Trane IntelliPak 1 User Manual

RT-SVX072A-EN
115
OCC/UNOCC Relay (Unoccupied for VAV units)
All Compressors for each circuit (On)
Condenser Fans for each circuit (On)
WWAARRNNIINNGG
RRoottaattiinngg CCoommppoonneennttss!!
FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr bbeeffoorree sseerrvviicciinngg ccoouulldd
rreessuulltt iinn rroottaattiinngg ccoommppoonneennttss ccuuttttiinngg aanndd ssllaasshhiinngg
tteecchhnniicciiaann wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss
iinnjjuurryy..
DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr
lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr
ccaann nnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd..
4. Press the Auto Button key to start the test.
Remember that the delay designated in step 4 must
elapse before the system will begin to operate.
5. After all of the compressors and condenser fans for
the number 1 circuit have been operating for
approximately 30 minutes, observe the operating
pressures. Use the appropriate pressure curve
found in “Pressure Curves,” p. 102 to determine the
proper operating pressures. For superheat and
subcooling guidelines, refer to “Electronic
Expansion Valves,” p. 118.
IImmppoorrttaanntt:: Do Not release refrigerant to the
atmosphere! If adding or removing
refrigerant is required, the service
technician must comply with all
Federal, State and local laws.
6. Verify that the oil level in each compressor is
correct. The oil level may be down to the bottom of
the sightglass but should never be above the
sightglass.
7. Press the STOP key and clear all Manual Overrides
in the unit control panel to stop the system
operation.
8. Repeat steps 1 through 8 for the number 2
refrigeration circuit.
Compressor Crankcase Heaters
Please see the table below for the crankcase heater
sizes used for each compressor type.
Table 50. Crankcase heater sizes
Compressor Name
Crankcase Heater Watts
ZPS* 70
ZP*
90
CSHD*
VZH088*, VZH117*
Table 50. Crankcase heater sizes (continued)
Compressor Name
Crankcase Heater Watts
VZH170*
160
CSHN*
Compressor Operational Sounds
At Low Ambient Start-Up
When the compressor starts up under low ambient
conditions, the initial flow rate of the compressor is low
due to the low condensing pressure. This causes a low
differential across the expansion valve that limits its
capacity. Under these conditions, it is not unusual to
hear the compressor rattle until the suction pressure
climbs and the flow rate increases.
Variable Speed Compressors
At all operating speeds, eFlex™ permanent magnet
variable speed compressors sound different than fixed
speed scrolls. At low speed, variable speed
compressors can sputter. At high speed, variable speed
compressor buzz. These are normal operating sounds.
To ensure a quiet installation, eFlex variable speed
compressors are installed in a sound enclosure. Make
sure and keep the sound enclosure installed at all times
other than servicing.
IImmppoorrttaanntt:: Variable speed scroll compressors sound
different than single speed scroll
compressors. Sound changes with speed
and condition.
Electronic Compressor Protection
Module (CPM)
The CSHN*** compressors come equipped with a
compressor protection device (CPM) capable of
detecting phase reversal, phase loss, and motor
overheating. When a fault is identified, the output relay
will open. Depending on the fault, the CPM may either
auto-reset or it may lock-out. The CPM can be manually
reset by cycling control power.
NNoottee:: If the compressor has tripped due to an
overheated windings condition, the motor
winding temperature sensor resistance (PTC) will
be 4500 ohms or greater; the resistance must be
less than 2750 ohms before the 5 minute reset
timer becomes enabled.
UUnniitt SSttaarrttuupp

Trane IntelliPak 1 Specifications

General

Brand	Trane
Model	IntelliPak 1
Category	Air Conditioner
Language	English