Installation manual

ManualsBrandsYork ManualsAir ConditionerMILLENNIUM Y14

CONTENTS

NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . 5

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . 6

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

GAS HEATING . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

GAS FURNACE OPERATING INSTRUCTIONS . 67

SEQUENCE OF OPERATION . . . . . . . . . . . . . . . 69

HEAD PRESSURE CONTROL . . . . . . . . . . . . . . 78

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . 95

See the following pages for a complete Table of Contents.

NOTES, CAUTIONS AND WARNINGS

Installer should pay particular attention to the words: NOTE,

CAUTION, and WARNING. Notes

are intended to clarify or

make the installation easier. Cautions

are given to prevent

equipment damage. Warnings

are given to alert installer

that personal injury and/or equipment damage may result if

installation procedure is not handled properly.

INSTALLATION

MANUAL

CAUTION: READ ALL SAFETY GUIDES BEFORE YOU

BEGIN TO INSTALL YOUR UNIT.

SAVE THIS MANUAL

MILLENNIUM™ ROOFTOP

035-16682-000-E-0303

MODELS: Y12

Y13

Y14

Summary of content (104 pages)

PAGE 1
INSTALLATION MANUAL MILLENNIUM™ ROOFTOP MODELS: CONTENTS NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . 5 Y12 Y13 Y14 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . 6 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 GAS HEATING . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 GAS FURNACE OPERATING INSTRUCTIONS .
PAGE 2
035-16682-000-E-0303 TABLE OF CONTENTS NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . 5 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 6 SYSTEM SETPOINTS . . . . . . . . . . . . . . . . . . . . . . . . . . 63 NOTES, CAUTIONS AND WARNINGS . . . . . . . . . . . . . . 6 GAS FIRED MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 3
035-16682-000-E-0303 LIST OF FIGURES Fig. # 1 Pg. # Fig. # Pg. # TYPICAL RIGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 31 ECONOMIZER RESPONSE EXAMPLE . . . . . . . . . . . 72 2 CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . . . . . . . 9 32 ECONOMIZER RESPONSE EXAMPLE . . . . . . . . . . . 77 3 RECOMMENDED DRAIN PIPING . . . . . . . . . . . . . . . . 12 33 HOT WATER COIL - 25 & 30T, 1 ROW, AT 10 GPM . 83 4 TYPICAL THERMOSTAT WIRING . . . . . . . . . . . . . . .
PAGE 4
035-16682-000-E-0303 LIST OF TABLES Tbl. # Pg. # 1 COOLING & ELECTRICAL APPLICATION . . . . . . . . . . 7 2 COOLING & ELEC. APP. LIMITATIONS . . . . . . . . . . . . 7 3 GAS APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . 8 4 UNIT WEIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 UNIT CORNERWEIGHT . . . . . . . . . . . . . . . . . . . . . . . 10 6 UNIT CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . 10 7 CONTROL WIRE SIZES . . . . . . . . . . . . .
PAGE 5
Unitary Products Group 1 - BOTTOM RETURN 2 - BOTTOM SUPPLY 3 - END RETURN 4 - REAR SUPPLY 5 - FRONT SUPPLY 0 (ZER0) NO HEAT C X 1- 1 ROW W 1 - 1 ROW 2 - 2 ROW 4 - 40 KW 8 - 80 KW 1 - 108 KW (1) E N/S 2 - 233 MBH 4 - 466 MBH 7 - 700 MBH (40T ONLY) 5 - FC 6 - AF 1 - CV (5) 2 - VAV (IGV) 3 - VAV (VFD-CUSTOMER) 4 - VAV (VFD -FACTORY INSTALLED) 9 - BY-PASS VFD Q - 9,5,7 R - 9,5,8 S - 9,6,7 T - 9,6,8 M - 4,5,7 7 - 1” DEFLECTOR N - 4,5,8 8 - 2” DEFLECTOR O - 4,6,7 P - 4,6,8 I - 3,5,7 J - 3,5,8 K - 3,
PAGE 6
035-16682-000-E-0303 GENERAL YORK Model Y12/Y13/Y14 units are single package cooling only or cooling with gas, electric, hot water or steam heating designed for outdoor installation on a rooftop and for non-residential use. The units are completely assembled on rigid, permanently attached base rails. All piping, refrigerant charge, and electrical wiring is factory installed and tested. The units require electric power, gas, steam, or hot water connections and duct connections.
PAGE 7
035-16682-000-E-0303 REFERENCE Additional information is available in the following reference forms: • • 530.70-TG1Y - Technical Guide 530.70-RP1Y - Unit Replacement Parts List (25, 30 & 40 Tons) If components are to be added to a unit to meet local codes, they are to be installed at the contractor's and/or the customer's expense. Size of unit for proposed installation should be based on heat loss / heat gain calculation made according to the methods of the Air Conditioning Contractors of America (ACCA).
PAGE 8
035-16682-000-E-0303 TABLE 3: GAS APPLICATION DATA INPUT CAPACITY (MBH) 0 TO 2,000 FEET ABOVE SEA LEVEL 3,000 FEET ABOVE 4,000 FEET ABOVE SEA LEVEL4 SEA LEVEL4 AVAILABLE ON MODELS MAX. MIN. MAX. MIN. MAX. MIN. 233 233 205 205 196 196 Y12, Y13, Y14 466 233 410 205 392 196 6995 233 615 205 587 196 TEMP. RISE °F GAS AT FULL INPUT2 3 RATE1 (FT.3/HR.) MIN. MAX. 217 5 35 Y12, Y13, Y14 434 15 45 Y14 650 20 50 1. Based on maximum input and 1075 Btu/Ft.3 2.
PAGE 9
035-16682-000-E-0303 TABLE 4: UNIT WEIGHTS COMPONENT Basic Unit1 40KW 80KW 108KW Hot Water Coil 1 Row Hot Water Coil 2 Row 7.5hp 10hp 15hp 20hp 25hp Inlet Guide Vanes w/ Actuator 30 TON 40 TON 4,300 4,600 5,100 Gas Heat 90 90 180 180 270 270 Electric Heat 75 75 90 90 100 100 Hot Water Heat 233 MBH 466 MBH 699 MBH Steam Coil 1 Row 25 TON 75 90 100 71 lbs. 71 lbs 90 90 lbs. 90 lbs. CONDENSER COIL END X Y FIGURE 2 1. BACK D 83 " 0/10 50/90 85/110 165/200 175 205 VFD2 24 lbs.
PAGE 10
