Lennox Merit 13ACD-018 User Manual

Removethe existingHCFC-22refrigerantflow control
orificeorthermalexpansionvalvefromtheindoorcoil.
REPLACEMENTPARTS
If replacementpartsarenecessaryforthe indoorunit,
orderkit69J46.Thekitincludes:
• 10-- Brassnutsforliquidlineassemblies
• 20-- Teflonrings
• 10-- Liquidlineorificehousings
• 10-- Liquidlineassemblies
LIQUID LINE ORIFICE HOUSINGS (10)
_ ..._iE FL ON _%GS(s20 )NUT_
i
LIQUID LINE ASSEMBLIES
PISTON
/ RETAINER
_ TRAIN ERCOPPER
TUBE
(INCLUDES STRAINER) (10)
LIQUID LINE
ASSEMBLY
Figure 14. 69J46 Kit Components
TYPICAL FIXED ORIFICE REMOVAL PROCEDURE
DISTRIBUTOR TUBES
LIQUID LINE ORIFICE HOUSING
TEFLON RING REMOVE AND DISCARD
FIXED VALVE STEM ASSEMBLY
(IF PRESENT)
f
BRASS NUT
". i s
DISTRIBUTOR " -
ASSEMBLY
LIQUID LINE ASSEMBLY
(INCLUDES STRAINER)
VALVE STEM
VALVE STEM CAP (Uncased Coil Shown)
Figure 15. Typical Fixed Orifice Removal
1. On fully cased coils, remove the coil access and
plumbing panels.
2. Remove any shipping clamps holding the liquid line
and distributor assembly.
3. Using two wrenches, disconnect liquid line from liquid
line orifice housing. Take care not to twist or damage
distributor tubes during this process.
4. Remove and discard fixed orifice, valve stem
assembly if present and Teflon ring as illustrated in
figure 15.
Page 9
TYPICAL TXV REMOVAL PROCEDURE
(Uncased Coil Shown)
TWO PIECE
PATCH PLATE
JNCASED COIL LIQUID LINE STUB END
ONLY) \ ORIFICE HOUSING
)ISTRIBUTOR TXV
TUBES
RING
/
MALE EQUALIZER LINE /
FITTING / SUCTION
SENSING BULB LINE
LIQUID
LINE
Figure 16. Typical TXV Removal
1, On fully cased coils, remove the coil access and
plumbing panels.
2, Remove any shipping clamps holding the liquid line
and distributor assembly,
3, Disconnect the equalizer line from the TXV equalizer
line fitting on the suction line,
4, Remove the suction line sensing bulb as illustrated in
figure 16.
5, Disconnect the liquid line from the TXV at the liquid line
assembly,
6, Disconnect the TXV from the liquid line orifice housing.
Take care not to twist or damage distributor tubes
during this process,
7. Remove and discard TXV and the two Teflon rings as
illustrated in figure 16,
13ACD units can be configured for use in with HCFC-22
fixed orifice or TXV metering devices, This section
provides instructions on installing either a fixed orifice or
TXV refrigerant metering device,
1/2 TURN
Figure 17. Tightening Distance
13ACD SERIES

Lennox Merit 13ACD-018 Specifications

General

Brand	Lennox
Model	Merit 13ACD-018
Category	Air Conditioner
Language	English