Eco-King HWB-299, Installation And Service Manual

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E93.1801EN171 HWB installation manual 37
NOTICE
10 FLUE GAS AND AIR SUPPLY SYSTEM
General venting.
The water heater has a positive pressure vent system.
The water heater is for either direct vent installation or for installation using indoor combustion air, category IV,
appliance with sealed combustion requiring certain venting systems. All combustion air is drawn from outdoors or
indoor. All products of combustion are vented directly outdoors. The vent, and if applicable air-intake piping, should
be piped to the outdoors. Under no conditions may this appliance vent gases into a masonry chimney. The internal
safety system shuts down the water heater in case the temperature of the flue gasses becomes too high, after
which the appliance will not run until
manually restarted.
Installations must comply with CSA B149.1 and local
requirements.
The front cover
creates an airtight enclosure
making sure air is only supplied by the vent air intake. Therefore,
make sure the front cover always has been placed in its position during operation of the appliance.
Install all horizontal vent components with a minimum angle of 3° downwards in the direction of the
water heater (roughly equal to
1/4 inch per foot or 5 cm per meter).
When not installed accordingly,
it may result in condensate building-up in the vent gas tube, eventually causing component failure.
When using a wall terminal, there is the possible risk of ice building-up on surrounding parts/struc-
tures, because the condensate will freeze. This risk should be taken into account during the design
phase of the heating installation.
Because the flue gases can have a low temperature, the water heater needs to have a high effi-
ciency approved stainless steel or plastic vent system. These materials, including the gaskets,
should be usable for positive pressure vent gas systems.
These parts must be certified for use
at temperatures of minimal 70°C / 158°F (See also warnings below).
10.1.1 V
ENT SIZING
.
Water heater
Intake Air and Exhaust
HWB-299, HWB-399 4"
HWB-499 6"
Increasing or decreasing combustion air or vent piping sizes is not permitted.
Vent connector: used to provide a passageway for conveying combustion gases to the outside. A connector is
provided on the unit for final connection. Vent piping must be supported per the National Building Code, Section
305, Table 305.4 or as local codes dictate.
Connections vent gas (vent) and air supply:
AIR INTAKE
VENT
(FLUE GAS)
NOTICE