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Trane RTWD User Manual
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RLC-SVX14H-GB
26
Figure 4 - 2 pass Evaporator Pressure Drop curves
1.
0
10
.
0
10
0.
0
1
.0
1
0.0
1
00
.0
P
r
e
ssu
r
e
D
r
o
p
k
P
a
W
ate
r Flow
l/s
W
atersi
de Pressu
re Drop
-
50
H
z
U
nit
s
-
2
Pass Evapo
ra
tor
1-E1A
M2
2-E1A
M1
3-E1A
MJ
4-
E2A
M1-
E2AM
2
5-E2A
MJ
6-
E3A
M2-
E3AM
3
7-
E3A
MJ-
E4A
MJ
8-E4A
M1
9-E5A
M1
10-E5A
M2
11-E5A
MJ
1
11
10
9
8
7
6
5
4
3
2
Select unit evaporator and limits according to General data table.
Figure 5 - 3 pass Evaporator Pressure Drop curves
10
.
0
10
0.
0
1
.0
1
0.0
1
00
.0
P
r
e
ssu
r
e
D
r
o
p
k
P
a
W
ate
r Flow
l/s
W
atersi
de
Pressu
re
Drop
-
50 H
z U
nit
s -
3 Pass
Evapo
r
a
tor
1-E1A
M2
2-E1A
M1
3-E1A
MJ
4-E2A
M2
5-E2A
MJ
6-E3A
M2-
E3A
M3
7-
E3A
MJ-
E4A
MJ
8-E4A
M1
10-E5A
M2
9-E5A
M1
11-E5A
MJ
1
9
10
11
8
7
6
5
4
3
2
Select unit evaporator and limits according to General data table.
Evaporator Piping
25
27
Table of Contents
Default Chapter
2
Table of Contents
2
General Information
4
Foreword
4
Warnings and Cautions
4
Loose Parts Inventory
4
Safety Recommendations
4
Reception
4
Warranty
4
Refrigerant
5
Maintenance Contract
5
Training
5
Unit Description
5
Model Number
6
General Data
9
Unit Description
20
Installation - Mechanical
23
Rigging
23
Lifting Procedure
23
Unit Isolation and Leveling
23
Evaporator Piping
24
Drainage
24
Evaporator Drain Flow Proving Devices
25
Condenser Piping
27
Water Regulating Valve
27
Relief Valves
29
Refrigerant Relief Valve Venting
29
Split System Installation
30
RTUD Installation
30
Condenser above the Compressor Chiller
31
System Confi Guration
32
Equivalent Line Length
32
Liquid Line Sizing
33
Discharge (Hot Gas) Line Sizing
33
Refrigerant Charge Determination
34
RTUD Chilled Water Flow Control
34
Oil Charge Determination
34
Outdoor Air Temperature Sensor Installation Requirements
34
Fan Control for the Remote Air Cooled Condenser
35
RTUD Condenser Elevation Setting
36
General Electrical Recommendations
37
Electrical Parts
37
RTWD HSE Version
37
Installer-Supplied Components
59
Power Supply Wiring
59
Control Power Supply
59
Installation - Electrical
60
Interconnecting Wiring
60
Alarm and Status Relay Outputs (Programmable Relays)
61
Relay Assignments Using Techview
63
Communications Interface Options
67
External Analog Output
67
Optional Tracer Communications Interface
69
Operating Principles
71
General - RTWD
71
General - RTUD
71
Refrigeration (Cooling) Cycle
73
Oil System Operation (RTWD/RTUD)
76
RTWD Operating Map
78
Pre-Start Checkout
79
RTWD HSE Version
79
Start-Up
83
Service and Maintenance
84
Overview
84
Maintenance
84
Weekly Maintenance and Checks
84
Monthly Maintenance and Checks
84
Annual Maintenance
85
Scheduling Other Maintenance
85
Service Procedures
86
Waterbox Weights
89
Compressor Oil
90
Oil Sump Level Check
90
Removing Compressor Oil
91
Oil Charging Procedure
91
Replacing the Oil Filter
91
Refrigerant Charge
92
Evacuation and Dehydration
92
Freeze Protection
93
Recommended Service Routine Frequencies
94
Additional Services
95
4
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Trane RTWD Specifications
General
Model
RTWD
Refrigerant
R-134a
Compressor Type
Helical Rotary
Voltage
460V
Operating Range
Leaving chilled-water temperature: 40°F to 65°F
Voltage Options
575V
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