RTWB-SVN01B-E4
29
Pre-start checkout
General
When installation is complete, but
prior to putting the unit into service,
the following pre-start procedures
must be reviewed and verified:
[ ] Inspect all wiring connections to
be sure they are clean and tight.
W
WA
AR
RN
NIIN
NG
G
Disconnect all electric power,
including remote disconnects,
before servicing. Failure to
disconnect power before servicing
can cause severe personal injury or
death.
C
CA
AU
UT
TIIO
ON
N
Check the tightness of all
connections in the compressor
power circuit (disconnects, terminal
block, contactors, compressor
junction box terminals, …). Loose
connections can cause overheating
at the connections and
undervoltage conditions at the
compressor motor.
[ ] Verify that all refrigerant valves
are open.
C
CA
AU
UT
TIIO
ON
N
Do not operate the unit with the
compressor, oil discharge, or liquid
line valves closed. Failure to have
these open may cause serious
compressor damage.
[ ] Check the power supply voltage
to the unit at the main-power,
fused disconnect switch. Voltage
must be within the voltage
utilization range, given in Table 7
and also stamped on the unit
nameplate. Voltage imbalance
must not exceed 2%
W
WA
AR
RN
NIIN
NG
G
Disconnect all electric power,
including remote disconnects,
before servicing. Failure to
disconnect power before servicing
can cause severe personal injury or
death.
[ ] Check the unit power phasing to
be sure that it has been installed
in an “ABC“ sequence.
W
WA
AR
RN
NIIN
NG
G
It is imperative that l1-l2-l3 in the
starter be connected in the A-B-C
phase sequence to prevent
equipment damage due to reverse
rotation.
[ ] Fill the evaporator and condenser
chilled-water circuits. Refer to
Table 2 for liquid capacities. Vent
the system while it is being filled.
Open the vents on the top of the
evaporator and condenser during
filling, and close them when
filling is completed
The use of improperly treated or
untreated water in this equipment
may result in scaling, erosion,
corrosion, algae, or slime. The
services of a qualified water
treatment specialist should be
engaged to determine what
treatment, if any, is advisable. The
Trane Company warranty specifically
excludes liability of corrosion,
erosion, or deterioration of Trane
equipment. Trane assumes no
responsibilities for the results of the
use of untreated or improperly
treated water or saline or brackish
water.
C
CA
AU
UT
TIIO
ON
N
Do not use untreated or improperly
treated water. Equipment damage
may occur
[ ] Close the fused disconnect
switch that supplies power to the
chilled-water pump starter and
the condenser pump starter.
[ ] Start the chilled-water pump and
condenser-water pump to begin
circulation of the water. Inspect
all piping for leakage and make
any necessary repairs.
[ ] With water circulating through
the system, adjust the water flow
and check the water-pressure
drop through the evaporator and
condenser. Refer to Tables 5 and
6.
[ ] Adjust the chilled-water flow
switch and the condenser-water
flow switch (if installed) for
proper operation.
[ ] Prove all interlock and
interconnecting wiring interlock
as described in section 3.
[ ] Check and set, as required, all
Clear Language Display menu
items.
[ ] Stop the chilled-water pump and
the condenser-water pump.
Unit Start-Up
Procedures
