Bryant Legacy 213B - User Manual

213B, 215B
Legacyt Line Heat Pump
with Puronr Refrigerant
1--1/2 To 5 Nominal Tons
Installation Instructions
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes and
current editions of the National Electrical Code (NEC) NFPA 70.
In Canada, refer to current editions of the Canadian electrical code
CSA 22.1.
Recognize safety information. This is the safety--alert symbol
!
!
.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand these signal words; DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability, or
operation.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing and gloves when handling
parts.
CAUTION
!
INSTALLATION RECOMMENDATIONS
NOTE: In some cases noise in the living area has been traced to
gas pulsations from improper installation of equipment.
1. Locate unit away from windows, patios, decks, etc. where
unit operation sound may disturb customer.
2. Ensure that vapor and liquid tube diameters are appropriate
for unit capacity.
3. Run refrigerant tubes as directly as possible by avoiding un-
necessary turns and bends.
4. Leave some slack between structure and unit to absorb vi-
bration.
5. When passing refrigerant tubes through the wall, seal open-
ing with RTV or other pliable silicon--based caulk (see Fig.
1).
6. Avoid direct tubing contact with water pipes, duct work,
floor joists, wall studs, floors, and walls.
7. Do not suspend refrigerant tubing from joists and studs with
a rigid wire or strap which comes in direct contact with
tubing (see Fig. 1).
8. Ensure that tubing insulation is pliable and completely sur-
rounds vapor tube.
9. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation (see Fig. 1).
10. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.
INSULATION
SUCTION TUBE
LIQUID TUBE
OUTDOOR WALL INDOOR WALL
LIQUID TUBE
SUCTION TUBE
INSULATION
CAULK
HANGER STRAP
(AROUND SUCTION
TUBE ONLY)
JOIST
1” (25.4 mm)
MIN
THROUGH THE WALL
SUSPENSION
A07588
Fig. 1 -- Connecting Tubing Installation
When outdoor unit is connected to factory--approved indoor unit,
outdoor unit contains system refrigerant charge for operation with
AHRI rated indoor unit when connected by 15 ft. (4.57 m) of
field--supplied or factory accessory tubing. For proper unit
operation, check refrigerant charge using charging information
located on control box cover and/or in the Check Charge section of
this instruction.
IMPORTANT: Maximum liquid--line size is 3/8--in. OD for all
residential applications including long line.
IMPORTANT: Always install the factory--supplied liquid--line
filter drier. Obtain replacement filter driers from your distributor or
branch.

Summary

Installation Instructions

Safety Considerations

Important safety information, signal words (DANGER, WARNING, CAUTION), and personal injury prevention.

Electrical Shock Hazard Warning

Warning about electrical shock hazard and the need to disconnect power before installation.

Cut Hazard Caution

Make Piping Connections

Warning about personal injury and environmental hazards during piping, and instructions for refrigerant tubing.

Install Liquid Line Filter Drier Indoor

Evacuate Refrigerant Tubing and Indoor Coil

Instructions for evacuating the system using the deep vacuum method to remove air and moisture.

Make Electrical Connections

Safety warnings and instructions for connecting power and ground wires to the unit.

Connect Control Wiring

System Start-Up

Safety warnings and a step-by-step procedure for starting up the system after installation.

Defrost Cycle Operation

Check Refrigerant Charge

Procedures for checking and adjusting refrigerant charge using subcooling or superheat methods based on conditions.

Check Charge with Cooling TXV

Detailed steps for checking refrigerant charge using the subcooling method for TXV systems.

Check Charge with Indoor Pistons

Detailed steps for checking refrigerant charge using the superheat method for piston systems.

Final Checks

Overview

1. Function Description
2. Usage Features
3. Maintenance Features

This document provides installation and maintenance instructions for the Bryant Legacy™ Line Heat Pump, models 213B and 215B, with Puron® Refrigerant, ranging from 1-1/2 to 5 nominal tons. It emphasizes safety considerations, installation recommendations, piping connections, electrical connections, start-up procedures, and charging methods for optimal performance.

Function Description:

The Bryant Legacy™ Line Heat Pump is designed to provide both heating and cooling for residential and light commercial applications. It utilizes Puron® (R-410A) refrigerant, which operates at higher pressures than R-22, necessitating specific servicing equipment and components. The unit is designed for connection to a factory-approved indoor unit, forming a complete split system. Its operation involves a sophisticated control system that manages refrigerant flow, fan motor operation, and defrost cycles to maintain desired indoor temperatures efficiently. The heat pump can operate in cooling mode with a minimum outdoor ambient of 55°F (12.78°C) and a maximum of 125°F (51.67°C), and in heating mode with a maximum outdoor ambient of 66°F (18.89°C). The defrost control is a time/temperature-based system, factory-set to 90 minutes, with field-selectable options for 30 or 60 minutes. This control ensures efficient defrosting of the outdoor coil during heating operation to prevent ice buildup and maintain performance.

