Page 1
INSTALLATION INSTRUCTIONS
WALL MOUNTED
PACKAGE HEAT PUMPS
Model
SH611
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead just as planned.
Manual : 2100-411G
Supersedes: 2100-411F
File: Volume III Tab 17
Date: 09-26-07
Manual 2100-411G
Page 1 of 23
Page 2
CONTENTS
Getting Other Information and Publications
For More Information ............................................... 3
Wall Mount General
Heat Pump Wall Mount Model Nomenclature....... 4
Shipping Damage ................................................. 6
General .............................................................. 6
Duct Work.......................................................6 & 7
Filters .............................................................. 7
Fresh Air Intake..................................................... 7
Condensate Drain – Evaporator ........................... 7
Installation Instructions
Wall Mounting Information .................................... 8
Mounting the Unit.................................................. 8
Wiring – Main Power........................................... 13
Wiring – Low Voltage Wiring ............................... 13
Optional Outdoor Thermostat Applications ......... 14
Low Voltage Connections ................................... 16
Start Up
Important Installer Note....................................... 17
Crankcase Heaters ............................................. 17
High Pressure Switch ......................................... 17
Three Phase Scroll Compressor St art Up........... 17
Phase Monitor..................................................... 18
Service Hints....................................................... 18
Sequence of Operation....................................... 18
Pressure Service Ports ....................................... 18
Defrost Cycle ...................................................... 19
Troubleshooting
Solid State Heat Pump Control
Troubleshooting Procedure................................. 20
Checking Temperature Sensor
Outside Unit Circuit............................................. 21
Temperature vs. Resistance of Temperature ...... 21
Fan Blade Setting Dimensions ........................... 22
Removal of Fan Shroud...................................... 22
Refrigerant Charge ............................................. 22
Pressure T ables.................................................. 23
Figures
Figure 1 Unit Dimensions .................................. 5
Figure 2 Fresh Air Damper Assembly ................ 7
Figure 3 Mounting Instructions .......................... 9
Figure 4 Electric Heat Clearance..................... 10
Figure 5 Wall Mounting Instructions................. 11
Figure 6 Wall Mounting Instructions................. 11
Figure 7 Common W all Mounting Inst allations. 12
Figure 8 Unit 24V Terminal Board.................... 13
Figure 9 Compressor Cutoff and Outdoor
Thermostat Wiring ............................. 14
Figure 10 Compressor Cutoff and Outdoor
Thermostat Wiring ............................. 14
Figure 11 Electric Heat Hold Off Wiring ............. 15
Figure 12 Electric Heat Hold Off Wiring ............. 15
Figure 13 Start Up Procedure Decal.................. 17
Figure 14 Defrost Control Board........................ 19
Figure 15 Fan Blade Setting .............................. 22
Tables
Table 1 Electric Heat Table................................ 4
Table 2 Electrical Specifications ........................ 6
Table 3 Thermostat Wire Size ......................... 13
Table 4 Wall Thermostat .................................. 16
Table 5 Troubleshooting.................................. 20
Table 6 Fan Blade Dimensions........................ 22
Table 7 Refrigerant Charge ............................. 22
Table 8 Rated CFM and Rated ESP ............... 22
Table 9 Indoor Blower Performance ................ 22
Table 10 Maximum ESP of Operation ............... 22
Table 11 Pressure Table - Cooling .................... 23
Table 12 Pressure Table - Heating .................... 23
Manual 2100-411G
Page 2 of 23
Page 3
Getting Other Information and Publications
These publications can help you install the air
conditioner or heat pump. You can usually find these at
your local library or purchase them directly from the
publisher. Be sure to consult current edition of each
standard.
National Electrical Code ...................... ANSI/NFPA 70
Standard for the Installation .............. ANSI/NFPA 90A
of Air Conditioning and Ventilating Systems
Standard for Warm Air ...................... ANSI/NFPA 90B
Heating and Air Conditioning Systems
Load Calculation for ............................ACCA Manual J
Residential Winter and Summer Air Conditioning
Duct Design for Residential .............. ACCA Manual D
Winter and Summer Air Conditioning and Equipment
Selection
FOR MORE INFORMATION, CONTACT
THESE PUBLISHERS:
ACCA Air Conditioning Contractors of America
1712 New Hampshire Ave. N.W.
Washington, DC 20009
Telephone: (202) 483-9370
Fax: (202) 234-4721
ANSI American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: (212) 642-4900
Fax: (212) 302-1286
ASHRAE American Society of Heating, Refrigerating,
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: (404) 636-8400
Fax: (404) 321-5478
NFPA National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: (800) 344-3555
Fax: (617) 984-7057
Manual 2100-411G
Page 3 of 23
Page 4
WALL MOUNT GENERAL INFORMATION
HEAT PUMP WALL MOUNT MODEL NOMENCLATURE
SH 61 1 – A 08 X X X X X B
MODEL NUMBER
CAPACITY
61 - 5 ton
VENTILATION OPTIONS
X - Barometric Fresh Air Damper (Standard)
B - Blank-off Plate
M - Motorized Fresh Air Damper
V - Commercial Room Ventilator-Spring Return w/Exhaust
P - Commercial Room Ventilator-Power Return w/Exhaust
E - Economizer (Internal) - Fully Modulating w/Exhaust
R - Energy Recovery Ventilator - Independent Intake/Exhaust Control
REVISIONS
VOLTS & PHASE
A - 230/208/60/1
B - 230/208/60/3
C - 460/60/3
KW
COLOR OPTIONS
X - Beige (Standard)
4 - Buckeye Gray
OUTLET OPTIONS
X - Front (Standard)
FILTER OPTIONS
X - 1-Inch Throwaway (Standard)
W- 1-Inch Washable
P - 2-Inch Pleated
COIL OPTIONS
X - Standard
1 - Phenolic Coated Evaporator
2 - Phenolic Coated Condenser
3 - Phenolic Coated Evaporator
NOTE: All vent options are without exhaust capability. May require separate field supplied barometric relief in building.
