McQuay PDHP Installation & Maintenance Data

Installation & Maintenance Data
IM 882
Group: PTAC
Part No.: 668109501
Date: January 2008
Applied Packaged Terminal Air Conditioner
16" x 42" PDAC/PDHP With Top-Mounted Hydronic Heat
©2008 McQuay International
Table of Contents
Safety Information........................................................3
Inspection......................................................................3
Nomenclature................................................................4
Introduction...................................................................5
Dimensional Data........................................................6
Wall Opening Requirements......................................7
Louver Frame Installation......................................7
Wall Sleeve Extension Installation.........................7
Wall Construction Types........................................8
Wall Sleeve Installation.........................................8-12
Thin Wall Construction.....................................8-10
Thick Wall Construction....................................... 11
Anchoring Wall Sleeve.........................................12
Installation of Louvers..............................................12
Electrical Service..................................................12
Installation of Cooling Chassis...........................12-13
Installation of Heat Section......................................13
Installation of Room Cabinet...................................14
Supply and Return Coil Arrangements..................14
Controls
PDAC/PDHP Digital Touchpad Control............15-19
Inputs & Outputs..................................................15
Keys and Indicators Labels..................................15
Display Function Legend.....................................15
Wireless Remote Control (Option).......................15
Operation..............................................................16-17
Modes of Operation-Description........................17-19
Control Board Configuration..............................19-20
Incremental Start-up Report Audit.........................21
Equipment Start-up..................................................22
Controls Operating Instructions........................23-25
Remote Wall Mounted Thermostats................26-28
Wiring Diagrams..................................................28-31
Remote Thermostat Primary/Secondary Unit
Wiring Connections..............................................28
Premium (Programmable) Digital Control...........29
Premium (Programmable) Digital
Control Board.......................................................30
Premium (Programmable) Digital Control
Board with Standby..............................................31
Scheduled Maintenance............................................32
Equipment Protection from the Environment......32
Recommended Spare Parts..................................33
Refrigeration Cycle .............................................33
Faults and Protection Codes
PTAC/PTHP Control Board.................................34
Solid State Digital Controls
LUI Display Codes...............................................34
Troubleshooting....................................................35-36
Now that you have made an investment in modern, efficient McQuay® equipment, its care and operation should
be a high priority. For training information on all McQuay HVAC products, please visit us at www.mcquay.com and
click on Training or phone 540-248-0711 and ask for the Training Department.
IM 882 / Page of 36
Safety Information
Follow all safety codes. Wear safety glasses and
work gloves. Use a quenching cloth for brazing
operations. Have a fire extinguisher available. Follow
all warnings and cautions in these instructions and
attached to the unit. Consult applicable local building
codes and National Electrical Codes (NEC) for special
requirements.
Recognize safety information. When you see a safety
symbol on the unit or in these instructions, be alert to the
potential for personal injury. Understand the meanings
of the words DANGER, WARNING, and CAUTION.
DANGER identifies the most serious hazards that will
result in death or severe personal injury; WARNING
means the hazards can result in death or severe personal
injury; CAUTION identifies unsafe practices that can
result in personal injury or product and property damage.
Improper installation, adjustment, service,
maintenance, or use can cause explosion, fire, electrical
shock, or other conditions which may result in personal
injury or property damage. This product must be installed
only by personnel with the training, experience, skills,
and applicable licensing that makes him/her “a qualified
professional HVACR installer.”
WARNING
The installer must determine and follow all applicable
codes and regulations. This equipment presents hazards
of electricity, rotating parts, sharp edges, heat and weight.
Failure to read and follow these instructions can result in
property damage, severe personal injury or death. This
equipment must be installed by experienced, trained
personnel only.
DANGER
Hazardous Voltage!
Disconnect all electric power including remote
disconnects before servicing. Failure to
disconnect power before servicing can cause
severe personal injury or death.
CAUTION
Use copper conductors only. Unit terminals are not designed
to accept other types of conductors.
Failure to do so can damage equipment.
Inspection
When the equipment is received, all items should
be carefully checked against the bill of lading to be
sure all crates and cartons have been received. All units
should be carefully inspected for damage when received.
If any damage is noticed, the carrier should make the
proper notation on the delivery receipt acknowledging
the damage. The carrier should also fill out a Carrier
Inspection Report. The McQuay International Traffic
Department should then be notified. The unit nameplate
should be checked to make sure the voltage agrees with
the power supply available. This unit is designed and
built for through-the-wall installation in either new
or existing buildings. The self-contained refrigerant
system delivers cooling to the desired space. Heating is
accomplished with a top mounted hydronic heating coil.
Each conditioner consists of the following
components:
1. Cooling Chassis — Shipped separate in a single carton.
2. Wall Sleeve — Shipped separate in a single carton or in a multi-pack of 15.
3. Hydronic Heat Section — Shipped in a separate carton.
4. Outdoor Louver — Shipped in a separate carton.
5. Room Cabinet — Shipped in a separate carton with kickplate attached.
IMPORTANT
This product was carefully packed and thoroughly inspected
before leaving the factory. Responsibility for its safe delivery
was assumed by the carrier upon acceptance of the
shipment. Claims for loss or damage sustained in transit
must therefore be made upon the carrier as follows:
VISIBLE LOSS OR DAMAGE
Any external evidence of loss or damage must be noted
on the freight bill or carrier’s receipt, and signed by the
carrier’s agent. Failure to adequately describe such external
evidence of loss or damage may result in the carrier’s
refusal to honor a damage claim. The form required to file
such a claim will be supplied by the carrier.
CONCEALED LOSS OR DAMAGE
Concealed loss or damage means loss or damage which
does not become apparent until the product has been
unpacked. The contents may be damaged in transit due
to rough handling even though the carton may not show
external damages. When the damage is discovered upon
unpacking, make a written request for inspection by the
carrier’s agent within fifteen (15) days of the delivery date.
File a claim with the carrier since such damage is the
carrier’s responsibility.
IM 882 / Page of 36
McQuay Model PDAC/PDHP Product Nomenclature
Note: For Illustration purposes only. Not all options available with all models.
Please consult a McQuay Sales Representative for specific availability.
P DAC 1 009 E M R
H
A
B
A
M A A E
Unit Type
Warranty
P = PTAC
A = Standard
E = Extended
X = Special
Product Identifier
DAC = PDAC
DHP = PDHP
SKU
Design Series
A = Stock
B = Build to Order
1 = A Design 1
2 = B Design 2
3 = C Design 3
4 = D Design 4
5 = E Design 5
Upgrade Packages
Unit Size
S = Seacoast
Y = None
007 = 7,000
009 = 9,000
012 = 12,000
015 = 15,000
017 = 17,000
Power Connection
L = Long Cord – 72" (Standard)
S = Short Cord – 18" (Optional)
Y = None
Voltage
A =
E =
J =
P =
115-60-1
208/230-60-1
265/277-60-1
208/230-60-1 w/stndby 115-60-1
Brand Name
Room Interface
M = McQuay
Cabinet Type
A = Top-Mounted Hydronic Flat top,
Bottom Return
Refrigerant
R = R-22
Controls
Heating Type
E = Electric Heat
H = Hydronic
A = Hydronic w/Intermediate Electric
Y = None (PDHP only)
Electric Heat
A = 2.5 Kw
B = 3.5 Kw
C = 5.0 Kw
Y = None
Hydronic Heat Type
S = Steam Top Mount (Normally Closed)
T = Steam Subbase (Normally Closed)
H = Hot Water Top Mount (Normally Open)
J = Hot Water Subbase (Normally Open)
Y = None
IM 882 / Page of 36
Control Board Type
PNUY = Premium, Non-Programmable, Unit Mounted
PNWY = Premium, Non-Programmable, Wall Mounted
PNRY = Premium, Non-Programmable, Infared
PPUY = Premium, Programmable Unit Mounted
PPWY = Premium Programmable, Wall Mounted
PPRY = Premium Programmable, Infrared
Damper Type
Damper Control
A = Automatic (Required for Hydronic Heating Subbase)
M = Manual
Y = None
Introduction
McQuay offers the most complete line of PTAC and
PTHP products for new construction projects and
exact replacements for our original Singer, Remington,
American Air Filter and American Standard brand
equipment, and models from other manufacturers.
McQuay products feature our proven institutional grade
design and construction that allows you to benefit from
the long life, reliability, and low sound levels, along
with higher energy efficiencies for lower operating costs.
Plus, McQuay offers a nationwide network for original
equipment replacements with local parts and service.
McQuay® Applied Packaged Terminal Air Conditioners
and Heat Pumps are designed and built for through-thewall installation in either new or existing buildings. The
self-contained refrigerant system delivers cooling to the
desired space. Heating can be accomplished with electric
resistance, with hydronic (water or steam), hydronic
with intermediate electric resistance or with reverse
cycle technology (heat pump models only). Generally,
an estimate for capacity selection is 35 BTUH per square
foot of floor space (cooling) and 4 BTUH (1.25 watts)
per cubic foot (heating). The architect or engineer must
verify the selection. Note that the heat pump reverse
cycle generates approximately 10 BTUs per electrical
watt as compared to 3.4 BTUs per watt with resistance
electric heat. The unit will restart at its last setting after a
power interruption.
Figure 1. Exploded View of the 16" x 42" PDAC/PDHP with Top-Mounted Hydronic Unit
Top-Mount Hydronic Heat Section
Louver (Architectural)
Cooling Chassis
Room Cabinet
16" x 42" Wall Sleeve
Removable Front Panel
Premium Digital Touchpad Control
IM 882 / Page of 36
Dimensional Data
Figure 2. Unit dimensions – Chassis
Premium
Digital
Touchpad Control
Figure 3. Unit dimensions – Wall Sleeve, Cabinet & Louver
11⁄4" RECESS FOR ARCHITECTURAL LOUVER
“A” – IN. (MM)
“D” – IN. (MM)
“B” – IN. (MM)
ROOM CABINET
WALL SLEEVE
WALL THICKNESS
3
3
3
13 ⁄4 (349)
4 ⁄4–53⁄4 (121–146)
18 ⁄4 (476)
133⁄4 (349)
53⁄4–63⁄4 (146–171)
173⁄4 (451)
133⁄4 (349)
63⁄4 –73⁄4 (171–197)
163⁄4 (425)
133⁄4 (349)
73⁄4 –83⁄4 (197–222)
153⁄4 (400)
133⁄4 (349)
83⁄4 –93⁄4 (222–248)
143⁄4 (375)
133⁄4 (349)
93⁄4 –103⁄4 (248–273)
133⁄4 (349)
133⁄4 (349)
103⁄4 –113⁄4 (273–298)
123⁄4 (324)
133⁄4 (349)
113⁄4 –123⁄4 (298–324)
113⁄4 (298)
133⁄4 (349)
123⁄4 –133⁄4 (324–349)
103⁄4 (273)
143⁄4 (375)
133⁄4 –143⁄4 (349–375)
103⁄4 (273)
153⁄4 (400)
143⁄4 –153⁄4 (375–400)
103⁄4 (273)
163⁄4 (425)
153⁄4 –163⁄4 (400–425)
103⁄4 (273)
173⁄4 (451)
163⁄4 –173⁄4 (425–451)
103⁄4 (273)
11⁄2"
(38mm)
Standard Size Wall Sleeve
Note: Electrical rough-in should be located behind kickplate
(removable front) and below wall sleeve.
