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4.4 Convergent drainage
4.4.1. The number of indoor units should be as small as possible to prevent the traverse main pipe overlong.
4.4.2. Indoor unit with drain pump and indoor unit without drain pump should be in different drainage system.
4.4.3. Selecting the diameter
Number of connecting indoor units
→
Calculate drainage volume
→
Select the diameter
Calculate allowed volume =Total cooling capacity of indoor units(HP)×2 (l/ hr)
Allowed
volume(lean 1/100) (l/ hr)
I.D. (mm)
Thick
Hard
≤
14
Ø 25
3.0
Hard 14
≤
88
Ø 30
3.5
Hard 88
≤
334
Ø 40
4.0
Hard 175
≤
334
Ø 50
4.5
Hard 334
Ø
80
6.0
4.5 Drainage test
Drainage without drain pump
After finishing drainpipe installation, pour some water into the water receiver plate to check if the water flows
smoothly.
Summary of Contents for YOHC 12
Page 7: ...Part 2 Indoor units Ceiling Floor Type ...
Page 17: ...4 Service space 600mm 600mm ...
Page 20: ...6 1 3 YOKC 24 6 1 4 YOKC 30 ...
Page 21: ...6 1 5 YOKC 36 6 1 6 YOKC 48 YOKC 60 ...
Page 30: ...Discharge angle 60 FLOOR Airflow velocity Temperature ...
Page 37: ...Part 3 Outdoor Units Outdoor Units ...
Page 39: ...1 Dimensions 1 1 YOJC 12 290 315 285 530 62 590 750 110 1 2 YOJC 18 12 5 ...
Page 40: ...1 3 YOJC 24 330 62 895 860 590 141 1 4 YOJC 30 YOJC 36 ...
Page 41: ...1 5 YOJC 48 YOJC 60 ...
Page 43: ...3 Wiring diagrams 3 1 Cooling Heating 3 1 1 YOJC 12 3 1 2 YOJC 18 ...
Page 46: ...4 Field Wiring ...
Page 49: ...7 Sound levels 1m Microphone 12000btu h 18000btu h ...
Page 50: ...24000btu h 3000btu h 36000btu h 48000btu h 60000btu h ...
Page 66: ...Part 4 Installation Installation ...
Page 75: ...www johnsoncontrols com SM YOHC 12 60GB 03 07 ...