50PSH ИНСТРУКЦИЯ По монтажу и эксплуатации

50PSH ИНСТРУКЦИЯ По монтажу и эксплуатации
AQUAZONE™
50PSH, PSV, PSD009-070
Single-Stage Water Source Heat Pumps
with PURON® Refrigerant (R-410A)
50 Hz
Installation, Start-Up, and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . 1,2
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Step 1 — Check Jobsite. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• STORAGE
• PROTECTION
• INSPECT UNIT
Step 3 — Locate Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• FIELD CONVERSION OF DISCHARGE AIR
Step 4 — Mount the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
• HORIZONTAL UNIT
• VERTICAL UNITS
Step 5 — Check Duct System . . . . . . . . . . . . . . . . . . . . . . 8
• SOUND ATTENUATION
• EXISTING DUCT SYSTEM
Step 6 — Install Condensate Drain. . . . . . . . . . . . . . . . . 9
• HORIZONTAL UNIT
• VERTICAL UNITS
• VENTING
Step 7 — Pipe Connections . . . . . . . . . . . . . . . . . . . . . . . 10
• WATER LOOP APPLICATIONS
• GROUND-WATER APPLICATIONS
• GROUND-LOOP APPLICATIONS
• INSTALLATION OF SUPPLY AND RETURN HOSE
KIT
Step 8 — Wire Field Power Supply . . . . . . . . . . . . . . . . 12
• POWER CONNECTION
• SUPPLY VOLTAGE
• 220-VOLT OPERATION
• 380-VOLT OPERATION
Step 9 — Wire Field Controls . . . . . . . . . . . . . . . . . . . . . 13
• THERMOSTAT CONNECTIONS
• WATER FREEZE PROTECTION
• AIR COIL FREEZE PROTECTION
• ACCESSORY CONNECTIONS
• WATER SOLENOID VALVES
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . . . . 20-22
Complete C Control Jumper Settings . . . . . . . . . . . . . 20
Deluxe D Control Jumper Settings . . . . . . . . . . . . . . . . 20
Complete C Control DIP Switches. . . . . . . . . . . . . . . . . 20
Deluxe D Control DIP Switches . . . . . . . . . . . . . . . . . . . 21
Deluxe D Control Accessory
Relay Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PSC (Permanent Split Capacitor) Blower Speed
Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-25
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Scroll Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . 23
Page
Unit Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . . .25
Ground Coupled, Closed Loop and Plateframe
Heat Exchanger Well Systems. . . . . . . . . . . . . . . . . . .25
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25,26
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Units with Aquazone Complete C Control . . . . . . . . .25
Units with Aquazone Deluxe D Control . . . . . . . . . . . .26
COMPLETE C AND DELUXE D BOARD
SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26,27
Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Aquazone Deluxe D Control LED Indicators . . . . . . .27
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-29
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Fan Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . . .28
Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . . .29
Refrigerant Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . . .29
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . 29-34
Control Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Thermostatic Expansion Valves . . . . . . . . . . . . . . . . . . . 30
Moisture Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
50PSH,PSV,PSD 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 components. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions such as cleaning coils and filters and replacing filters. All
other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to the unit,
and other safety precautions that may apply.
Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock or
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500074-01
Printed in U.S.A.
Form 50PS-C1SI
Pg 1
10-10
Replaces: New
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or a local
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 individual 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.
WARNING 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.
Recognize safety information. This is the safety-alert
symbol ( ). When this symbol is displayed on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
GENERAL
This installation and start-up instructions literature is for
Aquazone™ single-stage water source heat pump systems.
Water source heat pumps (WSHPs) are single-package horizontally and vertically mounted units with electronic controls
designed for year-round cooling and heating. Aquazone
WSHPs are available in the following unit configurations:
• 50PSH unit with horizontal airflow and right, left or back
discharge
• 50PSV unit with vertical airflow and top discharge
• 50PSD unit with vertical airflow and bottom discharge
(downflow)
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 responsibility of the installing contractor to determine and comply
with ALL applicable codes and regulations.
INSTALLATION
Step 1 — Check Jobsite — Installation, 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.
WARNING
Electrical shock can cause personal injury 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.
IMPORTANT: This equipment is designed for indoor
installation ONLY. Extreme variations in temperature,
humidity and corrosive water or air will adversely affect
the unit performance, reliability and service life.
Table 1 — Physical Data — 50PSH, PSV, PSD018-070 Units
50PS UNIT SIZE
009*
012*
018
024
030
036
042
048
060
070
COMPRESSOR (1 Each)
Rotary
Scroll
FACTORY CHARGE R-410A (kg)
0.88
0.96
1.13
1.59
1.64
1.98
2.27
2.27
3.86
4.08
PSC FAN MOTOR AND BLOWER
(3 Speeds)
Fan Motor (kW)
37
93
124
149
249
373
373
560
746
746
High Static Fan Motor (kW)
N/A
N/A
149
249
373
373
560
560
746
N/A
Blower Wheel Size (D x W) (mm)
152 x 127 152 x 127 229 x 178 229 x 178 229 x 178 254 x 254 254 x 254 254 x 254 279 x 254 279 x 254
Heat Exchanger Water Volume (L)
2.1
2.1
2.1
2.9
2.9
3.5
4.7
4.7
5.9
5.9
COAX VOLUME (L)
1.10
1.70
2.12
2.88
2.88
3.48
4.69
4.69
5.91
5.91
1/
3/
3/
3/
3/
1/
WATER CONNECTION SIZE, FPT (in.)
1
1
1
1
2
2
4
4
4
4
1
1
1/
1/
1/
1/
1/
1
/2
/2
/2
HWG CONNECTION SIZE, FPT (in.)
N/A
N/A
2
2
2
2
2
50PSD,PSV UNITS
Air Coil Dimensions (H x W) (mm)
406x406 406x406 610x508 711x508 711x508 711x635 813x635 813x635 914x635 914x635
Throwaway Filter, Standard
1...
1...
25 mm, Qty...Size (mm)
1...
1...
1...
1...
1...
1...
2...
2...
406x762; 406x762;
406x508 406x508 610x610 711x610 711x610 711x762 406x762 406x762
1...
1...
508x762 508x762
Weight
Operating (kg)
66
68
114
121
122
148
188
189
200
201
Packaged (kg)
71
73
119
125
126
153
192
193
205
206
50PSH UNITS
Air Coil Dimensions (H x W) (mm)
406x406 406x406 457x686 457x787 457x787 508x889 508x1016 508x1016 508x1143 508x1143
Throwaway Filter, Standard
1...
1...
1...
25 mm, Qty...Size (mm)
1...
1...
2...
2...
2...
305x508; 457x508; 457x508;
2...
2...
406x508 406x508 457x457 457x457 457x457
1...
1...
1...
508x610 508x610
508x635 508x610 508x610
Weight
Operating (kg)
71
73
117
121
122
148
188
189
200
201
Packaged (kg)
72
77
121
125
126
153
192
193
205
206
FPT
HWG
PSC
TXV
—
—
—
—
LEGEND
Female Pipe Thread
Hot Water Generator
Permanent Split Capacitor
Thermostatic Expansion Valve
*Unit sizes 009-012 not available on 50PSD unit.
NOTE: All units have spring compressor mountings, TXV expansion
devices, and 1/2-in. (13 mm) and 3/4-in. (19 mm) electrical knockouts.
2
clean, dry area of the building or in a warehouse. Units must be
stored in an upright position at all times. If carton stacking is
necessary, stack units a maximum of 3 high. Do not remove
any equipment from its shipping package until it is needed for
installation.
PROTECTION — Once the units are properly positioned on
the jobsite, cover them with either a shipping carton, vinyl film,
or an equivalent protective covering. Cap open ends of pipes
stored on the jobsite. This precaution is especially important in
areas where painting, plastering, or spraying of fireproof material, etc. is not yet complete. Foreign material that accumulates
within the units can prevent 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.
HORIZONTAL UNIT (50PSH) — Horizontal units are designed for indoor installation only. Be sure to allow adequate space
around the unit for servicing. Refer to Fig. 1 for an illustration of
a typical horizontal installation. See Fig. 2 for overall unit
dimensions.
VERTICAL AND DOWNFLOW UNITS (50PSV, PSD) —
Vertical units are designed for indoor installations. While vertical units are typically installed in a floor-level closet or a small
mechanical room, the unit access guidelines for these units are
very similar to those described for horizontal units. See Fig. 3
and 4 for overall dimensions. Refer to Fig. 5 for an example of
a typical vertical installation. Refer to Fig. 6 for a sample
downflow installation.
CAUTION
To avoid equipment damage, do not use these units as a
source of heating or cooling during the construction process. The mechanical components and filters used in these
units quickly becomes clogged with construction dirt and
debris which may cause system damage.
CAUTION
DO NOT store or install units in corrosive environments 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.
Step 2 — Check 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 carton 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.
INSPECT UNIT — To prepare the unit for installation, complete 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. Do not remove the packaging until the unit is ready for
installation.
3. Verify that the unit’s refrigerant tubing is free of kinks or
dents, and that it does not touch other unit components.
4. Inspect all electrical connections. Be sure connections are
clean and tight at their terminations.
5. Loosen compressor bolts until the compressor rides freely
on springs. Remove shipping restraints.
6. Remove the four 6 mm shipping bolts from compressor
support plate (two bolts on each side) to maximize vibration and sound alternation.
NOTE: It is the responsibility of the purchaser to file all
necessary claims with the shipping company.
1. Be sure that the location chosen for unit installation provides ambient temperatures maintained above freezing.
Well water applications are especially susceptible to
freezing.
2. 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.
3. Check local codes to be sure a secondary drain pan is not
required under the unit.
4. Be sure unit is mounted at a height sufficient to provide
an adequate slope of the condensate lines. If an appropriate slope cannot be achieved, a field-supplied condensate
pump may be required.
5. Provide sufficient space for duct connection. Do not allow the weight of the ductwork to rest on the unit.
6. Provide adequate clearance for filter replacement and
drain pan cleaning. Do not allow piping, conduit, etc. to
block filter access.
7. Provide sufficient access to allow maintenance and
servicing of the fan and fan motor, compressor and coils.
Removal of the entire unit from the closet should not be
necessary.
8. Provide an unobstructed path to the unit within the closet
or mechanical room. Space should be sufficient to allow
removal of unit if necessary.
9. Provide ready access to water valves and fittings, and
screwdriver access to unit side panels, discharge collar,
and all electrical connections.
10. 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 immediately at
the jobsite, it should be left in its shipping carton and stored in a
CAUTION
Failure to remove shipping brackets from spring-mounted
compressors will cause excessive noise and could cause
component failure due to added vibration.
7. Remove any blower support cardboard from inlet of the
blower.
8. Locate and verify any accessory kit located in compressor
and/or blower section.
9. 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 a WSHP:
• Units are for indoor use only.
• Locate in areas where ambient temperatures are between
4.4 C and 37.8 C and relative humidity is no greater than
75%.
• Provide sufficient space for water, electrical and duct
connections.
• Locate unit in an area that allows easy access and removal
of filter and access panels.
3
• Provide access to water valves and fittings and screwdriver access to the unit side panels, discharge collar and
all electrical connections.
NOTE: Correct placement of the horizontal unit can play an
important part in minimizing sound problems. Since ductwork
is normally applied to these units, the unit can be placed so that
the principal sound emission is outside the occupied space in
sound-critical applications. A fire damper may be required by
the local code if a fire wall is penetrated.
FIELD CONVERSION OF DISCHARGE AIR — The discharge air of the 50PSH horizontal units can be converted
between side and back discharge in the field. The conversion
process is the same for right and left return configurations. See
Fig. 7 and 8.
NOTE: It is not possible to convert return air between left or
right return models in the field due to refrigerant piping
changes.
Preparation — The unit should be on the ground in a well lit
area. Hung units should be taken down to ground level before
converting.
• Allow enough space for service personnel to perform
maintenance.
• Return air must be able to freely enter the space if unit needs
to be installed in a confined area such as a closet.
• Install the unit on a piece of rubber, neoprene or other
mounting pad material for sound isolation. The pad
should be at least 10 to 13 mm in thickness. Extend the
pad beyond all four edges of the unit.
• Provide adequate clearance for filter replacement and
drain pan cleaning. Do not block filter access with piping, conduit or other materials. Refer to Fig. 1-6 for
dimensional data and typical installation.
• Provide access for fan and fan motor maintenance and
for servicing the compressor and coils without removing
the unit.
• Provide an unobstructed path to the unit within the closet
or mechanical room. Space should be sufficient to allow
removal of the unit, if necessary.
• In limited side access installations, pre-removal of the
control box side mounting screws will allow control box
removal for future servicing.
3/8” threaded rods
(by others)
Filter Access
Return Air
(Ductwork
not shown)
Field-supplied transition to
minimize pressure loss
Thermostat
Wiring
Power Wiring
Stainless steel
braid hose
with integral
“J” swivel
Supply Air
Balancing Valve (fieldinstalled accessory)
Low Pressure Drop Water
Control Valve (optional)
(field-installed accessory)
Unit Power
Insulated supply duct with
at least one 90 degree elbow
to reduce air noise
(field-supplied)
Building
Loop
Flexible
Connection
Unit Power
Disconnect
(by others)
Field-Supplied
Electric Heat
(if applicable)
Aux Electric
Heat Disconnect
Water Out
Water In
Unit Hanger
(factorysupplied)
(field-installed
accessory)
Ball Valve with optional
integral P/Tplug (typical for supply
and return piping) (field-installed accessory)
3/8” Threaded
Rod (by others)
Vibration Isolator
(white-compressor end
and red-blower end)
Washer
(by others)
Double Hex Nuts
(by others)
Integral hanger supportpre-attached in factory
A50-7728
UNIT HANGER ISOLATION DETAIL
Fig. 1 — Typical Installation — 50PSH Unit
4
50PSH
UNIT
SIZE
ELECTRICAL
KNOCKOUTS
(cm)
WATER CONNECTIONS
(cm)
OVERALL
CABINET
(cm)
J
K
L
Loop
22.2 mm 22.2 mm 22.2 mm M
Water HWG
FPT
F
G
H
FPT (in.)
A
B
C
D
E
Low
Ext
Power
HWG
Con(in.)
Width Depth Height In Out HWG
Voltage Pump Supply
In
Out densate
1/
009,012 56.8 107.8 43.1 9.3 24.2 N/A
N/A
2.0
N/A
9.4
15.9
21.9
13.4
2
1/
3/
018
56.8 158.0 48.9 5.2 25.4 35.2 42.9
1.5
9.2
15.6
21.9
9.3
4
2
1/
3/
024,030 56.8 158.0 48.9 5.2 25.4 35.2 42.9
1.5
9.2
15.6
21.9
9.3
4
2
1/
3/
036
64.5 180.8 54.0 8.6 27.5 39.7 47.9
1.5
9.2
15.6
21.9
8.0
4
2
1/
042,048 64.5 193.5 54.0 8.6 27.5 39.7 47.9
1.5
1
9.2
15.6
21.9
8.0
2
1/
060,070 64.5 206.2 54.0 8.6 27.5 39.7 47.9
1.5
1
9.2
15.6
21.9
8.0
2
1
2
3
4
5
N
O
P
Supply Supply
Height Width
10.3
5.1
5.1
3.1
3.1
3.1
22.5
39.4
39.4
48.3
48.3
48.3
NOTES:
1. Shaded areas are recommmended service areas. Installer should take care to comply with all building codes
and allow adequate clearance for future field service.
2. Units are shipped with an air filter supported by a set of filter rails. These rails are not suitable for supporting
ductwork. If a return air duct is to be connected to the unit, these rails should be removed and replaced with
the field-mounted 2-in. full filter frame with door (AFF Series accessory filter frame) or some other air filter
support system.
3. Discharge flange and hanger brackets are factory installed.
4. Condensate is 3/4-in. FPT.
5. Blower service panel requires 2-ft. service access.
6. Blower service access is through back panel on straight discharge units or through panel opposite air coil on
back discharge units.
