Thermolec Application &Technical Notes Manuel d'utilisateur

THERMOLECCertificate of ComplianceCertificate Number: LR 30551-1Revision: LR 30551-35Issued to: THERMOLEC LTÉE/LTD2060 Place ThimensSt-Laurent, Québec

STEP 1 - (continued)FUSINGThe National Canadian and Electrical Code requires that each power supply to a heater be individuallyprotected by either fus

STEP 1 - (continued) ContactorsContactors are used to power individual stages of heat or as back-up for safety switches.Contactors may be of two type

THREEEASY STEPSSTEP 2 -DETERMINE DUCT DIMENSIONS, AIR REQUIREMENT AND MECHANICAL OPTIONSAir Flow requirements and Minimum VelocityWhen there is a choi

THREE EASY STEPSSTEP 2 - (continued)Using the Air flow requirement curve above, find 21.66 on the vertical scale.Read the minimum velocity required on

THREE EASYSTEPSSTEP 2 - (continued)Airflow UniformityIn order to prevent hot spots, the air flow must be uniformly distributed across the heater area.

THREEEASY STEPSSTEP 2 - (continued)OPEN COIL vs TUBULAR elementsTHERMOLEC manufactures both open coil and tubular duct heaters.It is widely acknowledg

THREE EASY STEPSSTEP 2 - (continued)Exclusive Design advantage of the Thermolec Tubular heater constructionThermolec Tubular elements can be removed t

THREEEASY STEPSSTEP 2 - (continued)Size LimitationsAlthough there are practically no limitations to the maximum size of Thermolec custom-built heaters

THREE EASYSTEPSSTEP 2 - (continued)Variable Air Volume units (VAV)The"Thermo-V"electric heater developed by Thermolec eliminates the common

THREE EASY STEPSSTEP 2 - (continued)Thermolec has developed and patented an innovative solution to eliminate these problems:The Proportional Electroni

Certificate of ComplianceCertificate Number: LR 30551-27Revision: LR 30551-35Issued to: THERMOLEC LTÉE/LTD2060 Place ThimensSt-Laurent, QuébecH4R 1L1T

THREE EASYSTEPSSTEP 2 - (continued)Universal mounting of Thermolec heatersUnique featureBy design, all Thermolec heaters are made non-sensitive to air

THREE EASY STEPSSTEP 2 - (continued)Heater InstallationInstallation of Slip-in heater Installation of flanged heaterDetails of the Thermolec Mechanica

THREE EASYSTEPSSTEP 2 - (continued)Protective screensScreens on both sides of the heater prevent anyaccidental contact by personnel or tools with elec

STEP 2 - (continued)Nema 4 or Weatherproof control BoxNEMA 4 or Weatherproof oversized control panelInsulated Terminal BoxWhen there is a risk of con

THREE EASY STEPSSTEP 2 - (continued)COLDSECTIONCOLDSECTIONHEATINGSECTIONSpecial Heater with no-heat sectionsNema 12 Remote Control BoxStainless Steel

DETERMINE METHOD OF CONTROL AND SELECT CONTROLCOMPONENTSTemperature Control Modes and StagingIn selecting temperature controls the specification write

THREE EASY STEPSSTEP 3 - (continued)ON - OFF Control ModeAir temperature is controlled by switching on and off selected control stages of the heater o

THREE EASY STEPSSTEP 3 - (continued)Pulse Width Modulation DiagramIn the above example:10%= 12 cycles ON, 108 cycles OFF0.2 seconds of heating on 2 se

THREE EASY STEPSSTEP 3 - (continued)Comparison between ON/OFF and proportional controlDue to it’s high differential, ON/OFF control mode wastes a lot

THREEEASYSTEPSSTEP 3 - (continued)Thermolec strongly recommends the use of SCR proportioning controls for the best results in energyefficiency and max

THERMOLEC FEATURESFEATURESMERCURY CONTACTORSUsed to power individual stages ofheating. They allow a silent operationand are exceptionally reliable.AUT

STEP 3 - (continued)HYBRID or VERNIER CONTROL - PrinciplesWhere FINE control accuracy is required and the heater capacity is too high to be handled ec

STEP 3 - (continued)Since the SCR step is kept relatively small (53.3 Kw ), it is still cost effectivecompared to a full SCR 160 KW.In the following g

STEP 3 - (continued)HYBRID CONTROL - Binary ModeBinary staging for a 160 KW heater.SCR Step 1/16 10 KWStep 11/16 10 KWStep 22/1620 KWStep 3 4/16 40 KW

THREEEASYSTEPSSTEP 3 - (continued)In the following graphic, the binary loads are switched ON and OFF to match the heat demand.Lay a straightedge verti

STEP 3 - (continued)Summary of Temperature Control1- Electric ON / OFF thermostats are available up to three stages for room or duct control and up to

THREE EASYSTEPSSTEP 3 - (continued)Modulating Room ThermostatsRTThe Thermolec RT electronic modulating room thermostat is a thermistorproportional typ

THREE EASY STEPSSTEP 3 - (continued)Modulating Duct ThermostatsDTThe Thermolec DT electronic modulating duct thermostat is a thermistorproportional ty

THREE EASYSTEPSSTEP 3 - (continued)SCR ControllerThe SCR is a time proportioning type controller that modulates the heater and supplies the exact amou

THREE EASYSTEPSWarranty1- Thermolec Ltd. guarantees their heater resistance elements and other built-in components againstany defect in workmanship a

SPECIFICATION FOR OPEN COIL HEATERSLong FormSupply where indicated in these specifications, or where shown on drawings, CSA (NRTL/C) approved open coi

