3
TABLE OF CONTENTS
1 - Important Safety Information .........................6
2 - Introduction .................................................... 7
2.1 Installation Requirements .................................... 7
2.2 ANSI/ASME CSD-1. ........................................... 7
2.3 Requirements Massachusetts...................................7
2.4 Use Of A Carbon Monoxide Detector ........................ 7
2.5 Designated Use .................................................... 7
2.6 The Unit Must Not: ............................................... 7
2.7 Operational Features............................................. 7
3 - Component Listing...........................................8
4 - Locating Boiler .............................................. 12
4.1 Boiler Location Considerations..............................12
4.2 Service And Combustible Clearances.....................13
4.3 Wall Mounting....................................................14
5 - Hydronic Piping ............................................. 15
5.1 General ............................................................15
5.2 Special Conditions ..............................................16
5.3 Safety Relief Valve And Air Vent ...........................17
5.4 Trim Piping........................................................18
5.5 System Piping ...................................................18
5.6 External Optional Low Water Cut Off
5.7 Central Heating System ......................................24
5.8 Frost Protection Mode .........................................24
5.9 Pump Protection (Automatic Pump Exercise) ...... 24
5.10 Domestic Hot Water Mode .................................24
5.11 Manufacturer Recommendation - Filter................26
6 - Combustion Air And Vent Piping .................... 27
6.1 General ............................................................27
6.2 Removal Of Existing Boiler From Common Vent
System ..................................................................28
6.3 Fill Condensate Trap With Water ...........................28
........................................................29
6.5 Securing Twin Pipe Polypropylene Venting ......... 29
6.6 Vent Termination ...............................................30
6.7 Approved Venting Materials ................................30
6.8 Approved Polypropylene Manufacturers...................31
6.9 Coaxial Venting Instructions ................................32
6.10 Coaxial Vent Screw Placement ...........................32
6.11 Twin Pipe Systems ...........................................34
6.12 Flexible Vent System .......................................37
6.13 Condensate Piping ............................................39
7 - Gas Supply & Piping ...................................... 40
7.1 General ............................................................40
7.2 Leak Check Gas Piping ........................................41
8 - Electrical Connections ................................... 42
8.1 General ............................................................42
8.2 Electrical Connections .........................................42
8.3 Access To Connection Block .................................43
8.4 Main Supply Connection......................................43
8.5 Install Room Thermostat .....................................44
8.6 Optional Electrical Connections ............................45
8.7 Indirect Storage Tank .........................................47
Wiring Diagrams ............................................ 48-56
9 - Start Up Procedure ................................. 57
9.1 Central Heating System Connections - Heat Only....57
9.2 Central Heating System Connections - Combi ........57
9.3 Gas Conversion .................................................58
9.4 System Start Up ................................................58
9.5 Commission Setup (Electric) ................................59
9.6 Control Panel ....................................................59
9.7 Commission Setup (Gas) ....................................60
9.8 De-Aeration Function (See Figure 9-2) ..................60
9.9 Commissioning ..................................................60
9.10 Combustion Adjustment ....................................62
9.11 Chimney Sweep Function/Manual Co2 Adjust........63
9.12 Check Firing Rate .............................................64
9.13 Adjusting Maximum Heating Power ................. 64
10 - Operating Instructions ................................ 65
10.1 Boiler Sequence Of Operation ............................65
10.2 Testing For Gas Leaks & Purging The Gas Supply...65
10.3 Boiler Controls .................................................66
10.4 Boiler Operation ...............................................78
10.5 Central Heating Mode .......................................78
10.6 Combi Domestic Hot Water Mode .......................78
10.7 Frost Protection ...............................................78
10.8 Pump .............................................................78
10.9 Low Water Pressure Sensor (Internal) ...............78
11 - General Maintenance And Cleaning ............. 79
11.1 Beginning Of Each Heating Season .....................79
11.2 Maintenance And Routine Servicing.....................80
11.3 Component Replacement And Cleaning................81
11.4 Draining The Boiler ...........................................81
11.5 Draining The Heating Circuit ..............................81
11.6 Combi (DHW) ..................................................82
11.7 Cold Water Filter ..............................................82
11.8 Maintenance ....................................................82
11.9 Final Assembly ................................................82
11.10 User Information ............................................83
11.11 Safety Flue Thermostat. ..................................83
11.12 Replacement Parts ..........................................83
11.13 Gasket Kit .....................................................83
12 - Ratings And Capacities ................................ 84
12.1 Ratings And Capacities ......................................84
12.2 Domestic Hot Water Specifications
13 - Troubleshooting............................................86
13.1 Initial Fault Finding Checks................................86
13.2 Error Diagnostics ............................................86
13.3 Error Table for Installer ....................................86
13.4 Errors Codes ..................................................87
13.5 Errors In Fault History Only ..............................89
14 - Glossary ...................................................... 90
PN 240012363 REV. A [08/31/2018]
