Page No 16 of 52 Reznor, Photon, Installation Manual, EN 2021-04, D301310 Iss 0
I
C33 Wall
C53
Figure 4 Approved appliances Type C
C13 Wall
C33 Roof
Table 1 Flue Diameter and Flue Pipe Lengths
Photon Model
10
20
25
35
45
55
65
70
100
120
Flue Gas Temperature High Fire
Δ
T
°C
161.1
179.9
176.3
182.6
176.9
163.9
170.5
152.8
171.1
146.8
Flue Gas Temperature Low Fire
Δ
T
°C
65.0
71.1
78.7
68.2
74.7
72.8
76.9
75.8
72.1
61.0
Mass Flow Rate Flue Gases High Fire G20
kg/h
7.92
17.48
24.96
29.52
40.08
49.51
60.12
72.41
86.84
98.97
Mass Flow Rate Flue Gases High Fire G25
kg/h
9.12
15.45
25.47
29.01
39.73
55.64
55.72
62.18
97.41
126.10
Mass Flow Rate Flue Gases High Fire G25.3
kg/h
9.61
15.38
24.84
28.29
30.73
52.83
57.64
64.86
101.38 112.72
Flue Pressure at Maximum Flue Resistance
Pa
3
6
70
10
19
18
11
14
23
6
Table 2 Flue Gas Properties
Photon Model
10
20
25
35
45
55
65
70
100
120
Heater socket and flue diameter
mm
80
100
130
Maximum straight length two pipes (combustion air
inlet and flue outlet pipe) with wall or roof terminal
(Type C appliance
m
9.0
Maximum straight length single pipe (flue outlet pipe)
with wall or roof terminal
m
9.0
Equivalent length of 45° elbow
m
0.75
Equivalent length of 90° elbow
m
1.5
Minimum flue length
m
1.0
