A.O. Smith HYB-90N, Инструкция по установке и эксплуатации

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316888-001 Rev. 00 dRaFt Jun 28 245 www.hotwater.com 21
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
TERMINATION
ELBOW
RODENT SCREEN
(INSTALL INTO
ELBOW)
GROUND LEVEL OR
MAXIMUM SNOW
LINE*
STRAP
150mm
(6 in.)
MIN.
90°
ELBOW
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).
45°
ELBOW
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.
FIGURE 21
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 back
fl 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
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.
CONDENSATE TUBE -
SLOPE TO SUITABLE DRAIN
CONDENSATE
TRAP
VENTING
DRAIN PAN - ROUTE
TO SUITABLE DRAIN
EXHAUST
ELBOW
NOTE: THE CONDENSATE TUBE
MUST BE BELOW EXHAUST ELBOW.
BARBED FITTING
FIGURE 22
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