035-16682-000-E-0303 TABLE 5: UNIT CORNERWEIGHT 25 TON 30 TON 40 TON UNIT DESCRIPTION A B C D A B C D A B C D Basic Unit 988 988 1162 1162 1011 987 1189 1213 1088 1088 1363 1363 Basic Unit With Economizer 1058 1058 1192 1192 1106 1080 1194 1220 1153 1153 1398 1398 Basic Unit With Economizer and Gas or Electric Heat 1107 1107 1232 1232 1131 1080 1259 1310 1203 1173 1437 1467 Basic Unit With Economizer and Gas or Electric Heat and Power Exhaust 1261 12
PAGE 11
035-16682-000-E-0303 When the unit is equipped with power exhaust fans or return air fan the return duct should have a 90 elbow before opening to the building space to abate noise. (GAS HEATING OPERATION) Excessive exposure to contaminated combustion air will result in safety and performance related problems. To maintain combustion air quality, the recommended source of combustion air is the outdoor air supply.
PAGE 12
035-16682-000-E-0303 FILTERS U N IT B A S E D R A IN C O N N E C T IO N F A C T O R Y IN S T A L L E D Y R O C U O P E R IM S U P P S T R U C R O F R B E T E R O R T T U R E Throwaway or rigid filters are supplied with each unit. Filters must always be installed ahead of evaporator coil and must be kept clean or replaced with same size and type. Dirty filters will reduce the capacity of the unit and will result in frosted coils or safety shutdown. Required filter sizes are shown in Table 9.
PAGE 13
035-16682-000-E-0303 C M -V A V Y E L 7 R P Y E L T S R S T 6 L E G E N D R P S R S M O U N T E D IN C O N T R O L B O X FIGURE 5 - M A N U A L P O T E N T IO M E T E R S P A C E R E S E T S E N S O R NOTE: Since not all local codes allow the mounting of a disconnect on the unit, please confirm compliance with local code before mounting a disconnect on the unit. Electrical wiring must be sized properly to carry the load.
PAGE 14
035-16682-000-E-0303 GAS HEATING GAS CONNECTION On VAV units with gas fired furnace, ALL INDIVIDUAL ROOM DAMPER BOXES MUST BE CONTROLLED FULL OPEN DURING HEATING OPERATION TO ENSURE PROPER AIRFLOW OVER THE FURNACE. A control contact between D1 and D2 on TB3 is provided for the damper box interlock. This contact is normally open, thus is closed during heating operation. The gas supply line should be routed within the space and penetrate the roof at the gas inlet connection of the unit. Refer to Fig.
PAGE 15
035-16682-000-E-0303 soap solution or other material suitable for the purpose. NEVER USE A FLAME 6. O U T E R D O O R P A N E L G A S H E A T S E C T IO N The furnace and its individual manual shut-off valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 0.5 psig. Disconnect gas piping from unit when leak testing at pressures greater than 0.5 psig. Pressures greater than 0.
PAGE 16
035-16682-000-E-0303 3. Place the flue extension (Figure 9) on the flue duct of each furnace section and attach with screws provided. 5. Place the wind shield over the louvers on the right side of the burner access door and attach with screws provided. 4. Place the flue in position with the diverter angles facing up toward the top of the unit and attach with screws provided. 6. Refer to the Gas Furnace Operation Instructions in the Start-up Section of this manual for further information.
PAGE 17
035-16682-000-E-0303 There are no provisions in the coil or control sequence to prevent freezing of condensate. The control valve, piping and field installed wiring connections are particularly vulnerable because they are installed in the vestibule outside of the conditioned air stream. The installing party will be responsible for properly insulating and installing power and control wiring, to the actuator and piping. DO NOT use tin based solder.
PAGE 18
035-16682-000-E-0303 NOTE: The steam control valve, power and control wiring to the actuator of the valve is the responsibility of the installing party. DO NOT use tin based solder. Brazing with tin based solder could cause equipment damage or possible injury to tenets of the structure that is being conditioned. All piping and control valves, and wiring that is field installed must be properly insulated and conform to all local and national codes.
PAGE 19
035-16682-000-E-0303 24 VAC HOT 24 VAC COM ENTHALPY CHANGEOVER SETPOINT TR HOT C B A D BR 5 MINIMUM POSITION 2-10V OUT 1 2 3 4 T T1 OPEN P1 COOLING MINIMUM DAMPER POSITION SETTING LED LIGHTS WHEN OUTDOOR AIR IS SUITABLE FOR FREE COOLING Location of enthalpy setpoint potentiometer, minimum position potentiometer and LED.
PAGE 20
035-16682-000-E-0303 95 85 90 (29) (32) (35) 110 (43) 46 100 105 (38) (41) 44 CONTROL CONTROL POINT CURVE (APPROX. DEG.
PAGE 21
035-16682-000-E-0303 TABLE 9: GENERAL PHYSICAL DATA UNIT SIZE Unit EER 25 TON 30 TON 10.0 9.5 Compressor Data Number/Size 2 x 13 Ton 3 x 10 Ton Type Scroll Scroll Unit Capacity Steps 50%, 100% 33%, 67%, 100% Indoor Fan and Drive Number / Type 1 / FC 1 / FC Diameter x Width (inches) 22 x20 22 x 20 HP Range 7.5 - 20 10 - 25 CFM Range (full load) 6,000 - 12,500 6,000 - 15,000 ESP Range 0.2” - 4.0” 0.2" - 4.0” Exhaust Fan Number/Size/Type 1/FC 2/FC HP Range (single motor) 5 - 10 7.
PAGE 22
035-16682-000-E-0303 TABLE 10: REFIGERANT CHARGE UNIT (TONS) MODEL TYPE FACTORY/ FIELD CHARGED CHARGE SYS #1 SYS #2 SYS #3 SYS #4 25 wo/HGBP R22 Factory 27 lb. / 0 oz. 26lb / 0oz - - 30 wo/HGBP R22 Factory 13 lb. / 4 oz. 13 lb. / 8 oz. 13 lb. / 8 oz. - 25 w/HGBP R22 Factory 27 lb. / 8 oz. 26 lb. / 0oz - - 30 w/HGBP R22 Factory 14 lb. / 0 oz. 13 lb. / 8 oz. 13 lb. / 8 oz. - 40 wo/HGBP R22 Factory 15 lb. / 5 oz. 15 lb. / 4 oz. 15 lb. / 5 oz. 15 lb. / 15 oz.
PAGE 23
