Mitsubishi Electric PLH Series, Technical & Service Manual

Page: 78 / 84

78
15
OPTIONAL PARTS
Note 1. How to connect refrigerant pipes.
Factory supplied optional refrigerant pipings contain refrigerant at the above atmospheric pressures. As long as the
connection takes no more than 5 minutes, no air will enter, and there will be no need for air purging.
Remove the blind caps and make the connections within 5 minutes. After the connections for the indoor and outdoor
units are made, open the stop valve on the outdoor unit to allow refrigerant gas to flow.
If piping length exceeds 5m, an additional charge of refrigerant in needed.
Note 2. The following main parts are cntained in the optional refrigerant piping kit.
Heat insulating cover, vinyl tapes, nipples, sleeve and flange (for wall hole), connecting cables.
2-2 Feature of program timer
(1) Daily timer function
Daily timer can be set in 30 minutes units for up to 24 hours.
Each unit can be set for unit ON, unit OFF, or setback operation.
(2) Setback operation (PAC-SC32PT)
Set back operation is useful for reducing running costs
e.g. At a hotel with a 24-hour system
8:00~23:00 Cooling operation with set temperature at 26°C
23:00~8:00 Setback operation with 2 degrees of setback
As shown in the chart on the night, the set temperature rises 2 degrees
automatically during the setback operation. When the setback operation
ends, normal operation will begin.
(3) Weekly timer function
Daily timer function can apply to each day of the week.
1. REFRIGERANT PIPES
Service Ref. : PLH-3GK(H)B
1
.UK
Service Ref. : PLH-4GK(H)SB
1
.UK,PLH-5GK(H)SB
1
.UK,PLH-6GK(H)SB
1
.UK
2. TIMER
When using a program timer, a program timer adapter (PAC-825AD) is also needed.
2-1 Program timer specifications
28
˚
C
26
˚
C
8:00
Normal
operation
23:00
Setback
operation
8:00
Normal
operation
Part No. PAC-05FFS-E PAC-07FFS-E PAC-10FFS-E PAC-15FFS-E
Pipe length 5m 7m 10m 15m
Pipe size O.D .
Liquid: [ 9.52 Gas: [ 15.88
Connection method Indoor unit: Flared Outdoor unit: Flared
Part No. PAC-PC51PI-E PAC-SC52PI-E PAC-SC53PI-E PAC-SC54PI-E
Pipe length 5m 7m 10m 15m
Pipe size O.D.
Liquid: [ 9.52 Gas: [ 19.05
Connection method Indoor unit: Flared Outdoor unit: Flared
Part No. PAC-SC32PTA (with set bak function)
Model Name Program timer
Parts name Program timer
Parts No. PAC-SC32PTA
Exterior dimensions (inch) 5-4/32x4-23/32x23/32 (130x120x18mm)
Installation Wall mount
Type of clock Quartz
Clock accuracy ±50 second / month at 25°C
Display-Time
-Week
-Timer setting unit
Liquid crystal display
Liquid crystal display
Liquid crystal display
Program cycle 24 hours
Timer setting unit 30 minutes
No. of set points 48 / day
Power rating 5V DC ±5% (Supplyed by Remote Controller)