ClimateMaster ACL2120CAZ, Руководство по установке

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5.0 SYSTEM START-UP & REFRIGERANT CHARGING
5.1 Start-Up Overview
Once the system hardware and wiring have
been properly installed and the system has been
properly evacuated, the next step is to weigh in
the preliminary refrigerant charge and conduct a
final leak check before applying electrical power
and starting the system.
When the system is first started, indoor blower
motor rotation, compressor rotation, and indoor
air-flow, must be verified prior to the refrigerant
charge being finalized using pressures and the
charging chart attached to the inside of the control
box cover.
To achieve optimum system reliability and comfort,
it is important to follow the procedures in the
following sections to assure the indoor air-flow and
the refrigerant charge are correct.
CAUTION
: R-410A pressures are
approximately 60% higher (1.6 times) than R-22
pressures. Use appropriate care when using this
refrigerant. Failure to exercise care may result in
equipment damage or personal injury.
IMPORTANT:
Both the outdoor and indoor
units are shipped with a nitrogen holding charge.
Starting the system prior to evacuating the system
and adding refrigerant or while system is in a
vacuum will result in damage to the compressor.
IMPORTANT:
After the preliminary refrigerant
charge has been weighed in, it is recommended
that the electrical power be applied to the outdoor
unit for 12 hours before the compressor is started
to allow the crankcase heater to drive any liquid
refrigerant from the compressor shell.
5.2 Preliminary
Charging by Weight and
Final Leak Check
After the system has been properly evacuated,
close the valves on the manifold gauge set and
disconnect the vacuum pump. Connect the center
hose from the manifold gauge set to the R-410a
refrigerant tank. Open the valve on the refrigerant
tank and then loosen the hose at the gauge
set slightly to purge the air from the hose, then
retighten the hose at the gauge set. Invert the
refrigerant tank and place it on an accurate weight
scale (+/-1 oz [28.3g]). Inverting the refrigerant
tank will direct only liquid refrigerant to the unit.
IMPORTANT:
R-410A is a blended refrigerant
of R-32 and R-125. These two refrigerants have
different saturation curves and therefore change
state at different pressures and temperatures. If
charge is added to the system in the vapor stage,
it is possible to have a disproportionate amount
of R-32 and R-125 which will cause unstable and
inefficient operation. Therefore, it is critical to add
R-410A in the liquid form only.
Refer to the basic system charge from the unit
data plate (or table below) and add to that the
required weight of refrigerant for the line set
length. Calculate the total preliminary refrigerant
charge using the following tables and formulas.
BASIC SYSTEM CHARGE*
REQUIRED OZS. R-410A PER FT. OF TUBING
Quantities based on 110°F liquid and 45°F vapor.
Tube Size
O.D., In. [mm]
Liquid
oz/ft [g/m]
Vapor
oz/ft [g/m]
1/2 [12.7] 1.06 [100.5] 0.04 [3.7]
5/8 [15.9] 1.65 [153.5] 0.07 [6.5]
3/4 [19.1] 2.46 [228.8] 0.10 [9.3]
7/8 [22.2] 3.28 [305.1] 0.13 [12.1]
1 1/8 [28.6] 0.22 [20.5]
1 3/8 [34.9] 0.34 [31.6]
1 5/8 [41.3] 0.48 [44.7]
2 1/8 [54.0] 0.84 [78.1]
*System with 0 Feet of Tubing
MODEL CHARGE OZ (g)
(-)ACL2120 422 (11,964)
(-)ACL2150 414 (11,737)
(-)ACL2180 582 (16,500)
(-)ACL2240 650 (18,428)