Installation & Maintenance Data IM 502-3
Group: Unit Ventilator
Part Number: 106196501
Date: April 2000
Model AED, AEQ AAF-HermanNelson® Classroom Unit Ventilator
©2000 AAF-HermanNelson IM 502-3 (Rev. 4/00)
®
Wall Sleeve
Receiving Shipment
Before signing the freight bill, be certain that all items have
been received and that there is no visible damage. Note any
shortages and any damage on all copies of the freight bill.
Each Model AEQ unit has been carefully inspected and
operated at the factory to verify proper performance. It has
been packed in a sturdy carton, was checked by the carrier
during loading for shipment, and should arrive in perfect
condition. However, if there is damage or any shortages, the
purchaser is responsible for filing the necessary claims with
the carrier. Concealed damage which was not discovered
until after unloading should be reported to the carrier within 15
days after receipt. To help avoid concealed damage, the air
conditioners must be shipped, handled and stored right-side
up. A formal claim for any shortage or damage must be filed
with the carrier within nine (9) months after delivery.
Table 1. (See note below)
UNIT UNIT
MODEL DEPTH WT., LB. HEIGHT WIDTH
AEQ-24, AEQ-30
AEQ-36, AEQ-42
AEQ-48, AEQ-54
28 103 31 885 28 84
28 103 31 975 28 96
28 115 31 1075 28 108
AB
Figure A.
A
IMPORTANT:
1. Move only one unit at a time.
2. Do not drop unit.
3. Store in a clean and dry environment.
4. Lift only from designated end.
5. May be stacked maximum of 2 high.
6. To remove unit from skid, follow instructions
under "Uncrating Unit" on page 3.
SHIP WALL SLEEVE
39"
B
See Table 1 for unit weights and dimensions. Forklift type
vehicles may be used to unload and move the unit. When
using a forklift, it is important that the unit remain banded to
its skid and be lifted only from the end designated on the
carton. See Figure A. Forks on forklift should be a minimum of
36" long. Move only one unit at a time. Do not drop unit.
Storage
If an air conditioner must be stored prior to installation, find a
clean, dry, protected, preferably heated area for storage until
the equipment is needed. Keep within the carton during
storage or handling.
Preliminary Installation
The location and installation of each Model AEQ unit should
be carefully arranged to ensure convenient service access for
maintenance and, if necessary, removal of the unit.
If the unit has been in storage in an unheated area, care must
be taken that the refrigerant circuit has had time to reach
proper ambient temperature before attempting operation.
The unit consists of two major sections: (1) the unit proper and
(2) the wall sleeve. The wall sleeve contains the unit main
power disconnect switch located in the wall sleeve junction
box. All field connections are made inside the wall sleeve
junction box (see page 8).
The Model AEQ unit is designed to be installed through an
outside wall. Installation will require that the wall sleeve be
removed from the unit and installed before the unit is installed.
See "Uncrating Unit" section.
On many jobs, the louver and wall sleeve are shipped ahead
of the unit itself. Installation instructions for these components are shipped with the individual components, as well as
being included in this publication.
Uncrating Unit (Figure A)
The unit should be moved to the location at which it is to be
installed before uncrating. Check tagging on unit carton to
confirm that the unit is correct for the location. The carton is
imprinted with the AAF-HermanNelson trademark which is the
"front" or room side of the unit. The end of the carton marked
"Truck from this end" should be on the right-hand side when
facing the front of the carton.
NOTE: All dimensions are approximate only and are subject to change
without notice. Refer to approved submittal prints for rough-in details
and construction purposes and for recommended wall opening size.
Page 2 / IM 502
Wall Opening Preparation
An opening in the outside wall is required to accommodate the
wall sleeve and louver. The wall opening must be of sufficient
size to allow proper, yet snug, fit of the louver and will depend
on the type of wall. If the louver is to be installed in a masonry
wall, there should also be a lintel to support the wall above the
wall sleeve and louver. The opening should be sleeved to
prevent moisture from seeping into the wall interior. Refer to
approved submittal prints for recommended wall opening
size.
Remodeling Existing Buildings
If the Model AEQ unit is to be installed in an existing classroom, an opening must be cut in the outside wall to accommodate the wall sleeve and louver. This is accomplished as follows:
First, the outside of the wall is cut with a carborundum or other
suitable blade as shown in Figure B. This opening should be
slightly larger than the size of the louver supplied with the unit.
Figure B.
The inside wall is then knocked out in the area cut for the wall
sleeve as shown in Figure D. If the wall consists of concrete
block with brick (or other) veneer, and the louver opening is
smaller than the opening the wall sleeve (which is to be
recessed), be careful not to knock out more veneer than is
necessary.
