Crown Boiler
MWC Series, MWC116ENL, MWC116ELL
manual
Vertical Concentric Vent System Vent Option
Troubleshooting
Install
Error codes
XI Wiring
Dimension
Maintenance
Gas assembly
Service Notes
Page 20
Figure 7.7: Vertical Concentric Vent System (Vent Option 5)
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Contents
MWC Series
Page
Table of Contents
Product Description
Key Component
MWC Boiler Principle Components
II Specifications
Ratings
Maximum Vent Lengths
Other Specifications
III Before Installing
Clearances To Combustible Or Non-combustible Material
Mounting The Boiler
Wall Mounting Hole Locations
Boiler Mounting
VI Air for Ventilation
Page
VII Venting
Vent System Design
Page
Horizontal Concentric Venting Vent Options
3a Crown Concentric 60/100 Vent Components Vent Options 1,2
3b Crown Concentric 80/125 Vent Components Vent Options 3,5
4c 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
Condensate Trap and Drain Line
40 Condensate Piping Arrangement
Viii Gas Piping
Gas Connection To Boiler
IX System Piping
Standard Piping
Basic Piping
Relief Valve Installation
Piping for Special Situations
Internal Boiler Piping
Primary-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
XII Start-up and Checkout
Location of Automatic Air Vent Cap
Location of Circulator Shaft Cover
Control Panel
Page
Inner Cover Removal
For Your Safety Read Before Operating
MWC Series Lighting and Operating Instructions
High Fire Combustion Readings
Xiii Operation
DHW
Heating System Knob
Sequence of Operation Also Refer to Figures 9.7, 9.8, 10.3
See Part XV for Error Codes
Flash Codes During Normal Operation
XIV. Service and Maintenance
Removing Combustion Chamber Cover
Service Notes
Inducer
Condensate Trap Removal
XV. Troubleshooting
No Error Code Displayed
Error Codes
Lamp Number Flame Meaning Corrective Action
Flow 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
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Contents