MODELSSLIP-IN TYPE DUCT HEATERS AND FLANGED TYPE DUCT HEATERSSC Slip-in Open Coil (Fig. 1)ST Slip-in TubularFC Flanged Open CoilFT Flanged Tubular (Fi

OPEN COIL HEATERLong Form (continued)☛7- STANDARD BUILT-IN CONTROLS:All duct heaters shall be complete with the following built-in controls:• High lim

Short Form• Supply where indicated in these specifications CSA (NRTL/C when required) approved duct heaters asmanufactured by THERMOLEC.• Coils shall

SPECIFICATION FOR TUBULAR HEATERSLong FormSupply where indicated in these specifications CSA (NRTL/C) approved tubular duct heaters as manufactured by

TUBULAR HEATER SPECIFICATIONLong Form (continued)☛6- INTERNAL WIRING:• All internal wiring shall terminate on clearly identified terminal blocks.• A

SPECIFICATION FOR TUBULAR HEATERSShort Form• Supply where indicated in these specifications CSA (NRTL/C when required) approved duct heaters asmanufac

THERMO-V SPECIFICATIONSupply where indicated in these specifications, or where shown on drawings, CSA (NRTL/C) approved THERMO-V typeheaters speciall

ApplicationNotesApplicationNotes2060 Lucien Thimens StreetSt-Laurent, Quebec H4R 1L1Tel.: (514) 336-9130Fax: (514) 336-3270OPENCOILANDTUBULARELEMENT

HOW TO SELECT AND SPECIFY IN THREE EASY STEPSSelecting the heater for your application can be done in three easy steps:1- Determine heater capacity, v

APPLICATION NOTESOpen coil and tubular elements considerationsTHERMOLEC manufactures both open coil and tubular duct heaters.It is widely acknowledged

4-KILOWATTS PER SQUARE FOOTSince tubular elements surface temperature lag behind the resistance wire temperature due to mass and insulation, andin ord

6-WEIGHTOpen coil duct heaters weigh considerably less than comparable tubular heaters, hence they offer additional cost savings inpacking, shipping,

FACTOR OPEN COIL TUBULAR FINNED TUBULARSelection guide for heating elementsFollowing are a few factors commonly used to determine the choice of constr

THERMOLEC

THERMOLECTitle / TitreDrawing number / Numéro de dessinMST0

THERMOLECTitle / TitreDrawing number Numero de dessinMFC0 10LS 0002 000K- - -

THERMOLECTitle / TitreDrawing number / Numéro de dessinMSC0 10LS 0002 000M- - -

THERMOLECTitle / TitreDrawing number / Numéro de dessinMRFC 40LS 0002 000G- - -

2060, LUCIEN-THIMENS STREET, TEL. : 1-800-336-9130MONTREAL, QUEBEC, CANADA, FAX : 1-800-336-3270H4R 1L1WEB : thermolec.com ApplicationsandTechnical

Chart to determine the required kilowattsFor a rough estimate, use the chart above.Example:Find the KW required to raise 2000 CFM from -10 to 40 ºF.D

Application # 1Thermo-Air complementing a heatrecovery ventilation system.At low temperature, a heat recovery ventilationsystem cannot recover enough

FRESH AIR HEATERApplication # 3Fresh Air make-up.A THERMO-AIRheater combined with a small fan isall that it takes to create a low-cost, efficient anda

ZONE HEATERApplication # 1Central ventilation with zone heaters.In this application, there is no furnace required but only acentral blower that provid

ZONE HEATERApplication # 3Stand alone heating system.A THERMO-ZONE heater combined with a small ventilationunit and two grilles or diffusers is all t

How to evaluate your heating requirement?Considering today’s insulation standards, an easy to remember rule of thumb is that theheating capacity shoul

Specifications and Safety FeaturesHeating capacity of 1 to 8 KW.Standard voltages 120, 208, 240, 277 and 347.Standard round collar dimension 6" a

THERMO-AIR & THERMO-ZONEGraphic for proportional controlProportional Control Diagram - Principle of the Pulse With ModulationBy comparing the inpu

THERMOLECD22-TFSENSORDUCTSENSORAIR FLOWDEBIT D'AIRSONDE DE SONDE DE DE GAINE

THERMOLECD22-TFSENSORDUCTSENSORAIR FLOWDEBIT D'AIRSONDE DE SONDE DE DE GAINE

Specification sheet THERMOLEC Electric Heating and Controls Chauffage électrique et contrôles TEL: 514-336-9130 FAX: 514-336-3270 2060, Place Thimen

THREEEASYSTEPSSTEP 1 - (continued)Power and Voltage RequirementsNominal and Standard Supply VoltagesWhile a utility's voltage may be referred to

FEATURES • Back to back thyristors output • Zero crossfired units • Generous heatsink for lower operating temperature • Integrated triggering circui

Specification sheet THERMOLEC Electric Heating and Controls TEL: 514-336-9130 FAX: 514-336-3270 2060, Rue Lucien-Thimens, Montréal Québec, Canada, H4

Specification sheet THERMOLEC Electric Heating and Controls TEL: 514-336-9130 FAX: 514-336-3270 2060, Rue Lucien Thimens, Montréal Québec, Canada, H

Specification sheet THERMOLEC Electric Heating and Controls TEL: 514-336-9130 FAX: 514-336-3270 2060, Rue Lucien-Thimens, Montréal Québec, Canada, H

STEP 1 - (continued)347 (277) V, Single Phase Power SupplyWhen capacities are below 7 KW at 277 V and 8 KW at 347 V Thermolec recommends the use of th

STEP 1 - (continued)THREEEASYSTEPS12345678910111213141516182022242628303234363840 120 208 240 277 347 208 240 416 480 600KWVSelection chart