Installation; Effect Of Installation On Performance; Ul 762 - Restaurant Exhaust - Greenheck SWB 100 Series Installation, Operation And Maintenance Manual

INSTALLATION

Inspect the unit for any damage and report it to the
shipper immediately. Also, check to see that all
accessory items are accounted for.
Move the fan to the desired location and fasten
securely through mounting holes provided in the base
angles. The unit must be set level (Shimming may be
necessary). Flexible duct connections and vibration
isolators should be used where noise is a factor.
The motor voltage and ampere rating must be
checked for compatibility with the electrical supply
prior to final electrical connection. Supply wiring to the
fan must be properly fused and conform to local and
national electrical codes.
The discharge is factory set as specified by customer
order, however, it can be rotated to other discharge
positions in the field if necessary. Removal of the
housing bolts allows the discharge to be rotated to
the clockwise positions below (Fig. 1). For TAD, BD
and BAD discharge positions a portion of the frame
angle must be removed.
VIEWED FROM DRIVE SIDE OF THE FAN
CW BH CW BAU
CW TH CW TAD
Clockwise rotation shown. Counterclockwise
discharge positions are a mirror image of those
shown. The SWB 100 Series is clockwise rotation
only. Fan rotation is always viewed from the drive
side of the housing.
INSTALLATION OF UL 762 LISTED FANS FOR RESTAURANT EXHAUST
The UL 762 listing for restaurant exhaust is available on SWB 200 Series fan sizes 10-36 with a weatherhood. UL
762 fans are listed for a maximum operating temperature of 375°F and include a bolted access door and 1" drain
connection. An outlet guard is
strongly recommended when the
fan discharge is accessible. An
upblast discharge is recommended.
The fan discharge must be a
minimum of 40" above the roof
line and the exhaust duct must
be fully welded to a distance of 18"
above the roof surface.
This drawing is for dimensional
information only. See the latest
edition of NFPA 96 Standard for
Ventilation Control and Fire
Protection of Commercial
Cooking Operations for detailed
installation instructions, materials,
duct connections and clearances.
CW UB CW TAU
CW DB
CW BAD
Fig. 1
40"**
** Per NFPA 96 the fan discharge
must be a minimum of 40"
above the roof surface.
EFFECT OF INSTALLATION
ON PERFORMANCE
Restricted or unstable flow at the fan inlet can cause
pre-rotation of incoming air or uneven loading of the
fan wheel, yielding large system losses, increased
sound levels and structural failure of the fan wheel.
Free discharge or turbulent flow in the discharge
ductwork will also result in system effect losses.
The examples below show the system layout and inlet
and discharge configurations which can affect fan
performance.
Good
Good
Good
Poor
Distance should be at
least 1/2 dia.
Poor
Upblast Discharge
Weatherhood
A 96 the duct must be
3
Poor Poor
Good
Poor
Not greater than 60°
included angle
7° Max.
Good Good
Poor Good
Good
Poor
18"*
Duct
From
* Per NFP
Kitchen
all welded construction to a
Hood
minumum distance of 18"
above the roof surface.
ONE FAN DIA.