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MODEL NO.:
DATE:
I. PRE-START-UP:
VERIFY THAT UNIT IS LEVEL
VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT
LOOSEN ALL SHIPPING HOLDDOWN BOLTS AND REMOVE SHIPPING BRACKETS PER INSTRUCTIONS
VERIFY THAT COMPRESSOR SUSPENSION SPRINGS HAVE BEEN LOOSENED PER INSTRUCTIONS
VERIFY ASSEMBLY OF ECONOMIZER HOOD
VERIFY INSTALLATION OF EXHAUST HOOD
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS
VERIFY THAT POWER SUPPLY MATCHES UNIT DATA PLATE
VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
CHECK GAS PIPING FOR LEAKS (48MP ONLY)
CHECK THAT INDOOR-AIR FILTERS ARE CLEAN AND IN PLACE
CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SET SCREW
IS TIGHT
VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
OPEN SUCTION, DISCHARGE, AND LIQUID LINE SERVICE VALVES
CHECK COMPRESSOR OIL LEVEL SIGHT GLASS AND VERIFY PROPER LEVEL
VERIFY THAT CRANKCASE HEATERS HAVE BEEN ENERGIZED FOR 24 HOURS
CHECK VOLTAGE IMBALANCE
LINE-TO-LINE VOLTS:
(AB + AC + BC)/3 = AVERAGE VOLTAGE =
MAXIMUM DEVIATION FROM AVERAGE VOLTAGE =
VOLTAGE IMBALANCE = 100 X (MAX DEVIATION)/(AVERAGE VOLTAGE) =
IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START SYSTEM!
CALL LOCAL POWER COMPANY FOR ASSISTANCE.
II. PRELIMINARY CHECKLIST ITEMS
CONTROL SETTINGS FOR NON-NETWORKED, FREESTANDING UNIT
UNIT TO BE OPERATED ON CONSTANT AIR VOLUME (CV) RATHER THAN VARIABLE-AIR VOLUME (VAV)
CONFIRM THAT SPACE TEMPERATURE SENSOR (T55) HAS BEEN WIRED CORRECTLY PER SPACE
TEMPERATURE SENSOR (T55) SECTION ON PAGE 17.
CONFIRM THAT TUBING FOR SPACE AND SUPPLY DUCT PRESSURES HAS BEEN INSTALLED
SET ENTHALPY CONTROL SET POINT ON ECONOMIZER
SET SUPPLY FAN AND ''CHECK FILTER'' STATUS SWITCHES FOR JOB REQUIREMENTS
UNIT OPTION CHECKLIST
ITEM
PRESENT?
A
B
C
D
E
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 1
PC 111
Tab
1a 1b
START-UP CHECKLIST
AB
V
(DETERMINE BEFORE CONFIGURING CONTROLS):
CONSTANT VOLUME POWER EXHAUST
VARIABLE VOLUME POWER EXHAUST
VARIABLE FREQUENCY DRIVE ON SUPPLY FAN (VAV ONLY)
HOT GAS BYPASS
VAV WITH OCCUPIED HEAT
Catalog No. 534-893
Printed in U.S.A.
SERIAL NO.:
TECHNICIAN:
AC
V
BC
V
V
Form 48/50MP-1SI
V
%
CL-1
12-98
Replaces: 50MP-1SI
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