installation manual

05/15/2009 2 EI709
Introduction
The intended application for this product is summarized on the cover page. If this does not fit your
application needs or HVAC system design, do not modify or attempt to use this model other than its
designed and intended usage. Electro Industries manufactures other products which may fit your
requirement, example:
 Electro-EZ-Mate – 10 kW only, 5 kW load shed
 Basic plenum heater, without WarmFlo – EM-LV or EM-LD Series
 Plenum heater, HeatChoice – EM-EU or EH-***-*
 Basic duct heater – EM-WE or EM-DI Series
 Electric furnace – HE-*-**-**
When installed according to this installation manual and inspected by your local power company
representative, your dual heating system may qualify for special off-peak electric or dual fuel kWh rates.
Easy and direct connection for the utility load control receiver, both winter and summer control.
This repackaged model series includes the basic, patented, WarmFlo Select mechanical design – type of
element, element position, directed airflow, enclosure cooling plate, approved zero clearance A-coil or
furnace, etc. In addition, this WarmFlo Select has a special controller which allows for simplified control
wiring, easy heat pump or furnace interface.
 Smart controller, fully automatic
o Outdoor and warm air temperature sensing
o Electric element modulation, increased comfort and uniform heating
o Electric element modulation, minimum resistant element usage
o One room thermostat, entire system
o Controls and reacts with heat pump, tempers output for comfort and total season heating
o Controls and interacts with any gas/oil furnace, single or staging burner
o Applicable to single and ECM variable speed furnace blowers
o Installer setup switch, selects heat pump or non-HP, etc.
Dual heat – since this is in addition to a gas or oil forced air furnace and ducting system, the furnace
system must be installed complete and in good working (gas in tank) condition prior to energizing or
using this WarmFlo Select – furnace itself, heat pump (or AC), gas supply, permanent wired room
thermostat, WarmFlo sensors, completed ducting system with proper filter, etc. There are certain
interacting functions within the WarmFlo Select controller, if the total system does not respond correctly
it may lock up and there could be a loss of heating.
Heat pump only – if there is no gas or oil furnace, setting the mode switch to “no gas” will prevent
potential lock-up.
NOTE: This installation and operating manual is the property of the equipment purchaser and should
remain with the installed unit. If the installing contractor desires other copies, access Electro Industries’
documentation channel.
For information, this unit is rated at 240VAC, single phase. When operating at lower source voltage, the
output is reduced, example 208VAC, a 20 kW unit is effectively only 15 kW.
Warning: To properly maintain the 20-year specified warranty conditions of this WarmFlo
Select unit, correct installation within the furnace plenum is required. This installation manual
provides the necessary details, the installing contractor has the responsibility to install as detailed
and test this unit to verify proper airflow, non-hi-limiting conditions, etc.