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PNES3
Installation Manual
24 pgs2.79 Mb0

McQuay PNES3 Installation Manual

Installation & Maintenance Data
Group: PTAC
Part No.: 910109975
Date: July 2010
EnerSaver™ Packaged Terminal Air Conditioners and Heat Pumps with R-410A Refrigerant
Model PNES3 “A” Design
IM 1079
Table of Contents
Installation Instructions
© 2010 McQuay International
Unit Start-up
Check, Test & Start Form ...................................................... 13-14
Receiving Equipment
Before signing the freight bill, carefully examine the units and note any shortages or damages on the freight bill. The purchaser
is responsible for ling 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.
McQuay’s responsibility ceases upon delivery of material in good order to a carrier. To help avoid concealed damage, the units must be shipped, handled, and stored right side up as clearly marked on the container. If the units must be stored prior to installation, they
should be stored within the carton in a clean, dry, protected area.
When ready for installation, save the carton and use the carton shell to protect the cabinets until construction, painting, etc., is completed.
A complete EnerSaver unit is normally shipped in two cartons: one carton contains the cabinet/wall sleeve, front panel, louver
and subbase; the other carton contains the integrated chassis.
Cabinet/ Wall Sleeve
The EnerSaver cabinet/ wall sleeve is available in two sizes, 37½" (952mm) or 41½" (1054mm) long. This one-piece cabinet/wall sleeve functions as both the wall box as well as the room cabinet once the front panel is in place. Units with hydronic heat always utilize the long cabinet. The hydronic coil is factory mounted to the cabinet/ wall sleeve. Electric heat models are available in either size cabinet. Units ordered with either the stamped or the extruded aluminum louver are shipped with the louver factory mounted. Stamped anged louvers must be eld mounted after the room cabinet/wall sleeve is in place.
Chassis
The chassis is a completely self-contained, integrated heating/ cooling/ ventilation center. It houses the refrigeration components , air handling components, electric heater (if applicable), and controls. A single integrated chassis requires less on-site handling during installation and service periods.
Figure 1: EnerSaver Features
Ventilation Control
Manual damper standard on electric and heat pump chassis. Motorized damper standard
on hydronic chassis.
Fan Motors
Both indoor and outdoor fan motors are PSC for superior quality and
greater reliability.
Front Access Panel
Heavy gauge steel with powder paint coating provides maximum scratch and dent
resistance and minimizes
vibration for quieter operation.
Indoor Fan Wheels
Large diameter to provide
improved airow and quiet operation.
Heavy Duty Grille
Factory mounted, “pencil proof” bar stock
discharge grille.
Base Pan
One-piece base pan and
one-piece bulkhead provide weather tightness and water
integrity.
Room Cabinet/Wall Sleeve
Heavy gauge steel with powder paint coating provides maximum scratch and dent protection and resists
corrosion.
Outside Air Louver
Factory mounted extruded aluminum
to resist weathering.
Subbase
Heavy duty steel with powder coated paint
to resist corrosion.
Electro-mechanical Controls
Reliable and easy to operate. Easily adaptable to energy management systems.
IM 1079 / Page 2 of 24
Model Nomenclature
P NES 3 009 C Z 35 Z 12 AR 14 C 1 A 1
Model
Product Category
P= PTAC
Product Style
1 = 1st Style Change
Product Identier
NES = Enersaver Air Conditioner w/ Electric or Hydronic Heat NHS = Enersaver Heat Pump
w/ Electric Heat
Design Series 3 = A design - Enersaver 4 = B design Enersaver
Nominal Capacity - Btuh
009 = 9,000 012 = 12,000 015 = 15,000 (AC Only)
Voltage
A = 115 - 60 - 1 (Hydronic AC Only) C = 208 - 60 - 1 G = 230 - 60 - 1 J = 265/277 - 60 - 1
Coil Options Z = None
Heating Options
00 = None 35 = 2.5 kW nominal 41 = 3.5 kW nominal 44 = 4.0 kW nominal 62 = Hydronic - Normally Open Valve (hot water or steam) for EnerSaver “A” Design
63 = Hydronic - Normally Closed Valve (hot water or steam)
for EnerSaver “B” Design
Hand Orientation
Z = Not Applicable
SKU A = Stock B = Standard Delivery C = Extended Leadtime
Color
1 = Antique Ivory
Power Connection C = Cord
Return Air/ Outdoor Air
14 = Bottom
Discharge
AR = Flat Top
Controls
12 = Unit Mounted Manual
Changeover (MCO) 13 = Remote Thermostat Setup
24 = Unit Mounted Manual
Changeover (MCO) & Night Setback (NSB)
Note: Availability of voltages, heating options, and controls may vary amongst unit sizes. Consult your McQuay representative.