61cm Service
Access
CSP
Front
22.5
31.8
31.8
44.5
44.5
44.5
ASP
BSP
CAP
CSP
FPT
HWG
LH
RH
a50-8231
LEFT RETURN
Power Supply
28.6mm Knockout
42.8
71.4
85.8
101.0
101.0
113.7
Straight
Discharge
5
5.3
5.8
5.8
7.8
7.8
7.8
2.5
3.9
3.9
3.9
3.9
3.9
LEGEND
Alternate Service Panel
Blower Service Panel
Control Access Panel
Compressor Service Panel
Female Pipe Thread
Hot Water Generator
Left Hand
Right Hand
61cm optional
service access
CSP
3
L
CAP
J
G
H
F
2
1
D
H
E
Straight
Discharge
5
A
Front-View
Condensate
3 / 4” FPT
Back
Discharge
X
Y
Z
cm
109.5
157.7
180.6
193.3
206.0
cm
62.2
62.2
69.9
69.9
69.9
cm
51.5
51.5
59.1
59.1
59.1
Front
Model
Y
C
009-012
018-030
036
042-048
060-070
Z
C
Air Coil Side
Unit Hanger Detail
Air Coil Side
V
82.6mm
Condensate
Back
Discharge 3/4” FPT
Note: Choose either
back or straight discharge
38.1
41.0
41.0
46.1
46.1
46.1
U
4
K
O
10.3
5.2
5.2
2.6
2.6
2.6
Right Return
40.6mm
40.6mm
Low Voltage
22.2mm
Knockout
Blower
Outlet
13.4
9.2
9.2
8.0
8.0
8.0
S
T
Return Return
Depth Height
RIGHT RETURN
22.2mm
Knockout
82.6mm
BSP
R
Front 61cm Service
Access
ASP
P
—
—
—
—
—
—
—
—
Q
61cm Optional
Service Access
Left Return
Q
RETURN
CONNECTION (cm)
USING RETURN
AIR OPENING
DISCHARGE CONNECTION (cm)
DUCT FLANGE INSTALLED
(±2.5 mm)
Note: Choose either
back or straight discharge
P
R
Blower
Outlet
O
BSP
Q
R
A
A
X
Right Return Back Discharge
Left Return Back Discharge
P
M
N
Blower
Outlet
ASP
O
BSP
P
BSP
Blower
Outlet
CSP
O
N
Front
Front
Right Return Straight Discharge
M
Left Return Straight Discharge
2.8cm
V
U
S
Air Coil
S
Air Coil
CSP
C T
C
Front
ASP
T
Front
B
Left Return Left View Air Coil Opening
B
Right Return Right View Air Coil Opening
Fig. 2 — 50PSH Dimensional Data
5
V
U
50PSV
UNIT
SIZE
009,012
018
024,030
036
042,048
060,070
ELECTRICAL
KNOCKOUTS
(cm)
WATER CONNECTIONS
(cm)
OVERALL
CABINET
(cm)
1
2
3
4
5
F
G
A
B
C
D
E
HWG
Width Depth Height In Out HWG
In
Out
56.8
54.9
87.6 9.4 24.6 N/A
N/A
56.8
65.1
113.3 5.2 25.4 35.2 42.9
56.8
65.1
123.2 5.2 25.4 35.2 42.9
64.5
77.8
128.3 8.6 27.5 39.7 47.9
64.5
77.8
138.4 8.6 27.5 39.7 47.9
64.5
77.8
148.6 8.6 27.5 39.7 47.9
H
Condensate
18.7
19.8
19.8
19.8
19.8
19.8
J
K
L
Loop
22.2 mm 22.2 mm 22.2 mm
Water HWG
FPT FPT
Low
Ext
Power
(in.)
(in.)
Voltage
Pump
Supply
1/
2
3/
4
3/
4
3/
4
N/A
1/
2
1/
2
1/
2
1/
2
1/
2
1
1
9.5
9.2
9.2
9.2
9.2
9.2
15.9
15.6
15.6
15.6
15.6
15.6
RETURN
CONNECTION (cm)
USING RETURN
AIR OPENING
DISCHARGE CONNECTION (cm)
DUCT FLANGE INSTALLED
(±2.5 mm)
22.2
21.9
21.9
21.9
21.9
21.9
M
N
17.0
18.3
18.3
16.1
16.1
16.1
16.0
14.8
14.8
16.0
16.0
16.0
O
P
Supply Supply
Height Width
NOTES:
1. Shaded areas are recommmended service areas. Installer should take care to comply with all building codes
and allow adequate clearance for future field service.
2. Front and side access is preferred for service access. However, all components may be serviced from the front
access panel if side access is not available.
3. Discharge flange is field installed.
4. Condensate is 3/4-in. FPT PVC and is switchable from front to side.
5. Units are shipped with an air filter supported by a set of filter rails. These rails are not suitable for supporting
ductwork. If a return air duct is to be connected to the unit, these rails should be removed and replaced with
the field-mounted 2-in. full filter frame with door (AFF Series accessory filter frame) or some other air filter
support system.
22.9
35.6
35.6
45.7
45.7
45.7
22.9
35.6
35.6
45.7
45.7
45.7
ASP
BSP
CAP
CSP
FPT
HWG
HV
LH
LV
RH
—
—
—
—
—
—
—
—
—
—
Q
R
S
Return
Depth
T
Return
Height
U
17.0
12.4
12.4
13.5
13.5
13.5
5.7
5.6
5.6
5.6
5.6
5.6
43.3
53.6
53.6
66.3
66.3
66.3
38.7
58.9
69.1
69.1
79.2
89.4
2.5
2.5
2.5
2.5
2.5
2.5
LEGEND
Alternate Service Panel
Blower Service Panel
Control Access Panel
Compressor Service Panel
Female Pipe Thread
Hot Water Generator
High Voltage
Left Hand
Low Voltage
Right Hand
Field Installed
Discharge Flange
Access Panels
Filter Rails
Air Coil
N
ASP
P
BSP
Front
O
N
Front
P
B
O
A
ASP*
CSP
Q
Air Coil Side
Top View-Right Return
Top View-Left Return
S
R
R
U
CAP
M
Air Coil Side
61cm
Optional
Service
Access
Left Rtn
a50-8183
S
(right
Opposite)
Isometric (Left Return)
View
61cm
Service
25.4 mm
U
Air Coil
Air Coil
T
T
42.7 mm
C
C
Condensate
3/4" FPT
Power Supply
28.6mm
HV Knockout
30.0 mm
ASP*
41.4 mm
22.2mm
Knockout
Low Voltage
22.2mm
LV Knockout
CSP
Back
Right Return Right View
- Air Coil Opening
Back
Front
Left Return Left View
- Air Coil Opening
Fig. 3 — 50PSV Dimensional Data
6
4
3
2
CSP
Front
CAP
J K
L
F
5
1
D
H
G
E
Front-View
* ASP service access is recommended with some factory options.
50PSD
UNIT
SIZE
1
A
B
C
Width Depth Height
018
024,030
036
042,048
060,070
56.8
56.8
64.5
64.5
64.5
65.1
65.1
77.8
77.8
77.8
ELECTRICAL
KNOCKOUTS
(cm)
WATER CONNECTIONS
(cm)
OVERALL
CABINET
(cm)
122.9
133.4
138.4
148.6
158.8
D
In
43.7
45.5
45.5
45.5
45.5
2
3
4
F
G
E
HWG
Out HWG
In
Out
23.6 13.7 6.1
26.7 14.5 6.1
26.7 14.5 6.1
26.7 14.5 6.1
26.7 14.5 6.1
5
H
Condensate
J
K
L
Loop
22.2 mm 22.2 mm 22.2 mm
Water HWG
FPT FPT
Low
Ext
Power
(in.)
(in.)
Voltage
Pump
Supply
9.2
9.2
9.2
9.2
9.2
3/
4
1/
2
3/
4
1/
2
3/
4
1/
2
1
1
1/
2
1/
2
9.2
9.2
9.2
9.2
9.2
15.6
15.6
15.6
15.6
15.6
RETURN
CONNECTION (cm)
USING RETURN
AIR OPENING
DISCHARGE CONNECTION (cm)
DUCT FLANGE INSTALLED
(±2.5 mm)
21.9
21.9
21.9
21.9
21.9
M
N
17.1
17.1
18.3
18.3
18.3
21.4
21.4
22.9
22.9
22.9
O
P
Supply Supply
Height Width
25.7
25.7
34.0
34.0
34.0
NOTES:
1. Shaded areas are recommmended service areas. Installer should take care to comply with all building codes
and allow adequate clearance for future field service.
2. Front and side access is preferred for service access. However, all components may be serviced from the front
access panel if side access is not available.
3. Condensate is 3/4-in. FPT PVC and is switchable from front to side.
4. Units are shipped with an air filter supported by a set of filter rails. These rails are not suitable for supporting
ductwork. If a return air duct is to be connected to the unit, these rails should be removed and replaced with
the field-mounted 2-in. full filter frame with door (AFF Series accessory filter frame) or some other air filter
support system.
23.0
23.0
32.7
32.7
32.7
ASP
BSP
CAP
CSP
FPT
HWG
HV
LH
LV
RH
Q
R
S
Return
Depth
T
Return
Height
U
27.4
27.4
26.5
26.5
26.5
5.6
5.6
5.6
5.6
5.6
53.6
53.6
66.3
66.3
66.3
58.9
69.1
69.1
79.2
89.4
53.9
53.9
59.0
59.0
59.0
LEGEND
Alternate Service Panel
Blower Service Panel
Control Access Panel
Compressor Service Panel
Female Pipe Thread
Hot Water Generator
High Voltage
Left Hand
Low Voltage
Right Hand
—
—
—
—
—
—
—
—
—
—
Filter Rail
a50-7846ef
CSP
ASP*
CAP
P
N
N
ASP
P
O
Blower
Opening
O
A
Front
A
Blower
Opening
61cm Optional Service
Access Right Rtn
BSP
(left opposite)
Front
Condensate 3/4”
Q
FPT
M
Air Coil Side
Air Coil Side
61cm Service
Access
B
B
Isometric View
(Right Return)
Left Return Discharge
Floor Foot Print
Right Return Discharge
Floor Foot Print
Power Supply
28.6mm
HV Knockout
27.9mm
ASP*
U
22.2mm
Knockout
L
Low Voltage
22.2mm
LV Knockout
CSP
U
40.6mm
K
40.6mm
4
J
CAP
CSP
Air Coil
T
E
2
BSP
Condensate
3 / 4” FPTRight Return
T
F
1
Air Coil
C
3
G
Condensate
3 / 4” FPT Left Return
Front
Back Back
S
R
Right Return Right View
- Air Coil Opening
Front
R
5
5
H
Front-View
S
Left Return Left View
- Air Coil Opening
Fig. 4 — 50PSD Dimensional Data
7
* ASP service access is recommended
with some factory options.
D
Step 4 — Mount the Unit
Supply Air
Flexible
Connection
Return
Air
HORIZONTAL UNIT (50PSH) — Horizontal units should
be mounted using the factory-installed hangers. Proper attachment of hanging rods to building structure is critical for safety.
See Fig. 1. Rod attachments must be able to support the weight
of the unit. See Table 1 for unit operating weights.
VERTICAL UNITS (50PSV, PSD) — Vertical and downflow
units are available in left or right return air configurations. See
Fig. 3 and 4. Mount the unit (except 50PSD) on a vibration
absorption pad at least 10 mm larger than the entire base to
minimize vibration transmission. It is not necessary to mount
the unit on the floor. See Fig. 9.
NOTE: Some codes require the use of a secondary drain pan
under vertical units. Check local codes for more information.
Building
Loop
Water
Out
Water
In
Stainless steel
braid hose
with integral
“J” swivel
(field-installed
accessory)
Power
Thermostat
Wiring
Balancing Valve
(field-installed
accessory)
Low Pressure
Drop Water
Control Valve
(optional)
(field-installed
accessory)
Step 5 — Check Duct System — Size the duct sysCompressor
Access Panel
A50-7730
tem to handle the design airflow quietly.
NOTE: Depending on the unit, the fan wheel may have a shipping support installed at the factory. This must be removed
before operating unit.
SOUND ATTENUATION — To eliminate the transfer of
vibration to the duct system, a flexible connector is recommended for both discharge and return air duct connections on
metal duct systems. The supply and return plenums should
include internal duct liner of fiberglass or be made of duct
board construction to maximize sound attenuation of the
blower. Installing the WSHP unit to uninsulated ductwork in
an unconditioned space is not recommended since it will sweat
and adversely affect the unit’s performance.
Ball Valve with optional
integral P/T plug
(typical for supply and
return piping) (field-Installed
accessory)
NOTE: Ball valve with integral pressure temperature plug recommended.
Fig. 5 — Typical Vertical Installation — 50PSV Unit
Flexible
Connection
Return
Air
Power
Thermostat
Wiring
Compressor
Access Panel
A50-7729
Building
Loop
Water
Out
Stainless
steel
braid hose
with
integral ”J”
swivel(fieldinstalled
accessory)
Water
In
Water
Connection End
Balancing Valve
(field-installed
accessory)
Low Pressure
Drop Water
Control Valve
(optional)
(field-installed
accessory)
Remove Screws
Return Air
Ball Valve with
optional integral
Flexible
P/T plug (typical for
Connection
supply and return
piping)(field-installed
Supply Air
accessory)
Side Discharge
Water
Connection End
NOTE: Ball valve with integral pressure temperature plug recommended.
Rotate
Return Air
Fig. 6 — Typical Downflow Installation —
50PSD Unit
Side to Back Discharge Conversion
1. Remove screws to free the top and discharge panels. Set
screws aside for later use. See Fig. 7 and 8.
2. Remove the access panel and set aside.
3. Lift the discharge panel from side of unit and rotate it to
back using care not to damage blower wiring.
4. Check blower wire routing and connections for undue
tension or contact with sheet metal edges. Re-route if
necessary.
5. Check refrigerant tubing for contact with other components. Adjust if necessary.
6. Reinstall top panel using screws set aside in Step 1.
NOTE: Location for some screws at bottom of discharge
panel may have to be changed.
7. Manually spin fan wheel to check for obstructions.
Adjust for any obstruction found.
8. Replace access panel.
Back to Side Discharge Conversion — Follow instructions
above for Side to Back Discharge Conversion, noting the
panels would be reversed.
Move to Side
Water
Connection End
Replace Screws
Return Air
Drain
A50-6256
Back Discharge
Discharge Air
Fig. 7 — Conversion Left Return,
Side Discharge to Back Discharge
8
Step 6 — Install Condensate Drain
Water
Connection End
HORIZONTAL UNIT (50PSH) — Slope the unit toward the
drain at 5 mm over the length of the unit. See Fig. 10. If it is not
possible to meet the required pitch, install a condensate at the
unit to pump condensate to building drain.
Horizontal units are not internally trapped, therefore an external trap is necessary. Install each unit with its own individual
trap and means to flush or blow out the condensate drain line.
Do not install units with a common trap or vent. See Fig. 11 for
typical condensate connections.
NOTE: Never use a pipe size smaller than the connection.
VERTICAL UNITS (50PSV, PSD) — Each unit uses a condensate hose inside all cabinets as a trapping loop, therefore an
external trap is not necessary. See Fig. 12.
Each unit must be installed with its own individual vent and
means to flush or blow out the condensate drain line. Do not install units with a common trap or vent.
VENTING — Install a vent in the condensate line of any
application that may allow dirt or air to collect in the line. Consider the following:
• Always install a vent where an application requires a long
horizontal run.
• Always install a vent where large units are working against
higher external static pressure and to allow proper drainage
for multiple units connected to the same condensate main.
Return Air
Supply
Duct
Side Discharge
Water
Connection End
Return Air
Drain
Discharge Air
Back Discharge
A50-6257
Fig. 8 — Conversion Right Return,
Side Discharge to Back Discharge
1/4” Pitch for
Drainage
A50-7731ef
Pitch Toward
Drain
Fig. 9 — 50PSV Units Mounted With
Vibration Absorption Pad
A50-6260
Drain Connection
Fig. 10 — Horizontal Unit Pitch
To reduce air noise, at least one 90-degree elbow could be
included in the supply and return air ducts, provided system
performance is not adversely impacted. The blower speed can
also be changed in the field to reduce air noise or excessive airflow, provided system performance is not adversely impacted.
EXISTING DUCT SYSTEM — If the unit is connected to
existing ductwork, consider the following:
• Verify that the existing ducts have the proper capacity to
handle the unit airflow. If the ductwork is too small, install
larger ductwork.
• Check existing ductwork for leaks and repair as necessary.
NOTE: Local codes may require ventilation air to enter the
space for proper indoor air quality. Hard-duct ventilation
may be required for the ventilating air supply. If hard
ducted ventilation is not required, be sure that a proper air
path is provided for ventilation air to unit to meet ventilation requirement of the space.
A50-7732
NOTE: Trap should be deep enough to offset maximum unit static
difference. A 4-in. trap is recommended.
Fig. 11 — Trap Condensate Drain Connection
9
3/4” Copper FPT/PVC
• Use backup wrench. Do not overtighten connections.
• Route piping to avoid service access areas to unit.
• Flush the piping system prior to operation to remove dirt
and foreign materials from the system.
GROUND-WATER APPLICATIONS — Typical groundwater piping is shown in Fig. 13. 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.
• Connect boiler drains and other valves 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.
Water Supply and Quantity — Check water supply. Water
supply should be plentiful and of good quality. See Table 2 for
water quality guidelines.
3/4” PVC
Vent
1/2”
1/4” per foot
slope to drain
1/2”
Water
Connections
Alternate
Condensate
Location
A50-6262
NOTE: Unit does not need to be sloped toward drain.
Fig. 12 — Vertical Condensate Connection
• Be sure to support the line where anticipated sagging from
the condensate or when “double trapping” may occur.
• If condensate pump is present on unit, be sure drain connections have a check valve to prevent back flow of condensate
into other units.
