ELECTRO-BOILER Midsize INSTALLATION & OPERATING INSTRUCTIONS Model: APPLICATION: EB-M(S or X)-10 EB-M(S or X)-12 EB-M(S or X)-15 EB-M(S or X)-17 EB-M(S or X)-20 This Electro-Boiler is factory equipped with WarmFlo smart controller. WarmFlo automatically regulates outlet water temperature based on a desired output temperature set point. Primary application is any hydronic water heating system where reduced flow or radiation can cause overheat conditions (example, zones).
TABLE OF CONTENTS Description Page Introduction 1 System or Water Flow 2 Multiple Zones & Radiant Temperatures 2 Zone Controller 2 Room Thermostat Placement 3 Two-Temperature Operation or Feature 3 Multiple Boilers 4 Boiler/Plumbing Kit Placement 5 Installation Requirements 5 Mechanical Installation Under-Floor Radiant 7 Dual Heat 8 Electrical Hookup 9 Water Fill Procedure 10 Controller Setup 11 Staging/Modulating Jumper 12 Operational Tips 13 Standby Switchover, SOT Timer
INTRODUCTION With this WarmFlo configuration, the electric heating elements are automatically staged/modulated and controlled to establish a fixed outlet water temperature. This outlet temperature is sensed by the WarmFlo controller and is controlled to achieve and maintain the boiler’s set point temperature.
SYSTEM OR WATER FLOW In order to prevent hi-limiting and assure full 20+ years parts life, the piping system/basic plumbing/circulator pump must be arranged to provide flow greater than minimum GPM shown in Table 1. If zoned system, this applies when the smallest zone is operating. NOTE: Since this is an automatic temperature sensing system, both sensors and the complete control wiring are required before using or turning on this Electro-Boiler.
of the zone controller will provide smoother boiler temperature control. The zone board has a dial switch for each zone and the installer selects one of four zone capacity sizes. When dialing in the size closest to the zone Btu/h capacity, the zone controller smarts only allows the appropriate boiler stage which can handle that capacity. Also this is additive if more than one zone calls at any one time. 3.
MULTIPLE BOILERS This boiler series now includes a method for automatically staging any number of parallel-plumbed boilers. Order plug-in relay EB-C-STG5. The thermostat is connected only to the first boiler, when all stages are on for more than 5 minutes, this new plug-in relay module turns on the next boiler (R and W), and a second EB-C-STG5 could be used to turn on the third, etc. Outdoor Reset Option The EB-MX-** boiler comes equipped with an outdoor sensor (shipped loose).
BOILER/PLUMBING KIT PLACEMENT This model series is wall hung and the vessel must be vertical, drawing BX505. The plumbing kit items are located adjacent to the boiler housing itself as shown on drawing BX505. For future servicing, the unit itself must be installed 18” or more above the floor, the elements are screwed in from the bottom. INFORMATION/WATER FLOW CALCULATIONS Water flow, GPM, can easily be calculated if the temperature rise across the electric boiler can be measured.
3. Remember, safety is the installer’s responsibility and the installer must know this product well enough to instruct the end user on its safe use. Safety is a matter of common sense - - a matter of thinking before acting. Professional installers have training and experienced practices for handling electrical, sheet metal, and material handling processes. Use them.
MECHANICAL INSTALLATION – UNDER-FLOOR RADIATION CAUTION Electro Industries Inc. requires the use of dielectric isolation between the boiler vessel supply and return piping when the boiler is plumbed using copper or any other dissimilar metal. Damage to the vessel caused by galvanic corrosion voids Electro Industries’ warranty. Reference drawing BX505 1. With the typical radiant floor system, a dual heat backup boiler is uncommon.
MECHANICAL INSTALLATION – DUAL HEAT CAUTION Electro Industries Inc. requires the use of dielectric isolation between the boiler vessel supply and return piping when the boiler is plumbed using copper or any other dissimilar metal. Damage to the vessel caused by galvanic corrosion voids Electro Industries’ warranty. Reference drawing BX506 1. Unpack the Electro-Boiler. The safety relief and pipe fittings are packed within a small carton. 2.
ELECTRICAL HOOKUP Reference drawing BH511 1. 240/208 Volt Heating Power – route and install the proper current carrying conductors from service panel fuse or circuit breaker. See Specification Table and/or product nameplate for ratings. These models contain built-in circuit breakers and meet the requirement for local disconnect for appliances greater than 10 kW. Connection is at the circuit breaker terminals. If using single feed method, single feed bus – order part number 5701.
