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ΒΡΑΔΦΟΡΔ ΩΗΙΤΕ ΧΟΡΠ.

 

 

 

 

7.All threaded joints should be coated with piping compound resistant to action of liquefied petroleum gas.

8.The appliance and its individual shutoff valve must be disconnected from the gas supply piping during any pressure testing of that system at test pressures in excess of 1/2 PSIG (3.45kpa).

9.The unit must be isolated from the gas supply system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 PSIG (3.45kpa).

10.The appliance and its gas connection must be leak tested before placing it in operation.

11.Purge all air from gas lines.

WARNING

Open flame can cause gas to ignite and result in property damage, severe injury, or loss of life.

NOTE: The Brute Magnum appliance and all other gas appliances sharing the gas supply line must be firing at maximum capacity to properly measure the inlet supply pressure. The pressure can be measured at the supply pressure port on the gas valve. Low gas pressure could be an indication of an undersized gas meter, undersized gas supply lines and/or an obstructed gas supply line. A bleed line from the diaphragm-type automatic valve shall be vented per local code requirements. Brute Magnum units are equipped with low and high gas pressure switches that are integrally vent limited. These types of devices do not require venting to atmosphere.

Section 4A

WATER CONNECTIONS —

BRUTE MAGNUM BOILER

4A.1 Heating System Piping:

Hot Supply Connections — Boiler

NOTE: This appliance must be installed in a closed pressure system with a minimum of 12 psi (82.7kPa) static pressure at the boiler.

Hot water piping should be supported by suitable hangers or floor stands. Do not support piping with this appliance. Due to expansion and contraction of copper pipe, consideration should be given to the type of hangers used. Rigid hangers may transmit noise through the system resulting from the piping sliding in the hangers. It is recommended that padding be used when rigid hangers are installed. Maintain 1" (2.5cm) clearance to combustibles for hot water pipes.

Pipe the discharge of the relief valve (full size)

to a drain or in a manner to prevent injury in the event of pressure relief. Install an air purger, an air vent,

a diaphragm-type expansion tank, and a hydronic flow check in the system supply loop. Minimum fill pressure must be 12psig (82.7kPa). Install shutoff valves where required by code.

Suggested piping diagrams are shown in Figures 4, 5, and 6. These diagrams are meant only as a guide. Components required by local codes must be properly installed. The Brute Magnum boiler’s efficiency

is higher with lower return water temperatures. Therefore, to get the most of low return temperature with multiple boilers, pipe as shown in Figure 4.

The Brute Magnum boiler has an internal mixing system that ensures that the condensation does not occur on the finned copper heat exchanger, with boiler return temperature down to 50°F (10°C). This

system, that consists of automatically actuated and linked valves, is set up at the factory, and is non-adjustable. The return water goes through the stainless steel heat exchanger, then to the mixing system (see Figure 7).

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 boiler is sized for the boiler’s heat exchangers, the internal mixing system, and 30 feet of full-sized piping, with a normal number of fittings taken into consideration. The piping must be primary/secondary, ensuring that the boiler’s pump is only used for the boiler, and that the system pump(s) do not interfere with the Brute Magnum pump or mixing system.

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

4A.2 Cold Water Make-Up — Boiler

1.Connect the cold water supply to the inlet connection of an automatic fill valve.

2.Install a suitable back flow preventer between the automatic fill valve and the cold water supply.

3.Install shut off valves where required.

NOTE: The boiler, when used in connection with a refrigeration system, must be installed so the chilled

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Bradford-White Corp BRHHV Water Connections Brute Magnum Boiler, 4A.1 Heating System Piping Hot Supply Connections Boiler