221
15.4 Heating Operation
15.4.1 Thermostat Control
•
Thermostat off point (
Δ
D) is determined using Indoor Intake Temperature - Remote Control Setting Temperature.
Default thermostat off point is shown in table below:
Low Static Hide-away
(MA1-series)
Model
Wall Mounted
(KA1-series)
60 x 60 Cassette
(YA1-series)
95 x 95 Cassette
(UA1-series)
Slim Hide-away
(NA1-series)
4.5 / 5.6
kW
6.3 / 7.1 / 9.0
kW
Indoor fan
speed
≥
Me
2.0 3.5 -1.5 2.5
2.5
2.5
Thermostat OFF
Point (
Δ
D)
Indoor fan
speed < Me
2.0 4.0 -2.0 2.5
2.5
2.5
Thermostat
OFF
Thermostat OFF point
Thermostat OFF point - 1.0
Heating
Intake air temperature – remote
controller temperature setting
Figure 15: Heating thermostat OFF characteristic
•
Thermostat OFF continues for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature >
Thermostat OFF point – 1.0°C
15.4.2 Expansion Valve Control
•
During Thermostat OFF, the indoor unit expansion valve operation is controlled by the system.
15.5 Auto Operation
•
Operation mode is determined by indoor intake temperature and remote control setting temperature.
o
Indoor intake temperature < remote control setting temperature, Heat mode is selected.
o
Indoor
intake
temperature
≥
remote control setting temperature, Cool mode is selected.
•
Indoor intake temperature (even for the indoor unit is standing by for different operation mode) is judged by
o
Operate indoor fan at Lo- for 30 seconds, for indoor unit with DC fan motor.
o
Operate indoor fan at Lo for 30 seconds, for indoor unit with AC fan motor.
•
Immediate judgment to Heat mode if
o
Indoor intake temperature < 16°C
o
Deice
operation
•
The operation mode judgment repeats every 3 hours.
•
For second judgment onwards
o
Indoor
intake
temperature
≥
remote control setting tempe 3°C change from Heat Mode to Cool Mode.
o
Indoor intake temperature < remote control setting temperature - 3°C, change from Cool Mode to Heat Mode.
Summary of Contents for S-32NA1E5
Page 4: ...4 23 6 Heating 430 24 Exploded View and Replacement Parts List451 24 1 Indoor Unit 451 ...
Page 12: ...12 ...
Page 40: ...40 4 1 2 S 56KA1E5 S 63KA1E5 S 71KA1E5 ...
Page 42: ...42 4 3 95 x 95 Cassette Type Indoor Unit 4 3 1 S 63UA1E5 S 71UA1E5 S 90UA1E5 ...
Page 44: ...44 4 5 Low Static Pressure Hide Away Type Indoor Unit 4 5 1 S 45MA1E5 S 56MA1E5 ...
Page 45: ...45 4 5 2 S 63MA1E5 S 71MA1E5 S 90MA1E5 ...
Page 51: ...51 7 Wiring Connection Diagram 7 1 Wall Mounted Type Indoor Unit KA1E5 Series ...
Page 52: ...52 7 2 60 x 60 Cassette Type Indoor Unit YA1E5 Series ...
Page 53: ...53 7 3 95 x 95 Cassette Type Indoor Unit UA1E5 Series ...
Page 54: ...54 7 4 Slim Hide Away Type Indoor Unit NA1E5 Series ...
Page 55: ...55 7 5 Low Static Pressure Hide Away Type Indoor Unit MA1E5 Series ...
Page 56: ...56 7 6 Outdoor Unit LA1E5 Series ...
Page 57: ...57 8 Electronic Circuit Diagram 8 1 Wall Mounted Type Indoor Unit KA1E5 Series ...
Page 58: ...58 ...
Page 59: ...59 8 2 60 x 60 Cassette Type Indoor Unit YA1E5 Series ...
Page 60: ...60 ...
Page 61: ...61 8 3 95 x 95 Cassette Type Indoor Unit UA1E5 Series ...
Page 62: ...62 ...
Page 63: ...63 8 4 Slim Hide Away Type Indoor Unit NA1E5 Series ...
Page 64: ...64 ...
Page 65: ...65 8 5 Low Static Pressure Hide Away Type Indoor Unit MA1E5 Series ...
Page 66: ...66 ...
Page 67: ...67 8 6 Outdoor Unit LA1E5 Series ...
Page 68: ...68 ...
Page 70: ...70 9 1 3 Receiver PCB CN DISP 9 1 4 Error Code Display PCB CN CODE ...
Page 74: ...74 9 6 Outdoor Unit LA1E5 Series 9 6 1 Main PCB ...
Page 76: ...76 9 6 3 Capacitor PCB DCN IN DCN OUT DCP IN DCP OUT ...
Page 195: ...195 ...
Page 201: ...201 ...