Figure D.
The completed opening is shown in Figure E. After the opening is finished, a lintel must be installed above the opening in
masonry walls to support the remaining block and brick.
Next, the inside of the wall is cut as shown in Figure C. If any
portion of the wall sleeve is to be recessed into the wall, the
opening must be large enough to accommodate the wall
sleeve (see Table 1, page 2). It is also possible to have a wall
opening smaller than the wall sleeve; in which case, the sleeve
will be nonrecessed and all of the unit will remain in the room.
Other variations are also possible such as dual louvers, etc.
Figure C.
Figure E.
New Buildings
In new construction, if any portion of the wall sleeve is to be
recessed into the wall, the opening must be large enough to
accommodate the wall sleeve (see Table 1, page 2). For
smaller wall openings the wall sleeve will be nonrecessed and
all of the unit will project into the room. In all cases the bottom
of the wall opening must be at the same height as the floor line.
A lintel must be installed above the opening in masonry walls
to support the block and brick.
IM 502 / Page 3
Wall Sleeve Installation
a
a
a
a
a
General — The wall sleeve must be installed before the unit
can be placed. The wall sleeve measures 85", 96" or 108"wide
by 28" high and may be recessed into the wall up to 11
depth.* Consult the approved AAF-HermanNelson submittal
drawings for the job to determine the proper amount of
recess,if any, and recommended wall opening size.
The wall sleeve is attached to the unit chassis (weld studs)
using 4-nuts and washers, see figure 1.
The AAF-HermanNelson wall sleeve and louver design is
based on a "wet sleeve" concept. In brief, this means the
design accommodates the penetration of some moisture into
the rear section of the wall sleeve with the provision being
made for containment and disposal of this moisture to the
outdoors.
It is necessary for that portion of the opening between the
wall sleeve and the louver to be completely enclosed by the
installer to prevent air and water leaks into the building.
Recessed and Nonrecessed Applications
The installing contractor shall do the following:
1. Make sure there is a masonry lintel supporting the wall
above any masonry opening.
2. Frame and seal air- and watertight all openings not enclos-
ed by the wall sleeve.
3. Refer to relevant figures for details of required sealing:
Figure 2 for all applications.
Figures 3 and 4 for recessed wall sleeve applications.
Figures 5 and 6 for nonrecessed wall sleeve applications.
4. Seal watertight both ends and top of wall sleeve to building
at rear flange of wall sleeve.
5. Seal watertight bottom of wall sleeve at rear "D" seal to
building and pitch toward louver bottom channel. Also
fasten cross channel to floor through holes with fasteners
(by others). See Figure 2.
6. The louver must be installed with the drain notches
located at the bottom and the bird screen located on
the unit side. Openings between notches must be free
of mortar or other foreign material for water removal. Refer
to IM 449 for specific details regarding louver installation.
7. Apply rubber stripping or sealant material (by others)
across full length of wall sleeve splitters.
8. If the louver does not butt up against the wall sleeve:
a. Fabricate a horizontal air splitter from galvanized
steel, redwood or some other suitable weather resistant material. The width of the air splitters is determined
by the width of the wall opening. The depth of the air
splitters is determined by the distance between the
louver horizontal splitter and the wall sleeve splitters.
b. The horizontal air splitters should have a 1" diameter
drain hole approximately 6" from each end.
c. Install the horizontal air splitters by fastening to the
wall sleeve splitters.
d. Apply rubber stripping or sealant material (by
others) across full length of horizontal air splitters
to seal against louver.
9. Permanently seal any remaining air leaks so that, when
finished:
Figure 1.
Chassis
Wall Sleeve
3
⁄8" in
a. There is an airtight separation between the condenser
inlet air, condenser discharge air and the outdoor air
inlet;
b. There are no air leaks around the perimeter of the wall
sleeve where it adjoins the wall.
Recessed Applications (See Figures 3 and 4)
The installing contractor shall do the following:
1. Place the wall sleeve into the wall opening and recess it
the amount shown on the approved AAF-HermanNelson
submittal drawings.
2. Level the wall sleeve horizontally and plumb the wall sleeve
vertically.
3. Fasten the wall sleeve securely in place using fasteners
through the two knockouts provided on each end.
4. Caulk or seal any space between the wall sleeve and the
wall on both the room side and the outdoor side.
Nonrecessed Applications (See Figures 5 and 6)
The installing contractor shall check the following before
proceeding:
The wall behind the unit should be smooth and plumb.
The seals on the rear of the unit will take up the small ir-
regularities of normal masonry construction.
