Carrier AQUAZONE 50PSW036-360 Quick guide

AQUAZONE TM
50PSW036-360
Water-to-Water Source Heat Pump
with PURON ®Refrigerant (R-410A)
Installation, Start-Up, and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS ................... 1,2
GENERAL ........................................ 2
INSTALLATION ............................. 2-16
Step 1 -- Check Jobsite ........................ 2
Step 2 u Check Unit ........................... 2
• STORAGE
• PROTECTION
• INSPECT UNIT
Step 3-- Locate Unit ............................. 4
Step 4 -- Mount Unit ............................. 4
Step 5 -- Connect Piping ......................... 5
• WATER SUPPLY AND QUALITY
• WATER LOOP APPLICATIONS
• GROUND-WATER APPLICATIONS
• GROUND-LOOP APPLICATIONS
• UNIT LOAD PIPING
Step 6 -- Wire Electrical Connections ............ 7
• POWER CONNECTION
• SUPPLY VOLTAGE
• EXTERNAL LOOP POWER CONNECTION
• 208-V OPERATION
• 460-V OPERATION
Step 7 -- Wire Low Voltage Connections ........ 15
• THERMOSTAT CONNECTIONS
• WATER FREEZE PROTECTION
• ACCESSORY CONNECTIONS
• WATER SOLENOID VALVES
PRE-START-UP .................................. 16
System Checkout ............................. 16
FIELD SELECTABLE INPUTS ................ 16,17
Complete C Control Jumper Settings ........... 16
Complete C Control DIP Switches .............. 16
Deluxe D Control Jumper Settings ............. 16
Deluxe D Control DIP Switches ................ 16
Deluxe D Control Accessory Relay
Configurations ............................. 17
START-UP .................................... 17-19
Operating Limits ................................ 17
Unit Start-Up .................................... 17
Scroll Compressor Rotation ..................... 17
Flow Regulation ................................. 18
Cleaning and Flushing .......................... 18
Antifreeze ....................................... 18
Cooling Tower/Boiler Systems .................. 19
Ground Coupled, Closed Loop and Plateframe
Heat Exchanger Well Systems ................ 19
OPERATION ................................... 19,20
Power Up Mode ................................. 19
Units with Aquazone Complete C Control ....... 19
Units with Aquazone Deluxe D Control .......... 19
SYSTEM TEST ................................ 20,21
Page
Test Mode ....................................... 20
Retry Mode ...................................... 21
Aquazone Deluxe D Control LED Indicators ..... 21
SERVICE ...................................... 21,22
Water Coil ....................................... 21
Refrigerant System .............................. 21
Condenser Cleaning ............................ 21
Checking System Charge ....................... 22
Refrigerant Charging ............................ 22
Air Coil Fan Motor Removal ..................... 22
TROUBLESHOOTING ........................ 22-24
50PSW START-UP CHECKLIST ........... CL-1,CL-2
IMPORTANT: Read the entire instruction manual before |starting installation. ]
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance func-
tions of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe precau-
tions in the literature, tags and labels attached to the unit, and
other safety precautions that may apply.
Improper installation, adjustment, alteration, service, main-
tenance, or use can cause explosion, fire, electrical shock or
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The
qualified installer or agency must use factory-authorized kits or
accessories when modifying this product. Refer to the individ-
ual instructions packaged with the kits or accessories when
installing.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have fire
extinguisher available. Read these instructions thoroughly and
follow all warnings or cautions attached to the unit. Consult
local building codes and the National Electrical Code (NEC)
for special installation requirements.
Understand the signal words -- DANGER, WARNING,
and CAUTION. DANGER identifies the most serious hazards
which will result in severe personal injury or death. WARN-
1NG signifies hazards that could result in personal injury or
death. CAUTION is used to identify unsafe practices, which
would result in minor personal injury or product and property
damage.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500054-01 Printed in U.S.A. Form 50PSW-2SI Pg 1 7-09 Replaces: 50PSW-1SI

Recognize safety information. This is the safety alert
symbol (!t',). When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal
iniury.
Electrical shock can cause personal Njury or death. Before
installing or servicing system, always turn off main power
to system. There may be more than one disconnect switch.
Turn off accessory heater power if applicable. Install lock-
out tag.
GENERAL
The Aquazone TM 50PSW water source heat pump (WSHP)
is a single-package vertically mounted unit with electronic con-
trols designed for year-round cooling and heating.
IMPORTANT: The installation of water source heat pump
units and all associated components, parts, and accessories
which make up the installation shall be in accordance with
the regulations of ALL authorities having jurisdiction and
MUST conform to all applicable codes. It is the responsi-
bility of the installing contractor to determine and comply
with ALL applicable codes and regulations.
INSTALLATION
Step I ECheck Jobsite EInstallation, operation and
maintenance instructions are provided with each unit. Before
unit start-up, read all manuals and become familiar with the
unit and its operation. Thoroughly check out the system before
operation. Complete the inspections and instructions listed
below to prepare a unit for installation. See Table 1 for unit
physical data.
Units are designed for indoor installation only. Be sure to al-
low adequate space around the unit for servicing. See Fig. 1
and 2for overall unit dimensions.
Step 2 _ Cheek Unit _ Upon receipt of shipment at
the jobsite, carefully check the shipment against the bill of
lading. Make sure all units have been received. Inspect the car-
ton or crating of each unit, and inspect each unit for damage.
Ensure the shipping company makes proper notation of any
shortages or damage on all copies of the freight bill. Concealed
damage not discovered during unloading must be reported to
the shipping company within 15 days of receipt of shipment.
NOTE: It is the responsibility of the purchaser to file all
necessary claims with the shipping company.
1. Verify unit is correct model for entering water tempera-
ture of job.
2. Be sure the location chosen for unit installation provides
ambient temperatures maintained above freezing. Well
water applications are especially susceptible to freezing.
3. Be sure the installation location is isolated from sleeping
areas, private offices and other acoustically sensitive
spaces.
NOTE: A sound control accessory package may be used
to help eliminate sound in sensitive spaces.
4. Provide sufficient access to allow maintenance and
servicing of the compressor and coils.
5. Provide an unobstructed path to the unit within the closet
or mechanical room. Space should be sufficient to allow
removal of unit if necessary.
6. Provide ready access to water valves and fittings, and
screwdriver access to unit side panels.
7. Where access to side panels is limited, pre-removal of the
control box side mounting screws may be necessary for
future servicing.
STORAGE -- If the equipment is not needed for firanediate
installation upon its arrival at the jobsite, it should be left in its
shipping carton and stored in a clean, dry area of the building
or in a warehouse. Units must be stored in an upright position
at all thnes. If carton stacking is necessary, stack units a maxi-
inure of 3 cartons high. Do not remove any equipment from its
shipping package until it is needed for installation.
To avoid equipment damage, do not use these units as a
source of heating or cooling during the construction pro-
cess. The mechanical components used in these units can
quickly become clogged with construction dirt and debris
which may cause system damage.
Table I -- 50PSW Unit Physical Data
50PSW UNIT SIZE 036 060 120 180 360
NOMINAL CAPACITY (tons) 3 5 10 14 30
WEIGHT (Ib)
Operating 348 360 726 790 1330
Packaged 373 385 770 800 1340
COMPRESSOR (qty) Scroll (1) Scroll (1) Scroll (2) Scroll (1) Scroll (2)
REFRIGERANT TYPE R-410A
Factory Charge Per Circuit (Ib) 4,5 i6,25 6,25114,9!14,9
CONNECTIONS, IPT (in.)
Commercial Load/Source 3/4 1 11/2
HWG Water In/Out 1/2 N/A
LEGEND NOTES:
HWG -- Hot Water Generator 1, Maximum working pressure on the base unit is 500 psig,
IPT -- Internal Pipe Thread 2, Units have a dual isolated compressor mounting,
TXV -- Thermostatic Expansion Valve 3, Units have a balanced port expansion valve (TXV),
4, Insulated source and load water coils are standard,
5, Insulated refrigerant circuit is standard,
6, Compressor is on (green) light and fault on (red) light,

A
C
SIZES 036,060
B
C
Access Required Service Access
SIZE 120
50PSW
UNIT
SIZE
OVERALL CABINET
A B C
Depth Width Height
036,060 30.6 25.4 33.0
120 30.6 52.9 37.0
LEGEND
HWG -- Hot Water Generator
HACR -- Heating, Air Conditioning, and Refrigeration
NOTES:
1. Dimensions shown inches.
2. HACR circuit breaker in U.S.A. only.
Source (Outdoor)
D E
Water In Water Out
2.70 9.4
25.2 25.2
WATER CONNECTIONS
3I 4 HWG
H J
Return In Water Out
27.9 30.4
34.9 34.9
ELECTRIC ACCESS PLUGS
Load (Indoor)
F G
Water In Water Out
19.4 24.5
30.1 30.1
K L M
Low External Power
Voltage Pump Supply
20.9 22.9 30.9
29.9 31.9 34.4
Fig. 1 -- 50PSW036-120 Unit

