ARUF ASPT Installation Instructions

8
7.4 Tubing Connect ions for Flowrat or Model
1. Loosen t he 13/ 16 nut 1 T URN ONLY t o allow high pres-
sure t racer gas t o escape. No gas indicat es a possible
leak.
2. Aft er t he gas has been expelled, remove t he nut and
discard t he black or brass cap plast ic seal.
3. Remove t he f lowrat or pist on t o verif y it is t he correct
size f or t he out door unit being inst alled and t hen re-
place t he pist on (changing size, if needed). See pist on
kit chart in t he lit erat ure kit f or appropriat e pist on
size.
4. Remove t he spin closure on t he suct ion line using a
t ube cut t er and deburr t he t ube.
RUBBER
GROMMET
SUCTION LINE
WITH SPIN CLOSURE
SUCTION SPUN END AND GROMMET
Figure 10
5. Insert t he suct ion l ine int o t he connect ion, slide t he
insulat ion and t he rubber grommet at least 18" away
from t he braze j oint .
6. Remove t he t ailpiece clamped t o t he ext erior of t he
cabinet or in t he lit erat ure kit packet and slide the
13/ 16 nut into place.
7. Braze t ailpiece t o t he line set liquid t ube and braze
suct ion line connect ion. Quench all brazed j oint s wit h
a damp rag upon complet ion of brazing. Do not allow
wat er t o ent er t he inside of t he t ubing.
8. AFTER THE TAILPIECE HAS COOLED, conf irm posit ion
of t he whit e Tef lon
®
seal and hand t ight en t he 13/ 16
nut .
WHITE
TEFLON SEAL
PISTON
TAILP IECE
13/16” NUT
PLASTIC or BRASS CAP
TAILPIECE JOINT
Figure 11
9. Torque t he 13/ 16 nut t o 7-25 ft -lbs. or t ight en 1/ 6 t urn.
Excessive torque can cause orifices to stick. Use the
proper torque settings when tightening orifices.
7.5 Tubing Connections for TXV Models
TXV models come wit h f act ory inst alled TXV wit h t he bul b
pre-inst all ed on t he vapor t ube.
1. Remove ref rigerant t ubing panel or coil (lower) access
panel .
2. Remove access valve f it t ing cap and depress t he valve
st em in access f it t ing t o release pressure. No pressure
indicat es possible leak.
3. Replace t he ref rigerant t ubing panel.
4. Remove t he spin closure on bot h t he liquid and suct ion
t ubes using a t ubing cut t er.
5. Insert liquid line set int o liquid t ube expansion and
slide grommet about 18" away f rom braze j oint .
6. Insert suct ion line set int o suct ion t ube expansion and
slide insulat ion and grommet about 18" away f rom braze
j oint .
7. Braze j oint s. Quench all brazed j oint s wit h wat er or a
wet rag upon complet ion of brazing.
7.6 ASPT**14** Model s wit h Non-Adj ust abl e TXV
ASPT air handl ers equipped wit h Parker non-adj ust able TXV
should be charged by subcooling only.
ASPT25B14* * ASPT47D14* *
ASPT29B14* * ASPT47C14* *
ASPT37B14* * ASPT49D14* *
ASPT37C14* * ASPT59C14* *
M odels
Table 3
See sect ion 7. 7 f or det ailed inf ormat ion on adj ust ing t he
t hermal expansion valve.