551A/558F/559F155-300

GUIDE SPECIFICTIONS — SIZES 155-300 (cont)

5. E-Coated aluminum-fin coils shall have a flexible

 

 

2) Low-pressure switch.

 

 

 

 

epoxy polymer coating uniformly applied to all coil

 

 

3) Dual freezestats (evaporator coil).

 

 

 

surface areas without material bridging between fins.

 

 

4) High-pressure switch.

 

 

 

 

Coating process shall ensure complete coil encapsu-

 

 

b. Supply-air thermostat shall be located in the unit.

 

lation. Color shall be high gloss black with gloss —

 

 

 

 

 

c. Heating section shall be provided with high-

 

60 deg of 65 to 90% per ASTM D523-89. Uniform dry

 

 

 

film thickness from 0.8 to 1.2 mil on all surface areas

 

 

temperature limit switch.

 

 

 

 

including fin edges. Superior hardness characteris-

 

I. Operating Characteristics:

 

 

 

 

tics of 2H per ASTM D3363-92A and cross-hatch

 

1. Unit shall be capable of starting and running at 125 F

 

adhesion of 4B-5B per ASTM D3359-93. Impact

 

 

 

 

ambient outdoor temperature per maximum load cri-

 

resistance shall be up to 160 in./lb (ASTM D2794-

 

 

 

 

 

teria of ARI Standard 360.

 

 

 

 

93). Humidity and water immersion resistance shall

 

 

 

 

 

 

 

2.

Unit with

standard controls

will operate

in

cooling

 

be up to minimum 1000 and 250 hours respectively

 

 

 

 

down to an outdoor ambient temperature of 40 F

 

(ASTM D2247-92 and ASTM D870-92). Corrosion

 

 

 

 

 

(4.4 C).

 

 

 

 

 

 

durability shall be confirmed through testing to be no

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

less than 1000 hours salt spray per ASTM B117-90.

 

3. Unit shall be provided with fan time delay to prevent

 

Coil construction shall be aluminum fins mechani-

 

 

cold air delivery.

 

 

 

 

cally bonded to copper tubes.

 

J. Electrical Requirements:

 

 

 

6. E-Coated copper-fin coils shall have a flexible epoxy

 

 

 

 

 

All unit power wiring shall enter unit cabinet at a single

 

polymer coating uniformly applied to all coil surface

 

 

 

location.

 

 

 

 

 

 

areas without material bridging between fins. Coating

 

 

 

 

 

 

 

 

K. Motors:

 

 

 

 

 

 

process shall ensure complete coil encapsulation.

 

 

 

 

 

 

 

 

1. Compressor motors shall be cooled by

refrigerant

 

Color shall be high gloss black with gloss — 60 deg

 

 

of 65 to 90% per ASTM D523-89. Uniform dry film

 

 

gas passing through motor windings and shall have

 

thickness from 0.8 to 1.2 mil on all surface areas

 

 

line break thermal and current overload protection.

 

including fin edges. Superior hardness characteris-

 

2. All fan motors

shall have permanently

lubricated,

 

tics of 2H per ASTM D3363-92A and cross-hatch

 

 

sealed bearings and inherent automatic-reset ther-

 

adhesion of 4B-5B per ASTM D3359-93. Impact

 

 

mal overload protection or manual reset calibrated

 

resistance shall be up to 160 in./lb (ASTM D2794-

 

 

circuit breakers.

 

 

 

 

93). Humidity and water immersion resistance shall

 

3. All indoor-fan motors 5 hp and larger shall meet the

 

be up to minimum 1000 and 250 hours respectively

 

 

 

 

minimum efficiency requirements as established by

 

(ASTM D2247-92 and ASTM D870-92). Corrosion

 

 

 

 

 

the Energy Policy Act of 1992 (EPACT)

effective

 

durability shall be confirmed through testing to be no

 

 

 

 

 

October 24, 1997.

 

 

 

 

less than 1000 hours salt spray per ASTM B117-90.

 

 

 

 

 

 

 

L. Special Features:

 

 

 

 

 

Coil construction shall be copper fins mechanically

 

 

 

 

 

 

bonded to copper tubes with copper tube sheets.

 

Certain features are not applicable when the features

 

Galvanized steel tube sheets shall not be acceptable.

 

designated * are specified. For assistance in amending

 

A polymer strip shall prevent coil assembly from con-

 

the specifications, contact your local Bryant Sales Office.