12.3 15.0 4.5 Load Source
[138] [381] \\ [114]
\ 2" IPTWater Connections
63.2;;
[1604]
Left
Side
View
45.1
................................................................................[1146] ............................................................................
62.0
[1575]
Fault/Run Lights
Front
View
26,3
.........................................[669] ......................................
Electrical
Access
Panel
Compressor
Access
Panel
4inimum
3ft [91cm] /
Required Service//
Aoz/
NOTES:
1. Dimensions shown in inches [mm].
2. Front and side access is preferred for service
access. All components may be accessed from
the front of the unit.
Fig. 2- 50PSW180,360 Unit
PROTECTION -- Once the units are properly positioned on
the jobsite, they must be covered with either a shipping carton,
vinyl fihn, or an equivalent protective covering. Open ends of
pipes stored on the jobsite must be capped. This precaution is
especially important in areas where painting, plastering, or
spraying of fireproof material, etc., is not yet complete. Foreign
material that is allowed to accumulate within the units can pre-
vent proper start-up and necessitate costly clean-up operations.
Before installing any of the system components, be sure to
examine each pipe, fitting, and valve, and remove any dirt or
foreign material found in or on these components.
DO NOT store or install units in corrosive enviromnents or
in locations subject to temperature or humidity extremes
(e.g., attics, garages, rooftops, etc.). Corrosive conditions
and high temperature or humidity can significantly reduce
performance, reliability, and service life. Always move
units in an upright position. Tilting units on their sides may
cause equipment damage.
INSPECT UNIT -- To prepare the unit for installation, com-
plete the procedures listed below:
1. Compare the electrical data on the unit nameplate with
ordering and shipping information to verify that the
correct unit has been shipped.
2. Verify that the unit is the correct model for the entering
water temperature of the job.
3.
4.
5.
6.
7.
8.
Wait to remove the packaging until the unit is ready for
installation.
Verify that the refrigerant tubing is free of kinks or dents,
and that it does not touch other unit components.
Inspect all electrical connections. Be sure connections are
clean and tight at the terminals.
Loosen bolts and remove shipping clamps on compres-
sors equipped with external spring vibration isolators.
Compressors are internally spring-mounted.
Locate and verify any accessory kit located in compressor
section.
Remove any access panel screws that may be difficult to
remove once unit is installed.
Step 3 -- Locate Unit -- The following guidelines
should be considered when choosing a location for the WSHP:
• Units are for indoor use only.
• Provide sufficient space for water and electrical
connections.
Locate unit in an area that allows for easy access and
removal of access panels.
Allow enough space for service personnel to perform
maintenance.
Step 4 _Mount Unit _Mount unit as shown in Fig. 3.
Rod attachinents must be able to support the weight of the unit.
See Table 1 for unit operating weight.

Source Connections
(Boiler/Tower/Ground)
Control
Wiring
Load Connections (Hot
Water/Chilled Water) Automatic Flow
Regulator
Valve
with Pressure
Temperature Port
..............Ball Valve
,_ with Pressure
emperature Port
e Y Strainer with
Blow Down Valve
/' Power
Disconnect
Fig. 3 -- Typical Water Loop System --
Boiler, Tower, or Ground (Sizes 180,360 Shown)
Step 5 EConnect Piping EDepending on the appli-
cation, there are 3 types of WSHP piping systems to choose
from: water loop, ground-water and ground loop. Refer to the
Carrier System Design Manual for additional information.
All WSHP units utilize low temperature soldered female
pipe thread fittings for water connections to prevent annealing
and out-of-round leak problems which are typically associated
with high temperature brazed connections. When making pip-
ing connections, consider the following:
• A backup wrench must be used when making screw con-
nections to unit to prevent internal damage to piping.
• Insulation may be required on piping to avoid condensa-
tion in the case where fluid in loop piping operates at
temperatures below dew point of adjacent air.
• Piping systems that contain steel pipes or fittings may
be subject to galvanic corrosion. Dielectric fittings may
be used to isolate the steel parts of the system to avoid
galvanic corrosion.
• Units may be manifolded together via top water connects
to get increased temperatures, when piped in series, or
greater capacity, when piped in parallel.
WATER SUPPLY AND QUALITY -- Check water supply.
Water supply should be plentiful and of good quality. See
Table 2 for water quality guidelines.
IMPORTANT: Failure to comply with the above required
water quality and quantity limitations and the closed-
system application design requirements may cause damage
to the robe-in-robe heat exchanger that is not the responsi-
bility of the manufacturer.
In all applications, the quality of the water circulated
through the heat exchanger must fall within the ranges listed in
the Water Quality Guidelines table. Consult a local water treat-
ment firm, independent testing facility, or local water authority
for specific recolranendations to maintain water quality within
the published lhnits.
WATER LOOP APPLICATIONS -- Water loop applica-
tions usually include a number of units plumbed to a colmnon
piping system. Maintenance to any of these units can introduce
air into the piping system. Therefore, air elimination
equipment comprises a major portion of the mechanical room
plumbing.
The flow rate is usually set between 2.25 and 3 gpm per ton
of cooling capacity. For proper maintenance and servicing,
pressure-temperature (P/T) ports are necessary for temperature
and flow verification.
In addition to complying with any applicable codes, consid-
er the following for system piping:
• Piping systems utilizing water temperatures below
50 F require 1/2-in. closed cell insulation on all piping
surfaces to eliminate condensation.
• All plastic to metal threaded fittings should be avoided
due to the potential to leak. Use a flange fitted substitute.
• Teflon* tape thread sealant is recommended to minimize
internal fouling of the heat exchanger.
• Use backup wrench. Do not overtighten connections.
• Route piping to avoid service access areas to unit.
• The piping system should be flushed prior to operation to
remove dirt and foreign materials from the system.
GROUND-WATER APPLICATIONS -- In addition to
complying with any applicable codes, consider the following
for system piping:
• Install shut-off valves for servicing.
• Install pressure-temperature plugs to measure flow and
temperature.
• Boiler drains and other valves should be connected using
a "T" connector to allow acid flushing for the heat
exchanger.
• Do not overtighten connections.
• Route piping to avoid service access areas to unit.
• Use PVC SCH80 or copper piping material.
NOTE: PVC SCH40 should not be used due to system high
pressure and temperature extremes.
GROUND-LOOP APPLICATIONS -- Temperatures be-
tween 25 and 110 F and a cooling capacity of 2.25 to 3 gpm of
flow per ton are recolmnended. In addition to complying with
any applicable codes, consider the following for system piping:
• Piping materials should be limited to only polyethylene
fusion in the buried sections of the loop.
• Galvanized or steel fittings should not be used at any
time due to corrosion.
• All plastic to metal threaded fittings should be avoided
due to the potential to leak. Use a flange fitted substitute.
• Do not overtighten connections.
• Route piping to avoid service access areas to unit.
• Pressure-temperature (P/T) plugs should be used to mea-
sure flow of pressure drop.
UNIT LOAD PIPING -- For applications with wide temper-
amre variation such as heating/cooling coils:
• Use piping materials that are rated for the maximum tem-
perature and pressure combination. This excludes PVC
for most heating applications.
• Ensure load water flow in high temperature heating
applications is at least 3 gpm per ton to improve perfor-
mance and reduce nuisance high pressure faults.
• DO NOT employ plastic to metal threaded joints.
• Utilize a pressure tank and air separator vent system to
equalize pressure and remove air.
• Employ an 800-micron particulate strainer in both load
and source plumbing to protect the plate heat exchanger.
Swilmnin_ Pool Hot Tub Applications -- Load heat ex-
changer should be isolated with secondary heat exchanger
constructed of anti-corrosion material in all chlonne/bromine
fluid applications.
Potable Water Applications
• Load coax material should always be vented double
walled for use in potable water systems.
• Ensure load water flow in high temperature heating
applications is at least 3 gpm per ton to improve perfor-
mance and reduce nuisance high pressure faults.
*Teflon is a trademark of E. I. du Pont de Nemours and Company.

