Page No 16 of 52 Reznor, Photon, Installation Manual, EN 2024-01, D301310 Iss 5
I
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 ΔT °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 ΔT °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
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