“A”
52"
(1320mm)
191⁄2"
(495mm)
51⁄2"
(140mm)
3"
(76mm) Min.
IM 882 / Page of 36
Kickplate (Removable
Front)
“B”
27⁄8"
(67mm)
Wall Space For Piping
Rough-in
(Typ. R.H. & L.H.)
3"
(76mm)
Wall Thickness
7/8"
(22mm)
91⁄8"
(232mm)
15⁄16"
(33mm)
“D”
11⁄4" (32mm)
16"
(406mm)
7/8"
(22mm)
15⁄8"
(41mm)
3"
(76mm) Min.
Kickplate Height
WARNING
Figure 4. Louver Frame Dimensions
Residential and institutional cleaning compounds can cause
permanent damage to the packaged terminal unit. To avoid
damage to unit controls and heat transfer surfaces, do not
spray cleaning compounds onto the discharge grille, return
air opening, or unit controls. Normal cleaning can be accomplished by wiping the unit surface with a damp cloth. When
using cleaning compounds on carpets, floors or walls, turn
the unit off to avoid drawing potentially damaging vapors into
the package terminal unit.
183/16"
423/16"
163/16"
Wall Opening Requirements
When roughing in the opening for the wall sleeve, make
certain there is sufficient clearance from the walls and
floor. The wall sleeve should be positioned a minimum of
5/8" in from the room side finished wall to accommodate
the room cabinet. A minimum distance of 3" above the
finished floor is required for return air.
The rough opening should measure 16¼" high x 42¼"
wide. Before installing the unit, check the wall opening
to be sure the wall sleeve will slide into the opening
unobstructed. For masonry walls, a lintel must be used to
provide support over each opening.
When using a louver frame, the opening must measure
165/8" x 425/8". Louver frames should be used for
panel wall and thin wall applications to assure positive
anchoring to the wall (Figure 4).
The opening must start 4" above the finished floor
(including carpeting) to provide proper return air.
Louver Frame Installation
When a louver frame is used, it must be installed prior
to, or at the same time, as the wall sleeve, and it must be
level and square.
1. Apply caulking compound on the surfaces of the louver frame’s four flanges which will come in contact
with the wall. Add caulking as required for weather
tight seal.
2. Insert the sleeve of the louver frame into the wall
opening from the exterior of the building and apply
firm pressure so that the caulked frame flanges 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 may cause leaks.
If the louver frame is to be installed in a panel wall, it
should be installed at the same time as the wall sleeve.
CAUTION
DO NOT drill holes in the bottom of the wall sleeve as it will
cause leaks.
443/16"
3 /4"
3
Note: Wall Sleeve rough opening when using a Louver Frame must
be 165/8" x 425/8"
Wall Sleeve Extension Installation
Wall sleeve extensions are shipped in a separate carton
and tagged to match the proper unit. Be sure to check
tagging of the extension against that of the unit. Install
the wall sleeve extension as follows:
1. Position the extension with standard wall sleeve so proper alignment with drain and mounting holes is
achieved.
2. Place a bead of caulk around the perimeter of the wall sleeve and another bead around the mating side of the wall sleeve extension so that the joint is watertight. Do not permit caulking to block the weep holes. Be sure to use a resilient caulking such as silicone.
3. Assemble the wall sleeve extension to the wall sleeve. Clean out weep holes to assure proper drainage.
4. Continue wall sleeve installation according to instructions on page 8.
Figure 5. Wall Sleeve Extension
24"
As Required
Room Side
16"
Air Splitters
111/8"
42"
24"
67/8"
Wall Sleeve Extension
IM 882 / Page of 36
Wall Construction Types
Wall Sleeve Installation
Thin Wall Construction
Figure 6. Panel Wall (Thin) Construction
The standard wall sleeve is designed to be easily installed
in a variety of wall constructions. For panel wall and thin
wall construction, it is recommended that the optional top
angle be used and the wall sleeve be supplied with a turned
down flange (see Figures 9, 10 & 11).
The recommended procedure for installing units in panel
wall and thin wall construction is as follows:
Steel Studs
Concrete
Pillars
1.Clean the opening of all debris that may interfere with
installation.
2.Recess the wall opening so that the louver is flush with
the exterior of the building. The center of gravity is approximately 103⁄4" (273mm) from the rear face of the
standard wall sleeve. If a subbase is not used, field support must be provided up to the center of gravity. This
support can be metal, wood or concrete.
Floor
161/4" x 421/4"
Wall Sleeve
Rough Opening or
165/8" x 425/8" When using a
Louver Frame
(See page 7 for Installation)
Figure 7. Frame and Brick Construction
16" x 42"
Wall Sleeve
Lintel
(by others)
161/4" High
Figure 8. Masonry Wall (Thick) Construction
Wall Sleeve Extension
(See page 7 for
Installation)
IM 882 / Page of 36
Splitters
CAUTION
Do not drill holes in the base of the wall sleeve. Use shims
between the wall and the wall sleeve to prevent wall sleeve
distortion during anchoring.
421/4" Wide Wall
Sleeve Rough Opening
Room Side
3.Level wall sleeve side to side and pitch to outside 1/8"/ft.
to assure proper sleeve drainage to outside. Anchor with
appropriate fasteners. Use holes provided (see Figure 15,
page 12) or drill additional holes as required to secure
firmly.
Lintels (by others)
16" x 42" Wall Sleeve
4.Caulk the wall sleeve to the wall opening on both the
inside and outside perimeter. This can be done from the
inside of the building. Be careful not to plug the weep
holes.
Note: When using recessed louver wall sleeve, level and plumb wall
sleeve using the top and sides of the sleeve and the chassis slide rails.
DO NOT level using the bottom of the wall sleeve as it has a built in
pitch to drain.
Figure 9. 16" x 42" wall sleeve with continuous flange and drip edge
X*
Flange location (from outdoor side of sleeve)
is factory provided in increments of 1/8"
D**
42"
Flange Height
(Standard = 1-1/4")
Louver Mounting Holes
16"
Drip Edge
Figure 10. Wall sleeve installation for thin wall
construction
Figure 11. 16" x 42" wall sleeve with optional leveling
legs and continuous flange
B**
13-3/4"
Insulation Wet Panel
Window Stool
1-5/8" Metal Stud 16" O.C.
3-1/2" Thick
Batt Insulation
X*
D**
Hydronic Heat
Coil Section
X*
42"
Optional
Continuous
Flange
11/4"
16"
Optional
Leveling Leg
Outdoor Side of
Sleeve
Cabinet
Leveling Leg
to Support
63/8"
Note:
Given dimensions are standard.
Notes:
** See table on page 6, for dimensions “D” and “B”.
* Dimension “X” is field determined or specified. Angle is factory welded at given dimension when option is designated.
IM 882 / Page of 36
Wall Sleeve Installation —
2. Position the wall sleeve into the wall so that it is flush
with the exterior wall. Important: If the wall sleeve
has been installed into a thick wall, make certain the
wall sleeve protrudes into the room a minimum of
11/8" (29mm) beyond the finished wall surface. This
is to accommodate the heat section and room cabinet.
The center of gravity is 103/4" (273mm) from the rear
face of the standard wall sleeve. If no subbase is being
employed, adequate support for the wall sleeve up to
the center of gravity must be provided at the job site.
This support can be wood, metal or concrete.
3. Level wall sleeve side to side and pitch to outside 1/8"/
ft. to assure proper sleeve drainage to outside. Anchor
with appropriate fasteners using holes provided (see
Figure 15, page 12), or drill additional holes as required
to secure firmly.
Thin Wall Construction
Applications utilizing field supplied louvers require additional considerations:
1. Louvers supplied by others must have 70% free area
or a pressure drop not exceeding 0.05 in. w.g. (12.45
Pa) at 300 fpm (1.524 m/sec) face velocity, and a blade
design that will not cause recirculation of air.
2. McQuay does not warrant the rain and water leakage
resistance of its equipment when used with louvers by
others.
3. All louvers by others must be approved by McQuay
engineering prior to installation.
Figure 12 illustrates a typical installation using a field
supplied, continuous louver. This method is for illustration purposes only. Other variations may be employed as
long as they meet McQuay's louver specifications listed
above and so long as adequate wall support is achieved.
All structural supports and fasteners (except the optional
top angle and turned down flange) are field supplied.
Installation of wall sleeves with continuous louvers is
very similar to that of applications with factory furnished
louvers. Assuming the louver meets the McQuay’s criteria,
as stated previously, proceed to install the wall sleeve as
follows:
1. Clean the opening of all debris that may interfere
with installation.
CAUTION
Do not drill holes in the base of the wall sleeve. Use shims
between the wall and the wall sleeve to prevent wall sleeve
distortion during anchoring.
4. Caulk the wall sleeve to the wall opening on both the
inside and outside perimeter. This can be done from the
inside of the building. Be careful not to plug the weep
holes.
Figure 12. Wall sleeve installation using top angles and field supplied continuous louver
133⁄4"
(349mm)
Wall
Frame
By Others
11⁄4"
(38mm)
42"
(1069mm)
Optional
Top Angle
Insulated
Panel
Optional
Top Angle
Wall
Sleeve
Wall
Sleeve
16"
(406mm)
3" Min.
(76mm)
Turndown
Flange
(See Detail)
X*
Outside Edge
of Sleeve
Optional
Subbase
Finished Floor
Including Carpet
101⁄2"
(267mm)
Max.
1"
(25mm)
16"
(406mm)
Wall Sleeve
Resilient
Caulking
(see Note 2)
Outside Louver
By Others
Turndown
Flange
Min. 37⁄8"
(98mm)
Supports By Others
(2 Req’d.)
Insulated Panel
Notes:
1. Caulk entire perimeter of wall sleeve after installation.
2. Seal area between louver and wall sleeve to prevent condenser air recirculation.
3. Dimensions shown in table on page 6 do not apply to this application.
* Dimension “X” is field determined or specified. Angle is factory welded at given dimension when option is designated.
