Table of Contents
Advertisement
F F a a c c t t o o r r y y - - M M o o u u n n t t e e d d U U n n i i t t O O p p t t i i o o n n s s
4. Slide one 2" piece of the vinyl tubing provided onto
the short smoke detector inlet tube which protrudes
out of the back side of the smoke detector. Push this
piece of vinyl tubing onto the inlet tube until it
contacts the end of the plastic extension on the
backside of the smoke detector.
5. Slide the long piece of vinyl tubing provided onto
one leg of the plastic barbed elbow provided. Slide
the other end of this piece of vinyl tubing with the
elbow attached approximately 1" onto the end of
the copper sampling tube installed in the unit's
return air opening. Position the leg of elbow
without the vinyl tubing such that it points toward
the front side of the unit (directly out of the unit
toward the filter access panel).
6. Mount the smoke detector assembly into the unit.
Align the smoke detector (exhaust tube down) with
the holes in the outer panel of the barometric relief
hood and position the smoke detector flush on the
panel.
N N o o t t e e : : On all units there is a hole with a plastic snap
bushing located on the inner vertical side of the
barometric relief hood that the long exhaust tube
must pass through. Be sure that the exhaust tube
is aligned with this hole before positioning the
smoke detector flush on the outer panel of the
barometric relief hood.
7. Secure the smoke detector to the hood with two
#10-16 x 3/4' sheet metal screws provided.
N N o o t t e e : : In order to perform the last part of this operation,
it will be necessary to remove the barometric
relief filter, open the barometric relief damper,
and reach inside through the barometric relief
outlet to access and connect the copper exhaust
elbow to the smoke detector exhaust tube.
8. Connect the leg of the plastic elbow without the
vinyl tubing attached that was installed in Step 5 to
the smoke detector inlet tube pushing it onto the
piece of vinyl tubing attached to the inlet tube.
9. Refer to
"Return Air Smoke Detector 12.5 to 20
Tons," p. 50
for wire connections of return air
smoke detector to the unit wiring harness.
10. This completes the installation of the return air
smoke detector. If the unit's air filter(s) and/or
barometric relief filter were removed to ease
installation of the smoke detector, they need to be
replaced at this time.
Airflow & Sampling
Refer to the instructions provided below regarding unit
airflow to assure that the return air smoke detector will
function properly.
52
I I m m p p o o r r t t a a n n t t : : The return air smoke detector is designed
to shut off the unit if smoke is sensed in the
return air stream. This function is
performed by sampling the airflow entering
the unit at the return air opening. Follow
the instructions provided below to assure
that the airflow through the unit is
sufficient for adequate sampling. Failure to
follow these instructions will prevent the
smoke detector from performing its design
function.
In order for the return air smoke detector to properly
sense smoke in the return air stream, the air velocity
entering the unit must be between 500 and 4000 feet
per minute.
N N o o t t e e s s : :
•
Airflow through the unit is affected by the
amount of dirt and debris accumulated on
the indoor coil and filters. To insure that
airflow through the unit is adequate for
proper sampling by the return air smoke
detector, complete adherence to the
maintenance procedures, including
recommended intervals between filter
changes and coil cleaning, is required.
•
Periodic checks and maintenance
procedures must be performed on the
smoke detector to insure that it will function
properly. For detailed instructions
concerning these checks and procedures,
refer to the appropriate section(s) of the
smoke detector Installation and
Maintenance Instructions provided with the
literature package for this unit.
I I m m p p o o r r t t a a n n t t : : Refer to the service literature provided for
testing and other information about the
smoke detector or if problems are
encountered.
WSHP-SVX015C-EN
Advertisement
Table of Contents
Troubleshooting
