Crown Boiler MWC116ENT, MWC Series, MWC116ENL, MWC116ELL, MWC116ELT manual Table of Contents

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Table of Contents

I.	Product Description	2
II.	Speciﬁcations	4
III.	Before Installing	5
IV.	Locating The Boiler	5
V.	Mounting The Boiler	7
VI.	Air For Ventilation	10
VII.	Venting	12
A. Vent System Design		12
B. Removing An Existing Boiler From Common Chimney		19
C. Assembly of Crown 60/100 Concentric Venting		20
D. Assembly of Crown 80/125 Concentric Venting		24
E. Condensate Trap and Drain Line		33
VIII.	Gas Piping	34
IX.	System Piping	36
X.	Domestic Water Piping	43
XI.	Wiring	46
XII.	Start-up and Checkout	51
XIII.	Operation	58
XIV.	Service and Maintenance	62
XV.	Troubleshooting	66

XVI. Parts	69
Appendix A Special Requirements For Side-Wall	84
Vented Appliances In The Commonwealth
of Massachusetts

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Contents MWC Series Page Table of Contents Key Component Product DescriptionMWC Boiler Principle Components Other Speciﬁcations II SpeciﬁcationsRatings Maximum Vent LengthsIII Before Installing Clearances To Combustible Or Non-combustible Material Mounting The Boiler Wall Mounting Hole Locations Boiler Mounting VI Air for Ventilation Page Vent System Design VII VentingPage Horizontal Concentric Venting Vent Options 3b Crown Concentric 80/125 Vent Components Vent Options 3,5 3a Crown Concentric 60/100 Vent Components Vent Options 1,24c Positioning Vent Terminal Under Overhangs Vent/ Air Intake Fitting Equivalent Length Vertical Concentric Vent System Vent Option Removing an Existing Boiler From a Common Chimney All cuts are square and allow for proper insertion 21 Dimension L 22 Cutting Outer Pipe 25 Attaching 60/100mm Terminal Section 30 Installation Of 80/125 Adaptor On Boiler 31a Cuttable Straight Section 32 Cutting Straight Pipe 33a Joining Cuttable Pipe 34a Dimension L, 80/125mm Horizontal Terminal 34c Cutting Inner Pipe Of 80/125mm Horizontal Terminal 35a Dimension H 35b Cutting Vertical Terminal 36 Chimney Chase Installation 40 Condensate Piping Arrangement Condensate Trap and Drain LineViii Gas Piping Gas Connection To Boiler Standard Piping IX System PipingBasic Piping Relief Valve Installation Internal Boiler Piping Piping for Special SituationsPrimary-Secondary Piping MWC116E*T Combi Internal Boiler-Side Piping Schematic MWC116E*L Heat-Only Internal Piping Schematic Domestic Water Piping DHW Piping MWC116E*T Combi Internal DHW-Side Piping Schematic XI Wiring Field Supplied Box End Boiler End Location of Terminal Blocks and 7/8 Hole for Whip Field Wiring 120VAC Thermostat Internal Boiler Wiring Location of Automatic Air Vent Cap XII Start-up and CheckoutLocation of Circulator Shaft Cover Control Panel Page Inner Cover Removal MWC Series Lighting and Operating Instructions For Your Safety Read Before OperatingHigh Fire Combustion Readings DHW Xiii OperationHeating System Knob Sequence of Operation Also Refer to Figures 9.7, 9.8, 10.3 Flash Codes During Normal Operation See Part XV for Error CodesXIV. Service and Maintenance Removing Combustion Chamber Cover Inducer Service NotesCondensate Trap Removal No Error Code Displayed XV. TroubleshootingLamp Number Flame Meaning Corrective Action Error CodesFlow Chart for Isolating Limit and APS Errors See Table XVI Parts Flow group and three way diverter valve Model combi Flow and return groups Model c.h. only Pump and main circuit assembly Model combi Pump and main circuit assembly Model c.h. only Gas assembly Connection pipes Control panel and ignition device Model combi Control panel and ignition device Model c.h. only Wiring Model combi Wiring Model c.h. only Fan, combustion chamber and case panels Description Spare part code Description Spare part code Description Spare part code Installation of Carbon Monoxide Detectors Approved Carbon Monoxide Detectors 11/07