Furring strips must be installed on irregular walls or walls
with mullions in order to provide a flush surface for the unit
to seal against.
Any moldings at the floor/wall line should be omitted
behind the unit.
The installing contractor shall do the following:
1. Apply sealant (by others) to bottom edge at rear of unit
top and both end flanges on rear of wall sleeve to provide
watertight seal to interior wall of building.
2. Level the wall sleeve horizontally, and plumb the wall
sleeve vertically.
3. Fasten the wall sleeve securely in place by:
a. Securing it to the floor through the two (2)
holes in the turned out bottom flanges of the wall
sleeve at each end, and/or:
b. Securing it to the wall through the two (2)
diameter holes in the turned out vertical flanges of the
wall sleeve at each end.
4. a. Panel wall applications should have the wall opening
sleeved to prevent moisture from seeping into the wall
interior.
b. If the panel wall is less than 2
should be installed flush to the interior wall and be
allowed to extend to the outside as required.
5. Seals on rear of unit must be compressed to provide a
watertight seal after installation is complete.
Figure 2. Cross Section Detail of Bottom of
Fasten cross channel to floor
thru 1⁄4" holes with appropriate
fasteners (by others.)
7 fasteners - AEQ 24, 30
8 fasteners - AEQ 36, 40
9 fasteners - AEQ 44, 48, 54
Wall Sleeve & Intake
A "D" shaped seal is
provided at the bottom
rear of the Wall Sleeve
to provide a watertight
seal to the bottom of
the unit when installed.
Bottom of Wall Sleeve
Cross Channel
1
⁄4" thick, the wall louver
3
⁄8" diameter
3
⁄8"
Seal both ends and top of
Wall Sleeve to building,
watertight at rear flange.
Bottom channel
of Louver
3
⁄16"
Seal watertight bottom of Wall Sleeve at rear "D" seal
to building and pitch toward bottom channel of louver
as shown.
Page 4 / IM 502
*Unit may also be installed with the full 28" deep cabinet projecting into the room.
IMPORTANT: Opening under Louver must be
free of foreign material for water removal.
CAUTION: Sleeves furnished for use with optional heated rear drain will have an electric cord installed along
the length of the wall sleeve splitter. Avoid screw penetration or drilling into this cord when
installing the horizontal air splitter. (Model AEQ Only)
Figure 3. Rear View of Recessed Wall Sleeve With Horizontal Air Splitters.
By Others. Wall Sleeve must
be sealed watertight at top and
both ends at location shown.
By Others. Seal Horizontal
Air Splitters to building at
both ends.
By Others. Seal both ends of
opening between Wall Sleeve
and Louver.
IMPORTANT NOTE:
By Others: Attach Horizontal Air Splitters to Wall Sleeve
Splitters as shown. Splitters to have 1" dia. drain hole
approx. 6" from each end.
Wall Sleeve Splitter(s)
(See Caution Above)
"D" Seal
By Others. Wall Sleeve must be sealed
watertight at bottom at location shown.
Refer to cross section detail of bottom
of Wall Sleeve and Louver.
(Figure 2.)
Seal Horizontal Air Splitter(s)
to Louver. (By Others)
3
⁄16" Under Intake must be free for water run-off. INTAKE MUST
STAND ON EMBOSSED FEET LOCATED ON BOTTOM.
By Others. Building must be sealed between Wall
Sleeve and under Louver for water run-off. Pitch
toward Louver.
Condenser discharge
Condenser inlet
Outdoor air inlet
By Others. Louver must be sealed
watertight at top and both ends.
Figure 4. Rear View of Recessed Wall Sleeve Without Horizontal Air Splitters.
By Others. Wall Sleeve must
be sealed watertight at top and
both ends at location shown.
By Others. Seal Horizontal
Air Splitters to building at
both ends.
Wall Sleeve Splitter(s)
(See Caution Above)
"D" Seal
By Others. Wall Sleeve must be sealed
watertight at bottom at location shown.
Refer to cross section detail of bottom
of Wall Sleeve and Louver.
(Figure 2.)
IMPORTANT NOTE: By Others. Seal
Louver to Wall Sleeve at top and bottom Wall Sleeve Splitters, and ends.
3
⁄16" Under Intake must be free for water run-off. INTAKE MUST
STAND ON EMBOSSED FEET LOCATED ON BOTTOM.
By Others. Building must be sealed between Wall
Sleeve and under Louver for water run-off. Pitch
toward Louver.
By Others. Louver must be sealed
watertight at top and both ends.