Usage Features:

The installation process begins with unpacking and inspecting the unit for any shipping damage. It must be installed on a solid, level mounting pad, with provisions for tie-down bolts if required by local codes. For rooftop applications, the unit should be placed on a level platform or frame, above a load-bearing wall, and isolated from the structure to minimize vibration transmission. Adequate clearances are crucial for proper airflow, wiring, refrigerant piping, and service access. A minimum of 24 inches (609.6 mm) is required at the service end, 48 inches (1219.2 mm) above the unit, 6 inches (152.4 mm) on one side, and 12 inches (304.8 mm) on all remaining sides. For units with wire grille coil guards, an 18-inch (457.2 mm) clearance between units is acceptable if there is no overhang within 12 feet (3.66 m). Units with louver panels require 24 inches (609.6 mm) between units.

Refrigerant tubing connections are critical for system integrity and performance. The document provides detailed instructions for connecting vapor and liquid tubes, emphasizing the use of refrigerant-grade tubing and proper brazing techniques. Service valves must be wrapped in a heat-sinking material, such as a wet cloth, during brazing to prevent damage. The unit is shipped with a factory charge for operation with 15 feet (4.57 m) of tubing. For optimal performance, the refrigerant charge needs to be checked and adjusted based on the specific indoor unit and tubing length. The document outlines two primary charging methods: the subcooling method for units with a TXV (Thermostatic Expansion Valve) and the superheat method for units with indoor pistons. Favorable conditions for charging exist when the outdoor temperature is between 70°F (21.11°C) and 100°F (37.78°C), and the indoor temperature is between 70°F (21.11°C) and 80°F (26.67°C).

Electrical connections must comply with local and national codes, including the National Electrical Code (NEC) NFPA 70 and the Canadian electrical code CSA 22.1. Copper wire only should be used between the disconnect switch and the unit. A branch circuit disconnect of adequate size is required and must be located within sight and readily accessible from the unit. The unit cabinet must be properly grounded to minimize personal injury in case of an electrical fault. For 3-phase units, a 3-phase monitor control ensures correct phase rotation, indicated by LED lights. Control wiring uses 18 AWG color-coded, insulated wire, with 16 AWG recommended for thermostat distances over 100 feet (30.5 m) to prevent excessive voltage drop.

Start-up procedures include fully opening liquid and vapor service valves, replacing stem caps, and energizing the system. The thermostat should be set to the desired temperature and mode (HEAT or COOL, with fan ON or AUTO) for at least 15 minutes to allow the system to stabilize before checking the refrigerant charge. If equipped, the crankcase heater must be powered for a minimum of 24 hours before starting the unit to prevent compressor damage.

Maintenance Features:

The manual stresses the importance of regular maintenance for continuing high performance and minimizing equipment failure. This includes periodic checks of wiring and tubing to ensure they are secure and not rubbing against other components or sharp edges. All panels and covers must be securely fastened. Service valve stem caps should be tightened to 1/12-turn past finger tight. The owner's manual, which includes periodic maintenance requirements, should be left with the customer, and a Dealer Installation Checklist should be completed and filed.

For systems requiring service, federal regulations mandate that refrigerant not be vented to the atmosphere. Recovery of refrigerant is required during system repair or final unit disposal. If the system is opened for service, refrigerant must be recovered, the system evacuated to 500 microns, and filter driers replaced. The deep vacuum method, pulling a vacuum of 500 microns, is recommended to ensure the system is free of air and liquid water. A tight, dry system will hold a vacuum of 1000 microns for approximately 7 minutes. The factory-supplied liquid-line filter drier must always be installed, and replacement driers should be obtained from an authorized distributor. Puron® (R-410A) systems require specific filter driers designed for higher working pressures (at least 600 psig) and should not use R-22 TXVs or capillary tube coils. All indoor coils must be installed with a hard shutoff Puron TXV metering device. POE oils, used with Puron, absorb moisture rapidly and should not be exposed to the atmosphere. They can also damage certain plastics and roofing materials, so care must be taken during handling.

Bryant Legacy 213B Specifications