START-UP CHECKLIST
I. PRELIMINARY INFORMATION
INDOOR UNIT: MODEL NO.
OUTDOOR UNIT: MODEL NO.
SERIAL NO.
SERIAL NO.
ACCESSORIES: __________________________________________________________________________________
PISTONS (538A AND 538B SYSTEMS ONLY):
INDOOR SIZE:
OUTDOOR SIZE (538B SYSTEMS ONLY):
REFRIGERANT PIPING: EQUIVALENT LINE LENGTH:
(IF OVER 50 FT)*
LIFT:
FAN COIL ABOVE OUTDOOR UNIT (IF OVER 25 FT)*?
FAN COIL BELOW OUTDOOR UNIT (IF OVER 25 FT)*?
*APPLIES ONLY TO 538A AND 538B UNITS USING LONG-LINES APPLICATIONS. MAXIMUM EQUIVALENT LINE LENGTH
FOR 538S SYSTEMS IS 50 FT. MAXIMUM LIFT ON 538S APPLICATIONS IS 30 FT FROM LOWEST SYSTEM POINT TO
HIGHEST SYSTEM POINT.
PRE-START-UP
INDOOR UNIT (REFER TO OUTDOOR UNIT INSTALLATION INSTRUCTIONS FOR OUTDOOR UNIT
PRE-START-UP FUNCTIONS)
IS THERE ANY SHIPPING DAMAGE?
IF YES, WHERE?
WILL THIS DAMAGE PREVENT UNIT START-UP?
CHECK POWER SUPPLY. IS IT 208/230, SINGLE PHASE?
HAS GROUND WIRE BEEN CONNECTED?
HAS THE CORRECT SIZE FUSE OR HACR BREAKER BEEN PROVIDED?
ARE POWER WIRES TO THE UNIT SIZED AND INSTALLED PROPERLY?
IS THE DISCONNECT SWITCH INSTALLED IN SIGHT FROM THE UNIT?
IS THE LOW-VOLTAGE CABLE (INDOOR TO OUTDOOR UNIT) RUN AND CONNECTED PROPERLY?
HAS CONDENSATE DRAIN BEEN RUN AND SLOPED PROPERLY?
IS AIR FILTER(S) IN PLACE?
IS UNIT MOUNTED LEVEL?
IS COOLING PISTON INSTALLED, THE CORRECT SIZE, AND IN THE CORRECT DIRECTION
(538A AND 538B SYSTEMS ONLY)?
IS HEATING PISTON INSTALLED, THE CORRECT SIZE, AND IN THE CORRECT DIRECTION
(538B SYSTEMS ONLY)?
PIPING
IS A LIQUID LINE SOLENOID INSTALLED IF REQUIRED BY LONG-LINE APPLICATIONS
(538A AND 538B SYSTEMS ONLY)?
IS FILTER DRIER INSTALLED AT THE OUTDOOR UNIT (538A AND 538B SYSTEMS ONLY)?
HAVE LEAK CHECKS BEEN MADE AT THE COMPRESSOR, OUTDOOR UNIT, FLARE CONNECTIONS, FILTER
DRIERS, AND FUSIBLE PLUGS WITH A LEAK DETECTOR?†
†FIELD PIPING AND ALL TUBING CONNECTIONS MUST BE LEAK TESTED BY THE PRESSURE METHOD. USE
R-22 AT APPROXIMATELY 25 PSIG BACKED UP WITH AN INERT GAS TO REACH A TOTAL SYSTEM PRESSURE
NOT TO EXCEED 245 PSIG.
CL-1