IM 502 / Page 5
CAUTION: Sleeves furnished for use with optional heated rear drain will have an electric cord installed along
the length of the wall sleeve splitter. Avoid screw penetration or drilling into this cord when
installing the horizontal air splitter. (Model AEQ Only)
Figure 5. Rear View of Nonrecessed Wall Sleeve With Horizontal Air Splitters.
By Others. Apply sealant (by others) to bottom edge of unit (not
shown) and to top flange and both end flanges of wall sleeve (as
shown.) This must provide a watertight seal to the wall of the
building.
By Others. Seal Horizontal
Air Splitters to building at
both ends.
By Others. Seal both ends of
opening between Wall Sleeve
and Louver.
IMPORTANT NOTE:
By Others: Attach Horizontal Air Splitters to Wall Sleeve
Splitters as shown. Splitters to have 1" dia. drain hole
approx. 6" from each end.
Wall Sleeve Splitter(s)
(See Caution Above)
Seal Horizontal Air Splitter(s)
to Louver.
"D" Seal
By Others. Wall Sleeve must be sealed
watertight at bottom at location shown.
Refer to cross section detail of bottom
of Wall Sleeve and Louver.
(Figure 2.)
3
⁄16" Under Intake must be free for water run-off. INTAKE MUST
STAND ON EMBOSSED FEET LOCATED ON BOTTOM.
By Others. Building must be sealed between Wall
Sleeve and under Louver for water run-off. Pitch
toward Louver.
Condenser discharge
Condenser inlet
Outdoor air inlet
By Others. Louver must be sealed
watertight at top and both ends.
Figure 6. Rear View of Nonrecessed Wall Sleeve Without Horizontal Air Splitters.
By Others. Apply sealant (by others) to bottom edge of unit (not
shown) and to top flange and both end flanges of wall sleeve (as
shown.) This must provide a watertight seal to the wall of the
building.
By Others. Seal both ends of opening
between Wall Sleeve and Louver.
Wall Sleeve Splitter(s)
"D" Seal
By Others. Wall Sleeve must be sealed watertight at bottom at location
shown. Refer to cross section detail of bottom of Wall Sleeve and Louver.
(Figure 2.)
IMPORTANT NOTE: By Others. Seal
Louver to Wall Sleeve at top, Wall
Sleeve Splitters and ends.
3
⁄16" Under Intake must be free for water run-off. INTAKE MUST
STAND ON EMBOSSED FEET LOCATED ON BOTTOM.
By Others. Building must be sealed between Wall Sleeve and under
Louver for water run-off. Pitch toward Louver.
By Others. Louver must be sealed
watertight at top and both ends.
Page 6 / IM 502
Figure 7.
Louver
Blade
Bottom
Flange
(Drain Holes)
Detail of
Notches
Typical Wall Louver
Bird Screen
Fasteners
Demountable
Louver Section
Drain Notch
At Bottom
Louver Installation
Factory Mounted
Bird Screen
Information
Labels
Frame
Optional Flanges
Splitter Lines Up With
Wall Sleeve Splitter
Optional Factory
Mounted
Exterior Grille
Mechanical Fasteners
(Number Required Varies
With Size of Louver)
28"
(711 mm)
14" ±1⁄8"
Wall Intake
Louver & Grille Detail
21⁄2"
(63.5 mm)
+
+
+
+
+
+
+
+
+
11⁄4"
Optional Flange
See Louver
Dimensions
++
+
"W "
+
+
7
⁄8"
The standard louver is an aluminum, vertical, divided blade
design complete with bird screen. This louver is also available
with flanges and/or with a heavy-duty exterior lattice grille.
1. Figure 7 shows a detail of a typical louver. Before installation, carefully examine the louver and note the location of
the bird screen and the notches (drain holes). The louver
must be installed with the notches at the bottom and the
bird screen toward the unit.
2. Measure the opening to be sure there is adequate clearance for the louver around the sides. Observe the opening
in relation to the wall sleeve and unit. For proper unit
operation, the louver must be centered left to right and top
to bottom to the wall sleeve. If the louver is of such a
dimension that it extends above, below, or beyond the wall
sleeve, then these areas must be blocked off airtight (see
Figure 8).
3. If the wall sleeve does not extend into the wall far enough
to meet the louver, field fabricated splitter(s) must be
provided. The splitter(s) need to extend far enough to
engage the louver in order to form a proper seal.
4. Check to see if the horizontal divider on the louver is the
same height as the horizontal splitter of the wall sleeve.
The louver consists of a frame, which must be permanently
mounted in the wall, a demountable center louver section
to allow service access to the rear of the unit. To install the
louver in the opening, the demountable center section
must be in place. This will insure that the frame remains
square during installation.