Table 2 -- Water Quality Guidelines
IHX ICLOSED IOPEN LOOP AND RECIRCULATING WELL**CONDITION MATERIAL* RECIRCULATINGt
Scaling Potential -- Primary Measurement
Above the given limits, scaling is likely to occur, Scaling indexes should be calculated using the limits below,
pH/OalciUmHardnessMethod IAll IN/A IpH<7.5andOaHardness,<100ppm
Index Limits for Probable Scaling Situations (Operation outside these limits is not recommended.)
Scaling indexes should be calculated at 150 F for direct use and HWG applications, and at 90 F for indirect HX use, A monitoring plan should be
implemented, 6.0 - 7.5
Ryznar Stability Index All N/A If >7,5 minimize steel pipe use,
Langelier Saturation Index -0.5 to +0.5
All N/A If <-0,5 minimize steel pipe use,
Based upon 150 F HWG and direct well, 85 F indirect well HX,
Iron Fouling
Iron Fe2+(Ferrous) <0.2 ppm (Ferrous)
(Bacterial Iron Potential) All N/A If Fe2+(ferrous) >0,2 ppm with pH 6 - 8, 02<5 ppm check for
iron bacteria,
Iron Fouling All N/A <0.5 ppm of Oxygen
Above this level deposition will occur,
Corrosion Preventiont¢
pH All 6 - 8,5 6 - 8.5
Monitor/treat as needed, Minimize steel pipe below 7 and no open tanks with pH <8,
Hydrogen Sulfide (H2S) <0.5 ppm
All N/A At H2S>0,2 ppm, avoid use of copper and cupronickel piping of HXs,
Rotten egg smell appears at 0,5 ppm level,
Copper alloy (bronze or brass) cast components are okay to <0,5 ppm,
Ammonia Ion as Hydrox- <0.5 ppm
ide, Chloride, Nitrate and All N/A
Sulfate Compounds
Maximum Chloride Levels
Copper
Cupronickel
304 SS
316 SS
Titanium
N/A
N/A
N/A
N/A
N/A
Maximum allowable at maximum water temperature,
50 F (10 C) 75 F (24 C) 100 F (38 C)
<20 ppm NR NR
<150 ppm NR NR
<400 ppm <250 ppm <150 ppm
<1000 ppm <550 ppm <375 ppm
>1000 ppm >550 ppm >375 ppm
Erosion and Clogging
Particulate Size and <10 ppm of particles and
Erosion a maximum velocity of <10 ppm (<1 ppm "sandfree" for reinjection) of particles and a maxi-
All 6 fps, mum velocity of 6 fps, Filtered for maximum 800 micron size, Any par-
Filtered for maximum ticulate that is not removed can potentially clog components,
800 micron size,
LEGEND
HWG-- Hot Water Generator
HX -- Heat Exchanger
N/A -- Design Limits Not Applicable Consid-
ering Recirculating Potable Water
NR -- Application Not Recommended
SS -- Stainless Steel
*Heat exchanger materials considered are copper, cupronickel,
304 SS (stainless steel), 316 SS, titanium,
fCIosed recirculating system is identified by a closed pressurized
piping system,
**Recirculating open wells should observe the open recirculating
design considerations,
ttlf the concentration of these corrosives exceeds the maximum
allowable level, then the potential for serious corrosion problems
exists,
Sulfides in the water quickly oxidize when exposed to air, requir-
ing that no agitation occur as the sample is taken, Unless tested
immediately at the site, the sample will require stabilization with a
few drops of one Molar zinc acetate solution, allowing accurate
sulfide determination up to 24 hours after sampling, A low pH and
high alkalinity cause system problems, even when both values are
within ranges shown, The term pH refers to the acidity, basicity, or
neutrality of the water supply. Below 7,0, the water is considered
to be acidic, Above 7,0, water is considered to be basic, Neutral
water contains a pH of 7,0,
To convert ppm to grains per gallon, divide by 17, Hardness in
mg/I is equivalent to ppm,

Step 6 EWire Electrical Connections conform to the Class II temperature limitations described in the
NEC.
To avoid possible injury or death due to electrical shock,
open the power supply disconnect switch and secure it in
an open position during installation. Install lockout tag.
Use only copper conductors for field-installed electrical
wiring. Unit terminals are not designed to accept other
types of conductors. Failure to heed this warning could
result in equipment damage.
All field-installed wiring, including the electrical ground,
MUST comply with the National Electrical Code (NEC) as
well as applicable local codes. In addition, all field wiring must
Operating voltage must be the same voltage and phase as
shown in Table 3.
Refer to unit wiring diagrams Fig. 4-12 for a schematic of
the field connections which must be made by the installing (or
electrical) contractor.
Consult the unit wiring diagram located on the inside of the
compressor access panel to ensure proper electrical hookup.
The installing (or electrical) contractor must make the field
connections when using field-supplied disconnect.
Make all final electrical connections with a length of flexi-
ble conduit to minimize vibration and sound transmission to
the building.
POWER CONNECTION--Line voltage connection is
made by connecting incoming line voltage wires to L1, L2, and
L3 on the power distribution block.
Table 3 -- 50PSW Electrical Data
50PSW UNIT
SIZE
036
060
120
180
360
FLA --
HACR --
LRA --
MCA --
MOCP --
RLA --
VOLTAGE
(V-Ph-Hz)
208/230-1-60
265-1-60
208/230-3-60
460-3-60
575-3-60
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-1-60
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
LEGEND
Full Load Amps
VOLTAGE RANGE
MINIMAX
187/254
239/292
187/254
414/506
518/633
187/254
187/254
414/506
518/633
187/254
187/254
414/506
518/633
187/254
414/506
518/633
187/254
414/506
518/633
Heating, Air Conditioning, and Refrigeration
Locked Rotor Amps
Minimum Circuit Amps
Minimum Overcurrent Protection
Rated Load Amps
*Time-delay fuse or HACR circuit breaker,
NOTE: The 460-v units using an internal secondary pump will
require a neutral wire from the supply side in order to feed the
accessory with 265-v,
COMPRESSOR TOTAL
RLA LRA QTY FLA
16,7 79,0 1 16,7
13,5 72,0 1 13,5
10,4 73,0 1 10,4
5,8 38,0 1 5,8
3,8 36,5 1 3,8
30,1 158,0 1 30,1
20,5 155,0 1 20,5
9,6 75,0 1 9,6
7,6 54,0 1 7,6
30,1 158,0 2 60,2
20,5 155,0 2 41,0
9,6 75,0 2 19,2
7,6 54,0 2 15,2
53,6 245,0 1 53,6
20,7 125,0 1 20,7
16,4 100,0 1 16,4
53,6 245,0 2 107,2
20,7 125,0 2 41,4
16,4 100,0 2 32,8
MCA
20,9
16,9
13,0
7,3
4,8
37,6
25,6
12,0
9,5
67,7
46,1
21,6
17,1
67,0
25,9
20,5
120,6
46,6
36,9
MOCP*
35
30
20
15
15
6O
45
2O
15
9O
6O
3O
2O
110
45
35
150
6O
5O

Go
LEGEND
AL
CB
CC
COMP
FP1
FP2
HP
JW4
LED
LOC
NEC
P1
PDB
-- Alarm Relay Contacts
-- Circuit Breaker
-- Compressor Contactor
-- Compressor
-- Sensor, Source Low Temp Protection
-- Sensor, Load Low Temp Protection
-- High Pressure Switch
-- Jumper Wire for Alarm
-- Light-Emitting Diode
-- Loss of Charge Pressure Switch
-- National Electrical Code
-- Field Wiring Terminal Block
-- Power Distribution Block
RVS -- Reversing Valve Solenoid
TRANS -- Transformer
Factory Line Voltage Wiring
Factory Low Voltage Wiring
Field Line Voltage Wiring
Field Low Voltage Wiring
Printed Circuit Trace
cO e Relay/Contactor Coil
o4m
@
_L
Solenoid Coil O--r%O Circuit Breaker
Thermistor _ High Pressure Switch
Ground O-_ Low Pressure Switch
Indicator Light
G=Green, R=Red _ Fuse
(Comp On) (Alarm Light)
POWER SUPPLY REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY,
SEE NOTE 2
*Optional.
NOTES:
1. Compressor motor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. Power Suuulv: 460 v and 575 v -- Transformer is factory wired for 460 v and
575 v power supply with wire lead colors as shown in the chart. The trans-
former is 75 va and is protected with a circuit breaker in the secondary circuit.
4. Power Supply: 208-230 v -- Transformer is factory wired for 208 v power
supply. For 230 v power supply, disconnect red lead at H2 and reconnect it at
H3. The transformer is 150 va and is protected with primary and secondary
fuses.
5. FP1 thermistor provides low temp protection for source water. When using
antifreeze solutions, cut JW3 jumper.
6. 24-v alarm signal shown. For dry alarm contact, cut JW1 jumper and dry con-
tact will be available between ALl and AL2.
7. Transformer secondary ground via Complete C board standoffs, and screws
to control box. (Ground available from top two standoffs as shown.)
8. Suffix 1 designates association with lead compressor, suffix 2 with lag com-
pressor. Exception ALl, AL2, FP1, FP2, are per legend.
9. Refer to Thermostat Installation, Application and Operation Manual for control
wiring to the unit. Low voltage wiring must be "Class 1" and voltage rating
equal to or greater than unit supply voltage.
BRN _BLU
]E r--'_ SEE
__- s_ _- _ NOTE 7
_. ! \ol /BRN BI U -_Z i
R6 , _ R_LAY
I SEu , / P _ n!,
'zic
! .... ..¢_f_ ..... ,o_......_ ....
' ' CO 12
Fig. 4 -- Typical Aquazone TM 50PSW360 Complete C Control Wiring, 3-Phase

_O
AL
CAP --
CC
FP1
FP2
HP
JWl
LOC --
NEC --
P1
RVS --
TRANS --
LEGEND
Alarm Relay Contacts
Compressor Capacitor O_,-O Solenoid Coil
Compressor Contactor
Sensor, Source Low Temp Protection Thermistor
Sensor, Load Low Temp Protection
High Pressure Switch _L_
Jumper Wire for Alarm -_- Ground
Loss of Charge Pressure Switch Indicator Light
National Electrical Code _O_ G=Green, R=Red
Field Wiring Terminal Block (Comp On) (Alarm Light)
Reversing Valve Solenoid
Transformer O--f"=.O Circuit Breaker
Factory Line Voltage Wiring
Factory Low Voltage Wiring O-_ High Pressure Switch
Field Line Voltage Wiring Low Pressure Switch
Field Low Voltage Wiring
Printed Circuit Trace O-[[]_ Fuse
Relay/Contactor Coil
RED RED
_ BL_
NEUTRAL ON 265V SYSTEMS
_ZqSEE
[_ NOTE 6
mm TRANS
BLK COM SEE NOTE 3 BLU
! 208V 230V
="1 uI TYPECAL HEAT
B _ PUMP CONTROLLER
BI SEE NOTE 5
i i r ................. 1 COMPRESSOR
B I ......
B0I
II I TO AQUA STAT
I_ I "AND CHANGE OVER "COOUNG
B u 0I-- ....
I_ " SWITCH "
LK I I
u i i
l _ ! L _"VAC__
II I L................. J
B I
I I
| I NOTE 2 VlO
| I _
| I --
| I
| I
POWER SUPPLY
REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY
SEENOTE2
NOTES:
1. Compressor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. Transformer is wired to 265-v (BRN) lead for 265-1-60 units. For 220-240-v or
230-v units, disconnect BRN lead at L1 and connect ORG lead to L1. Close
open end of BRN and RED leads with insulation tape. For 208-v unit, discon-
nect BRN lead at L1 and connect RED lead to L1. Close open ends of BRN
and ORG leads with insulation tape. Transformer is energy limiting or may
have circuit breaker.
4. FP1 thermistor provides freeze protection for source water. When using anti-
freeze solutions, cut JW3 jumper.
5. Check installation wiring information for controller hookup. Control wiring must
be Class 1 and voltage rating equal to or greater than unit supply voltage.
6. Transformer secondary ground via Complete C board standoff and screws to
control box. (Ground available from top 2 standoffs as shown.)
ALARM
_-RED
COMPRESSOR
RUN
CONTROL LOGIC
SEE
NOTE 6
1
RED _O'_H P
RED
BLU _LOC
BRN
GRY "_FPF
GRY SEE
.._._jNOTE A
VlO FPE
VIO
BRN _RVS
ORG
COMPONENT LOCATION
TRANS _
GROUI
©
Fig. 5 -- Typical Aquazone TM 50PSW036-180 Complete C Control Wiring, Single-Phase

