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INSTALLATION
MANUAL
CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . 4
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INDOOR PRODUCT NOMENCLATURE . . . . . . . . . . . . 5
UNIT INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . 11
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
See the following page 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.
CAUTION:
READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
SPLIT-SYSTEM
(AIR COOLED)
EVAPORATOR BLOWER
MODELS: LF-25
LL-30
LL-40
LL-50
Management System
SO 9001
Certified Quality
66397-BIM-B-0206
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Table of Contents
Related Manuals for Unitary products group LF-25
Summary of Contents for Unitary products group LF-25
- Page 1 SPLIT-SYSTEM (AIR COOLED) MANUAL EVAPORATOR BLOWER MODELS: LF-25 CONTENTS LL-30 LL-40 GENERAL ........4 LL-50 REPLACEMENT PARTS .
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Page 2: Table Of Contents
LF-25......... - Page 3 DISTRIBUTION (LBS) ......12 14 UNIT DIMENSIONS - LF-25, LL-30 & LL-40 ..22 ELECTRICAL DATA .
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Page 4: General
Cautions are given to prevent components are to be added to a unit to meet local codes, equipment damage. Warnings are given to alert installer that they are to be installed at the dealer's and/or the customer's Unitary Products Group... -
Page 5: Indoor Product Nomenclature
65/57 95/72 208/230-3-60 16,000 24,000 65/57 95/72 LL-50 460-3-60 16,000 24,000 65/57 95/72 575-3-60 16,000 24,000 65/57 95/72 Heating Min/Max temperatures apply to steam and hot water coils. NOTE: Do not apply steam to hot water coils. Unitary Products Group... -
Page 6: Physical Data
Operating Weight (lbs) 1125 1146 1426 1640 Hot Water Coil COMPONENT WEIGHT Accessories Steam Coil 117 (5hp) 117 (5hp) Blower Motor (1750 RPM) 120 (7.5hp) 120 (7.5hp) 120 (7.5hp) 141 (10hp) 141 (10hp) 141 (10hp) 217 (15hp) Unitary Products Group... -
Page 7: Blower Motor Mounting Locations
However, the units are shipped with and should be removed and discarded. the motor mounting assembly installed as shown in Figure 1 for the LF-25, LL-30, LL-40 and Figure 2 for the LL-50. Power LL-50 MOTOR MOUNTING wiring for blower motor is field supplied. -
Page 8: Motor Mount Arrangements
LF-25/LL-30/LL-40 MOTOR ARRANGEMENTS The LF-25, LL-30 and LL-40 units are shipped with the motor mount in location A as shown in Figure 4 . If this is the desired position, the motor mounting assembly is already in... -
Page 9: Ll-50 Motor Arrangements
The motor mounting plate can be relocated in three alternate LF-25/LL-30/LL-40 AIR DISCHARGE positions: The LF-25, LL-30 and LL-40 units are shipped for upflow ALTERNATE POSITION ONE operation, but may be converted for any of the illustrated air discharge patterns shown in Figures 7 and 8. Convert as fol-... -
Page 10: Vertical Airflow Arrangements
66397-BIM-B-0206 VERTICAL ARRANGEMENTS BLOWER EVAPORATOR COIL * IF REQUIRED, SOME AIR CAN BE BROUGHT THROUGH THE BOTTOM OF THE EVAPORATOR SECTION. FIGURE 6 - VERTICAL AIRFLOW ARRANGEMENTS FIGURE 7 - HORIZONTAL AIRFLOW ARRANGEMENTS Unitary Products Group... -
Page 11: Ll-50 Air Discharge
Units being installed horizontally (LF-25, LL-30 & LL-40 only) can be suspended from above as shown in Figure 12 . Refer to form 035-18501-000 for more information on the installa- tion of the suspension accessory and for the individual load on each hanger rod. -
Page 12: Mounting
BASE HOT WATER COIL STEAM COIL 1 ROW These weights should be added to each point load (W1 through W6) in table 5. †. This accessory can only be applied on units installed in the vertical position. Unitary Products Group... -
Page 13: Details For Securing Bottom Mounting Supports
After thes e bottom c hannels a re c ut per N ote 1 , a new h ole will have to be drilled a t the c ut end if the unit is to be mounted on is olators . FIGURE 10 - LF-25/LL-40/LL-30 WEIGHT DISTRIBUTION Unitary Products Group... -
Page 14: Weight Distribution With Suspension Application
(Only two are used on the outside supports) Refer to Figure 11 as well as Table 3 and Table 4 for One bolted connection to the heating coil section. mounting details and unit weight distribution. Unitary Products Group... -
Page 15: Duct Connections
