Bradford-White Corp BRHHH, BRHHV warranty Hydronic Piping Multiple Boilers Alternate

Βρυτε Μαγνυμ Page 17

Figure 5. Hydronic Piping — Multiple Boilers (Alternate).

If the water at the inlet of the copper heat

exchanger is less than 140°F (60°C), water from the outlet of the copper heat exchanger will be directed back to the inlet of the copper heat exchanger, and will mix to bring the inlet water up to 140°F (60°C). Once through the copper heat exchanger, the water picks up another 20-25°F (11-14°C) (when at high fire), and it leaves the boiler at 160-165°F (71-74°C). This hot water is then sent to the system.

If the water at the inlet of the copper heat exchanger is 140°F (60°C), or higher, the water will be allowed to flow through the copper heat exchanger and

directly to the outlet of the Brute Magnum, and there will be a 20-25°F (11-14°C) temperature rise between the inlet and outlet of the unit, when the unit is at high fire.

The pump in the heater is sized for the heater’s heat exchangers, the internal mixing system, and 30 feet of full-sized piping, with a normal number of fittings taken into consideration.

The minimum inlet water temperature for the Brute Magnum is 50°F (10°C) to avoid condensing on the copper coils.