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PRODUCT LITERATURE
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1998 Lennox Industries Inc.
Dallas, Texas
VALUE 10
CONDENSING UNIT
TM
Value 10 condensing units are designed for expansion
valve (TXV) and RFC systems. Refer to Lennox engi-
neering handbook for expansion valve kits which must
be ordered separately.
SHIPPING AND PACKING LIST
1- - Assembled 10ACB condensing unit
-
1- - 45
copper street elbow
1- - RFCIV refrigerant metering device (bullet)
1- - Coupling - - 5/16 x 3/8” (18, 24, 30)
Check unit for shipping damage. Consult last carrier
immediately if damage is found.
GENERAL INFORMATION
These instructions are intended as a general guide and
do not supersede national or local codes in any way.
Authorities having jurisdiction should be consulted be-
fore installation.
IMPORTANT
The Clean Air Act of 1990 bans the intentional
venting of refrigerant (CFC’s and HCFC’s) as of July
1, 1992. Approved methods of recovery, recycling
or reclaiming must be followed. Fines and/or in-
carceration may be levied for non- -compliance.
All manuals and user guides at all-guides.com
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INSTALLATION
INSTRUCTIONS
9DOXH
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&21'(16,1* 81,76
1- -1/2 through 5 ton
503,800M
2/98
Supersedes 503,755M
TABLE OF CONTENTS
VALUE 10 CONDENSING UNIT
SHIPPING AND PACKING LIST
GENERAL INFORMATION
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LIQUID & SUCTION LINE SERVICE VALVES
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CHARGING CONSIDERATIONS
CHARGING FOR RFC SYSTEMS
CHARGING FOR TXV SYSTEMS
SYSTEM OPERATION
MAINTENANCE
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10ACB CHECK POINTS
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Product contains fiberglass wool.
Disturbing the insulation in this product during
installation, maintenance, or repair will expose
you to fiberglass wool. Breathing this may cause
lung cancer. (Fiberglass wool is known to the
State of California to cause cancer.)
Fiberglass wool may also cause respiratory, skin,
and eye irritation.
To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact
your supervisor.
Lennox Industries Inc.
P .O. Box 799900
Dallas, TX 75379- -9900
3DJH
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WARNING
/LWKR 86$
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Table of Contents
Related Manuals for Lennox Value Series
Summary of Contents for Lennox Value Series
-
Page 1: Table Of Contents
SYSTEM OPERATION ......valve (TXV) and RFC systems. Refer to Lennox engi- MAINTENANCE . -
Page 2: 10Acb Unit Dimensions
All manuals and user guides at all-guides.com 10ACB UNIT DIMENSIONS- -INCHES (MM) INLET INLET INLET SUCTION LINE CONNECTION LIQUID LINE CONNECTION INLET TOP VIEW 24-1/4 (616) 24-1/4 (616) DISCHARGE OUTDOOR COIL FAN COMPRESSOR SUCTION & LIQUID LINE CONNECTION ELECTRICAL INLETS 2-3/4 (70) 3/4 (19) SIDE VIEW... -
Page 3: Setting The Unit
All manuals and user guides at all-guides.com SETTING THE UNIT Roof Mounting Install unit at a minimum of 4 inches above the surface Refer to unit dimensions on page 2 for sizing mounting of the roof. Care must be taken to ensure weight of unit is properly distributed over roof joists and rafters. -
Page 4: Plumbing
(sweat connections) to RFC Systems the indoor evaporator coil (flare or sweat connections). Use Lennox L10 (flare) or L15 (sweat, non-flare) series line sets as shown in table 1 or use field-fabricated re- 10ACB units are shipped with an RFCIV metering de- frigerant lines. - Page 5 Expansion valves equipped with either “Chatleff” or Do not attempt to backseat this valve. Attempts to flare type fittings are available from Lennox. Refer to backseat this valve will cause snap ring to explode the indoor coil installation instructions or the engineer- from valve body under pressure of refrigerant.
-
Page 6: Manifold Gauge Set
All manuals and user guides at all-guides.com 3- - Replace stem cap. Tighten finger tight, then tighten SUCTION LINE (BALL TYPE) SERVICE VALVE an additional 1/6 turn. (VALVE OPEN) USE ADJUSTABLE WRENCH ROTATE STEM CLOCKWISE 90 TO CLOSE ROTATE STEM COUNTER-CLOCKWISE 90 TO OPEN SUCTION LINE SERVICE VALVE (VALVE OPEN) STEM CAP... -
Page 7: Leak Testing
All manuals and user guides at all-guides.com 5 - - Connect the high pressure hose of the manifold tal actual pressure within a given volume or sys- gauge set to the service port of the suction valve. tem, above the absolute zero of pressure. Absolute (Normally, the high pressure hose is connected to pressure in a vacuum is equal to atmospheric pres- the liquid line port, however, connecting it to the... -
Page 8: Start-Up
All manuals and user guides at all-guides.com TABLE 3 67$5783 Ozs. per 5 ft. (ml per mm) adjust Liquid Line Set Diameter from 20 ft. (6.1m) line set* IMPORTANT 2 ounce per 5 ft. 5/16 in. (57ml per 1.5m) (8mm) 3/8 in. - Page 9 All manuals and user guides at all-guides.com TABLE 4 NORMAL OPERATING PRESSURES IN PSIG (LIQUID AND SUCTION +/- - 10 PSIG)* )+* )+* & )+* " )+*! )+*!$ )+*" )+*"& )+*$ )+*$ OUT. COIL ENTERING ENTERING MODE MODE AIR TEMP . LIQ.
- Page 10 All manuals and user guides at all-guides.com 4- - Subtract the liquid line temperature from the satu- agree with the values given in table 6. If not, add refrig- ration temperature (according to the chart) to de- erant to lower the approach temperature or recover re- termine subcooling.
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Page 11: Evaporator Coil
All manuals and user guides at all-guides.com blocked or dirty coil. The low pressure switch (SPST, 3- - Check wiring for loose connections. NO) protects the system compressor from damage due 4- - Check for correct voltage at unit (unit operating). to loss of charge. - Page 12 All manuals and user guides at all-guides.com $%#% 83 $1' 3(5)250$1&( &+(&. /,67 -RE 1DPH -RE 1R 'DWH -RE /RFDWLRQ &LW\ 6WDWH ,QVWDOOHU &LW\ 6WDWH 8QLW 0RGHO 1R 6HULDO 1R 6HUYLFH WHFKQLFLDQ 1DPHSODWH 9ROWDJH $PSV 0LQLPXP &LUFXLW $PSDFLW\ 6XSSO\ &RQGHQVHU )DQ 0D[LPXP 2YHUFXUUHQW 3URWHFWLRQ 6L]H &RPSUHVVRU (OHFWULFDO &RQQHFWLRQV 7LJKW"...