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Summary of Contents for RenewAire EK Series
- Page 1 EK SERIES Electric Duct Heater Installation, Operation and Maintenance Manual EK Series for Commercial Indoor Applications EK Series shown...
- Page 2 ACCESSORY EK-Series Electric Duct Heater WARNING CAUTION Arc flash and electric shock hazard Risk of contact with HOT SURFACES Arc flash and electric shock hazard. Disconnect all electric This heater, including the heating elements and their support power supplies, verify with a voltmeter that electric power structure are extremely hot during operation.
- Page 3 Record information as shown below. In the unlikely event that factory assistance is ever required, this information will be needed. Locate the RenewAire unit label, found on the door of the electric duct heater. NOTE: This information is for purposes of identifying the specific furnace. Unit-specific option data can then be obtained, as needed, from the Model Number.
- Page 4 AIR DUCT SLIP-IN FLIPPABLE CONSTRUCTION SHOWN CAPABILITIES BASE HEATER Unique to the EK series, this unit has the ability to flip 180°. Additionally, EK heaters features both vertical up and vertical down airflow. BASE HEATER BASE HEATER * ONE HEATER- 4...
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Page 6: Table Of Contents
TABLE OF CONTENTS ACCESSORY EK-Series Electric Duct Heater 6.0 OPERATING INSTRUCTIONS 1.0 OVERVIEW 1.1 DESCRIPTION ............11 6.1 ELECTRICAL REQUIREMENTS ........28 1.2 ELECTRICAL SUPPLY ..........11 6.2 GENERAL OPERATING REQUIREMENTS ....28 1.3 HEATER CAPACITY IN KILOWATTS ......12 7.0 MAINTENANCE 1.4 HEATER ELEMENTS ..........12 7.1 SERVICE PARTS ............29 1.5 SAFETY FEATURES ..........12 1.5.1 Airflow Switch ..............12... - Page 7 TABLE OF CONTENTS EK-Series Electric Duct Heater ACCESSORY TABLE OF ILLUSTRATIONS Figure 1.1.0 Electric Heater (typical) ....................... 11 Figure 1.1.1 Control Panel Cover......................11 Figure 1.1.2 Basic Control Panel ......................11 Figure 1.5.0 Heater Controls Identification ..................... 12 Figure 1.7.0 Heat Rise Calculation ......................13 Figure 2.7.0 FPM vs.
- Page 8 ACCESSORY EK-Series Electric Duct Heater ELECTRIC DUCT HEATER CONFIGURATION CODE Each RenewAire Electric Duct Heater is assigned a 25 digit Model Number. The Model Number can be used to identify the various options as ordered by the customer. MODEL NUMBER...
- Page 9 Horizontal (Standard)—heater installed Control Voltage: where airflow in ductwork is horizontal 24 VAC (Standard)—secondary voltage through the heater. Vertical (Option)—heater installed where airflow in ductwork is vertical through the heater. Vertical up and down airflow available in EK series 1.800.627.4499...
- Page 10 CONFIGURATION CODE ACCESSORY EK-Series Electric Duct Heater Control Type: Pilot Light Option: Duct Thermostat with sensor—standard Light to indicate heater energized. Control thermostat with on/off control. Sensor voltage same as transformer secondary is duct mounted. Thermostat must be voltage (24 VAC). programmed by installer for the number Airflow Switch: (Standard) of stages.
