Pre-Installation . Trane CVHE-SVX02M-EN, CVHG, CVHF, CVHE
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Pre-Installation
ASHRAE Standard 15
Compliance
Trane recommends that indoor CenTraVac™ chiller installations fully meet or exceed the guidelines of the current version of ASHRAE Standard 15, in addition to any applicable national, state, or local requirements.
This typically includes:
• A refrigerant monitor or detector that is capable of monitoring and alarming within the acceptable exposure level of the refrigerant, and that can actuate mechanical ventilation.
• Audible and visual alarms, activated by the refrigerant monitor, inside the equipment room and outside of every entrance.
• The equipment room should be properly vented to the outdoors, using mechanical ventilation that can be activated by the refrigerant monitor.
• The purge discharge and the rupture disk must be properly piped to the outdoors.
• If required by local or other codes, a self-contained breathing apparatus should be available in close proximity to the equipment room.
Refer to the latest copy of ASHRAE Standard 15 for specific guidelines. Trane assumes no responsibility for any economic, health, or environmental issues that may result from an equipment room’s design or function.
Unit Shipment
Inspect unit while it is still on the truck for any shipping damage. The chiller ships shrink-wrapped in a 0.010-in.
(0.254 mm) recyclable film protective covering. Do NOT remove shrink-wrap for inspection! Inspect for damage to the shrink-wrap and determine if physical damage has occurred.
Each chiller ships from the factory as a hermetically assembled package; it is factory-assembled, -wired, and -tested. All openings except for the waterbox vent and drain holes are covered or plugged to prevent contamination during shipment and handling.
shows an illustration of a typical unit and its components. As soon as the unit arrives at the job site, inspect it thoroughly for damage and material shortages. In addition:
1. Verify the hermetic integrity of the unit by checking the chiller pressure for an indication of holding charge pressure.
2. To prevent damaging moisture from entering the unit and causing corrosion, each chiller is pressurized with 3 to 5 psig (20.7 to 34.5 kPaG) of dry nitrogen before shipment.
10
approximately 5 psig (34.5 kPaG) at 72°F (22.2°C).
Place a gauge on the access valve provided
(indicated by arrow and circle in the following figure) on the refrigerant pump discharge line to verify the holding charge. If the charge has escaped, contact your local Trane sales office for instructions.
3. The loose parts box and isolator pads ship on top of the control panel box.
4. Check the oil sump sight glasses to verify that the sump was factory-charged with 9 gallons (34.1 L) of oil. If no oil level is visible, contact your local Trane sales office.
block oil tank serviceability.
Figure 2. Refrigerant pump discharge line access valve
Installation Requirements and
Contractor Responsibilities
A list of the contractor responsibilities typically associated with the unit installation process is provided.
de atth uiip en
CVHE-SVX02M-EN
shrink-wrap covering during storage.
Type of Requirement
Foundation
Rigging
Disassembly/Reassembly
(as required)
Isolation
Electrical
Water piping
Trane Supplied
Trane Installed
Trane Supplied
Field Installed
Field Supplied
Field Installed
• Meet foundation requirements
• Safety chains
• Clevis connectors
• Lifting beam
• Trane will perform or have direct on-site supervision of the disassembly and reassembly work (contact your local Trane office for pricing)
• Isolation pads or spring isolators
• Isolation pads or spring isolators
• Optional spring isolators, when required, are installed by others; do NOT overload springs and do
NOT install isolation springs if they block serviceable parts such as the oil tank system, service valves, etc.
