Carrier Aquazone 50RHE 006 Manual

Carrierisparticipatingin
theEuroventCertification
Programme.Productsare
as listed in the Eurovent
DirectoryofCertified
Products.
50RHE 006-060
Water-Source Heat Pumps -
Horizontal Units
Installation,OperationandMaintenanceInstructions
TM

2
CONTENTS
1-SAFETYCONSIDERATIONS ............................................................................................................................................................. 3
2-GENERAL.............................................................................................................................................................................................. 3
3-INSTALLATION ................................................................................................................................................................................... 3
3.1 - Check jobsite........................................................................................................................................................................................ 3
3.2 - Check unit ............................................................................................................................................................................................ 3
3.3 - Unit location......................................................................................................................................................................................... 7
3.4 - Mounting the unit................................................................................................................................................................................. 8
3.5 - Duct system.......................................................................................................................................................................................... 8
3.6 - Condensate drain.................................................................................................................................................................................. 8
3.7 - Piping connections ............................................................................................................................................................................... 9
3.8 - Electrical wiring ................................................................................................................................................................................. 10
3.9 - Low voltage wiring ............................................................................................................................................................................ 17
4-PRE-START-UP .................................................................................................................................................................................. 18
4.1 - System checkout ................................................................................................................................................................................ 18
5-FIELDSELECTABLEINPUTS ......................................................................................................................................................... 18
5.1 - Complete C control jumper settings .................................................................................................................................................. 18
5.2 - Complete C control DIP switches ...................................................................................................................................................... 18
5.3 - Deluxe D control jumper settings ...................................................................................................................................................... 18
5.4 - Deluxe D control DIP switches.......................................................................................................................................................... 19
5.5 - Deluxe D control accessory relay configurations .............................................................................................................................. 19
5.6 - Water valve (slow opening) ............................................................................................................................................................... 20
5.7 - Outdoor air damper (OAD) ................................................................................................................................................................ 20
6 - START-UP ........................................................................................................................................................................................... 20
6.1 - Operating limits.................................................................................................................................................................................. 20
6.2 - Scroll compressor rotation ................................................................................................................................................................. 21
6.3 - Unit start-up cooling mode ................................................................................................................................................................ 21
6.4 - Unit start-up heating mode................................................................................................................................................................. 21
6.5 - Flow regulation .................................................................................................................................................................................. 21
6.6 - Flushing.............................................................................................................................................................................................. 22
6.7 - Anti-freeze.......................................................................................................................................................................................... 23
6.8 - Cooling tower/boiler systems ............................................................................................................................................................ 23
6.9 - Ground coupled, closed loop and plateframe heat exchanger well systems...................................................................................... 23
7-OPERATION........................................................................................................................................................................................ 24
7.1 - Power up mode................................................................................................................................................................................... 24
7.2 - Units with Aquazone Complete C control ......................................................................................................................................... 24
7.3 - Units with Aquazone Deluxe D control............................................................................................................................................. 24
8- SYSTEMTEST .................................................................................................................................................................................... 25
8.1 - Test mode ........................................................................................................................................................................................... 25
8.2 - Retry mode ......................................................................................................................................................................................... 25
8.3 - Aquazone Deluxe D control LED indicators ..................................................................................................................................... 25
9-SERVICE.............................................................................................................................................................................................. 26
9.1 - Filters.................................................................................................................................................................................................. 26
9.2 - Water coil ........................................................................................................................................................................................... 26
9.3 - Condensate drain pans ....................................................................................................................................................................... 26
9.4 - Refrigerant system ............................................................................................................................................................................. 27
9.5 - Condensate drain cleaning ................................................................................................................................................................. 27
9.6 - Air coil cleaning................................................................................................................................................................................. 27
9.7 - Condenser cleaning ............................................................................................................................................................................ 27
9.8 - Checking system charge .................................................................................................................................................................... 27
9.9 - Refrigerant charging .......................................................................................................................................................................... 28
9.10 - Air coil fan motor removal............................................................................................................................................................... 28
10-TROUBLESHOOTING ..................................................................................................................................................................... 28
10.1 - Thermistor ........................................................................................................................................................................................ 28
10.2 - Control sensors................................................................................................................................................................................. 28
11-START-UPCHECKLIST-50RHER-407CUNIT ......................................................................................................................... 32

