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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
Heating Contractor
Address
Phone Number
S2
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.
Boiler Model Number
Boiler Serial Number
Installation Date
Part # 790920000 • Publication EH-40-S2 Rev A • Printed in U.S.A. 519
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Related Manuals for Slant/Fin Monitron EH S2 Series
Summary of Contents for Slant/Fin Monitron EH S2 Series
- Page 1 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 .
- Page 2 Monitron S2 Boiler Operation and Installation Instructions DESCRIPTION Multi-zone Balancing The Monitron boiler is a low pressure hot water heating electric boiler. The heat- Raise all zone thermostat settings and verify that all zone valves are ing elements are sheathed resistance type. The heat exchanger is cast-iron. The open (bypass valve should be closed).
- Page 3 Monitron S2 Boiler Operation and Installation Instructions Figure 1 MONITRON "ROUGH-IN" DIMENSIONS Figure 1a STUDS 1. UNIT MAY BE FULLY ENCLOSED IF CLEARANCE FACE TABS UP AND DIMENSIONS ARE RESPECTED. FORWARD. INSTALL 2. DUAL DIMENSIONS ARE INCH [MM] TABS LEVEL 4 9/16 [116] ...
- Page 4 Monitron S2 Boiler Operation and Installation Instructions Table 1. Lug Sizes Distribution Grounding Neutral Lug Model Phase Block Wire Lug Wire Wire Size Size CU-AL† Size CU 1-250 CU EH-24 thru EH-40S2 6-2/0 6-2/0 2/0-250 AL EH-8 thru 20S2 6-2/0 CU-AL 6-2/0 6-2/0 EH-12 thru 40S2...
- Page 5 Monitron S2 Boiler Operation and Installation Instructions Figure 3. Typical Single Zone Piping Figure 4. Typical Multi-Zone using 2-Way Valves Figure 5. Typical Multi-Zone Using 3-Way Valves NOTES: Optional blocking gate valve and hose end valve used (with drain valve) for fast fill and purge of system. IMPORTANT: Close bypass line valve (if used) during purging.
- Page 6 Monitron S2 Boiler Operation and Installation Instructions LINE VOLTAGE (120V) TERMINAL “B” LOCK FOR OUTDOOR THERMOSTAT IF USED OR JUMPERED IF NOT. VOLTAGE (24 V) TERMINAL BLOCK Figure 6. Typical Zoning Valve Wiring MULTIZONING OF BOILER; PUMP ZONING SYSTEM USING R845A RELAY BOILER Figure 7.
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Page 7: Operation
Monitron S2 Boiler Operation and Installation Instructions START-UP OPERATION NOTE: Make sure that all circuit breakers ahead of and at the boiler are OFF. IMPORTANT: DO NOT operate boiler until the following criteria have Fill System been met: See Figures 3 through 5 for suggested purge valve and blocking valve. 1. - Page 8 The boiler warrenty does not cover leaks resulting from corrosion caused by the use of underfloor plastic tubing without an oxygen diffusion barrier. Systems must have the non-oxygen diffusion barrier tubing separated from the boiler with a heat exchanger. Slant/Fin recommends the use of underfloor plastic tubing with an oxygen diffusion barrier.
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