• Circuit breakers or fusible disconnects (optional)
• Electrical connections to unit-mounted starter
(optional)
• Electrical connections to remote-mounted starter
(optional)
• Circuit breakers or fusible disconnects (optional)
• Unit-mounted starter
(optional)
• Power factor correction capacitors (PFCCs)
(optional)
• Wiring sizes per submittal and National Electric Code
(NEC)
• Jumper bars
• Temperature sensor
(optional outdoor air)
• PFCCs (remote mounted starter optional only)
• Terminal lugs
• Flow switches (may be field supplied); for installation instructions for the ifm efector® flow detection controller and sensor, refer to
or Trane literature that shipped with the device
• Ground connection(s)
• Jumper bars
• BAS wiring (optional)
• Inter-processor communication (IPC) wiring (AFD and remote-mounted starters only)
• Control voltage wiring (AFD and remote-mounted starters only)
• Oil pump interlock wiring (AFD and remote mounted starters only)
• Remote-mounted starter (optional)
• High condenser pressure interlock wiring (AFD and remote-mounted starters only)
• Chilled water pump contactor and wiring including interlock
• Condenser water pump contactor and wiring including interlock
• Option relays and wiring
• Tracer® SC communication wiring (optional)
• Flow sensing devices
(may be field supplied)
• Taps for flow sensing devices
• Taps for thermometers and gauges
• Thermometers
• Strainers (as required)
• Water flow pressure gauges
• Isolation and balancing valves in water piping
• Vents and drain on waterbox valves (one each per pass)
• Pressure relief valves (for waterboxes as required)
CVHE-SVX02M-EN 11
Type of Requirement
Relief
Trane Supplied
Trane Installed
• Rupture disk assembly
Trane Supplied
Field Installed
• RuptureGuard™
(optional); refer to
Installation, Operation, and Maintenance:
RuptureGuard Pressure
Relief System Option
(CTV-SVX06*-EN)
Field Supplied
Field Installed
• Vent line and flexible connector and vent line from rupture disk to atmosphere
Insulation
Water Piping Connection
Components
• Insulation (optional)
Flanged (optional)
• Welded on flange for
300 psig (2068.4 kPaG) waterboxes
Flanged (optional)
• Victaulic® to flange adapter for 150 psig
(1034.2 kPaG) waterboxes
• Insulation
• Chiller feet insulation
Victaulic®
•
•
Victaulic® coupling for 150 psig (1034.2 kPaG) and
300 psig (2068.4 kPaG) waterboxes
Fasteners for flanged-type connections (optional)
Other Materials
• Trace gas (1 lb [0.45 kg] maximum per machine as needed to perform leak testing)
• Dry nitrogen (8 psig [55.2 kPaG] maximum per machine as needed)
Installation Completion and Request for Trane
(CTV-
ADF001*-EN; refer to
)
• To be completed by installing contractor prior to contacting Trane for start-up
Chiller start-up commissioning
(a)
• Trane, or an agent of
Trane specifically authorized to perform start-up of Trane® products
Post-commissioning transport of empty refrigerant containers for return or recycling
(a)
• Move empty refrigerant containers to an easily accessible point of loading
Start-up must be performed by Trane or an agent of Trane specifically authorized to perform start-up and warranty of Trane® products. Contractor shall provide Trane (or an agent of Trane specifically authorized to perform start-up) with notice of the scheduled start-up at least two weeks prior to the scheduled start-up.
Storage Requirements
•• D
•• D o n prre ve ag e tto
Less than 1 month
Location requirements:
• Solid foundation
• Vibration free
• Dry
• Temperature range -40°F to 158°F
(-40°C to 70°C)
• Do not remove any plastic coverings
• Do not charge the chiller with refrigerant
• If additional refrigerant is on site, follow manufacturer’s storage requirements
1–6 months
Location requirements:
• Solid foundation
• Vibration free
• Dry
• Temperature range -40°F to 158°F
(-40°C to 70°C)
Greater than 6 months
Location requirements:
• Solid foundation
• Vibration free
• Dry
• Temperature range -40°F to 158°F
(-40°C to 70°C)
• Do not remove any plastic coverings • Do not remove any plastic coverings
• Do not charge the chiller with refrigerant • Do not charge the chiller with refrigerant
• If additional refrigerant is on site, follow manufacturer’s storage requirements
• If additional refrigerant is on site, follow manufacturer’s storage requirements
12 CVHE-SVX02M-EN
Less than 1 month 1–6 months Greater than 6 months
• Verify dry nitrogen pressure using gauge located on the evaporator shell reads
3 to 5 psig (20.7 to 34.5 kPaG)
• Notify the local Trane office if charge has escaped
• Do not operate purge unit
• Verify dry nitrogen pressure using gauge located on the evaporator shell reads
3 to 5 psig (20.7 to 34.5 kPaG)
• Notify the local Trane office if charge has escaped
• Do not operate purge unit
• Verify dry nitrogen pressure using gauge located on the evaporator shell reads 3 to 5 psig
(20.7 to 34.5 kPaG)
• Notify the local Trane office if charge has escaped
• Do not operate purge unit
• Verify waterbox and tube bundles are clean and dry
• Verify waterbox and tube bundles are clean and dry
• Conduct an oil analysis and verify no oil breakdown (a)
• Repeat yearly
• Replace oil if breakdown has occurred
• If no oil analysis program has been followed, replace oil prior to start-up
• Every six months, check unit pressure or vacuum and take note of changes that could indicate a leak; contact your local Trane office if any leaks occur
• Every six months, start the oil pump and rotate compressor shaft about 450° to prevent potential bearing issues
Trane Service Agency to perform this task
• If the chiller will be stored for more than six months after production, contact your local
Trane Service Agency for
required
extended storage actions to minimize impact to the chiller and preserve the warranty.
(a)
• Chillers stored five years or longer should be inspected for leaks every five years by a qualified service organization
If the chiller will be stored for more than six months after production, contact your local Trane Service Agency for
required
extended storage actions to minimize impact to the chiller and preserve the warranty.
CVHE-SVX02M-EN 13
Unit Components
designated as the front side of the unit.
14
1. Suction Elbow
2. Compressor
3. Terminal Box
4. Control Panel
5. Condenser
6. Motor Housing
7. Economizer
8. Oil Tank Assembly
9. Purge
10. Evaporator
11. Display Panel
CVHE-SVX02M-EN
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