Carrier 50KC04, Руководство по установке

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10
INSTALLATION
Jobsite Survey
Complete the following checks before installation:
1. Consult local building codes and the NEC (National Electri -
cal Code) ANSI/NFPA 70 for special installation require -
ments.
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
NOTE: Select a location for the unit and its support system (curb
or other) that provides for minimum clearances required for safety
(including clearance to combustible surfaces), unit performance
and service access below, around and above unit as specified in
unit drawings. See Fig. 4. Consider also the effect of adjacent
units.
Unit may be installed directly on wood flooring or on Class A, B,
or C roof-covering material when roof curb is used. Do not install
unit in an indoor location. Do not locate air inlets near exhaust
vents or other sources of contaminated air.
Although unit is weatherproof, avoid locations that permit water
from higher level runoff and overhangs to fall onto unit.
Select a unit mounting system that provides adequate height to al -
low installation of condensate trap per requirements. Refer to Step
10 — Install External Condensate Trap and Line – for required
trap dimensions.
ROOF MOUNT
Check building codes for weight distribution requirements. Unit
operating weight is shown in Table 2.
Step 2 — Plan for Sequence of Unit Installation
The support method used for this unit will dictate different se -
quences for the steps of unit installation. For example, on curb-
mounted units, some accessories must be installed on the unit be -
fore the unit is placed on the curb. Review the following for rec -
ommended sequences for installation steps.
CURB-MOUNTED INSTALLATION
1. Install curb
2. Install field-fabricated ductwork inside curb
3. Install accessory thru-base service connection package
(affects curb and unit) (refer to accessory installation instruc -
tions for details)
4. Prepare bottom condensate drain connection to suit planned
condensate line routing (refer to Step 10 for details)
5. Rig and place unit
6. Install outdoor air hood
7. Install condensate line trap and piping
8. Make electrical connections
9. Install other accessories
PAD-MOUNTED INSTALLATION
1. Prepare pad and unit supports
2. Check and tighten the bottom condensate drain connection
plug
3. Rig and place unit
4. Convert unit to side duct connection arrangement
5. Install field-fabricated ductwork at unit duct openings
6. Install outdoor air hood
7. Install condensate line trap and piping
8. Make electrical connections
9. Install other accessories
FRAME-MOUNTED INSTALLATION
Frame-mounted applications generally follow the sequence for a
curb installation. Adapt as required to suit specific installation
plan.
Step 3 — Inspect Unit
Inspect unit for transportation damage. File any claim with trans -
portation agency.
Confirm before installation of unit that voltage, amperage and cir -
cuit protection requirements listed on unit data plate agree with
power supply provided.
Step 4 — Provide Unit Support
ROOF CURB MOUNT
Accessory roof curb details and dimensions are shown in Fig. 7.
Assemble and install accessory roof curb in accordance with in -
structions shipped with the curb.
Curb should be level. This is necessary for unit drain to function
properly. Unit leveling tolerances are shown in Fig. 8. Refer to
Accessory Roof Curb Installation Instructions for additional infor -
mation as required.
Fig. 8 — Unit Leveling Tolerances
Install insulation, cant strips, roofing felt, and counter flashing as
shown. Ductwork must be attached to curb and not to the unit. The
accessory thru-the-base power package must be installed before
the unit is set on the roof curb.
If electric and control wiring is to be routed through the basepan,
attach the accessory thru-the-base service connections to the base -
pan in accordance with the accessory installation instructions.
Table 2 — Operating Weights
50KC
UNITS LB (KG)
04 05 06
Base Unit 445 (201) 499 (226) 552 (250)
Economizer
Vertical
Horizontal
50 (23)
80 (36)
50 (23)
80 (36)
50 (23)
80 (36)
Humidi-MiZer
®
System 50 (23) 50 (23) 50 (23)
Cu Fins 25 (11) 43 (20) 56 (25)
Powered Outlet 35 (16) 35 (16) 35 (16)
Curb
14-in./356 mm
24-in./610 mm
115 (52)
197 (89)
115 (52)
197 (89)
115 (52)
197 (89)
A
B
C
MAXIMUM ALLOWABLE
DIFFERENCE in. (mm)
A-B B-C A-C
0.5 (13) 1.0 (25) 1.0 (25)