andrews CWH120/200, Installation, Operation And Maintenance Manual

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MAXXflo Water Heater
27 27 INSTALLATION • SECTION 3
FLUE SYSTEMS
Fig 11
Terminal position description Minimum distance (mm)
Type Cxx flue systems
CWH30,
CWH60
CWH90 CWH120
A Directly below an opening, air brick, opening window etc 300 2,500 2,500
B Above an opening, air brick, opening window etc 300 700 900
C Horizontal to an opening, air brick, opening window etc 300 700 900
D Below a gutter or sanitary pipework etc 75 200 200
E Below the eaves 200 200 200
F Below a balcony or carport roof 200 Not reco
G Above ground, roof or balcony level 300 300++ 300++
H From vertical drain/soil pipework 150 150 150
J From an internal or external corner 300 300++ 300++
K From a surface or boundary facing a terminal 1,200 2,300 2,800
L Vertically from a terminal on the same wall 1,500 2,500 2,500
M Horizontally from a terminal on the same wall 300 700 900
N From a surface or boundary facing a terminal 600 2,600 3,200
P From an opening in a carport (e.g. door, windows) into the building 1,200 Not reco
Q Above a pitched roof 300 400 500
R From a vertical structure on a roof 2,500 2,500 2,500
S Above a flat roof 300 400 500
From any other roof flue terminal 300 700 900
+ Not recommended - Risk assessment required
++ Plume management recommended