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TERMINATION
ELBOW
RODENT SCREEN
(INSTALL INTO
ELBOW)
GROUND LEVEL OR
MAXIMUM SNOW
LINE*
CONDENSATE
This water heater is a condensing unit and requires a drain
to be located in close proximity to allow the condensate
to drain safely. The condensate drains from the unit at
the condensate trap located at the bottom of the unit (see
Figure 22). Condensate from this water heater is mildly
acidic. Please note that some local codes require that
condensate is treated by using a pH neutralizing fi lter
prior to disposal.
Caution must be used to ensure that the drain is free and
clear of debris and will not allow backfl ow through the
condensate tube. Consideration must be given to avoid
freezing of the condensate lines which could result in
excessive build up of condensate inside the water heater.
Waterproof heat tape may be required to prevent freezing
of the condensate lines. Please ensure that the outlet of
the condensate drain does not create a slippery condition
which could lead to personal injury.
To operate properly and prevent exhaust gases from
escaping through the condensate trap, the trap must
contain some water. Before being started for the fi rst time,
water must be added to the trap. Remove the condensate
tube (if installed) and add water to the trap through the
hole for the condensate tube until it fl ows from the hole.
(Re)install the condensate tube.
CONDENSATION WARNING:
THIS WATER HEATER IS A CONDENSING UNIT AND
REQUIRES A DRAIN TO BE LOCATED IN CLOSE
PROXIMITY TO ALLOW CONDENSATE TO DRAIN
SAFELY. THE CONDENSATE DRAINS FROM UNIT AT
THE CONDENSATE TRAP LOCATED AT BOTTOM OF
UNIT.
NOTE: IT IS IMPORTANT THAT THE CONDENSATE
TUBE NOT BE ELEVATED ABOVE THE CONDENSATE
316888-001 Rev. 00 dRaFt Jun 28 245
All manuals and user guides at all-guides.com
NOTE: VENT PIPE MUST BE SUPPORTED EVERY 1.2m (4 ft.). TO PREVENT VIBRATION, USE
ISOLATION PADS WHEN ATTACHING STRAPS TO FLOOR JOISTS, WALLS OR CEILINGS.
Example for calculating equivalent feet.
Section "A" . . . . 0.15m . . (0.5 ft.)
90° elbow . . . . . 2.13m . . (7.0 ft.)
Section B . . . . . 0.31m . . (1.0 ft.)
45° elbow . . . . . 1.21m . . (4.0 ft.)
Section C . . . . . 0.46m . . (1.5 ft.)
45° elbow . . . . . 1.21m . . (4.0 ft.)
Section D . . . . . 4.57m . (15.0 ft.)
Total Equivalent 10.04m (33.0 ft.)
Based on this example use the (fully open) rodent
screen for vent length greater than 20 equivalent
ft. (6.1 equivalent metres).
STRAP
Vent piping must slope up
from heater to termination
a minimum of 3mm (1/8 in.)
rise per 1.2m (4 ft.) of vent
piping
FIGURE 21
TRAP OUTLET (SEE FIGURE 22). CONDENSATE
BUILD-UP WILL BLOCK THE EXHAUST OUTLET,
WHICH WILL CAUSE IMPROPER OPERATION. WITH
SOME INSTALLATIONS IT IS RECOMMEND TO
INSTALL A CONDENSATE PUMP.
NOTE: Barbed fi tting not required if hard piping is used
to drain condensate.
EXHAUST
ELBOW
INSTALLATION OF VENT SYSTEM
Before beginning installation of piping system thoroughly
read the "Vent Pipe Preparation" section of this manual.
If you are installing your system so that it vents through
www.hotwater.com
45°
ELBOW
VENTING
BARBED FITTING
CONDENSATE
TRAP
DRAIN PAN - ROUTE
TO SUITABLE DRAIN
CONDENSATE TUBE -
SLOPE TO SUITABLE DRAIN
NOTE: THE CONDENSATE TUBE
MUST BE BELOW EXHAUST ELBOW.
FIGURE 22
90°
ELBOW
150mm
(6 in.)
MIN.
21
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