7. Zone Valves or Zone Pumps – see Zone Controller section for options. WARNING THE END SWITCHES FROM THE ZONE VALVES MUST BE AN ISOLATED CONTACT WITH NO VOLTAGE PRESENT ON THESE WIRES OR SCREW TERMINALS. THIS IS VERY IMPORTANT TO MAKE SURE THERE ISN’T ANY INTERFERENCE OR FEEDBACK BETWEEN THE TRANSFORMER OPERATING THE ZONE VALVE SYSTEM AND THE TRANSFORMER WITHIN THIS ELECTRO-BOILER PRODUCT. ONCE THIS HAS BEEN DETERMINED, ALL END SWITCHES ARE SIMPLY PARALLELED WITH THE TWO WIRES GOING TO R AND W. 8.
9. 10. 11. 12. Close the drain valve. Open the inlet gate valve. The cold system pressure at the gauge should be approximately 10 to 14 PSI. Close water supply valve and disconnect water supply. Optional – energize circulating pump during this fill operation. The water pressure from the household system and as plumbed should typically flow through the circulating pump without the pump running. COMMENT: Purge one loop at a time.
Staging/Modulating Jumper The control board on the Midsize Series boiler is a universal controller with the capability of interfacing with many different models of TS Electro-Boilers. The correct setting of this jumper is determined on the model of the boiler you are working with. If you are working with an EB-MS-**, this should be set to STAGING. If you are working with an EB-MX-**, this should be set to MODULATE.
OPERATIONAL TIPS Electric/Standby Switch If this system does not have a standby operating (gas or oil) boiler, this switch must always be in the ELECTRIC position. To activate standby boiler, simply position front panel switch to STANDBY. Front Panel Monitor Lights 190°F AUTO RESET LIMIT, red – this will only illuminate when the vessel hi-limit opens due to excessive high water temperature. This hi-limit is self-resetting. BOILER POWER, green – basically this is illuminated at all times.
Manual Reset Hi-Limit At the top of the vessel there will be either two or three surface mount hi-limits preset at 205° F. There is no light indicator associated with these safety hi-limits. Also these 205° F safety limits break the L2 current carrying 240/208-volt wire going to the elements. Reset involves locating a small shiny lever or metal tab protruding on the side of the black safety limit base. This small tab is pressed inward approximately 1/8” to snap in the contacts.
Replacement Parts WFSB WFS25F EB5623 UFUSE0443 4038KIT 5128C 5535 5537G 5453 5456A 5652 5650 EB5526 5541 04/15/2019 Water sensor (ST), 5 ft. Outdoor sensor (OT), 25 ft.
TROUBLESHOOTING/REPAIR HELPS 1. This WarmFlo controller contains several interference suppression components, but as an electronic logic product, unpredictable and unusual transients or interference may sometimes cause strange results. If the WarmFlo controller is acting strange, one immediate step would be power down reset. Simply turn off boiler power or breaker number 1, when the green LED goes out, count to 1Ø, and re-energize power supply. 2.
OPERATIONAL INFORMATION In order for the installer to completely understand the WF II functions and operational sequence it is recommended to thoroughly read and understand the information below. This knowledge can help in determining settings that can be set according to the end customer’s needs. WarmFlo Analyzer (WF-ANZ*) or PC software (ET-SOFT-HTG) – can be used to verify temperatures.
EB-M*-** MECHANICAL PIPING 2 3 10 7 12 6 5 NO. PART NUMBER 1 EB-M*-** 2 XTEE7060 3 XNPL7780 4 XEL7850 5 XBSH7180 6 #5453 7 #5595 8 XBSH7190 9 #5456A 10 XNPL7781 11 #5591 12 XNPL7783 13 #5503 14 #5548 15 PUMP 16 FLANGE KIT DESCRIPTION QTY.
BOILER ACCESSORIES ZONE CONTROLLER This will simplify your wiring and make zoning applications much easier. In addition, enhanced communicating features have the ability to stage the electric boiler based upon the connected zone capacity.
TWO SUPPLY WATER TEMPERATURE REQUIREMENT • • Handled as the priority zone on multi-zone (EB-ZEA-1) • • All other zones are held off Low Temp Priority switch on, zone 1 active - TS boiler automatically changes to 150° (or selection 176°) supply water setting With zone 1 satisfied or 60-minute timeout, the boiler automatically returns to the preset temperature and reacts to the other zones High Temp Radiant, slab Radiant, staple up Radiant, slab Baseboard Radiant, slab Fan coil Radiant, slab Wa
Electro Industries, Inc. Residential Limited Product Warranty Effective November 1, 2009 Electro Industries, Inc. warrants to the original owner, at the original installation site, for a period of two (2) years from date of original purchase, that the product and product parts manufactured by Electro Industries, Inc.
CONDITIONS AND LIMITATIONS: 1. This warranty is limited to residential, single family dwelling installations only. Any commercial or multi-unit dwelling installations fall under the Electro Industries Commercial Limited Product Warranty. 2. Electro Industries, Inc. shall not be liable for performance related issues resulting from improper installation, improper sizing, improper duct or distribution system, or any other installation deficiencies. 3.