6. Before installing the louver in the opening, place a heavy
bead of caulk along the top and two sides of the frame that
come in contact with the walls of the opening. Use a
flexible, waterproof caulk such as silicone.
7. Once the louver has been placed in the opening, further
mechanical fastening may be desired or required. Fasten
in a manner appropriate to the installation. Care must be
taken if fasteners are to be placed in the frame. If this is
necessary, remove the demountable center section by
removing the screws that hold it in place. Drill holes in the
desired locations and fasten with flat head screws. Be sure
these screws do not interfere with the reinstallation of the
demountable section. Shims must be placed between the
frame and the wall so it won't be distorted. After the frame
Louver Dimensions
USED WITH QUANTITY OF LOUVER
AEQ UNIT SIZE LOUVERS/UNIT SIZE (H X W)
024 or 030 2 28" X 42"
036, 040 2 28" X 48"
044, 048, or 054 2 28" X 54"
024 or 030 1 28" X 84"
036 or 040 1 28" X 96"
044, 048 or 054 1 28" X 108"
Figure 8.
Exaggerated oversize
louver or wall opening.
Unit Wall
Sleeve
Shaded area of louver must
be blocked off & made airand watertight, by installing contractor.
has been satisfactorily fastened, reinstall the demountable
center section and secure with fasteners provided.
Once the frame and louver assembly has been installed,
run a bead of caulk around the outside perimeter of the
frame to seal it watertight. Caution: Do not plug the weep
holes in the bottom of the louver.
Louvers With Flanges
1. If the louver is supplied with flanges, follow steps 1 through
6 above. Additionally, place a bead of caulk on the inside
of the top and side flanges that come in contact with the
building facade. Do not caulk the bottom flange.
2. Place the louver in the opening and push it tight against the
building. Fasten it to the exterior of the building using
appropriate fasteners for the installation.
3. Seal the top and two sides with waterproof caulk to make
it weathertight. Do not seal the bottom flange. To do so
may trap water behind the flange.
IM 502 / Page 7
Electrical Connections
All field wiring should be in accordance with the National
Electric Code and applicable local codes.
Refer to the wiring diagram furnished with the unit to determine electrical connections required.
Refer to Figure 9 for stub-up locations. Refer to pages 12
through 14 for main power connections and field wired controls, if any.
Check nameplate to verify power supply is correct.
Figure 9. Wall Sleeve With Electric Stub-up From Bottom or Side.
Whenever the electric stub-up is brought in through the floor
within the confines of the wall sleeve and any portion of the
wall sleeve is recessed into the wall, the conduit must be flush
with the floor to permit installation of the wall sleeve. Sufficient
space must be left around the conduit to permit the attachment of continuing conduit after the wall sleeve is installed.
For concrete slabs, it is recommended that this be accomplished either by sleeving the conduit or by recessing a
junction box into the slab.
2.5/1.75" Dia. Knockout
3.0/2.0" Dia. Knockout
Wall Sleeve
Conduit (by others)
Rear edge of wall sleeve
2.5/1.75" Dia. Knockout
3.0/2.0" Dia. Knockout
Wall Sleeve
.875" Dia. Knockouts (3)
SW1-Main Power Nonfused “On-Off” Switch (AAF-HermanNelson)
Safety Precaution: Reverse this cover when unit is
removed from wall sleeve to cover opening in the
end of switch box.
Wall Sleeve Junction Box
5
/8" x 35/8" opening (for main power wiring from wall
sleeve to chassis). Field connection by others.
Control receptacle with plug-in disconnect (AAFHermanNelson). Leads are provided for wire nut
connection to all remote controls.
Stub-up from
bottom must be
confined in this area.
1
/4"
6
5"
51/2"
.875" Dia. Knockouts (3)
1
/2"
SW1-Main Power Nonfused “On-Off” Switch (AAF-HermanNelson)
Right End
Of Unit
Safety Precaution: Reverse this cover when unit is
removed from wall sleeve to cover opening in the
end of switch box.
Wall Sleeve Junction Box
Whenever the electric stub-up is brought in
through the floor within the confines of the wall
sleeve, and any portion of the wall sleeve is
recessed into the wall, the conduit must be flush
with the floor to permit installation of the wall
sleeve. Sufficient space must be left around the
conduit to permit the attachment of continuing
conduit after the wall sleeve is installed. For
concrete slabs, it is recommended that this be
accomplished either by sleeving the conduit or by
recessing a junction box into the slab.
Conduit (by others)
Rear edge of wall sleeve
Page 8 / IM 502
5
/8" x 35/8" opening (for main power wiring from wall
sleeve to chassis). Field connection by others.
16"
1"
9"
5"
Control receptacle with plug-in disconnect (AAFHermanNelson). Leads are provided for wire nut
connection to all remote controls.
