Reznor RXH (Outdoor PreevA) Unit Installation Manual User Manual
Page 21
Form I-RDH/REH/RHH/RXH (12-14), P/N 215210 R14, Page 21
High Altitude Capacity Changes for Model RDH with Gas Control Option AG1, AG2, AG3, AG8, AG9, AG9H,
AG15, AG16, AG40, AG60, AG61, AG62, DG1, DG2, DG5, DG6, D12B, or D12C and Model RHH with Option
AG1, AG2, AG3, AG15, AG16, or D12C. (Does not apply to AG58 or D12G; see NOTE page 19.)
The input and/or the capacity of the heater changes with altitude.
TABLE 12 below lists inputs and capacities at altitudes
from sea level to 9,000 ft (2745M) in the United States and to 4,500 ft (1373M) in Canada for Model RDH.
TABLE 13,
page 22, lists the same information for Model RHH.
BTUH Inputs and Capacities by Altitude in the UNITED STATES for Model RDH
ALTITUDE
Normal
Input
Thermal
Output
Capacity
2-Stage
Minimum
Input
(applies to
AG2, AG3,
AG15,
AG16)
2-Stage with Venter
Motor Controller
Minimum Input
(applies to AG60,
AG61, AG62, DG1,
DG5, D12C)
Modulation
Minimum Input
(applies to Options
AG8, AG9, AG9H,
AG40, DG2, DG6,
D12B)
Normal
Input
Thermal
Output
Capacity
2-Stage
Minimum
Input
(applies to
AG2, AG3,
AG15,
AG16)
2-Stage with Venter
Motor Controller
Minimum Input
(applies to AG60,
AG61, AG62, DG1,
DG5, D12C)
Modulation
Minimum Input
(applies to Options
AG8, AG9, AG9H,
AG40, DG2, DG6,
D12B)
Normal
Input
Thermal
Output
Capacity
2-Stage
Minimum
Input
(applies to
AG2, AG3,
AG15,
AG16)
2-Stage with Venter
Motor Controller
Minimum Input
(applies to AG60,
AG61, AG62, DG1,
DG5, D12C)
Modulation
Minimum Input
(applies to Options
AG8, AG9, AG9H,
AG40, DG2, DG6,
D12B)
Natural
Propane Natural Propane
Natural
Propane Natural Propane
Natural Propane Natural Propane
Feet
Meters
RDH Size 75
RDH Size 100
RDH Size 125
0-2000
0-610
75,000
60,750
52,500
24,750
30,000
18,750
30,000 100,000 81,000
70,000
33,000
40,000
25,000
40,000 125,000 101,250
87,500
41,250
50,000
31,250
50,000
2001-3000
611-915
70,500
57,105
49,350
23,265
28,200
17,625
28,200
94,000
76,140
65,800
31,020
37,600
23,500
37,600
117,500
95,175
82,250
38,775
47,000
29,375
47,000
3001-4000 916-1220
69,000
55,890
48,300
22,770
27,600
17,250
27,600
92,000
74,520
64,400
30,360
36,800
23,000
36,800
115,000
93,150
80,500
37,950
46,000
28,750
46,000
4001-5000 1221-1525 67,500
54,675
47,250
22,275
27,000
16,875
27,000
90,000
72,900
63,000
29,700
36,000
22,500
36,000
112,500
91,125
78,750
37,125
45,000
28,125
45,000
5001-6000 1526-1830 66,000
53,460
46,200
21,780
26,400
16,500
26,400
88,000
71,280
61,600
29,040
35,200
22,000
35,200
110,000
89,100
77,000
36,300
44,000
27,500
44,000
6001-7000 1831-2135 64,500
52,245
45,150
21,285
25,800
16,125
25,800
86,000
69,660
60,200
28,380
34,400
21,500
34,400 107,500
87,075
75,250
35,475
43,000
26,875
43,000
7001-8000 2136-2440 63,000
51,030
44,100
20,790
25,200
15,750
25,200
84,000
68,040
58,800
27,720
33,600
21,000
33,600 105,000
85,050
73,500
34,650
42,000
26,250
42,000
8001-9000 2441-2745 61,500
49,815
43,050
20,295
24,600
15,375
24,600
82,000
66,420
57,400
27,060
32,800
20,500
32,800 102,500
83,025
71,750
33,825
41,000
25,625
41,000
Feet
Meters
RDH Size 150
RDH Size 175
RDH Size 200
0-2000
0-610
150,000 121,500
105,000
49,500
60,000
37,500
60,000 175,000 141,750
122,500
57,750
70,000
43,750
70,000 200,000 162,000
140,000
66,000
80,000
50,000
80,000
2001-3000
611-915
141,000 114,210
98,700
46,530
56,400
35,250
56,400 164,500 133,245
115,150
54,285
65,800
41,125
65,800 188,000 152,280
131,600
62,040
75,200
47,000
75,200
3001-4000 916-1220 138,000 111,780
96,600
45,540
55,200
34,500
55,200 161,000 130,410
112,700
53,130
64,400
40,250
64,400 184,000 149,040
128,800