3
1 - 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 of
cleaning coils and filters and replacing filters.All other opera-
tions 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 other con-
ditions which may cause personal injury or property damage.
Consult a qualified installer, service agency, or your distributor
or branch for information or assistance. The qualified installer
or agency must use factory-authorized kits or accessories when
modifying this product. Refer to the 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 electrical codes for special installation requirements.
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.
2 - GENERAL
Water-source heat pump units are single-package horizontal
mounted units with electronic controls designed for year-round
cooling and heating. Aquazone 50RHE water-source heat pump
units are designed for high-efficiency operation using HFC-407C
refrigerant.
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.
3 - INSTALLATION
3.1 - 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.
Horizontal units are designed for indoor installation only. Be sure
to allow adequate space around the unit for servicing. See Fig. 1
for overall unit dimensions. Refer to Fig. 2 for an illustration of
a typical horizontal 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 become clogged with construction dirt and debris
which may cause system damage.
3.2 - Check unit
Upon receipt of shipment at the jobsite, carefully check the ship-
ment 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.
NOTE: It is the responsibility of the purchaser to file all
necessary claims with the shipping company.
1. Verify unit is correct model for entering water temperature
of job.
2. Be sure that the location chosen for unit installation provides
ambient temperatures maintained above freezing. Well
water applications are especially susceptible to freezing.
3. Be sure the installation location is isolated from sleeping
areas, private offices and other acoustically sensitive spaces.
NOTE: A sound control accessory package may be used to
help eliminate sound in sensitive spaces.
4. Check local codes to be sure a secondary drain pan is not
required under the unit.
5. 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.
6. Provide sufficient space for duct connection.
7. Provide adequate clearance for filter replacement and drain
pan cleaning. Do not allow piping, conduit, etc. to block
filter access.
8. 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.
9. Provide an unobstructed path to the unit within the closet
or mechanical room. Space should be sufficient to allow
removal of unit if necessary.

4
10. Provide ready access to water valves and fittings, and screw-
driver access to unit side panels, discharge collar, and all
electrical connections.
11. Where access to side panels is limited, pre-removal of the
control box side mounting screws may be necessary for
future servicing.
3.2.1 - Storage
If the equipment is not needed immediately at the jobsite, it
should be left in its shipping carton and stored in a clean, dry area
of the building or in a warehouse. Units must be stored in an
upright position at all times. If carton stacking is necessary, stack
units a maximum of three high. Do not remove any equipment
from its shipping package until it is needed for installation.
3.2.2 - 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 com-
plete. 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.
CAUTION: DO NOT store or install units in corrosive environ-
ments or in locations subject to temperature or humidity
extremes (e.g., attics, garages, rooftops, etc.). Corrosive con-
ditions 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.
3.2.3 - 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. Verify that the unit is the correct model for the entering
water temperature of the job.
3. Do not remove the packaging until the unit is ready for
installation.
4. Verify that the refrigerant tubing is free of kinks or dents,
and that it does not touch other unit components.
5. Inspect all electrical connections. Be sure connections are
clean and tight at the terminals.
6. Compressors are internally isolated. Compressors equipped
with external spring vibration isolators must have bolts
loosened and shipping clamps removed.
7. Remove any blower support cardboard from inlet of the
blower.
8. Locate and verify any accessory kit located in compressor
section.
9. Remove any access panel screws that may be difficult to
remove once unit is installed.
Table 1 - Physical data
50RHE 006 009 012 015 019 024 030 036 042 048 060
Cooling capacity* kW 1.5 2.1 2.5 3.9 4.9 5.7 6.4 8.0 9.9 11.4 13.7
Cooling COP W/W 3.3 4.0 3.1 4.6 3.3 3.4 3.3 3.3 3.7 3.6 3.4
Heating capacity** kW 1.8 2.4 3.4 3.8 6.1 7.0 7.9 10.6 11.3 14.3 16.8
Heating COP W/W 3.9 4.2 3.7 4.7 4.0 4.0 4.0 4.0 4.4 4.1 4.3
Pressure drop kPa 6.8 9.9 34.3 27.0 19.1 23.7 13.9 12.2 16.3 22.3 32.5
Liquid flow rate l/s 0.07 0.11 0.15 0.16 0.22 0.28 0.35 0.43 0.50 0.57 0.71
Compressor One … rotary One … reciprocating One … scroll
Refrigerant charge R-407C kg 0.34 0.37 0.37 0.68 0.88 0.91 1.19 1.36 1.19 1.59 2.41
Fan motor and blower PSC type, 3 speeds
Fan motor power input W 30 75 75 124 150 250 373 560 560 560 746
Blower wheel size (D x W) mm 127 x 127 127 x 127 152 x 127 152 x 127 152 x 127 152 x 127 152 x 127 254 x 254 254 x 254 254 x 254 279 x 254
Air flow l/s 81 113 140 212 264 307 349 437 530 630 790
Water connection size (FPT) in 1/2 1/2 1/2 3/4 3/4 3/4 3/4 3/4 1 1 1
Horizontal air heat exchanger
Dimensions (H x W) mm 254 x 406 254 x 406 254 x 406 406 x 406 406 x 406 406 x 406 457 x 559 457 x 559 457 x 787 457 x 787 508 x 889
Total face area m20.103 0.103 0.103 0.165 0.165 0.165 0.255 0.255 0.360 0.360 0.452
Tube size mm 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5
Fin spacing mm 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.7
Number of rows 223333333 34
Filter 25 mm throwaway
Qty - size mm 1 - 254 x 508 1 - 406 x 508 1 - 457 x 610 2 - 457 x 457 1 - 305 x 508
1 - 635 x 508
Operating weight kg 50.0 50.9 55.0 66.8 76.8 87.7 99.5 104.1 116.8 121.4 146.8
Packaged weight kg 54.5 55.5 59.5 71.4 81.4 92.3 105.0 109.5 122.3 126.8 153.6
PSC – Permanent split capacitor
*Basedon Eurovent conditions: 27°C dry bulb,19°C wet bulb entering air temperature and30°Centering watertemperature.
** Heatingcapacities based upon 20°C dry bulb, 15°Cwet bulb enteringairtemperature and 20°C entering water temperature.
Notes:
1. All ratings based upon operation at lower voltage of dual voltage rated models.
2. All air flow is rated on high speed.
3. A water-to-air heat pump using water or brine circulating in a common piping loop functioning as a heat source/heat sink.
4. The temperature of the water or brine loop is usually mechanically controlled within a temperature range of 15.6°C to 35°C.