IMPORTANT: Failure to comply with the above required
water quality and quantity limitations and the closedsystem application design requirements may cause damage
to the tube-in-tube heat exchanger. This damage is not the
responsibility of the manufacturer.
Step 7 — Pipe Connections — Depending on the
application, there are 3 types of WSHP piping systems to
choose from: water loop, ground-water and ground loop. Refer
to Piping Section of Carrier System Design Manual for additional information.
All WSHP units use 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. Refer to Table 1 for
connection sizes. When making piping connections, consider
the following:
• Use a backup wrench when making screw connections to
unit to prevent internal damage to piping.
• Insulation may be required on piping to avoid condensation
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.
WATER LOOP APPLICATIONS — Water loop applications
usually include a number of units plumbed to a common 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 1.6 and 3.2 L/m per kW
of cooling capacity. For proper maintenance and servicing,
pressure-temperature (P/T) ports are necessary for temperature
and flow verification.
Cooling tower/boiler systems typically utilize a common
loop maintained at 15.5 to 35.0 C. The use of a closed circuit
evaporative cooling tower with a secondary heat exchange between the tower and the water loop is recommended. If an open
type cooling tower is used continuously, chemical treatment
and filtering will be necessary.
In addition to complying with any applicable codes, consider the following for system piping:
• Piping systems using water temperatures below 10 C
require 13 mm closed cell insulation on all piping surfaces
to eliminate condensation.
• Avoid all plastic to metal threaded fittings 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.
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 firm,
independent testing facility, or local water authority for specific
recommendations to maintain water quality within the published limits.
GROUND-LOOP APPLICATIONS — Temperatures between –3.9 and 43.3 C and a cooling capacity of 1.6 to 3.2 L/m
of flow per kW is recommended. In addition to complying with
any applicable codes, consider the following for system piping:
• Limit piping materials to only polyethylene fusion in the
buried sections of the loop.
• Do not use galvanized or steel fittings at any time due to
corrosion.
• Avoid all plastic to metal threaded fittings due to the potential to leak. Use a flange fitted substitute.
• Do not overtighten connections.
• Route piping to avoid service access areas to unit.
• Use pressure-temperature (P/T) plugs to measure flow of
pressure drop.
INSTALLATION OF SUPPLY AND RETURN HOSE
KIT — Follow these piping guidelines.
1. Install a drain valve at the base of each supply and return
riser to facilitate system flushing.
2. Install shutoff/balancing valves and unions at each unit to
permit unit removal for servicing.
3. Place strainers at the inlet of each system circulating
pump.
4. Select the proper hose length to allow slack between connection points. Hoses may vary in length by +2% to –4%
under pressure.
5. Refer to Table 3. Do not exceed the minimum bend radius
for the hose selected. Exceeding the minimum bend radius may cause the hose to collapse, which reduces water
flow rate. Install an angle adapter to avoid sharp bends
in the hose when the radius falls below the required
minimum.
NOTE: Piping must comply with all applicable codes.
10
Table 2 — Water Quality Guidelines
HX
CLOSED
OPEN LOOP AND RECIRCULATING WELL**
MATERIAL*
RECIRCULATING†
Scaling Potential — Primary Measurement
Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below.
pH/Calcium
All
N/A
pH < 7.5 and Ca Hardness, <100 ppm
Hardness Method
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.
Ryznar Stability Index
6.0 - 7.5
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)
All
N/A
(Bacterial Iron Potential)
If Fe2+ (ferrous) >0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.
Iron Fouling
<0.5 ppm of Oxygen
All
N/A
Above this level deposition will occur.
Corrosion Prevention††
pH
6 - 8.5
6 - 8.5
All
Monitor/treat as needed.
Minimize steel pipe below 7 and no open tanks with pH <8.
Hydrogen Sulfide (H2S)
<0.5 ppm
At H2S>0.2 ppm, avoid use of copper and cupronickel piping of HXs.
All
N/A
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 Hydroxide,
<0.5 ppm
Chloride, Nitrate and Sulfate
All
N/A
Compounds
Maximum Chloride Levels
Maximum allowable at maximum water temperature.
50 F (10 C)
75 F (24 C)
100 F (38 C)
Copper
N/A
<20 ppm
NR
NR
Cupronickel
N/A
<150 ppm
NR
NR
304 SS
N/A
<400 ppm
<250 ppm
<150 ppm
316 SS
N/A
<1000 ppm
<550 ppm
<375 ppm
Titanium
N/A
>1000 ppm
>550 ppm
>375 ppm
Erosion and Clogging
Particulate Size and Erosion
<10 ppm of particles and a <10 ppm (<1 ppm “sandfree” for reinjection) of particles and a maximum
maximum velocity of 6 fps. velocity of 6 fps. Filtered for maximum 800 micron size. Any particulate that
All
Filtered for maximum
is not removed can potentially clog components.
800 micron size.
Brackish
Use cupronickel heat exchanger when concentrations of calcium or sodium
All
N/A
chloride are greater than 125 ppm are present. (Seawater is approximately
25,000 ppm.)
CONDITION
LEGEND
HWG — Hot Water Generator
HX — Heat Exchanger
N/A — Design Limits Not Applicable Considering Recirculating
Potable Water
NR — Application Not Recommended
SS
— Stainless Steel
††If 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, requiring 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/l is
equivalent to ppm.
*Heat exchanger materials considered are copper, cupronickel, 304 SS
(stainless steel), 316 SS, titanium.
†Closed recirculating system is identified by a closed pressurized piping
system.
**Recirculating open wells should observe the open recirculating design
considerations.
Pipe joint compound is not necessary when Teflon threaded
tape is pre-applied to hose assemblies or when flared-end
connections are used. If pipe joint compound is preferred, use
compound only in small amounts on the male pipe threads of
the fitting adapters. Prevent sealant from reaching the flared
surfaces of the joint.
NOTE: When anti-freeze is used in the loop, assure that it is
compatible with Teflon* tape or pipe joint compound
employed.
Maximum allowable torque for brass fittings is 40.7 Nm. If
a torque wrench is not available, tighten finger-tight plus one
quarter turn. Tighten steel fittings as necessary.
Table 3 — Metal Hose Minimum Bend Radii
HOSE DIAMETER (mm)
13
19
25
MINIMUM BEND RADII (mm)
64
102
140
Insulation is not required on loop water piping except where
the piping runs through unheated areas or outside the building
or when the loop water temperature is below the minimum expected dew point of the pipe ambient. Insulation is required if
loop water temperature drops below the dew point.
IMPORTANT: Do not bend or kink supply lines or hoses.
*Teflon is a registered trademark of DuPont.
11
Water
Control
Valve
(field-installed
accessory)
Flow
Regulator
(field-installed
accessory)
Pressure
Tank
Water Out
Water In
From Pump
Shut-Off
Valve (field-installed accessory)
Boiler
Drains
(field-installed)
Strainer (field-installed accessory)
(16 to 20 mesh recommended for
filter sediment)
A50-7733
Fig. 13 — Typical Ground-Water Piping Installation
All field-installed wiring, including the electrical ground,
MUST comply with the National Electrical Code (NEC,
U.S.A.) as well as applicable local codes. In addition, all field
wiring must conform to the Class II temperature limitations described in the NEC.
Refer to unit wiring diagrams Fig. 15-19 for a schematic of
the field connections, which must be made by the installing (or
electrical) contractor. Refer to Table 4 for fuse sizes.
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.
Operating voltage must be the same voltage and phase as
shown in electrical data shown in Table 4.
Make all final electrical connections with a length of flexible conduit to minimize vibration and sound transmission to
the building.
POWER CONNECTION — Make line voltage connection
by connecting the incoming line voltage wires to the line
side of the compressor contactor terminal as shown in
Fig. 20. See Table 4 for amperage ratings to provide correct
wire and maximum overcurrent protection sizing.
SUPPLY VOLTAGE — Operating voltage to unit must be
within voltage range indicated on unit nameplate.
On 3-phase units, voltages under load between phases must
be balanced within 2%. Use the following formula to determine the percentage voltage imbalance:
% Voltage Imbalance
Optional pressure-rated hose assemblies designed specifically for use with Carrier units are available. Similar hoses can
be obtained from alternate suppliers. Supply and return hoses
are fitted with swivel-joint fittings at one end to prevent kinking during installation.
CAUTION
Backup wrench is required when tightening water connections to prevent water line damage. Failure to use a backup
wrench could result in equipment damage.
Refer to Fig. 14 for an illustration of a supply/return hose
kit. Male adapters secure hose assemblies to the unit and risers.
Install hose assemblies properly and check them regularly to
avoid system failure and reduced service life.
A50-8590
Rib Crimped
Swivel
Brass
Fitting
Brass
Fitting
Length
(0.6 m Length Standard)
MPT
Fig. 14 — Supply/Return Hose Kit
Step 8 — Wire Field Power Supply
WARNING
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.
= 100 x
max voltage deviation from average voltage
average voltage
Example: Supply voltage is 380-3-50.
AB = 372 volts
BC = 376 volts
AC = 384 volts
CAUTION
Use only copper conductors for field-installed electrical
wiring. Unit terminals are not designed to accept other
types of conductors. Failure to use copper conductors could
result in equipment damage.
Average Voltage =
12
372 + 376 + 384
3
=
(FP1) is set for water at –1.1 C. In earth loop applications,
jumper JW3 should be clipped to change the setting to –12.2 C
when using antifreeze in colder earth loop applications. See
Fig. 22.
NOTE: The extended range option should be selected
with water temperatures below 15.6 C to prevent internal
condensation.
AIR COIL FREEZE PROTECTION — The air coil freeze
protection jumper JW2 (FP2) is factory set for –1.1 C and
should not need adjusting.
ACCESSORY CONNECTIONS — Terminal A on the control
is provided to control accessory devices such as water valves,
electronic air cleaners, humidifiers, etc. This signal operates
with the compressor terminal. See Fig. 23. Refer to the specific
unit wiring schematic for details.
NOTE: The A terminal should only be used with 24-volt
signals — not line voltage signals.
WATER SOLENOID VALVES — An external solenoid
valve(s) should be used on ground water installations to shut
off flow to the unit when the compressor is not operating. A
slow closing valve may be required to help reduce water
hammer. Figure 23 shows typical wiring for a 24-vac external
solenoid valve. Figures 24 and 25 illustrate typical slow closing
water control valve wiring for Taco 500 Series and Taco ESP
Series valves. Slow closing valves take approximately 60 sec.
to open (very little water will flow before 45 sec.). Once fully
open, an end switch allows the compressor to be energized (only on valves with end switches). Only relay or triac based electronic thermostats should be used with slow closing valves.
When wired as shown, the slow closing valve will operate
properly with the following notations:
1. The valve will remain open during a unit lockout.
2. The valve will draw approximately 25 to 35 VA through
the “Y” signal of the thermostat.
1132
3
= 377
Determine maximum deviation from average voltage:
(AB) 372 – 377 = 5 v
(BC) 376 – 377 = 1 v
(AC) 384 – 377 = 7 v
Maximum deviation is 7 v.
Determine percent voltage imbalance.
% Voltage Imbalance = 100 x
7
377
= 1.86%
This amount of phase imbalance is satisfactory as it is
below the maximum allowable 2%.
Operation on improper line voltage or excessive phase
imbalance constitutes abuse and may cause damage to electrical components.
NOTE: If more than 2% voltage imbalance is present, contact
your local electric utility.
220-VOLT OPERATION — All 220/240 volt units are factory
wired for 240 volts. The transformers may be switched to
220-volt operation by switching the red (220 volt) wire with
the orange (240 volt) wire at the L1 terminal.
380-VOLT OPERATION — All 380/415 volt units are factory
wired for 415 volts. The transformers may be switched to
380-volt operation by switching the brown (380 volt) wire with
the purple (415 volt) wire at the L1 terminal.
Step 9 — Wire Field Controls
THERMOSTAT CONNECTIONS — The thermostat should
be wired directly to the ECM control board. See Fig. 21.
WATER FREEZE PROTECTION — The Aquazone™ control allows the field selection of source fluid freeze protection
points through jumpers. The factory setting of jumper JW3
IMPORTANT: Connecting a water solenoid valve can
overheat the anticipators of electromechanical thermostats. Only use relay based electronic thermostats.
Table 4 — 50PSH, PSV, PSD Electrical Data
50PS
VOLTAGE
UNIT SIZE CODE
009
012
018
7
7
7
7
9
7
9
7
9
9
9
9
9
024
030
036
042
048
060
070
FLA
HACR
LRA
RLA
—
—
—
—
V-Ph-Hz
220/240-1-50
220/240-1-50
220/240-1-50
220/240-1-50
380/420-3-50
220/240-1-50
380/420-3-50
220/240-1-50
380/420-3-50
380/420-3-50
380/420-3-50
380/420-3-50
380/420-3-50
MIN/MAX COMPRESSOR FAN MOTOR FLA TOTAL UNIT FLA MIN CIRCUIT AMPS MAX FUSE/HACR
VOLTAGE QTY RLA LRA
197/254
1
3.2 17.0
0.3
3.5
4.3
15
197/254
1
4.0 19.0
0.7
4.7
5.7
15
197/254
1
7.1 44.0
0.9
8.0
9.8
15
197/254
1 10.9 58.0
0.9
11.8
14.5
25
342/462
1
4.0 24.0
0.6
4.6
5.6
15
197/254
1 10.9 58.0
1.6
12.5
15.2
25
342/462
1
4.5 26.0
0.9
5.4
6.5
15
197/254
1 12.5 61.0
2.0
14.5
17.6
30
342/462
1
4.5 32.0
1.2
5.7
6.8
15
342/462
1
5.1 35.0
1.0
6.1
7.4
15
342/462
1
7.1 48.0
1.7
8.8
10.6
15
342/462
1
9.6 64.0
2.5
12.1
14.5
20
342/462
1
9.6 74.0
2.6
12.2
14.6
20
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Locked Rotor Amps
Rated Load Amps
13
Complete C
LEGEND
AL
BR
CB
CC
CO
COMPR
FP1
FP2
HP
HPWS
JW
LOC
MV
MVES
NEC
PSC
P1
RVS
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts
Blower Relay
Circuit Breaker
Compressor Contactor
Condensate Overflow Sensor
Compressor
Water Coil Freeze Protection Sensor
Air Coil Freeze Protection Sensor
High-Pressure Switch
High Pressure Water Switch
Jumper Wire
Loss of Charge Pressure Switch
Motorized Valve
Motorized Valve End Switch
National Electrical Code
Permanent Split Capacitor
Field Wiring Terminal Block
Reversing Valve Solenoid
TRANS
UPS
— Transformer
— Unit Performance Sentinel
Factory Low Voltage Wiring
Factory Line Voltage Wiring
Field Low Voltage Wiring
Field Line Voltage Wiring
Printed Circuit Trace
Optional Wiring
Solenoid Coil
Relay Contacts - N.C.
Relay Contacts - N.O.
Capacitor
Temperature Switch
Low Pressure Switch
Relay/Contactor Coil
High Pressure Switch
Thermistor
Wire Nut
Condensate Pan
Splice Cap
Circuit Breaker
G
LED
*Optional.
NOTES:
1. Compressor and blower motor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. 220/240 v transformer will be connected for 220 v operation. For 240 v
operation, disconnect RED lead at L1 and attach ORANGE lead to L1.
Insulate open end of RED lead. Transformer is energy limiting or may
have circuit breaker.
4. FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.
5. Check installation wiring information for specific thermostat hookup. Refer
to thermostat installation instructions for wiring to the unit. Thermostat
wiring must be “Class 1” and voltage rating equal to or greater than unit
supply voltage.
6. 24-v alarm signal shown. For dry alarm contact, cut JW1 jumper and dry
contact will be available between AL1 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. Fan motors factory wired for medium speed. For high and low speed
remove BLU wire from fan motor speed tap ‘M’ and connect to ‘H’ for high
or ‘L’ for low.
COMPLETE C CONTROLLER FAULT CODES
DESCRIPTION OF OPERATION
Normal Mode
LED
ON
Normal Mode with UPS Warning
ON
Complete C is Non-Functional
Fault Retry
Lockout
Over/Under Voltage Shutdown
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-UPS in Memory
Swapped FP1/FP2 Lockout
OFF
Slow Flash
Fast Flash
Slow Flash
Flashing Code 1
Flashing Code 2
Flashing Code 3
Flashing Code 4
Flashing Code 5
Flashing Code 6
ALARM RELAY
Open
Cycle (Closed 5 Sec.
Open 25 Sec.)
Open
Open
Closed
Open (Closed After 15 Min.)