CONTROL
MODULES
and Condenser
TABLE 1
ELECTRIC HEAT TABLE
sledoMA-116HSB-116HSC-116HS
1-0421-8023-0423-8023-064
WKAUTBAUTBAUTBAUTBAUTB
5
8
9
01
02
8.02560711.8100821
3.33082728.8205402
7.12006037.81030328.0100703
6.14031432.6300652
2.38062864.2700215
Manual 2100-411G
Page 4 of 23
Page 5
FIGURE 1
UNIT DIMENSIONS
SH611
Manual 2100-411G
Page 5 of 23
Page 6
TABLE 2
ELECTRICAL SPECIFICATIONS
TIUCRICELGNIS TIUCRICLAUD
3
.oN
detaR
&stloV
ledoM
Z0A,00A-116HS
50A
80A
01A
02A
Z0B,00B-116HS
90B
Z0C,00C-116HS
90C
1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.
2 Based on 75°C copper wire. All wiring must conform to NEC and all local codes.
3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric
Code (latest revision), article 310 for power conductor sizing.
CAUTION: When more than one field power conductor circuit is run through one conduit, the conductors must be derated.
Pay special attention to note 8 of table 310 regarding Ampacity Adjustment Factors when more than 3 conductors
are in a raceway.
esahP
3-064
3-064
dleiF
rewoP
stiuriC
1-802/032
1
1-802/032
1-802/032
1-802/032
1-802/032
1-802/032
1-802/032
2ro1
2ro1
2ro1
2ro1
1
1
1
1
25
47
88
89
011
63
06
81
23
1
muminiM
tiucriC
yticapmA
06
05
07
52
53
2
mumixaM
lanretxE
roesuF
tiucriC
rekaerB
6
001
011
021
021
4
3
3
2
8
6
8
2
dleiF
rewoP
eriW
eziS
01
eriW
eziS
01
8
6
6
6
01
01
01
01
3
muminiM
tiucriC
dnuorG
yticapmA
.tkC
.tkC
A
B
---
---
25
62
25
24
25
25
85
25
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1
mumixaM
lanretxE
roesuF
tiucriC
rekaerB
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A
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06
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2
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eziSeriW
.tkC
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A
B
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6
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6
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6
6
6
6
---
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2
dnuorG
eziSeriW
.tkC
.tkC
A
B
---
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01
01
01
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01
01
01
01
---
---
---
---
--
---
---
---
SHIPPING DAMAGE
Upon receipt of equipment, the carton should be
checked for external signs of shipping damage. If
damage is found, the receiving party must contact the
last carrier immediately, preferably in writing,
requesting inspection by the carrier’s agent.
GENERAL
The equipment covered in this manual is to be installed
by trained, experienced service and installation
technicians.
The refrigerant system is completely assembled and
charged. All internal wiring is complete.
The unit is designed for use with or without duct work.
Flanges are provided for attaching the supply and return
ducts.
These instructions explain the recommended method to
install the air cooled self-contained unit and the
electrical wiring connections to the unit.
These instructions and any instructions packaged with
any separate equipment, required to make up the entire
air conditioning system should be carefully read before
beginning the installation. Note particularly “Starting
Procedure” and any tags and/or labels attached to the
equipment.
Manual 2100-411G
Page 6 of 23
While these instructions are intended as a general
recommended guide, they do not supersede any national
and/or local codes in any way. Authorities having
jurisdiction should be consulted before the installation is
made. See Page 3 for information on codes and
standards.
Size of unit for a proposed installation should be based
on heat loss calculation made according to methods of
Air Conditioning Contractors of America (ACCA). The
air duct should be installed in accordance with the
Standards of the National Fire Protection Association
for the Installation of Air Conditioning and Ventilating
Systems of Other Than Residence Type, NFPA No.
90A, and Residence Type Warm Air Heating and Air
Conditioning Systems, NFPA No. 90B. Where local
regulations are at a variance with instructions, installer
should adhere to local codes.
DUCT WORK
Any heat pump is more critical of proper operating
charge and an adequate duct system than a straight air
conditioning unit. All duct work, supply and return,
must be properly sized for the design airflow
requirement of the equipment. Air Conditioning
Contractors of America (ACCA) is an excellent guide to
proper sizing. All duct work or portions thereof not in
the conditioned space should be properly insulated in
order to both conserve energy and prevent condensation
or moisture damage.
Page 7
Design the duct work according to methods given by the
Air Conditioning Contractors of America (ACCA).
When duct runs through unheated spaces, it should be
insulated with a minimum of 1-inch of insulation. Use
insulation with a vapor barrier on the outside of the
insulation. Flexible joints should be used to connect the
duct work to the equipment in order to keep the noise
transmission to a minimum.
A 1/4 inch clearance to combustible material for the
first three feet of duct attached to the outlet air frame is
required. See Wall Mounting Instructions and Figures
3, 4, 5 and 6 for further details.
Ducts through the walls must be insulated and all joints
taped or sealed to prevent air or moisture entering the
wall cavity.
Some installations may not require any return air duct.
A metallic return air grille is required with installations
not requiring a return air duct. The spacing between
louvers on the grille shall not be larger than 5/8 inch.
