10
CDHF-SVX01N-EN
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.
N
No
otte
e:: Since there are two refrigerant circuits in
Duplex™ CenTraVac™ chillers, both must be
checked.
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.
N
No
otte
e:: The holding charge should register
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. For Duplex™, verify charge on both
units.
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.
IIm
mp
po
orrtta
an
ntt:: If isolation springs are installed, do NOT
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
in the following table.
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