60,720
73,600
46,000
73,600
4001-5000 1221-1525 135,000 109,350
94,500
44,550
54,000
33,750
54,000 157,500 127,575
110,250
51,975
63,000
39,375
63,000 180,000 145,800
126,000
59,400
72,000
45,000
72,000
5001-6000 1526-1830 132,000 106,920
92,400
43,560
52,800
33,000
52,800 154,000 124,740
107,800
50,820
61,600
38,500
61,600 176,000 142,560
123,200
58,080
70,400
44,000
70,400
6001-7000 1831-2135 129,000 104,490
90,300
42,570
51,600
32,250
51,600 150,500 121,905
105,350
49,665
60,200
37,625
60,200 172,000 139,320
120,400
56,760
68,800
43,000
68,800
7001-8000 2136-2440 126,000 102,060
88,200
41,580
50,400
31,500
50,400 147,000 119,070
102,900
48,510
58,800
36,750
58,800 168,000 136,080
117,600
55,440
67,200
42,000
67,200
8001-9000 2441-2745 123,000 99,630
86,100
40,590
49,200
30,750
49,200 143,500 116,235
100,450
47,355
57,400
35,875
57,400 164,000 132,840
114,800
54,120
65,600
41,000
65,600
Feet
Meters
RDH Size
225
RDH Size
250
RDH Size 300
0-2000
0-610
225,000 182,250
157,500
74,250
90,000
56,250
90,000 250,000 202,500
175,000
82,500
100,000
62,500 100,000 300,000 243,000
210,000
99,000
120,000 75,000 120,000
2001-3000
611-915
211,500 171,315
148,050
69,795
84,600
52,875
84,600 235,000 190,350
164,500
77,550
94,000
58,750
94,000 282,000 228,420
197,400
93,060
112,800 70,500 112,800
3001-4000 916-1220
207,000 167,670
144,900
68,310
82,800
51,750
82,800 230,000 186,300
161,000
75,900
92,000
57,500
92,000 276,000 223,560
193,200
91,080
110,400 69,000 110,400
4001-5000 1221-1525
202,500 164,025
141,750
66,825
81,000
50,625
81,000 225,000 182,250
157,500
74,250
90,000
56,250
90,000 270,000 218,700
189,000
89,100
108,000 67,500 108,000
5001-6000 1526-1830
198,000 160,380
138,600
65,340
79,200
49,500
79,200 220,000 178,200
154,000
72,600
88,000
55,000
88,000 264,000 213,840
184,800
87,120
105,600 66,000 105,600
6001-7000 1831-2135
193,500 156,735
135,450
63,855
77,400
48,375
77,400 215,000 174,150
150,500
70,950
86,000
53,750
86,000 258,000 208,980
180,600
85,140
103,200 64,500 103,200
7001-8000 2136-2440
189,000 153,090
132,300
62,370
75,600
47,250
75,600 210,000 170,100
147,000
69,300
84,000
52,500
84,000 252,000 204,120
176,400
83,160
100,800 63,000 100,800
8001-9000 2441-2745
184,500 149,445
129,150
60,885
73,800
46,125
73,800 205,000 166,050
143,500
67,650
82,000
51,250
82,000 246,000 199,260
172,200
81,180
98,400
61,500
98,400
Feet
Meters
RDH Size 350
RDH Size 400A
0-2000
0-610
350,000 283,500
245,000
115,500 140,000
87,500 140,000 400,000 324,000
280,000
132,000
160,000 100,000 160,000
2001-3000
611-915
329,000 266,490
230,300
108,570 131,600
82,250 131,600 376,000 304,560
263,200
124,080
150,400
94,000 150,400
3001-4000 916-1220 322,000 260,820
225,400
106,260 128,800
80,500 128,800 368,000 298,080
257,600
121,440
147,200
92,000 147,200
4001-5000 1221-1525 315,000 255,150
220,500
103,950 126,000
78,750 126,000 360,000 291,600
252,000
118,800
144,000
90,000 144,000
5001-6000 1526-1830 308,000 249,480
215,600
101,640 123,200
77,000 123,200 352,000 285,120
246,400
116,160
140,800
88,000 140,800
6001-7000 1831-2135 301,000 243,810
210,700
99,330
120,400
75,250 120,400 344,000 278,640
240,800
113,520
137,600
86,000 137,600
7001-8000 2136-2440 294,000 238,140
205,800
97,020
117,600
73,500 117,600 336,000 272,160
235,200
110,880
134,400
84,000 134,400
8001-9000 2441-2745 287,000 232,470
200,900
94,710
114,800
71,750 114,800 328,000 265,680
229,600
108,240
131,200
82,000 131,200
TABLE 12 - BTUH Inputs and Capacities by Altitude for Model RDH
5. With the heater operating, determine that the inlet (supply) pressure to the heater
for natural gas is between 5 inches w.c.
