Loss-Of-Charge Low-Pressure | Bryant 581A/B specs

		PHYSICAL DATA — 580F090,120,150 UNITS (cont)											580F036-

UNIT SIZE 580F				090				120			150
UNIT SIZE 580F				090				120			150
FURNACE SECTION
Rollout Switch Cutout
Temp (F)**				195				195			195
Burner Orifice Diameter
(in. ...drill size)													151
Natural Gas		Std	Low	.120...31				.120...31			.120...31
			Med	.120...31				.120...31			.129...30
			High	.120...31				.129...30			—
Liquid Propane		Alt	Low	.096...41				.096...41			.096...41
			Med	.096...41				.096...41			.102...38
			Med	.096...41				.096...41			.102...38
Thermostat Heat Anticipator			High	.096...41				.102...38			—
Thermostat Heat Anticipator
Setting (amps)
208/230 v and 575	Stage 1				.14				.14		.14
	Stage 2				.20				.20		.20
460 v	Stage 1				.14				.14		.14
	Stage 2				.20				.20		.20
Gas Input (Btuh) Stage 1			Low	125,000				120,000			180,000
			Med	120,000				180,000			200,000
			High	180,000				200,000			—
Stage 2			Low		—			180,000			224,000
			Med	180,000				224,000			250,000
Efficiency (Steady			High	224,000				250,000			—
Efficiency (Steady
State) (%)					80				80		80
Temperature Rise Range			Low	20-50				35-65			35-65
			Med	35-65				35-65			40-70
Manifold Pressure (in. wg)			High	45-75				40-70			—
Manifold Pressure (in. wg)
Natural Gas		Std			3.5				3.5		3.5
Liquid Propane		Alt			3.5				3.5		3.5
Gas Valve Quantity					1				1		1
Gas Valve Pressure Range
Psig				0.180-0.487				0.180-0.487			0.180-0.487
in. wg				5.0-13.5				5.0-13.5			5.0-13.5
Field Gas Connection
Size (in.)				1/ /3/		/3/		3/ /3/ /3/		4	3/ /3/	4
				2	4	4		4	4	4	4	4
HIGH-PRESSURE SWITCH (psig)
Standard Compressor							450 ± 50				500 ± 50
Internal Relief (Differential)
Cutout							428				428
Reset (Auto.)							320				320
LOSS-OF-CHARGE (LOW-PRESSURE)
SWITCH (psig)
Cutout							7 ± 3
Reset (Auto.)							22 ± 7
FREEZE PROTECTION
THERMOSTAT (F)
Opens							30 ± 5
Closes							45 ± 5
OUTDOOR-AIR INLET SCREENS					Cleanable...Screen size and quantity varies by option selected.
RETURN-AIR FILTERS								Throwaway
Quantity...Size (in.)				4...16 x 20 x 2				4...20 x 20 x 2			4...20 x 20 x 2

	LEGEND
Al	—	Aluminum
Bhp	—	Brake Horsepower
Cu	—	Copper

*Evaporator coil fin material/condenser coil fin material. Contact your local repre- sentative for details about coated fins.

†Weight of 14-in. roof curb.

**Rollout switch lockout is manually reset by interrupting power to unit or resetting thermostat.

NOTE: High-static motor not available on size 150 units.

581A/B specifications

The Bryant 581A/B is a sophisticated rooftop unit designed for commercial heating and cooling applications, striking a balance between performance, efficiency, and versatility. This unit is engineered to cater to various building sizes and configurations, making it an excellent choice for businesses seeking reliable climate control solutions.

One of the standout features of the Bryant 581A/B is its high efficiency. With SEER ratings reaching up to 14.5, this unit can significantly reduce energy costs while providing optimal performance throughout its operational lifespan. The design incorporates advanced compressor technology, allowing for variable speed operation that not only enhances comfort but also promotes energy savings by adjusting to the real-time demands of the environment.

The Bryant 581A/B also integrates cutting-edge refrigerant technology. Utilizing Puron refrigerant, it adheres to current environmental standards, minimizing its impact on ozone depletion while maximizing cooling performance. This commitment to sustainability is complemented by energy-efficient components, including high-efficiency coils and fan motors, which further optimize energy consumption.

In terms of construction, the Bryant 581A/B is built to withstand the rigors of outdoor installation. The unit features a rugged cabinet design with durable, corrosion-resistant materials, ensuring long-term reliability even in challenging weather conditions. Additionally, the easily accessible components simplify maintenance, reducing downtime for businesses.

The functionality of the Bryant 581A/B extends beyond mere cooling and heating. It is equipped with advanced control systems that can be interfaced with building management systems, allowing for seamless integration and enhanced control over indoor climate. This technology provides operators with the ability to monitor and adjust settings remotely, ensuring a comfortable indoor environment while optimizing energy use.

Noise reduction is another important characteristic of the Bryant 581A/B. The unit is designed with sound-dampening features, making it suitable for applications where low noise levels are a priority, such as retail spaces or office buildings.

Overall, the Bryant 581A/B is a robust solution for businesses seeking efficient, reliable, and flexible climate control. Its combination of advanced technology, durable construction, and user-friendly features make it a leading choice in the commercial HVAC market.

Bryant 581A/B manual Loss-Of-Charge Low-Pressure

Models: 581A/B

PHYSICAL DATA — 580F090,120,150 UNITS (cont)

UNIT SIZE 580F

FURNACE SECTION

151

LOSS-OF-CHARGE (LOW-PRESSURE)

RETURN-AIR FILTERS

Bhp

581A/B specifications