Cycling Code 1
Cycling Code 2
Cycling Code 3
Cycling Code 4
Cycling Code 5
Cycling Code 6
Flashing Code 7
Cycling Code 7
Flashing Code 8
Flashing Code 9
Cycling Code 8
Cycling Code 9
Fig. 15 — Typical Wiring, Units with Complete C Controller, Single-Phase (Sizes 009-036)
14
Deluxe D
LEGEND
AL
BM
BMC
BR
CB
CC
CO
COMPR
FP1
FP2
HP
HPWS
JW
LOC
MV
MVES
NEC
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts
Blower Motor
Blower Motor Capacitor
Blower Relay
Circuit Breaker
Compressor Contactor
Condensate Overflow Sensor
Compressor
Water Coil Freeze Protection Sensor
Air Coil Freeze Protection Sensor
High-Pressure Switch
High Pressure Water Switch
Jumper Wire
Loss of Charge Pressure Switch
Motorized Valve
Motorized Valve End Switch
National Electric Code
*Optional.
P1
RVS
TRANS
—
—
—
Field Wiring Terminal Block
Reversing Valve Solenoid
Transformer
Factory Low Voltage Wiring
Factory Line Voltage Wiring
Field Low Voltage Wiring
Field Line Voltage Wiring
Printed Circuit Trace
Optional Wiring
Solenoid Coil
Relay Contacts - N.C.
Relay Contacts - N.O.
Capacitor
Temperature Switch
Low Pressure Switch
Relay/Contactor Coil
High Pressure Switch
Thermistor
Wire Nut
Condensate Pan
Splice Cap
Circuit Breaker
G
LED
Ground
NOTES:
1. Compressor and blower motor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. 220/240 v transformer will be connected for 220 v operation. For 240 v
operation, disconnect RED lead at L1 and attach ORANGE lead to L1.
Insulate open end of RED lead. Transformer is energy limiting or may
have circuit breaker.
4. FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.
5. Check installation wiring information for specific thermostat hookup. Refer
to thermostat installation instructions for wiring to the unit. Thermostat
wiring must be “Class 1” and voltage rating equal to or greater than unit
supply voltage.
6. 24-v alarm signal shown. For dry alarm contact, cut JW4 jumper and dry
contact will be available between AL1 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. Blower motor is factory wired for high and low speeds. For any other combination of speeds, attach black wire at the motor to the higher of the two
desired speed taps and the blue wire to the lower of the two desired
speed taps.
DELUXE D CONTROLLER FAULT CODES
OPERATION
Normal Mode
Deluxe D is Non-Functional
Test Mode
Night Setback
Emergency Shut Down
Invalid Thermostat Inputs
No Fault in Memory
HP Fault/(Lockout) Note 1
LP Fault/(Lockout) Note 1
FP1 Fault/(Lockout) Note 1
FP2 Fault/(Lockout) Note 1
CC Fault/(Lockout) Note 1
Over-Under Voltage
Normal Mode with UPS
Swapped FP1/FP2 Lockout
STATUS LED
(GREEN)
ON
OFF
—
Flashing Code 2
Flashing Code 3
Flashing Code 4
ON
Slow Flash/(Fast Flash)
Slow Flash/(Fast Flash)
Slow Flash/(Fast Flash)
Slow Flash/(Fast Flash)
Slow Flash/(Fast Flash)
Slow Flash
ON
Fast Flash
TEST LED
(YELLOW)
OFF
OFF
ON
—
—
—
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
FAULT LED
(RED)
Note 2
OFF
Note 2
Note 2
Note 2
Note 2
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
ALARM RELAY
Open
Open
Cycle (Note 3)
—
—
—
Open
Open/(Closed)
Open/(Closed)
Open/(Closed)
Open/(Closed)
Open/(Closed)
Open (Note 4)
Cycle (Note 5)
Closed
NOTES:
1. Status LED (GREEN) Slow Flash - Controller In - Fault Retry Mode. Fast Flash - Controller in Lockout Mode.
Slow Flash = 1 Flash per every 2 seconds. Fast Flash = 2 Flashes per every 1 second.
2. Fault LED (RED) flashes a code representing last fault in memory. If no fault in memory code 1 is flashed.
3. Cycles appropriate code, by cycling alarm relay in the same sequence as fault LED.
4. Alarm relay closes after 15 minutes.
5. Alarm relay cycles. Closed for 5 seconds and open for 25 seconds.
Fig. 16 — Typical Wiring, Units with Deluxe D Controller, Single-Phase (Sizes 009-036)
15
Complete C
LEGEND
AL
BR
CB
CC
CO
COMPR
FP1
FP2
HP
HPWS
JW
LOC
MV
MVES
NEC
PSC
P1
RVS
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts
Blower Relay
Circuit Breaker
Compressor Contactor
Condensate Overflow Sensor
Compressor
Water Coil Freeze Protection Sensor
Air Coil Freeze Protection Sensor
High-Pressure Switch
High Pressure Water Switch
Jumper Wire
Loss of Charge Pressure Switch
Motorized Valve
Motorized Valve End Switch
National Electrical Code (U.S.A.)
Permanent Split Capacitor
Field Wiring Terminal Block
Reversing Valve Solenoid
TRANS
UPS
— Transformer
— Unit Performance Sentinel
Factory Low Voltage Wiring
Factory Line Voltage Wiring
Field Low Voltage Wiring
Field Line Voltage Wiring
Printed Circuit Trace
Optional Wiring
Solenoid Coil
Relay Contacts - N.C.
Relay Contacts - N.O.
Capacitor
Temperature Switch
Low Pressure Switch
Relay/Contactor Coil
High Pressure Switch
Thermistor
Wire Nut
Condensate Pan
Splice Cap
Circuit Breaker
G
LED
*Optional.
NOTES:
1. Compressor and blower motor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. 220/240 v transformer will be connected for 220 v operation. For 240 v
operation, disconnect RED lead at L1 and attach ORANGE lead to L1.
Insulate open end of RED lead. Transformer is energy limiting or may
have circuit breaker.
4. FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.
5. Check installation wiring information for specific thermostat hookup. Refer
to thermostat installation instructions for wiring to the unit. Thermostat
wiring must be “Class 1” and voltage rating equal to or greater than unit
supply voltage.
6. 24-v alarm signal shown. For dry alarm contact, cut JW1 jumper and dry
contact will be available between AL1 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. Fan motors factory wired for medium speed. For high and low speed
remove BLU wire from fan motor speed tap ‘M’ and connect to ‘H’ for high
or ‘L’ for low.
9. Optional LON wires only correct if LON connection is desired at wall
sensor.
COMPLETE C CONTROLLER FAULT CODES
DESCRIPTION OF OPERATION
Normal Mode
LED
ON
Normal Mode with UPS Warning
ON
Complete C is Non-Functional
Fault Retry
Lockout
Over/Under Voltage Shutdown
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-UPS in Memory
Swapped FP1/FP2 Lockout
OFF
Slow Flash
Fast Flash
Slow Flash
Flashing Code 1
Flashing Code 2
Flashing Code 3
Flashing Code 4
Flashing Code 5
Flashing Code 6
ALARM RELAY
Open
Cycle (Closed 5 Sec.
Open 25 Sec.)
Open
Open
Closed
Open (Closed After 15 Min.)
Cycling Code 1
Cycling Code 2
Cycling Code 3
Cycling Code 4
Cycling Code 5
Cycling Code 6
Flashing Code 7
Cycling Code 7
Flashing Code 8
Flashing Code 9
Cycling Code 8
Cycling Code 9
Fig. 17 — Typical Wiring, Units with Complete C Controller and LON Controller (Sizes 009-036 Shown)
16
Complete C
LEGEND
AL
BR
CB
CC
CO
COMPR
FP1
FP2
HP
HPWS
JW
LOC
MV
MVES
NEC
PSC
P1
RVS
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Alarm Relay Contacts
Blower Relay
Circuit Breaker
Compressor Contactor
Condensate Overflow Sensor
Compressor
Water Coil Freeze Protection Sensor
Air Coil Freeze Protection Sensor
High-Pressure Switch
High Pressure Water Switch
Jumper Wire
Loss of Charge Pressure Switch
Motorized Valve
Motorized Valve End Switch
National Electrical Code
Permanent Split Capacitor
Field Wiring Terminal Block
Reversing Valve Solenoid
TRANS
UPS
— Transformer
— Unit Performance Sentinel
Factory Low Voltage Wiring
Factory Line Voltage Wiring
Field Low Voltage Wiring
Field Line Voltage Wiring
Printed Circuit Trace
Optional Wiring
Solenoid Coil
Relay Contacts - N.C.
Relay Contacts - N.O.
Capacitor
Temperature Switch
Low Pressure Switch
Relay/Contactor Coil
High Pressure Switch
Thermistor
Wire Nut
Condensate Pan
Splice Cap
Circuit Breaker
G
LED
*Optional.
NOTES:
1. Compressor and blower motor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. 380/420 v transformer will be connected for 380 v operation. For 420 v
operation, disconnect brown (380 v) lead at CB2 and attach purple lead
to CB2. Insulate open end of brown lead.
4. FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.
5. Check installation wiring information for specific thermostat hookup. Refer
to thermostat installation instructions for wiring to the unit. Thermostat
wiring must be “Class 1” and voltage rating equal to or greater than unit
supply voltage.
6. 24-v alarm signal shown. For dry alarm contact, cut JW1 jumper and dry
contact will be available between AL1 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. Fan motors factory wired for medium speed. For low speed remove BLU
wire from medium speed tap and connect low speed tap. For high speed
remove BLU wire from medium speed tap and connect to high speed tap.
Remove brown jumper wire from high speed tap. Insulate open end of
brown jumper.
COMPLETE C CONTROLLER FAULT CODES
DESCRIPTION OF OPERATION
Normal Mode
LED
ON
Normal Mode with UPS Warning
ON
Complete C is Non-Functional
Fault Retry
Lockout
Over/Under Voltage Shutdown
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-UPS in Memory
Swapped FP1/FP2 Lockout
OFF
Slow Flash
Fast Flash
Slow Flash
Flashing Code 1
Flashing Code 2
Flashing Code 3
Flashing Code 4
Flashing Code 5
Flashing Code 6
ALARM RELAY
Open
Cycle (Closed 5 Sec.
Open 25 Sec.)
Open
Open
Closed
Open (Closed After 15 Min.)
Cycling Code 1
Cycling Code 2
Cycling Code 3
Cycling Code 4
Cycling Code 5
Cycling Code 6
Flashing Code 7
Cycling Code 7
Flashing Code 8
Flashing Code 9
Cycling Code 8
Cycling Code 9
Fig. 18 — Typical Wiring, Units with Complete C Controller, Three Phase (Sizes 024-070)
17
Complete C
a50-8232
AL
ASTAT
BM
BMC
BR
CAP
CB
CC
CO
CR
DTS
FP1
FP2
HP
HPWS
HWG
JW
LOC
LWT
MV
MVES
NEC
P1
RVS
SAT
TRANS
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
LEGEND
Alarm Relay Contacts
Aquastat
Blower Motor
Blower Motor Capacitor
Blower Relay
Compressor Contactor
Circuit Breaker
Compressor Contactor
Sensor, Condensate Overflow
Cooling Relay
Discharge Temp Switch
Sensor, Water Coil Freeze Protection
Sensor, Air Coil Freeze Protection
High Pressure Switch
High Pressure Water Switch
Hot Water Generator
Jumper Wire
Loss of Charge Pressure Switch
Leaving Water Temperature
Motorized Valve
Motorized Valve End Switch
National Electrical Code
Field Wiring Terminal Block
Reversing Valve Solenoid
Supply Air Temperature
Transformer
Field Line Voltage Wiring
Field Low Voltage Wiring
Field Line Voltage Wiring
Field Low Voltage Wiring
Printed Circuit Trace
Optional Wiring
Wire Nut
Relay Contacts - N.C.
Relay Contacts - N.O.
Low Pressure Switch
High Pressure Switch
Relay/Contactor Coil
Splice Cap
Condensate Pan
Circuit Breaker
Solenoid Coil
Capacitor
G
Temperature Switch
LED
Thermistor
Ground
*Optional Wiring.
NOTES:
1. Compressor and blower motor thermally protected internally.
2. All wiring to the unit must comply with NEC and local codes.
3. 220/240 50 Hz units are wired for 240 v operation. For 220 v operation,
switch ORG wire to RED wire.
4. FP1 thermistor provides low temperature protection for water. When using
antifreeze solutions, cut JW3 jumper.
5. Refer to multiple protocol controller (MPC), LON, or TSTAT Installation,
Application, and Operation Manual for control wiring to the wire from PremierLink controller to “Y” Complete C when motorized valve is not used.
Thermostat wiring must be “Class 1” and voltage rating equal to or greater
than unit supply voltage.
6. 24v alarm signal shown. For dry contact, cut JW1 jumper and dry contact
will be available between AL1 and AL2.
7. Transformer secondary ground via green wire with yellow stripe from “C”
terminal to control box.
8. Aquastat is supplied with unit and must be wired in series with the hot leg
to the pump. Aquastat is rated for voltages up to 277v.
9. Blower motor is factory wired for medium speed. For low speed, remove
BLU wire from medium tap and connect to low speed tap. For high speed,
remove BLU wire from medium tap and connect to high speed tap.
Remove BRN jumper wire from high speed tap and tape off.
10. For low speed, remove BLK wire from BR6 and replace with RED wire.
Connect BLK and BRN wires together.
11. Fan motors are factory wired for medium speed. For high or low speed,
remove BLU wire from fan motor speed tap M and connect to H for high
speed and L for low speed.
COMPLETE C CONTROLLER FAULT CODES
DESCRIPTION OF OPERATION
Normal Mode
LED
ON
Normal Mode with UPS Warning
ON
Complete C is Non-Functional
Fault Retry
Lockout
Over/Under Voltage Shutdown
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-UPS in Memory
Swapped FP1/FP2 Lockout
OFF
Slow Flash
Fast Flash
Slow Flash
Flashing Code 1
Flashing Code 2
Flashing Code 3
Flashing Code 4
Flashing Code 5
Flashing Code 6
ALARM RELAY
Open
Cycle (Closed 5 Sec.
Open 25 Sec.)
Open
Open
Closed
Open (Closed After 15 Min.)
Cycling Code 1
Cycling Code 2
Cycling Code 3
Cycling Code 4
Cycling Code 5
Cycling Code 6
Flashing Code 7
Cycling Code 7
Flashing Code 8
Flashing Code 9
Cycling Code 8
Cycling Code 9
Fig. 19 — Typical Wiring, Units with Complete C and PremierLink™ Controller, Single-Phase (208/230 V)
18
CAPACITOR
COMPLETE C CONTROL
E
LIN
D
LOA
COMPRESSOR CONTACTOR
ECM CONTROL
BOARD
TRANSFORMER
A50-7737
Fig. 20 — 50PSH,PSV,PSD Typical Single-Phase Line Voltage Power Connection
CAPACITOR
COMPLETE C CONTROL
LIN
E
D
LOA
COMPRESSOR CONTACTOR
G
Y1
G
G
G
G
O
Y2
S1
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SW9
OFF ON
CFM
G
W
TRANSFORMER
R
Y
J1
DEHUM
TB1
a50-8197
R
C
Y2 Y1 G O W C R DH AL1 A
A
AL1
THERMOSTAT CONNECTION
Fig. 21 — Low Voltage Field Wiring
TERMINAL STRIP P2
A50-6269
C
24 VAC
TYPICAL
WATER
VALVE
A
Fig. 23 — Typical Accessory Wiring
A50-7764
AQUAZONE CONTROL (Complete C Shown)
Fig. 22 — Typical Aquazone™ Control Board
Jumper Locations
19
Y1
C
AIR COIL — To obtain maximum performance, clean the air
coil before starting the unit. A 10% solution of dishwasher
detergent and water is recommended for both sides of the coil.
Rinse thoroughly with water.
a50-8441
FIELD SELECTABLE INPUTS
2
3
1
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.
AMV
TACO VALVE
IMPORTANT: Jumpers and DIP switches should only
be clipped when power to control board has been turned
off.
Y1
C
HEATER SWITCH
THERMOSTAT
Complete C Control Jumper Settings
Fig. 24 — AMV Valve Wiring
WATER COIL FREEZE PROTECTION (FP1) LIMIT
SETTING — Select jumper 3 (JW3-FP1 Low Temp) to
choose FP1 limit of either –12.2 C or –1.1 C. To select –1.1 C
as the limit, DO NOT clip the jumper. To select –12.2 C as the
limit, clip the jumper.
AIR COIL FREEZE PROTECTION (FP2) LIMIT SETTING — Select jumper 2 (JW2-FP2 Low Temp) to choose
FP2 limit of either –12.2 C or –1.1 C. To select –1.1 C as the
limit, DO NOT clip the jumper. To select –12.2 C as the limit,
clip the jumper.
ALARM RELAY SETTING — Select jumper 1 (JW1-AL2
Dry) to either connect 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.
a50-8442
Fig. 25 — Taco SBV Valve Wiring
PRE-START-UP.
Deluxe D Control Jumper Settings
WATER COIL FREEZE PROTECTION (FP1) LIMIT
SETTING — Select jumper 3 (JW3-FP1 Low Temp) to
choose FP1 limit of either –12.2 C or –1.1 C. To select –1.1 C
as the limit, DO NOT clip the jumper. To select –12.2 C as the
limit, clip the jumper.