Stub-up through side must be confined to this
area: cut in field. Opening must be carefully
prepared and gasketed for air tightness.
Right End
Of Unit
Note: These are general instructions. Refer to the AAFHermanNelson submittal drawings for specific dimensions,
unit arrangement, stub-up locations, recommended wall opening size, etc.
Unit Placement
Before Moving Unit Up To Wall Opening:
1. Confirm unit is correct for the location.
2. Complete the installation of the wall sleeve and air intake
louver in accordance with the instructions on pages 4
through 9.
3. For nonrecessed applications, inspect the field applied
elastic tape to make sure it will seal tightly to prevent air
leaks after unit is installed.
4. Check room air and condenser fan bearings to be sure they
are secure (Figures 10 and 12).
5. Check room air and condenser fan shaft coupling setscrews to be sure they are tightened securely to both
motor shaft and fan shaft.
6. Rotate the room air and condenser fans to be sure they
rotate freely and quietly.
7 Check fan wheel setscrews for tightness.
8. Remove any debris from inside the unit.
Setting the Unit:
Slide the unit up to the wall sleeve aligning the four threaded
studs (Figure 13) on the wall sleeve with the holes on each end
of the unit. Sliding of this unit to the wall can be made easier
with the assistance of Caster Kit P/N - 105629001. A piece of
cardboard placed under the unit will make this job easier and
prevent marring the floor. (Do not leave cardboard under unit
after installation.) The wall sleeve mounting studs should slide
through the holes in the unit. Place the washers over the
threaded studs and tighten the mounting nuts. Do not draw
the nuts up as tight as possible as they may distort the unit and
loosen the caulking and wall sleeve from their position. If an
adapter collar is used, make sure that the unit, adapter collar
and wall sleeve all line up properly.
Figure 10.
ROOM AIR FAN
SHAFT BEARING
OIL CUP
Figure 11.
Oil Here
Caution:
Failure to follow these instructions may rack the
unit which can cause the fan or unit to vibrate
noisily on startup and appear to be in need of fan
balancing. For quiet, smooth unit operation it is
important that the unit be square, level and the
base solidly supported by the floor, using shims
where necessary due to uneven construction in
order to prevent distortion of the cabinet. It is
Defrost Condenser Drain Piping
It is strongly recommended that the condensate from the
heating defrost cycle be disposed of into a building condensate drain. See Figure 14, page 10 for details. If a building
condensate drain is not used, and the drain line is exposed to
freezing temperatures, adequate freeze protection must be
furnished.
Oiling
Do not attempt to operate the unit fans until the room air fan
shaft bearing has been oiled. Use a high grade SAE 20 or 30
nondetergent oil. A few drops are sufficient. Do not over oil.
Refer to Figure 10 for oil point. The fan motor does not require
Figure 12.
Figure 13.
CONDENSER
FAN SHAFT
BEARING
IM 502 / Page 9
Optional Internal Heating Condensate Disposal System
(Drainless)
As an option, a "drainless" Model AED unit can be provided.
This option has a built-in, automatically controlled internal
condensate disposal system that eliminates the need for a
condensate drain. This method of disposing of the heating
condensate eliminates potential damage from freezing of
condensate and produces beneficial room humidification.
If neither a floor drain (shown below) nor a "drainless" Model
AED unit is used, AAF-HermanNelson assumes no respon-
sibility for any damage that may be caused from freezing
condensate. Whenever the drain line is exposed to freezing
temperatures, adequate freeze protection must be furnished
by others.
Figure 14. Heating Condensate Disposal into Building Drain System
Unit End
Compartment
Left End of Unit
(less end of panel)
ROOM DIMENSION DIMENSION
PROJECTION “A” “B”
IN. MM IN. MM IN. MM
165⁄8 422 1 25.4 2 50.8
195⁄8 498 4 102 5 127
217⁄8 556 61⁄4 159 71⁄4 184
28 711 123⁄8 314 133⁄8 340
From Wall To End of
(22.2 mm) O.D. Cooper
Drain Tube (by AAF)
Floor / Wall Line
"B"
7
/8"
1
8
/2"
(216 mm)
"A"
7
(194mm)
11
1
(292mm)
⁄
2
5
"
⁄
8
Drain tube by others.
(Drain tube must not interfere with
the damper linkage or caster.
Tube must pitch down and must
be kinked.
"
3
"
⁄
4
10
(264mm)
Building drain must be flush with
floor in area shown to permit unit
to be installed and removed.
Page 10 / IM 502
End Panel Assembly
The final step of unit installation is attaching the end panels.