035-16682-000-E-0303 TABLE 12: ELECTRICAL DATA BASIC UNIT - 30 TON COMPRESSORS COND. FAN MOTOR SUPPLY AIR MOTOR BASIC UNIT VOLTAGE QTY. 208-3-60 230-3-60 460-3-60 575-3-60 3 RLA 38.5 3 38.5 3 18.8 3 15.7 LRA 228 255 127 100 QTY. 3 3 3 3 FLA 4.0 ea. 3.6 ea. 1.8 ea. 1.4 ea. TOTAL 12.0 10.8 5.4 4.2 HP FLA MCA MAX. OVERCURRENT PROTECTION DEVICE 10 30.8 168 200 15 46.2 185 225 20 59.4 202 250 25 74.
PAGE 24
035-16682-000-E-0303 TABLE 14: ELECTRICAL DATA BASIC UNIT WITH ELECTRIC HEAT - 25 TON ELECTRIC HEAT VOLTAGE NOMINAL KW 40 SUPPLY AIR MOTOR APPLIED KW 30 208-3-60 80 40 60.1 40 230-3-60 80 40 460-3-60 80 108 40 575-3-60 80 108 24 80 40 80 108 40 80 108 HP FLA BASIC UNIT W/ ELECTRIC HEAT MCA MAX OVERCURRENT PROTECTION DEVICE 7.5 24.2 157 200 10 30.8 164 200 15 46.2 180 225 20 59.4 196 250 7.5 24.2 197 225 10 30.8 205 225 15 46.2 225 250 20 59.
PAGE 25
035-16682-000-E-0303 TABLE 15: ELECTRICAL DATA BASIC UNIT WITH ELECTRIC HEAT - 30 TON ELECTRIC HEAT VOLTAGE NOMINAL KW 40 APPLIED KW 30 208-3-60 80 40 60.1 40 230-3-60 80 40 460-3-60 80 108 40 575-3-60 80 108 Unitary Products Group 80 40 80 108 40 80 108 SUPPLY AIR MOTOR BASIC UNIT WITH ELECTRIC HEAT HP FLA MCA MAX OVERCURRENT PROTECTION DEVICE 10 30.8 210 225 15 46.2 228 250 20 59.4 244 300 25 74.8 264 300 10 30.8 210 225 15 46.2 228 250 20 59.
PAGE 26
035-16682-000-E-0303 TABLE 16: ELECTRICAL DATA BASIC UNIT WITH ELECTRIC HEAT - 40 TON SUPPLY AIR MOTOR ELECTRIC HEAT VOLTAGE NOMINAL KW 40 APPLIED KW 30 208-3-60 80 40 60.1 40 230-3-60 80 40 460-3-60 80 108 40 575-3-60 80 108 26 80 40 80 108 40 80 108 BASIC UNIT WITH ELECTRIC HEAT HP FLA MCA MAX. OVERCURRENT PROTECTION DEVICE 10 30.8 210 225 15 46.2 228 250 20 59.4 244 300 25 74.8 264 300 10 30.8 210 225 15 46.2 228 250 20 59.4 244 300 25 74.
PAGE 27
035-16682-000-E-0303 TABLE 17: ELECTRICAL DATA BASIC UNIT WITH POWER EXHAUST - 25 TON VOLTAGE SUPPLY AIR MOTOR HP 7.5 10 208-3-60 15 20 7.5 10 230-3-60 15 20 7.5 10 460-3-60 15 20 7.5 10 575-3-60 15 20 Unitary Products Group EXHAUST FAN MOTOR BASIC UNIT W/ EXHAUST FAN HP FLA MCA MAX OVERCURRENT PROTECTION DEVICE 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 16.7 24.2 30.8 16.7 24.2 30.
PAGE 28
035-16682-000-E-0303 TABLE 18: ELECTRICAL DATA BASIC UNIT WITH POWER EXHAUST - 30 TON SUPPLY AIR MOTOR VOLTAGE HP 10 15 208-3-60 20 25 10 15 230-3-60 20 25 10 15 460-3-60 20 25 10 15 575-3-60 20 25 28 EXHAUST FAN MOTOR BASIC UNIT WITH EXHAUST FAN HP FLA MCA MAX. OVERCURRENT PROTECTION DEVICE 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 24.2 30.8 46.2 24.2 30.8 46.2 24.
PAGE 29
035-16682-000-E-0303 TABLE 19: ELECTRICAL DATA BASIC UNIT WITH POWER EXHAUST - 40 TON SUPPLY AIR MOTOR VOLTAGE HP 10 15 208-3-60 20 25 10 15 230-3-60 20 25 10 15 460-3-60 20 25 10 15 575-3-60 20 25 Unitary Products Group EXHAUST FAN MOTOR BASIC UNIT WITH EXHAUST FAN HP FLA MCA MAX. OVERCURRENT PROTECTION DEVICE (MOPD) 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 24.2 30.
PAGE 30
035-16682-000-E-0303 TABLE 20: ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST & ELECTRIC HEAT - 25 TON ELECTRIC HEAT VOLTAGE NOMINAL KW APPLIED KW SUPPLY AIR MOTOR HP 7.5 10 40 30 15 20 208-3-60 7.5 10 80 60.1 15 20 7.5 10 40 40 15 20 230-3-60 7.5 10 80 80 15 20 30 EXHAUST FAN MOTOR BASIC UNIT W/ EXHAUST FAN HP FLA MCA MAX. OVERCURRENT PROTECTION DEVICE 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.
PAGE 31
035-16682-000-E-0303 TABLE 20: ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST & ELECTRIC HEAT - 25 TON (Continued) ELECTRIC HEAT VOLTAGE NOMINAL KW APPLIED KW SUPPLY AIR MOTOR HP 7.5 10 40 30 15 20 7.5 10 460-3-60 80 80 15 20 7.5 10 108 108 15 20 Unitary Products Group EXHAUST FAN MOTOR BASIC UNIT W/ EXHAUST FAN HP FLA MCA MAX. OVERCURRENT PROTECTION DEVICE 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 7.6 11.0 14.0 7.6 11.
PAGE 32
035-16682-000-E-0303 TABLE 20: ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST & ELECTRIC HEAT - 25 TON (Continued) ELECTRIC HEAT VOLTAGE NOMINAL KW APPLIED KW SUPPLY AIR MOTOR HP 7.5 10 40 40 15 20 7.5 10 575-3-60 80 80 15 20 7.5 10 108 108 15 20 32 EXHAUST FAN MOTOR BASIC UNIT W/ EXHAUST FAN HP FLA MCA MAX. OVERCURRENT PROTECTION DEVICE 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 5 7.5 10 6.1 9.0 11.0 6.1 9.0 11.0 6.1 9.0 11.0 6.
PAGE 33
035-16682-000-E-0303 TABLE 21: ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST & ELECTRIC HEAT - 30 TON ELECTRIC HEAT VOLTAGE NOMINAL KW APPLIED KW SUPPLY AIR MOTOR HP 10 15 40 30 20 25 208-3-60 10 15 80 60.1 20 25 10 15 40 40 20 25 230-3-60 10 15 80 80 20 25 Unitary Products Group EXHAUST FAN BASIC UNIT WITH EXHAUST FAN AND ELECTRIC HEAT HP FLA MCA MAX. OVERCURRENT PROTECTION 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.
PAGE 34
035-16682-000-E-0303 TABLE 21: ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST & ELECTRIC HEAT - 30 TON (Continued) ELECTRIC HEAT VOLTAGE NOMINAL KW APPLIED KW SUPPLY AIR MOTOR HP 10 15 40 40 20 25 10 15 460-3-60 80 80 20 25 10 15 108 108 20 25 34 EXHAUST FAN BASIC UNIT WITH EXHAUST FAN AND ELECTRIC HEAT HP FLA MCA MAX. OVERCURRENT PROTECTION 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.
PAGE 35
035-16682-000-E-0303 TABLE 21: ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST & ELECTRIC HEAT - 30 TON (Continued) ELECTRIC HEAT VOLTAGE NOMINAL KW APPLIED KW SUPPLY AIR MOTOR HP 10 15 40 40 20 25 10 15 575-3-60 80 80 20 25 10 15 108 108 20 25 Unitary Products Group EXHAUST FAN BASIC UNIT WITH EXHAUST FAN AND ELECTRIC HEAT HP FLA MCA MAX. OVERCURRENT PROTECTION 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.
