Drain Connection; Duct Connection; Sealant / Gasket / Seal Replacement - Greenheck TCB Series Installation, Operation And Maintenance Manual

H
H/2
Drain Connection with UL/cUL 762
FAN OFF
A drain is provided for single-point drainage of water
N = Negative fan pressure (inches W.C.)
and residue. Drains are located 90° from the motor
H = N - 0.5 inches minimum
location to allow for removal of grease and moisture.
When installed correctly, one of the two housing drains
will be located on the bottom. This drain is used to
RECOMMENDED DRAIN TRAP DESIGN remove any accumulated grease and/or cleaning
solutions. Some means for collection of this residue
(TRAP BY OTHERS)
must be provided, either a container directly under the
drain or use an adapter and pipe to carry the residue to
a remote collection point. Remove drain plug prior to
POSITIVE PRESSURE TRAP
connection to grease collection device.
NOTE: A conservative method of trap design is to set
N = Total Static Pressure and P = Total Static Pressure
Positive Pressure Trap
Connect
this end
to fan drain.
H
H/2
FAN OFF
N = Negative fan pressure (inches W.C.)
H = N - 0.5 inches minimum
®
N
H/2
FAN ON
1.25 inch
minimum
N
H/2
FAN ON
Duct Connections
P.O.BOX 410 SCHOFIELD, WISCONSIN 54476-0410
Inline fans shall be connected to the exhaust duct by
TITLE
flanges securely bolted as shown in the figures below
ERS DRAIN SUBMITTAL
(NFPA 96). Flexible connectors shall not be used. Units
supplied with matching companion flanges are to have
this part welded to the ductwork and then bolted to
the fan. Gaskets used in the over-lapping connection
style shall not be positioned in a manner to have direct
contact with the grease.
Sealant Connection
Minimum 1 inch
Fan flange
(25 mm) flange
Sealant rated for
1500°F (815°C)
Over-Lapping Connection
Welded companion flange
Fan flange
1x1x1/4 inch (25x26x6 mm) angle
Gasket rated for
1500°F (815°C)

Sealant / Gasket / Seal Replacement

Repair or replace sealant / gasket as needed.
Replacement sealant or gasket shall be rated for 1500ºF
(815ºC) and shall be grease tight. See Sealant and Over-
lapping Connection figures for proper installation.
Replace access door or bearing cover gasket material
as needed. Gasket material for the access door is 1/2 x
1/2 inch (13 x 13 mm). Gasket for the bearing cover is
1/8 x 1/2 inch (4 x 13 mm).
A mechanical seal, located inside the bearing cover,
is used to keep grease from penetrating into this area.
Contact your Greenheck Representative with the fan's
serial number for appropriate sizing and part numbers
for a replacement seal or gasket material.
DRAWN BY ECO
FAUST
DATE ENG. REF.
VK-ERS
06/29/2009
SUPERSEDES
SCALE
1/8
CAD DRAWING NO. B
1/4 inch (6mm) carbon
or stainless steel bolts
Airflow
1/4 inch (6mm) carbon
or stainless steel bolts
Tubular Centrifugal Fans 7