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Millennium Enterprises Z33, Z34, Z42 VENT AND COMBUSTION AIR, FIGURE 7 - VENT AND COMBUSTION AIR HOODS, FIGURE 8 - CLEARANCES

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882108-YIM-B-1012

Johnson Controls Unitary Products 17

7. A 1/8 inch N.P.T. plugged tapping, accessible for test

gage connection, must be installed immediately

upstream of the gas supply connection to the furnace.

VENT AND COMBUSTION AIR

NOTE: All the hoods and hardware are shipped within the

evaporator section. Each hood must be properly

attached to the furnace doors to assure proper

operation and compliance with CSA/ETL safety cer-

tification. (Refer to Figure 7.)

The products of combustion are discharged horizontally

through hooded openings in the gas heat access doors.

(Figure 7)

1. Remove the shipping covers that are attached to the

heat section door covering the flue outlets.

2. Locate the flue which is shipped in the evaporator sec-

tion.

3. Place the flue over the flue outlet and attach with screws

provided.

4. Refer to the Gas Furnace Operation Instruction in the

Start-up Section of this manual for further instructions.

Disconnect gas piping from unit when leak testing

at pressures greater than 0.5 psig. Pressures

greater than 0.5 psig will cause gas valve damage

resulting in a hazardous condition. If gas valve is

subjected to pressure greater than 0.5 psig, it must

be replaced.

FIGURE 7 - VENT AND COMBUSTION AIR HOODS

COMBUSTION

AIR INLET

REMOVE SHIPPING

LABELS PRIOR TO

VENT INSTALLATION

HEAT SECTION DOOR

VENT FLUE

ASSEMBLY

EXHAUST VENT OUTLET

FIGURE 8 - CLEARANCES

60" 60"

60"

10'

60"

60"

60"

60"

60"

10'

* Front is the side with access to the Electrical/Gas Controls

LEFT RIGHT

END END

REAR

LEFT

RIGHT

REAR

FRONT

TOP

NOTE: DO NOT use the unit roof to support any type of

structure bracing.