NOTE: If no return air duct is used, applicable
installation codes may limit this cabinet to
installation only in a single story structure.
Any grille that meets with 5/8 inch louver criteria may
be used. It is recommended that Bard Return Air Grille
Kit RG2 through RG5 or RFG2 through RFG5 be
installed when no return duct is used. Contact
distributor or factory for ordering information. If using
a return air filter grille, filters must be of sufficient size
to allow a maximum velocity of 400 fpm.
FILTERS
A 1-inch throwaway filter is supplied with each unit.
The filter slides into position making it easy to service.
This filter can be serviced from the outside by removing
the service door. A 1-inch washable filter and a 2-inch
pleated filter are also available as optional accessories.
The internal filter brackets are adjustable to
accommodate the 2-inch filter by bending down the two
horizontal tabs on each filter bracket.
FRESH AIR INTAKE
All units are built with fresh air inlet slots punched in
the service panel.
If the unit is equipped with a fresh air damper assembly,
the assembly is shipped already attached to the unit.
The damper blade is locked in the closed position. To
allow the damper to operate, the maximum and
minimum blade position stops must be installed. See
Figure 2.
All capacity, efficiency and cost of operation
information as required for Department of Energy
“Energyguide” Fact Sheets is based upon the fresh air
Blank-off plate in place and is recommended for
maximum energy efficiency.
The blank-off plate is available upon request from the
factory and is installed in place of the fresh air damper
shipped with each unit.
CONDENSATE DRAIN – EVAPORATOR
A plastic drain hose extends from the drain pan at the
top of the unit down to the unit base. There are
openings in the unit base for the drain hose to pass
through. In the event the drain hose is connected to a
drain system of some type, it must be an open or vented
type system to assure proper drainage.
FIGURE 2
FRESH AIR DAMPER
Manual 2100-411G
Page 7 of 23
Page 8
INSTALLATION INSTRUCTIONS
WALL MOUNTING INFORMATION
1. Two holes for the supply and return air openings
must be cut through the wall as shown in Figure 3.
WARNING
2. On wood frame walls, the wall construction must be
strong and rigid enough to carry the weight of the
unit without transmitting any unit vibration.
WARNING
Fire hazard can result if 1/4 inch clearance to
combustible materials for supply air duct is
not maintained. See Figure 4.
3. Concrete block walls must be thoroughly inspected
to insure that they are capable of carrying the weight
of the installed unit.
MOUNTING THE UNIT
1. These units are secured by wall mounting brackets,
which secure the unit to the outside wall surface at
both sides. A bottom mounting bracket is provided
for ease of installation, but is not required.
2. The unit itself is suitable for 0 inch clearance, but
the supply air duct flange and the first 3 feet of
supply air duct require a minimum of 1/4 inch
clearance to combustible material. If a combustible
wall, use a minimum of 30½" x 10½" dimensions for
sizing. However, it is generally recommended that a
1-inch clearance is used for ease of installation and
maintaining the required clearance to combustible
material. The supply air opening would then be
32" x 12". See Figures 3 and 4 for details.
Failure to provide the 1/4 inch clearance
between the supply duct and a combustible
surface for the first 3 feet of duct can result in
fire causing property damage, injury or death.
3. Locate and mark lag bolt locations and bottom
mounting bracket location. See Figure 3.
4. Mount bottom mounting bracket.
5. Hook top rain flashing under back bend of top. Top
rain flashing is shipped with unit attached to back of
unit on the right side.
6. Position unit in opening and secure with 5/16 lag
bolts; use 3/4 inch diameter flat washers on the lag
bolts.
7. Secure rain flashing to wall and caulk across entire
length of top. See Figure 3.
8. For additional mounting rigidity, the return air and
supply air frames or collars can be drilled and
screwed or welded to the structural wall itself
(depending upon wall construction). Be sure to
observe required clearance if combustible wall.
9. On side-by-side installations, maintain a minimum
of 20 inches clearance on right side to allow access
to control panel and heat strips, and to allow proper
airflow to the outdoor coil. Additional clearance
may be required to meet local or national codes.
Manual 2100-411G
Page 8 of 23
Page 9
all (4) sides of
supply air duct
is required from
1/4" clearance on
materials
combustible
Note: It is recommended
that a bead of silicone
caulking be placed behind
the side mounting flanges
and under top flashing at
time of installation.
MIS-796 A
Attach supplied
rain flashing.
Apply caulk
between flashing
Top flashing detail view
length of top.
Seal with bead of
caulking along entire
FIGURE 3
MOUNTING INSTRUCTIONS
Foam air seal
and wall.
Supply flange
Wall
Supply
Air Duct
DIM. "B"
Heater access
panel
DIM. "E"
Return
Air Opening
access door
Circuit breaker
16"
Wall
Pattern
Hole
Mounting
Side view of wall with unit installed
30 1/2" 10 1/2" 6 1/4" 1 1/4" 29 3/4"
30 1/2" 10 1/2" 6 1/4" 1 1/4" 29 3/4"
DIM. "A" DIM. "B" DIM. "C" DIM. "D" DIM. "E"
DIM. "A" DIM. "B" DIM. "C" DIM. "D" DIM. "E"
DIMENSION CHART
DIMENSION CHART
Required dimensions to
Required dimensions to
Required dimensions to
Required dimensions to
from combustible materials
from combustible materials
maintain 1/4" min. clearance
maintain 1/4" min. clearance
21"
30"
21"
Wall Bracket
Front view of wall with unit removed
6 5/8" 6 5/8"
1 7/8"
DIM. "A"DIM. "C" DIM. "C"
32" 12" 5 1/2" 2" 29"
32" 12" 5 1/2" 2" 29"
Supply Opening
combustible materials
combustible materials
maintain 1" clearance from
maintain 1" clearance from
DIM. "D"
16"
16"
Return Opening
16"
Manual 2100-411G
Page 9 of 23
Page 10
FIGURE 4
ELECTRIC HEAT CLEARANCE
SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR WALL
MOUNTED UNIT SHOWING 1/4 INCH CLEARANCE TO
COMBUSTIBLE SURFACES.