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Page 11: Overview
OVERVIEW EK-Series Electric Duct Heater ACCESSORY 1.0 OVERVIEW 1.1 DESCRIPTION The model EK electric duct heater is an open-coil type heater for indoor installation only. Multiple voltages and heater sizes are offered. A number of different control options are offered. FIGURE 1.1.0 ELECTRIC HEATER (TYPICAL) FIGURE 1.1.1 CONTROL PANEL COVER FIGURE 1.1.2 BASIC CONTROL PANEL... -
Page 12: Heater Capacity In Kilowatts
OVERVIEW ACCESSORY EK-Series Electric Duct Heater 1.3 HEATER CAPACITY IN KILOWATTS Electric heater capacity is based on kilowatts (kW). Electric heaters are nearly 100% efficient, so output capacity equals input capacity. Heaters are available in capacities from 1 - 175 kW. 1.4 HEATER ELEMENTS A choice of two different types of heater elements is offered: either 60–20–20 Ni–Cr –Fe with nickel plated terminal pins (standard) or 80-20 Ni-Cr with stainless steel terminal pins. -
Page 13: Heater Control
OVERVIEW EK-Series Electric Duct Heater ACCESSORY 1.6 HEATER CONTROL Electric duct heaters are configured with either staged or modulating control. The options available are: Single Stage 2-stage 4-stage Single stage control is when all heating elements are energized simultaneously. Single stage control can be either simple ON/OFF or modulating. -
Page 14: System Requirements
SYSTEM REQUIREMENTS ACCESSORY EK-Series Electric Duct Heater 2.0 SYSTEM REQUIREMENTS 2.1 GENERAL OPERATING REQUIREMENTS Minimum Air Velocity: 70 CFM per KW (75-80 Recommended) Maximum Inlet Air Temp: 100 Deg. F [37.80 C] Maximum Heater KW: 30 kW per square foot of heater cross section. 2.2 SIZING AN ELECTRIC DUCT HEATER An electric duct heater can be sized from the following information: Duct Width (W") and Duct Height (H") -
Page 15: Minimum Air Velocities
SYSTEM REQUIREMENTS EK-Series Electric Duct Heater ACCESSORY 2.7 MINIMUM AIR VELOCITIES The minimum uniform airflow in a duct heater is directly related to the inlet air temperature. Consideration must be given to both airflow across the heater and inlet air temperature, (shown below). -
Page 16: Heater Placement
PLACEMENT ACCESSORY EK-Series Electric Duct Heater 3.0 HEATER PLACEMENT 3.1 GENERAL INC. A duct heater must be installed according to the installation instructions, wiring diagram and 500 GOULD DRIVE COOKEVILLE, TN 38506 labeling supplied with the heater. FAX (931)432-4140 PHONE (931)432-4141 ELECTRIC DUCT HEATER Listed below are some important items when installing an electric duct heater: TROUBLESHOOTING GUIDE... -
Page 17: Figure 3.1.3 Placement: Transition Requirements
present at all points over the heater face. (see fig. 1) HEATER FIG. 2 HEAT PUMP OR DUCT PLACEMENT THE AIR MUST BE FILTERED. AIR CONDITIONER The incoming air must be free from all debris, 48" MIN. combustible particles, and hazardous vapors. EK-Series Electric Duct Heater ACCESSORY ALWAYS LOCATE THE HEATER AT LEAST 24"... -
Page 18: Figure 3.1.7 Placement: Obstruction Requirements
13. NEVER INSTALL A HEATER NEAR A DOUBLE AIR FILTER a double blower outlet that even and proper HEATER 13. NEVER INSTALL A HEATER NEAR A DOUBLE BLOWER OUTLET. 48" MIN. FIG. 6 airflow is present or separate duct heaters HEATER DUCT BLOWER OUTLET. -
Page 19: Electrical Data
ELECTRICAL DATA EK-Series Electric Duct Heater ACCESSORY 4.0 ELECTRICAL DATA 4.1 TYPICAL CONTACTOR POWER CIRCUITRY (Only power circuit shown, safety devices etc., omitted) DISCONNECTING TYPE: DISCONNECTING TYPE: CONTACTOR SINGLE PHASE SINGLE PHASE CONTACTOR SINGLE SINGLE HEATING HEATING PHASE PHASE ELEMENT ELEMENT SUPPLY SUPPLY... -
Page 20: Heater Wiring Schematics
ELECTRICAL DATA ACCESSORY EK-Series Electric Duct Heater 4.3 HEATER WIRING SCHEMATICS NOTE: See low voltage control connections, pages 23-25, for external control wiring. FIGURE 4.3.0 SINGLE PHASE ON-OFF HEATER WIRING NOTE: See low voltage control connections, pages 23-25, for external control wiring. -
Page 21: Figure 4.3.2 Three Phase On-Off Heater Wiring
ELECTRICAL DATA EK-Series Electric Duct Heater ACCESSORY NOTE: See low voltage control connections, pages 23-25, for external control wiring. FIGURE 4.3.2 THREE PHASE ON-OFF HEATER WIRING NOTE: See low voltage control connections, pages 23-25, for external control wiring. FIGURE 4.3.3 THREE PHASE SCR HEATER WIRING 1.800.627.4499... -
