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OPTIONAL PARTS
13
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 is needed.
Note 2. The following main parts are contained 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-SK65PT)
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 right, the set temperature rises 2 degrees
automatically during the setback operation. When the setback operation
ends, nomal operation will begin.
(3) Weekly timer function
Daily timer function can apply to each day of the week.
1. REFRIGERANT PIPES
FOR model: PKH18/24FK
Part No
Pipe length
Pipe size OD
Connection method
PAC-05FFS-E
5m
PAC-07FFS-E
7m
Liquid : 3/8 Gas : 5/8
Indoor unit : Flared Outdoor unit : Flared
PAC-10FFS-E
10m
PAC-15FFS-E
15m
2. TIMER
When using a program timer, PAC-SK65PT, 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
FOR model : PKH30/36FK
Part No
Pipe length
Pipe size OD
Connection method
PAC-SC51PI-E
5m
PAC-SC52PI-E
7m
Liquid : 1/2 Gas : 3/4
Indoor unit : Flared Outdoor unit : Flared
PAC-SC53PI-E
10m
PAC-SC54PI-E
15m
Part No. PAC-SK65PT (with set back function)
Model Name Program timer
Part name Program timer
Part No. PAC-SK65PT
Exterior dimensions 120 o 120 o 15mm
Installation Wall mount
Type of clock Quartz
Clock accuracy ± 50s / month
Display — Time
— Week
— Timer setting
Liquid cystal display
Liquid cystal display
Liquid cystal display
Program cycle 24 hours
Timer setting unit 30 minutes
No. of set points 48 / day
Power rating 5V DC
Se back function Provided
OC120--3.qxp 24/6/97 1:05 AM Page 83