S
LEGEND
j ..
i"
J __N
E_
O O O O
co_ _% z co RR_ I
POWER SUPPLY REFER TO DATA PLATE
USE COPPER CONDUCTORS ONLY,
SEE NOTE 2
i
I
AL -- Alarm Relay Contacts
CB -- Circuit Breaker oUO
CC -- Compressor Contactor
COMP -- Compressor r,.-A,.._
FP1 -- Sensor, Source Low Temp Protection
FP2 -- Sensor, Load Low Temp Protection
HP -- High Pressure Switch
JW4 -- Jumper Wire for Alarm
LED -- Light-Emitting Diode _L
LOC -- Loss of Charge Pressure Switch
LON -- Local Operating Network
NEC -- National Electrical Code ('')
P1 -- Field Wiring Terminal Block
PDB -- Power Distribution Block
RVS -- Reversing Valve Solenoid O-"%'O
TRANS -- Transformer
Factory Line Voltage Wiring ""-2:_ "
Factory Low Voltage Wiring
Field Line Voltage Wiring _:_
Field Low Voltage Wiring
Printed Circuit Trace
Relay/Contactor Coil
Solenoid Coil
Thermistor
Ground
Indicator Light
G=Green, R=Red
(Comp On) (Alarm Light)
Circuit Breaker
High Pressure Switch
Low Pressure Switch
Fuse
us
i
COMPLETE O I i
SEE NOTE 8
,io
VlO
*Optional.
NOTES:
1. Compressor motor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. Power SUDDIV:460 V and 575 v -- Transformer is factory wired for 460 v and
575 v power supply with wire lead colors as shown in the chart. The trans-
former is 75 va and is protected with a circuit breaker in the secondary circuit.
4. Power Supply: 208-230 v -- Transformer is factory wired for 208 v power
supply. For 230 v power supply, disconnect red lead at H2 and reconnect it at
H3. The transformer is 150 va and is protected with primary and secondary
fuses.
5. FP1 thermistor provides low temp protection for source water. When using
antifreeze solutions, cut JW3 jumper.
6. Factory cut JWl jumper. Dry contact will be available between ALl and AL2.
7. Transformer secondary ground via Complete C board standoffs, and screws
to control box. (Ground available from top two standoffs as shown.)
8. Suffix 1 designates association with lead compressor, suffix 2 with lag com-
pressor. Exception ALl, AL2, FP1, FP2, are per legend.
9. Refer to LON, or Thermostat Installation, Application and Operation Manual
for control wiring to the unit. Low voltage wiring must be "Class 1" and voltage
rating equal to or greater than unit supply voltage.
Fig. 6 -- Typical Aquazone TM 50PSW360 Complete C and LON Controller Control Wiring, 3-Phase

AL
ASTAT
CB
CAP
CC
FP1
FP2
GND
HWG
HP
JWl
LOC
NEC
-- Alarm Relay Contacts P1 --
-- Aquastat PDB --
-- Circuit Breaker RVS --
-- Compressor Capacitor TRANS --
-- Compressor Contactor
-- Sensor, Source Low Temp Protection
-- Sensor, Load Low Temp Protection
-- Ground
-- Hot Water Generator
-- High Pressure Switch
-- Jumper Wire for Alarm -- •
-- Loss of Charge Pressure Switch
-- National Electrical Code
LEGEND
<
Field Wiring Terminal Block
Power Distribution Block
Reversing Valve Solenoid
Transformer
Factory Line Voltage Wiring
Factory Low Voltage Wiring
Field Line Voltage Wiring
Field Low Voltage Wiring
Printed Circuit Trace
Relay/Contactor Coil
PRIMARY PRi_ARY
VOLTAGE LEAD COLOR
2_0 ORG
380 _10
_ZO BRN
_60 BLK/RED
bib GRY
1RANSFORHER PRIMARY
F* LEAD COLORS
t
POWER SUPPLY
RE=ER TO DATA P_ATE
USE COPPER CONDUCTORS ONLY
SEE NOTE 2
BLU
OR
at K
z_fi
B_K
P_v"_--=ZT-CD ', ] I_-
i i .... [ T_ 3
i cl t, ,,
onP E
zq,
SEE
NOTE 3 TRmNS BLU
ORG
2_0_ 2&V
TY E ---i
COOUN',
za VAC
CO_ION
I
I
I
I
I
st _uTlo.
E c< Rt
u
_b
)
con" SRN
RED
SR"
BRN _ YEL
VlO _ YEL _ SE
III_A_ I HP _ _ IHPI
_ I I I _ ....... _ I I I 2} --RED _
IIs_ h _ BLU
' ' ' z-_ LOD -- LOC
JI.... L ..... _o,__ ....
.... M" ._. i _--ER,
,_J --
--_--_Pr_ %[h°mplere_Ii
............ J
Complete C I(NOTE 7)
Solenoid Coil 0-'_'-.,0 Circuit Breaker
(_ Thermistor _ High Pressure Switch
Ground _ Low Pressure Switch
Indicator Light O-E]-O Fuse
_0_ G=Green, R=Red
(Comp On) (Alarm Light)
NOTES:
1. Compressor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. 208/230-v transformers will be connected for 208-v operation. For 230-v oper-
ation, disconnect RED lead at L1, and attach ORG lead to L1. Close open end
of RED lead with insulating tape. 380/420-v transformers will be connected for
380-v operation. For 420-v operation, disconnect VIO lead at L1, and attach
BRN lead to L1. Close open end of ViO lead with insulating tape.
4. FP1 thermistor provides freeze protection for source water. When using anti-
freeze solutions, cut JW3 jumper.
5. Typical heat pump thermostat wiring shown. Refer to thermostat installation
instructions for wiring to the unit. Thermostat wiring must be Class 1 and volt-
age rating equal to or greater than unit supply voltage.
6. Transformer secondary ground via Complete C board standoff and screws to
control box. (Ground available from top 2 standoffs as shown.)
7. Suffix 1 designates association with lead compressor. Suffix 2 designates lag
compressor. Exceptions are ALl, AL2, FP1, FP2.
GRY
BR _ BLU
"_lBRN BLU -- _NOTE (_
I_ "_ uPS , ' FPI _= FFI >
----) I9 --fJRN PD_ CB
....... i+-R @1
ORO
I
J
Fig. 7 --Typical Aquazone _M50PSW036-180 Complete C Control Wiring, 3-Phase
Complete C 2

Co
LEGEND
AL
CB
CC
COMP
FP1
FP2
HP
JW4
LED
LOC
NEC
P1
PDB
-- Alarm Relay Contacts
-- Circuit Breaker
-- Compressor Contactor
-- Compressor
-- Sensor, Source Low Temp Protection
-- Sensor, Load Low Temp Protection
-- High Pressure Switch
-- Jumper Wire for Alarm
-- Light-Emitting Diode
-- Loss of Charge Pressure Switch
-- National Electrical Code
-- Field Wiring Terminal Block
-- Power Distribution Block
RVS -- Reversing Valve Solenoid
TRANS -- Transformer
Factory Line Voltage Wiring
Factory Low Voltage Wiring
Field Line Voltage Wiring
Field Low Voltage Wiring
Printed Circuit Trace
Relay/Contactor Coil
O_,-O
@
__L__
Solenoid Coil O-,"'-O Circuit Breaker
Thermistor _ High Pressure Switch
Ground O-_ Low Pressure Switch
Indicator Light
G=Green, R=Red o-EE_ Fuse
(Comp On) (Alarm Light)
i
I.
L
o o o o
CO*_R b\ 2 COHPR RUN I
[pANS 0_
O_lu_Do =Z
I
J
POWER SUPPLY REFER TO DATA PLATE WRE COLORS L I L _ _ 2&VAC l LEAD COLOR VOL AG
USE COPPER CONDUCTORS ONLY, _ _YEL _ 250208
SEE NOTE2 (2o8v z.v E 3so
&20
H5 X BU BRN
GR.D _ i II _ ] (25BV) COM I bib
*Optional.
NOTES:
1. Compressor motor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. Power SuuDIv: 460 v and 575 v -- Transformer is factory wired for 460 v and
575 v power supply with wire lead colors as shown in the chart. The trans-
former is 75 va and is protected with a circuit breaker in the secondary circuit.
4. Power Supply: 208-230 v -- Transformer is factory wired for 208 v power
supply. For 230 v power supply, disconnect red lead at H2 and reconnect it at
H3. The transformer is 150 va and is protected with primary and secondary
fuses.
5. FP1 thermistor provides low temp protection for source water. When using
antifreeze solutions, cut JW3 jumper.
6. 24-v alarm signal shown. For dry alarm contact, cut JW1 jumper and dry con-
tact will be available between ALl and AL2.
7. Transformer secondary ground via Deluxe D board standoffs, and screws to
control box. (Ground available from top two standoffs as shown.)
8. Suffix 1 designates association with lead compressor, suffix 2 with lag com-
pressor. Exception ALl, AL2, FP1, FP2, are per legend.
9. Refer to Thermostat Installation, Application and Operation Manual for control
wiring to the unit. Low voltage wiring must be "Class 1" and voltage rating
equal to or greater than unit supply voltage.
_7
:_
: ::::_:_ :
sT_s L_
::_
Fig. 8 -- Typical Aquazone TM 50PSW360 Deluxe D Control Wiring, 3-Phase

