WarmFlo EMB-H Installation and Operation Manual

ManualsBrandsElectro Industries ManualsBoilers7 kW - 24K BTU - Hot Water Electric Boiler - 240V - 1 Phase

05/19/2016 BI308

Electric

Mini-Boiler

™

HI TEMP MODEL

Installation & Operating

Instructions

EMB-H-5 240-volt, 1-stage 30A CB 4.5 kW 15,000 Btu/h

EMB-H-7 240-volt, 2-stage 45A CB 7 kW 24,000 Btu/h

EMB-H-9 240-volt, 2-stage 60A CB 9 kW 31,000 Btu/h

Application – This Electro-Boiler is factory equipped with WarmFlo smart controller. WarmFlo

automatically regulates outlet water temperature based upon preset, front panel, temperature selection. This

model does not have an outdoor sensor and is not programmed for outlet temperature ramping (outdoor reset

concept). If your application is “outdoor reset”, you should consider using model EB-MO series.

Primary application is any hydronic water heating system (high or low temperature systems) where reduced

flow or radiation can cause overheat conditions (example, zones). However, if it is a mixture of large and small

zones, the sudden capacity and flow changes may cause some internal timing/over temp conditions.

This series is equipped for load management interrupt and can apply to standard baseboard radiation, dual heat

combinations, under floor radiant, wood boiler supplement, etc.

Accessories – Attached BL001 lists various accessory or option items which are not part of basic Electro-Boiler.

Note: This product meets the requirements of the ASME Boiler and Pressure

Vessel Code.

Drawings: BX305

BH310

UAW411

BL001

XX017

Summary of content (21 pages)

PAGE 1
Electric Mini-Boiler ™ HI TEMP MODEL Installation & Operating Instructions EMB-H-5 EMB-H-7 EMB-H-9 240-volt, 1-stage 240-volt, 2-stage 240-volt, 2-stage 30A CB 45A CB 60A CB 4.5 kW 7 kW 9 kW 15,000 Btu/h 24,000 Btu/h 31,000 Btu/h Application – This Electro-Boiler is factory equipped with WarmFlo smart controller. WarmFlo automatically regulates outlet water temperature based upon preset, front panel, temperature selection.
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TABLE OF CONTENTS Description System Components 1 System or Water Flow 1 Modulating Staging Control 2 Zone Controller 2 Safety Temperature Control 2 Room Thermostat Placement 2 Water Flow Calculation 2 Installation Requirements 3 Electric Supply 3 Clearances 3 Mechanical Installation 4 Electrical Hookup 5 Water Fill Procedure 6 Operational Tips 8 Troubleshooting Helps 9 Drawings: 05/19/2016 Page BX305 BH310 UAW411 BL001 XX017 BI308
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GENERAL The basic components for an electric energy heating system typically include: 1. Electric Mini-Boiler itself – covered by this manual. 2. Thermostat hookup control – covered by this manual. 3. Plumbing kit or piping material at the boiler itself – can be ordered as a kit, reference catalog number EMB-PK. a. These items are shown on plumbing installation drawing BX305. 4. Circulating pump – typically sized for head pressure and system flow requirement, typical catalog number EMB-P2. 5.
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MODULATING STAGING CONTROL This model series is factory equipped with a digital supply water sensor and a modulating controller. The controller regulates the elements to maintain a preset operating temperature. The control board has a front panel screwdriver adjustment (see Operational Tips section) for setting the operating temperature point.
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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. WARNING ALL ELECTRICAL WIRING MUST BE IN ACCORDANCE WITH NATIONAL ELECTRIC CODE AND LOCAL ELECTRIC CODES, ORDINANCES, AND REGULATIONS. WARNING OBSERVE ELECTRIC POLARITY AND WIRING COLORS.
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MECHANICAL INSTALLATION 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 BX305 The plumbing components and piping layout shown on drawing BX305 has been very carefully picked and should be plumbed as shown.
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ELECTRICAL HOOKUP Reference drawing BH310 WARNING DISCONNECT ALL ELECTRICAL POWER BEFORE ELECTRICALLY CONNECTING OR SERVICING THE UNIT. FAILURE TO DISCONNECT THE ELECTRICAL POWER BEFORE WORKING ON THIS PRODUCT CAN CREATE A HAZARD LEADING TO PERSONAL INJURY OR DEATH. 1. Panel breaker sizes – based upon the installed unit capacity, cover page shows model number/amps/kW, service from appropriate size panel breaker based on NEC code. 2. The EMB-H model series includes a factory provided circuit breaker.
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 Power robbing thermostats – power robbing thermostats cannot be used with the EMB-H MiniBoiler. 6. Load Management Interrupt Control – this Mini-Boiler product has been pre-wired and designed for a power company load management receiver connection. This should not be altered in any manner! A. Remove blue pigtail wires, wire-nut. B. Extend the blue and blue/white wires to the power company load control device. As shipped, this unit is only equipped for off-peak = N.C. logic.
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6. Open "water supply valve" and open household water supply source. This may be at normal household pressure (4Ø to 6Ø PSI), the auto-fill value regulator keeps the hydronics loop at its proper low pressure. 7. Allow system to circulate, discharging through drain valve, for at least 1Ø minutes. 8. Put your ear against the metal pipe and listen for air bubbles. If the water flow is consistent and quiet, the system is probably purged and water filled. 9. Close the "drain valve". Open the "inlet gate valve".
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OPERATIONAL TIPS 1. Indicator lights – there is a set of four indicator lights on the front cover. Figure 1 is a reproduction of the front decal giving definition and information for using these indicator lights. 2. Boiler power LED indicates 24-volt is present on the control board and is continuous on. Off could mean no 240 power, open manual reset (vessel top), open fuse, or bad transformer. It also indicates supply sensor condition (solid = good, pulse = faulty). 3.
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TROUBLESHOOTING HELPS Inside monitor – there are two red LED’s on the inside labeled “STG1” and “STG2”. Each LED is an indication of stages of boiler on/off. Located near the thermostat connection is a red LED labeled “MANUAL-HL-OK”. This LED represents the 205° manual reset. If on, manual hi-limit is closed. If off, manual hi-limit is open. Sequence  At heat call, pump turns on (control board top cube relay and orange wires).  Elements remain off for 30 seconds.
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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.
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TWO SUPPLY WATER TEMPERATURE REQUIREMENT • Handled as the priority zone on multi-zone (EB-ZEA-1) or two pump (EB-Z2P) controllers • Priority switch on, zone 1 active - TS boiler automatically changes to 150° (or selection 176°) supply water setting • • All other zones are held off With zone 1 satisfied or 60-minute timeout, the boiler automatically returns to the preset temperature and reacts to the other zones Low Temp High Temp Radiant, slab Radiant, staple up Radiant, slab Baseboard Radiant,
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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.
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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.