PAGE 36
035-16682-000-E-0303 TABLE 22: ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST & ELECTRIC HEAT - 40 TON ELECTRIC HEAT VOLTAGE NOMINAL KW APPLIED KW SUPPLY AIR MOTOR HP 10 15 40 30 20 25 208-3-60 10 15 80 60.1 20 25 10 15 40 40 20 25 230-3-60 10 15 80 80 20 25 36 EXHAUST FAN BASIC UNIT WITH EXHAUST FAN AND ELECTRIC HEAT HP FLA MCA MAX. OVERCURRENT PROTECTION 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.
PAGE 37
035-16682-000-E-0303 TABLE 22: ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST & ELECTRIC HEAT - 40 TON (Continued) ELECTRIC HEAT VOLTAGE NOMINAL KW APPLIED KW SUPPLY AIR MOTOR HP 10 15 40 40 20 25 10 15 460-3-60 80 80 20 25 10 15 108 108 20 25 Unitary Products Group EXHAUST FAN BASIC UNIT WITH EXHAUST FAN AND ELECTRIC HEAT HP FLA MCA MAX. OVERCURRENT PROTECTION 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.
PAGE 38
035-16682-000-E-0303 TABLE 22: ELECTRICAL DATA BASIC UNIT W/ POWER EXHAUST & ELECTRIC HEAT - 40 TON (Continued) ELECTRIC HEAT VOLTAGE NOMINAL KW APPLIED KW SUPPLY AIR MOTOR HP 10 15 40 40 20 25 10 15 575-3-60 80 80 20 25 10 15 108 108 20 25 38 EXHAUST FAN BASIC UNIT WITH EXHAUST FAN AND ELECTRIC HEAT HP FLA MCA MAX. OVERCURRENT PROTECTION 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.5 10 15 7.
PAGE 39
035-16682-000-E-0303 RETURN AIR SUPPLY AIR REAR RIGHT SIDE SEE DETAIL SEE DETAIL C B 64" 100.10" FRONT 92" LEFT SIDE 128.50" RIGHT SIDE REAR 4.5" 80.93" 4.5" LEFT SIDE SEE DETAIL A OPEN 26" 71.61" 4.5" 12" MIN 15.89" 6.46" 38.59" 83" 3.625" 88.7" 127.5" CL FRONT 240" CL 1-1/4" FPT 4-5/8" 1-5/8" FPT FLANGE D FITTING 4-5/8" 3-5/8" BASE RAIL 1-1/2" FPT DETAIL A (DRAIN CONNECTION) 3-1/16" BASE RAIL 6.
PAGE 40
035-16682-000-E-0303 NOTE: FACTORY INSTALLED POWER EXHAUST CANNOT BE ORDERED WITH END RETURN. RETURN AIR SUPPLY AIR REAR SEE DETAIL B 7-7/8" 64" RIGHT SIDE SEE DETAIL C 75.6" 24.9" 76-3/8 LEFT SIDE 92" 6.25" REAR 80.93" FRONT 4.5" SEE DETAIL A 100.10" 128.50" 8.15" RIGHT SIDE OPEN 26" 71.61" 3.625" 6.46" 15.89" FRONT LEFT SIDE 12" MIN CL 88.7" 240" 1-1/4" FPT 4-5/8" 3-5/8" 4-5/8" BASE RAIL 1-1/2" FPT DETAIL A (DRAIN CONNECTION) 3-1/16" 6.
PAGE 41
035-16682-000-E-0303 FRONT SUPPLY: FOR COOLING ONLY APPLICATIONS REAR SUPPLY: FOR COOLING ONLY OR GAS HEAT APPLICATIONS FRONT REAR RETURN AIR SUPPLY AIR REAR RIGHT SIDE 26" 55" 64" 75.6" 8.15" SEE DETAIL B SEE FRONT DETAIL C 92" LEFT SIDE REAR 80.93" 4.5" LEFT SIDE RIGHT SIDE OPEN SEE DETAIL A 83" 100.10" 128.50" 38.59" 3.625" 12" MIN 6.46" FRONT 240" 4.5" 1-1/4" FPT 4-5/8" 3-5/8" 4-5/8" BASE RAIL 1-1/2" FPT DETAIL A (DRAIN CONNECTION) BASE RAIL 3-1/16" 6.
PAGE 42
035-16682-000-E-0303 FRONT SUPPLY: FOR COOLING ONLY APPLICATIONS REAR SUPPLY: FOR COOLING ONLY OR GAS HEAT APPLICATIONS 26" 55" REAR RETURN AIR SUPPLY AIR REAR RIGHT SIDE 26" 55" 7-7/8" 64" 75.6" 24.9" 76-3/8 92" 6.25" LEFT SIDE REAR 80.93" SEE DETAIL A 100.10" 128.50" 8.15" SEE DETAIL SEE FRONT B DETAIL C RIGHT SIDE OPEN 3.625" 12" MIN 6.46" FRONT LEFT SIDE 240" 1-1/4" FPT 4-5/8" 3-5/8" 4-5/8" BASE RAIL 1-1/2" FPT DETAIL A (DRAIN CONNECTION) 3-1/16" 6.
PAGE 43
035-16682-000-E-0303 DRILL & BOLT THROUGH UNIT SHEET METAL (4 PLACES) 31" MAXIMUM 6-1/2" MINIMUM 34"* 47" MAXIMUM DOOR SWING OF HEAT SECTION DOOR WHEN OPEN UNISTRUT TM 1-5/8" W x 7/8" H OR EQUIVALENT *34 INCHES IS THE MINIMUM LENGTH REQUIRED TO MOUNT TO THE FOUR POINTS SHOWN. THE RAILS CAN BE EXTENDED TO MOUNT A TALLER DISCONNECT SWITCH, BUT THESE FOUR POINTS SHOULD BE USED TO MOUNTTHE RAILS TO THE UNIT.
PAGE 44
035-16682-000-E-0303 2 3 5 .0 0 9 5 .0 9 3 8 .5 9 7 1 .6 1 R E T U R N A IR O P E N IN G 8 3 .0 0 2 6 .0 0 S U P P L Y A IR O P E N IN G 8 7 .0 0 1 1 .3 9 4 .0 0 2 .0 0 1 4 .
PAGE 45
035-16682-000-E-0303 2 3 5 .0 0 2 6 .0 0 2 .0 0 8 3 .0 0 3 8 .5 9 7 3 .3 0 2 3 .7 6 7 1 .6 1 R E T U R N A IR O P E N IN G 2 3 .7 7 3 .0 0 2 3 .7 7 2 .0 0 S U P P L Y A IR O P E N IN G 8 7 .0 0 1 1 .3 9 2 .0 0 1 1 7 .5 0 1 1 .0 0 1 4 .0 0 A A B A S E R A IL (Y O R K U N IT ) C U R B G A S K E T B A S E R A IL C R O S S -S E C T IO N 1 .2 5 " 1 .7 5 " 2 " X 4 " N A IL E R 4 .6 3 " (1 4 .0 0 ) 1 4 G A . G A L V S T E E L R O O F C U R B 2 .5 0 " 1 .5 0 " 2 .
PAGE 46
035-16682-000-E-0303 TABLE 23: FAN PERFORMANCE - 25 TON1 2 AVAILABLE EXTERNAL STATIC PRESSURE (IWG) 0.2 AIRFLOW CFM 0.4 BHP3 RPM 0.6 BHP3 RPM 0.8 BHP3 RPM 1.0 BHP3 RPM BHP3 RPM 4000 - - 342 0.59 404 0.82 456 1.08 506 1.35 5000 306 0.62 362 0.83 415 1.08 465 1.36 512 1.66 6000 337 0.93 387 1.17 433 1.43 478 1.72 521 2.04 7000 370 1.34 415 1.60 456 1.88 497 2.20 535 2.54 8000 408 1.88 446 2.17 484 2.49 520 2.80 555 3.15 9000 444 2.
PAGE 47
035-16682-000-E-0303 TABLE 23: FAN PERFORMANCE - 25 TON1 2 (Continued) AVAILABLE EXTERNAL STATIC PRESSURE (IWG) 3.2 AIRFLOW CFM 3.4 3.6 3.8 4.0 RPM BHP3 RPM BHP3 RPM BHP3 RPM BHP3 RPM BHP3 4000 864 4.90 890 5.26 913 5.64 935 6.01 957 6.39 5000 878 5.69 904 6.10 927 6.51 950 6.92 973 7.33 6000 885 6.47 911 6.91 935 7.36 959 7.82 983 8.29 7000 889 7.25 914 7.74 939 8.24 964 8.75 988 9.25 8000 892 8.13 918 8.66 942 9.18 967 9.71 992 10.
PAGE 48
035-16682-000-E-0303 25 Ton Forward Curve 10.0 9.5 9.0 8.5 8.0 7.5 7.0 1200 RPM Total Static Pressure (IWG) 6.5 20 6.0 1100 RPM 5.5 15 E 5.0 D 1000 RPM 4.5 10 4.0 C 900 RPM 7.5 3.5 B 800 RPM 3.0 A 700 RPM 2.5 2.0 600 RPM 1.5 500 RPM 1.0 400 RPM 0.5 300 RPM 0.
PAGE 49
