Unico IS18G050, Руководство по установке

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Bulletin 30-121.019 23 Copyright © 2015 Unico, Inc.
(SAC 37.4255.109.02)
Outdoor Units
MODEL Power Supply
Full Load
Current,
amps
Minimum Circuit
Ampacity (MCA)
Maximum
Overcurrent
Protection (MOP)
IS18G050
1 phase
60 Hz
208-230 V
10.0 13 20
IS24G065 12.5 16 25
IS30G080 16.0 20 35
IS36G110 22.0 28 50
Indoor Units
MODEL Power Supply
Full Load
Current,
amps
Minimum Circuit
Ampacity (MCA)
Maximum
Overcurrent
Protection (MOP)
IS12MPA
1 phase
60 Hz
208-230 V
0.5 * *
IS24MPB 0.5 * *
U1218L-1EA2AX 3.2 4.0 15
M2430BL1-EA2 + MB2430CL1-A 3.2 4.0 15
M3036BL1-EA2 + MB3036CL1-A 6.1 7.7 15
* High Wall units are connected directly to outdoor unit. Do not fuse separately.
** SDHV air handlers MUST be fused separately. DO NOT POWER the SDHV air handlers from the outdoor unit.
Pump down means collecting all refrigerant gas in the
system back into the outdoor unit without losing gas.
Pump down is used when the unit is to be moved or
before servicing the refrigerant circuit.
Connect a valve manifold to the charge port on a
wide tube service valve, partially open it (1/4 turn).
Let the air purge from the manifold. Fully close the narrow
tube service valve all the way.
Turn on the unit's operating switch and start cooling
operation. When the low-pressure gauge reading
reaches 10 to 20 psi (0.5 to 1.0 kg/cm
2
) close the wide
tube valve and then quickly turn off the unit.
Remove the valve manifold.
Repeat the operations for each circuit
At that time, PUMP DOWN has been completed and all
refrigerant gas will have been collected in the outdoor
unit.
DO NOT VENT! Do not vent R410A into the atmosphere. R410A is a fluorinated greenhouse gas, covered by Kyoto
Protocol with Global Warming Potential (GWP) = 1975.
UNIT
4
UNIT
3
UNIT
2
Discharge pressure
(all modes)
Suction pressure (cooling mode)
Discharge pressure (heating mode)
POWER SUPPLY
PUMP DOWN PROCEDURE
A
B