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Standex Master-Bilt M-SERIES - User Manual

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5/16 Rev. B 57-02497
Condensing Unit and
Refrigeration System
Installation & Operations Manual
908 Highway 15 North
New Albany, MS 38652
Phone: 800-684-8988
Fax: 800-232-3966
www.master-bilt.com
©2015 Master-Bilt
Products, an unincorporated division of Standex International Corporation.
All rights reserved.
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Summary

INTRODUCTION

Safety and Installation Notices

Critical notices on qualified personnel, grounding, and manual usage.

WARNING LABELS AND SAFETY INSTRUCTIONS

MASTER-BILT REFRIGERATION NOMENCLATURE

PRE-INSTALLATION INSTRUCTIONS

Delivery Inspection Protocol

Procedure for inspecting shipments for damage and filing claims.

INSTALLATION INSTRUCTIONS

Condensing Unit Handling and Placement

Guidelines for safely handling and positioning condensing units.

Evaporator Coil Handling and Placement

Guidelines for safely handling and positioning evaporator coils within walk-ins.

III. Electrical

Power Supply and Wiring

Matching power supply to unit requirements and field wiring procedures.

Electrical Safety Warning

DANGER: Installation must be by qualified personnel to prevent injury or death.

IV. Refrigerant Piping

Refrigerant Grade Tubing and Cleaning

Use of correct tubing and keeping lines clean and dry.

Liquid Line Sizing for Defrost Types

Guidance on selecting liquid line size based on defrost method.

Suction Line Slope and Oil Traps

Proper suction line slope and installation of oil traps.

Brazing Procedures and Flux Minimization

Using dry nitrogen during brazing and minimizing flux use.

VI. Evacuation, Dehydration and Start-Up

Vacuum Pump and System Requirements

Using a two-stage vacuum pump and electronic indicator for dehydration.

Evacuation Procedure Steps

Detailed steps for evacuating the system to the required micron level.

FINISH CHARGING PROCEDURES

Preliminary Charging Steps

Initial checks before charging, including valve positions and fan operation.

Charging for Remote M-Series Units

Refrigerant addition for M-Series units without head pressure control.

Charging for Built-Up Remote B-Series Units

Refrigerant addition for B-Series units with head pressure control.

Charging Safety Warning

DANGER: Charging must be by certified mechanics to prevent injury or death.

D. Pre-Charged Remote Refrigeration Systems

Evaporator Coil Placement

Positioning the evaporator coil for proper air flow and load distribution.

Condensing Unit Placement and Airflow

Locating the condensing unit for unrestricted airflow.

PRE-CHARGED REMOTE REFRIGERATION SYSTEMS

VII. Final Check List for All Models

Pressure Control and Defrost Timer Settings

Checking high-low pressure controls and defrost timer settings.

Operating Pressure and Electrical Checks

Verifying operating pressures and electrical requirements.

Thermostat and TXV Settings

Setting temperature controls and checking TXV for proper operation.

Refrigerant Charge and Oil Level

Checking sight glass for refrigerant charge and compressor oil level.

System Operation and Valve Checks

Checking defrost, vibration, opening valves, and packing nuts.

R-404 A SUCTION AND LIQUID LINE SIZES

R-404 A SUCTION AND LIQUID LINE SIZES (CONT.)

EQUIVALENT LENGTH ALLOWANCE FOR FITTINGS

LOW AMBIENT OPERATION CHARGE

LOW AMBIENT CHARGE

CONDENSING UNIT SPECIFICATIONS

CONDENSING UNIT SPECIFICATIONS (cont.)

Standex Master-Bilt M-SERIES Specifications

General IconGeneral
Cooling CapacityVaries by model (See Product Catalog)
Heating CapacityVaries by model (See Product Catalog)
Sound LevelVaries by model (See Product Catalog)
Dimensions (H x W x D)Varies by model (See Product Catalog)
WeightVaries by model (See Product Catalog)

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