AIR COIL FREEZE PROTECTION (FP2) LIMIT SETTING — Select jumper 2 (JW2-FP2 Low Temp) to choose
FP2 limit of either –12.2 C or –1.1 C. To select –1.1 C as the
limit, DO NOT clip the jumper. To select –12.2 C as the limit,
clip the jumper.
ALARM RELAY SETTING — Select jumper 4 (JW4-AL2
Dry) to either connect 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
input normally opened or closed. To configure for normally
closed operation, DO NOT clip the jumper. To configure for
normally open operation, clip the jumper.
CAUTION
To avoid equipment damage, DO NOT leave system filled
in a building without heat during the winter unless antifreeze is added to system water. Condenser coils never
fully drain by themselves and will freeze unless winterized
with antifreeze.
System Checkout — When 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. Condensate line is open and correctly pitched.
10. Transformer switched to lower voltage tap if necessary.
11. Blower rotates freely — shipping support is removed.
12. Blower speed is on correct setting.
13. Air filter is clean and in position.
14. Service/access panels are in place.
15. Return-air temperature is between 4.4 to 26.7 C heating
and 10.0 to 43.3 C cooling.
16. Air coil is clean.
17. Control field-selected settings are correct.
Complete C Control DIP Switches — The Com-
plete C control has 1 DIP (dual in-line package) switch bank
with five switches labeled SW1. See Fig. 15 and 17-19.
PERFORMANCE MONITOR (PM) — The PM is a unique
feature that monitors water temperature and will display a warning when heat pump is beyond typical operating range. 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 compressor will have a 3-second delay before energizing.
NOTE: The alarm relay will not cycle during Test mode if
switch is set to OFF, stage 2.
SWITCH 3 — Not used.
20
If switch 8 is set for 10.0 C, then the compressor will be
used for heating as long as the FP1 is above 10.0 C. The compressor will not be used for heating when the FP1 is below
10.0 C and the compressor will operates in emergency heat
mode, staging on EH1 and EH2 to provide heat. If a thermal
switch is being used instead of the FP1 thermistor, only the
compressor will be used for heating mode when the FP1 terminals are closed. If the FP1 terminals are open, the compressor is
not used and the control goes into emergency heat mode.
DIP SWITCH BANK 2 (S2) — This set of DIP switches is
used to configure accessory relay options.
Switches 1 to 3 — These DIP switches provide selection of
Accessory 1 relay options. See Table 5 for DIP switch
combinations.
Switches 4 to 6 — These DIP switches provide selection of
Accessory 2 relay options. See Table 6 for DIP switch
combinations.
DDC OUTPUT AT EH2 — Switch 4 provides a selection for
Direct Digital Controls (DDC) operation. If set to DDC output
at EH2, the EH2 terminal will continuously output the last fault
code of the controller. If the control is set to EH2 Normal, then
EH2 will operate as standard electric heat output. Set the
switch to ON to set the EH2 to normal. Set the switch to OFF
to set the DDC output at EH2.
FACTORY SETTING — Switch 5 is set to ON. Do not
change the switch to OFF unless instructed to do so by the
factory.
Deluxe D Control DIP Switches — The Deluxe D
control has 2 DIP (dual in-line package) switch banks. Each
bank has 8 switches and is labeled either S1 or S2 on the circuit board. See Fig. 16.
DIP SWITCH BANK 1 (S1) — This set of switches offers
the following options for Deluxe D control configuration:
Performance Monitor (PM) — The PM is a unique feature
that monitors water temperature and will display a warning
when heat pump is beyond typical operating range. Set switch 1
to enable or disable performance monitor. To enable the PM, set
the switch to ON. To disable the PM, set the switch to OFF.
Compressor Relay Staging Operation — Switch 2 will enable or disable compressor relay staging operation. The compressor 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 master/slave applications. In master/slave applications, each compressor 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 selection 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, W1 is used for heating stage 1 and O/W2 is
used for heating stage 2. Select ON for heat pump thermostats.
In heat pump mode, Y1 used is for compressor stage 1, Y2 is
used for compressor stage 2, W1 is used for heating stage 3 or
emergency heat, and O/W2 is used for reversing valve (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 output. Select ON for thermostats with O output. Select OFF for
thermostats with B output.
Dehumidification Fan Mode — Switch 5 provides selection
of normal or dehumidification fan mode. Select OFF for dehumidification mode. The fan speed relay will remain OFF during cooling stage 2. Select ON for normal mode. The fan speed
relay will turn on during cooling stage 2 in normal mode.
Output — Switch 6 provides selection for DDC operation. If
set to DDC output at EH2, the EH2 terminal will continuously
output the last fault code of the controller. If the control is set to
EH2 normal, then the EH2 will operate as standard electric
heat output. Set the switch to ON to set the EH2 to normal. Set
the switch to OFF to set the DDC output at EH2.
Boilerless Operation — Switch 7 provides selection of boilerless operation and works in conjunction with switch 8. In
boilerless operation mode, only the compressor is used for
heating when FP1 is above the boilerless changeover temperature set by switch 8 below. Select ON for normal operation or
select OFF for boilerless operation.
Boilerless Changeover Temperature — Switch 8 on S1 provides selection of boilerless changeover temperature set point.
Select OFF for set point of 10.0 C or select ON for set point of
4.4 C.
Table 5 — DIP Switch Block S2 —
Accessory 1 Relay Options
ACCESSORY 1
RELAY OPTIONS
Cycle with Fan
Digital NSB
Water Valve — Slow Opening
OAD
Reheat — Humidistat
Reheat — Dehumidistat
DIP SWITCH POSITION
1
2
3
On
On
On
Off
On
On
On
Off
On
On
On
Off
Off
Off
Off
Off
On
Off
LEGEND
NSB — Night Setback
OAD — Outside Air Damper
NOTE: All other DIP switch combinations are invalid.
Table 6 — DIP Switch Block S2 —
Accessory 2 Relay Options
ACCESSORY 2
RELAY OPTIONS
Cycle with Compressor
Digital NSB
Water Valve — Slow Opening
OAD
DIP SWITCH POSITION
4
5
6
On
On
On
Off
On
On
On
Off
On
On
On
Off
LEGEND
NSB — Night Setback
OAD — Outside Air Damper
NOTE: All other switch combinations are invalid.
Auto Dehumidification Mode or High Fan Mode — Switch 7
provides selection of auto dehumidification fan mode or high
fan mode. In auto dehumidification fan mode, the fan speed
relay will remain off during cooling stage 2 if terminal H is
active. In high fan mode, the fan enable and fan speed relays will
turn on when terminal H is active. Set the switch to ON for auto
dehumidification fan mode or to OFF for high fan mode.
Factory Setting — Switch 8 is set to ON. Do not change the
switch to OFF unless instructed to do so by the factory.
Deluxe D Control Accessory Relay Configurations — The following accessory relay settings are applica-
ble for Deluxe D control:
CYCLE WITH FAN — In this configuration, the accessory
relay 1 will be ON any time the Fan Enable relay is on.
CYCLE WITH COMPRESSOR — In this configuration, the
accessory relay 2 will be ON any time the Compressor relay
is on.
DIGITAL NIGHT SET BACK (NSB) — In this configuration, the relay will be ON if the NSB input is connected to
ground C.
21
longer connected to ground C. After 30 minutes, the relay will
start if the Fan Enable is set to ON.
NOTE: If there are no relays configured for digital NSB, then
the NSB and override (OVR) inputs are automatically configured for mechanical operation.
MECHANICAL NIGHT SET BACK — When NSB input is
connected to ground C, all thermostat inputs are ignored. A
thermostat set back 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 OPENING) — If relay is configured
for Water Valve (slow opening), the relay will start 60 seconds
prior to starting compressor relay.
OUTSIDE AIR DAMPER (OAD) — If relay is configured for
OAD, the relay will normally be ON any time the Fan Enable
relay is energized. The relay will not start for 30 minutes following a return to normal mode from NSB, when NSB is no
PSC (Permanent Split Capacitor) Blower
Speed Selection — All water source heat pumps are
factory set to deliver rated airflow at nominal static (37 Pa) on
medium speed. Where higher static is needed, high speed can
be utilized (100 to 125 Pa). Low speed will deliver approximately 85% of rated airflow (25 Pa). The PSC blower fan
speed can be changed on all units by swapping wires connected to the relay contacts that control the fan.
The PSC blower fan speed can be changed by moving the
blue wire on the fan motor terminal block to the desired speed.
The 50PS units are designed to deliver rated airflow at nominal
static (37 Pa) on medium speed (factory setting) and rated airflow at a higher static (100 to 125 Pa) on high speed for applications where higher static is required. Low speed will deliver
approximately 85% of rated airflow at 25 Pa. Blower performance is shown in Table 7.
Table 7 — PSC Blower Motor Performance Data
50PS
UNIT
SIZE
VOLTAGE
009
220V
012
220V
018
220V
220V
024
380V
220V
030
380V
220V
036
380V
042
380V
048
380V
060
380V
070
380V
FAN
SPEED
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
HIGH
MED
LOW
RATED
MIN
AIRFLOW AIRFLOW
(1/s)
(1/s)
118
94
118
94
118
94
142
118
142
118
142
118
236
165
236
165
236
165
330
236
330
236
330
236
330
236
330
236
330
236
378
283
378
283
378
283
378
283
378
283
378
283
472
330
472
330
472
330
472
330
472
330
472
330
543
401
543
401
543
401
614
472
614
472
614
472
755
590
755
590
755
590
802
684
802
684
802
684
AIRFLOW (l/s) AT EXTERNAL STATIC PRESSURE (Pa)
0
25
50
75
100
160
153
137
217
196
165
369
321
287
412
347
292
422
361
329
547
488
431
516
456
398
719
533
463
722
570
524
645
513
446
822
701
628
993
901
847
1124
1045
986
149
143
128
204
186
160
362
319
285
404
344
291
411
355
325
514
464
414
496
443
395
714
536
467
713
574
524
634
506
443
800
693
625
968
897
839
1088
1014
959
142
134
121
191
176
153
350
313
280
391
339
289
395
344
317
480
434
393
471
425
386
696
536
470
701
569
525
616
496
437
770
674
612
962
891
832
1046
980
932
130
123
112
177
162
142
327
294
268
365
322
276
370
325
301
439
399
363
433
395
370
672
527
464
676
556
515
598
475
426
735
649
591
934
859
812
1001
950
898
115
110
96
161
148
131
294
270
247
328
296
255
334
298
281
390
354
328
391
361
340
639
496
414
640
494
473
558
440
404
685
613
554
889
832
786
951
897
865
LEGEND
ESP — External Static Pressure
HS — High Static
125
150
150
134
120
258
229
201
286
254
220
294
259
248
340
307
286
344
315
305
586
387
358
500
435
400
489
370
92
84
79
223
635
568
515
842
797
759
892
855
824
175
200
225
680
639
618
702
594
227
284
285
285
284
385
331
331
411
346
339
401
331
574
502
498
797
752
712
843
806
781
732
700
667
779
751
NOTES:
1. Shaded areas denote ESP where operation is not recommended.
2. Units factory shipped on medium speed. Other speeds require
field selection.
3. All airflow is rated and shown above at the lower voltage if unit
is dual voltage rated, e.g., 208 v for 208/230 v units.
4. Only two-speed fan (high and medium) available on 575 v
units.
22
3. The suction pressure should drop and the discharge
pressure should rise, as is normal on any start-up.
If the suction pressure does not drop and the discharge
pressure does not rise to normal levels:
1. Turn off power to the unit. Install disconnect tag.
2. Reverse any two of the unit power leads.
3. Reapply power to the unit and verify pressures are correct.
The suction and discharge pressure levels should now move
to their normal start-up levels.
When the compressor is rotating in the wrong direction, the
unit makes more noise and does not provide cooling.
After a few minutes of reverse operation, the scroll compressor 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.
START-UP
Use the procedure outlined below to initiate proper unit
start-up.
NOTE: This equipment is designed for indoor installation only.
Operating Limits
ENVIRONMENT — This equipment is designed for indoor
installation ONLY. Extreme variations in temperature, humidity and corrosive water or air will adversely affect the unit performance, reliability and service life.
POWER SUPPLY — A voltage variation of ± 10% of nameplate utilization voltage is acceptable.
UNIT STARTING CONDITIONS — Units start and operate
in an ambient temperature of 7.2 C with entering-air temperature at 10.0 C, entering-water temperature at 15.5 C and with
both air and water at the flow rates used.
NOTE: These operating limits are not normal or continuous
operating conditions. Assume that such a start-up is for the
purpose of bringing the building space up to occupancy temperature. See Table 8 for operating limits.
Unit Start-Up
1. Turn the thermostat fan position to “ON”. Blower should
start.
2. Balance air flow at registers.
3. Adjust all valves to their full open positions. Turn on the
line power to all heat pumps.
4. Room temperature should be within the minimum and
maximum ranges of Table 8. During start-up checks, loop
water temperature entering the heat pump should be between 16 C and 35 C.
5. Two factors determine the operating limits of Carrier heat
pumps, return air temperature and water temperature.
When any one of these factors is at a minimum or maximum level, the other factor must be at normal level to ensure proper unit operation.
a. Adjust the unit thermostat to the warmest setting.
Place the thermostat mode switch in the “COOL”
position. Slowly reduce thermostat setting until the
compressor activates.
b. Check for cool air delivery at the unit grille within
a few minutes after the unit has begun to operate.
Units have a five-minute time delay in the control
circuit that can be eliminated on the control board
if needed.
c. Verify that the compressor is on and that the water
flow rate is correct by measuring pressure drop
through the heat exchanger using the P/T plugs and
comparing to Table 9.
d. Check the elevation and cleanliness of the condensate lines. Dripping may be a sign of a blocked
line. Check that the condensate trap is filled to provide a water seal.
e. Check the temperature of both entering and leaving
water. See Table 10. If temperature is within range,
proceed with the test. Verify correct water flow by
comparing unit pressure drop across the heat
exchanger versus the data in Table 9. Heat of rejection (HR) can be calculated and compared to the
Product Data performance tables. The formula for
HR for systems with water is as follows:
HR (kW) = TD x l/s x 4.18, where TD is the temperature difference between the entering and leaving water, and l/s is the flow rate, determined by
comparing the pressure drop across the heat
exchanger.
f. Check air temperature drop across the air coil
when compressor is operating. Air temperature
drop should be between 8°C and 14°C.
WARNING
When the disconnect switch is closed, high voltage is present in some areas of the electrical panel. Exercise caution
when working with the energized equipment. Failure to
heed this warning may result in personal injury.
1.
2.
3.
4.
Restore power to system.
Turn thermostat fan position to ON. Blower should start.
Balance airflow at registers.
Adjust all valves to the full open position and turn on the
line power to all heat pump units.
5. Operate unit in the cooling cycle. Refer to Table 8 for unit
operating limits.
NOTE: Three factors determine the operating limits of a unit:
(1) entering air temperature, (2) water temperature and (3)
ambient temperature. Whenever any of these factors are at a
minimum or maximum level, the other two factors must be at a
normal level to ensure proper unit operation.
Table 8 — Operating Limits —
50PSH, PSV, PSD Units
AIR LIMITS
Min. Ambient Air
Rated Ambient Air
Max. Ambient Air
Min. Entering Air (db/wb)
Rated Entering Air (db/wb)
Max. Entering Air (db/wb)
WATER LIMITS
Min. Entering Water
Normal Entering Water
Max. Entering Water
Normal Water Flow (L/m per kW)
COOLING (C)
7
27
43
16/10
27/19
35/24
HEATING (C)
4
20
29
7
20
27
–1
10 to 43
49
1.6 to 3.2
–6.7
–1 to 21
32
1.6 to 3.2
LEGEND
db — Dry Bulb
wb — Wet Bulb
NOTE: Value in heating column is dry bulb only. Any wet bulb reading is
acceptable.
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.
23
e. Check air temperature rise across the air coil when
compressor is operating. Air temperature rise
should be between 11° C and 17° C.
f. Check for vibration, noise, and water leaks.
7. If unit fails to operate, perform troubleshooting analysis
(see troubleshooting section). If the check described fails
to reveal the problem and the unit still does not operate,
contact a trained service technician to ensure proper diagnosis and repair of the equipment.
8. When testing is complete, set system to maintain desired
comfort level.
g. Turn thermostat to “OFF” position. A hissing noise
indicates proper functioning of the reversing valve.
6. Allow five (5) minutes between tests for pressure to
equalize before beginning heating test.
a. Adjust the thermostat to the lowest setting. Place
the thermostat mode switch in the “HEAT” position.
b. Slowly raise the thermostat to a higher temperature
until the compressor activates.
c. Check for warm air delivery within a few minutes
after the unit has begun to operate.
d. Refer to Table 10. Check the temperature of both
entering and leaving water. If temperature is within
range, proceed with the test. Verify correct water
flow by comparing unit pressure drop across the
heat exchanger versus the data in Table 9.