End panels are required unless the unit has adjoining matching cabinets.
1. Refer to Figure 15 for 1 " thick end panel. Attach two (2)
Tinnerman nuts to the top edge of the end panel and two
(2) to the bottom end of the unit. Align the end panel with
the front and top edges of the unit. Attach end panel to the
5
unit using four (4)
⁄32" hex socket head fasteners provided.
2. Refer to Figure 15 for 6" thick end panel.
a. Position bracket (YC1934) on wall so angle is 5" from
end of unit and near bottom.
Figure 15. 1" End Panel
b. Mark and drill required hole for device to fasten bracket
to wall (not included).
c. Attach bracket to wall.
d. Attach two (2) Tinnerman nuts to the top edge of the end
panel and one (1) to the bottom front of the end frame.
e. Align the end panel with the front and top edges of the unit.
5
⁄
Attach end panel to the unit using three (3)
" hex socket
32
head fasteners provided. Bracket should prevent move-
ment of panel toward the unit when pressure is applied to
the end panel.
Figure 15. 6" End Panel
Bracket
YC 1934
End of Unit
IM 502 / Page 11
Field Wiring Controls, Maximum Outdoor Air Unit
Connector Located in Wall Sleeve Junction Box - Right End
YEL
36
37
BRN
Factory Wiring
Furnished
Only As Required
BLK
WHT
RED
GRN
ORG
BLU
PNK
GRY
904A
910
911
For Further
Information
See Appropriate Field
Wiring Detail
Remote Humidity
Sensor Wiring
Day/Night Changeover Control
(Stand-Alone Units Only)
Control
Receptacle
In Wall Sleeve
Junction Box
YEL
36
37
BRN
BLK
WHT
RED
GRN
ORG
BLU
PNK
GRY
Day/Night
Changeover
(4VA Inrush)
Energize To
Put Unit In
Night
Mode
Control Receptacle
Field Connection
By Others (Not AAF-HermanNelson)
To The Load Side Of SW-1.
[(2) Wires Per Pole If Unit
Has Electric Heat]
SW-1 - - Main Power “On - Off” Switch
Master/Slave Wiring
Attach Wires From Unit To Unit In Daisy
Chain Fashion, In Any Order. See Chart 1
For Correct Wire/Line Voltage Combination.
Shields Are To Be Grounded In Each Unit.
YEL
36
37
BRN
BLK
WHT
RED
GRN
ORG
BLU
PNK
GRY
Control Receptacle
In Wall Sleeve
Junction Box
First Unit
BLU
PNK
GRY
Ground
1
2
3
SW-1
L1
Main Power Supply
(Omit L3 For Single
L2
Phase Applications)
L3
Field Wiring
Network Wiring
Attach Wires From Unit To Unit In Daisy
Chain Fashion. In Any Order, See Chart 2
For Correct Wire/Line V oltage Combination.
Shields Are To Be Grounded In Each Unit.
YEL
36
37
BRN
BLK
WHT
RED
GRN
ORG
BLU
PNK
GRY
Control Receptacle
In Wall Sleeve
Junction Box
First Unit
BLU
PNK
GRY
Ventilation Lockout Control
YEL
36
37
BRN
Control
Receptacle
In Wall Sleeve
Junction Box
BLK
WHT
RED
GRN
ORG
BLU
PNK
GRY
Exhaust Fan Interlock
YEL
36
37
BRN
Control
Receptacle
In Wall Sleeve
Junction Box
BLK
WHT
RED
GRN
ORG
BLU
PNK
GRY
Vent Lockout
(4VA Inrush)
Energize
To Close The
Outdoor Air Damper
Exhaust Fan
Interlock
(4VA Inrush)
Energize To Open
Outdoor Air
Damper
Control Receptacle
In Wall Sleeve
Junction Box
Additional Unit
Control Receptacle In
Wall Sleeve Junction
Box Last Unit
Chart 1
Wire Mfg.
Belden or
Equivalent
2-Wire 8761 9341
Page 12 / IM 502
BLU
PNK
GRY
Mfg.’s Wire No.
0-300V 301-600V
Chart 2
Wire Mfg.
Belden or
Equivalent
Control Receptacle
In Wall Sleeve
Junction Box
Additional Unit
BLU
PNK
GRY
Control Receptacle In
Wall Sleeve Junction
Box Last Unit
2-Wire 8761 9341
To Local
Master Panel
Mfg.’s Wire No.
0-300V 301-600V
Pneumatic Day/Night ChangeoverControl
(Stand-Alone Units Only)
YEL
36
Control
Receptacle
In Wall Sleeve
Junction Box
37
BRN
Pneumatic/Electric
BLK
Switch.