035-16682-000-E-0303 TABLE 24: FAN PERFORMANCE -30 TON 1 2 Available External Static Pressure (IWG) 0.2 AIRFLOW (CFM) 0.4 0.6 0.8 1.0 RPM BHP3 RPM BHP3 RPM BHP3 RPM BHP3 RPM BHP3 6000 321 0.9 373 1.1 422 1.5 469 1.8 513 2.1 7000 357 1.3 404 1.6 447 1.9 490 2.2 529 2.6 8000 398 1.8 437 2.1 477 2.5 515 2.9 551 3.3 9000 436 2.5 473 2.8 509 3.2 543 3.6 577 4.0 10000 477 3.2 511 3.7 543 4.1 575 4.5 606 5.0 11000 519 4.2 549 4.7 579 5.
PAGE 50
035-16682-000-E-0303 TABLE 24: FAN PERFORMANCE -30 TON 1 2 (Continued) Available External Static Pressure (IWG) 3.2 AIRFLOW (CFM) 50 3.4 3.6 BHP3 3.8 RPM BHP3 RPM 6000 877 6.4 904 6.8 928 7.3 951 7.7 975 8.2 7000 885 7.3 911 7.8 935 8.3 959 8.8 984 9.2 8000 892 8.4 917 8.9 942 9.4 966 9.9 991 10.4 9000 900 9.5 925 10.1 949 10.6 974 11.2 998 11.8 10000 910 10.9 934 11.5 958 12.1 982 12.7 1006 13.3 11000 923 12.4 946 13.0 970 13.
PAGE 51
035-16682-000-E-0303 FIGURE 24 - FAN PERFORMANCE - 30 TON Unitary Products Group 51
PAGE 52
035-16682-000-E-0303 TABLE 25: FAN PERFORMANCE - 40 TON1 2 Available External Static Pressure (IWG) 0.2 AIRFLOW (CFM) 0.4 3 0.6 3 RPM 0.8 3 BHP3 RPM BHP RPM BHP 8000 304 1.3 348 1.7 393 2.1 431 2.5 469 2.9 9000 329 1.8 371 2.2 411 2.6 448 3.0 484 3.5 BHP RPM 1.0 3 BHP RPM 10000 356 2.3 396 2.7 432 3.2 467 3.7 502 4.2 11000 385 2.9 421 3.4 454 3.9 488 4.5 519 5.0 12000 414 3.7 446 4.3 479 4.8 510 5.4 539 5.9 13000 442 4.6 473 5.
PAGE 53
035-16682-000-E-0303 TABLE 25: FAN PERFORMANCE - 40 TON1 2 (Continued) Available External Static Pressure (IWG) 3.2 AIRFLOW (CFM) 3.4 3 3.6 3 3.8 3 RPM BHP RPM BHP 8000 774 8.3 797 8.8 817 9.4 837 9000 784 9.3 806 9.8 826 10.4 846 10000 794 10.3 815 11.0 836 11.6 856 RPM BHP RPM 4.0 RPM BHP3 9.9 857 10.5 11.0 866 11.6 12.3 876 12.9 BHP 3 11000 804 11.6 824 12.2 845 12.9 865 13.6 886 14.2 12000 814 12.9 835 13.6 855 14.3 876 15.0 896 15.
PAGE 54
035-16682-000-E-0303 FIGURE 25 - FAN PERFORMANCE - 40 TON 54 Unitary Products Group
PAGE 55
035-16682-000-E-0303 TABLE 26: COMPONENT STATIC RESISTANCE1 2 COMPONENT COIL LOSSES CFM 6,000 8,000 10,000 12,000 14,000 16,000 18,000 Std. 25 Ton, Dry -0.06 -0.08 -0.10 -0.13 - - - Std. 25 Ton, Wet Baseline Baseline Baseline Baseline Baseline Baseline Baseline Std. 30 Ton, Dry -0.045 -0.075 -0.112 -0.157 -0.207 -0.264 -0.326 Std. 30 Ton, Wet Baseline Baseline Baseline Baseline Baseline Baseline Baseline Hi Cap 30 Ton, Dry -0.019 -0.035 -0.052 -0.073 -0.098 -0.
PAGE 56
035-16682-000-E-0303 TABLE 27: SUPPLY FAN MOTOR AND DRIVE DATA Motor Model Blower RPM Range Motor Pulley Blower Pulley Belts HP Fram e Size Motor Efficiency (Std. Motor) Motor Efficienc y (Ultra Hi Eff Opt) Pitch Dia (Inches) Bore (Inches) Pitch Dia (Inches) Bore (Inches) Designatio n Qty 567 7.5 213T 88.5 91.7 4.5 1-3/8 13.9 2-3/16 BX56 2 692 10 215T 89.5 91 5.5 1-3/8 13.9 2-3/16 BX56 2 793 15 254T 91 91.7 6.3 1-5/8 13.
PAGE 57
035-16682-000-E-0303 TABLE 29: POWER EXHAUST - ONE FORWARD CURVED FAN 25 TON1 AVAILABLE EXTERNAL STATIC PRESSURE (IWG) 0.2 AIRFLOW CFM 0.4 0.6 0.8 1.0 RPM BHP2 RPM BHP2 RPM BHP2 RPM BHP2 RPM BHP2 2000 --- --- --- --- 524 0.32 609 0.42 685 0.54 3000 --- --- 450 0.41 531 0.51 605 0.64 672 0.77 4000 442 0.63 496 0.74 562 0.87 626 1.00 687 1.16 5000 524 1.15 566 1.29 609 1.43 663 1.58 717 1.74 6000 612 1.84 646 2.08 679 2.25 717 2.43 762 2.
PAGE 58
035-16682-000-E-0303 Power Exhaust 25 Ton 8.0 7.5 7.0 6.5 1600 6.0 Total Static Pressure (IWG) 5.5 1500 10 BHP 5.0 7.5 BHP 1400 4.5 5 BHP 1300 4.0 1200 3.5 1100 3.0 1000 2.5 900 2.0 800 700 1.5 600 1.0 500 0.5 400 300 0.0 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.
PAGE 59
035-16682-000-E-0303 TABLE 30: POWER EXHAUST - TWO FORWARD CURVED FANS - 30 & 40 TON1 Available External Static Pressure (IWG) 0.2 AIRFLOW (CFM) 0.4 .06 0.9 716 1.1 652 1.2 722 1.4 1.3 670 1.6 735 1.9 633 1.7 697 2.0 757 2.4 2.0 670 2.3 729 2.6 784 3.0 654 2.7 711 3.0 765 3.3 817 3.7 3.1 703 3.5 754 3.8 805 4.2 853 4.6 705 4.1 753 4.5 801 4.9 847 5.3 893 5.7 12000 761 5.2 805 5.6 849 6.0 893 6.5 934 6.9 13000 817 6.6 858 7.0 899 7.
PAGE 60
035-16682-000-E-0303 FIGURE 27 - POWER EXHAUST - TWO FORWARD CURVED FANS - 30 & 40 TONS 60 Unitary Products Group
PAGE 61
035-16682-000-E-0303 START-UP COMPRESSOR ROTATION Check for proper compressor rotation (See page 79 for symptoms of reverse compressor operations). Millennium units are properly phased at the factory. If the blower, condenser fan, or compressor, rotate in the wrong direction at start-up, the electrical connection to the unit is misphased. Change the incoming line connection phasing to obtain proper rotation.
PAGE 62
035-16682-000-E-0303 TABLE 31: BELT ADJUSTMENT FAN MOTOR HORSE POWER 5 7.5 30 TON FORWARD CURVED SUPPLY FAN 10 15 20 25 SIZE: 22 X 20 Belt Deflection Force (lbs) new belts - - 10.5 12.6 15.2 22.1 Belt Deflection Force (lbs) old belts - - 7.1 8.5 10.2 14.8 40 TON FORWARD CURVED SUPPLY FAN SIZE: 25 X 20 Belt Deflection Force (lbs) new belts - - 10.5 12.6 15.2 15.2 Belt Deflection Force (lbs) old belts - - 7.1 8.5 10.2 10.
PAGE 63
035-16682-000-E-0303 SUPPLY AIR DRIVE ADJUSTMENT . TABLE 32: BLOWER SPEED RATE OF CHANGE CHANGE IN CFM TSP BHP AND MOTOR AMPS .90 .90 .81 .73 .93 .93 .86 .79 .95 .95 .90 .86 .98 .98 .95 .93 1.00 1.00 1.00 1.00 1.03 1.03 1.05 1.08 1.05 1.05 1.10 1.16 1.08 1.08 1.16 1.24 1.10 1.10 1.21 1.33 1.13 1.13 1.27 1.42 1.15 1.15 1.32 1.52 1.18 1.18 1.38 1.62 1.20 1.20 1.44 1.
PAGE 64