Manual 2100-411G
Page 10 of 23
WARNING
A minimum of 1/4 inch clearance must be maintained between the
supply air duct and combustible materials. This is required for the
first 3 feet of ducting.
It is important to insure that the 1/4 inch minimum spacing is
maintained at all points.
Failure to do this could result in overheating the combustible
material and may result in a fire causing property damage, injury
or death.
Page 11
FIGURE 5
WALL MOUNTING INSTRUCTIONS
SEE FIGURE 4 – MOUNTING INSTRUCTIONS
FIGURE 6
WALL MOUNTING INSTRUCTIONS
SEE UNIT DIMENSIONS, FIGURE 1, FOR
ACTUAL DIMENSIONS
Manual 2100-411G
Page 11 of 23
Page 12
FIGURE 7
COMMON WALL MOUNTING INSTALLATIONS
Manual 2100-411G
Page 12 of 23
Page 13
WIRING – MAIN POWER
Refer to the unit rating plate for wire sizing information
and maximum fuse or “HACR” type circuit breaker
size. Each outdoor unit is marked with a “Minimum
Circuit Ampacity”. This means that the field wiring
used must be sized to carry that amount of current.
Depending on the installed KW of electric heat, there
may be two field power circuits required. If this is the
case, the unit serial plate will so indicate. All models
are suitable only for connection with copper wire.
Each unit and/or wiring diagram will be marked “Use
Copper Conductors Only”. These instructions must be
adhered to. Refer to the National Electrical Code
(NEC) for complete current carrying capacity data on
the various insulation grades of wiring material. All
wiring must conform to NEC and all local codes.
The electrical data lists fuse and wire sizes (75° C
copper) for all models including the most commonly
used heater sizes. Also shown are the number of field
power circuits required for the various models with
heaters.
The unit rating plate lists a “Maximum Time Delay
Relay Fuse” or “HACR” type circuit breaker that is to
be used with the equipment. The correct size must be
used for proper circuit protection and also to assure that
there will be no nuisance tripping due to the momentary
high starting current of the compressor motor.
The disconnect access door on this unit may be locked
to prevent unauthorized access to the disconnect. To
convert for the locking capability, bend the tab locate in
the bottom left hand corner of the disconnect opening
under the disconnect access panel straight out. This tab
will now line up with the slot in the door. When shut, a
padlock may be placed through the hole in the tab
preventing entry.
See “Start Up” section for important information on
three phase scroll compressor start ups.
FIGURE 8
UNIT 24V TERMINAL BOARD
WIRING – LOW VOLTAGE WIRING
230 / 208V, 1 phase and 3 phase equipment dual
primary voltage transformers. All equipment leaves the
factory wired on 240V tap. For 208V operation,
reconnect from 240V to 208V tap. The acceptable
operating voltage range for the 240 and 208V taps are:
TAP RANGE
240 253 – 216
208 220 – 187
NOTE: The voltage should be measured at the field
power connection point in the unit and while
the unit is operating at full load (maximum
amperage operating condition).
Ten (10) wires should be run from thermostat subbase to
the 24V terminal board in the unit. A nine conductor,
18 gauge copper color-coded thermostat cable is
recommended. The connection points are shown in
Figure 8.
TABLE 3
THERMOSTAT WIRE SIZE
remrofsnarT
AVALFeguaGeriW
553.2
IMPORTANT
Only the thermostats shown in this Manual
have been tested with this equipment for
mumixaM
ecnatsiD
teeFni
eguag02
eguag81
eguag61
eguag41
eguag21
54
06
001
061
052
proper operation. Proper unit operation with
thermostats
be assured.
You assume responsibility for proper
operation of the unit when using thermostats
other than those listed above.
not listed in this Manual, cannot
Manual 2100-411G
Page 13 of 23
Page 14
FIGURE 9
COMPRESSOR CUTOFF THERMOSTAT WIRING
4 – 10KW 1 PH – 6 & 9KW 3 PH
FIGURE 10
COMPRESSOR CUTOFF THERMOSTAT WIRING
15 – 20KW 1 PH AND 3 PH
OPTIONAL OUTDOOR THERMOSTAT
APPLICATIONS
Since most equipment at the time of manufacture is not
designated for any specific destination of the country
and are installed in areas not approaching the lower
outdoor temperature range, outdoor thermostats are not
factory installed as standard equipment, but are offered
as an option. There are also different applications for
applying outdoor thermostats. The set point of either
type of outdoor thermostat application is variable with
geographic region and sizing of the heating equipment
to the individual structure. Utilization of the heating
Application Data, and the heat loss calculation of the
building are useful in determining the correct set points.
NOTE: The additional LAB (low ambient bypass) relay
is required to prevent heater operation during low
temperature cooling operation.