 

tacting sheet metal coil pan to maintain coating integ-

 

1. Roof Curbs (Horizontal and Vertical):

 

 

 

rity and minimize corrosion potential between coil

 

 

 

 

 

 

a. Formed of 16-gage galvanized steel with wood

 

and pan.

 

 

 

 

 

nailer

strip

and shall be

capable of

supporting

F. Refrigerant Components:

 

 

 

 

entire unit weight.

 

 

 

Refrigerant circuit components shall include:

 

 

 

 

 

 

 

b. Permits installing and securing ductwork to curb

1.

Thermostatic expansion valve (TXV).

 

 

 

 

prior to mounting unit on the curb.

 

 

2.

Filter driers.

 

2.

Horizontal Adapter Roof Curb:

 

 

3. Gage port and connections on suction, discharge,

 

 

Includes factory-assembled adapter and internal

 

and liquid lines.

 

 

duct and substantially improves evaporator fan static

G. Filter Section:

 

 

performance (static regain).

 

 

 

Standard filter section shall consist of 2 sizes of factory-

 

 

NOTE: Power exhaust or barometric relief must be

installed 2-in. (51 mm) thick throwaway fiberglass filters of

 

 

mounted in the return ductwork when used in con-

commercially available sizes.

 

 

junction with this accessory.

 

 

 

H. Controls and Safeties:

*

3.

Integrated Economizer:

 

 

 

1.

Unit Controls:

 

 

a. Integrated type capable of simultaneous econo-

 

a. Economizer control (optional)

 

 

mizer

and

compressor

operation

to

provide

 

 

 

mechanical cooling while using outdoor air.

 

b. Capacity control (2-step)

 

 

 

 

 

b. Equipped with low-leakage parallel blade, gear

 

c. Unit shall be complete with self-contained low-

 

 

 

 

 

driven dampers not to exceed 2% leakage, at

 

voltage control circuit.

 

 

1.0 in. wg (249 Pa) pressure differential.

 

2.

Safeties:

 

 

c. Actuator motor is 24-v, 53 lb torque spring return

 

a. Unit shall incorporate a solid-state compressor

 

 

direct coupled type design (close on loss of

 

lockout which provides reset capability at the

 

 

power).

 

 

 

 

 

space thermostat, should any of the following

 

 

 

 

 

 

 

 

 

safety devices trip and shut off compressor:

 

 

 

 

 

 

 

 

1)Compressor lockout protection provided for either internal or external overload.

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Bryant 551B manual GUIDE SPECIFICTIONS - SIZES 155-300 cont, 551A/558F/559F155-300

551A, 551B, 558F specifications

The Bryant 551B and 551C are two highly efficient air conditioning units designed to provide optimal comfort in residential settings. Known for their reliability and performance, these models are part of Bryant's esteemed line of heating and cooling solutions.

One of the standout features of the Bryant 551B is its two-stage cooling system, which allows for better humidity control and increased comfort. This ensures that homeowners can enjoy consistent temperatures while reducing energy consumption. The unit operates quietly, thanks to its noise-reducing technology, making it an ideal choice for bedrooms and living spaces.

On the other hand, the Bryant 551C builds upon this foundation with its variable-speed compressor. This technology allows the unit to adjust its cooling output according to the specific needs of the home. This results in seamless operation and even greater energy efficiency. Both models also incorporate Bryant's advanced control capabilities, which allow users to monitor and adjust settings remotely via smart devices, adding a layer of convenience and modernity to home climate control.

With an emphasis on durability, both the 551B and 551C feature a galvanized steel cabinet that protects against weather-related damage. The powder coat finish further enhances their resistance to rust and corrosion, ensuring a long lifespan and minimal maintenance.

Another significant characteristic of these units is their excellent Seasonal Energy Efficiency Ratio (SEER) ratings. The 551B boasts a SEER rating of up to 16, while the 551C takes it even further with ratings exceeding 20. This efficiency not only translates to lower energy bills for homeowners but also contributes to a reduced carbon footprint, making these units environmentally friendly options.

Both models are also designed to operate with eco-friendly refrigerants, aligning with modern energy standards and regulations aimed at reducing greenhouse gas emissions.

In summary, the Bryant 551B and 551C are exemplary choices for homeowners looking for reliable, efficient, and high-performing air conditioning solutions. With features such as two-stage and variable-speed compressors, advanced smart technology, and robust construction, these models stand out in the competitive HVAC market. They promise a comfortable indoor environment along with significant energy savings, making them a wise investment for the future.