Johnson Controls
5513350-JTG-1018
116
Guide Specifications (Continued)
draulic grease fittings [and lube lines extended to the
motor side of the fan]. Fan drives shall be selected
for a 1.5 service factor and anti-static belts shall be
furnished. [Optional spare belts shall be shipped
loose from the factory.] All drives shall be fixed pitch.
Fan shafts shall be selected to operate well below
the first critical speed and each shaft shall be factory
coated after assembly with an anti-corrosion coating.
Air Blender [Optional]
1. Multiple-blade, air-mixer assembly shall mix air to
prevent stratification.
2. Air blenders shall be of the rotary turbulating design
consisting of radially extending blades. Units shall be
completely fixed devices with no moving parts.
3. Static air mixers material shall be 0.080 inches, 5052
H34 alloy aluminum. Static air mixers shall be welded.
4. Simple mixing devices that do not produce expand-
ing discharge with counter rotational mixing shall not
be acceptable.
Filter Section
Draw-Thru Filters
Note:
Select a filter rack, filter media, and transducer if de
-
sired.
1.
Angled Filter Rack -
2-inch filters shall be provided by
others [2-inch throwaway filters shall be provided in an
angled filter rack] [2-inch (MERV 8) pleated filters shall
be provided in an angled filter rack]. Filter efficiencies
shall be rated in accordance with ASHRAE Standard
52.2. All filter holding frames shall be of heavy duty ex
-
truded aluminum construction designed for industrial
applications. All filters shall be side accessible with ac
-
cess doors provided on both sides of the filter section.
2.
Rigid Filter Rack -
2-inch and 12-inch filters shall
be provided by others [12-inch (MERV 14) rigid fil
-
ters with 2-inch (MERV 8) pleated pre-filters shall be
provided] [18-inch (MERV 15) bag filters with 2-inch
(MERV 8) pleated pre-filters shall be provided]. Fil
-
ter efficiencies shall be rated in accordance with
ASHRAE Standard 52.2. All filter holding frames shall
be of heavy duty extruded aluminum construction de-
signed for industrial applications. All filters shall be
side accessible with access doors provided on both
sides of the filter section.
3.
Vertical Filter Rack -
4-inch filters shall be provided
by others. [4-inch (MERV 8) pleated filters shall be
provided.] Filter efficiencies shall be rated in accor
-
dance with ASHRAE Standard 52.2. All filter holding
frames shall be of heavy duty extruded aluminum con-
struction designed for industrial applications. All filters
shall be side accessible with access doors provided
on both sides of the filter section.
4.
Filter Transducer -
A filter transducer shall be pro
-
vided and wired to the rooftop's control panel. The unit
controller shall display the pressure drop across the
filter[s]. Single transducer shall be provided to mea
-
sure pressure drop across both filter banks. [Trans
-
ducers shall be provided to measure pressure drop
across each filter bank].
5.
Differential Pressure Gauge -
A flush mounted,
factory-installed differential pressure gauge shall be
provided to measure pressure drop across both filter
banks. [Flush mounted, factory-installed differential
pressure gauges shall be provided to measure pres-
sure drops across each filter bank.] Manufacturer shall
provide fully functional gauges complete with tubing.
Final Filters
Note:
Select a filter rack, filter media, and transducer if de
-
sired.
1.
Rigid Filter Rack -
2-inch and 12-inch filters shall
be provided by others [12-inch (MERV 14) rigid fil
-
ters with 2-inch (MERV 8) pleated pre-filters] [18-inch
(MERV 15) bag filters with 2-inch (MERV 8) pleated
pre-filters shall be provided]. Filter efficiencies shall
be rated in accordance with ASHRAE Standard 52.2.
All filter holding frames shall be of heavy duty extruded
aluminum construction designed for industrial applica-
tions. All filters shall be side accessible with access
doors provided on both sides of the filter section.
2.
High Efficiency Particulate Air
(
HEPA) Filter Rack -
2-inch and 12-inch filters shall be provided by others
[12-inch (MERV 17) HEPA filters with 2-inch (MERV
8) pleated pre-filters shall be provided]. Filter efficien
-
cies shall be rated in accordance with ASHRAE Stan
-
dard 52.2. All filter holding frames shall be of heavy
duty extruded aluminum construction designed for
industrial applications. All filters shall be front loading
with access doors provided on both sides of the filter
section.