Heat of extraction (HE) can be calculated and compared to the Product Data performance tables. The
formula for HE for systems with water is as follows:
HE (kW) = TD x l/s x 4.18, where TD is the temperature difference between the entering and leaving water, and l/s is the flow rate determined by
comparing the pressure drop across the heat
exchanger.
Flow Regulation — Flow regulation can be accomplished 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 determined. See Table 9. Adjust the water control valve until the
flow of 0.09 to 0.13 L/s is achieved. Since the pressure constantly varies, two pressure gages may be needed in some
applications.
An alternative method is to install a flow control device.
These devices are typically an orifice of plastic material designed 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 can be reduced by applying some
back pressure. To accomplish this, slightly close the leaving
isolation valve of the well water setup.
Table 9 — Coaxial Water Pressure Drop
50PS UNIT
SIZE
009
012
015
018
024
030
036
042
048
060
L/s
0.088
0.132
0.777
0.114
0.164
0.221
0.176
0.258
0.347
0.252
0.378
0.504
0.252
0.378
0.504
0.284
0.428
0.567
0.347
0.523
0.693
0.378
0.567
0.756
0.473
0.712
0.945
0.523
0.781
1.040
-1 C
5.5
10.3
18.6
4.1
14.5
26.2
4.8
14.5
24.1
10.3
21.4
35.2
10.3
21.4
35.2
11.7
22.8
39.3
7.6
15.2
26.9
9.0
17.9
31.0
4.1
15.9
33.1
16.6
35.9
55.2
WARNING
PRESSURE DROP (kPa)
10 C
21 C
4.8
4.1
9.7
8.3
16.5
15.2
3.4
2.8
13.1
11.0
23.4
20.7
3.4
2.1
11.7
9.7
19.3
16.6
9.0
7.6
17.9
15.9
29.7
26.2
9.0
7.6
17.9
15.9
29.7
26.2
9.0
7.6
21.4
20.0
35.9
33.1
6.2
5.5
14.5
13.8
24.8
22.1
7.6
6.9
17.2
15.9
29.0
26.2
2.8
2.1
14.5
13.8
29.7
26.9
13.8
11.7
31.0
27.6
48.3
43.4
32 C
4.1
7.6
13.1
2.1
9.7
17.9
1.4
7.6
13.8
6.9
14.5
23.4
6.9
14.5
23.4
6.2
17.9
30.3
4.8
12.4
21.4
6.2
15.2
24.1
1.4
12.4
24.1
11.0
26.2
41.4
To avoid possible injury or death due to electrical shock,
open the power supply disconnect switch and secure it in
an open position before flushing system.
Flushing — Once the piping is complete, units require final
purging and loop charging. A flush cart pump of at least 1.5 hp
is needed to achieve adequate flow velocity in the loop to purge
air and dirt particles from the loop. Flush the loop in both directions with a high volume of water at a high velocity. Follow the
steps below to properly flush the loop:
1. Verify power is off.
2. Fill loop with water from hose through flush cart before
using flush cart pump to ensure an even fill. Do not allow
the water level in the flush cart tank to drop below the
pump inlet line in order to prevent air from filling the line.
3. Maintain a fluid level in the tank above the return tee in
order to avoid air entering back into the fluid.
4. Shutting off the return valve that connects into the flush
cart reservoir will allow 345 kPa surges to help purge air
pockets. This maintains the pump at 345 kPa.
5. To purge, keep the pump at 345 kPa until maximum
pumping pressure is reached.
6. Open the return valve to send a pressure surge through
the loop to purge any air pockets in the piping system.
7. A noticeable drop in fluid level will be seen in the flush
cart tank. This is the only indication of air in the loop.
NOTE: If air is purged from the system while using a
250 mm PVC flush tank, the level drop will only be 25 to
50 mm since liquids are incompressible. If the level drops
more than this, flushing should continue since air is still
being compressed in the loop. If level is less than 25 to
50 mm, reverse the flow.
8. Repeat this procedure until all air is purged.
9. Restore power.
Antifreeze may be added before, during, or after the flushing process. However, depending on when it is added in the
process, it can be wasted. Refer to the Antifreeze section for
more detail.
Table 10 — Water Temperature Change
Through Heat Exchanger
WATER FLOW RATE (GPM)
For Closed Loop: Ground Source or
Cooling/Boiler Systems at 3.2 L/m per kW
For Open Loop: Ground Water Systems at
1.6 L/m per kW
COOLING
RISE (°C)
Min
Max
HEATING
DROP (°C)
Min
Max
5.0
6.7
2.2
4.4
11.1
14.4
5.6
9.4
24
Loop static pressure will fluctuate with the seasons. Pressures will be higher in the winter months than during the warmer months. This fluctuation is normal and should be considered
when charging the system initially. Run the unit in either
heating or cooling for several minutes to condition the loop to a
homogenous temperature.
When complete, perform a final flush and pressurize the
loop to a static pressure of 275 to 350 kPa for winter months or
100 to 140 kPa for summer months.
After pressurization, be sure to remove the plug from the
end of the loop pump motor(s) to allow trapped air to be
discharged and to ensure the motor housing has been flooded.
Be sure the loop flow center provides adequate flow through
the unit by checking pressure drop across the heat exchanger.
Compare the results to the data in Table 9.
Table 12 — Antifreeze Percentages by Volume
ANTIFREEZE
Methanol (%)
100% USP Food Grade
Propylene Glycol (%)
Ethanol (%)
MINIMUM TEMPERATURE FOR FREEZE
PROTECTION (C)
–12.2
–9.4
–6.7
–3.9
25
21
16
10
38
30
22
15
29
25
20
14
Cooling Tower/Boiler Systems — These systems
typically use a common loop temperature maintained at 15.6 C
to 32.2 C. Carrier recommends using a closed circuit evaporative cooling tower with a secondary heat exchanger between the
tower and the water loop. 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-
Antifreeze — In areas where entering loop temperatures
drop below 5 C or where piping will be routed through areas
subject to freezing, antifreeze is needed.
Alcohols and glycols are commonly used as antifreeze
agents. Freeze protection should be maintained to 8.3° C below
the lowest expected entering loop temperature. For example, if
the lowest expected entering loop temperature is –1.1 C, the
leaving loop temperature would be –5.6 to –3.9 C. Therefore,
the freeze protection should be at –9.4 C (–1.1 C – 8.3 C =
–9.4 C).
low water temperatures from –1.1 to 43.3 C. The external loop
field is divided up into 50 mm 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. Locate air separation in the piping system prior to the fluid re-entering the loop field.
IMPORTANT: All alcohols should be pre-mixed and
pumped from a reservoir outside of the building or
introduced under water level to prevent fuming.
inputs, terminals and safety controls are checked for normal
operation.
NOTE: The compressor will have a 5-minute anti-short cycle
upon power up.
OPERATION
Power Up Mode — The unit will not operate until all the
Calculate the total volume of fluid in the piping system. See
Table 11. Use the percentage by volume in Table 12 to determine the amount of antifreeze to use. Antifreeze concentration
should be checked from a well-mixed sample using a hydrometer to measure specific gravity.
FREEZE PROTECTION SELECTION — The –1.1 C 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 (antifreeze –12.2 C) set point to avoid nuisance faults.
Units with Aquazone™ Complete C Control
STANDBY — Y and W terminals are not active in Standby
mode, however the O and G terminals may be active, depending on the application. The compressor will be off.
COOLING — Y and O terminals are active in Cooling mode.
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 time delay. After both delays are complete, 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 time 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 remain on and EH1 is immediately 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 off) if FP1 temperature is greater than 7.2 C and FP2 is greater than 43.3 C.
LOCKOUT MODE — The status LED will flash fast in
Lockout mode and the compressor relay will be turned off
immediately. Lockout mode can be “soft” reset via the Y input
or can be “hard” reset via the disconnect. The last fault causing
the lockout is stored in memory and can be viewed by entering
test mode.
LOCKOUT WITH EMERGENCY HEAT — While in Lockout mode, if W becomes active, then Emergency Heat mode
will occur.
EMERGENCY HEAT — In Emergency Heat mode, terminal
W is active while terminal Y is not. Terminal G must be active
Table 11 — Approximate Fluid Volume (L)
per 30 M of Pipe
PIPE
Copper
Rubber Hose
Polyethylene
DIAMETER (in.) [mm] VOLUME (gal.) [L]
1 [25.4]
4.1 [15.5]
1.25 [31.8]
6.4 [24.2]
1.5 [38.1]
9.2 [34.8]
1 [25.4]
3.9 [14.8]
3/ IPS SDR11
2.8 [10.6]
4
1 IPS SDR11
4.5 [17.0]
1
1 /4 IPS SDR11
8.0 [30.8]
1/ IPS SDR11
10.9 [41.3]
2
2 IPS SDR11
18.0 [68.1]
11/4 IPS SCH40
8.3 [31.4]
1
10.9 [41.3]
1 /2 IPS SCH40
2 IPS SCH40
17.0 [64.4]
LEGEND
IPS — Internal Pipe Size
SCH — Schedule
SDR — Standard Dimensional Ratio
NOTE: Volume of heat exchanger is approximately 1.0 gallon
(3.78 liters).
25
dual compressor application, all compressor relays and related
functions will track with their associated DIP switch 2 on S1.
NIGHT LOW LIMIT (NLL) STAGED HEATING — In NLL
staged Heating mode, the override (OVR) input becomes active and is recognized as a call for heating and the control will
immediately go into a Heating Stage 1 mode. With an additional 30 minutes of NLL demand, the control will go into Heating
Stage 2 mode. With another additional 30 minutes of NLL
demand, the control will go into Heating Stage 3 mode.
or the W terminal is disregarded. EH1 is immediately turned
on. EH2 will turn on after 5 minutes of continual emergency
heat demand.
Units with Aquazone Deluxe D Control
EXTENDED COMPRESSOR OPERATION MONITOR —
If the compressor has been on for 4 continuous hours the control will automatically turn off the compressor relay and wait
the short cycle time protection time. All appropriate safeties,
including the low-pressure switch, will be monitored. If all
operations are normal and the compressor demand is still present, the control will turn the compressor back on.
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
Enable will immediately turn on. If there is a Fan 2 demand,
the Fan Enable and Fan Speed will immediately 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
Enable and Compressor relays are turned on immediately.
Once the demand is removed, the relays are turned off and the
control reverts to Standby 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 2 — In Heating Stage 2 mode, the Fan
Enable and Compressor relays are remain on. The Fan Speed
relay is turned on immediately and turned off immediately
once the demand 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
Enable, Fan Speed and Compressor relays remain on. The EH1
output is turned on immediately. With continuing Heat Stage 3
demand, EH2 will turn on after 10 minutes. EH1 and EH2 are
turned off immediately when the Heating Stage 3 demand is removed. The control reverts to Heating Stage 2 mode.
The output signal EH2 will be off if FP1 is greater than
7.2 C AND FP2 (when shorted) is greater than 43.3 C during
Heating Stage 3 mode. This condition will have a 30-second
recognition time. Also, during Heating Stage 3 mode, EH1,
EH2, Fan Enable, and Fan Speed will be ON if G input is not
active.
EMERGENCY HEAT — In Emergency Heat mode, the Fan
Enable and Fan Speed relays are turned on. The EH1 output is
turned on immediately. With continuing Emergency Heat demand, EH2 will turn on after 5 minutes. Fan Enable and Fan
Speed relays are turned off after a 60-second delay. The control
reverts to Standby mode.
Output EH1, EH2, Fan Enable, and Fan Speed will be ON if
the G input is not active during Emergency Heat mode.
COOLING STAGE 1 — In Cooling Stage 1 mode, the Fan
Enable, compressor and RV relays are turned on immediately.
If configured as stage 2 (DIP switch set to OFF) then the compressor and fan will not turn on until there is a stage 2 demand.
The Fan Enable and compressor relays are turned off immediately when the Cooling Stage 1 demand is removed. The control reverts to Standby mode. The RV relay remains on until
there is a heating demand. If there is a master/slave or dual
compressor application, all compressor relays and related functions will track with their associated DIP switch 2 on S1.
COOLING STAGE 2 — In Cooling Stage 2 mode, the Fan
Enable, compressor and RV relays remain on. The Fan Speed
relay is turned on immediately and turned off immediately
once the Cooling Stage 2 demand is removed. The control
reverts to Cooling Stage 1 mode. If there is a master/slave or
COMPLETE C AND DELUXE D BOARD
SYSTEM TEST
Test mode provides the ability to check the control operation in a timely manner. The control enters a 20-minute test
mode by momentarily shorting the test terminals. All time delays are sped up 15 times. The follow operations are common
to both Complete C and Deluxe D controls.
Test Mode — To enter Test mode, cycle the fan 3 times
within 60 seconds. The LED 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 13 and 14.
To exit Test mode, short the terminals for 3 seconds or cycle
the power 3 times within 60 seconds.
NOTE: The flashing code and alarm relay cycling code 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.
Retry Mode — In Retry mode, the status LED will start to
flash slowly to signal that the control is trying to recover from
an input fault. The control will stage off the outputs and try to
again satisfy the thermostat used to terminal Y. Once the thermostat input calls are satisfied, the control will continue normal
operation.
NOTE: If 3 consecutive faults occur without satisfying the
thermostat input call to terminal Y, the control will go into
lockout mode. The last fault causing the lockout is stored in
memory and can be viewed by entering Test mode.
Table 13 — Complete C Control Current LED
Status and Alarm Relay Operations
LED STATUS
On
Off
Slow Flash
Fast Flash
DESCRIPTION OF OPERATION
Normal Mode
Normal Mode with PM Warning
Complete C Control is non-functional
Fault Retry
Lockout
Slow Flash
Over/Under Voltage Shutdown
Flashing Code 1
Flashing Code 2
Flashing Code 3
Flashing Code 4
Flashing Code 5
Flashing Code 6
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
Flashing Code 7
Flashing Code 8
Flashing Code 9
ALARM RELAY
Open
Cycle (closed 5 sec.,
open 25 sec.)
Open
Open
Closed
Open, (Closed after
15 minutes)
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
LEGEND
CO — Condensate Overflow
LED — Light-Emitting Diode
FP — Freeze Protection
LP
— Low Pressure
HP — High Pressure
PM
— Performance Monitor
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
10-second pause. This sequence will repeat continually until the fault is cleared.
26
appear as one fast flash alternating with a 10-second pause. See
Table 15.
Table 14 — Complete C Control LED Code and
Fault Descriptions
LED CODE
1
DESCRIPTION
There has been no fault since the
last power-down to power-up
sequence
2
High-Pressure Switch
HP switch opens instantly
3
Low-Pressure Switch
LP switch opens for 30 continuous seconds before or during a
call (bypassed for first
60 seconds)
4
Freeze Protection Coax —
FP1 below Temp limit for
FP1
30 continuous seconds (bypassed
for first 60 seconds of operation)
5
Freeze Protection Air Coil — FP2 below Temp limit for
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 <19VAC or
(Autoreset) Shutdown
>30VAC
8
PM Warning
Performance Monitor Warning
has occurred.
9
FP1 and FP2
FP1 temperature is higher than
Thermistors are swapped
FP2 in heating/test mode, or FP2
temperature is higher than FP1 in
cooling/test mode.
FP
HP
LED
FAULT
No fault in memory
LEGEND
— Freeze Protection
LP
— High Pressure
PM
— Light-Emitting Diode
SERVICE
Perform the procedures outlined below periodically, as
indicated.
WARNING
To prevent injury or death due to electrical shock or contact
with moving parts, open unit disconnect switch before servicing unit.
IMPORTANT: When a compressor is removed from this
unit, system refrigerant circuit oil will remain in the compressor. To avoid leakage of compressor oil, the refrigerant
lines of the compressor must be sealed after it is removed.
IMPORTANT: All refrigerant discharged from this unit
must be recovered without exception. Technicians must follow industry accepted guidelines and all local, state and federal statutes for the recovery and disposal of refrigerants.
— Low Pressure
— Performance Monitor
IMPORTANT: To avoid the release of refrigerant into the
atmosphere, the refrigerant circuit of this unit must only be
serviced by technicians who meet local, state and federal
proficiency requirements.
Aquazone™ Deluxe D Control LED Indicators — There are 3 LED indicators on the Deluxe D control:
STATUS LED — Status LED indicates the current status or
mode of the D control. The Status LED light is green.
TEST LED — Test LED will be activated any time the D
control is in test mode. The Test LED light is yellow.
FAULT LED — Fault LED light is red. The fault LED will
always flash a code representing the last fault in memory. If
there is no fault in memory, the fault LED will flash code 1 and
Filters — Filters must be clean for maximum performance.
Inspect filters every month under normal operating conditions.
Replace when necessary.
IMPORTANT: Units should never be operated without
a filter.
