Bohn SRN0075H2 Service Manual

BNRCUTB

June 2009

(Replaces BN-RCUTB, 04/07)

REMOTE INDOOR COMPRESSOR UNITS

Model SRN - Semi-Hermetic Reciprocating Compressor

Technical Guide

www.thecoldstandard.com

TABLE OF CONTENTS

Nomenclature..................................................................................................................................................................................2

Features & Benets.........................................................................................................................................................................3

Options...............................................................................................................................................................................................4

Performance Data, High & Medium Temperature (R-22/R-404A/R-507).....................................................................5

Performance Data, Low Temperature (R-404A/R-507) ......................................................................................................6

Electrical Data...............................................................................................................................................................................7-9

Dimensional Data ........................................................................................................................................................................10

Physical Data .................................................................................................................................................................................11

NOMENCLATURE

S R N 0500 H 2 C

Compressor Model Application Model Size Temp. Refrigerant Voltage

S = Semi­Hermetic
Reciprocating

2

R = Remote N = Indoor 0075 - 2200 H = High

L = Low
M = Medium
E = Extra Low

2 = R–22
6 = R–404A/507

© 2009 Heatcraft Refrigeration Products, LLC

B = 208/230/1/60
G = 230/1/60
C = 208/230/3/60
D = 460/3/60
E = 575/3/60

FEATURES & BENEFITS

The indoor SRN remote compressor unit is specically designed for use in supermarket, restaurant, warehouse and
other commercial and industrial applications. The design focuses on ease of installation and maintenance along with
the exibility to t most application requirements.

Construction

• Spacious, pre-painted electrical box

• Fixed low pressure switch (adjustable on low temp models)

• Fixed high pressure switch

• Pump down switch

• 230V control circuit transformer on 460V units

• Standard 16-3/4” tall box - (large 29 - 1/4” tall box is standard when defrost

components are selected)

• Sealed liquid line lter drier and sight glass

Serviceability

• Easy access refrigerant piping

• Captive door fasteners

• Single electrical connection location

• Removable electrical box provides convenient front access to the oil pump

and compressor

Quality

• Pre-bent tubing reduces the possibility of leaks

• Shipped with dry nitrogen charge

• Heavy duty base plate

• Non-metallic conduit on all wiring runs

Components

• Semi-hermetic reciprocating compressors

• Compressor contractor and control circuit fusing

• Oil pressure switch (when required)

• Rigid mounted compressors (models 0075-0400)

• Spring mounted compressors with suction and discharge vibration

eliminators (models 0499 and above)

• Compressor head cooling fan (when required)

• Compressor solid state protection model (on units with 4D compressors)

NOTES: SRN pictured with optional suction accumulator,
liquid solenoid valve, sealed suction lter and
head pressure valve

N.Y. MEA

3

OPTIONS

Factory-Installed Options

• Dual pressure switch

• Oil separator with discharge check valve and oil return hand valve

• Compressor and control circuit breaker

• Two tier rack

• Suction accumulator

• Sealed suction lter

• Replaceable core suction lter (0300-2200)

• Replaceable core liquid lter (0300-2200)

• Liquid line solenoid valve

• Spring mounted compressors with suction and discharge vibration eliminators (models 0075 to 0400)

• Crankcase heater

• Air defrost timer

• Electric defrost kit. Kit includes timer, evaporator fan contactor, defrost heater contactor(s), lockout relay

and terminal block

• Remote load fusing for electric defrost kit. Includes evaporator fan motor and defrost heater fuses

• Fixed head pressure control valve

• Beacon II™ compatible (contact factory)

• Demand cooling for low temperature R-22 (contact factory)

4