Manual 2100-411G
Page 14 of 23
OPTIONAL COMPRESSOR CUTOFF
THERMOSTAT (See Figures 9 and 10)
Heat pump compressor operation at outdoor
temperatures below 0°F are neither desirable nor
advantageous in term of efficiency. An outdoor
thermostat can be applied to take the mechanical heating
(compressor) off line, and send the (compressor) signal
to energize electric heat in its place (to make electric
heat first stage heating). This can also be applied to
bank the quantity of available electric heat. For
example: A heat pump operates with 10KW second
stage heat – once the outdoor thermostat has switched
then operates 15KW without the compressor as first
stage heat.
Page 15
ELECTRIC HEAT HOLD-OFF
(See Figures 11 and 12)
In other applications, it is desirable to disable the
operation of the electric heat until outdoor temperatures
have reached a certain design point. This won't allow
the electric heat to come on as second stage heating
unless the outdoor temperature is below the set point of
the outdoor thermostat. This is done to maximize
efficiency by utilizing the heat pump to bring the
ELECTRIC HEAT HOLD-OFF WIRING
4 & 10KW 1 PH — 6 & 9KW 3 PH
conditioned space temperature up, rather than cycling on
the electric heat due a second stage call for heat from
the thermostat on start-up coming off a night set-back
condition or someone increasing the thermostat set
point. (NOTE: Some programmable thermostats do
have a built-in time delay for pulling in second stage
heat when coming off set-back conditions.)
FIGURE 11
FIGURE 12
ELECTRIC HEAT HOLD-OFF WIRING
15-20KW 1 PH & 3 PH
Manual 2100-411G
Page 15 of 23
Page 16
LOW VOLTAGE CONNECTIONS
These units use a grounded 24 volt AC low voltage
circuit.
The “R” terminal is the hot terminal and the “C”
terminal is grounded.
“G” terminal is the fan input.
“Y” terminal is the compressor input.
“B” terminal is the reversing valve input. The reversing
valve must be energized for heating mode.
“R” terminal is 24 VAC hot.
“C” terminal is 24 VAC grounded.
“L” terminal is compressor lockout output. This
terminal is activated on a high or low pressure trip by
the electronic heat pump control. This is a 24 VAC
output.
LOW VOLTAGE CONNECTIONS
FOR DDC CONTROL
Fan Only Energize G
“W2” terminal is second stage heat (if equipped).
“O1” terminal is the ventilation input. This terminal
energizes any factory installed ventilation option.
“E” terminal is the emergency heat input. This terminal
energizes the emergency heat relay.
NOTE: For total and proper control using DDC, a
total of 6 controlled outputs are required (5 if
no ventilation system is installed). For proper
system operation under Emergency Heat
conditions where the compressor needs to be
deactivated, the B-W2-E outputs need to be
energized. Removing the Y (compressor) signal
alone turns the compressor off, but does not
activate the additional circuitry embedded in
the heat pump for proper and complete
operation.
Cooling Mode Energize Y, G
Heat Pump Heating Energize Y, G, B
2nd Stg Heating Energize G, W2, Y, B
w/Heat Pump (if employed)
Ventilation Energize G, O1
Emergency Heat Energize B, W2, E, G
TABLE 4
WALL THERMOSTAT
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850-3048
)1511D0225HT(
060-3048
)544-0211(
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taeHegats2;looCegats2
elbammargorP-noNcinortcelE
revoegnahclaunaMrootuA
taeHegats3;looCegats3
revoegnahclaunaMrootuA
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Manual 2100-411G
Page 16 of 23
Page 17
START UP
IMPORTANT INSTALLER NOTE
For improved start up performance wash the indoor coil
with a dish washing detergent.
CRANKCASE HEATERS
SH611-B and -C are provided with compressor
crankcase heat. All other models are not provided with
crankcase heat. They are either single phase or the
system refrigerant charge is not of sufficient quantity to
require crankcase heat.
The SH611-B and -C models have a wrap around type
heater located on the lower section of the compressor
housing. This is an on/off heater that is controlled by
the compressor contactor.
The label in Figure 13 is affixed to all SH611-B and -C
units detailing start up procedure. This is very
important. Please read carefully.
HIGH PRESSURE SWITCH
All models are supplied with a remote reset high
pressure switch. If tripped, this pressure switch may be
reset by turning the thermostat off then back on again.
THREE PHASE SCROLL COMPRESSOR
START UP INFORMATION
Scroll compressors, like several other types of
compressors, will only compress in one rotational
direction. Direction of rotation is not an issue with
single phase compressors since they will always start
and run in the proper direction.
However, three phase compressors will rotate in either
direction depending upon phasing of the power. Since
there is a 50-50 chance of connecting power in such a
way as to cause rotation in the reverse direction,
verification of proper rotation must be made. All three
phase units incorporate a phase monitor to ensure proper
field wiring. See the “Phase Monitor” section later in
this manual.
Verification of proper rotation must be made any time a
compressor is changed or rewired. If improper rotation
is corrected at this time there will be no negative impact
on the durability of the compressor. However, reverse
operation for over one hour may have a negative impact
on the bearing due to oil pump out.
NOTE: If compressor is allowed to run in reverse
rotation for several minutes, the compressor’s
internal protector will trip.
FIGURE 13
START UP LABEL
IMPORTANT
These procedures must be followed at
initial start up and at any time power has
been removed for 12 hours or longer.
To prevent compressor damage which
may result from the presence of liquid
refrigerant in the compressor crankcase:
1.
Make certain the room thermostat is in
the “off” position. (The compressor is not
to operate.)
2. Apply power by closing the system
disconnect switch. This energizes the
compressor heater which evaporates
the liquid refrigerant in the crankcase.
3. Allow 4 hours or 60 minutes per pound
of refrigerant in the system as noted on
the unit rating plate, whichever is
greater.