Table 15 — Aquazone™ Deluxe D Control Current LED Status and Alarm Relay Operations
TEST LED
(Yellow)
Off
FAULT LED (Red)
ALARM RELAY
Normal Mode
STATUS LED
(Green)
On
Flash Last Fault Code in Memory
Normal Mode with PM
On
Off
Flashing Code 8
Open
Cycle (closed 5 sec,
open 25 sec, …)
Off
Off
Off
Open
—
Flashing Code 2
Flashing Code 3
Flashing Code 4
On
Slow Flash
Slow Flash
Slow Flash
Slow Flash
Slow Flash
Slow Flash
Fast Flash
Fast Flash
Fast Flash
Fast Flash
Fast Flash
On
—
—
—
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Flash Last Fault Code in Memory
Flash Last Fault Code in Memory
Flash Last Fault Code in Memory
Flash Last Fault Code in Memory
Flashing Code 1
Flashing Code 2
Flashing Code 3
Flashing Code 4
Flashing Code 5
Flashing Code 6
Flashing Code 7
Flashing Code 2
Flashing Code 3
Flashing Code 4
Flashing Code 5
Flashing Code 6
Cycling Appropriate Code
—
—
—
Open
Open
Open
Open
Open
Open
Open (closed after 15 minutes)
Closed
Closed
Closed
Closed
Closed
DESCRIPTION
Deluxe D Control
is non-functional
Test Mode
Night Setback
ESD
Invalid T-stat Inputs
No Fault in Memory
HP Fault
LP Fault
FP1 Fault
FP2 Fault
CO Fault
Over/Under Voltage
HP Lockout
LP Lockout
FP1 Lockout
FP2 Lockout
CO Lockout
LEGEND
CO — Condensate Overflow
HP
ESD — Emergency Shutdown
LP
FP
— Freeze Protection
PM
NOTES:
1. If there is no fault in memory, the Fault LED will flash code 1.
2. Codes will be displayed with a 10-second Fault LED pause.
3. Slow flash is 1 flash every 2 seconds.
4. Fast flash is 2 flashes every 1 second.
5. EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes followed by
a 10-second pause. This sequence will repeat continually until the fault is
cleared.
— High Pressure
— Low Pressure
— Performance Monitor
27
Clean condensers with an inhibited hydrochloric acid solution. The acid can stain hands and clothing, damage concrete,
and, without inhibitor, damage steel. Cover surroundings to
guard against splashing. Vapors from vent pipe are not harmful,
but take care to prevent liquid from being carried over by the
gases.
Warm solution acts faster, but cold solution is just as effective if applied for a longer period.
GRAVITY FLOW METHOD — Do not add solution faster
than vent can exhaust the generated gases.
When condenser is full, allow solution to remain overnight,
then drain condenser and flush with clean water. Follow acid
manufacturer’s instructions. See Fig. 26.
FORCED CIRCULATION METHOD — Fully open vent
pipe when filling condenser. The vent may be closed when
condenser is full and pump is operating. See Fig. 27.
Regulate flow to condenser with a supply line valve. If
pump is a non overloading type, the valve may be fully closed
while pump is running.
For average scale deposit, allow solution to remain in condenser overnight. For heavy scale deposit, allow 24 hours.
Drain condenser and flush with clean water. Follow acid
manufacturer’s instructions
Water Coil — Keep all air out of the water coil. Check
open loop systems to be sure the well head is not allowing air
to infiltrate the water line. Always keep lines airtight.
Inspect heat exchangers regularly, and clean more frequently if the unit is located in a “dirty” environment. Keep the heat
exchanger full of water at all times. Open loop systems should
have an inverted P trap placed in the discharge line to keep
water in the heat exchanger during off cycles. Closed loop
systems must have a minimum of 100 kPa during the summer
and 275 kPa during the winter.
Check P trap frequently for proper operation.
CAUTION
To avoid fouled machinery and extensive unit clean-up,
DO NOT operate units without filters in place. DO NOT
use equipment as a temporary heat source during
construction.
Condensate Drain Pans — Check condensate drain
pans for algae growth twice a year. If algae growth is apparent,
consult a water treatment specialist for proper chemical treatment. Applying an algaecide every three months will typically
eliminate algae problems in most locations.
Refrigerant System — Verify air and water flow rates
FILL CONDENSER WITH
CLEANING SOLUTION. DO
NOT ADD SOLUTION
MORE RAPIDLY THAN
VENT CAN EXHAUST
GASES CAUSED BY
CHEMICAL ACTION.
are at proper levels before servicing. To maintain sealed circuitry integrity, do not install service gages unless unit operation
appears abnormal.
Compressor — Conduct annual amperage checks to en-
sure that amp draw is no more than 10% greater than indicated
on the serial plate data.
Fan Motors — All units have lubricated fan motors. Fan
FUNNEL
1-IN.
(25 mm)
PIPE
VENT
PIPE
motors should never be lubricated unless obvious, dry operation is suspected. Periodic maintenance oiling is NOT recommended as it will result in dirt accumulating in the excess oil
and cause eventual motor failure. Conduct annual dry operation check and amperage check to ensure amp draw is no more
than 10% greater than indicated on serial plate data.
PAIL
1.5 m APPROX
1.0 TO 1.2 m
CONDENSER
Condensate Drain Cleaning — Clean the drain line
and unit drain pan at the start of each cooling season. Check
flow by pouring water into drain. Be sure trap is filled to maintain an air seal.
PAIL
Air Coil Cleaning — Remove dirt and debris from evap-
orator coil as required by condition of the coil. Clean coil with
a stiff brush, vacuum cleaner, or compressed air. Use a fin
comb of the correct tooth spacing when straightening mashed
or bent coil fins.
Fig. 26 — Gravity Flow Method
PUMP
Condenser Cleaning — Water-cooled condensers may
require cleaning of scale (water deposits) due to improperly
maintained closed-loop water systems. Sludge build-up may
need to be cleaned in an open water tower system due to
induced contaminants.
Local water conditions may cause excessive fouling or
pitting of tubes. Condenser tubes should therefore be cleaned at
least once a year, or more often if the water is contaminated.
Proper water treatment can minimize tube fouling and
pitting. If such conditions are anticipated, water treatment
analysis is recommended. Refer to the Carrier System Design
Manual, Part 5, for general water conditioning information.
PRIMING
CONN.
GAS VENT
GLOBE
VALVES
SUCTION
SUPPLY
PUMP
SUPPORT
1-IN.
(25 mm)
PIPE
TANK
CONDENSER
REMOVE WATER
REGULATING VALVE
FINE MESH
SCREEN
RETURN
CAUTION
Fig. 27 — Forced Circulation Method
Follow all safety codes. Wear safety glasses and rubber
gloves when using inhibited hydrochloric acid solution.
Observe and follow acid manufacturer’s instructions.
28
Checking System Charge — Units are shipped with
full operating charge. If recharging is necessary:
1. Insert thermometer bulb in insulating rubber sleeve on
liquid line near filter drier. Use a digital thermometer for
all temperature measurements. DO NOT use a mercury
or dial-type thermometer.
2. Connect pressure gage to discharge line near compressor.
3. After unit conditions have stabilized, read head pressure
on discharge line gage.
NOTE: Operate unit a minimum of 15 minutes before
checking charge.
4. From standard field-supplied Pressure-Temperature chart
for R-410A, find equivalent saturated condensing
temperature.
5. Read liquid line temperature on thermometer; then
subtract from saturated condensing temperature. The difference equals subcooling temperature.
6. Compare the subcooling temperature with the normal
temperature. If the measured liquid line temperature does
not agree with the required liquid line temperature, ADD
refrigerant to raise the temperature or REMOVE refrigerant (using standard practices) to lower the temperature
(allow a tolerance of ± 3° F).
Air Coil Fan Motor Removal
CAUTION
Before attempting to remove fan motors or motor mounts,
place a piece of plywood over evaporator coils to prevent
coil damage.
Disconnect motor power wires from motor terminals before
motor is removed from unit.
1. Shut off unit main power supply.
2. Loosen bolts on mounting bracket so that fan belt can be
removed.
3. Loosen and remove the 2 motor mounting bracket bolts
on left side of bracket.
Slide motor/bracket assembly to extreme right and lift out
through space between fan scroll and side frame. Rest motor on
a high platform such as a step ladder. Do not allow motor to
hang by its power wires.
TROUBLESHOOTING
When troubleshooting problems with a WSHP, consider the
following:
Control Sensors — The control system employs 2 nom-
Refrigerant Charging
inal 10,000 ohm thermistors (FP1 and FP2) that are used for
freeze protection. Be sure FP1 is located in the discharge fluid
and FP2 is located in the air discharge. See Fig. 28.
WARNING
To prevent personal injury, wear safety glasses and gloves
when handling refrigerant. Do not overcharge system —
this can cause compressor flooding.
NOTE: Do not vent or depressurize unit refrigerant to atmosphere. Remove and recover refrigerant following accepted
practices.
AIRFLOW
(°C)
AIR
COIL
SUCTION
AIRFLOW
(°C)
COMPRESSOR
THERMISTOR
EXPANSION
VALVE
FP2
COAX
DISCHARGE
FP1
a50-8163
CONDENSATE
OVERFLOW
(CO)
LIQUID
LINE
AIR COIL
FREEZE
PROTECTION
WATER IN
WATER
COIL
PROTECTION
WATER OUT
LEGEND
COAX — Coaxial Heat Exchanger
Airflow
Refrigerant Liquid Line Flow
Fig. 28 — FP1 and FP2 Thermistor Location
29
a50-8592
Thermistor — A thermistor may be required for singlephase units where starting the unit is a problem due to low
voltage. See Fig. 29 for thermistor nominal resistance.
CAUTION
Use caution when tightening the strap. The strap must be
tight enough to hold the bulb securely but caution must be
taken not to over-tighten the strap, which could dent, bend,
collapse or otherwise damage the bulb.
90.0
80.0
Resistance (kOhm)
70.0
The bulb must be secured to the pipe using a copper strap.
The use of heat transfer paste between the bulb and the pipe
will also help ensure optimum performance.
The bulb must also be properly insulated to eliminate any
influence on valve operation by the surrounding conditions.
Cork tape is the recommended insulation as it can be molded
tight to the bulb to prevent air infiltration.
Causes of TXV Failure — The most common causes of TXV
failure are:
1. A cracked, broken, or damaged sensing bulb or capillary
can be caused by excessive vibration of the capillary during shipping or unit operation.
If the sensing bulb is damaged or if the capillary is
cracked or broken, the valve will be considered failed and
must be replaced. Replacement of the TXV “power head”
or sensing bulb, capillary, diaphragm assembly is possible
on some TXVs. The power head assembly screws onto
most valves, but not all are intended to be replaceable. If
the assembly is not replaceable, replace the entire valve.
2. Particulate debris within the system can be caused by several sources including contaminated components, tubing,
and service tools, or improper techniques used during
brazing operations and component replacement.
Problems associated with particulate debris can be compounded by refrigerant systems that use POE (polyol ester oil). POE oil has solvent-like properties that will clean
the interior surfaces of tubing and components. Particulates can be released from interior surfaces and may migrate to the TXV strainer, which can lead to plugging of
the strainer.
3. Corrosive debris within the system may happen after a
failure, such as a compressor burn out, if system was not
properly cleaned.
4. Noncondensables may be present in the system. Noncondensables includes any substance other than the
refrigerant or oil such as air, nitrogen, or water. Contamination can be the result of improper service techniques,
use of contaminated components, and/or improper evacuation of the system.
Symptoms — The symptoms of a failed TXV can be varied
and will include one or more of the following:
• Low refrigerant suction pressure
• High refrigerant superheat
• High refrigerant subcooling
• TXV and/or low pressure tubing frosting
• Equalizer line condensing and at a lower temperature than
the suction line or the equalizer line frosting
• FP1 faults in the heating mode in combination with any of
the symptoms listed above
• FP2 faults in the cooling mode in combination with any of
the symptoms listed above. Some symptoms can mimic a
failed TXV but may actually be caused be another problem.
Before conducting an analysis for a failed TXV the following must be verified:
• Confirm that there is proper water flow and water temperature in the heating mode.
• Confirm that there is proper airflow and temperature in the
cooling mode.
60.0
50.0
40.0
30.0
20.0
10.0
0.0
-17.7
-6.6
4.4
15.6
26.7
37.8
48.9
60.0
Temperature (C)
Fig. 29 — Thermistor Nominal Resistance
Thermostatic Expansion Valves — Thermostat-
ic expansion valves (TXV) are used as a means of metering the
refrigerant through the evaporator to achieve a preset superheat
at the TXV sensing bulb. Correct superheat of the refrigerant is
important for the most efficient operation of the unit and for the
life of the compressor.
Packaged heat pumps typically use one bi-flow TXV to meter refrigerant in both modes of operation. When diagnosing
possible TXV problems it may be helpful to reverse the refrigerant flow to assist with the diagnosis.
Geothermal and water source heat pumps are designed to operate through a wide range of entering water temperatures that
will have a direct effect on the unit refrigerant operating pressures. Therefore, diagnosing TXV problems can be difficult.
TXV FAILURE — The most common failure mode of a TXV
is when the valve fails while closed. Typically, a TXV uses
spring pressure to close the valve and an opposing pressure,
usually from a diaphragm, to open the valve. The amount of
pressure exerted by the diaphragm will vary, depending on the
pressure inside of the sensing bulb. As the temperature of and
pressure within the bulb decreases, the valve will modulate
closed and restrict the refrigerant flow through the valve. The
result is less refrigerant in the evaporator and an increase in the
superheat. As the temperature at the bulb increases the diaphragm pressure will increase, which opens the valve and
allows more refrigerant flow and a reduction in the superheat.
If the sensing bulb, connecting capillary, or diaphragm
assembly are damaged, pressure is lost and the spring will force
the valve to a closed position. Often, the TXV will not close
completely so some refrigerant flow will remain, even if inadequate flow for the heat pump to operate.
The TXV sensing bulb must be properly located, secured,
and insulated as it will attempt to control the temperature of the
line to which it is connected. The sensing bulb must be located
on a dedicated suction line close to the compressor. On a packaged heat pump, the bulb may be located almost any place on
the tube running from the compressor suction inlet to the
reversing valve. If the bulb is located on a horizontal section, it
should be placed in the 10:00 or 2:00 position for optimal
performance.
30
• Ensure coaxial water coil is clean on the inside; this applies
to the heating mode and may require a scale check.
• Refrigerant may be undercharged. To verify, subcooling and
superheat calculations may be required.
Diagnostics—Several tests may be required to determine if
a TXV has failed. The following tools may be required for
testing:
1. Refrigerant gage manifold compatible with the refrigerant in the system
2. Digital thermometer, preferably insulated, with wire leads
that can be connected directly to the tubing
3. Refrigerant pressure-temperature chart for the refrigerant
used
To determine that a TXV has failed, verify the following:
• The suction pressure is low and the valve is non-responsive.
The TXV sensing bulb can be removed from the suction
line and warmed by holding the bulb in your hand. This
action should result in an increase in the suction pressure
while the compressor is operating. The sensing bulb can
also be chilled by immersion in ice water, which should
result in a decrease in the suction pressure while the
compressor is operating. No change in the suction pressure would indicate a nonresponsive valve.
• Simultaneous LOW suction pressure, HIGH refrigerant
subcooling and HIGH superheat may indicate a failed
valve.
• LOW suction pressure, LOW subcooling and HIGH superheat may indicate an undercharge of refrigerant. HIGH subcooling and LOW superheat may indicate an overcharge of
refrigerant. The suction pressure will usually be normal or
high if there is an overcharge of refrigerant.
• LOW suction pressure and frosting of the valve and/or
equalizer line may indicate a failed valve. However, these
symptoms may also indicate an undercharge of refrigerant.
Calculate the subcooling and superheat to verify a failed
valve or refrigerant charge issue.
Repair
CAUTION
Use caution when tightening the strap. The strap must be
tight enough to hold the bulb securely but caution must be
taken not to over-tighten the strap, which could dent, bend,
collapse or otherwise damage the bulb.
CAUTION
Puron refrigerant (R-410A) requires the use of synthetic
lubricant (POE oil). Do not use common tools on systems
that contain R-22 refrigerants or mineral oil. Contamination and failure of this equipment may result.
IMPORTANT: Always recover the refrigerant from the
system with suitable approved tools, recovery equipment,
and practices prior to attempting to remove or repair any
TXV.
IMPORTANT: Due to the hygroscopic nature of the
POE oil in Puron refrigerant (R-410A) and other environmentally sound refrigerants, any component replacement must be conducted in a timely manner using
caution and proper service procedure for these types of
refrigerants. A complete installation instruction will be
included with each replacement TXV/filter drier assembly. It is of critical importance these instructions are
carefully understood and followed. Failure to follow
these instructions can result in a system that is contaminated with moisture to the extent that several filter drier
replacements may be required to properly dry the
system.
IMPORTANT: Repair of any sealed refrigerant system
requires training in the use of refrigeration tools and procedures. Repair should only be attempted by a qualified service technician. A universal refrigerant handling certificate
will be required. Local and/or state license or certificate
may also be required.
