Brute Elite | Page 33 |
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| BOILER |
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| PUMP CONNECTIONS | |
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| RATINGS |
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SIZES | VOLTS | PHASE | AMPS |
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| DHW Pump Connections) | |
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120 | Single | 2* |
| 115V – Maximum 1HP | |||
No Pump |
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| or 7.4A max | ||||
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| Less |
| 115V – Maximum 1HP | ||
120 | Single | than |
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With Pump |
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| or 7.4A max | ||||
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| 6* |
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*Minimum 15A circuit required |
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| Table 10. BNTH Electrical Data. | ||||||
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| WATER HEATER | |||
SIZES |
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| VOLTS |
| PHASE | AMPS | |
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| 120 |
| Single | 2* | ||
No pump |
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| 120 |
| Single | 7* | ||
With pump |
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| 120 |
| Single | 8* | ||
With pump |
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| See Pump Rating Plate FLA | |||||
No pump |
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| (must be less than 7.4 FLA; 1HP or less) | ||||
*Minimum 15A circuit required
Table 11. BNTV Electrical Data.
7.2 Pump Connections
Brute Elite energizes the pump contacts upon a call for heat. Once the call for heat is satisfied the pump will remain on for the defined pump overrun time.
NOTE: System and DHW contacts are dry contacts. Appropriate voltage must be supplied to the System and DHW pumps for proper operation. Boiler pump contact (max 7.4 FLA) is fed by 120V (violet wire) internally from main power feed.
System pump connections are located on terminal block 5 (TB5) in the control panel (see Figure 27). The system pump contacts are rated for 120Vac, 7.4 amps. To use the contacts, power must be supplied on one terminal with the other terminal wired to the pump or a relay controlling the pump.
DHW pump connections are located on terminal block 5 (TB5) in the control panel and are rated for 120Vac, 7.4 amps. To use the contacts, power must be supplied on one terminal, and the other terminal wired to the pump or a relay controlling the pump.
7.324Vac Transformer with Integral Circuit Breaker
24Vac is supplied by a transformer mounted to the backside or underneath the control panel, depending upon the appliance. All 24Vac power is supplied through a circuit breaker that is part of the transformer. The transformer is then connected to terminal blocks 3 and 4 (TB3 and TB4).
7.4 Hydronic Call for Heat
Connect the call for heat to terminal block 7 (TB7), connections labeled
7.5 Outdoor Air Temperature Sensor
Connect the outdoor air temperature sensor to terminal block 7 (TB7), connections labeled Outdoor temp sensor. The outdoor air temperature sensor is used for warm weather shutdown and outdoor reset.
7.6 Domestic Hot Water Connection
Connect a DHW sensor or aquastat to terminal block 6 (TB6), connections labeled DHW stat. The aquastat or sensor will be automatically detected and initiate the DHW call as needed.
7.7System Sensor (lead lag/cascading operation only)
Connect the system sensor to terminal block 6 (TB6), connections labeled system sensor. Can be used in a well for DHW tank applications with lead/lag.
7.8 External Control Connections
Connect
7.9 Optional Field Connections
Terminal block 8 (TB8) in the control panel can be used for connecting optional components, such as, low water cutoffs, flow switches, additional high limits and other field supplied devices that must be interlocked with the boiler. All safeties or end switches must be wired in series by removing the supplied jumpers.
7.10Lead Lag/ Cascading Wiring Connections
Connect each boiler in the cascade system together by daisy chaining each control from Modbus port 1 (MB1) of the first boiler to the second and so on. This can be done using 22awg or thicker shielded twisted pair wire with drain. Two twisted pairs or three conductors are needed.
a.To
b.If there are more boilers in the system connect a wire from Modbus port 1 terminal A of boiler 2 to Modbus port 1 terminal A of boiler 3.
c.Repeat these steps until all Modbus port1 terminal A connections are wired.
d.Repeat the above steps for Modbus port 1 terminal B and C connections to complete the wiring.
e.Connect the drain wire from the twisted pair wire to ground on one end of the wire only.
