Si33-105 Outline of Control (Outdoor Unit) < Symbols using in this manual >
Function R407C PLUS Series Heat Recovery System 63
"
1
Compressor frequency
Fix the frequency at 41Hz + OFF + (OFF) for the basic operation.
However, increase the compressor operation step with four way valve function assuring control
to ensure the operation of the 4-way valve.
"
2
Opening degree of EV (in 3 compressor system: EV3) on sub unit side
20S2=ON
→
0 pls
20S2=OFF
→
500 pls
"
3
Indoor unit instruction cancellation conditions
Then, fix at 500 pls to return to the normal control in the following conditions.
"
4
Control ending conditions
OR
HP>1.47MPa
Startup control ending
(V2575)
or
Pc>1.96MPa
Elapsed time of 1 minute after 500pls instruction startup
(V2576)
OR
OR
Elapsed time of 1 minute
Elapsed time of 15 minutes (local setting of 10 minutes) (30 minutes in power ON)
When ending the control in
these conditions, maintain the
upper-limit frequency at 29Hz
+ OFF(+OFF) for 2 minutes.
• Indoor unit thermostat ON capacity of 8.0kW
(3HP) or less
•
OR
DSH>30
Th7-Te>10
LP<1.0k
•Ta ≥ 30˚C
•
&
•Ta < 30˚C
•Pc ≥ 23k (56.7˚C)
•Pc ≥ 2.37MPa
&
&
(V2577)
To Next Page
Loading...