Installation Instructions
Louver Frame
When a louver frame is used, it must be installed prior to the
room cabinet/ wall sleeve, and it must be level and square (see Figure 2). If the louver frame is to be installed in a panel wall, install it at the same time as the room cabinet/wall sleeve.
1. Apply caulking compound on the surfaces of the louver
frame’s four anges which will come in contact with the wall. Add caulking as required for weather tight seal.
Figure 2: Louver Frame Installation
Intake Collar
Cabinet/Wall Sleeve
2. Place the louver frame in the wall opening from the exterior of the building, and apply rm pressure so that the caulked frame anges are snug against the exterior of the building. Secure the louver frame to the wall if
desired.
3. Secure the louver frame to the wall through the sides and
top. Never secure the frame through the bottom as it can cause leaks.
4. Coordinate the remaining instructions with the room cabi­net/wall sleeve installation instructions.
5. Drill four (4) 1/8" (3mm) diameter holes through the sides of the wall sleeve and through the ange of the louver frame. Attach the collar with four (4) #8 x 3/8 self-tapping screws provided. Do not drill holes in the bottom of the wall sleeve.
6. Caulk the seam between the louver frame and the wall watertight.
3" (76mm)MAX
IM 1079 / Page 3 of 24
Wall Sleeve Extension
1. When a wall sleeve extension is used, assemble it and the wall sleeve, then place them in the wall as a unit.
2. In cases where the louver is already installed in the cabinet/wall sleeve, remove it from the wall sleeve before
installing the extension.
3. Check the tagging of the wall sleeve extension to be sure it corresponds with the correct unit location.
4. Before attaching the wall sleeve extension to the wall sleeve, run a bead of caulking around the outside ange of the wall sleeve where it attaches to the extension, making a watertight seal.
Figure 3: Wall Sleeve Installation
5. Align the predrilled mounting holes of the wall sleeve extension with those of the wall sleeve (the louver mount­ing holes), and rmly attach these two parts with the six (6) self-tapping screws provided with the wall sleeve
extension.
6. Recheck caulking to ensure that all seams are watertight.
7. Refer to the wall sleeve installation instructions on page 8 for installation of the wall sleeve and extension into the wall.
Wall Sleeve Extension
Wall Depth
Caulk (by others)
Caulk (by others)
1. Attach the extension with the self tapping screws provided, through the slots in the rear of the cabinet/ wall sleeve.
2. Caulk the inside perimeter of the cabinet/wall sleeve/exten­sionwatertight.
3. After installation, caulk the exterior perimeter of the extension/wall watertight.
Cabinet/Wall
Sleeve
Extension
IM 1079 / Page 4 of 24
Subbase
When a subbase is used, it must be installed prior to the room
cabinet/wall sleeve. Consult the instructions shipped with the
subbase for proper installation.
1. When removing the subbase from the shipping carton
remove the two (2) shipping bolts and sheet metal nuts. Do not throw away the shipping bolts; they are used as
subbase leveling bolts.
2. The electrical subbase assembly contains the unit recep­tacle and junction box. Therefore, before installing the
subbase to the cabinet/wall sleeve, it will be necessary to run the power wiring from the stub-in and attach it to the
subbase receptacle.