IM 882 / Page 10 of 36
Resilient
Caulking
(see Note 2)
CAUTION
Do not drill holes in the base of the wall sleeve. Use shims
between the wall and the wall sleeve to prevent wall sleeve
distortion during anchoring.
Figure 13. Wall sleeve installation using brickstops
B
Wood Stool
4"
A heavy-gauge, corrosion resistant wall sleeve is provided
for each unit. The wall sleeve is either shipped in a separate
carton or shipped in a multi-pack of 15.
Typical installation for masonry walls is shown in Figure
13. The recommended installation procedure for this type
of construction is as follows:
1. Clean the opening of all debris that may interfere with
installation.
2. Be sure the unit’s center of gravity falls within the load
bearing surface of the wall. The center of gravity for
the unit is approximately 103⁄4" (273mm) from the rear
edge of the wall sleeve. If the center of gravity is not
within the load bearing surface, then additional support
such as wood, metal or concrete must be provided in
the field.
3. Place a thin pad of soft mortar on the bottom of the
opening. Important: Make certain the wall sleeve
protrudes into the room a minimum of 11⁄8" (29mm)
beyond the finished wall surface to accommodate the
heat section and room cabinet. Be sure to recess the wall
sleeve enough to accommodate outside louver. This
recess is 3/8" (9.5mm) for stamped louvers and 11⁄4"
(32mm) for architectural louvers. The louver should
be flush to exterior surface when completed.
4. If a brickstop is employed (as shown in Figure 5), slide
the wall sleeve into the wall until the brickstop contacts
the exterior bricks, as illustrated below. If a brickstop
is not used, slide the wall sleeve in the wall so that
it extends into the room a minimum of 11⁄8" (29mm)
beyond the finished interior wall surface. This allows
room to attach the heat section and room cabinet. The
wall sleeve should also be recessed enough to accommodate the outside louver. Level wall sleeve side to
side and pitch to outside 1/8"/ft. to assure proper sleeve
drainage to outside.
5. After the mortar has dried, remove the masonry support from the wall sleeve. Note: The wall sleeve is not
intended to replace the lintel.
6. Anchor with appropriate fasteners (as shown in Figure
15, page 12). A 5/16" (8mm) hole is provided on each
side, 2" (51mm) down from the top and 2" (51mm)
in from the rear of the wall sleeve. It may necessary
to drill additional holes in the wall sleeve to firmly
secure it.
Brick
Optional
Continuous
Flange
Wall Sleeve
1'-4"
Thick Wall Construction
7. Caulk the wall sleeve to the wall opening on both the
in-side and outside perimeter using a resilient, nonhardening caulk such as silicone. Be careful not to
plug the weep holes.
2'-4"
Wall Sleeve Installation —
Outside
Louver
Room
Cabinet
A
D
2'-61⁄2"
Finished
Floor
1"
7-1⁄4"
Exposed Projection
Concrete Slab
Brick
Casement Window with
Insulating Clear Glass
Figure 14. Standard 16" x 42" wall sleeve with brick
stop
D
Optional Brickstops
X
42"
(1067mm)
Wall Sleeve
16"
(406mm)
Outside Edge
of Sleeve
1-1⁄4" (32mm)
Notes:
1. For dimensions B and D, see table on page 6.
2. Dimension “X” is “as required” and is usually sent to the factory
to be welded during wall sleeve fabrication.
3. Caulk entire perimeter of wall sleeve after installation.
4. Wall sleeve to extend a minimum of 1-1/4" past finished
sheetrock.
5. Wall sleeve should be installed recessed 1-1/4" from face of brick
so that when louver is installed it is flush with face of building.
IM 882 / Page 11 of 36
Anchoring
Anchoring the wall sleeve in the opening is accomplished
as shown in Figure 15. It is recommended that rubber isolation washers be used with the fasteners to minimize sound
transmission from the equipment to the wall, at the point
of contact.
A 5⁄16" (8mm) hole is provided on each side, 2" (51mm)
down from the top and 2" (51mm) in from the rear of the
wall sleeve. It may be necessary to drill additional holes
in the wall sleeve to firmly secure it. Caution: Do not drill
holes in the base of the wall sleeve. Use shims between
the wall and the wall sleeve to prevent sleeve distortion
during anchoring.
Figure 15. Anchoring the Wall Sleeve (all anchoring
hardware field supplied)
Rubber
Isolation
Washer
Expansion
Anchor Bolt
Molly or
Toggle Bolt
Wood
Screw
WARNING
Improper electrical supply can cause property damage,
severe personal injury or death.
Electrical Service
All wiring should be in accordance with all local andNational Electrical Code requirements.
Units are supplied with an attachment cord and plug which
exit from the bottom of the conditioner on the control side.
The cord for 115V, 208V and 230V has a usable length of
72" (1829mm) from where it exits the conditioner. The use
of extension cords to increase the length of the plug/cord
set is not recommended.
The attachment plug size should be used to determine the
circuit ampacity and overcurrent protection. Time delay,
overcurrent protection devices are recommended to prevent unit damage and to avoid nuisance tripping.
Outlets are generally located beneath the conditioner, on
or recessed in the wall so it is concealed by the conditioner
overhang and kickplate.
Cooling Chassis Installation
Correct installation of the cooling chassis is extremely
important to insure the proper operation of the unit. Install
the chassis as follows:
Do Not Drill Holes in Bottom of
Cripple Stud
Sleeve (Except for Internal Drain Kit)
Main Stud
Installation of Louvers
1. Remove louver from its shipping carton which
also contains a hardware package for mounting the
louver.
2. Remove outside weather plug and weather panel
from wall sleeve.
3. Make a temporary handle by looping a piece of
flexible wire or heavy cord through the louver. This
enables the installer to keep a firm grasp on the
louver when installing from inside the room.
4. Push the louver through the opening at the rear of
the wall box, then pull the louver back to the wall
sleeve flange so that the louver studs pass through
the holes in the flange.
5. Attach washers and nuts and secure louver in place.
6. If the cooling chassis is not to be immediately
installed, replace the weather panel.
IM 882 / Page 12 of 36
WARNING
The chassis weighs approximately 150 lbs. Use blocking
and lifting devices. Do not raise over any body parts.
1. Remove outer carton and inspect for any shipping
damage. Report any found to the carrier.
2. Check nameplate data on chassis to insure that the
correct job site distribution has been made with
respect to cooling capacities. Generally, corner
rooms require larger capacities.
3. Remove chassis from carton by pulling evenly on
substantial portion of unit. Caution: Do not pull on
evaporator fan housing, control box or compressor.
CAUTION
Do not lift by pulling on the tubing. Tubing can crack or
bend damaging the unit.
4. If wall sleeve has been previously installed, remove
temporary weather panel.
5. Check all fasteners to make certain they have
not come loose during shipment. Do not loosen
nuts holding down compressor; they are set at the
factory.
6. Do not lubricate motors before start-up. Motors are
factory lubricated. Consult “Scheduled Maintenance”
section on page 31 for lubrication instructions.
7. Place Tinnerman clips from bag onto wall sleeve.
Clips and mounting screws are enclosed in a bag
attached to the top of the condenser coil cover.
8. If louver has not been previously installed, connect
to wall sleeve as described above.
9. If louver is supplied by others, as illustrated in
Figure 12, page 10, be sure to install foam type
gaskets on all sides of the condenser coil to prevent
recirculation or bypass of condenser air.
10. Slide chassis into wall sleeve until firmly seated
against weather seals of wall sleeve. Caution: Do
not push on coil surface or control box cover. Make
sure the compressor tubing does not catch when
inserting chassis.
11. Secure chassis to wall sleeve with four (4) sheet
metal screws packaged with the Tinnerman clips.
12. Plug electrical cord into receptacle. Excess cord
should be coiled up neatly and stored in the
conditioner.
13. Set the manual damper operator in open or closed
position as desired. On units equipped with the
optional electric fresh air damper, set for “AU”
or "CL" in the Configuration Mode. In “AU,” the
damper is open whenever the indoor fan motor is
running (AU is Auto and CL is Closed).
14. Set the indoor fan mode for off cycle on the PC
board for the off cycle selection of 10, 20, 30
minutes or 1 hour off cycle time. The fan will operate
for 2 minutes and shut down for the selected off
cycle period. For continuous fan operation, the fan
mode selection on the touchpad or remote thermostat
must be set to continuous or on. When the room
thermostat is in the cycle or auto mode, it will cycle
the indoor fan when there is a call for heating or
cooling. See page 28 for jumper placement details.
15. Set the temperature limiting feature to the desired range of thermostat operations. As shipped, the range is 60°F to 85°F.
16. Replace the air filter and front panel.
17. Connect the low voltage valve wires with the
Molex connection to the valve.
Heat Section Installation
The heat section is designed to be “snapped” into the top
of the wall sleeve (Figure 16). There are four square holes
provided in the wall sleeve, two on each side, for coil attachment. Assembly the heat section to the wall sleeve as
follows:
1. Unpack the heat section and inspect for any shipping
damage. Report any damage found to the carrier.
2. Check the heat section against the plans to make certain
the coil supplied has the connections match the specifications.
3. Firmly attach the heat section to the wall sleeve by lining
up the heat section hooks with the square holes supplied
in the wall sleeve. Snap the heat section in place by
exerting pressure downward.
4. The valve is always connected to the supply side of
the coil. There are seven possible coil arrangements
available. Each is shown on the next page. Select the
illustration below that matches the coil supplied and pipe
it according to the illustration. Install valve and other
accessories including air vents, steam traps, stop balance
valves, etc., as specified by the design engineer.
5. For valve installed on right side of the unit, make electrical connection to matching cap extending from the
control box. For left side valve, make electrical connection to cap mounted to left side of chassis.
Note: When the heating medium is steam, the supply
connection should be attached to the uppermost tube and the return to the lower tube. The coil is pitched in the
casing to allow drainage of condensate.
When the heating medium is hot water, the supply
connection should be made to the lowermost tube and the return to the uppermost tube. Hot water coils should be “flooded” to minimize air entrapment.
Figure 16. Installing the Cooling Chassis and Hydronic
Heat Section
Hydronic Heat Section
Cooling
Chassis
Factory
Supplied
Holes (2)
Wall Sleeve
Damper
Actuator
IM 882 / Page 13 of 36
Installing Room Cabinet
The room cabinet is the last piece to install. The following
instructions assume all components (wall sleeve, heat section, louver and chassis) have been installed, piped and
anchored. All major room construction should also be
complete so as not to damage the room cabinet after it has
been installed. Attaching the room cabinet can be completed as follows:
1. Firmly grasp the room cabinet and lift it over the
heat section. There are notches in the back flanges of
the room cabinet that rest on the wall sleeve to assure
it is centered.
2. Align the notches of the room cabinet on the wall
sleeve and firmly push the cabinet downward until it
seats on the wall sleeve (see Figure 17).