Non-flammable material collars should be used • Be used when ducts pass through an uncondi- to minimize the transmission of noise and/or vibration. tioned space in the cooling season or through an unheated space during the heating season. Unitary Products Group... -
Page 16: Return Air Duct Angles
Where refrigerant lines pass through a wall, pack fiberglass cially when the blowers are starting. insulation and a sealing material such as Permagum around the refrigerant lines to reduce vibration and to retain some flexibility in the lines. Unitary Products Group... -
Page 17: Evaporator Section Piping
19. close to the evaporator. Make the suction line connection at the evaporator and run the line to the condensing unit. NOTE: See Liquid Line Solenoid Wiring on page 22. Unitary Products Group... -
Page 18: Pump Out
Always align twin groove pulleys using the stationary web. 10. Raise the blower shaft and re-install the shim between The blower motor pulleys are adjustable by half turns. Select the bearing and the bearing support angle. required RPM from table 5 and adjust pulley. Unitary Products Group... -
Page 19: Electrical Connections
2MP04703700 2MP04704500 2MP04704300 2MP04704000 2MP04701600 2MP04704100 2MP04704200 2MP04704300 2MP04704400 2MP04701700 2MP04704500 2MP04704600 These units are equipped from the factory with a cor- rectly sized motor starter; overload elements are not factory supplied. Three elements required per unit. Unitary Products Group... -
Page 20: Maintenance
To remove the filters from the front of the unit, loosen 2 The evaporator blower bearings and blower motor bearings screws and raise the top filter retainer. The upper filters can are permanently lubricated. Unitary Products Group... -
Page 21: Fan Peformance Data - 25 Ton
12.3 10.6 1.11 13.8 11.9 0.81 15.6 13.5 2.00 10.4 1.85 11.8 10.2 1.64 13.3 11.5 1.38 14.9 12.9 1.09 16.9 14.6 2.60 12.8 11.0 2.49 14.5 12.5 2.35 16.0 13.8 2.78 13.5 11.6 2.68 15.3 13.2 Unitary Products Group... -
Page 22: Unit Dimensions - Lf-25, Ll-30 & Ll-40
DRAIN on following pages. EVAPORATOR PIPING 5/8 PANEL COIL SECTION 5/8 BOTTOM PANEL FIGURE 17 - UNIT DIMENSIONS - LF-25, LL-30 & LL-40 TABLE 14: UNIT DIMENSIONS - LF-25, LL-30 & LL-40 MODEL 100-1/8 95-5/8 33-1/4 36-5/8 2-1/2 18-7/8... -
Page 23: Piping Connections
SUCTION SYS. #2 SUCTION SYS. #2 SYS. #1 FIGURE 22 - LL-40 PIPING CONNECTIONS FIGURE 20 - LF-25 PIPING CONNECTIONS TABLE 15: UNIT CONNECTION SIZES Connection Size Connection Entry LF-25 LL-300 LL-40 LL-50 & M2CX50 Suction Line Sys # 1... -
Page 24: Unit Dimensions
Sys. #1 4.0" 10.1" Liquid Line 3.8" Sys. #2 24.0" SUCTION LINE SYS. #2 3.0" 23.86" 6.0" 2.1" 13.5" Condensate Drain SUCTION LINE SYS. #1 6.7" 3.0" FIGURE 24 - LL-50 PIPING CONNECTIONS - END PANEL DETAIL Unitary Products Group... -
Page 25: Hole Location For Pressure Drop Reading
COIL SECTION ment. FIGURE 25 - HOLE LOCATION FOR PRESSURE DROP READING Failure to properly adjust the total system air quantity can result in extensive blower dam- age. Unitary Products Group... -
Page 26: 25-Ton Pressure Drop Vs. Cfm Across Indoor Coil
FIGURE 26 - 25-TON PRESSURE DROP VS. CFM ACROSS INDOOR COIL 30-ton Pressure Drop Across Indoor Coil 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 9000 10000 11000 12000 13000 14000 15000 FIGURE 27 - 30-TON - PRESSURE DROP VS. CFM ACROSS INDOOR COIL Unitary Products Group... -
Page 27: Indoor Coil (Domestic)
FIGURE 28 - 40 TON - PRESSURE DROP VS. CFM ACROSS INDOOR COIL (DOMESTIC) 50-ton Pressure Drop Across Indoor Coil 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 15000 17000 19000 21000 23000 25000 FIGURE 29 - 50 TON - PRESSURE DROP VS. CFM ACROSS INDOOR COIL Unitary Products Group... -
Page 28: Indoor Unit Wiring Diagram Ll-30, Ll-40 & Ll-50
66397-BIM-B-0206 FIGURE 30 - INDOOR UNIT WIRING DIAGRAM LL-30, LL-40 & LL-50 Unitary Products Group... -
Page 29: Indoor Wiring Diagram Lf-25
66397-BIM-B-0206 FIGURE 31 - INDOOR WIRING DIAGRAM LF-25 Unitary Products Group... - Page 30 66397-BIM-B-0206 Unitary Products Group...
- Page 31 66397-BIM-B-0206 Unitary Products Group...
- Page 32 66397-BIM-B-0206 Subject to change without notice. Printed in U.S.A. Copyright © by Unitary Products Group 2006. All rights reserved. Supersedes: 66397-BIM-A-0103/035-19309-000-A-0103 Unitary 5005 Norman Products York Group Drive 73069...
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