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Electro Industries HeatChoice EH Series Manual

Electric plenum heater
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HeatChoice
NOTE: This manual covers both upflow and downflow, study and follow the appropriate section.
APPLICATION:
·
DUAL HEAT – COMBINE THIS ELECTRIC PLENUM HEATER WITH
STANDBY GAS OR OIL FURNACE
·
WITH OR WITHOUT STANDARD AIR CONDITIONING
·
STANDARD FURNACE BLOWER OR VARIABLE SPEED BLOWER
·
NON-HEAT PUMP
·
FURNACE FAN CENTER, WIRING BOARD EQUIVALENT, REQUIRED
This model is also the best choice for total electric conversion or wood furnace (see appropriate section in this
installation manual).
Drawings:
EA107
EA111
EH101
EC001
ES201
08/30/2007
Electric Plenum Heater
EH-*** - *
U = Upflow
D = Downflow
kW
05 = 5 kW
10 = 10 kW
15 = 15 kW
20 = 20 kW
25 = 25 kW
U.S. and Canadian patent apply
No. 4,593,176 and No. 1,177,512.
TM
Width
8 = 18"
5 = 15"
EI203

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Summary of Contents for Electro Industries HeatChoice EH Series

  • Page 1 HeatChoice Electric Plenum Heater EH-*** - * U = Upflow D = Downflow Width 05 = 5 kW 8 = 18” 10 = 10 kW 5 = 15” 15 = 15 kW 20 = 20 kW 25 = 25 kW U.S.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Introduction Installation Requirements Specifications Mechanical Comments Mechanical Installation Steps – Upflow Mechanical Installation Steps – Downflow Mechanical Installation Steps – Horizontal Electrical Hookup Power On, Startup Operational Tips Manual Reset Additional Applications Drawings EA107 EA111 EH101 EC001 ES201 UAI012 08/30/2007...

  • Page 3: Introduction

    INTRODUCTION The Power of Choice is encouraging many homeowners to build versatility and flexibility into their heating system. When used and controlled properly, electric heat can save you hundreds of dollars per year. To meet this Power of Choice need, this HeatChoice series plenum heater is very versatile with a variety of applications. This is a prewired package for converting a new or existing oil, gas, or solid fuel furnace to a dual heat or total electric heating system.

  • Page 4: Installation Requirements

    INSTALLATION REQUIREMENTS 1. All installation work must be performed by trained/ qualified, contractors or technicians. Electro Industries, Inc., sponsors installation and service schools to assist the installer. Visit our web site at electromn.com for upcoming service schools. 2. All electrical wiring must be in accordance with National Electric Codes and local electric codes, ordinances, and regulations.
  • Page 5 MECHANICAL The HeatChoice is designed to control or compensate for certain airflow problems inherent with tight spacing residential forced air furnace systems. However, the HeatChoice cannot produce airflow and cannot correct airflow problems inherent within the existing furnace system. The following eight items should be carefully considered and properly followed for all installations: 1.
  • Page 6 Comment – zone dampers cause back pressure on the blower and overall reduced airflow. The HeatChoice elements should be staged according to the heating load required by the various zone combinations. The Electro Industries’ WarmFlo series plenum heater is designed for zone systems and should be investigated for forced air zone applications.

  • Page 7: Mechanical Installation Steps Upflow

    MECHANICAL INSTALLATION STEPS UPFLOW NOTE: For maximum performance and maximum element life, this unit must be installed in the furnace hot air plenum such that there is uniform airflow across each element and maximum airflow across the entire element surfaces. If all the previous two pages have been verified the actual installation involves the following steps: 1.

  • Page 8: Mechanical Installation Steps Downflow

    MECHANICAL INSTALLATION STEPS DOWNFLOW NOTE: Please refer to drawing EA104, revision E or newer for proper placement of the HeatChoice unit when an A/C coil is installed. 1. If the DOWNFLOW furnace is setting directly on the floor, the furnace will have to be raised for insertion of the HeatChoice unit.

  • Page 9: Mechanical Installation Steps Horizontal

    MECHANICAL INSTALLATION STEPS HORIZONTAL 1. Basically this involves a downflow unit (EH-D***) turned 9Ø° with the plenum instruction and rules common to the upflow unit. 2. The key is to observe the “AIRFLOW” arrow and allowing for gravity temperature rise, making sure there is a probability for the hi-limits sensing at an upper point in case of airflow failure.

  • Page 10: Electrical Hookup

    ELECTRICAL HOOKUP Note: All heat/cool functions for this dual heat system originate from a standard 4-wire (heat/cool) room thermostat. Do not install with a 2-stage heat/1-stage cool or a heat pump room thermostat. Also do not install using two individual thermostats. 1.

  • Page 11: Power On, Startup

    3. Check blower current, compare to nameplate reading and verify blower motor is not being overloaded. 4. Complete the warranty certification form and return to Electro Industries, address or fax shown. 5. Recheck all electrical connections and screws for tightness, including factory wiring.

  • Page 12: Operational Tips

    OPERATIONAL TIPS 1. MANUAL HI-LIMIT RESET – Located behind the hinged control board door is a 250°F manual reset. This breaks the circuit for all electric elements. However, connected in the same circuit loop is the automatic reset 170°F hi-limit. Normally the automatic reset should always take care of any overheat condition prior to popping the manual reset.

  • Page 13: Additional Applications

    6. SPECIAL STANDBY FURNACE AND CERTAIN PLENUM WIDTH CONDITIONS - As we continue gathering installation experience, we are seeing several over temperature situations reoccurring. The intent of this paragraph is to provide additional help for four specific plenum conditions: a. Large burner pot oil furnace with the HeatChoice installed less than about 6" from the top of the heat exchanger/fire pot.
  • Page 14 2-stage or variable burner gas – most furnaces ignore or do not take W2 (or Rhuud “V”) action unless there is an input to W1. This means you can take a wire directly from 2-stage heat roomstat W2 to the furnace W2 and until the system is switched over to standby with the HeatChoice control board activating W1 there should be no furnace action.

  • Page 15: Ea107

    Notes: Dist. Dist. 10" MINIMUM FROM Duct 1. If horizontal distribution is TOP OF EM CUTOUT Duct not equal, increase to 14". 2. Electro-Mate hole opening - 8" x 15" or 8" x OFFSET TAKEOFF CAN BE CORNER MUST BE ELECTRO-MATE 3"...
  • Page 25 TWENTY YEAR (20) LIMITED WARRANTY ON SPIN FIN ELEMENTS Electro Industries, Inc. warrants that the spin fin elements of its products are free from defects in materials and workmanship through the twentieth year following date of installation. If any spin fin elements are found to have a manufacturing defect in materials or workmanship, Electro Industries will replace them.
  • Page 26 7. Replacement of a product or product part under this limited warranty does not extend the warranty term or period. 8. Before warranty claims will be honored, Electro Industries shall have the opportunity to directly, or through its authorized representative, examine and inspect the alleged defective product or product parts.

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