035-16682-000-E-0303 VARIABLE AIR VOLUME (VAV) OR VARIABLE FREQUENCY DRIVE (VFD) W7100 DISCHARGE AIR CONTROLLER: setpoint, reset and control band adjustment. NOTE: As shipped from the factory the reset adjustment has no effect. This adjustment is applicable ONLY when one of the reset kits is field installed. OPTIONAL ECONOMIZER: Economizer setpoint adjustment and minimum position adjustment (See page 18 Economizer Set Point Adjustment).
PAGE 65
035-16682-000-E-0303 TABLE 34: 25 TON DRIVE ADJUSTMENT 7.5 HP Motor & 567 RPM Drive 10 HP Motor & 692 RPM Drive 15 HP Motor & 793 RPM Drive 20 HP Motor & 814 RPM Drive %RPM & CFM Req’d PD Browning 2b5v_ _ %RPM & CFM Req’d PD Browning 2b5v_ _ %RPM & CFM Req’d PD Browning 2b5v_ _ %RPM & CFM Req’d PD Browning 2b5v_ _ - - - 81 4.2 42 83 5 50 85 5.8 58 - - - 85 4.4 44 87 5.2 52 88 6 60 - - - 88 4.6 46 90 5.4 54 91 6.2 62 - - - 92 4.8 48 95 5.
PAGE 66
035-16682-000-E-0303 TABLE 36: 40 TON DRIVE ADJUSTMENT 10 HP Motor & 567 RPM Drive 15 HP Motor & 652 RPM Drive 20 HP Motor & 728 RPM Drive 25 HP Motor & 779 RPM Drive %RPM & CFM Req’d PD Browning 2B5V_ _ % RPM & CFM Req’d PD Browning 2B5V_ _ %RPM & CFM Req’d PD Browning 2B5V_ _ %RPM & CFM Req’d PD Browning 2B5V_ _ - - - - - - 82 4.7 46 84 5.1 50 - - - - - - 86 4.9 48 87 5.3 52 - - - 88 4.5 44 89 5.1 50 90 5.5 54 - - - 92 4.7 46 93 5.3 52 83 5.
PAGE 67
035-16682-000-E-0303 TABLE 38: DRIVE ADJUSTMENT FOR POWER EXHAUST - 30 & 40 TON 7.5 HP Motor & 852 RPM Drive % RPM & CFM 10 HP Motor & 976 RPM Drive 15 HP Motor & 1069 RPM Drive REQ’D PD (in) Browning 2B5V_ _ % RPM & CFM REQ’D PD (in) Browning 2B5V_ _ % RPM & CFM REQ’D PD (in) Browning 2B5V_ _ 96.4 5.3 52 93.7 5.9 58 94.2 6.5 64 100.0 (Std.) 5.5 54 96.8 6.1 60 97.1 6.7 66 103.6 5.7 56 100.0 (Std.) 6.3 62 100.0 (Std.) 6.9 68 107.3 5.9 58 103.2 6.5 64 102.9 7.
PAGE 68
035-16682-000-E-0303 Manual Shutoff Regulator Cap After the temperature rise has been determined, the CFM can be calculated as follows: Btuh × 0.8 CFM= -------------------------------------------------------------------------1.08 × F Degrees Temp Rise After about 20 minutes of operation, determine the furnace temperature rise. Take readings of both the return air and the heated air in the ducts (about six feet from the furnace) where they will not be affected by radiant heat.
PAGE 69
035-16682-000-E-0303 SEQUENCE OF OPERATION H E A T E X C H A N G E R T U B E G A S S U P P L Y P IP E CONSTANT VOLUME UNIT OVERVIEW B U R N E R F L A M E (B L U E O N L Y ) B U R N E R B U R N E R B R A C K E T IG N IT O R FIGURE 30 - TYPICAL FLAME APPEARANCE Example: By actual measurement, it takes 7 seconds for the hand on the one cubic foot dial to make a revolution with just a 570,000 Btuh furnace running.
PAGE 70
035-16682-000-E-0303 THERMOSTAT SEQUENCE power is applied to the overload relay connected to starter 5M (Supply Fan Motor Starter). If the overload relay has not tripped, starter 5M closes and the supply fan motor is engaged. If the supply fan operates correctly (proper rotation) the pressure difference between the heating section and the supply fan section increases and APS closes to enable heating operation, power the auxiliary economizer relay, and the cooling lockout control.
PAGE 71
035-16682-000-E-0303 PS1 (draft fan air proving switch) and LS1 (limit switch). Switch PS1 closes to prove combustion airflow and powers normally closed switch LS1 which opens only with excessive heat exchanger temperature. When LS1 and PS1 are closed, IC1 will attempt ignition. IC1 provides direct spark ignition with flame verification and controls the GV1 gas valve through manual reset switch RS1 (rollout switch).
PAGE 72
035-16682-000-E-0303 stage heat. As the call heat (W1) has been satisfied, W2 will be de-energized and the APS will open disconnecting power to the first stage of electric heat. All electric heat modules have an auto-reset primary limit and non-restartable back-up limits. Dirty filters, broken belts, fan motor burn-out or running this unit below 6,000 CFM will cause the limit to trip on the auto-reset primary limit. In addition to the primary limit, back-up limits may trip under these conditions.
PAGE 73
035-16682-000-E-0303 Damper). As long as the building pressure floats within the null range, neither contact is closed and ACT2 holds the damper in position. When ACT2 opens more than 5 an end switch (ACT2-1) closes to power the 10M starter and engage the power exhaust fan motor. When the power exhaust is disabled, ACT2's spring return closes the exhaust dampers and 10M opens to shut down the exhaust fans. 12.
PAGE 74
035-16682-000-E-0303 There are three sub-modes available in the Night Mode: Off, Set-back, and Set-up. When the field supplied contact is open for night mode operation, the unit is always in the NIGHT OFF MODE unless a field connected space thermostat calls for set-back or set-up operation. UNIT CONTROLS 1. In the NIGHT OFF MODE, the supply fan motor and optional exhaust fan motor are disengaged. The optional inlet guide vanes and optional exhaust dampers close.
PAGE 75
035-16682-000-E-0303 CM-VAV disengages a stage of cooling each time the discharge air falls more than 1°F below the discharge setpoint minus 1/2 the control band setpoint. When the supply air reset accessory is installed, the stage ON/OFF control points move upwards as the setpoint is reset by either the outside air temperature or the space temperature.
PAGE 76
035-16682-000-E-0303 thus forcing the inlet guide vane dampers to fully open. Contact FR2 makes contact between terminals D1 and D2 to signal the remote VAV boxes to open. Contacts HR1-2 opens to disable the CM-VAV and ELM (optional Economizer Logic Module), so cooling is disabled and the optional economizer outside air dampers are closed. This operation is maintained until the space temperature rises above the NSB STAT heating setpoint or DAY MODE is engaged.
