Company HX Series Spec Sheet
FIRST CO. HX SERIES SPEC
3
HX Series
(1) All BTUH heating ratings at 240V - derate heating capacities by 25% for 208V
(2) Maximum fuse or HACR-type circuit breaker.
SUCTION LINE
5/8 SWEAT: 18, 19, 24 HX
7/8 SWEAT: 20, 25-37HX
Approved for installation with 0"
clearance to combustible materials
NOTE: Heat pump kit mustbeeldinstalledforallHXmodels
with electric heat. 0 kW models do not require kit.
(1) Add .05 static when enclosure is used.
NOTES:
(1) Above expansion valve kits are approved for both cooling
only (non heat pump) or heat pump applications.
(2) Valves are non-bleed type. Field added.
Hard start kit may be required
(3) Valves have screw-on connections.
(4) Field installed.
(Heat pump or cooling only)
FOR
R410A 18 - 37HX (1-1/2 - 3 TON)
NOM.
CFM
NOM.
BTUH
HEAT
FUSE
BTUH
18HX
-5
-6
600 18,000
2.3
3.8
5
6
17,000
20,500
22.8
27.0
25
30
30
35
25
30
30
35
19HX
&
20HX
-0-51
-3
-5
-6
-8
600 18,000
---
2.3
3.8
4.5
6.0
- - -
3
5
6
8
- - -
10,200
17,000
20,500
27,300
1.0
13.5
21.8
26.0
34.3
2
15
24
29
38
2
18
30
35
47
15
15
25
30
40
15
20
30
35
50
24, 25HX
&
26, 28HX
-0-59
-3
-5
-6
-8
-10
800 24,000
---
2.3
3.8
4.5
6.0
7.5
- - -
3
5
6
8
10
- - -
10,200
17,000
20,500
27,300
34,100
2.0
14.5
22.8
27.0
35.3
43.6
3
16
25
29
39
48
3
20
30
35
47
55
15
20
25
30
40
50
15
20
30
35
50
60
30, 31HX
&
32HX
-0-63
-3
-5
-6
-8
-10
1000 30,000
---
2.3
3.8
4.5
6.0
7.5
- - -
3
5
6
8
10
- - -
10,200
17,000
20,500
27,300
34,100
2.0
14.5
22.8
27.0
35.3
43.6
3
16
25
29
39
48
3
20
30
35
47
55
15
20
25
30
40
50
15
20
30
35
50
60
36HX
&
37HX
-0-70
-3
-5
-6
-8
-10
1200 36,000
---
2.3
3.8
4.5
6.0
7.5
- - -
3
5
6
8
10
- - -
10,200
17,000
20,500
27,300
34,100
2.8
15.3
23.6
27.8
36.1
44.5
4
18
27
31
40
49
4
20
30
35
46
56
15
20
30
35
40
50
15
20
30
35
50
60
A B C D
18HX
19HX
24HX
37-1/4 34-11/16 30 6-1/2
20HX
25HX
30HX
43-1/4 40-11/16 36 6-1/2
26HX
31HX
36HX
49-1/4 46-11/16 42 6-1/2
28HX
32HX
37HX
56-1/4 53-11/16 49 6-1/2
MOTOR
0.00 0.05 0.10 0.15 0.20 0.25 0.30
18HX 1/8 810 775 740 705 670 640 610
19HX 1/8 820 785 750 715 680 650 620
20HX 1/8 850 815 780 745 710 670 630
24, 28HX 1/4 910 875 840 805 770 730 690
25HX 1/4 930 895 860 825 790 750 710
26HX 1/4 960 925 890 850 810 770 730
30, 31HX 1/4 1110 1075 1040 990 940 900 860
32HX 1/4 1170 1140 1110 1075 1040 1000 960
36HX 1/3 1410 1370 1330 1290 1250 1210 1170
37HX 1/3 1460 1420 1380 1340 1300 1250 1200
PART NO. DESCRIPTION
942-1 KIT FOR HX MODELS WITH ELECTRIC HEAT
In keeping with its policy of continuous progress and product
improvement, First Co. reserves the right to make changes
without notice. Maintenance for all First Co. products is
available under “Product Maintenance” at