Service Manual

TECHNICAL SUPPORT MANUAL Split System Heat Pump: (H,C,T)CH(6)
428 04 170100 63
R--410A COOLING CAPACITY LOSS FOR VARIOUS LINE LENGTHS & TUBE DIAMETERS
Unit
Nominal
Size (Btuh)
Maximum
Liquid Line
Diameter
(OD)
in.(mm)
Vapor Line
Diameters
(OD)
in. (mm)
Cooling Capacity Loss (%) at Total Equivalent Line Length, feet (m)
26--50
(7.9--15.2)
51--80
(15.5--24.4)
81--100
(24.7--30.5)
101--125
(30.8--38.1)
126--150
(38.4--45.7)
151--175
(46.0--50.3)
176--200
(53.6--60.0)
201--225
(61.3--68.6)
226--250
(68.9--76.2)
24
2--Stage
HP
3/8 (10)
5/8 (16) 0 1 1 2 3 3 4 4 5
3/4 (19) 0 1 1 1 1 1 1 1 1
36
2--Stage
HP
5/8 (16) 1 2 4 5 6 7 9 10 11
3/4 (19) 0 0 1 1 2 2 3 3 4
7/8 (22) 0 0 -- -- -- -- -- -- --
48
2--Stage
HP
3/4 (19) 1 2 2 3 4 5 6 7 7
7/8 (22) 0 1 1 2 2 2 3 3 4
1--1/8 (29) 0 0 -- -- -- -- -- -- --
60
2--Stage
HP
3/4 (19) 1 2 4 5 6 8 9 10 11
7/8 (22) 0 1 2 2 3 4 4 5 5
1--1/8 (29) 0 0 -- -- -- -- -- -- --
Standard Length -- 80 ft. (24.4m) or less total equivalent length.
Applications in this area are long line. Accessories are required as shown recommended on the AC & HP R410A Split System Long Line Applications Guideline.
Applications in this area may have height restrictions that limit allowable total equivalent length, when outdoor unit is below indoor unit.
-- Applications in this area are not recommended due to insufficient oil return.
ACCESSORY USAGE GUIDELINES
Accessory
REQUIRED FOR LONG LINE
APPLICATIONS* (Over 80 ft. / 24.38 m)
REQUIRED FOR SEA COAST APPLICATIONS
(within 2 miles/3.22 km)
Accumulator Yes, Standard Standard
Compressor Start Assist Capacitor and Relay Yes No
Crankcase Heater Yes, Standard No
Liquid Line Solenoid Valve See Long Line Applications Guideline No
Support Feet No Recommended
* For tubing line sets between 80 and 200 ft. (24.38 and 60.96 m) and/or 20 ft. (6.09 m) vertical differential, refer to Long Line Applications Guideline.
ACCESSORIES
Part Number Description
Used On
Model Size
NASA001LS Liquid Line Solenoid Valve, HP, R--22 or R--410A ALL
NASA001TD T ime Delay Relay, Indoor Blower ALL
NASA001SF Support Feet, 4” (102mm) tall ALL
NASA00106SS Snow Stand Kit ALL
NASA010SC Hard Start Kit (Capacitor & Relay) 24
NASA011SC Hard Start Kit (Capacitor & Relay) 36
NASA012SC Hard Start Kit (Capacitor & Relay) 48
NASA013SC Hard Start Kit (Capacitor & Relay) 60
WALL CONTROL
TSTAT0101SC Observert Self Configuring Communicating Wall Control ALL
International Comfort Products, LLC
Lewisburg, Tennessee 37091 USA