PAGE 77
035-16682-000-E-0303 the duct pressure floats within the null range, neither contact is closed and ACT3 holds the inlet guide vanes in position. When a call for heating is signaled by relay FR1, ACT3 - terminal #3 is powered and the inlet guide vanes fully open, regardless of the duct pressure or the status of the ACT3 - terminal #2 input (an input at terminal #3 always overrides any input at terminal #2).
PAGE 78
035-16682-000-E-0303 16. Power Exhaust Option with Modulating Dampers: The power exhaust controls are powered through relay MR (supply air motor relay) with a call for the supply fan. Once powered, null pressure switch SSP1 (Switch, Static Pressure - Building) provides floating point control of the exhaust dampers.
PAGE 79
035-16682-000-E-0303 The proportional integral sequence controller (PI controller), provides 13.9 VDC power from terminal “VDC” to each pressure transducer. The transducer has an output signal of 0-10 VDC, which connects to the PI controller at terminal “SN”. The PI controller regulates the output signal to the variable frequency drive based on a fixed setpoint of 240 PSI. The output signal from the PI controller is 4-20ma at the “I” terminal.
PAGE 80
035-16682-000-E-0303 MOTORS TABLE 44: STEAM COIL (1 ROW, 40 TON)1 INDOOR BLOWER MOTORS Capacity (MBH) at Steam Pressure (PSI) All indoor blower motors are non-inherently protected three phase motors. Overcurrent protection is provided by a manual reset starter/overload relay and short circuit protection is provided by fuses. POWER EXHAUST OR RETURN AIR FAN MOTORS All motors are non-inherently protected three phase motors.
PAGE 81
035-16682-000-E-0303 TABLE 47: HOT WATER COIL (1 ROW 25 & 30 TON)1 GPM 10 20 30 40 1. Capacity (MBH) at Entering Water Temperature CFM 140 °F 160 °F 180 °F 200 °F 6000 91.4 115.3 139.3 163.6 8000 102 128.8 155.8 182.9 10000 110.4 139.5 168.8 198.4 12000 117.3 148.4 179.6 15000 125.9 159.2 6000 103 8000 TABLE 48: HOT WATER COIL (1 ROW, 40 TON)1 GPM CFM Capacity (MBH) at Entering Water Temperature 140 °F 160 °F 180 °F 200 °F 8000 102 128.8 155.8 182.
PAGE 82
035-16682-000-E-0303 TABLE 49: WATER PRESSURE DROP (1 ROW, 25 & 30 TON) TABLE 52: WATER PRESSURE DROP (2 ROW, 25 & 30 TON) GPM 10 20 30 40 GPM 20 40 60 80 Water Pressure Drop 0.9 3.0 6.0 10.0 Water Pressure Drop 0.9 3.0 6.0 10.0 TABLE 50: WATER PRESSURE DROP (1 ROW, 40 TONS) GPM 10 20 30 40 Water Pressure Drop 0.9 3.0 6.0 10.0 TABLE 51: HOT WATER COIL (2 ROW, 25 & 30 TON)1 GPM 20 40 60 80 1.
PAGE 83
035-16682-000-E-0303 2 3 0 .0 2 2 0 .0 2 1 0 .0 2 0 0 .0 1 9 0 .0 CAPACITY (MBH) 1 8 0 .0 1 7 0 .0 1 6 0 .0 1 5 0 .0 140 160 180 200 °F °F °F °F 140 160 180 200 °F °F °F °F 1 4 0 .0 1 3 0 .0 1 2 0 .0 1 1 0 .0 1 0 0 .0 9 0 .0 8 0 .0 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000 F L O W R A T E (C F M ) FIGURE 33 - HOT WATER COIL - 25 & 30 TON, 1 ROW, AT 10 GPM 2 7 0 .0 2 6 0 .0 2 5 0 .0 2 4 0 .0 2 3 0 .0 2 2 0 .0 CAPACITY (MBH) 2 1 0 .0 2 0 0 .0 1 9 0 .0 1 8 0 .0 1 7 0 .
PAGE 84
035-16682-000-E-0303 2 9 0 .0 2 8 0 .0 2 7 0 .0 2 6 0 .0 2 5 0 .0 2 4 0 .0 2 3 0 .0 CAPACITY (MBH) 2 2 0 .0 2 1 0 .0 140 160 180 200 2 0 0 .0 1 9 0 .0 1 8 0 .0 °F °F °F °F 1 7 0 .0 1 6 0 .0 1 5 0 .0 1 4 0 .0 1 3 0 .0 1 2 0 .0 1 1 0 .0 1 0 0 .0 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000 F L O W R A T E (C F M ) FIGURE 35 - HOT WATER COIL - 25 & 30 TON, 1 ROW, AT 30 GPM 5 8 0 .0 5 6 0 .0 5 4 0 .0 5 2 0 .0 5 0 0 .0 4 8 0 .0 4 6 0 .0 CAPACITY (MBH) 4 4 0 .0 4 2 0 .
PAGE 85
035-16682-000-E-0303 6 1 0 .0 5 9 0 .0 5 7 0 .0 5 5 0 .0 5 3 0 .0 5 1 0 .0 4 9 0 .0 4 7 0 .0 CAPACITY (MBH) 4 5 0 .0 4 3 0 .0 140 160 180 200 4 1 0 .0 3 9 0 .0 3 7 0 .0 °F °F °F °F 3 5 0 .0 3 3 0 .0 3 1 0 .0 2 9 0 .0 2 7 0 .0 2 5 0 .0 2 3 0 .0 2 1 0 .0 1 9 0 .0 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000 F L O W R A T E (C F M ) FIGURE 37 - HOT WATER COIL - 25 & 30 TON, 2 ROW, AT 60 GPM 6 4 0 .0 6 2 0 .0 6 0 0 .0 5 8 0 .0 5 6 0 .0 5 4 0 .0 5 2 0 .0 5 0 0 .
PAGE 86
035-16682-000-E-0303 2 5 0 .0 2 4 0 .0 2 3 0 .0 2 2 0 .0 2 1 0 .0 2 0 0 .0 CAPACITY (MBH) 1 9 0 .0 1 8 0 .0 1 7 0 .0 1 6 0 .0 140 160 180 200 °F °F °F °F 140 160 180 200 °F °F °F °F 1 5 0 .0 1 4 0 .0 1 3 0 .0 1 2 0 .0 1 1 0 .0 1 0 0 .0 9 0 .0 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000 F L O W R A T E (C F M ) FIGURE 39 - HOT WATER COIL - 40 TON, 1 ROW, AT 10 GPM 3 0 0 .0 2 9 0 .0 2 8 0 .0 2 7 0 .0 2 6 0 .0 2 5 0 .0 2 4 0 .0 CAPACITY (MBH) 2 3 0 .
PAGE 87
035-16682-000-E-0303 32 0.0 31 0.0 30 0.0 29 0.0 28 0.0 27 0.0 26 0.0 CAPACITY (MBH) 25 0.0 24 0.0 23 0.0 22 0.0 21 0.0 20 0.0 1 40 1 60 1 80 2 00 °F °F °F °F 140 160 180 200 °F °F °F °F 19 0.0 18 0.0 17 0.0 16 0.0 15 0.0 14 0.0 13 0.0 12 0.0 11 0.0 8 00 0 90 0 0 10 00 0 1 1 00 0 12 00 0 1 30 0 0 1 40 00 15 00 0 1 6 00 0 1 70 0 0 1 80 0 0 19 0 00 20 00 0 F L O W R AT E (C F M ) FIGURE 41 - HOT WATER COIL - 40 TON, 1 ROW, AT 30 GPM 3 4 0 .0 3 3 0 .0 3 2 0 .0 3 1 0 .0 3 0 0 .0 2 9 0 .
PAGE 88
035-16682-000-E-0303 5 3 0 .0 5 1 0 .0 4 9 0 .0 4 7 0 .0 4 5 0 .0 4 3 0 .0 CAPACITY (MBH) 4 1 0 .0 3 9 0 .0 140 160 180 200 3 7 0 .0 3 5 0 .0 °F °F °F °F 3 3 0 .0 3 1 0 .0 2 9 0 .0 2 7 0 .0 2 5 0 .0 2 3 0 .0 2 1 0 .0 1 9 0 .0 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000 F L O W R A T E (C F M ) FIGURE 43 - HOT WATER COIL - 40 TON, 2 ROW, AT 20 GPM 6 5 0 .0 6 3 0 .0 6 1 0 .0 5 9 0 .0 5 7 0 .0 5 5 0 .0 5 3 0 .0 5 1 0 .0 CAPACITY (MBH) 4 9 0 .0 4 7 0 .