3. Screw the cabinet to the wall using the screws
provided. There are two (2) screw holes provided on
each side located on the inner flanges of the room
cabinet.
4. Loosen the four (4) wing nuts on the kickplate and
adjust the kickplate the required distance to the floor.
5. Tighten the wing nuts firmly.
6. Wipe any smudges or dirt off the room cabinet using
a mild cleaner and a soft cloth.
Figure 17. Room Cabinet Detail
Notch on back of cabinet to set
on wall sleeve
Screw slots on back of cabinet for
securing to wall (2-each side)
Supply and Return Coil Arrangements
Hot Water
Steam
Figure 18e. Left-hand supply and return
Figure 18a. Left-hand supply and return
Supply
Return
Return
Supply
Figure 18f. Right-hand supply and return
Figure 18b. Right-hand supply and return
Return
Supply
Supply
Return
Figure 18g. Left-hand supply, right-hand return or
Right-hand supply, left-hand return
Figure 18c. Right-hand supply, left-hand return
Supply
Return
Return
or
Supply
Figure 18d. Left-hand supply, right-hand return
Supply
Return
IM 882 / Page 14 of 36
Return
or
Supply
PDAC/PDHP Digital Control
Figure 19. Digital Control
Display Function Legend (Also see page 34)
Tr = Room Temperature
rT = Remote Thermostat Control
tP = Touchpad Control
t = Time
Ts = Temperature Setpoint
rF = Room Freeze Condition
Figure 20. Digital Control Indicators
LED
2-Digit Display
Application
9- LED
Inputs
Wireless Remote Control (Optional)
Outputs
The Remote Consists of 10 Push-buttons
The PTAC Digital Control is used to control a PTAC Unit
that includes both an integral air conditioner and a source
of heat.
The Digital Control is operated with a Touchpad.
Indicators
7- Push Buttons
• Indoor Coil Sensor (ICS)
• Indoor Air Sensor (IAS)
• Outdoor Air Sensor (OAS)
• Inputs from Remote Thermostat, RBGYW
• Heat Fan Lock Out Sensor (HFLO)
• Power Supply, 24VAC
• Compressor output (COM)
• Outdoor Fan (FAN)
• Indoor Fan (BLOWER HI, BLOWER LO)
• Damper Control (DAMPER)
• Hydronic Valve (HYV)
Keys and Indicators Labels
7 Push Buttons
ON/OFF, FAN SPEED, FAN MODE, SLEEP, MODE
Temp buttons: Arrow Labels for
Temp UP
and DOWN
SLEEP, COOL, COOL/DRY, FAN, 9 LED Indicators
HEAT, HIGH, LOW, CYCLE, CONT.
LED 2 Digit Displays
• Power:
Functions same as ON/OFF button on the touchpad.
• Sleep:
Functions same as SLEEP button on the touchpad.
Mode Buttons
• Heat, Cool, Cool/Dry, Fan:
Performs same function as the MODE button on the
touchpad, and allows user to select specific mode of
operation using only one button.
+,
–:
• Temp Buttons
Functions same as buttons on touch pad, allowing user to
change the setpoint.
• Fan Speed Buttons (High & Low):
Performs same function as the FAN SPEED button on
the touchpad, allows user to select specific speed using
only one button.
Remote must be aimed in a line of sight of the window
in upper right corner on the front panel, at less than a 45o
angle from center of the window.
The control board will beep when any button is pressed
on the Remote control to confirm signal.
IM 882 / Page 15 of 36
Controls
Standard Digital Touchpad Control
Operation
Memory Recall
The digital control shall start with the last settings used
prior to power down. These settings are saved in a nonvolatile memory. Factory set mode is OFF.
On/Off Triggering
Control can be turned On/Off via the Local User
Interface (LUI), Remote T’stat, or Sleep feature. The
control will show the temperature set point when the
mode is Cool, Cool Dry, or Heat. The display will be
blank in Fan mode.
1. On/Off triggering with LUI
Control shall turn On or Off when the On/Off button is pressed in LUI. Once turned on control shall start on the last mode used before it was turned Off.
2. On/Off triggering with the Remote T’stat
Control shall be turned On if it was Off from the Remote T’stat when it is set up to be controlled by a Remote T’stat. A call for heat or cool from the Remote T’stat will be used to turn the control on. Control remains on until manually turned Off.
3. On/Off triggering with the Sleep feature
Sleep feature works in combination with the Timer setting. Sleep time setting shall be user adjustable from 1 to 15 hours via the Touchpad. The timer will count down and when it reaches “0” it will turn the control Off if control was previously On and vice versa, if it was Off it will turn On after time expires. As mentioned in protections section of this spec the Sleep operation is overridden by room freeze protection.
Control Off
When the control is in the Off Mode, relay outputs will
be disabled with the exception of the indoor fan (blower).
It will stay on to meet the Hot Keep specification.
Indicator LED’s are all off.
IM 882 / Page 16 of 36
Temperature Range
The maximum operating temperature range is selectable
via the Touchpad and is 60°F to 85°F, with the limits
included. The Remote Thermostat selectable operating
range is 60°F to 90°F with limits included. The range is
set in the Configuration Mode.
Indoor and Outdoor Fan Operation
The indoor fan can be set to operate on High or Low
speed with the Fan Speed Button on the touchpad. It
can also be set for Continuous or Cycle operation on the
touchpad. When set for Continuous, the “CONT” LED
will be on and the fan will run continuously. When set
for Cycle, the “CYCLE” LED will be on and the fan will
turn on at a call for heat or cooling.
Fan Cycle Operation
On a call for Heating or Cooling, the indoor fan and
the heating source or the compressor will be activated.
When the call is satisfied and the heating source or the
compressor is deactivated, the indoor fan will repeatedly
run for 2 minutes on and the number of minutes selected
on the PC Board off, until the next cut-in cycle. The
number of cycles with timing as described above is
determined based on the OFF FAN CYCLE jumper
setting on the unit control board.
Remote Thermostat Mode
The unit can be jumper configured on the unit control
board to take commands from a Remote Thermostat. The
Remote Thermostat will call for Heat and Cool through
the electronic controller.
1.
2.
3.
The Remote T’stat will control through the unit control board the work of the compressor, indoor and outdoor fans, the reversing valve, and the heat control valve.
In Cool mode the compressor and condenser fan shall turn on when "Y" signal is high.
Cold start feature (see Modes of Operation – Cold Start), Cool dry mode (see Cold Dry Mode) and Sleep feature (see Sleep Feature) are not available in Remote T’stat cool mode
Controls
Standard Digital Touchpad Control
System Select Operation Using Remote
Thermostat
System will run in Heat mode and engage certain outputs
based on the system selection (jumper) as described
below (see Premium Digital Control Board Wiring
Diagram on page 29).
Notes:
1. Hot start and Sleep features are not available in Remote T’stat
heat mode.
2. Control’s operation is subject to its own protection features when
controlled by a remote thermostat.
3. Indoor fan mode and the speed will default to “cycle” and
“high” when unit is controlled by remote thermostat.
4. The indoor fan is turned on when G signal is high. When there is no signal on G terminal then the indoor fan will be turned off.
Control Lockout Feature
The control is placed in a lockout mode of operation
when Mode button is held pressed for 10 seconds.
Display will show “LC” to confirm Lockout Mode has
been entered. Once in this Lockout Mode the control
board will not take any commands at all. In Lockout, unit
will continue to operate with the settings just prior to
Lockout Mode. This means the touchpad will no longer
be able to pass commands to the control. User’s set point
will normally be displayed. Any button pushed will bring
“LC” on display for five seconds.
To exit the Lockout Mode and return to normal (regular)
mode of operation, press the Mode button for 10
seconds. Display will show “nL” for five seconds to
confirm normal mode has been resumed.
Modes of Operation-Description
Standard Digital Touchpad Control
Cool Mode
In Cool Mode, the compressor will start if the
temperature at the space temperature sensor is 1°F
or higher than the set point. It will stop if the space
temperature sensor is 2°F or lower than the set point,
subject to timing requirements.
In the Cool Mode, the indoor fan will operate according
to the user settings for Fan Mode – Continuous or Cycle
and Speed.
Cold Start
Cold start is initiated when the control has not called
for cooling for more than two (2) hours or during
a power-on-reset. During cold start, the set point is
lowered by 4°F (Tset-4°F) if the differential calls for
cooling. The unit will operate in cold start until the new
set point is satisfied (+ or – 1°F) or until the unit has run
in cold start for at least 20 minutes. After one or both
conditions are met, the set point will be reset to the user
setting and the unit will run in the regular cool mode.
The indoor fan will operate according to the user settings
for mode – Continuous or Cycle and Speed.
Cold start is not available with the Sleep feature.
Sleep Function
Sleep time is adjustable by the user from 1 to 15 hours in
one (1) hour increments in a closed loop. The sleep time
is adjusted and set via the touchpad and by pressing the
Sleep Button repeatedly. On the touchpad, the display
will show the set time in numbers for five (5) seconds.
Before the sleep time expires, the setting can be adjusted
above the number of hours passed by pressing the Sleep
Button. Pressing the On/Off Button can terminate the
Sleep Mode.
A changeover from Heat to Cool or another Mode will
reset the Sleep Timer.
The Sleep Function will raise the temperature setting
one degree fahrenheit every half hour for two hours for
a maximum of four degrees. Changing the Mode or a
changeover from Heat to Cool will reset the Sleep Timer.
The Sleep Function will be deactivated by pressing
the power-on-reset or any button (except sleep) on the
touchpad or the Remote Control.
IM 882 / Page 17 of 36
Modes of Operation-Description
Standard Digital Touchpad Control
Cool Dry Mode
Figure 22. Zone B
Select the Cool Dry Mode when the standard Cool Mode
does not provide sufficient dehumidification. In Cool Dry
Mode, the unit must run in Cool Mode for 12 minutes
or until the temperature differential between the room
temperature and the set point is less than 2°F. This will
also occur after a Cold Start or a Mode change from Cool
to Cool Dry. During this time, the fan will operate in the
Mode and Speed selected.
Until one or both of the above conditions are met,
the control will determine which Dry Mode (Zone) is
initiated based on the temperature differential between
the room temperature (Tr) and the temperature set point
(Ts):
Note: Cool Dry is not available with Sleep Function.
Figure 21. if Tr - Ts > 4°F, operation will be in Zone A
Figure 22. if 2°F < Tr - Ts < 4°F, operation will be in
Zone B
Figure 23. if 0°F < Ts - Ts < 2°F, operation will be in
Zone C
Figure 24. if Ts - Tr > 5°F, operation will be in Zone D
The other temperature ranges are dead bands for zone
stability.
