Installation guide

NOTE: Avoid contact between tubing and structure
iNDOOR WALL
diD TUBE
INSULATION
THROUGH THE WALL
.-_ JOIST
1
C
1
SUSPENSION
Fig. 2--Connecting Tubing InstNtation
INSTALLATION
A01383
Specifications %r t!_is unit in residential new construction market
require the outdoor unit, indoor unit, refi'igerant tubing sets,
metering device, and filter drier listed in prosaic literature. There
can be no deviation. Consult the Application Guideline and
Service Manual Residential Split-System Air Conditioners and
Heat Pumps using PuronR; Refl'igerant to obtain required unit
changes fbr specific applications and for R-22 retrofit.
Step 1--Check Equipment and Job Site
L NPA(K UNIT
Move to final location Remove carton taking care not to damage
unit,
INSPECT EQUIPMENT
File claim with shipping company prior to installation if shipment
is damaged or incomplete Locate unit rating plate on unit corner
panel It contains information needed to properly install unit
(hock rating plate to be sure unit matches job specifications.
Step 2--Bnstall On a Solid, Level Mounting Pad
If conditions or local codes require the unit be attached to pad, tie
down bolts should be used and fastened through knockouts
provided in unit base pan. Refer to unit mounting pattern in Fig 3
to detem_ine base pan size and knockout hole location.
On rooftop applications, mount or* level platfbrm or f?ame. Place
unit above a load-bearing wall and isolate unit and tubing set ti'om
structure. Arrange supporting members to adequately support unit
and nainimize transmission of vibration to building. Consult local
codes governing rooftop applications.
Roof mounted units exposed to winds above 5 mph may require
wind banes. (onsult the Application Guideline and Service
Manual Residential SplitoSystem Air Conditioners and Heat
Pumps using Puron® Refrigerant for wind battle construction.
NOTE: Unit must be level to within ÷ 2° (÷ 3/8 inJft) per
compressor manufacturer specifications.
Step 3--Clearance Requirements
When installing, allow sufficient space for airflow clearance,
wiring, refiigerant piping, and service Allow 30=in clearance to
service end of unit and 48 in above unit For proper airflow, a 6oin
clearance on 1 side of unit and 12 in or* all remaining sides must
I
I 3/8"D (953) TIEDOWN
KNOCKOUTS (2) PLACES
B .I
UNIT BASE PAN
DIMENSIONS
22-112 X 22-112
30 X 30
A94199
DUMENSIONS(N.)
TIEDOWN KNOCKOUT LOCATIONS
A B C
3-11/16 18-1/8 14-3/8
6-1/2 2%1/2 20
Fig. 3--Mounting Unit to Pad
be maintained Maintain a distance of 24 in between units.
Position so water, snow, or ice from roof or eaves cannot fall
directly on unit
Step 4_Operating Ambients
The mininlum outdoor opeIating ambient in cooling mode is 55°F,
and the maxin-mm outdoor operating ambient in cooling mode is
125°F.
Step g--Cheek Indoor AccuRater® Piston and
hstaH Piston Ring {38EZG Standard)
If'unit is to be installed with a piston metering device, proceed as
follows:
1. (hock indoor coil piston to see if it matches the required
piston shown on outdoor unit rating plate. If it does not match,
replace indoor coil piston with piston shipped with outdoor
unit. The piston shipped with outdoor unit is correct fbr any
approved indoor coil combination.
2. After correct piston is installed, locate Teflon piston ring
shipped in piston bag. Install piston ring behind metering
piston as shown in Fig. 4. The piston ring ensures that piston
stays seated during all operating conditions.
NOTE: If a Puron TXV is used wit}* a Puron reciprocating
compressor, an appropriate accessoLw hard start kit (capacitor and
relay) must be used. For the appropriate accessoQ" hard start kit see
the Product Data Digest.
Step 6--TXV InstNlation (38ETG and 38ESG Required)
NOTE: All 38ETG and 3gESG units MLST be installed with a
hard shut off PuronR: TXV.
The thern_ostatic expansion valve is specifically designed to
operate with Puron®. De not use an R-22 TXV. An existing Ro22
TXV must be replaced with a factory-approved TXV specifically
designed fbr PuronRL To replace an Ro22 TXV, re*_r to Installa-
tion Inshqactions packaged with accessow- kit.
NOTE: FK4 and F(4 tim coils are equipped with an Ro22 TXV.
If an FK4 or an FC4 fire coil is used with a Puron® air conditioner,
the Ro22 TXV must be replaced with a Puront_ TXV.