Installation / Operation Instruction Manual
Table Of Contents
- Cover
- TABLE OF CONTENTS
- General Information
- SECTION 2 Venting and Combustion Air
- SECTION 3 Gas supply and Piping
- SECTION 4 Water Flow and Headloss Data
- SECTION 5 Boiler Piping
- SECTION 6 Condensate Drain Trap
- SECTION 7 Electrical Connections
- 7.A Installation Warnings
- 7.B Main Power Connections
- 7.C Main Power Data
- 7.D Control Panel Layout
- 7.E Field Connections
- 7.E.1 Power
- 7.E.2 Dry Contacts
- 7.E.3 Temperature Sensors
- 7.E.4 Safety Chain
- 7.E.5 Isolation Valve
- 7.E.6 Heat Demands
- 7.E.7 Analog In and Analog Out
- 7.E.8 Dry Contacts. Run & Alarm
- 7.E.9 RS 485 for Cascade (Lead Lag)
- 7.E.10 RS485 BMS
- 7.F Modbus to BACnet Memory Map (4 pages)
- 7.G WiringDiagram
- 7.H High Voltage Wiring Diagrams (5 pages)
- 7.I Ladder Diagrams (8 pages)
- SECTION 8 Control Operation
- 8.A The Home Screen
- 8.B Login to Lock / Unlock the Display Screen
- 8.C Quick Start
- 8.D Configuration
- 8.E Service Screens
- 8.E.1 Burner
- 8.E.2 Digital I/O ( Input / Output )
- 8.E.3 Analog I/O
- 8.E.4 Screen Settings Timeout
- 8.E.5 History
- 8.E.6 Restart Touchscreen & Recalibrate
- 8.E.7 Factory Reset
- 8.E.8 HMI Model OEM only
- 8.E.9 BIC Model OEM only
- 8.E.10 Both Model. OEM only.
- 8.E.11 About (the Firmware)
- 8.E.12 O2 (Trim Set Point)
- 8.E.13 LMV
- 8.F Messages and USB
- 8.G Active Demands
- SECTION 9 Parameter Tables (3 pages)
- SECTION 10 Initial startupInstructions
- SECTION 11 Maintenance
- SECTION 12 Troubleshooting
- SECTION 13 Replacement Parts
- 13.A Frame and Jacket Assembly, Part Numbers
- 13.B Control Panel Assembly, Part Numbers
- 13.C Blower and Burner Assembly,Part Numbers. ALL Sizes
- 13.D AC Distribution Box Assemblies and Part Numbers
- 13.E Burner Door Part Numbers
- 13.F Waterway Inlet Assembly, Part Numbers
- 13.G Waterway Outlet Assembly, Part Numbers
- 13.H Gas Train Part Numbers
- 13.I Exhaust Manifold Part Numbers
Page 31
Figure 12. Multiple Boilers, Variable Primary Space Heating with Individual Isolation Valves
Control:
• Use outdoor reset to maintain building loop temperature. See
Section 8.C.3 on page 67.
• Set System pump to AUTO, pump runs during space heating
when outdoor temperature is below warm weather shutdown.
• Place jumper on T-T for constant heating call; or interrupted if
so desired.
• System sensor required for cascade, outdoor reset operation
and connected to Lead boiler; place sensor in common header
6 pipe diameters from last connected unit. See Section 8.D.3
on page 73
• System pump controlled by The Touchscreen Control. Boiler
pump(s) not used.
• Pump operation congurable in pump conguration menu. See
Section 8.D.5 on page 83.
• Quick connect isolation valves, controlled by The Touchscreen
Control, are available from and required for 3+ boiler systems.
See Section 8.D.4 on page 74.
BMS control:
• For Modbus/BACnet BMS mapping, refer to Section 7.F on
page 44.
• Enable/disable boiler via T-T terminals (49, 50) for space
heating.
• To enable/disable boiler for DHW using an aquastat, use
terminals 53 and 54.
• To enable/disable boiler for DHW using a sensor, use
terminals 39 and 40.
• BMS can control ring rate or setpoint via terminals 55 and 56.
(analog input).
• System pump controlled by BMS or The Touchscreen Control.
NOTE: This drawing is a schematic
representation of a piping style and is
not intended to be used as a working
installation drawing. Local code
requirements must be met.