Internet Version for Reference Only
Copper Brute II | Page 19 |
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Figure 8. Field Wiring Panel
Other Field Interlocks: To install other field- wired devices to interlock with the heater (louver switches, flow switches, etc.), remove the jumper between the “COM” and “NO” terminals and wire the device in series across these terminals. (See Section
5.3for important information about external staging controls and building automation systems.)
System Heat Demand: Remove the jumper across the “COM D” and “Ht D” terminals, and connect the zone pump or valve end switch, thermostat, aquastat, or other indication of system heat demand to these terminals. If no indication of a system heat demand will be provided, the jumper must remain in place. When jumpered, the temperature control will always see a heat demand, and the Copper Brute II pump (if equipped) or any pump with its contactor connected to the “PMP” and “PMP” terminals will run continuously. In addition, any device connected through the “HT OUT” and “LWCO GND” terminals for an external indication of the heat demand will run continuously. See section 6 for more information on the system heat demand for various modes of operation.
Refer to Figures 23 through 25 for field wiring of additional components.
5.3 External Staging Control Wiring
WARNING
Improper field wiring may result in fire or explosion which can cause property damage, severe injury, or death. Make only wiring connections which are in accordance with the Installation and Operation manual.
AVERTISSEMENT
Un câblage incorrect lors de l’installation peut causer un incendie ou une explosion pouvant entraîner des dommages matériels, de graves blessures ou la mort. Ne faire seulement que les connexions conformes au Manuel d’installation et d’exploitation.
The wiring methods in this section must be used to connect an external staging control, such as a multiple heater control, building automation system, energy management system, etc.) Other wiring methods may be unsafe.
Figure 9 shows how to wire the external controller to the heater’s field wiring panel, which is located on the right side of the heater.
Model 1250, 1500, 1750 & 2000
4 stage heater | 4 stage heater | 4 stage heater | 4 stage heater |
using 4 control | using 3 control | using 2 control | using 1 control |
outputs | outputs | outputs | output |
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Model 1000
3 stage heater | 3 stage heater | 3 stage heater |
using 3 control | using 2 control | using 1 control |
outputs | outputs | output |
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Model 750 & 500
2 stage heater | 2 stage heater |
using 2 control | using 1 control |
outputs | output |
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Figure 9. External Control Connection Wiring.