On
Compressor
Off
t
8 mins.
On
Low Fan
Off
t
30 secs.
30 secs.
Figure 23. Zone C
On
Compressor
Off
t
6 mins.
6 mins.
On
Low Fan
Off
t
30 secs.
30 secs.
*
* = Zone Determination Time
Figure 21. Zone A
Figure 24. Zone D
Compressor
On
mins.
Off
t
On
Fan
Off
t
Low Fan
On
Off
*
12 mins.
* = Zone Determination Time
t
On
Off
Compressor
*
12 mins.
* = Zone Determination Time
IM 882 / Page 18 of 36
t
Modes of Operation-Description
Standard Digital Touchpad Control
Heat Mode
Unit will call for heating based on the type of the heat
source it has: heat pump in reverse cycle or electric.
1) Hot Start
Hot Start is possible when the control has not called for
heat in more than (2) hours or during power-on-reset.
During Hot Start, the user’s set point is raised 4°F (Ts +
4°F). The unit will only call for heat if room temperature
differential calls for heat.
The unit will continue in Hot Start Mode until the
new set point is satisfied (with a 1°F differential) or unit has run for at least 20 minutes. After one or
both conditions are met, the set point will be reset
to the user’s setting and the unit will run in regular
heat mode. Hot start is not available with the Sleep
feature. The fan will operate per the Fan Mode and
Speed setting.
2) Hot Keep
When the water valve closes, the indoor fan willoperate
per the user mode (Constant or Cycle) and speed setting.
Sleep Function
Sleep time is user adjustable from 1 to 15 hours in
one (1) hour increments, in a closed loop via the touch
pad, by pressing the Sleep button repeatedly. The
Sleep Mode can be terminated by pressing the On/Off button.
The Sleep Function will lower the temperature setting
one degree fahrenheit every half hour for two hours for
a maximum of four degrees. Changing the Mode or a
changeover from Heat to Cool will reset the Sleep Timer.
The Sleep function will be deactivated by Power-onreset, or by pressing any button on the Touchpad except
Sleep.
Fan Mode
In the Fan Mode, the fan will operate continuously at the user’s speed setting. The compressor and outdoor
fan will not operate. In single motor units, the outdoor
fan will run along with the indoor fan.
Control Board Configuration
To enter the Configuration Mode, simultaneously press
the Up and Down buttons for 5 seconds. To change
settings, press the Up or Down button. To move from one
screen to another, press the Mode button.
To exit Configuration Mode, press the Up and Down
buttons simultaneously for 5 seconds or control will
automatically exit in 15 seconds.
Settings within the Configuration Mode are as follows:
Temperature Scale
To view the Temperature Scale Screen, press and hold
the Up and Down buttons for 5 seconds. The temperature
scale will be displayed. The default setting is degrees
fahrenheit and by pressing either the UP or Down button
can toggle to Degree Celcius.
Temperature Limit Settings
To advance from Temperature Scale Setting, press the
Mode button once. To set the Cool Minimum set point,
press and hold Fan Cycle button and adjust the setting
with the Up or Down buttons. The minimum setting is
60°F.
To set the Heat Maximum set point, press and hold Fan
Speed button and adjust the setting with the Up or Down
buttons. Maximum setting is 85°F.
The Display will show the upper operating limits first.
The default settings are Cool min. = 60°F and Heat max.
= 85°F.
Setting The Outside Air Damper
To view Damper Setting press the Mode button once. To
adjust the damper setting (AU or CL), press the Up or
Down button. AU is the abbreviation for Automatic as
CL is the abbreviation for Closed.
Sensor Readings
By pressing the Mode button repeatedly from the
previous screen, the following will be displayed in
sequence:
• Indoor Air Sensor Reading
• Indoor Coil Sensor Reading
• Outdoor Air Sensor Reading
• Outdoor Coil Sensor Reading
IM 882 / Page 19 of 36
Modes of Operation
Standard Digital Touchpad Control
Indoor Air Sensor Reading
To advance from Damper Setting to Indoor Air Sensor
Reading, press the Mode Button once. The control
readout will show room temperature.
Figure 25. Indoor Air and Indoor Coil Sensor Locations
Indoor
Coil Sensor (ICS)
Indoor
Air Sensor (IAS)
Figure 26. Outdoor Air Sensor Location
Outdoor Air Sensor
(OAS)
Thermistor Failure Code and Condition
The system treats a sensor open or short as extremely
cold or hot and reacts accordingly. The exception is the
room air sensor, in which case the system will turn off.
When the fault is corrected by replacement or repair,
the respective error code will clear from the display (see
Fault & Codes table on page 34).
Compressor Random Restart
When power is interrupted, a random compressor restart
delay of 0 to 2 minutes is initiated. In the Cool Mode only,
the compressor will start operating only after the random
delay plus 2 minutes (minimum off time for thermostat 2
to 4 minutes). Random delay is used only during system
startup or reset.
Unit Protective Logic
Compressor Minimum Run Time
For thermostat-controlled running cycles, the compressor
will have a minimum run time of 90 seconds. The
compressor can be stopped at any time if the system is
switched to any Mode, except the Cool Dry Mode.
Compressor Minimum Off Time
(delay on break)
When compressor is under the thermostat control, it has a
2-minute delay before restarting when it has cycled off.
Anti-freeze Protection
The system is in Anti-freeze Mode when the following conditions are met:
1. The control is in either Cool or Cool/Dry Mode.
2. The indoor coil reaches 30°F and stays there for at
least five (5) minutes.
3. The compressor has run for at least 90 seconds.
Sleep Timer is overridden during this operation. Antifreeze Protection is active in all modes of operation and
when the control is Off.
In Anti-freeze Mode, the compressor and outdoor fan
will stop, the indoor fan will continue to run and the
display will show “CF”.
The compressor and outdoor fan can be started only if the
following conditions are met:
1. after the 2 minute delay on break, AND
2. the indoor coil reaches 49°F or above and remains
there for at least 1 minute, OR
3. another Mode is selected.
Room Freeze Protection
When room temperature falls below 41°F, the damper
motor de-energizes, the hydronic valve is opened and
the indoor fan operates on High Speed. The compressor
and outdoor fan are off and the display will show “rF”.
The hydronic valve will close and the damper motor will
resume normal operation when the room temperature
rises back to 50°F. During room freeze conditions, the
temperature setting can be adjusted with the touchpad.
Fan modes and Sleep Operation are overridden during
Room Freeze Protection. Room Freeze Protection is
active in all modes of operation and when control is off.
Temperature Limiting
IM 882 / Page 20 of 36
When the room temperature drops 5°F below set
point, the display will indicate “Lo.” When the room
temperature rises 5°F above set point, the display will
indicate “hI.” Alarm indications of 5°F above or below
set point will be consistent with the configuration settings
for minimum and maximum temperatures.
Incremental® Startup
Report — Audit
Job Name_ ___________________________________________ City____________________ G.O. #__________________
Installer_ _____________________________________________________________________ Total No. of Units_________
Manufacturers’ Representative Name_____________________________________________
UNIT TYPE
 SuiteII
 Type K
 Type EA  Type J
 Enersaver
Name of Maintenance Manager Instructed_________________________________________
Other
Date of Final Inspection and Start-up_ ____________________________________________
ESSENTIAL ITEMS CHECK
A. Voltage Check_ _____________ Volts (measured)
B. Yes No
Condition
Yes No
Condition


Filters Clean


Operates in Heating


Evaporator Coils/Drain Pans Clean


Operates in Cooling


Wall Boxes Sealed To Wall, No Leaks


Operates in Fan Only (if so equipped)


Wall Box Pitch Satisfactory


Hi-Lo Fan Speed Operational (if so equipped)


Air Discharge Free of Obstruction


Fans Rotate Freely Without Striking Fan Housing


Condenser Air Free of Obstruction


Cycle/Continuous Fan (if so equipped)


Other Conditions Found:_ __________________________________________________________________
_______________________________________________________________________________________
_______________________________________________________________________________________
NOTE: “No” answers above require notice to installer by memorandum (attached copy).
Please include any suggestions or comments:________________________________________________________________
____________________________________________________________________________________________________
____________________________________________________________________________________________________
____________________________________________________________________________________________________
____________________________________________________________________________________________________
Above System is in Proper Working Order
FOR INTERNAL USE
Release:
____________________________________ DATE
SM_____________________
CTS_ ___________________
T_______________________
SIGNATURE FOR SALES REPRESENTATIVE
_ _________________________
SIGNATURE FOR CUSTOMER
SERVICE MANAGER APPROVAL
DATE
FORM No. 13F-1206
IM 882 / Page 21 of 36
Equipment Start-up
Initial start-up of the Incremental® conditioners by
experienced personnel is usually the responsibility of the
installing contractor. This start-up consist of inspecting
and operating the equipment for all functions at the time
of initial installation and making necessary adjustments.
It also includes demonstrating its proper operation to the
owner or his agent.
Note: that unless otherwise specifically agreed to in writing,
McQuay International includes no field labor, start-up
service or the like in the price of its equipment.
After the equipment leaves the factory, it may become
damaged or maladjusted during transportation or on the
job. Sometimes wires are disconnected accidentally or
fan motors move on their bases due to rough handling,
causing fans to strike. The correction of such conditions
is part of start-up.
CAUTION
Before starting equipment, make certain that:
1. Correct voltage has been supplied to the equipment.
2. The electrical plug from the control box has been
inserted into the receptacle.
During Start-up (applies only to standard equipment):
Note:
Direction of conditioner air may be adjusted by repositioning
the discharge grille(s) to change airflow pattern in a room.
The building superintendent or assistant manager should be
requested to make any changes.
IM 882 / Page 22 of 36
Controls
Premium (Programmable) Digital Touchpad
Control Operating Instructions
LED with Program
Setting Display
8- Push Button
Display Inputs
9-LED Indicators
Application
The Premium Digital Control is used to control an
Applied PTAC Unit that includes both an integral air
conditioner and a source of heat.
The Premium Digital Control is operated with a
Touchpad.
Inputs
•
•
•
•
•
•
•
•
•
•
•
•
Indoor coil sensor, (ICS)
Outdoor coil sensor, (OCS)
Indoor air sensor, (IAS)
Outdoor air sensor, (OAS)
Remote T’stat, T’STAT (RCBYWG)
Power supply, (24VAC)
Line voltage input, (L1, L2)
Indoor fan standby voltage, (L1STB L2STB)
Control selection, (LUI, T’STAT
Model selection, (AC/E, HP, HP/E)
Time delay bypass, (TEST)
Indoor off fan cycle, (FAN, OFF CYCLE–10, 20, 30, 1 HR)
Outputs
•
•
•
•
•
Compressor output, COM
Indoor fan, BLOWER LO, HI
Outdoor fan, OUTDOOR FAN
Electric heater, ELE
Reversing valve, REV VALVE
Local User Interface (LUI)
The user will configure the Applied PTAC Digital
Control Board via the touchpad. The user can select with
a jumper on the control board to receive commands from
a Remote Thermostat.