WHT
Close Contacts
To Put Unit In
RED
Night Mode. (24VAC,
GRN
Class II, 1 AMP)
ORG
BLU
PNK
GRY
Wall Mounted Room Air Sensor
Two (2) Mounting Screws
(Furnished)
Sensor
American Standard
Electrical Box (Not Furnished)
Control Receptacle
in Wall Sleeve
Junction Box
Main Power To 0 To 301 To
Shielded Wire Manufacturer
Manufacturer Wire No.
Belden
or Equiv.
Dearborn 4-Wire – 1061804
4.50"
6.00"
.76"
22 AWG Stranded Wire BLK,WHT, GRN, ORG, BLU, RED)
YEL
36
37
BRN
BLK BLK
WHT WHT
RED RED
GRN GRN
ORG ORG
BLU BLU
PINK
GRY
Unit (Volts) 300V 600V
4-Wire 8729 –
2.75"
.280" Dia. (2)
1.38"
Set Point
Adjustment
3.28"
Communications
Port
Thermometer
.61"
Green LED
Tenant Override Switch
Note: All sensors have black (common) + white (thermistor sensor) + red
(LED) wires. Orange and blue wires are provided for communications and
a green wire for tenant override and set point adjustment.
`Wire Color Purpose
Black Common
White Thermistor
Red LED
Green* Setpoint Adjustment and Tenant Override
Orange** Communications
Blue** Communications
Note:
* Connect this wire only if setpoint adjustment and tenant override
feature are used.
** Only connect these wires if a PC for troubleshooting the controller
from the sensor is used.
See IM 629 for specific sensor installation instruction.
IM 502 / Page 13
Product Warranty
McQuay International, hereinafter referred to as the "Company," warrants that it will provide, at the Company's option,
either free replacement parts or free repair of component
parts in the event any product manufactured by the Company
and used in the United States and Canada proves defective in
material or workmanship within twelve (12) months from initial
start-up or eighteen (18) months from the date shipped by the
Company, whichever comes first. For additional consideration, the Company warrants that for four (4) years following
the initial warranty period it will provide, at the Company's
option, free replacement parts for the motor-compressor, or,
free replacement for any integral component of the motorcompressor which proves defective in material or workmanship. For an additional consideration, the Company warrants
that for nine (9) years following the initial warranty period it will
provide free replacement of the heat exchanger in gas-fired or
oil-fired furnaces which proves defective in material and
workmanship. (Extended warranties for motor-compressors
and heat exchangers are not applicable unless separately
purchased.)
To obtain assistance under this parts warranty, extended
motor-compressor warranty, or extended heat exchanger
warranty, simply contact the selling agency. To obtain information or to gain factory help for AAF-McQuay Incorporated,
and AAF-HermanNelson brandnames, contact McQuay International, Warranty Claims Department, 4900 Technology
Park Boulevard, Auburn, New York 13021-9030, telephone
(315) 253-2771.
This warranty constitutes the buyer's sole remedy. It is
given In lieu of all other warranties. There is no implied
warranty merchantability or fitness for a particular pur-
pose. In no event and under no circumstances shall the
Company be liable for incidental or consequential damages, whether the theory be breach of this or any other
warranty, negligence or strict tort.
This parts warranty and the optional extended warranties
extend only to the original user. Of course, abuse, misuse, or
alteration of the product in any manner voids the Company's
warranty obligation. Neither the parts or extended warranty
obligates the Company to pay any labor or service costs for
removing or replacing parts, or any shipping charges. Refrigerants, fluids, oils, and expendable items such as filters are
not covered by this warranty.
The extended warranties apply only to integral components of
the motor-compressor or heat exchanger, not to refrigerant
controls, electrical controls, or mechanical controls, or to
failures caused by failure of those controls.
Attached to this warranty is a requirement for equipment
containing motor-compressors and/or furnaces to report startup information. The registration form accompanying the product must be completed and returned to the Company within
ten (10) days of original equipment start-up. If that is not done,
the date of shipment shall be presumed to be the date of startup and the warranty shall expire twelve (12) months from that
date.
No person (including any agent, salesman, dealer or distributor) has authority to expand the Company's obligation beyond
the terms of this express warranty, or to state that the
performance of the product is other than that published by the
Company.
Page 14 / IM 502
NOTES
IM 502 / Page 15
AAF-HermanNelson
4900 Technology Park Boulevard, Auburn, NY 13021-9030 USA, (315) 253-2771
Printed on recycled paper containing at least 10% post-consumer material.
©2000 AAF-HermanNelson
Page 16 / IM 502-3 (Rev. 4/00)
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