AL
CB
CC
COMP
FP1
FP2
HP
JW4
LED
LOC
LON
NEC
P1
-- Alarm Relay Contacts
-- Circuit Breaker
-- Compressor Contactor
-- Compressor
-- Sensor, Source Low Temp Protection
-- Sensor, Load Low Temp Protection
-- High Pressure Switch
-- Jumper Wire for Alarm
-- Light-Emitting Diode
-- Loss of Charge Pressure Switch
-- Local Operating Network
-- National Electrical Code
-- Field Wiring Terminal Block
LEGEND
PDB -- Power Distribution Block
RVS -- Reversing Valve Solenoid
TRANS -- Transformer
Factory Line Voltage Wiring
Factory Low Voltage Wiring
Field Line Voltage Wiring
Field Low Voltage Wiring
--. -- Printed Circuit Trace
cO e Coil O_"%'O Circuit Breaker
Relay/Contactor
Solenoid Coil _ High Pressure Switch
Thermistor _ Low Pressure Switch
@-[Z] -O Fuse
Ground
Indicator Light
_O_ G=Green, R=Red
(Comp On) (Alarm Light)
o7I
J
*Optional.
NOTES:
1. Compressor motor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. Power Supply: 460 v and 575 v -- Transformer is factory wired for 460 v and
575 v power supply with wire lead colors as shown in the chart. The trans-
former is 75 va and is protected with a circuit breaker in the secondary circuit.
4. Power Suoolv: 208-230 v -- Transformer is factory wired for 208 v power
supply. For 230 v power supply, disconnect red lead at H2 and reconnect it at
H3. The transformer is 150 va and is protected with primary and secondary
fuses.
5. FP1 thermistor provides low temp protection for source water. When using
antifreeze solutions, cut JW3 jumper.
6. Factory cut JW4 jumper. Dry contact will be available between ALl and AL2.
7. Transformer secondary ground via Deluxe D board standoffs, and screws to
control box. (Ground available from top two standoffs as shown.)
8. Suffix 1 designates association with lead compressor, suffix 2 with lag com-
pressor. Exception ALl, AL2, FP1, FP2, are per legend.
9. Refer to LON, or Thermostat Installation, Application and Operation Manual
for control wiring to the unit. Low voltage wiring must be "Class 1" and voltage
rating equal to or greater than unit supply voltage.
Z t _:; _ :?l [
-:;7_
ut,
Fig. 9 -- Typical Aquazone TM 50PSW360 Deluxe D and LON Controller Control Wiring, 3-Phase

LEGEND
PREMIER
LINK PWR
HS1/EXH/RVS
im--
im--
ll--
CR -- Control Relay L_
LWT -- Leaving Water Temperature Sensor
SAT -- Supply Air Temperature Sensor CMP1
SPT -- Space Temperature Sensor _
NOTE: Reversing valve is on in Cooling mode, FAN
d6 35 J4
@
CR
O
0-
T
I
I
4-
I
I
I
Fig. 10 -- PremierLink TM Controller Applications with Complete C Control
COMPLETE
C
CONTROL
CR
I
I
r-
I
LEGEND
LWT -- Leaving Water Temperature Sensor
SAT -- Supply Air Temperature Sensor
SPT -- Space Temperature Sensor
NOTE: Reversing valve is on in Cooling mode,
PREMIER
LINK
@
I I-.---
im
i-.il
0-
-----0
r-g
IO--
Llm
--O
PWR
HS2
HS1
CMP2
CMP1
FAN
J6 J5 J4
0-
0-
O-
0-
"1 F-
I I
I I
L"T
I I
I p.
.J
I
I
.L
I
I
I
I
I
..... "1 ....
"1 ....
I
I4
I
I
I
I-,..!
_l
DELUXE
D
CONTROL
"q_ Y1
4D Y2
4P W1
4 IPO/W2
b G
R
P C
DALl
Fig. 11 -- PremierLink Controller Applications with Deluxe D Control
14

L__r k rx_%, 1
Contactor -CCl Contactor -CC2
Grnd Po_%_g,b,.,onTran_f...... ]
_2
_c
33
C Control #1
g_
_o
[J
C Control #2
Fig. 12 -- Typical Field Wiring
SUPPLY VOLTAGE- Operating voltage to unit must be
within voltage range indicated on unit nameplate.
Voltages between phases must be balanced within 2%.
Use the following formula to determine the percentage voltage
imbalance:
% Voltage Imbalance
= 100 x max voltage deviation from average voltage
average voltage
Example: Supply voltage is 460-3-60.
ABCAB = 452-v
BC = 464-v
AC = 455-v
Average Voltage = 452 + 464 + 455
3
1371
3
= 457
Determine maximum deviation from average voltage:
(AB) 457 - 452 = 5-v
(BC) 464 - 457 = 7-v
(AC) 457 - 455 = 2-v
Maximum deviation is 7-v.
Determine percent voltage hnbalance.
7
% Voltage hnbalance = 100 x 45----5-
= 1.53%
This amount of phase hnbalance is satisfactory as it is
below the maximum allowable 2%.
Operation on hnproper line voltage or excessive phase
imbalance constitutes abuse and may cause damage to electri-
cal components.
NOTE: If more than 2% voltage imbalance is present, contact
local electric utility.
EXTERNAL LOOP POWER CONNECTION -- If the unit
is to be connected to an external loop pump or flow controller,
connect the pump to the loop pump terminal block PB1. The
maxilnum power handling is 4 amps at 240-v. The pumps will
automatically cycle as required by the unit.
208-V OPERATION--All 208/240-v units are factory
wired for 208-v. The transformers may be switched to 240-v
operation (as illustrated on the wiring diagram) by switching
the red (208-v) wire with the orange (240-v) wire at the L2
terminal.
460-VOLT OPERATION--Units using 460-v and internal
secondary pump will require a neutral wire from the supply
side in order to feed accessory with 265-v.
Step 7-- Wire Low Voltage Connections
THERMOSTAT CONNECTIONS
The thermostat should be wired directly to the Aquazone TM
control board. See Fig. 4-9.
WATER FREEZE PROTECTION -- The Aquazone control
allows the field selection of source fluid freeze protection
points through jumpers. The factory setting of julnper JW3
(FP1) is set for water at 30 E In earth loop applications, julnper
JW3 should be clipped to change the setting to 10 F when
using antifreeze in colder earth loop applications. See Fig. 13.
) BR BRG CCG CC
Clip JW3
protection s,_ __:P_,Lo*T,,_
Clip
for dry
contact
OY
©
P2
12
©
P3
=gg
©
Fig. 13 _ Typical Aquazone Control Board
Jumper Locations (Complete C Control Shown)
ACCESSORY CONNECTIONS- The terminal labeled A
on the control is provided to control accessory devices such as
water valves, electronic air cleaners, humidifiers, etc. This sig-
nal operates with the compressor terminal. See Fig. 14. Refer
to the specific unit wiring schematic for details.
Terminal Strip
{C)v +
v
Typical
Water
Valve
Fig. 14 -- Typical Aquazone Accessory Wiring
(Deluxe D Control Shown)
NOTE: The A terminal should only be used with 24-v signals,
not line voltage signals.
IMPORTANT: Two-compressor units with Complete C or
Deluxe D controls wired to terminal A will be turned off if
the controls are in lockout mode, even if the other board is
in normal operating mode.
15