WARNING
Puron® refrigerant (R-410A) operates at higher pressure
than R-22, which is found in other WSHPs. Tools such as
manifold gages must be rated to withstand the higher pressures. Failure to use approved tools may result in a failure
of tools, which can lead to severe damage to the unit, injury
or death.
See Tables 16 and 17 for additional troubleshooting information.
CAUTION
Disconnect power from unit before removing or replacing
connectors, or servicing motor. Wait 5 minutes after disconnecting power before opening motor.
WARNING
Most TXVs are designed for a fixed superheat setting and
are therefore considered non-adjustable. Removal of the
bottom cap will not provide access for adjustment and can
lead to damage to the valve or equipment, unintended venting of refrigerant, personal injury, or possibly death.
Moisture Check — To perform moisture check:
• Check that connectors are orientated “down” (or as recommended by equipment manufacturer).
• Arrange harnesses with “drip loop” under motor.
• Check if condensate drain is plugged.
• Check for low airflow (too much latent capacity).
• Check for undercharged condition.
• Check and plug leaks in return ducts, cabinet.
31
Table 16 — Good Practices
DO
DO NOT
Check motor, controls wiring, and connections thoroughly before replac- Automatically assume the motor is bad.
ing motor.
Orient connectors down so water cannot get in. Install “drip loops.”
Locate connectors above 7 and 4 o’clock positions.
Use authorized motor and control model numbers for replacement.
Replace one motor or control model number with another (unless
replacement is authorized).
Keep static pressure to a minimum by:
Use high pressure drop filters.
• Using high efficiency, low-static filters.
Use restricted returns.
• Keeping filters clean.
• Designing ductwork for minimum static and maximum comfort.
• Improving ductwork when replacement is necessary.
Size equipment wisely.
Oversize system then compensate with low airflow.
Check orientation before inserting motor connectors.
Plug in power connector backwards.
Force plugs.
Table 17 — WSHP Troubleshooting
FAULT
Main Power Problems
HEATING
X
HP Fault — Code 2
High Pressure
COOLING
POSSIBLE CAUSE
X
Green Status LED Off
X
X
X
X
LP/LOC Fault — Code 3
Low Pressure/Loss of
Charge
FP1 Fault — Code 4
Water Freeze Protection
X
X
X
X
X
X
X
X
X
X
X
X
FP2 Fault — Code 5
Air Coil Freeze Protection
X
X
X
X
Condensate Fault —
Code 6
X
X
X
X
X
X
X
X
LED
RV
TXV
SOLUTION
Check line voltage circuit breaker and disconnect.
Check for line voltage between L1 and L2 on the contactor.
Check for 24 vac between R and C on controller.
Check primary/secondary voltage on transformer.
Reduced or no water flow in cool- Check pump operation or valve operation/setting.
ing
Check water flow adjust to proper flow rate.
Water temperature out of range in Bring water temperature within design parameters.
cooling
Reduced or no airflow in
Check for dirty air filter and clean or replace.
heating
Check fan motor operation and airflow restrictions.
Dirty air coil — construction dust etc.
External static too high. Check blower performance per
Table 7.
Air temperature out of range
Bring return-air temperature within design parameters.
in heating
Overcharged with refrigerant
Check superheat/subcooling vs typical operating condition.
Bad HP switch
Check switch continuity and operation. Replace.
Insufficient charge
Check for refrigerant leaks.
Compressor pump down at start- Check charge and start-up water flow.
up
Reduced or no water flow
Check pump operation or water valve operation/setting.
in heating
Plugged strainer or filter. Clean or replace.
Check water flow adjust to proper flow rate.
Inadequate antifreeze level
Check antifreeze density with hydrometer.
Improper freeze protect setting
Clip JW2 jumper for antifreeze (–12.3 C) use.
(–1.1 C vs –12.3 C)
Water temperature out of range
Bring water temperature within design parameters.
Bad thermistor
Check temperature and impedance correlation.
Reduced or no airflow in
Check for dirty air filter and clean or replace.
cooling
Check fan motor operation and airflow restrictions.
External static too high. Check blower performance per
Table 7.
Air temperature out of range
Too much cold vent air. Bring entering air temperature within design
parameters.
Improper freeze protect setting
Normal airside applications will require –1.1 C only.
(–1.1 C vs –12.3 C)
Bad thermistor
Check temperature and impedance correlation.
Blocked drain
Check for blockage and clean drain.
Improper trap
Check trap dimensions and location ahead of vent.
Poor drainage
Check for piping slope away from unit.
Check slope of unit toward outlet.
Poor venting. Check vent location.
Moisture on sensor
Check for moisture shorting to air coil.
LEGEND
— Light-Emitting Diode
— Reversing Valve
— Thermostatic Expansion Valve
32
Table 17 — WSHP Troubleshooting (cont)
FAULT
Over/Under Voltage —
Code 7 (Auto Resetting)
HEATING
X
X
Performance Monitor —
Code 8
X
FP1 and FP2 Thermistors
— Code 9
X
COOLING
POSSIBLE CAUSE
X
Under voltage
X
X
X
X
X
X
X
X
X
Heating mode FP2>52 C
Cooling mode FP1>52 C OR
FP2< 4 C
FP1 temperature is higher
than FP2 temperature.
FP2 temperature is higher
than FP1 temperature.
No compressor operation
Compressor overload
Control board
FP1 and FP2 swapped
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Dirty air filter
Unit in 'Test Mode'
Unit selection
Compressor overload
Thermostat position
Unit locked out
Compressor overload
Thermostat wiring
X
X
Thermostat wiring
X
X
Fan motor relay
X
X
X
Fan motor
Reversing valve
X
X
X
Thermostat setup
Thermostat wiring
Dirty filter
Reduced or no airflow in
heating
X
Reduced or no airflow in
cooling
X
X
Leaky ductwork
X
X
X
X
X
Low refrigerant charge
Restricted metering device
Defective reversing valve
X
X
X
X
Thermostat improperly located
Unit undersized
X
X
X
X
X
X
Scaling in water heat exchanger
Inlet water too hot or cold
Too high airflow
Poor performance
X
X
No Fault Code Shown
Swapped Thermistor —
Code 9
Unit Short Cycles
Only Fan Runs
Only Compressor Runs
Unit Does Not Operate in
Cooling
Insufficient Capacity/
Not Cooling or Heating
Properly
Low Discharge Air
Temperature in Heating
LED
RV
TXV
Over voltage
X
X
LEGEND
— Light-Emitting Diode
— Reversing Valve
— Thermostatic Expansion Valve
33
SOLUTION
Check power supply and 24 vac voltage before and during
operation.
Check power supply wire size.
Check compressor starting.
Check 24 vac and unit transformer tap for correct power supply
voltage.
Check power supply voltage and 24 vac before and during operation.
Check 24 vac and unit transformer tap for correct power supply
voltage.
Check for poor airflow or overcharged unit.
Check for poor water flow or airflow.
Swap FP1 and FP2 thermistors.
Swap FP1 and FP2 thermistors.
See Scroll Compressor Rotation section.
Check and replace if necessary.
Reset power and check operation.
Reverse position of thermistors.
Check and clean air filter.
Reset power or wait 20 minutes for auto exit.
Unit may be oversized for space. Check sizing for actual load of space.
Check and replace if necessary.
Ensure thermostat set for heating or cooling operation.
Check for lockout codes. Reset power.
Check compressor overload. Replace if necessary.
Check Y and W wiring at heat pump. Jumper Y and R for compressor
operation in Test mode.
Check G wiring at heat pump. Jumper G and R for fan operation.
Check Y and W wiring at heat pump. Jumper Y and R for compressor
operation in test mode.
Jumper G and R for fan operation. Check for line voltage across BR
contacts.
Check fan power enable relay operation (if present).
Check for line voltage at motor. Check capacitor.
Set for cooling demand and check 24 vac on RV coil and at control.
If RV is stuck, run high pressure up by reducing water flow and while
operating, engage and disengage RV coil voltage to push valve.
Check for 'O' RV setup not 'B'.
Check O wiring at heat pump. Jumper O and R for RV coil 'Click'.
Replace or clean.
Check for dirty air filter and clean or replace.
Check fan motor operation and airflow restrictions.
External static too high. Check blower performance per
Table 7.
Check for dirty air filter and clean or replace.
Check fan motor operation and airflow restrictions.
External static too high. Check blower performance per
Table 7.
Check supply and return air temperatures at the unit and at distant duct
registers if significantly different, duct leaks are present.
Check superheat and subcooling.
Check superheat and subcooling. Replace.
Set for cooling demand and check 24 vac on RV coil and at control.
If RV is stuck, run high pressure up by reducing water flow and while
operating, engage and disengage RV coil voltage to push valve.
Check location and for air drafts behind thermostat.
Recheck loads and sizing check sensible cooling load and heat pump
capacity.
Perform condenser cleaning.
Check load, loop sizing, loop backfill, ground moisture.
Check blower performance per Table 7.
See “Insufficient Capacity.”
Table 17 — WSHP Troubleshooting (cont)
FAULT
HEATING COOLING
High Head Pressure
X
X
X
X
Low Suction Pressure
X
X
X
X
X
X
X
X
X
X
X
X
High Humidity
Low Refrigerant Suction
Pressure
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
High Refrigerant
Subcooling
X
X
X
X
TXV and/or Low Pressure
Tubing Frosting
X
X
X
X
X
Equalizer Line
Condensing or Frosting
X
X
High Refrigerant
Superheat
LED
RV
TXV
SOLUTION
Check for dirty air filter and clean or replace.
Check fan motor operation and airflow restrictions.
External static too high. Check blower performance per
Table 7.
Reduced or no water flow in cool- Check pump operation or valve operation/setting.
ing
Check water flow adjust to proper flow rate. See Tables 9 and 10.
Inlet water too hot
Check load, loop sizing, loop backfill, ground moisture.
Air temperature out of range in
Bring return-air temperature within design parameters.
heating
Scaling in water heat exchanger Perform condenser cleaning.
Unit overcharged
Check superheat and subcooling. Reweigh in charge.
Noncondensables in system
Remove refrigerant, evacuate system and charge unit.
Restricted metering device
Check superheat and subcooling. Replace.
Reduced water flow in
Check pump operation or water valve operation/setting.
heating
Plugged strainer or filter. Clean or replace.
Check water flow adjust to proper flow rate.
Water temperature out of range
Bring water temperature within design parameters.
Reduced airflow in cooling
Check for dirty air filter and clean or replace.
Check fan motor operation and airflow restrictions.
External static too high. Check blower performance per
Table 7.
Air temperature out of range
Too much cold vent air. Bring entering air temperature within design
parameters.
Insufficient charge
Check for refrigerant leaks.
Too high airflow
Check blower performance per Table 7.
Unit oversized
Recheck loads and sizing check sensible cooling load and heat pump
capacity.
Normal operation
Reduced water flow
X
X
X
POSSIBLE CAUSE
Reduced or no airflow in
heating
Check/compare with operating limits and normal flow.
Check pump operation.
Check strainer or filter.
Improper flow regulator. Replace flow regulator.
Water temperature out of range Bring water temperature within proper range.
Scaling in water to refrigerant Conduct water quality analysis.
heat exchanger
Reduced airflow
Check for dirty air filter.
Check for dirty air coil.
Check fan motor operation.
External static pressure exceeds fan operating parameters.
Return air temperature below Space temperature too cold. Increase space temperature.
minimum
Excessive fresh air. Reduce amount of fresh air exposure.
Supply air bypassing to return Check for leaking ductwork.
airstream (zone systems)
Insufficient refrigerant charge Locate and repair leak.
Improperly located TXV sens- Locate bulb on suction line between reversing valve and compressor.
ing bulb
Failed or restricted metering
Failed TXV power head, capillary or sensing bulb. Replace.
device
Plugged TXV strainer. Unplug TXV strainer.
Insufficient refrigerant charge Locate and repair leak.
Improperly located TXV sens- Locate bulb on suction line between reversing valve and compressor.
ing bulb
Failed or restricted metering
Failed TXV power head, capillary or sensing bulb. Replace.
device
Plugged TXV strainer. Unplug TXV strainer.
Excessive refrigerant charge
Remove refrigerant as needed.
Failed or restricted metering
Failed TXV power head, capillary or sensing bulb. Replace.
device
Plugged TXV strainer. Unplug TXV strainer.
Normal operation
May occur when entering water temperature is close to minimum.
Insufficient refrigerant charge Locate and repair leak.
Failed or restricted metering
Failed TXV power head, capillary or sensing bulb. Replace.
device
Plugged TXV strainer. Unplug TXV strainer.
Failed or restricted metering
Failed TXV power head, capillary or sensing bulb. Replace.
device
Plugged TXV strainer. Unplug TXV strainer.
LEGEND
— Light-Emitting Diode
— Reversing Valve
— Thermostatic Expansion Valve
Copyright 2010 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500074-01
Printed in U.S.A.
Form 50PS-C1SI
Pg 34
10-10
Replaces: New
50PSH,PSV,PSD
START-UP CHECKLIST
CUSTOMER:___________________________
JOB NAME: _______________________________________
MODEL NO.:___________________________
SERIAL NO.:____________________
DATE:_________
I. PRE-START-UP
DOES THE UNIT VOLTAGE CORRESPOND WITH THE SUPPLY VOLTAGE AVAILABLE? (Y/N)
HAVE THE POWER AND CONTROL WIRING CONNECTIONS BEEN MADE AND TERMINALS
TIGHT? (Y/N)
HAVE WATER CONNECTIONS BEEN MADE AND IS FLUID AVAILABLE AT HEAT EXCHANGER?
(Y/N)
HAS PUMP BEEN TURNED ON AND ARE ISOLATION VALVES OPEN? (Y/N)
HAS CONDENSATE CONNECTION BEEN MADE AND IS A TRAP INSTALLED? (Y/N)
IS AN AIR FILTER INSTALLED? (Y/N)
II. START-UP
IS FAN OPERATING WHEN COMPRESSOR OPERATES? (Y/N)
IF 3-PHASE SCROLL COMPRESSOR IS PRESENT, VERIFY PROPER ROTATION PER INSTRUCTIONS.
(Y/N)
UNIT VOLTAGE — COOLING OPERATION
PHASE AB VOLTS
PHASE BC VOLTS
(if 3 phase)
PHASE CA VOLTS
(if 3 phase)
PHASE AB AMPS
PHASE BC AMPS
(if 3 phase)
PHASE CA AMPS
(if 3 phase)
CONTROL VOLTAGE
IS CONTROL VOLTAGE ABOVE 21.6 VOLTS? (Y/N)
.
IF NOT, CHECK FOR PROPER TRANSFORMER CONNECTION.
TEMPERATURES
FILL IN THE ANALYSIS CHART ATTACHED.
COAXIAL HEAT COOLING CYCLE:
EXCHANGER
FLUID IN
C FLUID OUT
C
KPA
FLOW
HEATING CYCLE:
FLUID IN
C FLUID OUT
C
KPA
FLOW
COOLING CYCLE:
AIR IN
C
AIR OUT
C
HEATING CYCLE:
AIR IN
C
AIR OUT
C
AIR COIL
CL-1
kPa
DEW
POINT
°C
a50-8494
AIR
COIL
SUCTION
°C
°C
COMPRESSOR
EXPANSION
VALVE
COAX
DISCHARGE
°C
°C
LIQUID LINE
kPa
WATER IN
°C
kPa
WATER OUT
LOOK
UPUP
PRESSURE
DROP
ININ
TABLE
9 8
LOOK
PRESSURE
DROP
TABLE
TOTO
DETERMINE
FLOW
RATE
DETERMINE
FLOW
RATE
COOLING CYCLE ANALYSIS
kPa
DEW
POINT
°C
AIR
COIL
°C
SUCTION
°C
COMPRESSOR
EXPANSION
VALVE
COAX
DISCHARGE
°C
LIQUID LINE
°C
kPa
WATER IN
a50-8495
°C
kPa
WATER OUT
LOOK
UPUP
PRESSURE
DROP
ININ
TABLE
9 8
LOOK
PRESSURE
DROP
TABLE
TOTO
DETERMINE
FLOW
RATE
DETERMINE
FLOW
RATE
HEAT OF EXTRACTION (ABSORPTION) OR HEAT OF REJECTION =
FLOW RATE (L/s) x
TEMP. DIFF. (DEG. C) x
FLUID FACTOR* =
(kW)
SUPERHEAT = SUCTION TEMPERATURE – SUCTION SATURATION TEMPERATURE
(DEG C)
=
SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE
(DEG C)
=
*Use 500 for water, 485 for antifreeze.
Copyright 2010 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500074-01
Printed in U.S.A.
Form 50PS-C1SI
Pg CL-2
4-11A
10-10
Replaces: New
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - CUT ALONG DOTTED LINE
CUT ALONG DOTTED LINE
HEATING CYCLE ANALYSIS
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