INSTALLATION
CONTENTS
SAFETY CONSIDERATIONS
Step 5 Ð Install Accessories
Table 1 Ð Rigging Center of Gravity Ð in. mm
Step 2 Ð Check Compressor Mounting
Table 2A Ð Operational Corner Weights with
Table 2B Ð Operational Corner Weights with
Refrigerant Charge Approximate Ð Lb
Fig. 1 Ð Dimensions Ð Units 38AH044,054,064
Chart 1, Field Power Supply Connections
Fig. 2 Ð Dimensions Ð Units 38AH074,084
Chart 1, Field Power Supply Connections
VOLTAGE
Fig. 3 Ð Dimensions Ð Unit 38AH094
UNIT
DIAMETER Ð in. mm
VOLTAGE
Fig. 4 Ð Dimensions Ð Unit 38AH104
UNIT
DIAMETER Ð in. mm
VOLTAGE
Fig. 5 Ð Dimensions Ð Unit 38AH124
UNIT
DIAMETER
VOLTAGE
Fig. 6 Ð Dimensions Ð Unit 38AH134
UNIT
DIAMETER Ð
38AH
38AH
RIG HERE
and Sheet Metal Trim Kit
and Sheet Metal Trim Unit 38AH134 Shown
RIG HERE RIG HERE
Panels Removed
Fig. 9B Ð Field-InstalledSuction Line Loop
Fig. 9A Ð Typical Module with Cover
Fig. 10 Ð Outer View, Compressor Mounting
Step 3 Ð Make Refrigerant Piping Connections
Table 5 Ð Liquid Lift
Fig. 13 Ð Double Suction Riser Construction
38AH054-104 Dual-CircuitUnits Ð 60 Hz
38AH054-104 Dual-CircuitUnits Ð 50 Hz
Optional Single-CircuitUnits and 38AH124,134
Modular Units Dual-CircuitÐ 60 Hz
Modular Units Dual-CircuitÐ 60 Hz
Modular Units Dual Circuit Ð 50 Hz
Optional Single-CircuitUnits and 38AH124,134
Modular Units Dual Circuit Ð 50 Hz
LEGEND TXV Ð Thermostatic Expansion Valve
and 38AH094-134Units
Optional Single-CircuitUnits
TYP Ð Typical NOTE Lower split rst on, last off
Fig. 16 Ð Units 38AH124 and 134 with Installed
Connect Tubing from Evaporator to Unit
Piping Kit
Unit 38AH134 Shown
Kit Rails
Fig. 19 Ð Fully Assembled Piping and Trim Kit
Cover Unit 38AH134 Shown
Step 4 Ð Make Electrical Connections
OPTIONAL SINGLE-CIRCUITUNIT
UNIT
UNIT
Table 14 Ð Fan Motor Electrical Data
Page
Field-supplied
38AH
LENGTH Ð
FU Ð Fuse
FU Ð Fuse
Field-supplied NOTES
Field-supplied NOTES
Field-supplied NOTES
Step 5 Ð Install Accessories
PRE-START-UP
System Check
START-UP
Preliminary Checks
Fig. 29 Ð 06E Compressors, Typical
Adjust Refrigerant Charge
If the initial check shows too much oil too high in the sight glass remove oil to proper level. See Preliminary Oil Charge for proper procedure for adding and removing oil
Fig. 30 Ð Charging Chart Ð Unit 38AH044 50/60 Hz Ð Dual Circuit
Fig. 32 Ð Charging Chart Ð Unit 38AH064 50/60 Hz Ð Dual Circuit
Fig. 35 Ð
Charging Chart Ð Unit 38AH044
Charging Chart Ð Unit 38AH054
Fig. 36 Ð
Fig. 39 Ð Charging Chart Ð Unit 38AH084
Charging Chart Ð Unit 38AH064
Charging Chart Ð Unit 38AH074
Fig. 37 Ð
Fig. 42 Ð Charging Chart Ð Modules 124A, 124B
Fig. 40 Ð Charging Chart Ð Unit 38AH094 50/60 Hz
Fig. 41 Ð Charging Chart Ð Unit 38AH104 50/60 Hz
Fig. 43 Ð Charging Chart Ð Module 134B
Compressor Motor Protection
SERVICE
Refrigerant Circuit
Table 17 Ð Fan Cycling Control Ð Psig kPag
Table 18 Ð Pressure Switch Settings Psig kPag
Fig. 44 Ð Unloader Location and Settings
Capacity Control
Table 20 Ð One 2-StageThermostat Capacity
Table 19A Ð One 2-StageThermostat Capacity
Control for 38AH044-084 Dual-CircuitUnits
Control for 38AH094-134Units
CONTROL
Fig. 45 Ð Accumulator and Fusible Plug
Fig. 46 Ð Pressure-ActuatedCapacity Control Valve
Fig. 47 Ð Timer Cycle
Fig. 49 Ð Condenser Fan Adjustment
Fig. 48 Ð Unit Control Box
Compressor Replacement Ð Perform the following
TROUBLESHOOTING
TROUBLESHOOTING cont
B. Pre-Start-Up
START-UPCHECKLIST
A. Preliminary Information
OUTDOOR UNIT
C. Start-Up