Electro Industries WF-EM3 Manuel utilisateur

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WARMFLO II

Dual Heat System

Controller Portion of Electro-Mate

WarmFlo Electro-Mate EM-WU*****/EM-WD***** mechanical

information – companion manual EI703/EI707.

Special applications and conditions, see page 23.

When used as a dual heat (backup gas or oil furnace) application, the system

must also include Electro Industries’ furnace interface module (sometimes

called fossil fuel kit).

Use the appropriate colored section for the appropriate furnace interface.

WF-EM3 – non-heat pump, standard A/C Yellow

WF-EZ3 – single speed HP, 4-wire, standard roomstat Green

WF-LGR3 – heat pump manufacturer’s multi-wire stat Blue

(product discontinued)

Note: For 2-speed heat pump, use WF-HP2 (information not contained

in this manual)

Note: The WF-LGR3 is no longer in production, use WF-LGR4 which

has its own installation manual. In other words, this manual is now only

used for conventional, 4-wire, room thermostat application.

Also accompanying each system is a specific control program “chip”. This is typically part of

ordering information and should be listed on packing slip. A listing of these “chip codes” is in the

controller setup or programming sections of this document.

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TABLE OF CONTENTS PAGE

INTRODUCTION 1

INSTALLATION REQUIREMENTS 1

MECHANICAL INSTALLATION 2

WF Furnace Interface 2

EM-WU***** Upflow Application 2

EM-WU*****/EM-WD***** Horizontal Application 2

EM-WD***** Downflow Application 3

WIRINGINSTALLATION 4

HighVoltage 4

LowVoltage 4

Outdoor Sensor (OT) 4

Supply Sensor (ST) 4

WF-EM3 & WF II Wiring & Setup 6

Chip Code:

EMW 7

EMR 8

EMA 9

WF-EZ3 & WF II Wiring & Setup 10

Chip Code:

HPDH 12

HPDF 13

HPEL 14

WF-LGR3 & WF II Wiring & Setup 15

Chip Code:

HPDH 17

HPDF 18

HPEL 19

OPERATION INDICATORS 21

Furnace Interface Module 21

WarmFlo II Controller 21

HANDHELD ANALYZER/LAPTOP SOFTWARE 23

SPECIAL APPLICATION/INSTALLATION 24

For Various Heat Pump, Multi-Speed, Multi-Stage Furnaces, Blower Options, Oil Furnace, etc.

OPTIONAL ACCESSORIES 25

TROUBLESHOOTING 26

OPERATIONAL INFORMATION 27

Drawings Included: HH318, 329, 316

HD320

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INTRODUCTION

Prior to installation we recommend that the installer verify the product intended application is

applicable to your current installation needs. The system application for this model combination is dual

heat, gas or oil furnace as standby, and may include heat pump. If your application does not include dual

heat with standby furnace, but electric heat with an air handler, do not use this WarmFlo II series or this

installation manual. Contact factory for other models (EM-WE series, WF-DH*** kits, etc.).

EM-WU***** – WarmFlo Electro-Mate ranging from 10 kW to 25 kW. Can be installed in upflow

applications only.

EM-WD***** – WarmFlo Electro-Mate ranging from 10 kW to 25 kW. Can be installed in downflow

and horizontal applications.

Caution, Heat Pump Application: Depending upon mechanical positioning and airflow, in all

cases (heat pump) the electric element, Electro-Mate, unit must be on the supply or warm side of

the HP refrigerant coil.

First-time or non-routine user – before attempting installation or setup, suggest studying the last section

of this manual, operational information and terminology definitions. Also if you have not attended a

WarmFlo training session, the document HC321, Application Flowchart, may be of assistance.

In order to verify you have all the components necessary to complete your installation we recommend

you verify that you have both the EM-WU*****/EM-WD***** Electro-Mate heater and the correct

WarmFlo Furnace Interface (I/F) for your application. Heat pump manufacturer’s fossil fuel kit is not

used with WF II.

WarmFlo Furnace Interface (I/F) – All dual fuel installations require a furnace interface (I/F) module,

which is typically a second line item on the order sheet. Depending upon overall system configuration

one of the following furnace interface modules is required and covered by this product manual.

-WF-LGR3 – HP manufacturer’s multi-wire room thermostat – heat pump, EM-WU, EM-

WD, gas/oil combination.

-WF-EZ3 – standard 4-wire thermostat – heat pump, EM-WU, EM-WD, gas/oil system.

