SIGMA Force Flow Heaters - Manual (Page 3)

2
G ENERAL I NSTALLATION
All units are shipped fully assembled. If the
unit is a fully or semi-recessed model type
then a wall seal trim will be included and
must be installed as per the provided
instructions.
Remove front panel, line up roughed in
piping and position the unit in the desired
wall or ceiling location.
Attach unit to wall or ceiling using the
provided holes in the back panel of the unit.
Piping should always be installed and
connected using good practice and in
accordance with applicable codes.
Wiring should be completed in accordance
with applicable codes. All models are
furnished with a fan control box in the
desired location on the unit. If the speed or
temperature control are to be remote
mounted the junction box must be supplied
by an other.
Once the unit is completely installed a test
run should be performed. If operational
difficulties are experienced, recheck all
wiring connections and power source.
M AINTENANCE
Motors. Motors are a permanent split
capacitor type fitted with self lubricating
sleeve bearings. In order to extend motor life
the bearing should be "recharged" with an
annual lubrication. Use an SAE 10 non
detergent oil applied only in the oiling holes
provided.
Coils. Coils are to be kept clean in order
for proper heat transfer to exist. The
conditions of each operating environment
will change the frequency of cleaning. The
coils can be vacuumed or alternately use the
following methods. Brush the fins on the air
intake side and then place a bag or damp
cloth over the unit discharge. Activate the
unit and the dirt will be trapped in the bag or
cloth. The coil can also be cleaned with high
pressure air which should be blown on the
outlet side of the coil (blowing air on the inlet
will force dirt deeper into the coil).
Blowers. Blowers can be cleaned using
high pressure air.
Filters. Filters should be kept clean to
ensure the proper circulation of air volume
through the unit. The frequency of the
cleaning varies and is dependant upon the
operating environment. As a guide they
should be washed in mild detergent or blown
clean with compressed air every 3 months.
Force Flow Heaters
Installation & Operation Manual
www.sigmaproducts.com Tel: (905) 453-0446 Fax: (905) 453-0675
Rev 3