andrews WHC56 Installation And Service Manual page 17

VERTICAL FLUE TERMINAL
• Use only the following models of the flue terminals with this unit.
• The M&G Vertical Flue Terminal can be cut to suit the roof.
Flue system installation example
Elbow
Intake pipe
Special
adapter
Flue Precautions
• Use 100mm diameter exhaust pipe.
• Maximum flue length
4 elbow (90 degree) +
7m (exhaust pipe) + Flue Terminal
*Maximum flue length : 12m
• Minimum flue length
1 elbow (90 degree) + Flue Terminal
• Exceeding the maximum flue length is danger-
ous and may result in bad combustion.
• Maximum 90 degree bends not to exceed 4.
• Maximum length must be reduced by 2000mm
for each 90° bend used.
• Maximum length must be reduced by 1000mm
for each 45° bend used.
• If possible, don't install the flue pipe through
any enclosed areas. If necessary, consult
ANDREWS WATER HEATER for clearances.
• Install the flue terminal so that all exhaust is
directed to and all intake air is taken from
outdoors.
hangers
Straight pipe
Exhaust
pipe
Elbow
Main unit
Flue Terminal
hangers
Intake pipe
Special adapter
• Do not store hazardous or flammable sub-
stances near the flue terminal.
• Slope the intake and exhaust pipes at a 1/20
grade up towards the termination.
• Connect the flue pipe firmly so that it will prevent
exhaust gases from leaking.
• Steam or condensed water may drip out of the
flue terminal. Dispose of this condensed water
according to local codes and in order to prevent
injury or property damage.
• If this product will be installed in an area where
snow is known to accumulate,protect the flue ter-
mination from blockage by snow drifts or dam-
age from snow falling off of roofs.
• Support the flue pipe with hangers at intervals.
• Install the flue terminal so that it is easily acces-
sible for maintenance both from the indoors and
the outdoors.
Flue Terminal
Straight pipe
Exhaust pipe
Main unit
15