Keys and Indicators Labels
ON/OFF, FAN SPEED, MODE,
FAN MODE, SLEEP, PROG-ON/OFF
for
Temp buttons:
Temp UP and
for Temp DOWN
9 LED Indicators
SLEEP, COOL, COOL/DRY, FAN, HEAT, HIGH, LOW, CYCLE, CONT.
8 Push Buttons
LED 2 Digit Displays No Label
Display Function Legend
Tr = Room Temperature
hI =High Room Temperature
Lo=Low Room Temperature
LA=Low Ambient Lockout
rT = Remote Thermostat Control
tP = Touchpad Control
t = Time
Ts = Temperature Setpoint
Rf = Room Freeze Condition
CF=Coil Freeze Protection
F =Fahrenheit
C =Celsius
LC=Control Lockout - ON
nL=Control Lockout - OFF
Remote Thermostat Control
The Remote Thermostat can be any thermostat that can
interface with an electronic thermostat via RCBWYG
terminals. The Control Selection jumper must be in
T’STAT position. During a call the remote thermostat
will pass R back to the controller on a respective
terminal. The push buttons on the touchpad become
inactive in the remote thermostat mode.However, the
control pad LED display will indicate the mode of
operation, and the room temperature.
IM 882 / Page 23 of 36
Controls
Premium Digital Touchpad Control
Clock Set Menu
1.1
To set the time and day of the week, press FAN
MODE and FAN SPEED buttons simultaneously
for 5 seconds. Time will be displayed first:
AM
9:45
1.2 Adjust the time by pressing
and
buttons.
By holding pressed
or
buttons, time will
change in 15 minutes increments or decrements,
respectively. AM and PM will show in rotation.
1.3 By pressing FAN MODE button, move to the
confirmation day of the week. Numbers represent days of the week, Monday being 1 and so forth.
TODAY will flash on display. Adjust the number
that represents the day of the week by pressing
and
buttons:
TODAY
AM
9:45
1.4 Exit the clock set menu by pressing FAN MODE
(TIME) and FAN SPEED (DAY) simultaneously
for 5 seconds
Configuration
The configuration mode is meant for temperature scale
setting, limits for minimum and maximum operating
temperatures and displaying sensor readings. To enter
the configuration mode hold pressed
and
buttons
for 5 seconds. Moving from one screen to another and
rolling over is done by pressing Mode button.
2.1 Once in the configuration mode, the default
temperature scale will be displayed as shown
below. Toggle the temperature scale to degree
Celsius by pressing either
or
button:
IM 882 / Page 24 of 36
2.2 To adjust the lower operating temperature limit
(cool minimum set point) press
and
buttons. COOL and the setting will be displayed
as shown below. The minimum and factory default
setting is 60°F (15°C). An example of what can be
displayed:
2.3 To view the upper operating temperature limit
(heat maximum set point) press MODE button.
HEAT will be displayed. An example of what can
be displayed:
2.4 To adjust the upper operating temperature limit
(heat maximum set point) press
and
buttons. The max and factory default setting is
85°F (30°C). When Control selection jumper on
control board is set for “T’STAT,” the max setting
can go up to 90°F (32°C).
2.5 By pressing MODE button repeatedly from the
previous screen, the following will be displayed in
sequence:
• Indoor Air Sensor Reading
• Indoor Coil Sensor Reading
• Outdoor Air Sensor Reading
• Outdoor Coil Sensor Reading
2.6 Exit the configuration mode by pressing
buttons for 5 seconds
and
Controls
Premium Digital Touchpad Control
3.1 The touchpad of the electronic controller can be programmed for four time periods, MORN, DAY, EVE, and NITE that are customizable for
each day of the week. Each period will have a start time, heat and cool temperatures. The unit will monitor the day and time, while maintaining the specific conditions for each period of the day. During programming, the item that is flashing is adjustable.
3.2 To enter the program menu, press SLEEP (
and MODE ( ) buttons for 5 seconds.
) 3.3 By pressing SLEEP ( ) display will show the day screen as shown below. Press
or
button to change the day to program. To advance to the next screen, press SLEEP ( ) button. To return to the previous screen, press MODE ( )
button.
DAY 1
3.4 By pressing
or
day will change.
button, the period of the MORN
3.5 To advance to the next screen, press SLEEP ( ) button. Starting time will flash. Adjust the starting time by pressing
or
buttons.
3.7 To advance to the next screen, press SLEEP ( ) button. Cool temperature will be displayed. Adjust the cool setting with and
buttons.
COOL
DAY 1
AM
8:00
MORN
78
o
3.8 To program the thermostat for each period of the day, repeat steps 3.3 through 3.7.
Further, the thermostat can be programmed for each individual day of the week or use the SimplesetTM feature as described below.
3.9 Simpleset programming is a convenient method of programming the thermostat. Once the entire Monday (Day 1) schedule is set, Simpleset programming will copy the Monday schedule to every day of the week. After completing Monday schedule, “day 2” will appear on the
screen. Press Down button once to get to “day 1.”
By pressing Down button for 3 seconds, days of
the week will count down from 7 to 1 and settings
are memorized. Once the schedule is locked in, go
through each day of the week and make changes as
needed. This feature speeds up the programming of
the standard weekday/weekend schedule.
3.10 To exit the program mode, press MODE ( ) and SLEEP ( ) buttons simultaneously for 5 seconds.
3.11 After exiting the program mode, select the mode of operation and activate the program mode by pressing the PROG ON/OFF button.
DAY 1
NOTICE
AM
8:00
MORN
3.6 To advance to the next screen, press SLEEP ( ) button. Heat temperature will be displayed. Adjust the heat setting with
and buttons.
DAY 1
HEAT
AM
8:00
MORN
After a power outage, programmed daily settings will be
retained in memory. However, the clock must be reset to the
current time for the programmed daily settings to resume
the correct schedule of operation. See Clock Set Menu
instructions to reset the time and day of week.
70
o
IM 882 / Page 25 of 36
Controls
Remote Wall Mounted Thermostats
Wall mounted thermostats are available for the Applied
PTAC unit in automatic or manual changeover styles.
All include a fan switch for constant “on” operation or
“automatic” for cycle operation with a call for heat or
cooling. All thermostats are 24-volt type and have dual
Fahrenheit and Celsius temperature setpoint scales.
Non-Programmable Heat/Cool Manual
Changeover Thermostat (107095701)
Simple to operate, single push button for one-stage
heating and cooling, or single stage heat pump. Zone
compatible, and 4- or 5 wire compatible (terminal “C” is
optional for non-heat pump systems). System “heat-offcool” switch and fan “on-off” switch.
7-Day Programmable Manual Changeover
Thermostat (107095801)
Simple, logical programming for set-up and set-back
temperatures and times. Compatible with single-stage
heat pump systems. Enables separate morning, day,
evening, and night settings for every day of the week.
Simpleset™ feature enables easy copying of one day’s
programming for the entire week. Select a warmer or
cooler setting any time to temporarily override any
program setting. Vacation hold overrides programming.
Clear backlit display makes it easy to see time,
temperature and setpoint – even in the dark. No batteries
required.
Figure 28. 7-Day Programmable, Manual Changeover Thermostat (107095801)
Figure 27. Non-Programmable Thermostat (107095701)
Specifications
Specifications
Electrical Rating:
•
•
•
•
24 VAC (18 to 30 VAC)
1 amp maximum per terminal
3 amp maximum total load
60-minute power backup (SC2001)
Temperature Control Ranges:
•
45oF to 90oF, Accuracy: ±1oF
System Configurations:
•
1 stage heat, 1 stage cool or single stage electric heat pump
Terminations:
•
R, C, W, Y, O, B, G
IM 882 / Page 26 of 36
Electrical Rating:
•
•
•
•
•
24 VAC (18 to 30 VAC)
1 amp maximum per terminal
3 amp maximum total load
60-minute power backup (SC3001)
Easy access terminal block
Temperature Control Ranges:
•
45oF to 90oF, Accuracy: ±1oF
System Configurations:
•
Single stage heat, single stage cool or single stage electric heat pump
Terminations:
•
RC, RH, C, W, Y, O, B, G
7-Day Programmable Automatic Changeover
Thermostat (107095901)
Simple, logical programming for set-up and set-back
temperatures and times. Compatible with single-stage
heat pump systems. Enables separate morning, day,
evening, and night settings for every day of the week.
Simpleset™ feature enables easy copying of one
day’s programming for the entire week. Automatically
switches between heating and cooling modes. A/C and
heat pump modes – 4-minute time delay to protect
compressor after it turns off. Vacation hold overrides
programming. Lockout feature prevents unwanted
tampering. Clear backlit display makes it easy to see
time, temperature and setpoint – even in the dark. No
batteries required. Optional remote temperature sensor
available.
Thermostat Dimensions – 107095701,
107095801, 107095901
Figure 29. 7-Day Programmable Thermostat
(107095901), and optional remote sensor
(107096001)
Specifications
Electrical Rating:
•
•
•
•
24 VAC (18 to 30 VAC)
1 amp maximum per terminal
4 amp maximum total load
60-minute power backup for clock
Temperature Control Ranges:
•
45oF to 90oF, Accuracy: ±1oF
System Configurations:
•
Single stage heat, single stage cool or single stage electric heat pump
Terminations:
•
RC, RH, C, W, Y, O, B, G
IM 882 / Page 27 of 36
Remote Thermostat Control
The Remote Thermostat can be any thermostat that can
interface with an electronic thermostat via RCBWYG
terminals. The Control Selection jumper must be in
T’STAT position. During a call the remote thermostat
will pass R back to the controller on a respective
terminal. The push buttons on the touchpad become
inactive in the remote thermostat mode. However, the
control pad LED display will indicate the mode of
operation, and the room temperature.
Installation of Remote Mounted Thermostat
Units that are furnished with remote mounted
thermostats should be wired as shown in Figure 30.
Other considerations for this arrangement are as
follows:
1. When wiring the low voltage plug and receptacle disconnect, provide enough wire to move harness out of the way for chassis removal.
2. If subbase is used, a small hole must be drilled and grommeted in the subbase front to allow passage of the low voltage wires.
3. If secondary units are to be employed, see
connections in Figure 30. The number of secondary
units that can be connected is limited to 32 units.
4. When using a programmable wall thermostat, connect it to the terminal board remote thermostat
plug. Refer to the instructions furnished with the
chosen thermostat.