(or as noted on the rating plate) and 14
inches w.c. and for propane between 11 and 14 inches w.c. Take this reading as
close as possible to the heater. (Heaters are equipped with a gas valve that has an
inlet pressure tap.) If the inlet (supply) pressure is not within the specified range,
the inlet (supply) pressure must be corrected and Steps 3 and 4 repeated.
6. Find the High Altitude Adjustment label in the plastic bag that contained these
instructions. Using a permanent marker, fill-in the appropriate information from
TABLE 12A or 12B. Affix the label to a clean, dry, and conspicuous location on the
outside of the heater access panel.
BTUH Inputs and Capacities by Altitude in CANADA for Model RDH
ALTITUDE
Normal
Input
Thermal
Output
Capacity
2-Stage
Minimum
Input
(applies to
AG2, AG3,
AG15,
AG16)
2-Stage with Venter
Motor Controller
Minimum Input
(applies to AG60,
AG61, AG62, DG1,
DG5, D12C)
Modulation
Minimum Input
(applies to Options
AG8, AG9, AG9H,
AG40, DG2, DG6,
D12B)
Normal
Input
Thermal
Output
Capacity
2-Stage
Minimum
Input
(applies to
AG2, AG3,
AG15,
AG16)
2-Stage with Venter
Motor Controller
Minimum Input
(applies to AG60,
AG61, AG62, DG1,
DG5, D12C)
Modulation
Minimum Input
(applies to Options
AG8, AG9, AG9H,
AG40, DG2, DG6,
D12B)
Normal
Input
Thermal
Output
Capacity
2-Stage
Minimum
Input
(applies to
AG2, AG3,
AG15,
AG16)
2-Stage with Venter
Motor Controller
Minimum Input
(applies to AG60,
AG61, AG62, DG1,
DG5, D12C)
Modulation
Minimum Input
(applies to Options
AG8, AG9, AG9H,
AG40, DG2, DG6,
D12B)
Natural Propane Natural Propane
Natural Propane Natural Propane
Natural Propane Natural Propane
Feet
Meters
RDH Size
75
RDH Size
100
RDH Size
125
0-2000
0-610
75,000
60,750
52,500
24,750
30,000 18,750
30,000 100,000 81,000
70,000
33,000
40,000
25,000
40,000 125,000 101,250
87,500
41,250
50,000
31,250
50,000
2001-4500 611-1373 67,500
54,675
47,250
22,275
27,000 16,875
27,000
90,000
72,900
63,000
29,700
36,000
22,500
36,000 112,500 91,125
78,750
37,125
45,000
28,125
45,000
Feet
Meters
RDH Size
150
RDH Size
175
RDH Size
200
0-2000
0-610
150,000 121,500
105,000
49,500
60,000 37,500
60,000 175,000 141,750
122,500
57,750
70,000
43,750
70,000 200,000 162,000
140,000
66,000
80,000
50,000
80,000
2001-4500 611-1373 135,000 109,350
94,500
44,550
54,000 33,750
54,000 157,500 127,575
110,250
51,975
63,000
39,375
63,000 180,000 145,800
126,000
59,400
72,000
45,000
72,000
Feet
Meters
RDH Size
225
RDH Size
250
RDH Size
300
0-2000
0-610
225,000 182,250
157,500
74,250
90,000 56,250
90,000 250,000 202,500
175,000
82,500
100,000 62,500 100,000 300,000 243,000
210,000
99,000
120,000
75,000 120,000
2001-4500 611-1373 202,500 164,025
141,750
66,825
81,000 50,625
81,000 225,000 182,250
157,500
74,250
90,000
56,250
90,000 270,000 218,700
189,000
89,100
108,000
67,500 108,000
Feet
Meters
RDH Size
350
RDH Size
400A
0-2000
0-610
350,000 283,500
245,000
115,500 140,000 87,500 140,000 400,000 324,000
280,000
132,000 160,000 100,000 160,000
2001-4500 611-1373 315,000 255,150
220,500
103,950 126,000 78,750 126,000 360,000 291,600
252,000
118,800 144,000 90,000 144,000