WATERSOLENOIDVALVES-- Watersolenoidvalves
maybeusedonvariableflowsystemsandgroundwaterinstal-
lations.A typicalwellwatercontrolvalvewiringwhichcan
limitwastewaterinalockoutconditionisshowninFig.14.A
slowclosingvalvemayberequiredtopreventwaterhalmner.
Whenusingaslowclosingvalve,specialwiringconditions
needtobeconsidered.Thevalvetakesapproximately60sec-
ondstoopen(verylittlewaterwillflowbefore45seconds)and
it activatesthecompressoronlyafterthevalveiscompletely
openedbyclosingitsendswitch.Whenwiredasshown,the
valvewillhavethefollowingoperatingcharacteristics:
1. Remainopenduringalockout.
2. Drawapproximately25to35-vathroughthe'°Y" signal
of the thermostat.
I IMPORTANT: This can overheat the anticipators of I
electromechanical thennostats. Only use relay based I
electronic thermostats.
PRE-START-UP
System Checkout EWhen the installation is complete,
follow the system checkout procedure outlined below before
starting up the system. Be sure:
1. Voltage is within the utilization range specifications of the
unit compressor and fan motor, and voltage is balanced
for 3-phase units.
2. Fuses, breakers and wire are correct size.
3. Low voltage wiring is complete.
4. Piping and system flushing is complete.
5. Air is purged from closed loop system.
6. System is balanced as required. Monitor if necessary.
7. Isolation valves are open.
8. Water control valves or loop pumps are wired.
9. Transfonner switched to lower voltage tap if necessary.
10. Service/access panels are in place.
11. Control field-selected settings are correct.
FIELD SELECTABLE INPUTS
Jumpers and DIP (dual in-line package) switches on the
control board are used to customize unit operation and can be
configured in the field.
IMPORTANT: Jumpers and DIP switches should only [
be clipped when power to control board has been turned I
off.
Complete C Control Jumper Settings (See
Fig. 4-7)
WATER COIL FREEZE PROTECTION (FP1) LIMIT
SETTING--Select jumper 3, (JW3-FP1 Low Temp) to
choose FP1 limit of 10 F or 30 E To select 30 F as the lhnit,
DO NOT clip the jumper. To select 10 F as the limit, clip the
jumper.
ALARM RELAY SETTING -- Select jumper 1 (JWl-AL2
Dry) for connecting alarm relay terminal (AL2) to 24 vac (R)
or to remain as a dry contact (no connection). To connect AL2
to R, do not clip the jumper. To set as dry contact, clip the
jumper.
Complete C Control DIP Switches EThe
Complete C control has one DIP switch block with five
switches. See Fig. 4-7.
PERFORMANCE MONITOR (PM) -- DIP switch 1 will
enable or disable this feature. To enable the PM, set the switch
to ON. To disable the PM, set the switch to OFF.
STAGE 2 -- DIP switch 2 will enable or disable compressor
delay. Set DIP switch to OFF for Stage 2 in which the compres-
sor will have a 3-second delay before energizing. DIP switch 3
is not used. DIP switch 4 is not used. DIP switch 5 is used to
initiate one or 3 tries for the FP1 fault. If water freeze protec-
tion for the water coil is needed, then DIP switch 5 can be set to
lock out on the FP1 fault after one try.
Deluxe D Control Jumper Settings (See
Fig. 8 and 9)
WATER COIL FREEZE PROTECTION (FP1) LIMIT
SETTING--Select jumper 3, (JW3-FP1 Low Temp) to
choose FP1 lhnit of 10 F or 30 E To select 30 F as the limit,
DO NOT clip the jumper. To select 10 F as the lhnit, clip the
jumper.
ALARM RELAY SETTING- Select jumper 4 (JW4-AL2
Dry) for connecting alarm relay terminal (AL2) to 24 vac (R)
or to remain as a dry contact (no connection). To connect AL2
to R, do not clip the jumper. To set as dry contact, clip the
jumper.
LOW PRESSURE SETTING -- The Deluxe D control can
be configured for Low Pressure Setting (LP). Select jumper 1
(JW1-LP Norm Open) for choosing between low pressure in-
put normally opened or closed. To configure for normally
closed operation, do not clip the jumper. To configure for nor-
mally open operation, clip the jumper.
Deluxe D Control DIP Switches _The Deluxe D
control has 2 DIP switch blocks. Each DIP switch block has 8
switches and is labeled either S1 or $2 on the circuit board. See
Fig. 8 and 9.
DIP SWITCH BLOCK 1 (S1) -- This set of switches offers
the following options for Deluxe D control configuration:
Performance Monitor (PM) -- Set switch 1 to enable or dis-
able performance monitor. To enable the PM, set the switch to
ON. To disable the PM, set the switch to OFE
Compressor Relay Staging Operation -- Switch 2 will en-
able or disable compressor relay staging operation. The com-
pressor relay can be set to turn on with Stage 1 or Stage 2 call
from the thermostat. This setting is used with dual stage units
(units with 2 compressors and 2 Deluxe D controls) or in mas-
ter/slave applications. In master/slave applications, each com-
pressor and fan will stage according to its switch 2 setting. If
switch is set to Stage 2, the compressor will have a 3-second
delay before energizing during Stage 2 demand.
NOTE: If DIP switch is set for Stage 2, the alarm relay will not
cycle during Test mode.
Heating/Cooling Thermostat Type -- Switch 3 provides selec-
tion of thermostat type. Heat pump or heat/cool thermostats
can be selected. Select OFF for heat/cool thermostats. When in
heat/cool mode, Y1 is used for cooling Stage 1, Y2 is used for
cooling Stage 2, Wl is used for heating Stage 1 and O/W2 is
used for heating Stage 2. Select ON for heat pump applications.
In heat pump mode, Y1 used is for compressor Stage 1, Y2 is
used for compressor Stage 2, Wl is used for heating Stage 3 or
emergency heat, and O/W2 is used for RV (heating or cooling)
depending upon switch 4 setting.
O/B Thermostat Type -- Switch 4 provides selection for heat
pump O/B thermostats. O is cooling output. B is heating out-
put. Select ON for heat pumps with O output. Select OFF for
heat pumps with B output.
Dehumidification Fan Mode -- Switch 5 provides selection
of normal or dehumidification fan mode. Select OFF for dehu-
midification mode. The fan speed relay will remain OFF dur-
ing cooling Stage 2. Select ON for normal mode. The fan speed
relay will turn on during cooling Stage 2 in normal mode.
Switches 6. 7. 8 -- Not used.
DIP SWITCH BLOCK 2 ($2) -- Not used.
16

Deluxe D Control Accessory Relay Configura-
tions (See Tables 4 and 5) -- The following acces-
sory relay settings are applicable for Deluxe D control only:
CYCLE WITH COMPRESSOR -- In this configuration, the
relay will be ON any time the compressor relay is on.
DIGITAL NIGHT SETBACK (NSB) -- In this configura-
tion, the relay will be ON if the NSB input is connected to
ground C.
NOTE: If there are no relays configured for digital NSB, then
the NSB and OVR inputs are automatically configured for
mechanical operation.
MECHANICAL NIGHT SETBACK -- When NSB input is
connected to ground C, all thermostat inputs are ignored. A
thermostat setback heating call will then be connected to the
OVR input. If OVR input becomes active, then the Deluxe D
control will enter night low limit (NLL) staged heating mode.
The NLL staged heating mode will then provide heating during
the NSB period.
WATER VALVE (SLOW OPEN1NG) -- If relay is config-
ured for water valve (slow opening), the relay will start 60 sec-
onds prior to starting compressor relay.
To avoid equipment damage, DO NOT leave system filled
in a building without heat during the winter unless anti-
freeze is added to system water. Condenser coils never
fully drain by themselves and will freeze unless winterized
with antifreeze.
Table 4 -- DIP Switch Block $2 --
Accessory 1 Relay Options
ACCESSORY 1 DIP SWITCH POSITION
RELAY OPTIONS 1 2 3
Digital NSB Off On On
Water Valve -- Slow Opening On Off On
LEGEND
NSB -- Night Setback
NOTE: All other DIP switch combinations are invalid,
Table 5 -- DIP Switch Block $2 --
Accessory 2 Relay Options
ACCESSORY 2 DIP SWITCH POSITION
RELAY OPTIONS 4 5 6
Digital NSB Off On On
Water Valve -- Slow Opening On Off On
LEGEND
NSB -- Night Setback
NOTE: All other DIP switch combinations are invalid,
START-UP
Use the procedure outlined below to initiate proper unit
start-up.
NOTE: This equipment is designed for indoor installation
only.
Operating Limits (See Table 6)
ENVIRONMENT- This equipment is designed for indoor
installation ONLY. Extreme variations in temperature, humidi-
ty and corrosive water or air will adversely affect the unit per-
formance, reliability and service life.
POWER SUPPLY- A voltage variation of+ 10% of name-
plate utilization voltage is acceptable.
UNIT STARTING CONDITIONS -- All units start and op-
erate in an ambient of 45 F with entering air at 40 F and enter-
ing water at 20 F.
NOTE: These operating conditions are not normal or continu-
ous operating conditions. It is assumed that start-up is for the
purpose of bringing the building space up to occupancy
temperature.
When the disconnect switch is closed, high voltage is
present in some areas of the electrical panel. Exercise cau-
tion when working with the energized equipment.
Table 6 -- 50PSW Unit Operating Limits
WATER LIMITS COOLING HEATING
(F) (F)
SOURCE COIL
Min EnteringWater 50 20
Normal EnteringWater 85 60
Max EnteringWater 110 70
LOADCOIL
Min EnteringWater 50 60
Normal EnteringWater 60 100
Max EnteringWater 90 120
Unit Start-Up
1. Turn off all power to unit.
2. Adjust all valves to full open position.
3. Restore power to unit.
4. Operate each unit in the cooling cycle. See Table 6 for
unit entering water temperatures.
5. Operate each heat pump in the heating cycle ilranediately
after checking cooling cycle operation.
NOTE: A time delay will prevent the compressor from
re-starting for approximately 5 minutes. The time delay
function can be ovemdden on the Complete C control
board.
6. If unit fails to operate, perform the following system
checks:
a. Check the voltage and current. Be sure they com-
ply with electrical data on unit nameplate.
b. Check for loose terminal screws where wire con-
nections have been made on both the line and low-
voltage terminal boards.
c. Check the supply and return piping. Be sure they
are properly connected to the inlet and outlet con-
nections on the unit.
d. If the checks described above fail to reveal the
problem and the unit still will not operate, contact
a trained service technician to ensure proper
diagnosis.
Scroll Compressor Rotation -- It is important to be
certain compressor is rotating in the proper direction. To
determine whether or not compressor is rotating in the proper
direction:
1. Connect service gages to suction and discharge pressure
fittings.
2. Energize the compressor.
3. The suction pressure should drop and the discharge
pressure should rise, as is normal on any start-up.
17