3. The subbase assembly comes in two (2) parts:
a. A front section which bolts to the cabinet/wall sleeve. b. End ller pieces, which telescope to t ush
against the wall.
Figure 4: Subbase Installation
4. Attach the front section of the subbase to the cabinet/wall sleeve with the furnished nuts, screws and lock washers using holes provided as attachment points. Install the two (2) star washers provided as shown in the illustration to provide a ground path between the cabinet/wall sleeve
and the subbase.
5. Coordinate the remaining instructions with the room cabi­net/wall sleeve installation instructions.
6. After the cabinet/wall sleeve is fastened in the wall, position the end ller pieces so they are tight against the wall. Then, using the two (2) holes as a template, drill two (2) 11/64" (4.4mm) diameter holes into the front section of the subbase. Attach the two end llers, using the self­tapping screws provided.
Standard Subbase
Leveling Bolts
Electrical Subbase
Attach Front of Subbase to
Cabinet/Wall Sleeve Using Holes Provided (See item 4 above)
Attach Rear Section with (2) #10- 24 × 3/8" Self-Tapping Screws
Provided (See item 6 Above)
IM 1079 / Page 5 of 24
Wall Guard Flange
1. The wall guard ange is shipped disassembled and is normally taped to the inside of the cabinet/wall sleeve.
2. Mounting the wall guard ange before the cabinet/wall sleeve is installed:
a. Locate the rear edge of the wall guard ange at the
position that corresponds to the inside nished wall line.
b. Using the holes in the wall guard ange as a template,
drill eleven (11)1/8" (3mm) diameter holes in the cabinet wall sleeve and attach the wall guard ange to the cabinet/wall sleeve with the eleven (11) #8 x 3/8 self­tapping screws furnished.
Figure 5: Wall Guard Flange Installation
3. Mounting the wall guard ange after the cabinet/wall sleeve is installed:
a. Position the wall guard ange so that the rear edge is
tight against the inside nished wall surface.
b. Measure the distance from the front of the cabinet/
wall sleeve to the front edge of the wall guard ange and add 1/2" (13mm). At this dimension from the front of the cabinet/wall sleeve, drill eleven (11)1/8"
(3mm) diameter holes from the inside of the cabinet/
wall sleeve through the angle of the wall guard ange spacing them approximately 6" to 8" (153mm to 203mm) as shown. Attach the wall guard ange to the cabinet/wall sleeve with the eleven (11) #8 x 3/8 self-tapping screws provided.
Locate the Rear Edge of the Wall
Guard Flange Top and End Sections
at the Finished Wall Line
20" (508mm) Max.
8" (203mm) Min.
Top Wall Guard Flange
Optional Subbase
Cabinet/Wall Sleeve
End Wall Guard Flange
Note 2
Note 3
Wall Guard Flange
(Flange for Interior Wall Finish)
IM 1079 / Page 6 of 24
Intake Collar (Flange for Exterior Wall Opening)
Hydronic Piping
1. Stub hot water or steam piping through oor prior to installation of room cabinet/wall sleeve.
3. Install valve. Use soft solder only. Refer to the installation
instructions packed with each valve.
2. After the room cabinet/wall sleeve is installed, complete
the piping. Piping must not extend to the right beyond the
chassis guide rail in the bottom of the cabinet/wall sleeve.
Figure 6: Hydronic Piping Installation
Air Vent if Required (by others)
Return
4. After all piping is complete and chassis is installed,
connect wiring to the valve. Plug connection is provided on wiring which hangs from the left side of the chassis.
Supply
Hydronic Coil (Factory Mounted in Cabinet/Wall Sleeve)
Cabine/Wall Sleeve
Wire Harness
Shutoff Valves (by others)
Coil Supply and Return Connections
are 5/8" O.D. Female Sweat
Motorized Valve (AAF). Standard Piping For Hot Water Shown. For Steam System, Steam Trap By Others Required in Return Line.