5
Fig. 1 - Dimensions
50RHE 006-012 015-024 030 036 042-048 060
Overall cabinet mm
A(width) 568 568 568 568 568 645
B(depth) 1095 1095 1351 1351 1580 1808
C(height) 287 439 490 490 490 541
Water connections mm
E (waterout) 137 124 137 137 137 137
Electrical knockouts mm
J (1/2 conduit) low voltage 89 89 145 145 145 206
K (1/2 conduit) ext.pump 140 191 246 246 246 297
L(3/4 conduit) powersupply 208 259 310 310 310 361
Discharge connection mm
(duct flange installed ±2.5 mm)
M147 127 127 74 74 147
N102 142 173 97 97 127
O(supplyheight) 147 264 264 343 343 345
P(supplydepth) 203 236 236 333 333 338
Q147 127 127 74 74 147
R383853484874
Return connection mm
(using return air opening)
S(return depth) 434 434 587 587 815 917
T(return height) 236 389 439 439 439 490
Notes:
1. Condensateis3/4-in. FPT copper.
2. Horizontal unit shipped with filter bracket only. This bracket should be removed for return duct connection.
3. Hangerkit is factory-installed. Isolation grommets areprovided.
4. Right and left orientation is determined by looking at water connection side (front).
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B
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27.9
C
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T
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B
X
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5
Leftreturn
610 mm
service
access* Front CSP Optional
610 mm
service
access*
Leftreturn
ASP
Right
discharge
Back
discharge Condensate
3/4” FPT
Powersupply
3/4”knockout
1/2”knockout
Lowvoltage
1/2”knockout CAP
Frontview
82.5 mm
Rightreturn
Rightreturn
Condensate
3/4” FPT Back
discharge
Left
discharge
CSP
Optional 610 mm
serviceaccess*
610 mm
service
access*
Front
82.5 mm
Unithanger detail
Front
50RHE X Y Z
006-024 1095 619 518
030-036 1349 619 518
042-048 1577 619 518
060 1806 695 594
BSP Blower
outlet
Air coil side
Leftreturn backdischarge
BSP
Blower
outlet
Air coil side
Rightreturn backdischarge
ASP
Front
Blower
outlet
Leftreturn rightdischarge
BSP CSP
Front
Blower
outlet
Rightreturn rightdischarge
BSP
Air coil
Air coil
CSP ASP
Front
Left return left view - air coil opening
Front
*Shadedareas are recommended serviceareas,not required.
Right return left view - air coil opening
Legend
CAP - control access panel
CSP - compressor service panel
BSP - blower service panel
ASP - alternate service panel
F