Figure 30. Remote Thermostat With Primary/Secondary Unit Wiring Connections
IM 882 / Page 28 of 36
Premium (Programmable)
Digital Contol Wiring Diagram
1– Jumper Placement to Select System Module (See Jumper Detail)
A– Place jumper across AC/HYD to select Air Conditioner/Hydronic Heat.
B– Place jumper across AC/E to select Air Conditioner/Electric Heat.
C– Place jumper across AC/HYD/E to select Air Conditioner/Hydronic/Electric.
D– Place jumper across HP to select Heat Pump.
E– Place jumper across HP/E to select
Heat Pump/Electric.
2– Jumper Placement to Select Fan Control:
A– When in Fan Cycle Mode, fan operates for
2 minutes – Place jumper across
10, 20, 30, or 1 HR to select fan cycle off minutes which will be overridden by the room temperature.
3– Jumper Placement to Select
Controller Type:
A– Place jumper across LUI to select unit mounted touchpad (Local User Interface).
B– Place jumper across SEC (Secondary) to select Control by a master unit.
C– Place jumper across T’STAT to select remote, wall mounted programmable, or non-programmable thermostat.
4– Jumper Placement to Select
Hydronic Valve:
A– Place jumper across NO to select Normally Open Hydronic Valve.
B– Place jumper across NC to select Normally Closed Hydronic Valve.
Jumper Placement Detail
3
1
A
A
B
C
D
E
C
B
2
4
A
B
A
Wiring Diagram Legend
CT
=
DM =
CM =
IFM =
OFM =
HFLO =
OCS =
OAS =
ICS =
IAS =
LUI =
HYV =
REV =
Control Transformer
Damper Motor
Compressor Motor
Indoor Fan Motor
Outdoor Fan Motor
Heat Fan Lockout Sensor
Outdoor Coil Sensor
Outdoor Air Sensor
Indoor Coil Sensor
Indoor Air Sensor
Local User Interface
Hydronic Valve
Reversing Valve
EHC = Eletric Heat Contactor
IM 882 / Page 29 of 36
Wiring Diagrams
Premium (Programmable) Digital Control Board
Legend
DM =
HYV =
CM =
IFM =
OFM =
HFLO =
OCS =
OAS =
ICS =
IAS =
LUI =
REV =
IR
=
C1
=
C2
=
C3
=
MP =
IM 882 / Page 30 of 36
Damper Motor
Hydronic Valve
Compressor Motor
Indoor Fan Motor
Outdoor Fan Motor
Heat Fan Lockout Sensor
Outdoor Coil Sensor
Outdoor Air Sensor
Indoor Coil Sensor
Indoor Air Sensor
Local User Interface
Reversing Valve
IR Receiver Board (AP7810)
Indoor Motor Capacitor
Outdoor Motor Capacitor
Compressor Capacitor
Motor Protector
Wiring Diagrams
Premium (Programmable) Digital Control Board with Standby
Legend
DM =
HYV =
CM =
IFM =
OFM =
HFLO =
OCS =
OAS =
ICS =
IAS =
LUI =
REV =
IR
=
C1
=
C2
=
C3
=
MP =
Damper Motor
Hydronic Valve
Compressor Motor
Indoor Fan Motor
Outdoor Fan Motor
Heat Fan Lockout Sensor
Outdoor Coil Sensor
Outdoor Air Sensor
Indoor Coil Sensor
Indoor Air Sensor
Local User Interface
Reversing Valve
IR Receiver Board (AP7810)
Indoor Motor Capacitor
Outdoor Motor Capacitor
Compressor Capacitor
Motor Protector
IM 882 / Page 31 of 36
Maintenance (Scheduled)
Incremental conditioners are built to last. With proper
care, the unit should provide uninterrupted service for
many years. Scheduled maintenance of this equipment as
described below is the key to the equipment’s longevity.
A. Air filters must be cleaned at regular intervals. Twice annually may be adequate in some areas while twice monthly may be required in others. Areas with high dirt and lint content or heavy usage of units require more frequent filter maintenance than those areas of relatively clean operating or low usage conditions. Unit malfunction will occur if air filters are not kept clean. Rinse filter with hot water and a mild detergent.
B. McQuay recommends that every year the chassis be removed for a thorough checkup. This should be completed as follows:
1. Unplug unit from power source.
2. Remove front panel.
3. Remove chassis from cabinet and move it to the maintenance department. Replace with spare chassis or weather plate.
4. Check all seals and insulation and repair as required.
5. Check all wiring and controls for hazardous conditions.
6. Thoroughly clean discharge grilles.
7. Cover motors and control module with water tight material and wash evaporator coil, condenser coil and base pan using hot water and a mild soap.
CAUTION
Residential and institutional cleaning compounds can cause
permanent damage to the packaged terminal unit. To avoid
damage to unit controls and heat transfer surfaces, do
not spray cleaning compounds onto the discharge grille,
return air opening, or unit controls. Normal cleaning can
be accomplished by wiping the unit surface with a damp
cloth. When using cleaning compounds on carpets, floors or
walls, turn the unit off to avoid drawing potentially damaging
vapors into the package terminal unit.
8. Check condensate removal system and assure proper operation. Pour at least two (2) cups of water into evaporator drain pan and verify proper operation. Clean condensate drain and clear weep holes located at the bottom rear of wall sleeve.
9. Dry equipment thoroughly, especially electric parts and installation.
10. Clean any rust spots with steel wool and paint with rust inhibiting paint.
11. Clean insulation or replace if necessary.
12. Check insulation on refrigeration piping and replace if necessary.
13. Check all fasteners and tighten as required.
14. Clean and oil damper door and linkage.
15. Test run chassis before reinstalling.
Equipment Protection From The
Environment
The metal parts of this unit may be subject to rust or
deterioration in adverse environmental conditions. This
oxidation could shorten the equipment’s useful life. Salt
spray, fog or mist in seacoast areas, sulphur or chlorine
from lawn watering systems, and various chemical
contaminants from industries such as paper mills and
petroleum refineries are especially corrosive.
If the unit is to be installed in an area where
contaminants are likely to be a problem, special
attention should be given to the equipment location
and exposure.
1 Avoid having lawn sprinkler heads spray directly in
or on the outdoor louver.
2 In coastal areas, the units must have the corrosion
protection package to maintain the warranty
coverage.
Regular maintenance will reduce the buildup of
contaminants and help to protect the outdoor section
of the unit.
1
2
3
Frequent washing of the outdoor section, condenser fan blade and condenser coil with fresh water will remove most of the salt or other contaminants that build up in the outdoor section of the unit
Regular cleaning of the cabinet with a good non-
abrasive polish will provide protection and keep it in good condition.
A mild liquid cleaner may be used several times a
year to remove matter that will not wash off with
water.
The best protection is frequent cleaning, maintenance
and minimal exposure to contaminant.
IM 882 / Page 32 of 36
Maintenance
An inherent advantage of the Incremental system is
that failure of any part affects only one incremental
conditioner and does not interrupt the operation of the
rest of the system. A further advantage is that a failed
part can be quickly and easily replaced, thus minimizing
the inoperative time of the equipment. This is so,
however, only if a replacement part is quickly available.
In order to replace a failed part quickly and keep all
incremental conditioners in good operating condition,
McQuay International recommends that at the time
incremental conditioners are purchased, owners arrange
for a small stock of replacement parts.
Where an owner carries such a stock, immediate
replacement of defective parts is possible. The defective
part can then be returned to McQuay warranty parts. As
long as it is still in warranty, it is repaired or replaced
and returned to the owner with out cost for shop labor
and material. Thus, the stock of replacement parts is
constantly replenished. Below is a list of the kinds
of parts which McQuay International recommends to
be carried in stock together with the quantity of parts
recommended per 100 incremental conditioners installed.
Cooling Chassis........................................................... 1
Compressor Overload Device...................................... 1
Compressor Running Capacitor................................... 1
Evaporator Fan Motor.................................................. 1
Condenser Fan Motor.................................................. 1
Damper Switch............................................................. 2
Thermostat................................................................... 2
Control Relay (if used)................................................. 1
Damper Motor (if used)............................................... 2
Touch-up Paint (1 pt. spray can).................................. 1
Refrigeration Cycle
Every motor-driven refrigeration system operates on
the carnot cycle. A practical understanding of what goes
on at the various steps in this cycle can be a big help
to the troubleshooting mechanic. Figure 31 illustrates
the refrigeration cycle. The diagram shows what occurs
in each component of a hermetically sealed system
as used in all McQuay Air Conditioning equipment.
The temperatures shown are typical of what they
might be when the air entering the condenser (outdoor
temperature) is 95°F, (350 C) and the temperature of the
conditioned space is 80°F (270 C).
Figure 31. Refrigeration Cycle
45°F. (7°C.)
R22 (Liquid and Gas)
to Evaporator
80°F. (27°C.)
Room Air to Evaporator
Evaporator
120°F. (49°C.) Condenser Air
to Outdoors
Capillary
Restrictor
Condenser
110°F. (43°C.)
Liquid R22 to
Capillary
95°F. (35°C.)
Outdoor Air to Condenser
60°F. (15.5°C.)
Conditioned Air to Room
60.3 psia (416 kPa)
& 60°F. (15.5C.)
to Compressor (Gas)
Hermetic
Compressor
285.3 psia (1967.7 kPa) R22 to Condenser (Hot5 Gas)
Recommended Spare Parts
For the current spare parts list, and applicable prices, see
your McQuay representative or write McQuay Service,
P.O. Box 1551, Minneapolis, MN 55440.
IM 882 / Page 33 of 36
Fault and Protection Codes for Applied PTAC/PTHP Control Board
Fault code
Description
Cause for the fault
CE
Communication Error
1. Cable not plugged in properly on either LUI or relay board.
2. Defective cable.
Sh
Missing Shunt The user configurable shunt for System Select, Control Select Off Fan Cycle, and/or Hydronic Valve is missing or not placed properly.
E1
Problem with IAS
Indoor Air Sensor missing or short.
E2
Problem with ICS
Indoor Coil Sensor missing or short.
E3
Problem with OCS
Outdoor Coil Sensor missing or short.
E4
Problem with OAS Outdoor Air Sensor missing or short.
E5
Problem with HFLO Sensor
HFLO Sensor missing or short on AP7809.
Protection Description
code
CF
Coil Freeze Protection
Indoor coil temperature has been below 30ºF for 5 minutes.
Protection feature and the displayed code are dismissed when indoor coil temperature rises above 49ºF.
Rf
Room Freeze Protection
Indoor air temperature has dropped below 41ºF. Protection feature and the displayed code are
dismissed when indoor room temperature rises at and above 50ºF.
hI
High Room Temperature
Indoor air temperature is 5 degrees above maximum setpoint limit. Protection feature and the displayed code are dismissed when indoor coil temperature rises above 50ºF.
