Jandy HI-E2, Инструкция по установке и эксплуатации

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Page 11
ENGLISH
Jandy
®
Pro Series, Hi-E2
®
and Hi-E2R Gas-Fired Heater
|
Installation & Operation Manual
Figure 12. Condensate drain and trap.
Trap
Overfl ow
To
Disposal
Water Level
Pushed Down
Slightly
Water Level
Pulled Up
2"-3"
(50-75 mm)
Condensate
From
Collector
Drain
Condensate From
Vent/Blower Drains
1/4" - 3/8"
(6-10 mm)
Figure 13. Manual Shut-off Valve and Sediment Trap.
of condensate can be produced in an hour. Condensate is
mildly acidic. Before treatment, its “pH” is typically in the
3.5 to 6.0 range.
Handling and disposal of condensate is not complicated,
but it must be done correctly to prevent problems or
complaints. A trap/neutralizer assembly is provided with
the heater to simplify installation. This assembly is easily
installed in the base of the heater. Figure 11 illustrates its
installation and the routing of drain tubes.
To install the condensate assembly, fi rst install the
short length of 5/8" I.D. tubing (Collector Drain) on
the barbed fi tting on the bottom of the condensate
collector. Then drop the condensate tray into the opening
in the base pan of the heater, bending the 5/8" tubing as
necessary to get the tube into the tray. Readjust the 5/8"
tubing so that its lower end is 1/4" - 3/8" above the bottom
of the tray. The tray can be positioned with the outlet fi tting
to the right, as shown in Figure 11, or with the fi tting to the
left, depending on the direction required for condensate
disposal. Connect the piece of 1/2" I.D. tubing to this
outlet fi tting and route it out of the heater through the hole
in the side of the base panel. This tube carries condensate
to the drain. If this disposal tube is routed to the left,
remove the plug button from the hole on the left side of the
base panel and push it into the hole on the right side.
Connect the remaining short piece of 3/8" I.D. tubing to
the barbed tee fi tting in the tubing immediately in front of
the blower. Position this tubing so that its bottom end is
1/4"-3/8" above the bottom of the condensate tray. This
tube provides drainage for the vent duct and blower.
A package of limestone gravel neutralizer is provided with
the condensate assembly. Remove the neutralizer from the
packing and spread evenly throughout the tray and around
the properly placed tubes. Be sure that a limestone pebble
does not plug any of the tubes.
IMPORTANT After placing the limestone neutralizer in
the tray add water until the water level is at the same
height as the overflow, see figure 12. Place the cover
on the tray when this is done.
It is important that there be no sagging sections of tubing
to trap water. Drainage to the trap and out of the trap
to the drain must be assured by continuous downward
routing of these tubes. It may be necessary to elevate
the heater to provide downward routing. The outlet of
the disposal tube must be open to the air. PVC pipe is
recommended for long drain tubes.
If a gravity drain is not available, a condensate pump
must be provided in the fi eld. Suitable condensate pumps
are available commercially at air conditioning equipment
distributors.
Incorrect installation of the condensate assembly or
tubing can result in overfl ow or waterlogging of the vent.
In normal operation, water accumulates in the tray at the
level of the outlet fi tting, and this provides a “water seal”
which accommodates combustion system pressures. Figure
12 illustrates the water seal. Note that water is “pulled”
up toward the condensate collector pan and is pushed
down slightly by the vent/blower drain. If there is no water
seal, air rushes into the collector drain, preventing normal
drainage of condensate water, until vent drainage provides
the seal. See Section 2.12, Start-Up and Adjustment.
The installer must be sure to take whatever measures
are necessary to prevent property damage by condensate
overfl ow. If the heater location is such that this water
can directly or indirectly damage a building, furnishings
or other property, an overfl ow pan or other appropriate
preventative measure should be provided.
2.9 Gas Supply and Piping
Before installing gas piping, check the rating plate on the
heater to be sure that the heater is for use with the correct
(available) gas. Make sure that gas supply pressure is
adequate per the requirements in Table 4.
PIPE
NIPPLE
SEDIMENT TRAP
3 in
(
(