4. After proper elapsed time the thermostat
may be set to operate the compressor.
5. Except as required for safety while
servicing, do not open system
disconnect switch.
7961-411
All three phase ZR3 compressors are wired identically
internally. As a result, once the correct phasing is
determined for a specific system or installation,
connecting properly phased power leads to the same
Fusite terminal should maintain proper rotation
direction.
Verification of proper rotation direction is made by
observing that suction pressure drops and discharge
pressure rises when the compressor is energized.
Reverse rotation also results in an elevated sound level
over that with correct rotations, as well as, substantially
reduced current draw compared to tabulate values.
The direction of rotation of the compressor may be
changed by reversing any two line connections to the
unit.
Manual 2100-411G
Page 17 of 23
Page 18
PHASE MONITOR
All units with three phase compressors are equipped
with a 3 phase line monitor to prevent compressor
damage due to phase reversal.
The phase monitor in this unit is equipped with two
LEDs. If the Y signal is present at the phase monitor
and phases are correct, the green LED will light. If
phases are reversed, the red fault LED will be lit and
compressor operation is inhibited.
If a fault condition occurs, reverse two of the supply
leads to the unit. Do not reverse any of the unit factory
wires as damage may occur.
SERVICE HINTS
1. Caution owner/operator to maintain clean air filters
at all times. Also, not to needlessly close off supply
and return air registers. This reduces airflow through
the system, which shortens equipment service life as
well as increasing operating costs.
2. Switching to heating cycle at 75°F or higher outside
temperature may cause a nuisance trip of the remote
reset high pressure switch. Turn thermostat off then
on to reset the high pressure switch.
3. The heat pump wall thermostats perform multiple
functions. Be sure that all function switches are
correctly set for the desired operating mode before
trying to diagnose any reported service problems.
4. Check all power fuses or circuit breakers to be sure
they are the correct rating.
5. Periodic cleaning of the outdoor coil to permit full
and unrestricted airflow circulation is essential.
SEQUENCE OF OPERATION
COOLING – Circuit R-Y makes at thermostat pulling
in compressor contactor, starting the compressor and
outdoor motor. The G (indoor motor) circuit is
automatically completed on any call for cooling
operation or can be energized by manual fan switch on
subbase of constant air circulation.
HEATING – A 24V solenoid coil on reversing valve
controls heating cycle operation. Two thermostat
options, one allowing “Auto” changeover from cycle to
cycle and the other constantly energizing solenoid coil
during heating season and thus eliminating pressure
equalization noise except during defrost, are to be used.
On “Auto” option a circuit is completed from R-W1 and
R-Y on each heating “on” cycle, energizing reversing
valve solenoid and pulling in compressor contactor
starting compressor and outdoor motor. R-G also make
starting indoor blower motor. Heat pump heating cycle
now in operation. The second option has no “Auto”
changeover position, but instead energizes the reversing
valve solenoid constantly
whenever the system switch on subbase is placed in
“Heat” position, the “B” terminal being constantly
energized from R. A thermostat demand for heat
completes R-Y circuit, pulling in compressor contactor
starting compressor and outdoor motor. R-G also make
starting indoor blower motor.
PRESSURE SERVICE PORTS
High and low pressure service ports are installed on all
units so that the system operating pressures can be
observed. Pressure tables can be found later in the
manual covering all models on both cooling and heating
cycles. It is imperative to match the correct pressure
table to the unit by model number.
Manual 2100-411G
Page 18 of 23
Page 19
DEFROST CYCLE
The defrost cycle is controlled by temperature and time
on the solid state heat pump control. See Figure 14.
When the outdoor temperature is in the lower 40°F
temperature range or colder, the outdoor coil
temperature is 32°F or below. This coil temperature is
sensed by the coil temperature sensor mounted near the
bottom of the outdoor coil. Once coil temperature
reaches 30°F or below, the coil temperature sensor
sends a signal to the control logic of the heat pump
control and the defrost timer will start.
After 60 minutes at 30°F or below, the heat pump
control will place the system in the defrost mode.
During the defrost mode, the refrigerant cycle switches
back to the cooling cycle, the outdoor motor stops,
electric heaters are energized, and hot gas passing
through the outdoor coil melts any accumulated frost.
When the temperature rises to approximately 57°F, the
coil temperature sensor will send a signal to the heat
pump control which will return the system to heating
operations automatically.
If some abnormal or temporary condition such as a high
wind causes the heat pump to have a prolonged defrost
cycle, the heat pump control will restore the system to
heating operation automatically after 10 minutes.
The heat pump defrost control board has an option of
30, 60 or 90-minute setting. All models are shipped
from the factory on the 60-minute pin. If special
circumstances require a change to another time, remove
the wire from the 60-minute terminal and reconnect to
the desired terminal. The manufacturer's
recommendation is for 60-minute defrost cycles. Refer
to Figure 14.
FIGURE 14
DEFROST CONTROL BOARD
There is a cycle speed up jumper on the control. This
can be used to reduce the time between defrost cycle
operation without waiting for time to elapse.
Use a small screwdriver or other metallic object, or
another 1/4 inch QC, to short between the SPEEDUP
terminals to accelerate the HPC timer and initiate
defrost.
Be careful not to touch any other terminals with the
instrument used to short the SPEEDUP terminals. It
may take up to 10 seconds with the SPEEDUP
terminals shorted for the speedup to be completed and
the defrost cycle to start.
As soon as the defrost cycle kicks in remove the
shorting instrument from the SPEEDUP terminals.
