Slant/Fin Monitron EH S2 Series - User Manual

MODEL EH ELECTRIC BOILER
EH-08-135-S2 through EH-40-135-S2, single phase, 3 wire, 120/208V, 120/240V
EH-12-345-S2 through EH-40-345-S2, three phase, 4 wire, 120/208V, 120/240V
OPERATION AND INSTALLATION INSTRUCTIONS
CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Air Eliminator and Expansion Tanks . . . . . . . . . . . . . . . . . .2
Flow Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Wall Thermostat Flow Switch and Circulator . . . . . . . . . . .2
Typical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Service Connections and Electrical Ratings . . . . . . . . . . . .2
Rough-In Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Electrical Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Typical Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Typical Zone Valve Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Fill System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Air Elimination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Bypass Flow Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . .7
Check for Proper Boiler and System Operation . . . . . . . . .7
Operation (models equipped with seq. control system) . . . . . . .7
Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Appendix A, B, C & D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
IMPORTANT:
This manual must be left with owner and should be hung
on or adjacent to the boiler for reference.
Wiring diagram located on inside front panel.
S2
Heating Contractor
Address
Phone Number
Boiler Model Number
Boiler Serial Number
Installation Date
Part # 790920000 • Publication EH-40-S2 Rev A • Printed in U.S.A. 519

Summary

Operation and Installation Guide

Boiler Description

Overview of the Monitron S2 electric boiler's construction and features.

Boiler Mounting

Instructions for securing the boiler to a wall, ensuring proper clearance.

Piping Requirements

System piping requirements, including air elimination and expansion tanks.

Flow Switch Installation

Mandatory installation guidelines for the flow switch to prevent element burnout.

Bypass Line Installation

Explanation of the required bypass line for system circulation and circulator protection.

Wiring Instructions

Detailed instructions for electrical connections, including thermostats and circulators.

Service Connections and Electrical Specifications

Procedures for connecting power and understanding electrical specifications.

System Dimensions and Specifications

Rough-In Dimensions

Diagrams and measurements for boiler installation placement and clearances.

Electrical Ratings

Table detailing current ratings for single and three-phase models.

Flow Switch Size Selection

Guidance on selecting the appropriate flow switch size for the system.

System Configuration Examples

Typical Piping Diagrams

Illustrations of recommended piping arrangements for single and multi-zone systems.

Typical Wiring Examples

Diagrams illustrating zone valve and pump zoning system wiring.

Operation and Maintenance

Start-Up Procedures

Step-by-step guide to filling the system and initiating boiler operation.

Bypass Flow Adjustment

Procedure for setting the bypass valve for optimal system flow.

Boiler and System Operation Check

Steps to verify proper boiler and system functionality after installation.

Periodic Inspection and Maintenance

Guidelines for regular checks to ensure system health and prevent issues.

Appendices

Appendix A: Thermostat Heat Anticipator Settings

Explanation of how thermostat anticipator settings affect boiler response.

Appendix B: Foreign Deposits in Heat Exchanger

Information on mineral deposits and their impact on boiler efficiency and warranty.

Appendix C: Heater Element Replacement

Instructions for replacing heating elements and gaskets.

Appendix D: Underfloor Tubing Warning

Warning regarding underfloor tubing and its effect on boiler warranty.

Slant/Fin Monitron EH S2 Series Specifications