MXZ-SM48NAMHZ Service Manual

34
OCH789
0 50 100 150 200 250 300 350 400 450 500 550 600
0.70
0.75
0.80
0.85
0.90
0.95
1.00
Capacity ratio
Piping equivalent length (ft)
Total capacity of indoor unit
Figure 17 MXZ-SM36NAM-U1 MXZ-SM36NAMHZ-U1
MXZ-SM42NAMHZ-U1
MXZ-SM48NAM-U1 MXZ-SM48NAMHZ-U1 <Heating>
(2) Method for Obtaining the Equivalent Piping Length
Equivalent length = (length of piping to farthest indoor unit) + (0.3 o number of bends in the piping) (m)
4-5-1. Correction of Heating Capacity for Frost and Defrosting
If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction
factor from the following table to obtain the actual heating capacity.
Correction factor diagram
Outdoor Intake temperature <W.B.°F (°C)>
43(6) 37(4) 36(2) 32(0) 28(−2) 25(−4) 21( − 6) 18(−8) 14(−10) 5(−15) −4(−20) −13(−25)
Correction factor
1.00 0.98 0.89 0.88 0.89 0.90 0.95 0.95 0.95 0.95 0.95 0.95
Figure 18 MXZ-SM60NAM-U1 <Heating>
Total capacity of indoor unit
0 20 40 60 80 100 120 140 160 180 200 220 240 260
0.70
0.75
0.80
0.85
0.90
0.95
1.00
Capacity ratio
Piping equivalent length (ft)