Installation; Jobsite Survey; Step 1 - Plan For Unit Location - Carrier Gemini 38AU Series Installation, Start-Up And Service Instructions Manual

Refrigeration System
# Circuits / # Comp. / Type
Refrigerant Type
R-410A shipping charge A/B (lbs)
System charge w/ fan coil*
Metering device
High-press. Trip / Reset (psig)
Low-press. Trip / Reset (psig)
Compressor
Model (Qty)
Oil Charge A/B (oz)
Speed (rpm)
Condenser Coil
Material
Coil type
Rows / FPI
total face area (ft 2 )
Condenser fan / motor
Qty / Motor drive type
Motor HP / RPM
Fan diameter (in.)
Nominal Airflow (cfm)
Watts (total)
Piping Connections
Qty / Suction (in. ODS)
Qty / Liquid (in. ODS)
* Approximate system charge with about 25 ft piping of sizes indicated with matched 40RU.

INSTALLATION

Jobsite Survey

Complete the following checks before installation.
1. Consult local building codes and the NEC (National Electrical
Code) ANSI/NFPA 70 for special installation requirements.
2. Determine unit location (from project plans) or select unit
location.
3. Check for possible overhead obstructions which may inter-
fere with unit lifting or rigging.
Step 1 — Plan for Unit Location
The 38AU units are designed and approved for outdoor installa-
tion only. Do not locate these units indoors. Do not add ducting to
unit fan system.
Select a location for the unit and its support system (pad, rails or
other) that provides for the minimum clearances required for safe-
ty. This includes the clearance to combustible surfaces, unit per-
formance and service access below, around and above unit as
specified in unit drawings. See Fig. 4.
NOTE: Local codes may require different clearances than
specified in Fig. 4. It is the responsibility of installers to be
knowledgeable in local codes and to modify the recommended
clearances to satisfy local codes.
NOTE: Consider also the effect of adjacent units on airflow per-
formance and control box safety clearance.
Table 6 — 38AUD*12-14 Physical Data
TWO CIRCUIT MODELS with RTPF – ROUND TUBE/PLATE FIN COIL DESIGN
38AUD*12
2 / 2 / Scroll
Puron ® R-410A
9.0 / 9.0
11.0 / 11.0
TXV
630 / 505
54 / 117
ZP51 (2)
42 / 42
3500
Al/Cu
RTPF
2 / 17
25.1
2 / direct
1 / / 1100
4
22
6,000
610
2 / 1 1 /
8
2 / 3 /
8
REAR:
Min 18" (457 mm)
required for service
LEFT:
Min 18" (457 mm)
required for service
NOTE: Observe requirements for 39" (914 mm) operating
Fig. 4 — Service Clearance Dimensional Drawing
Do not install the outdoor unit in an area where fresh air supply to
the outdoor coil may be restricted or when recirculation from the
condenser fan discharge is possible. Do not locate the unit in a
well or next to high walls.
Evaluate the path and required line length for interconnecting re-
frigeration piping, including suction riser requirements (outdoor
unit above indoor unit), liquid line lift (outdoor unit below indoor
unit) and hot gas bypass line. Relocate sections to minimize the
length of interconnecting tubing.
IMPORTANT: DO NOT BURY REFRIGERANT LINES.
Although unit is weatherproof, avoid locations that permit water
from higher level runoff and overhangs to fall onto the unit.
6
38AUD*14
2 / 2 / Scroll
Puron R-410A
9.0 / 9.0
22.0 / 22.0
TXV
630 / 505
54 / 117
ZP67 (2)
56 / 56
3500
Al/Cu
RTPF
3 / 17
31.8
2 / direct
1 / / 1100
4
22
6,000
610
2 / 1 3 /
8
2 / 1 /
2
FRONT:
42" (1067 mm)
required for service
clearance on either Left or Rear coil opening.
RIGHT:
Min 18" (457 mm)
required for service