PAGE 89
035-16682-000-E-0303 700.0 680.0 660.0 640.0 620.0 600.0 580.0 560.0 540.0 CAPACITY (MBH) 520.0 500.0 140 160 180 200 480.0 460.0 440.0 420.0 °F °F °F °F 400.0 380.0 360.0 340.0 320.0 300.0 280.0 260.0 240.0 220.0 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000 FLO W RATE (CFM ) FIGURE 45 - HOT WATER COIL - 40 TON, 2 ROW, AT 60 GPM 7 3 0 .0 7 1 0 .0 6 9 0 .0 6 7 0 .0 6 5 0 .0 6 3 0 .0 6 1 0 .0 5 9 0 .0 5 7 0 .0 CAPACITY (MBH) 5 5 0 .0 5 3 0 .0 5 1 0 .
PAGE 90
035-16682-000-E-0303 350 340 330 320 310 300 CAPACITY (MBH) 290 280 2 psi 6 psi 10 psi 15 psi 270 260 250 240 230 220 210 200 190 180 6000 7000 8000 9000 10000 11000 12000 13000 14000 15000 F L O W R A T E (C F M ) FIGURE 47 - STEAM COIL - 25 & 30 TON (1 ROW) 390 380 370 360 350 340 CAPACITY (MBH) 330 320 310 2 psi 6 psi 10 psi 15 psi 300 290 280 270 260 250 240 230 220 210 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000 18000 19000 20000 F L O W R A T E (C F M )
PAGE 91
035-16682-000-E-0303 G A S H E A T -V A V T B 1 U N IT 7 0 8 /B R L 2 2 T 7 1 6 /O 2 5 F U 4 6 0 V H 1 4 6 0 V L IN E V O L T A G E S H O W N F O R 2 0 8 M A IN P O F O R O T (S E E D E /2 3 0 W E H E R T A IL R V D IA G R A M 7 1 5 /B R 2 4 F U 7 0 7 /O L 3 E L E M E N T A R Y S E E D IA G R A M V O L T A G E S " A " ) P R I. H 3 X 4 7 1 4 /O H 2 H 4 X 2 X 3 X 1 2 3 0 V S E C . 7 1 3 /B R D R A F T M O T O R N o .
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035-16682-000-E-0303 FIGURE 50 - LEGEND FOR VAV UNITS 92 Unitary Products Group
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035-16682-000-E-0303 FIGURE 51 - TYPICAL WIRING FOR CV UNIT w/ GAS HEAT Unitary Products Group 93
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035-16682-000-E-0303 C V U N IT L E G E N D 1 M 2 M 3 M C O N T A C T O R , C O M P R E S S O R C O N T A C T O R , C O M P R E S S O R C O N T A C T O R , C O M P R E S S O R 4 M 5 M 6 M C O N T A C T O R , C O M P R E S S O R N o .4 S T A R T E R , IN D O O R B L O W E R C O N T A C T O R , C O N D E N S E R F A N N o .1 7 M N o .1 N o .2 N o .
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035-16682-000-E-0303 GAS FURNACE SAFETY FEATURES MOTORS COMBUSTION AIR PROVING Outdoor fan motors are permanently lubricated and require no maintenance. Lubrication, if desired, is to be performed by a qualified service agency. Combustion air proving is provided by a pressure switch. As the motor approaches full speed, this switch closes before any other circuit or gas component can be energized. ROLLOUT Rollout protection is provided by a switch mounted on the heat shield of each furnace module.
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035-16682-000-E-0303 to clean coil, be sure power to the unit is shut off prior to cleaning. TABLE 56: INDOOR BLOWER BEARING LUBRICATION SCHEDULE NOTE: Operating Speed (RPM) Shaft Size (Inches) 500 1000 1500 2000 Relubrication Cycle (Months) 1-1/16 - 1-7/16 6 6 6 6 1-1/2 - 1-3/4 6 6 6 4 1-7/8 - 2-3/16 6 6 4 4 2 -1/4 - 3 6 4 4 2 On an annual basis, check the motor for accumulations of dust, etc. That may block the cooling slots in the motor shell.
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035-16682-000-E-0303 8. After brushing is complete, blow all brushed areas with air or nitrogen. Vacuum as needed. 9. Replace parts in the order they were moved in steps 1 to 4. 10. Assure that all seams on the vent side of the combustion systems are air tight. Apply a high temperature (+500°F) sealing compound where needed (Dow Corning, Silastic 736, Loctite Superflex 596 or equivalent).
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035-16682-000-E-0303 EVAPORATOR COIL AND DRAINPAN ACCESS POWER & CONTROL WIRING FILTER ACCESS COMPRESSOR ACCESS REAR RIGHT SIDE HEAT SECTION FRONT LEFT SIDE POWER EXHAUST ACCESS HEAT SECTION FILTER DRIERS EVAPORATOR COIL AND DRAINPAN ACCESS FILTER ACCESS REAR SUPPLY BLOWER & MOTOR FIGURE 54 - COMPONENT LOCATION 98 Unitary Products Group
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035-16682-000-E-0303 4 0 0 3 8 0 3 6 0 1 1 5 °F (P S IG ) 3 4 0 D IS C H A R G E P R E S S U R E FIGURE 55 - 25 TON CHARGING CURVE Unitary Products Group 2 5 T O N C H A R G IN G C U R V E 3 2 0 1 0 5 °F 3 0 0 2 8 0 9 5 °F 2 6 0 2 4 0 8 5 °F 2 2 0 99 S U C T IO N P R E S S U R E (P S IG ) 1 0 0 9 0 8 0 7 0 6 0 5 0 4 0 2 0 0
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420 400 120 F 380 DISCHARGE PRESSURE (PSIG) FIGURE 56 - 30 TON CHARGING CURVE 100 30 TON CHARGING CURVE 360 105 F 340 320 95 F 300 280 85 F 260 220 40 50 60 70 80 SUCTION PRESSURE (PSIG) 90 100 035-16682-000-E-0303 Unitary Products Group 240
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Unitary Products Group 400 450 200 40 250 300 350 DISCHARGE PRESSURE (PSIG) 50 70 80 SUCTION PRESSURE (PSIG) 60 85 F 95 F 105 F 120 F 40 TON CHARGING CURVE 90 100 035-16682-000-E-0303 FIGURE 57 - 40 TON CHARGING CURVE 101
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035-16682-000-E-0303 P R E S S U R E D R OP A C R OS S A D R Y E V A P OR A T OR C OI L V S S U P P L Y A IR C FM PRESSURE DROP (in. wg.) 0 0.05 0.1 0.15 0.25 0.2 0.3 0.
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035-16682-000-E-0303 FIGURE 59 - PRESSURE DROP DRY EVAPORATOR COIL VS SUPPLY AIR CFM - 30 & 40 TON Unitary Products Group 103