Outline of Control (Outdoor Unit) < Symbols using in this manual > Si33-105
78 Function R407C PLUS Series Heat Recovery System
STD compressor
[In cooling and simultaneous cooling / heating operation]
DSHs: STD compressor discharge pipe superheated degree
= Tds1, 2 (Th3-2) – (HP equivalent saturation temperature)
Tds1, 2 : STD compressor discharge pipe temperature (Th3-2)
[In heating operation]
[Defrosting and oil return mode]
SVTs turns ON continuously
!
SVTs is OFF at any case when STD compressor stops.
Operating Frequency Control
Normal operation
SVTs1 (Y6S), SVTs2 (Y7S) : ON
10 min
(V0829)
• DSH
S
1, DSH
S
2>15˚C
• DSH
S
1, DSH
S
2≥40˚C
• Lp<0MPa
&
OR
• DSH
S
1, DSH
S
2<15˚C
• DSH
S
1, DSH
S
2<25˚C
• Lp>0MPa
• 10 min elapsed
OR
Normal operation
SVTs1 (Y6S), SVTs2 (Y7S) : ON
2 min
• Tds1, Tds2≥100˚C
• LP<0.05MPa
• (HP+0.10) / (LP+0.10)>8
• Tds1, Tds2<90˚C
• LP<0.07MPa
• 2 min elapsed
(V0830)
OR
&
Compressor upper-limit frequency
(Nearest lower step listed below)
•71Hz+ON+OFF
•75Hz+OFF+OFF
•41Hz+OFF+OFF
In case of HTDi>115˚C
41Hz+OFF+OFF
41Hz+OFF+OFFNormal operation
HTdi≥110˚C HTdi≥115˚C
HTdi>130˚C
HTdi<105˚C
Compressor stop (for 5 min)
Forced
thermostat OFF
F3 Malfunction
stop
Normal operation
HTds1, HTds2≥110˚C
HTds1, HTds2<105˚C
HTds1, HTds2>130˚C
H
Malfunction reset
HTdi<115˚C
HTs1, HTs2<115˚C
HTdi, HTds1, HTds2>130˚C
(V0831)
Up to 2 times
within 100 min
HTdi : Adjusted discharge temperature
for Inverter Compressor
[INV Compressor]
[STD Compressor]
To Next Page
Loading...