Cause for the fault
Lo
Low Room Temperature
Indoor air temperature is 5 degrees below minimum setpoint limit.
LA
Low Ambient Lockout
Outdoor air temperature is below 35ºF.
Solid State Digital Controls – Local User Interface Display Codes
Fault code
Description
Cause for the fault
LC
Control Lockout –
Displays for 5 seconds when any button is pushed when in the "lockout mode".
nL
Control Lockout – Normal Control
Displays for 5 seconds to confirm normal mode of operation when control lockout turned off. CL
Damper Closed
Control setup indicator damper is in "closed" mode.
AU
Auto Damper
Control setup indicator damper is in "automatic" mode.
AU
Auto HP/E
Control setup indicator heat pump electric is in automatic changeover mode (HP/E).
bY
HP/E Bypass
Control setup indicator, electric heat is bypassed when OCS > 40˚.
CF
Coil Freeze Protection
Indoor coil is ≤ 30˚ for at least 5 minutes. Compressor and outdoor fan stop and indoor fan continues
to run for active defrost.
rF
Room Freeze Protection
Room temperature < 41˚. Damper closes (Premium board) and unit goes into heat mode.
Lo
Coil freeze protection
Room temperature is 5˚ below set point.
Hi
Temperature Limiting
Room temperature is 5˚ above set point.
LA
Low Ambient Lockout
Unit is in cooling mode and outdoor air < 35˚. Compressor will cut out.
E1
Indoor Air Sensor
Indoor Air Thermister Failure.
E2
Indoor Coil Sensor
Indoor Coil Thermister Failure.
E3
Outdoor Coil Sensor
Outdoor Coil Thermister Failure.
E4
Outdoor Air Sensor
Outdoor Air Thermister Failure.
IM 882 / Page 34 of 36
Troubleshooting
Trouble
These items should be checked by a qualified service technician only.
1. Blowers won’t operate on cool
2. Blowers operate on cool but compressor
does not start
Cause
a.
No power
Cure
b. Faulty push-button switch
c. Loose connections at push-button switch
a. Check supply line fusses, circuit breakers, and be sure
the power is on. Blown fuses would indicate circuit overloading, a short circuit, or a ground condition in the circuit
Voltage supply to the equipment should be checked.
Voltage underload must be within 10% of voltage given
on date plate.
b. Replace.
c Tighten.
a. b. c. d. e. f. g. h. i. Thermostat set too high.
Heat valve is open and heat is on.
Low voltage.
Faulty push-button switch.
Faulty connection at push-button switch.
Defective wiring to thermostat.
Loose connections at compressor terminals.
Wiring to compressor terminals defective.
Loose connections in compressor overload device.
a. b. c. d. e. f. g. h.
i. j. Starting capacitor malfunctions (open circuited, short
circuited or loss of capacity).
Defective compressor motor (short circuited, open
circuited, grounded).
k. * Ship cooling chassis prepaid to nearest McQuay authorized warranty station.
k.
Adjust Rotate control knob to “Cooler.”
Close heat valve.
Check as above.
Replace.
Tighten.
Replace.
Tighten.
Replace.
Tighten.
j. Replace.
3. Blowers run on cool and compressor starts but stops
after a short interval.
a. Operation of overload device due to overloading compressor motor.
a. Check voltage supply. Clean condenser inside and out.
Check at outside face of condenser for recirculation of
condenser air. Put air “splitters” in, if missing. Check compressor for short circuit. If defective, ship cooling chassis
to nearest McOuay authorized warranty station.
4.
a. Low voltage due to overload circuits within building or
throughout the local power system. Due to varying power
demands, this condition might exist only at certain times
during the day or on very hot days.
b. High voltage due to fluctuations in local power system;
usually occurs during low load periods of the day
c. Partial short circuit in compressor motor. Under normal
loading a compressor with a partial short circuit might
appear to be operating all right; increased condensing
air temperature might then cause a short.
a. Run separate electric line to equipment Consult local
power company.
a. b. c. d. e. a. b. c.
d. e. 5.
Blowers run on cool and compressor starts and runs, but
compressor occasionally stops (on overload device).
Compressor starts and runs on cool but
blowers do not run.
6. Compressor starts and runs on cool, but fan motor starts,
then stops.
Faulty push button switch.
Open circuited blower motor.
Blower rubbing against its housing.
Bearings on blower motor seized.
Loose connection at push-button switch.
b.
Consult local power company.
c. If confirmed, ship cooling chassis prepaid to nearest
McOuay authorized warranty station.
Replace.
Replace.
Adjust blower motor or blower wheel position.
Replace motor
Tighten.
a. Operation of the internally connected overload device
due to a short circuit in blower motor.
a. Replace motor
b.
b. Adjust blower wheel or motor, or replace.
Windings, rubbing of blower wheel or lack of lubrication
in blower motor bearings.
7. Equipment gives electrical shock.
a. Grounded electrical circuit.
a.
8. Insufficient cooling capacity.
a. Equipment standing too long without being run.
a. If the air conditioner is allowed to stand for an extended
length of time without being run on cool, it is possible for
all the refrigerant to become absorbed in the oil inside the
compressor and refrigeration circuit. If this should happen there will be no cooling until the necessary working
pressures have been established. This will take about 5
minutes of continuous running.
b.
1) Clean.
2) Remove obstructions.
3) Check same as in the case of malfunctioning condenser air blower.
4) Check for correct voltage. Replace blower motor if necessary
5) Adjust blower position and tighten setscrews.
6) Correct as in No 3 above.
c.
1) Clean.
2) Turn equipment off to let ice melt (see last two items of No. 9 “Too much cooling,” on page 15.
3) Clean or replace.
4) Remove obstructions.
5) Check as in No.1.
6) Check for correct voltage. Replace motor if necessary.
7) Adjust blower wheel position and tighten setscrew
d. Refer to original load calculations, recalculate heat load.
e. Close them.
f. * Ship prepaid to nearest McQuay warranty
station.
b. Insufficient airflow through condenser due to:
1) Dirty condenser.
2) 0bstructed louver on outer cabinet or wall box.
3) Condenser blower/fan not running.
4) Condenser blower/fan not up to speed.
5) Condenser blower/fan slipping on motor shaft.
6) Recirculation of condenser air.
c. Insufficient airflow through evaporator due to:
1) Dirty evaporator.
2) Ice on evaporator coils.
3) Dirty air filter.
4) Obstructed discharge grilles.
5) Evaporator blower motor not running.
6) Evaporator blower motor not up to speed.
7) Evaporator motor slipping on motor shaft.
d. Heat load in room exceeds capacity of equipment.
e. Windows and doors in room are open
f. Compressor not pumping, indicated by:
1) Low wattage.
2) Condenser not warm, evaporator only
partially cool or not at all .
g. Restricted capillary or strainer.
1 ) Frost on capillary or strainer
2) Low wattage.
3) Condenser not warm.
4) Evaporator partially frosted, only partially cool or not at all.
g.
Eliminate ground.
* Ship prepaid to nearest McOuay warranty
station.
IM 882 / Page 35 of 36
Troubleshooting
9.
Trouble
Too much cooling.
These items should be checked by a qualified service technician only.
Cause
Cure
a. Thermostat set too low.
b. Defective thermostat
a. Adjust.
b. Replace.
a. Condensate drain from evaporator to condenser
plugged.
b. Insulating seals on equipment damaged.
c. Evaporator blower motor not up to speed.
d. Evaporator blower incorrectly positioned.
a. Remove obstructions to water flow.
11. Blowers won’t operate on Heat.
a. b. c. d. e. a. b. c. d. e. 12. Equipment is noisy.
a. Blower rubbing against enclosure.
10. “Sweating.”
b. c.
d. e. f. No power.
Heat is off (equipment with heat fan lock out).
Faulty push-button switch.
Loose connections at push-button switch.
Thermostat set too low.
Blower motor bearings dry.
Loose blower hold-down nuts on motor-bracket
assembly
Refrigerant absorbed in compressor oil after extended
shutdown.
Equipment improperly installed.
Damper solenoid hums.
g. Loose terminal box cover on side of compressor.
h. Loose electrical components.
i. Copper tubing vibrating.
j. 13. Insufficient or no heat.
Harmonics.
a. No steam or hot water being applied.
b. No power.
c. d. e. f.
g. h. Faulty push-button switch.
Loose connection at push-button switch.
Thermostat set too high.
Thermostat faulty.
No power output on transformer secondary.
Inoperative valve.
1) Steam valve N/C.
2) Hot water valve N/C.
b. Adjust or replace.
c. Check for correct voltage. Replace motor if necessary.
d. Tighten.
See No. 1.
Open heat valve or turn on heating system.
Replace.
Tighten.
Adjust. Rotate control knob to “warmer”.
a. Adjust fan position on motor shaft or reposition fan
motor bracket assembly.
b. Replace motor.
c. Align blower assembly and tighten nuts.
d. Noise will disappear after equipment runs awhile.
e. Make necessary adjustments to components.
f. Check for proper adjustment. Apply silicone oil or
grease to gap between solenoid and armature.
g. Tighten.
h. Fasten securely.
i. Occasionally equipment will have noise for no apparent reason. Inspection has revealed no loose
components that might be the source of the noise.
Due to the action of the compressor, it is possible to
have internal noise develop if the refrigerant tubing has
become bent even slightly. To distinguish this condition
from the simple rattle producing vibration caused by
loose screws, nuts and other components, grasp the
refrigerant tubing at various points throughout the system until a point is found where the noise is eliminated
or reduced. Bend the copper
tubing very gently until the noise disappears.
j. Tighten.
a. Contact building management.
b. Check power supply line fuse, circuit breakers. Blown
fuses would indicate circuit overloading, a short circuit,
or a grounded condition in the circuit.
c. Replace.
d. Replace wire or tighten.
e. Adjust. Rotate knob to “warm.”
f. Replace.
g. Replace.
h.
1) Temporarily lock valve open; replace.
2) Replace.
Notes:
This guide was prepared with standard equipment in mind. If equipment is special, it may not be entirely applicable.
* If equipment is still in warranty.
** Note: Before trying to correct the noise, determine its cause such as conditioned air blower, compressor or condenser blower. Operate the conditioned air blowers only. If this doesn’t cause the noise, operate on cooling. Then disconnect one compressor lead. If the noise stops, the compressor is the source, If not, it is caused by the condenser blower.
This document contains the most current product information as of this printing. For the most up-to-date
product information, please go to www.mcquay.com.
®
©2008 McQuay International • www.mcquay.com • 800-432-1342
IM 882 / Page 36 of 36 (Rev 1-08)