IM 1079 / Page 7 of 24
Room Cabinet/ Wall Sleeve
1. Where applicable, install the louver frame, wall sleeve extension, subbase, and/or wall guard ange as per prior
installation instructions.
2. For masonry installations, set the room cabinet/wall
sleeve in soft mortar.
3. Position the room cabinet/wall sleeve in the wall opening. Where applicable, align with louver frame. See Figures
7 through 11 and associated notes for various installations.
4. Where applicable, level the subbase with the leveling
bolts provided.
Figure 7: Panel Construction, Bottom Inlet, Extruded Louver
Discharge
Return
Air
Inlet
5"(127mm)
Min.
Finished Floor Line
Slope 1° Max.
Subbase
(See Note 3)
Figure 8: Masonry Construction, Front Inlet, Extruded Louver
Masonry Lintels
8"
Min.
3" (76mm)
Slope 1° Max.
By Others
See Note 4
Fasteners By Others
Standard Louver
Installation Shown
Mortar Bed or Rigid Insulation Board
(203mm)
Discharge
Return Air Inlet
See Note 5
Finished
Floor Line
1/4" (6mm) Min.
Caulk
By Others
1/4" (6mm) Min. Caulk By
Others
5. After the room cabinet/wall sleeve is installed and leveled, secure the louver frame to the wall with screws driven through the sides and top of the room cabinet/wall sleeve outward through the louver frame. Never secure
the frame through the bottom, as it can cause leaks.
6. Caulk the outdoor joint between the room cabinet/wall sleeve and the louver frame: top, bottom, and both sides. Do not permit caulking to block the weep holes.
7. Install the outdoor louver. Holding the louver with a wire
loop, or other similar means, push the louver out through
the rear opening in the room cabinet/wall sleeve and pull
the louver back to the rear face so that the louver studs
pass through the holes in the room cabinet/wall sleeve ange. Attach the louver with the washers and nuts
provided, and securely tighten the louver in place.
Figure 10: Masonry Construction, Bottom Inlet, Extruded Louver
Return
Air
Inlet
5"(127mm)
Min.
Finished Floor Line
Figure 11. Panel Construction, Bottom Inlet, Stamped Flanged Louver
Discharge
Return
Air
Inlet
8"
(203mm)
Min.
Discharge
Slope 1° Max.
Subbase
(Optional)
Slope 1° Max.
Masonry Lintels
By Others
Fasteners By Others
Flush Louver Installation Shown
1/4" (6mm) Min. Caulk
By Others
See Note 4
Standard Louver
Installation Shown
Figure 9: Masonry Construction, Front Inlet, Stamped Flanged Louver
(203mm)
Min.
Discharge
Return Air Inlet
See Note 5
Finished
Floor Line
Mortar Bed or Rigid Insulation Board
IM 1079 / Page 8 of 24
8"
3" (76mm)
Slope 1° Max.
Masonry Lintels By Others
See Detail
Fasteners By Others
Caulk By
Others
5"(127mm)
Min.
Finished Floor Line
Notes:
1. Recommended wall openings are 16½" x 38" (419mm x 965mm) for short
cabinets and 16½" x 42" (419mm x 1067mm) for long cabinets.
2. Set the cabinet level side to side and level to no more than 1° slope
downward toward outside, front to back.
3. Fasten the cabinet/wall sleeve to the wall when possible. Do not fasten the
cabinet/wall sleeve through its bottom.
4. Regardless of the type of wall construction, the cabinet/wall sleeve must be
eld caulked to the wall around the top, bottom, and both sides, to form an airtight and watertight weather seal. For ush louver installation, if the wall material at the opening is not watertight, framing or ashing must be provided around the wall opening (by others) to prevent penetration of water into the wall.
5. 1/2" (13mm) minimum for power cord (short cabinet only). Caution: If the
conditioned space is carpeted, increase this dimension to 3/4" (19mm) minimum for long cabinets or to 1¼" (38mm) minimum for short cabinets.
Subbase
(See Note 3)
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