Installation / Operation Instruction Manual
Table Of Contents
- Brute MagnaTech
- Table of Contents. Page 1
- SECTION 1 General Information
- SECTION 2 Venting and Combustion Air
- SECTION 3 Gas supply and Piping
- SECTION 4 Water Flow and Headloss Data
- SECTION 5 Piping
- SECTION 6 Condensate Drain Trap
- SECTION 7 Electrical Connections
- 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.F Messages and USB
- 8.G Active Demands
- SECTION 9 Parameter Tables
- SECTION 10 Initial startup Instructions
- SECTION 11 Maintenance
- SECTION 12 Troubleshooting
- SECTION 13 Replacement Parts
- 13.A General Information
- 13.B Component Illustrations, Parts Lists, and Part Numbers
- 13.B.1 Final Assembly, Part Numbers
- 13.B.2 Frame and Jacket Assembly, Part Numbers
- 13.B.3 Control Panel, Part Numbers
- 13.B.4 Air / Gas System, Part Numbers (Model 1600)
- 13.B.5 Air / Gas System, Part Numbers (Model 2000)
- 13.B.6 Air / Gas System, Part Numbers (Models 2500 & 3000)
- 13.B.7 Air / Gas System, Part Numbers(Models 3500 and 4000)
- 13.B.8 AC Distribution Box, Part Numbers (Model 1600)
- 13.B.9 AC Distribution Box, Part Numbers (Model 2000)
- 13.B.10 AC Distribution Box, Part Numbers (Models 2500 to 4000)
- 13.B.11 Inlet Waterway Assemblies, Part Numbers
- 13.B.12 Outlet Waterway Assemblies, Part Numbers
- 13.B.13 Gas Train Assembly, Part Numbers(Models 1600, 2000, 2500 and 3000)
- 13.B.14 Gas Train Assembly, Part Numbers (Models 3500 and 4000)
Page 40
NOTE: A system supply sensor (supplied with each unit)
must be installed and connected to the Lead boiler/heater.
The Lead boiler/heater will use this system supply sensor as
the temperature control sensor for cascade operations.
7.D.7 RS 485 for Cascade (Lead Lag)
Cascade - Prior to wiring units for cascade
operations, select one unit as the Lead boiler/
heater. Other units connected to the Lead
boiler/heater will be referred to as Lag units.
Communication between Lead and Lag units is
accomplished using RS485. When wiring these
units for cascade operations, use terminals 57, 58,
and 59 (See Figure 19 on page 37). Use 2-wire
twisted pair, shielded w/drain (communication
cable) between units. Connect one wire of the
communication cable to A (-), terminal 58, and
the other wire to terminal B (+), terminal 57, and
the drain wire to GND, terminal 59. Connect the
other end of the cable to the next unit, matching
the termination wiring on the previous unit, except
for GND. Only connect the drain wire to ground on
one end of the cable to avoid ground loop issues.
If more than two units are cascaded together,
daisy chain the wiring from unit to unit, keeping
the cables as short as possible. A system supply
sensor must be installed and connected to the
Lead boiler. The Lead boiler will use this system
supply sensor as the temperature control sensor
for cascade operations. TT1 terminals are used to
initiate a heat demand at the Lead boiler.
Section 8.D.4 on page 69 shows how these
systems are congured in the touchscreen controls.
7.D.8 RS485 BMS
BMS – if communicating to the unit via RS485
serial communications, either Modbus or BACnet
MSTP, connect to terminals 60, 61, and 62 (See
Figure 19 on page 37). Use 2-wire twisted pair,
shielded w/drain (communication cable) between
units. Connect one wire of the communication cable
to A (-), terminal 61, and the other wire to terminal B
(+), terminal 60, and the drain wire to GND, terminal
62.
Section 8.D.11.d on page 89 shows how these
systems are congured in the touchscreen controls.