Page 22: Low Voltage Control System
ELECTRICAL DATA ACCESSORY EK-Series Electric Duct Heater WARNING RISK OF FIRE, ELECTRIC SHOCK, OR INJURY. OBSERVE ALL CODES AND THE FOLLOWING: 1. Before servicing or cleaning the heater, 3. Installation work and electrical wiring switch power off at disconnect switch must be done by qualified professional(s) or service panel and lock-out/tag-out to in accordance with all applicable codes,... -
Page 23: Low Voltage Controls Connection
ELECTRICAL DATA EK-Series Electric Duct Heater ACCESSORY 4.5 LOW VOLTAGE CONTROLS CONNECTIONS These heaters may be ordered with factory-supplied thermostats. NOTE: Installation details for Electric Duct Heaters equipped with SCR's or Electronic Step Controllers (Including SCR Vernier Control) This heater is designed to accept an analog control signal. The heater will need to be supplied with either a 0(2) to 10 VDC or a 4 to 20 mA signal. -
Page 24: Electronic Step Controller Or Scr Control
ELECTRICAL DATA ACCESSORY EK-Series Electric Duct Heater 4.5.2 Electronic Step Controller or SCR Control FIGURE 4.5.3 VICONICS ROOM VICONICS VT7225 ROOM DUCT HEATER NOTE: See doc- THERMOSTAT SIGNAL INTERFACE THERMOSTAT WITHOUT MODULE umentation with 24 VAC REMOTE SENSOR FOR thermostat for COMMON MODULATING CONTROL: complete installation... -
Page 25: Staged Control
ELECTRICAL DATA EK-Series Electric Duct Heater ACCESSORY 4.5.3 Staged Control FIGURE 4.5.6 SINGLE STAGE DUCT HEATER TERMINAL VICONICS VT7200 ROOM THERMOSTAT WITH BLOCK THERMOSTAT 24 VAC REMOTE SENSOR FOR ON/ COMMON OFF CONTROL: Use this AUX BO 5 NOTE: See doc- AUX BO 5 schematic to control a single umentation with... -
Page 26: Installation
At least 4 feet upstream from a humidifier. DISCLAIMER Model EK duct heaters offered by RenewAire are not to be installed in, on, or directly attached to any equipment and further must be installed according to the installation instructions shipped with each and every duct heater. -
Page 27: Duct Installation
INSTALLATION MANUAL INSTALLATION MANUAL INSTALLATION TUTCO DUCT HEATERS TUTCO DUCT HEATERS EK-Series Electric Duct Heater ACCESSORY The information and instructions in this sheet apply to Duct Heater The information and instructions in this sheet apply to Duct Heater models for zero clearance installation in ducts. models for zero clearance installation in ducts. -
Page 28: Operating Instructions
START-UP ACCESSORY EK-Series Electric Duct Heater 6.0 OPERATING INSTRUCTIONS WARNING 6.1 ELECTRICAL REQUIREMENTS This electric duct heater Refer to attached wiring diagram and wiring diagram on inside of cover. Make sure line and is intended for heating control voltage of system matches that noted on wiring diagram. general ventilation air only. -
Page 29: Maintenance
EK-Series Electric Duct Heater ACCESSORY 7.0 MAINTENANCE WARNING All RenewAire heaters are designed to be maintenance free and operate for a long time without DO NOT ATTEMPT TO problems. CLEAN OR SERVICE WITH- The following are a few steps that are recommended: OUT DISCONNECTING ALL 1. - Page 30 Electric Duct Heaer, make sure that you have the information called for in the Unit Records page in the Owner Information section of this manual. The person you speak with at the factory will need that information to properly identify the unit and the installed options. TO CONTACT RENEWAIRE CUSTOMER SERVICE: CALL 800-627-4499 EMAIL: RenewAireSupport@RenewAire.com...
- Page 31 EK-Series Electric Duct Heater ACCESSORY T H I S P A G E I S I N T E N T I O N A L LY L E F T B L A N K . THIS PAGE IS INTENTIONALLY LEFT BLANK 1.800.627.4499...
- Page 32 About RenewAire For over 30 years, RenewAire has been a pioneer in enhancing indoor air quality (IAQ) in commercial and residential buildings of every size.This is achieved while maximizing sustainability through our fifth-generation, static-plate, enthalpic-core Energy Recovery Ventilators (ERVs) that optimize energy efficiency, lower capital costs via load reduction and decrease operational expenses by minimizing equipment needs, resulting in significant energy savings.
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