Mitsubishi Electric PURY-WP-YJM-A, Справочник данных

Страница: 82 / 220

6. CAPACITY TABLES
2 - 15 OUTDOOR UNITS
OUT
DOOR
6-3-3. How to obtain the equivalent piping length
Refrigerant pipe
1. PURY-WP200YJM-A
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.35 × number of bends in the piping) [m]
2. PURY-WP250YJM-A
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.42 × number of bends in the piping) [m]
Water pipe
3. PURY-WP200, 250YJM-A
Equivalent length = (Actual piping length to the farthest indoor unit) + (0.55 × number of bends in the piping) [m]
Water piping design
HBC water pipe connection sizes and pipe sizes.
6-4. Correction at frost and defrost
Due to frost at the outdoor heat exchanger and the automatic defrost operation, the heating capacity of the outdoor unit can be
calculated by multiplying the correction factor shown in the table below.
Table of correction factor at frost and defrost
Indoor unit
Connection size Pipe size
Water inlet Water outlet Water out Water return
PEFY-WP-VMA Rc 3/4 screw Rc 3/4 screw I.D.20mm I.D.20mm
*1
Water pipework is screw
connections
Up to three units for 1 branch hole;
total capacity: below 80
(but in same mode, cooling/heating)
Note:
*1. Connection of multiple indoor units with one connection (or joint pipe)
• Total capacity of connectable indoor units: Less than 80
• Number of connectable indoor units: Maximum 3 Sets
• Selection of water piping
Select the size according to the total capacity of indoor units to be installed downstream.
• Please group units that operate on 1 branch.
To outdoor unit
HBC controller
Indoor
unit Indoor
unit Indoor
unit Indoor
unit Indoor
unit Indoor
unit
End connection (brazing)
Twinning pipe (field supply)
Outdoor inlet air temp. °C 6 4 2 1 0 -2 -4 -6 -8 -10 -20
Outdoor inlet air temp. °F 43 39 36 34 32 28 25 21 18 14 -4
PURY-WP200YJM-A 1.00 0.98 0.89 0.88 0.89 0.90 0.92 0.95 0.95 0.95 0.95
PURY-WP250YJM-A 1.00 0.98 0.89 0.88 0.89 0.90 0.92 0.95 0.95 0.95 0.95