HVAC / Air Conditioners
Bryant 134SAN Legacy Line Single-Stage Air Conditioner Product Data
Comprehensive product data and installation guide for the Bryant 134SAN Legacy Line Single-Stage Air Conditioner. Includes specifications, refrigerant piping limitations, accessory usage, and electrical data.
Table of contents
Manual images
Click an image to enlargeQuick Guide to the Bryant 134SAN Air Conditioner
The Bryant 134SAN is a single-stage, air-cooled, split-system air conditioner designed for residential use. It utilizes Puron Advance (R-454B) refrigerant. This document provides essential technical data, installation guidelines, and accessory information for installers and technicians.
Model Number Nomenclature
The model number 134SAN provides specific information about the unit:
- Product Family: 1 = AC
- Tier & Refrigerant: 3 = Legacy Puron Advance (R-454B)
- SEER2: 4 = 13.4 SEER2
- OD Design Type: S = Single Stage
- Major Series: A-Z
- Voltage: N = 208-230-1, P = 208-230-3, E = 460-3
- Cooling Capacity: 018 (1.5 Tons) to 060 (5 Tons)
Installation and Clearances
Proper installation is critical for performance and longevity. Ensure the unit is level in all horizontal planes. When installing multiple units in an alcove, roof well, or partially enclosed area, ensure there is adequate ventilation to prevent re-circulation of discharge air. Maintain the following clearances:
- Service Access: Ensure 24 inches of clearance for service.
- Airflow: Maintain at least 6 to 18 inches from walls depending on the configuration.
- Above Unit: Allow 48 inches of clearance above the unit.
Refrigerant Piping and Charging
The maximum allowable length of a residential split system depends on the liquid line diameter and vertical separation between indoor and outdoor units. The maximum total equivalent length is 250 ft. Refer to the provided tables in the manual for specific limitations based on your unit size and vertical separation.
Charging Formula: [(Lineset oz/ft X total length) – (factory charge for lineset)] = charge adjustment. Units are factory charged for 15 ft of 3/8” liquid line (9 oz).
Accessories and Usage
Various accessories are available to enhance performance or meet specific application requirements:
- Compressor Start Assist: Required for long line and low ambient cooling applications.
- Crankcase Heater: Required for low ambient and long line applications.
- Low-Ambient Pressure Switch/MotorMaster: Required when cooling operation is used at outdoor temperatures below 55°F (12.8°C).
- Sound Blanket: Suggested for installations near quiet areas or bedrooms.
Electrical Data
The control circuit is 24V on all units and requires an external power source. Copper wire must be used from the service disconnect to the unit. All motors and compressors contain internal overload protection. Refer to the Electrical Data table for specific MCA and Max Fuse/Circuit Breaker requirements for each unit size.
Practical help
Common problems
Refrigerant charge adjustment needed
Use the provided charging formula based on lineset length and diameter. Units are factory charged for 15 ft of 3/8” liquid line.
Unit not cooling properly
Check for proper refrigerant charge, correct lineset length, and ensure clearances are met to prevent air re-circulation.
Excessive noise
Consider installing a sound blanket if the unit is installed closer than 15 ft to quiet areas or bedrooms.
Before use
- Ensure the unit is level in all horizontal planes.
- Verify that the installation site allows for adequate ventilation.
- Confirm that the refrigerant lineset length and vertical separation are within the specified limits.
- Install the factory-supplied filter drier.
- Ensure electrical connections use copper wire only.
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Images and diagrams
- Clearance diagrams show the required distances from walls to ensure proper airflow and service access.
- Model number nomenclature table explains how to decode the 134SAN model string.
Model compatibility
- Requires Puron Advance (R-454B) refrigerant.
- Compatible with programmable or standard thermostat controls.
- Long line applications (over 80 ft) require specific accessories.
Manual page author
Michael Turner
Technical manual editor