Page No 24 of 52 Reznor, RHC21 8000 Installation EN May 2021 D301319 Issue 0
Model
RHC21
8045-09
8060-12
8075-09
8100-12
8125M15 8150M18 8175M21 8200M24
CO
2
at High Fire (Throttle) G20
%
8.60
8.60
8.60
8.60
8.60
8.60
8.60
8.60
CO G20
ppm
< 50 ppm
Throttle Turns from Closed
Top Burner
-
N/A
N/A
N/A
N/A
7.0 out
7.0 out
7.25 out
21.0 in
Throttle Turns from Closed
Bottom / Single Burner
-
6.0 out
7.5 out
7.0 out
20.75 in
5.75 out
7.0 out
21.0 in
21.0 in
CO
2
at Low Fire (Offset) G20
%
7.90
7.90
7.90
7.90
7.90
7.90
7.90
7.90
CO G20
ppm
< 50 ppm
Low Fire Offset Pressure G20
Top Burner
Pa
N/A
N/A
N/A
N/A
-8
-20
-29
-33
Low Fire Offset Pressure G20
Bottom / Single Burner
Pa
-12
-22
-18
-28
-16
-37
-26
-33
CO
2
at High Fire (Throttle) G25
%
8.60
8.60
8.60
8.60
8.60
8.60
8.60
8.60
CO G25
ppm
< 50 ppm
Throttle Turns from G20
Top Burner
-
N/A
N/A
N/A
N/A
2.75 out
2.5 out
2.5 out
6.5 in
Throttle Turns from G20
Single / Bottom Burner
-
1.5 out
3.5 out
3.25 out
6.75 in
1.75 out
2.5 out
6.75 in
6.5 in
CO
2
at Low Fire (Offset) G25
%
7.90
7.90
7.90
7.90
7.90
7.90
7.90
7.90
CO G25
ppm
< 50 ppm
Low Fire Offset Pressure G25
Top Burner
Pa
N/A
N/A
N/A
N/A
-8
-20
-29
-33
Low Fire Offset Pressure G25
Bottom / Single Burner
Pa
-12
-22
-18
-28
-16
-37
-26
-33
CO
2
at High Fire (Throttle) G25.3
%
8.60
8.60
8.60
8.60
8.60
8.60
8.60
8.60
CO G25.3
ppm
< 50 ppm
Throttle Turns from G20
Top Burner
-
N/A
N/A
N/A
N/A
2.0 out
2.0 out
2.25 out
5.5 in
Throttle Turns from G20
Single / Bottom Burner
-
1.25 out
3.0 out
2.75 out
5.75 in
1.5 out
2.0 out
5.75 in
5.5 in
CO
2
at Low Fire (Offset) G25.3
%
7.90
7.90
7.90
7.90
7.90
7.90
7.90
7.90
CO G25.3
ppm
< 50 ppm
Low Fire Offset Pressure G25.3
Top Burner
Pa
N/A
N/A
N/A
N/A
-8
-20
-29
-33
Low Fire Offset Pressure G25.3
Bottom / Single Burner
Pa
-12
-22
-18
-28
-16
-37
-26
-33
Flue Gas Temperature High Fire
Δ
T
°C
182
171
154
123
141
135
119
127
Flue Gas Temperature Low Fire
Δ
T
°C
47
36
27
29
23
24
25
27
Flue Pressure at Maximum Flue
Resistance
Pa
5
6
15
20
76
40
14
6
Mass Flow Rate Flue Gases High Fire
G20
kg/h
44.57
57.47
76.73
93.59
123.18
152.24
164.10
189.49
Mass Flow Rate Flue Gases High Fire
G25
kg/h
48.66
58.64
74.90
97.44
125.65
143.83
161.37
190.96
Mass Flow Rate Flue Gases High Fire
G25.3
kg/h
42.41
58.64
72.80
94.32
125.14
139.15
156.76
177.23
Thermal Efficiency High Fire NCV
%
90.54
91.19
91.92
93.64
92.68
92.91
93.83
93.20
Thermal Efficiency Low Fire NCV
%
97.43
98.04
98.50
98.36
98.76
98.68
98.60
98.45
Ignition Controller Program Key Top
Burner
Ω
N/A
N/A
N/A
N/A
15,000
22,000
33,000
6,800
Ignition Controller Program Key
Bottom Burner
Ω
1,000
2,200
3,300
6,800
10,000
22,000
6,800
6,800
Table 11 : Nominal Combustion Values with service door closed
