Distributor Nozzle Change-Out; Filter Drier - Carrier Aero 39MN Series Installation, Start-Up And Service Instructions Manual

COIL
CASING
TXV
UPPER
SENSING
SPLIT
BULB
AIRFLOW
15 DIAMS
MIN
10
DIAMS
LOWER
SPLIT
TXV
SENSING
BULB
AIRFLOW
15
DIAMS
MIN 10
DIAMS
a39-2366
LEGEND
TXV — Thermostatic Expansion Valve
Fig. 95 — Face Split Coil Suction-Line Piping
TXV SENSING
BULBS
AIRFLOW
10 DIAMS
15
DIAMS
MIN 15
DIAMS
MIN
10 DIAMS
EVAPORATOR COIL
FIRST-ON, LAST-OFF
LEGEND
TXV — Thermostatic Expansion Valve
Fig. 96 — Row Split Coil Suction-Line Piping
UNIT
CASING
SOLENOID
SIGHT
VALVE
GLASS
FILTER
DRIER
8
DIAMS
SOLENOID
MIN
VALVE
SIGHT
GLASS
FILTER
DRIER
TXV
INSIDE
CASING
(TYP)
DISTRIBUTOR
(TYP)
8 DIAMS
MIN
EVAPORATOR
COIL
FIRST-ON, LAST-OFF
COIL UNIT
CASING
CASING
SOLENOID
VALVE
SIGHT
GLASS
FILTER
DRIER
SOLENOID
VALVE
SIGHT
GLASS
FILTER
DRIER
8
DIAMS
MIN
TXV
8
INSIDE
DIAMS
CASING
MIN
(TYP)
DISTRIBUTOR
(TYP)
a39-2367
Distributor Nozzle Change-Out —
zles are factory supplied. Thermostatic expansion valves (TX-
Vs) are either field or factory supplied. Be sure that correct
nozzle is installed in each distributor before installing expan-
sion valve. See Table 11 for factory-installed distributor nozzle
sizes. Use AHUBuilder
performance; replacement nozzles must be field-installed. The
correct nozzle is typically factory-installed.
Do not overheat distributor or cap. Failure to comply could
result in equipment damage.
Perform nozzle change-out procedure as follows:
1. Remove plastic end cap by using an electric heat gun
or a torch (see Fig. 97).
2. Clean off any grime.
3. Remove nozzle retaining ring with screwdriver or nee-
dle nosed pliers.
4. Remove nozzle from distributor by inserting 2 no. 6-
32 threaded rods (at least 4 in. long) into the threaded
holes provided in the nozzle. See Fig. 98.
5. Insert correct nozzle into distributor body.
6. Re-insert nozzle retainer ring into distributor.
PLASTIC CAP
WITH VALVE
a39-4174
Fig. 97 — Distributor and Cap
NOZZLE
RETAINER
RING
SIMPLIFIED NOZZLE
REMOVAL
G
5
NO. 6-32 THREADED
PULLER HOLES
Fig. 98 — Nozzle Change-Out
A filter drier should be installed before the
Filter Drier —
TXV to ensure satisfactory valve operation.
127
Distributor noz-
® program to select nozzles for best
CAUTION
BODY TUBING
THREADED
a39-2041
PULLER RODS