CONTENTS
Installing Flue/Inlet Hoods 48 Series Units
Gas Manifold Pressure 48 Series
Evaporator-FanBelts, Pulleys, and Sheaves . .
CONTENTS cont
SAFETY CONSIDERATIONS
INSTALLATION
GENERAL
Fig. 1 Ð Rigging Label
Table 1A Ð Physical Data; 034, 044 Units
Table 1B Ð Physical Data; 054-074Units
To attach ductwork to roof curb, insert duct approxi- mately 10 to 11 in. up into roof curb. Connect ductwork to 14-gageroof curb material with sheet metal screws driven from inside of the duct
Fig. 3A Ð Roof Curb; 034, 044 Units
Fig. 3B Ð Roof Curb; 054-074Units
UNIT
Install Outdoor Hoods
Outdoor-AirInlet Adjustments
UNIT
5400
8700
UNIT
Fig. 5 Ð Drain Location Selection
Fig. 8 Ð Condensate Drain Piping Details
Fig. 6 Ð Condensate Drain Location
Fig. 9 Ð Outdoor-AirHood
Fig. 10 Ð Outdoor-AirDamper Adjustments
Fig. 13 Ð Psychrometric Chart for
Fig. 12 Ð Enthalpy Sensor Location
Inside of Hood Shown
Field Wire Routing
Fig. 14 Ð Wiring Connections for Solid-State
Position Setting Adjustments
Field Electrical Connections
50 Series Horizontal Discharge Shown
Fig. 18 Ð Field Power Wiring Connections
Fig. 17 Ð Disconnect Location, 054-074Units
Table 3 Ð Electrical Data, 034 Units
208/230-3-60 V-Ph-Hz
Table 3 Ð Electrical Data, 034 Units cont
460-3-60 V-Ph-Hz
Table 3 Ð Electrical Data, 034 Units cont
575-3-60 V-Ph-Hz
Table 4 Ð Electrical Data, 044 Units
Table 4 Ð Electrical Data, 044 Units cont
Table 4 Ð Electrical Data, 044 Units cont
BASE UNIT WITH
Table 5 Ð Electrical Data, 054 Units
Table 5 Ð Electrical Data, 054 Units cont
Table 5 Ð Electrical Data, 054 Units cont
BASE UNIT WITH
Table 6 Ð Electrical Data, 064 Units
Table 6 Ð Electrical Data, 064 Units cont
Table 6 Ð Electrical Data, 064 Units cont
BASE UNIT WITH
Table 7 Ð Electrical Data, 074 Units
Table 7 Ð Electrical Data, 074 Units cont
Table 7 Ð Electrical Data, 074 Units cont
BASE UNIT WITH
Fig. 19 Ð Field Control Thermostat Wiring
NOTES AND LEGEND FOR FIG.
OPTIONAL MODULATING POWER EXHAUST
OPTIONAL MODULATING POWER EXHAUST
034 AND 044 UNITS
BASE UNIT BASE UNIT BASE UNIT
Installing Flue/Inlet Hoods 48 Series Units Only
Fig. 21 Ð Gas Piping Details
Fig. 22 Ð Flue/Inlet Hood, 034,044 Units
Fig. 23 Ð Inlet Hood
Fig. 24 Ð Flue Hood
Fig. 25 Ð Flue De¯ector Baffles, 034,044 Units
Fig. 27 Ð Flue/Inlet Hood, 054-074Units
Fig. 28 Ð Flue/Inlet Hood Close-Up
PRE-START-UP
Fig. 30 Ð Shipping Brackets; 034,044 Units and
50 Series Vertical Discharge 054-074Units
Table 8 Ð Oil Charge
Gas Manifold Pressure 48 Series Units Only
Evaporator-FanBelts, Pulleys, and Sheaves Ð
Table 10 Ð Air Quantity Limits cfm
START-UP General
Fig. 32 Ð Condenser-FanAdjustment
Initial Check
SERVICE
Fig. 34 Ð Typical Filter Drier and Liquid Service
Valve Access
Fig. 35 Ð Modulating Power Exhaust Damper
Motor Access, 034 and 044 Units
Fig. 40 Ð Flue Box Assembly, 48 Series Units Only
Shown with Burner Assembly
Fig. 37 Ð Gas Section Detail, 48 Series 034 and
044 Units
Fig. 43 Ð Inlet Guide Vane Motor
Lubrication
Fig. 42 Ð Typical Electric Heat Control Box
Adjustments
Fig. 44 Ð Motor Plate Adjustment
Fig. 46 Ð Charging Chart, 034 Units; System
Fig. 47 Ð Charging Chart, 034 Units; System
Fig. 48 Ð Charging Chart, 034 Units; System
Fig. 45 Ð Pulley Alignment
Fig. 49 Ð Charging Chart, 034 Units; System
Fig. 50 Ð Charging Chart, 044 Units; System
Fig. 51 Ð Charging Chart, 044 Units; System
Fig. 52 Ð Charging Chart, 044 Units; System
Fig. 55 Ð Charging Chart, 054 Units; System
Fig. 56 Ð Charging Chart, 064 Units; System
Fig. 57 Ð Charging Chart, 064 Units; System
Fig. 58 Ð Charging Chart, 074 Units; System
Fig. 60 Ð Auxiliary Switch Stroke Adjustment
Main Burner Removal 48 Series Units Only
Protective Devices
TROUBLESHOOTING
Fig. 62 Ð Typical Compressor Overtemperature
High- and Low-PressureSwitch Locations
Table 11 Ð Pressure Switch Settings psig
Table 16 Ð Economizer Control Board Checkout Test
Table 14 Ð Economizer Control Board Checkout Test
Table 15 Ð Economizer Control Board Checkout Test
Fig. 64 Ð Control Board Component Arrangement
Symptom: Compressor no. 2 will not operate
3.Reconnect the wires removed in Step
1.Turn unit power off. Disconnect plugs P1 and P3
6.Turn unit power off. Reconnect plugs P1 and P4
LEGEND CLO Ð Compressor Lockout PÐ Plug
Fig. 65 Ð Compressor Lockout Connections
SC Ð Safety Circuit
LEGEND FOR FIG.
Fig. 66 Ð Gas Heat Sections; 48DJ,NP034,044 Units
Fig. 67 Ð Gas Heat Sections; 48DJ,NP054-074Units
Fig. 68 Ð Gas Heat Section; 48DK034,044 Units
Fig. 69 Ð Gas Heat Section; 48DK054-074Units
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PACKAGED SERVICE TRAINING
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START-UP
START-UPCHECKLIST
TEMPERATURES
PRE-START-UP