-WF-EM3 – standard 4-wire non-heat pump, with or without standard air conditioning.

**Installation Notice - Upon installation it is necessary that all the components of the heating system are

in place and functional. This controller is designed to operate the complete heating system - heat pump,

backup furnace (gas or oil), Electro-Mate, room thermostat, WF outdoor sensor, etc. If one of these

components is missing or not initially installed, improper performance of WarmFlo II and the system may

be experienced. In other words, if the gas furnace doesn’t exist, LP tank not yet installed or filled, and the

WarmFlo II is operating on a cold day; do not be disappointed if there is no heat.

Warranty/Checkout – Attached to this manual is a warranty certification and checkout procedure. This

must be completed and returned for warranty coverage.

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 Code and local electric codes,

ordinances, and regulations.

3. Observe electric polarity and wiring colors. Failure to observe could cause electric shock and/or

damage to the equipment.

4. This unit can only be used for its intended design as described in this manual. Any internal wiring

changes, modifications to the circuit board, modifications or bypass of any controls, or installation

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practices not according to the details of this manual will void the product warranty, the ARL

certification label, and manufacturer product liability. Electro Industries, Inc., cannot be held

responsible for field modifications, incorrect installations, and conditions which may bypass or

compromise the built-in safety features and controls.

5. The only approved installation for this Electro-Mate series is upflow and horizontal furnace and

above or downstream from the air conditioning or heat pump A-coil. Any other configuration or

furnace plenum/ducting installation voids warranty and manufacturers product liability.

MECHANICAL INSTALLATION

WF Furnace Interface I/F (WF-EZ3, WF-LGR3, WF-EM3)

The mounting location of this enclosure is flexible to any convenient location were the thermostat

connection is easily accessible. The distance between the I/F and WF II is limited only by the 4’ cable

provided with the I/F.

The housing has also been arranged for easy attachment directly to the right side of the Electro-Mate

cabinet. Depending upon furnace surroundings, you can explore mounting this interface enclosure

directly to the Electro-Mate, right cabinet end.

EM-WU***** Electro-Mate Upflow Application

Electro-Mate nameplate or companion installation manual EI703 is required for correct mechanical

installation. If you do not have manual #EI703 do not attempt to do the mechanical installation, contact

the factory for a replacement manual. The primary installation concerns focusing on the existing furnace

and ducting system’s airflow capacity and necessary plenum baffling required by the specific Electro-

Mate for correct installation. It is true that the WarmFlo II modulating control and the supply sensor

adjust the electric heat or element capacity based upon temperature. But if you do not have the required

CFM airflow (example 20 kW, 1400 CFM), you could have a situation where you cannot heat the house.

Another even more serious situation (because of improper airflow) is when all stages are on at colder

temperatures and the unit is cycling on mechanical safety hi-limit. When cycling on the hi-limit probe,

the WarmFlo II supply sensor basically gets confused because at one point it is way up in temperature and

then the elements simply disappear and it dips down, the net result probably is switching over to standby

at premature intervals. There is no substitute for adequate airflow capacity and plenum baffling.

EM-WD***** Electro-Mate Horizontal Application

NOTE: It is not permissible to rotate the WarmFlo Electro-Mate 180°. These instructions apply to only

rotating the Electro-Mate unit 90°.

With WarmFlo, IT IS permissible (and authorized by the manufacturer) to turn the Electro-Mate unit 90°

for horizontal application. However, you must follow the instructions below relating to temperature

sensor positioning, etc.

The reason this practice is acceptable is because the element power and temperature is controllable by the

WarmFlo sensor. When placing the sensor at the top of the duct as stated below, heat rise will keep the

elements off even without the blower.

Installation steps

•Ideally, the WF II Electro-Mate should be inserted on an appropriate duct side so that the circuit

breakers are at the bottom.

•Locate the WF II Electro-Mate as high as possible in the horizontal duct. At the top, the elements

should almost touch the top of the duct.

•If the vertical dimension of the horizontal duct is greater than the WF II Electro-Mate element

area, baffle at the bottom.

•If the horizontal duct is deeper than the electric elements, baffling at the back is required.

•Locate and install the WarmFlo duct sensor approximately 4” down from the duct top and 12”

away from the Electro-Mate elements.

•Checkout and operation should be identical to standard WarmFlo system.

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EM-WD***** Electro-Mate Downflow Application

Electro-Mate nameplate or companion installation manual EI707 is required for correct mechanical

installation. If you do not have manual #EI707 do not attempt to do the mechanical installation, contact