ELECTRIC MAKE-UP AIR WITH WARMFLO CONTROLLER EM-WM**3** 15 = 15 KW 20 = 20 KW 11 = 10 KW, 3-phase 5 = Single phase, 5 KW per stage 4 = 3-phase, 3-stage 6 = 3-phase, 3-stage H = 8w x 10d L = 8w x 16d Specific Application – forced air duct requiring a temperature rise with a fixed temperature outlet. Reference: EH902 ES502 XX017 NOTE: This manual revision and date pertains to controller chip version 5.00. The controller chip is the plug-in integrated circuit on the PC board with the printed label.
Description This is more than a traditional duct heater. The control box and electric elements may appear to be a standard duct heater, but the internal WarmFlo controller and its companion solid state temperature sensor modulate the duct heater elements to produce a constant outlet temperature at the sensor. This unit applies to forced air ducts (blower within system). Do not install in a fresh air duct which depends upon gravity or building pressure differential flow. See Table 1 for min. CFM.
Clearance – Duct Surface Areas, Duct Installation, Etc. When installed within air handler plenum or furnace/A-coil plenum, the codes and rules relating to clearance apply. When installed in an “inline” duct or round pipe adapter for a general distribution boost heater or air makeup application, observe the following guidelines: 1. This product must be installed in a metal duct, size of the element rack. 2. There shall be no insulation on the inside of this sheet metal duct section. 3.
2. GROUNDING - Route and install the appropriate size ground conductor between the ground lug labeled "GROUND" and building service entrance panel ground buss. This must be a conductor sized according to the total amp rating of the appropriate model. Conduit is not a adequate ground conductor. 3. 24 VOLT SOURCE – Connect the system 24v transformer to “R” and “C”. Typically this is from the Fan Center.
Temperature Set Point The inside circuit board contains a screwdriver switch setting marked Ø through 9. This is usable only for Ø through 7. Unless otherwise specified during the time of order, this unit is equipped with a default “D” chip. This is a broad range temperature with settings at 12° steps. If you would like a more precise temperature setting, the “plug-in chip” can be changed for a temperature range selection. Order a specific temperature range chip code as shown below.
Summer Operation Provisions will need to be made to make sure these elements cannot come on (interrupting Y input) during cooling season. Sequence A. Contact applied to “Y” and “R” terminals. B. Stage 1 (5KW) turns on for at least 10 seconds. C. Based upon temperature at the duct sensor, the electric elements begin modulating or remain full on if temperature is 3° below set point. D. As the temperature rises, the Stage 1 (5KW) begins modulating (full on and then full off during a 10-second interval). E.
Electro Industries, Inc. Limited Product Warranty Effective February 5, 2009 Electro Industries, Inc. warrants to the original owner, at the original installation site, for a period of two (2) years from date of installation, that the product and product parts manufactured by Electro Industries are free from manufacturing defects in materials and workmanship, when used under normal conditions and when such product has not been modified or changed in any manner after leaving the plant of Electro Industries.
THESE WARRANTIES DO NOT COVER: 1. Costs for labor for removal and reinstallation of an alleged defective product or product parts, transportation to Electro Industries, and any other materials necessary to perform the exchange, except as stated in this warranty. Replacement material will be invoiced to the distributor in the usual manner and will be subject to adjustment upon verification of defect. 2.
