Pre-Start Checkout - Trane CITY RTSF Series Manual

Pre-Start Checkout

CAUTION
Proper Water Treatment!
The use of untreated or improperly treated water may result in scaling, erosion, corrosion, algae or slime. It is
recommended that the services of a qualifi ed water treatment specialist be engaged to determine what water
treatment, if any, is required. Trane assumes no responsibility for equipment failures which result from untreated
or improperly treated water, or saline or brackish water.
Installation Checklist
Complete this checklist as the unit is installed, and verify that all recommended procedures are accomplished before
the unit is started. This checklist does not replace the detailed instructions given in the "Installation Mechanical"
and "Installation Electrical" sections of this manual. Read both sections completely, to become familiar with
the installation procedures, prior beginning the work.
Heating capacity (4) (kW) 6,3 G2 fi lter (fi lter box accessory) the work.
General
When installation is complete, before starting the unit, the following prestart procedures must be reviewed
and verifi ed:
1. Inspect all wiring connections in the compressor power circuits (disconnects, terminal block, contactors,
compressor junction box terminals and so forth) to ensure they are clean and tight.
2. Open all refrigerant valves in the discharge, liquid, and oil return lines.
3. Check the power-supply voltage to the unit at the main-power fused-disconnect switch. Voltage must be within
the voltage use range and also stamped on the unit nameplate. Voltage fl uctuation must not exceed 10%.
Voltage imbalance must not exceed 2%.
4. Check the unit power phasing L1-L2-L3 in the starter to ensure that it has been installed in a "A-B-C" phase
sequence.
5. Fill the evaporator and condenser water circuit. Vent the system while it is being fi lled. Open the vents on the top
of the evaporator water and condenser boxes while fi lling and close when fi lling is completed.
6. Close the fused-disconnect switch(es) that supplies power to the chilled-water pump starter.
7. Start the evaporator and condenser water pump to begin circulation of the water. Inspect all piping for leakage
and make any necessary repairs.
8. With water circulating through the system, adjust the water fl ow and check the water pressure drop through
the evaporator and condenser.
9. Adjust the chilled-water fl ow switch for proper operation.
10. Reapply power to complete the procedures.
11. Prove all Interlock and Interconnecting Wiring Interlock and External as described in the Electrical Installation
section.
12. Check and set, as required, all UC800 TD7 menu items.
13. Stop the evaporator and condenser water pump.
14. Energize the compressor and oil separator heaters 24 hours, prior to unit start up.
Unit Voltage Power Supply
Unit voltage must meet the criteria given in the installation Electrical Section. Measure each lead of the supply
voltage at the main power fused-disconnect switch for the unit. If the measured voltage on any lead is not within
the specifi ed range, notify the supplier of the power and correct the situation before operating the unit.
Unit Voltage Imbalance
Excessive voltage imbalance between the phases of a three-phase system can cause motors to overheat and
eventually fail. The maximum allowable unbalance is 2%. Voltage imbalance is determined using the following
calculations:
% Imbalance = [(Vx – Vave) x 100/Vave]
Vave = (V1 + V2 + V3)/3
Vx = phase with greatest difference from Vave (without regard to the sign)
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