Otherwise, the timing will remain accelerated and run
through the 1-minute minimum defrost length sequence
in a matter of seconds and will automatically terminate
the defrost sequence.
There is an initiate defrost jumper (sen jump) on the
control that can be used at any outdoor ambient during
the heating cycle to simulate a 0° coil temperature. This
can be used to check defrost operation of the unit
without waiting for the outdoor ambient to fall into the
defrost region.
By placing a jumper across the SEN JMP terminals (a
1/4 inch QC terminal works best) the defrost sensor
mounted on the outdoor coil is shunted out and will
activate the timing circuit. This permits the defrost
cycle to be checked out in warmer weather conditions
without the outdoor temperature having to fall into the
defrost region.
In order to terminate the defrost test the SEN JMP
jumper must be removed. If left in place too long, the
compressor could stop due to the high pressure control
opening because of high pressure condition created by
operating in the cooling mode with outdoor fan off.
Pressure will rise fairly fast as there is likely no actual
frost on the outdoor coil in this artificial test condition.
There is also a 5-minute compressor time delay
function built into the HPC. This is to protect
the compressor from short cycling conditions.
In some instances it is helpful to the service
technician to override or speed up this timing
period, and shorting out the SPEEDUP terminals
for a few seconds can do this.
Manual 2100-411G
Page 19 of 23
Page 20
TROUBLESHOOTING
SOLID STATE HEAT PUMP CONTROL
TROUBLESHOOTING PROCEDURE
1. NOTE: A thorough understanding of the defrost
cycle sequence is essential. Review that section
earlier in this manual prior to troubleshooting the
control. Turn on AC power supply to unit.
2. Turn thermostat blower switch to “fan on” – the
indoor blower should start. (If it doesn’t,
troubleshoot indoor unit and correct problem.)
TROUBLESHOOTING
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evitcefedrotoM .rotomecalpeR.gnidniwrotomdetrohsroneporofkcehC
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lortnocpmuptaehnoCC
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lortnocpmuptaehevitcefeD neebsahyaledemiteht,lortnocpmuptaehehtno1LotCdna,YotCmorftneserpsiV42fI
evitcefedlortnocpmuptaeH )CN-moC(.lortnocpmuptaehnoyalernafssorcakcehC
evitcefedroticapacrotoM .roticapacecalpeR.roticapacdetrohsroneporofkcehC.gnitarroticapackcehC
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3. Turn thermostat blower to “auto” position. Indoor
blower should stop. NOTE: Many models have a
1-minute blower time delay on “off” command;
wait for this to time-out.
4. Set system switch to “heat” or “cool”. Adjust
thermostat to call for heat or cool. The indoor
blower, compressor and outdoor fan should start.
NOTE: If there was no power to 24 volt transformer,
the compressor and outdoor fan motor will
not start for 5 minutes. This is because of
the compressor short cycle protection.
TABLE 5
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.remrofsnart
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oteunitnoctneserpsiV42fI.)sledomesahp-3emosnodesu,deppiuqefi(rotinomesahp
.petstxen
ehtpmuj,tneserptonsiV42fI.rotcatnocrosserpmocecalperro/dnakcehc,tneserpsiV42fI
1LotCmorfV42rofkcehctratstonseodrosserpmocfI.sdnoces01roflanimretpudeeps
.lortnocpmuptaehehtno
tiucricytefasehT.slanimretdnagniriwdetaicossalladna)deppiuqefi(yalerssapyberusserp
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otnodnafforewopelcyC.tnenopmocevitcefedecalpeR.rosserpmocehttuokcollliwlortnoc
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Manual 2100-411G
Page 20 of 23
Page 21
CHECKING TEMPERATURE SENSOR
OUTSIDE UNIT CIRCUIT
1. Disconnect temperature sensor from board and from
outdoor coil.
2. Use an ohmmeter and measure the resistance of the
sensor. Also use ohmmeter to check for short or
open.
TEMPERATURE F VS RESISTANCE R OF TEMPERATURE
F R F R F R
-25.0
-24.0
-23.0
-22.0
-21.0
-20.0
-19.0
-18.0
-17.0
-16.0
-15.0
-14.0
-13.0
-12.0
-11.0
-10.0
-9.0
-8.0
-7.0
-6.0
-5.0
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
196871
190099
183585
177318
171289
165487
159904
154529
149355
144374
139576
134956
130506
126219
122089
118108
114272
110575
107010
103574
100260
97064
93981
91008
88139
85371
82699
80121
77632
75230
72910
70670
68507
66418
64399
62449
60565
58745
56985
55284
53640
52051
50514
49028
47590
46200
44855
43554
42295
41077
25.0
26.0
27.0
28.0
29.0
30.0
31.0
32.0
33.0
34.0
35.0
36.0
37.0
38.0
39.0
40.0
41.0
42.0
43.0
44.0
45.0
46.0
47.0
48.0
49.0
50.0
51.0
52.0
53.0
54.0
55.0
56.0
57.0
58.0
59.0
60.0
61.0
62.0
63.0
64.0
65.0
66.0
67.0
68.0
69.0
70.0
71.0
72.0
73.0
74.0
3. Check resistance reading to chart of resistance use
sensor ambient temperature. (Tolerance of part is
± 10%)
4. If sensor resistance reads very low, then sensor is
shorted and will not allow proper operation of the
heat pump control.
5. If sensor is out of tolerance, shorted, open, or reads
very low ohms then it should be replaced.
