253
Literature — A 000, A 253's, D 253, D 001, D 070
Control — Microprocessor PI control; This is not a safety (limit) control.
Packaged weight — 1.1 lb. (500 g), Enclosure C, PVC plastic
Dimensions — 4-3/4” H x 2-7/8” W x 7/8” D (120 x 74 x 22 mm)
Approvals — CSA NRTL /C; Meets ICES & FCC regulations for EMI/RFI.
Ambient conditions — Indoor use only, 15 to 120°F (-10 to 50°C), < 90% RH non-
condensing.
Power supply —
Class 2, 24 V ±10% 50/60 Hz 3 VA
Relays — 120 V (ac) 5 A 1/6 hp, pilot duty 240 VA 2 A
Sensors — NTC thermistor, 10 kW @ 77°F (25°C ±0.2°C) ß=3892
included: Outdoor Sensor 070 and Universal Sensor 071.
Starting Temp. —
35 to 150°F (2 to 66°C)
WWSD
— 35 to 85°F (2 to 29°C)
Curve
— 0.2 to 3.6
Differential
— Auto, 2 to 42°F (Auto, 1 to 24°C)
Minimum Boiler
— Off, 70 to 170°F (Off, 21 to 77°C)
Item
4
Boiler
56
T
1
H11461
PRGM
FC
WWSD
24 V 50/60 Hz 3 VA
120 V (ac) 5 A1/6 hp
pilot duty 240 VA
Power:
Boiler Relay:
Mar 97
31000265
- displays control settings
- displays hundreds of hours of use
- displays hours of use
Press & Hold:
Item
One Stage Boiler
Control 253
23
Com
Sen
Boil
Sen
Out
Sen
No power
78
Power
R+ C-
NRTL /C
LR 58223
R
USE
(hours)
Minimum Boiler
Differential
Curve
Boiler Supply
Target Boiler
Starting Temp.
H. Dem
Boiler
OUTDOOR
Signal wiring must be
rated at least 300V
Made in Canada