If thesuctionpressuredoesnotdropandthedischarge
pressuredoesnotrisetonormallevels:
1. Turnoffpowertotheunit.Installdisconnecttag.
2. Reverseanytwooftheunitpowerleads.
3. Reapplypowertotheunitandverifypressuresarecor-
rect.Thesuctionanddischargepressurelevelsshould
nowmovetotheirnormalstart-uplevels.
When the compressor is rotating in the wrong direction, the
unit makes an elevated level of noise and does not provide
cooling. Damage to compressor will occur if allowed to
operate in this manner.
After a few minutes of reverse operation, the scroll com-
pressor internal overload protection will open, thus activating
the unit lockout. This requires a manual reset. To reset, turn the
thermostat on and then off.
NOTE: There is a 5-minute time delay before the compressor
will start.
Flow Regulation E Flow regulation can be accom-
plished by two methods. Most water control valves have a flow
adjustment built into the valve. By measuring the pressure drop
through the unit heat exchanger, the flow rate can be deter-
mined. Adjust the water control valve until the flow of 1.5 to
2gpm is achieved. Since the pressure constantly varies, two
pressure gages may be needed in some applications. See
Table 7 for heat exchanger pressure drops.
An alternative method is to install a flow control device.
These devices are typically an orifice of plastic material de-
signed to allow a specified flow rate that are mounted on the
outlet of the water control valve. Occasionally these valves
produce a velocity noise that con be reduced by applying some
back pressure. To accomplish this, slightly close the leaving
isolation valve of the water regulating device.
Table 7 -- Heat Exchanger Pressure Drop
Load/Outdoor Coax
UNIT PRESSURE DROP (psi)
50PSW GPM 30 °F 50 °F 70 °F 90 °F
5.0 4.2 2.3 1.6 1.3
036 7.0 5.8 4.1 2.9 2.6
9.0 8.4 5.3 4.6 4.3
7.5 3.1 1.9 1.4 1.1
060 11.3 5.0 3.4 2.9 2.2
15.0 7.4 5.6 4.6 3.9
15.0 4.3 2.6 2.0 1.6
120 22.6 7.0 4.8 3.9 3.1
30.0 10.3 7.8 6.4 5.3
18.0 0.8 0.4 0.2 0.1
180 27.0 2.7 1.7 1.5 1.4
35.0 4.8 3.3 3.0 2.8
35.0 1.6 1.2 1.0 0.9
360 53.0 4.0 3.6 3.3 3.0
70.0 7.2 6.5 5.9 5.5
Source/Outdoor Coax
UNIT PRESSURE DROP (psi)
50PSW GPM 30 °F 50 °F 70 °F 90 °F
5.0 4.2 2.6 2.3 1.8
036 7.0 5.8 4.1 4.1 3.1
9.0 8.4 6.0 5.5 4.9
7.5 3.1 2.2 1.9 1.5
060 11.3 5.0 4.0 3.6 3.1
15.0 7.4 6.1 5.5 5.0
15.0 4.3 3.1 2.7 2.1
120 22.6 7.0 5.6 5.0 4.3
30.0 10.3 8.5 7.7 7.0
18.0 0.8 0.4 0.2 0.1
180 27.0 2.7 1.7 1.5 1.4
35.0 4.8 3.3 3.0 2.8
35.0 1.6 1.2 1.0 0.9
360 53.0 4.0 3.6 3.3 3.0
70.0 7.2 6.5 5.9 5.5
Cleaning and Flushing ECleaning and flushing of
the piping system is the single most important step to ensure
proper start-up and continued efficient operation of the system.
To avoid possible Njury or death due to electrical shock,
open the power supply disconnect switch and secure it in
an open position before flushing system. Install lockout
tag.
Follow the instructions below to properly clean and flush
the system:
1. Verify electrical power to the unit is disconnected and
lockout tag installed.
2. Install the system with the supply hose connected directly
to the return riser valve. Use a single length of flexible
hose.
3. Open all air vents. Fill the system with the water. DO
NOT allow system to overflow. Bleed all air from the
system. Pressurize and check the system for leaks and re-
pair appropriately.
4. Verify all strainers are in place. Start the pumps, and sys-
tematically check each vent to ensure all air is bled from
the system.
5. Verify make-up water is available. Adjust make-up water
appropriately to replace the air which was bled from the
system. Check and adjust the water/air level in the expan-
sion tank.
6. Raise the loop temperature to approximately 85 E Open
the drain at the lowest point in the system. Adjust the
make-up water replacement rate to equal the rate of bleed.
7. Refill the system and add trisodium phosphate in a pro-
portion of approximately one pound per 150 gal. of water
(or other equivalent approved cleaning agent).
To avoid possible damage to a plastic (PVC) piping sys-
tem, do not allow temperatures to exceed 110 F.
Raise the loop temperature to 100 F. Circulate the solu-
tion for a minimum of 8 to 24 hours. At the end of this
period, shut off the circulating pump and drain the solu-
tion. Repeat system cleaning if desired.
8. When the cleaning process is complete, remove the short-
circuited hose. Reconnect the hoses to the proper supply,
and return the connections to each of the units. Refill the
system and bleed offall air.
9. Test the system pH with litmus paper. The system water
should be slightly alkaline (pH of 7.5 to 8.5). Add chemi-
cals, as appropriate, to maintain acidity levels.
10. When the system is successfully cleaned, flushed, refilled
and bled, restore power.
11. Check the main system panels, safety cutouts and alarms.
Set the controls to properly maintain loop temperatures.
DO NOT use "Stop Leak" or any similar chemical agent in
this system. Addition of these chemicals to the loop water
will foul the system and inhibit unit operation.
Antifreeze _In areas where entering loop temperatures
drop below 40 F or where piping will be routed through areas
subject to freezing, antifreeze is needed.
18