39898
38757
37652
36583
35548
34545
33574
32634
31723
30840
29986
29157
28355
27577
26823
26092
25383
24696
24030
23384
22758
22150
21561
20989
20435
19896
19374
18867
18375
17898
17434
16984
16547
16122
15710
15310
14921
14544
14177
13820
13474
13137
12810
12492
12183
11883
11591
11307
11031
10762
75.0
76.0
77.0
78.0
79.0
80.0
81.0
82.0
83.0
84.0
85.0
86.0
87.0
88.0
89.0
90.0
91.0
92.0
93.0
94.0
95.0
96.0
97.0
98.0
99.0
100.0
101.0
102.
103.0
104.0
105.0
106.0
107.0
108.0
109.0
110.0
111.0
112.0
113.0
114.0
115.0
116.0
117.0
118.0
119.0
120.0
121.0
122.0
123.0
124.0
10501
10247
10000
9760
9526
9299
9077
8862
8653
8449
8250
8057
7869
7686
7507
7334
7165
7000
6840
6683
6531
6383
6239
6098
5961
5827
5697
0
5570
5446
5326
5208
5094
4982
4873
4767
4663
4562
4464
4367
4274
4182
4093
4006
3921
3838
3757
3678
3601
3526
3452
Manual 2100-411G
Page 21 of 23
Page 22
FAN BLADE SETTING DIMENSIONS
Shown in Figure 15 are the correct fan blade setting
dimensions for proper air delivery across the outdoor
coil.
Any service work requiring removal or adjustment in
the fan and/or motor area will require that the
dimensions below be checked and blade adjusted in or
out on the motor shaft accordingly.
FIGURE 15
FAN BLADE SETTING
AIRFLOW
MIS-1724
"A"
TABLE 7
1
REFRIGERANT CHARGE
SUBCOOLING LEVEL
GNILOOCGNITAEH
detaR
ledoM
wolfriA
116HS053102-7102-7112-7161-21
1 Expected subcooling levels during cooling operation.
Above subcooling levels are provided to troubleshoot low
charge or overcharged conditions. If charge is in doubt,
evacuate and recharge the unit to the refrigerant charge
listed on the serial plate.
DO59
erutarepmeT
DO28
erutarepmeT
DO74
erutarepmeT
TABLE 8
RATED CFM & RATED ESP
detaR
ledoM
116HS053102.0011–5741
* Rated CFM and ESP on high speed tap.
*MFC
detaR
*PSE
DO71
erutarepmeT
dednemmoceR
egnaRwolfriA
TABLE 6
FAN BLADE DIMENSION
ledoMAnoisnemiD
116HS57.1
REMOVAL OF FAN SHROUD
1. Disconnect all power to the unit.
2. Remove the screws holding both grilles, one on each
side of unit, and remove grilles.
3. Remove screws holding fan shroud to condenser and
bottom. Nine (9) screws.
4. Unwire condenser fan motor.
5. Slide complete motor, fan blade, and shroud
assembly out the left side of the unit.
6. Service motor/fan as needed.
7. Reverse steps to reinstall.
REFRIGERANT CHARGE
The correct system R-22 charge is shown on the unit
rating plate. Optimum unit performance will occur with
a refrigerant charge shown on the unit serial plate.
If correct charge is in doubt, recover the refrigerant and
recharge per the charge on the unit rating plate. See
Table 7 for proper subcooling levels for evaluation of
proper charge.
TABLE 9
INDOOR BLOWER PERFORMANCE
CFM @ 230V / 460V
116HS
.P.S.E
O
HnI
2
0.
1.
2.
3.
4.
Subtract .08 static for 2" filter
---
deepShgiHdeepSmuideM
lioCyrDlioCteWlioCyrDlioCteW
0071
0551
0041
0521
5751
5741
0531
0511
---
5741
5731
0521
0011
---
NOTE: SH611 is shipped with the indoor
blower on high speed for ducted
applications. Move to medium
speed for free blow applications.
TABLE 10
MAXIMUM ESP OF OPERATION
deepShgiHdeepSmuideM
50A
80A
01A
02A
90B3.3.
90C3.3.
3.
3.
3.
3.
5731
0521
0011
528
---
3.
3.
3.
3.
Manual 2100-411G
Page 22 of 23
Page 23
TABLE 11
PRESSURE TABLE
COOLING
Low side pressure ± 2 PSIG
High side pressure ± 5 PSIG
Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct
operating charge being in the system, the charge should be removed, system evacuated and recharged to
serial plate instruction.
Air Temperature Entering Outdoor Coil °F
riAnruteR
ledoM
116HS
erutarepmeTerusserP5708580959001501011511
BD.ged57
BW.ged26
BD.ged08
BW.ged76
BD.ged58
BW.ged27
ediSwoL
ediShgiH
ediSwoL
ediShgiH
ediSwoL
ediShgiH
56
56
76
86
07
671
202
322
142
452
96
07
27
37
57
181
702
922
742
17
27
57
67
87
781
412
732
652
072
17
17
27
562
67
162
272
97
282
172
472
67
77
872
97
882
182
08
192
37
372
87
082
18
092
TABLE 12
PRESSURE TABLE
HEATING
Air Temperature Entering Outdoor Coil °F
riAnruteR
ledoM
116HS.ged07
Low side pressure ± 2 PSIG
High side pressure ± 5 PSIG
Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge
being in the system, the charge should be removed, system evacuated and recharged to serial plate instruction.
erutarepmeTerusserP050151025203530454055506
ediSwoL
32
42
62
82
13
53
83
34
84
35
95
ediShgiH
351
171
881
502
022
432
742
062
172
182
982
56
27
792
403
Manual 2100-411G
Page 23 of 23
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