Lennox VRF VEC034N432U User Manual

DC Inverter Multi VRF System
25
5.2.3 Appendix: Reference of Normal Operation Parameters
No
Debug item
Parameter name
Unit
Reference
1
System parameters
ODU
parameters
Outdoor temperature
°C
——
2
Compressor discharge
temp
°C
 When compressor starts, discharge temp in cool mode
is within 70~105°C and at least 10°C higher than the
high pressure saturation temp.
 As for temp in heat mode, it is within 65~90°C and at
least 10°C higher than the high pressure saturation
temp.
3 Defrosting temp °C

In cool mode, defrosting temp is 4~10°C lower than
system’s high pressure value.
 In heat mode, defrosting temp is about 2°C different
from system’s low pressure value.
4 System high pressure °C
 In cool mode, the normal high pressure value is within
20°C~55°C. According to the change of ambient temp
and system’s operating capacity, the high pressure
value will be 10°C~30°C higher than ambient temp.
The higher ambient temp is, the smaller temp
difference is. If ambient temp is 25~35°C in cool mode,
system’s high pressure value will be within 44~53°C.
 In heat mode, if ambient temp is above -5°C, system’s
high pressure value is within 40~52°C. If ambient temp
is low and many IDUs are turned on, the high pressure
will be lower.
5 System low pressure °C
 When ambient temp in cool mode is 25~35°C, the low
pressure value is 0~8°C.
 When ambient temp in heat mode is above -5°C, the
low pressure value is -15~8°C.
6
Opening angle of
thermal EXV
PLS
 In cool mode, the thermal electronic expansion valve
remains 480PLS.
 In heat mode, the adjustable opening angle of EXV is
40~480PLS.
7
Compressor’s
operating freq
Hz Changes in 10Hz~80Hz.
8
Compressor’s
operating current
A
When compressor works normally, the current is no more
than 18.4A.
9
Compressor’s IPM
temp
°C
When ambient temp is below 35°C, IPM temp is lower
than 80°C and the highest temp won’t be above 95°C.
10
Fan motor’s operating
freq
Hz Changes in 0~49Hz according to system’s pressure.
11
IDU
parameters
IDU ambient temp
°C
——
12
Indoor heat
exchanger’s inlet temp
°C

According to ambient temp, for a same IDU in cool
mode, the inlet temp will be 1°C~7°C lower than the
outlet temp, and 4~9°C higher than the low pressure
value.
 For a same IDU in heat mode, the inlet temp will be
10°C~20°C lower than the outlet temp.
13
Indoor heat
exchanger’s inlet temp
°C
14
Opening angle of
indoor EXV
PLS
 In cool mode, the opening angle of indoor EXV varies
within 70~480PLS.
 In heat mode, the opening angle of indoor EXV varies
within 70~480PLS.
15
Communication
parameters
Communication data —
Number of IDUs detected by software is the same with
the actual number. No communication error.
16 Drainage system —— —
Indoor unit can drain water out completely and smoothly.
Condensate pipe has no backward slope of water; Water
of outdoor unit can be drained completely through
drainage pipe. No water drop from unit base.
17 Others —— —
Compressor and indoor/outdoor fan motor do not have
strange noise. Unit can operate normally.

Lennox VRF VEC034N432U Specifications

General

Brand	Lennox
Model	VRF VEC034N432U
Category	Air Conditioner
Language	English