Alcoholsandglycolsare colrunonly used as antifreeze
agents. Freeze protection should be maintained to 15 F below
the lowest expected entering loop temperature. For example, if
!he lowest expected entering loop temperature is 30 F, the leav-
ing loop temperature would be 22 to 25 E Therefore, the freeze
_rotection should be at 15 F (30 F - 15 F = 15 F).
IMPORTANT: All alcohols should be pre-mixed and
pumped from a reservoir outside of the building or
introduced under water level to prevent alcohols from
fuming.
Calculate the total volume of fluid in the piping system. See
Table 8. Use the percentage by volume in Table 9 to determine
the amount of antifreeze to use. Antifreeze concentration
should be checked from a well mixed sample using a hydrome-
ter to measure specific gravity.
FREEZE PROTECTION SELECTION -- The 30 F FP1
factory setting (water) should be used to avoid freeze damage
to the unit.
Once antifreeze is selected, the JW3 jumper (FP1) should
be clipped on the control to select the low temperature (anti-
freeze 10 F) set point to avoid nuisance faults.
Table 8 -- Approximate Fluid Volume (gal.)
per 100 Ft of Pipe
PIPE DIAMETER (in.)
Copper 1
1.25
1.5
Rubber Hose
Polyethylene
1
3/4IPS SDR11
1 IPS SDR11
11/4IPS SDR11
1/2IPS SDR11
2 IPS SDR11
11/4 IPS SCH40
11/2IPS SCH40
2 IPS SCH40
VOLUME (gal.)
4.1
6.4
9.2
3.9
2.8
4.5
8.0
10.9
18.0
8.3
10.9
17.0
LEGEND
IPS -- Internal Pipe Size
SeN -- Schedule
SDR -- Standard Dimensional Ratio
NOTE: Volume of heat exchanger is approximately 1.0 gallon.
Table 9 -- Antifreeze Percentages by Volume
ANTIFREEZE
Methanol (%)
100% USP FoodGrade
Propylene Glycol(%)
MINIMUM TEMPERATURE FOR
FREEZE PROTECTION (F)
10 15 20 25
25 21 16 10
38 30 22 15
Cooling Tower/Boiler Systems -- These systems
typically use acolrnnon loop maintained at 60 to 90 E The use
of a closed circuit evaporative cooling tower with a secondary
heat exchanger between the tower and the water loop is recom-
mended. If an open type cooling tower is used continuously,
chemical treatment and filtering will be necessary.
Ground Coupled, Closed Loop and Plateframe
Heat Exchanger Well Systems--These systems al-
low water temperatures from 30 to 110 E The external loop
field is divided up into 2 in. polyethylene supply and return
lines. Each line has valves connected in such a way that upon
system start-up, each line can be isolated for flushing using only
the system pumps. Air separation should be located in the pip-
ing system prior to the fluid re-entering the loop field.
OPERATION
Power Up Mode -- The unit will not operate until all the
inputs, terminals and safety controls are checked for normal
operation.
NOTE: The compressor will have a 5-minute anti-short cycle
upon power up.
Units with Aquazone TM Complete C Control
STANDBY -- The Y and W terminals are not active in Stand-
by mode, however the O and G terminals may be active, de-
pending on the application. The compressor will be off.
COOLING- The Y and O terminals are active in Cooling
mode. After power up, the first call to the compressor will ini-
tiate a 5 to 80 second random start delay and a 5-minute anti-
short cycle protection time delay. After both delays are com-
plete, the compressor is energized.
NOTE: On all subsequent compressor calls the random start
delay is omitted.
HEATING STAGE 1--Terminal Y is active in heating
Stage 1. After power up, the first call to the compressor will
initiate a 5 to 80 second random start delay and a 5-minute anti-
short cycle protection tflne delay. After both delays are
complete, the compressor is energized.
NOTE: On all subsequent compressor calls the random start
delay is omitted.
HEATING STAGE 2 -- To enter Stage 2 mode, terminal W is
active (Y is already active). Also, the G terminal must be active
or the W terminal is disregarded. The compressor relay will re-
main on and EH1 (emergency heat) is ilmnediately turned on.
EH2 will turn on after 10 minutes of continual Stage 2 demand.
NOTE: EH2 will not turn on (or if on, will turn ot_ if FP1
(freeze protection) temperature is greater than 45 F and FP2 is
greater than 110 E
EMERGENCY HEAT -- In emergency heat (EH) mode, ter-
minal W is active while terminal Y is not. Terminal G must be
active or the W terminal is disregarded. EH1 is ilrnnediately
turned on. EH2 will turn on after 5 minutes of continual emer-
gency heat demand.
Units with Aquazone Deluxe D Control
STANDBY/FAN ONLY -- The compressor will be off. The
fan enable, fan speed, and reversing valve (RV) relays will be
on if inputs are present. If there is a Fan 1 demand, the fan en-
able will ilrnnediately turn on. If there is a Fan 2 demand, the
fan enable and fan speed will ilrnnediately turn on.
NOTE: DIP switch 5 on S1 does not have an effect upon Fan 1
and Fan 2 outputs.
HEATING STAGE 1 -- In Heating Stage 1 mode, the fan en-
able and compressor relays are turned on ilrnnediately. Once
the demand is removed, the relays are turned off and the con-
trol reverts to standby mode. If there is a master/slave or dual
compressor application, all compressor relays and related func-
tions will operate per their associated DIP switch 2 setting on
S1.
HEATING STAGE 2 -- In Heating Stage 2 mode, the fan en-
able and compressor relays remain on. The fan speed relay is
turned on ilmnediately and turned off hrunediately once the de-
mand is removed. The control reverts to Heating Stage 1 mode.
If there is a master/slave or dual compressor application, all
compressor relays and related functions will operate per their
associated DIP switch 2 setting on S1.
HEATING STAGE 3 -- In Heating Stage 3 mode, the fan en-
able, fan speed and compressor relays remain on. The EH1 out-
put is turned on ilrnnediately. With continuing Heat Stage 3 de-
mand, EH2 will turn on after 10 minutes. EH1 and EH2 are
turned off hrunediately when the Heating Stage 3 demand is re-
moved. The control reverts to Heating Stage 2 mode.
19

OutputEH2willbeoffifFP1isgreaterthan45FandFP2
(whenshorted)isgreaterthanll0 F duringHeatingStage3
mode.Thisconditionwillhavea30-secondrecognitiontime.
Also,duringHeatingStage3mode,EH1,EH2,fanenable,and
fanspeedwillbeONifGinputisnotactive.
EMERGENCYHEAT- Inemergencyheatmode,thefan
enableandfanspeedrelaysareturnedon.TheEH1outputis
turnedonilrnnediately.Withcontinuingemergencyheatde-
man&EH2willturnonafter5minutes.Fanenableandfan
speedrelaysareturnedoffaftera60-seconddelay.Thecontrol
revertstostandbymode.
OutputEH1,EH2,fanenable,andfanspeedwillbeONif
theGinputisnotactiveduringemergencyheatmode.
COOLINGSTAGE1- In CoolingStage1mode,thefan
enable,compressorandRVrelaysareturnedonilrnnediately.
Ifconfiguredasstage2(DIPswitchsettoOFF)thenthecom-
pressorandfanwillnotturnonuntilthereisastage2demand.
Thefanenableandcompressorrelaysareturnedoffilrnnedi-
atelywhentheCoolingStage1demandisremoved.Thecon-
trolrevertstostandbymode.TheRVrelayremainsonuntil
thereisaheatingdemand.If thereisamaster/slaveordual
compressorapplication,allcompressorrelaysandrelatedfunc-
tionswilltrackwiththeirassociatedDIPswitch2onS1.
COOLINGSTAGE2- In CoolingStage2mode,thefan
enable,compressorandRVrelaysremainon.Thefanspeedre-
layisturnedonhmnediatelyandturnedoffoncetheCooling
Stage2demandisremoved.ThecontrolrevertstoCooling
Stage1mode.Ifthereisamaster/slaveordualcompressorap-
plication,allcompressorrelaysandrelatedfunctionswilltrack
withtheirassociatedDIPswitch2onS1.
NIGHTLOWLIMIT(NLL)STAGEDHEAT1NG-- InNLL
stagedheatingmode,theoverride(OVR)inputbecomes
activeandisrecognizedasacallforheatingandthecontrol
willhmnediatelygointoaHeatingStage1mode.Withan
additional30minutesofNLLdemand,thecontrolwillgointo
HeatingStage2mode.Withanotheradditional30minutesof
NLLdemand,thecontrolwillgointoHeatingStage3mode.
SYSTEM TEST
System testing provides the ability to check the control
operation. The control enters a 20-minute Test mode by mo-
mentarily shorting the test pins. All thne delays are increased
15 times. See Fig. 15.
0 _ _ _c-C-G__ TEST
BR BRG MODE
PINS
C
RJW3 #"--% FP1
g--,,.
Fig. 15 -- Test Mode Pins Location
Test Mode- To enter Test mode on Complete C or
Deluxe D controls, cycle the power 3 thnes within 60 seconds.
The LED (light-emitting diode) will flash a code representing
the last fault when entering the Test mode. The alarm relay will
also power on and off during Test mode. See Tables 10-12. To
exit Test mode, short the terminals for 3 seconds or cycle the
power 3 times within 60 seconds.
NOTE: Deluxe D control has a flashing code and alarm relay
cycling code that will both have the same numerical label.
For example, flashing code 1 will have an alarm relay cycling
code 1. Code 1 indicates the control has not faulted since the
last power off to power on sequence.
Table 10 -- Complete C Control Current LED
Status and Alarm Relay Operations
DESCRIPTION OF
LED STATUS OPERATION
Normal Mode
On
Off
Slow Flash
Fast Flash
Flashing
Code 1
Flashing
Code 2
Flashing
Code 3
Flashing
Code 4
Flashing
Code 5
Flashing
Code 6
Flashing
Code 7
Flashing
Code 8
Flashing
Code 9
Normal Mode with
PM Warning
Control is non-functional
Fault Retry
Over/Under
Voltage Shutdown
Lockout
Test Mode -- No fault
In memory
Test Mode -- HP Fault
In memory
Test Mode -- LP Fault
In memory
Test Mode -- FP1 Fault
In memory
Test Mode -- FP2 Fault
In memory
Test Mode -- CO Fault
In memory
Test Mode -- Over/Under
shutdown in memory
Test Mode -- PM
in memory
Test Mode -- FP1/FP2
swapped fault in memory
LEGEND
CO -- Condensate Overflow
FP -- Freeze Protection
HP -- High Pressure
LED -- Light-Emitting Diode
LP -- Low Pressure
PM -- Performance Monitor
ALARM RELAY
Open
Cycle
(Closed 5 sec.,
Open 25 sec.)
Open
Open
Open
(Closed after
15 minutes)
Closed
Cycling Code 1
Cycling Code 2
Cycling Code 3
Cycling Code 4
Cycling Code 5
Cycling Code 6
Cycling Code 7
Cycling Code 8
Cycling Code 9
NOTES:
1. Slow flash is 1 flash every 2 seconds.
2. Fast flash is 2 flashes every 1 second.
3. EXAMPLE: "Flashing Code 2" is represented by 2 fast flashes followed
by a lO-second pause. This sequence will repeat continually until the
fault is cleared.
Table 11 -- Complete C Control LED Code and
Fault Descriptions
LED FAULT DESCRIPTION
CODE
1 No fault in memory There has been no fault since
the last power-down to power-up
sequence
2 High-Pressure Switch HP Open Instantly
3 Low-Pressure Switch LP open for 30 continuous
seconds before or during a
call (bypassed for first
60 seconds)
4 Freeze Protection FP1 below Temp limit for
Coax -- FP1 30 continuous seconds
(bypassed for first 60 seconds of
operation)
5 Freeze Protection Air FP2 below Temp limit for
Coil -- FP2 30 continuous seconds
(bypassed for first 60 seconds of
operation)
6 Condensate overflow Sense overflow (grounded) for
30 continuous seconds
7 Over/Under Voltage "R" power supply is <19 vac
(Autoreset) Shutdown or >30 vac
8 PM Warning Performance Monitor
Warning has occurred.
9 FPI and FP2 FP1 temperature is higher than
Thermistors are FP2 in heating/test mode, or FP2
swapped temperature is higher than FP1
in cooling/test mode.
LEGEND
FP -- Freeze Protection
HP -- High Pressure
LP -- Low Pressure
2O