Install Instructions

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Table of Contents
4.6 Backflow Preventer...............................................................................................16
4.7 Boiler System Piping Applications.......................................................................16
4.8 Expansion Tank and Makeup Water .....................................................................16
4.8.1 Diaphragm Expansion Tank ........................................................................16
4.8.2 Closed-Type Expansion Tank......................................................................16
4.9 Circulator .........................................................................................................19
4.10 Sizing Primary Piping ...........................................................................................19
4.11 Domestic Hot Water System Piping .....................................................................19
4.12 System Piping - Zone Circulators.........................................................................19
4.13 System Piping - Zone Valves................................................................................19
4.14 System Piping - Through Boiler ...........................................................................19
4.15 System Piping - Radiant Heating..........................................................................19
4.16 System Piping - Special Application ....................................................................20
4.17 System Piping - Multiple Units Installation .........................................................20
SECTION V - Installing Vent / Combustion Air & Condensate Drain
5.1 Installing Vent and Combustion Air .....................................................................24
5.2 Installing Condensate Drain Assembly.................................................................24
SECTION VI - Gas Piping
6.1 Gas Supply Piping Connection .............................................................................26
6.2 Natural Gas .........................................................................................................27
6.2.1 Pipe Sizing...................................................................................................27
6.2.2 Supply Pressure Requirements....................................................................27
6.3 Propane Gas 28
6.3.1 Pipe Sizing - Propane Gas...........................................................................28
6.3.2 Propane Gas Supply Pressure Requirements ..............................................28
SECTION VII - Internal Wiring
7.1 General Requirements...........................................................................................30
7.2 Fuse Locations ......................................................................................................30
SECTION VIII - External Wiring
8.1 Installation Compliance ........................................................................................32
8.2 Line Voltage Connections .....................................................................................32
8.3 Circulator Wiring ..................................................................................................32
8.4 Alarm Wiring ........................................................................................................33
8.5 Low Voltage Connections .....................................................................................33
8.6 Thermostat Wiring ................................................................................................33
8.7 Outdoor Sensor Wiring .........................................................................................34
8.8 Domestic Hot Water Wiring..................................................................................34
8.9 Additional Boiler Limits .......................................................................................34
8.10 External Modulation Control ................................................................................34