FRONT

Contents

Main INSTALLATION MANUAL MILLENNIUM ROOFTOP 25, 30 & 40 TON 882108-YIM-B-1012 MODELS: Z42 Z33 Z34 TABLE OF CONTENTS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 GAS HEATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 GAS FURNACE OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 LIST OF FIGURES LIST OF TABLES NOMENCLATURE 123 4 CONTROL BASIC UNIT Z 3 Page GENERAL SAFETY CONSIDERATIONS NOTES, CAUTIONS AND WARNINGS GAS FIRED MODELS ALL MODELS INSTALLATION PRECEDING INSTALLATION LIMITATIONS LOCATION TABLE 1: COOLING & ELECTRICAL APPLICATION TABLE 3: STANDARD GAS HEATING CAPACITIES TABLE 4: TEMPERATURE RISE TABLE 5: MINIMUM HEATING CFM TABLE 6: MODULATING GAS HEATING CAPACITIES 882108-YIM-B-1012 FIGURE 2 - TYPICAL RIGGING TABLE 7: MODULATING HEAT TABLE 8: UNIT WEIGHTS TABLE 9: SUPPLY FAN MOTOR VFD WEIGHTS TABLE 10: EXHAUST FAN MOTOR VFD WEIGHTS FIGURE 3 - CENTER OF GRAVITY RIGGING AND HANDLING TABLE 11: UNIT CORNERWEIGHT TABLE 12: UNIT CENTER OF GRAVITY DUCTWORK AIR HOODS FOR FIXED OUTSIDE AIR (UNITS WITH MANUAL ECONOMIZER) AIR HOODS FOR ECONOMIZER AIR HOODS FOR EXHAUST AIR CONDENSATE DRAIN SERVICE ACCESS COMPRESSORS FILTERS THERMOSTAT (CONSTANT VOLUME UNITS) SPACE SENSOR (VARIABLE AIR VOLUME UNITS) POWER AND CONTROL WIRING GAS HEATING GAS PIPING GAS CONNECTION TABLE 14: PIPE SIZES FIGURE 6 - TYPICAL GAS PIPING CONNECTION VENT AND COMBUSTION AIR FIGURE 7 - VENT AND COMBUSTION AIR HOODS FIGURE 8 - CLEARANCES ELECTRIC HEAT HOT WATER HEAT STEAM HEAT FIGURE 9 - HOT WATER PIPING CROSS-SEC- TION FIGURE 10 - STEAM PIPING CROSS-SECTION STATIC PRESSURE CONTROL PLASTIC TUBING EXHAUST STATIC PRESSURE 882108-YIM-B-1012 SUPPLY AIR C REAR FRONT LEFT RIGHT END FRONT REAR RIGHT END LEFT END FRONT FRONT RIGHT END LEFT END REAR FIGURE 13 - BOTTOM RETURN, FRONT & REAR SUPPLY LEFT END RIGHT END RIGHT END FIGURE 14 - END RETURN, FRONT & REAR SUPPLY OPEN B C TABLE 15: GENERAL PHYSICAL DATA TABLE 16: REFRIGERANT FACTORY CHARGE R-410A TABLE 17: ELECTRICAL DATA 25 TON BASIC UNIT R-410A TABLE 18: ELECTRICAL DATA 30 TON BASIC UNIT R-410A TABLE 19: ELECTRICAL DATA 40 TON BASIC UNIT R-410A TABLE 20: ELECTRICAL DATA 25 TON W/ELECTRIC HEAT R-410A TABLE 21: ELECTRICAL DATA 30 TON W/ELECTRIC HEAT R-410A TABLE 22: ELECTRICAL DATA 40 TON W/ELECTRIC HEAT R-410A TABLE 23: ELECTRICAL DATA 25 TON W/POWER EXHAUST R-410A TABLE 24: ELECTRICAL DATA 30 TON W/POWER EXHAUST R-410A TABLE 25: ELECTRICAL DATA 40 TON W/POWER EXHAUST R-410A TABLE 26: ELECTRICAL DATA 25 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A Page TABLE 26: ELECTRICAL DATA 25 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A (CONTINUED) TABLE 27: ELECTRICAL DATA 30 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A Page TABLE 27: ELECTRICAL DATA 30 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A (CONTINUED) TABLE 28: ELECTRICAL DATA 40 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A Page TABLE 28: ELECTRICAL DATA 40 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A (CONTINUED) FIGURE 15 - FIELD INSTALLED DISCONNECT * FIGURE 16 - 40 TON CONDENSER DETAIL FIGURE 17 - PARTIAL ROOF CURB MODEL 1RC0455P A B CFM, STATIC PRESSURE, AND POWER - ALTI- TUDE AND TEMPERATURE CORRECTIONS TABLE 29: ALTITUDE CORRECTION FACTORS Page TABLE 30: FAN PERFORMANCE - 25 TON 1, 25 Ton Forward Curve TABLE 31: FAN PERFORMANCE - 30 TON 1, 2 30 Ton Forward Curv TABLE 32: FAN PERFORMANCE - 40 TON1,2 40 Ton Forward Curve TABLE 33: COMPONENT STATIC RESIST ANCE TABLE 34: SUPPLY FAN MOTOR AND DRIVE DATA TABLE 35: EXHAUST FAN DRIVE DATA TABLE 36: POWER EXHAUST - ONE FORWARD CURVED FAN 25 TON Page TABLE 37: POWER EXHAUST - TWO FORWARD CURVED FANS - 30 & 40 TON Page START-UP COMPRESSOR ROTATION FIGURE 24 - BELT TENSION ADJUSTMENT SUPPLY AIR FAN INSTRUCTIONS TABLE 38: BELT ADJUSTMENT SYSTEM SETPOINTS TABLE 39: BLOWER SPEED RATE OF CHANGE TABLE 40: 25 TON DRIVE ADJUSTMENT TABLE 41: 30 TON DRIVE ADJUSTMENT TABLE 42: 40 TON DRIVE ADJUSTMENT TABLE 43: DRIVE ADJUSTMENT FOR POWER EXHAUST - 25 TON GAS FURNACE OPERATING INSTRUCTIONS TO LIGHT THE MAIN BURNERS TO SHUT DOWN POST-START CHECKLIST (GAS) MANIFOLD GAS PRESSURE ADJUSTMENT C --------------------------------------------------------------------------= FM Btuh 0.8 1.08 F Degrees Temp Rise ELECTRIC HEATING COOLING OPERATING INSTRUCTIONS SERVICE FIGURE 26 - TYPICAL FLAME APPEARANCE REFRIGERATION SYSTEM COMPRESSORS MOTORS TABLE 46: STEAM COIL (1 ROW, 25 & 30 TON) TABLE 47: STEAM COIL (1 ROW, 40 TON) TABLE 48: STATIC RESIST ANCE STEAM COIL (25 & 30 TON) TABLE 49: STATIC RESISTANCE STEAM COIL (40 TON) TABLE 50: HOT WATER COIL (1 ROW 25 & 30 TON) TABLE 51: HOT WATER COIL (1 ROW , 40 TON) TABLE 52: WATER PRESSURE DROP (1 ROW , 25 & 30 TON) TABLE 53: WATER PRESSURE DROP (1 ROW, 40 TONS) TABLE 54: HOT WATER COIL (2 ROW, 25 & 30 TON) Page Page Page Page Page Page Page Page Page Page Page Page Page Page GAS FURNACE SAFETY FEATURES MAINTENANCE NORMAL MAINTENANCE GAS BURNER TABLE 59: INDOOR BLOWER BEARING LUBRICATION SCHEDULE SECURE OWNERS APPROVAL NOTE: FIGURE 48 - TYPICAL FLUE BAFFLE 25 TON CHARGING CURVE DISCHARGE PRESSURE (PSIG) 30 TON CHARGING CURVE 40 TON CHARGING CURVE DISCHARGE PRESSURE (PSIG) PRESSURE DROP ACROSS A DRY EVAPORATOR COIL 25T PRESSURE DROP ACROSS A DRY EVAPORATOR COIL - 30T LIOC ROTAROPAVE YRD A SSORCA PORD ERUSSERP T04 PRESSURE DROP (in. wg.) FIGURE 55 - R-410A QUICK REFERENCE GUIDE R-410A QUICK REFERENCE GUIDE Refer to Installation Instructions for specific installation requirements.