Specifications

PRODUCT SPECIFICATIONS Split System Heat Pump: R4H4
428 65 6008 00 5
Specifications subject to change without notice.
Maximum Total Equivalent Length
{
− Outdoor Unit BELOW Indoor Unit
Size
Liquid Line
Diameter
w/ TXV
HP with R-410A Refrigerant - Maximum Total Equivalent Length{
Vertical Separation ft (m) Outdoor unit BELOW indoor unit;
0-20
(0 - 6.1)
21-30
(6.4 - 9.1)
31-40
(9.4 - 12.2)
41-50
(12.5 - 15.2)
51-60
(15.5 - 18.3)
61-70
(18.6 - 21.3)
71-80
(21.6 - 24.4)
18000
HP with
R-410A
3/8 250* 250* 250* 250* 250* 250* 250*
24000
HP with
R-410A
3/8 250* 250* 250* 250* 250* 250* 250*
30000
HP with
R-410A
3/8 250* 250* 250* 250* 250* 250* 250*
36000
HP with
R-410A
3/8 250* 250* 250* 250* 250* 250* 250*
42000
HP with
R-410A
3/8 250* 250* 250* 250* 250* 250* 150
48000
HP with
R-410A
3/8 250* 250* 250* 250* 230 160 --
60000
HP with
R-410A
3/8 250* 225* 190 150 110 -- --
* Maximum actual length not to exceed 200 ft (61 m)
{ Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.
−− = outside acceptable range
LONG LINE APPLICATIONS
An application is considered Long Line when the refrigerant level in the system requires the use of accessories to maintain acceptable
refrigerant management for systems reliability. Defining a system as long line depends on the liquid line diameter, actual length of the
tubing, and vertical separation between the indoor and outdoor units.
For Heat Pump systems, the chart below shows when an application is considered Long Line. Beyond these lengths, long line
accessories are required:
HP WITH R−410A REFRIGERANT LONG LINE DESCRIPTION ft (m)
Beyond these lengths, long line accessories are required
Liquid Line Size Units On Same Level Outdoor Below Indoor Outdoor Above Indoor
3/8 80 (24.4) 20 (6.1) vertical or 80 (24.4) total 80 (24.4)
Note: See Long Line Guideline for details
Model Number
Indoor Coil Model
Number
Cooling
Capacity
EER SEER
High Temp
HSPF
Low Temp
E
Capacity
E COP
H
Capacity
H COP
R4H418‡KB FEM4X18**BL 17,800 11.7 14 17,600 3.72 8.2 10,400 2.40
R4H424‡KB FEM4X24**CL 22,200 11.5 14 22,200 3.84 8.2 13,200 2.54
R4H430‡KB FEM4X30**BL 28,600 11.7 14 28,600 3.62 8.2 17,100 2.44
R4H436‡KB FEM4X36**BL 33,000 11.7 14 33,800 3.62 8.2 21,000 2.40
R4H442‡KB FEM4X42**CL 40,000 11.5 14 41,000 3.62 8.2 25,200 2.50
R4H448‡KB FEM4X48**BL 46,000 11.7 14 45,500 3.64 8.2 27,800 2.56
R4H460‡KB FXM4X60**AL 57,000 11.7 14 54,500 3.70 8.2 33,000 2.56
‡ A = Standard Grille, G = Coil Guard Grille
* AHRI = Air Conditioning, Heating & Refrigeration Institute
* Ratings are net values reflecting the effects of circulating fan heat. Supplemental electric heat is not included. Ratings are based on:
Cooling Standard: 80_F (27_C) db 67_F (19_C) wb indoor entering air temperature and 95_F (35_C) db air entering outdoor unit.
High−Temp Heating Standard: 70_F (21_C) db indoor entering air temperature and 47_F (8_C) db 43_F (6_C) wb air entering outdoor unit.
Low−Temp Heating Standard: 70_F (21_C) db indoor entering air temperature and 17_F (−8_C) db 15_F (−9_C) wb air entering outdoor unit.
COP — Coefficient of Performance
EER — Energy Efficiency Ratio
HSPF — Heating Seasonal Performance Factor
SEER — Seasonal Energy Efficiency Ratio
TESTED AHRI COMBINATION RATINGS* Or scan this QR code:
NOTE: Ratings contained in this document are subject to change at any time.
For AHRI ratings certificates, please refer to the AHRI directory. www.ahridirectory.org
Additional ratings and system combinations can be accessed via the Maratherm database:
http://www.icpeqp.com/AHRIratings/ratings.aspx?Brand=Maratherm