Bryant 50YEW User manual

GT-PW (50YEW)
Water-To-Water Series
WATER-TO-WATER PURON®SYSTEMS
SIZE 010 [10 kW]
Revised May 8, 2013

50YEW
2
50YEWWater-To-Water Series
Bryant:Whatever ItTakes.
Table of Contents
Unit Features............................................................................................3
Model Key..................................................................................................5
Rated Equipment Performance & Efficiencies.......................6
Performance Data.................................................................................7
Physical Data............................................................................................9
Dimensions.............................................................................................10
Electrical Data.......................................................................................11
Wiring Diagrams.................................................................................12
Engineering Guide Specifications...............................................20
Accessories & Options....................................................................21
Warranty Information......................................................................21
Revision History..................................................................................22

Bryant Geothermal Heat Pump Systems
50YEW
3
Residential ProductsTechnical Guide
50YEWWater-To-Water Design Features
The 50YEW series is unlike any other water-to-water heat pump on
the market today. The large operating map of the scroll compressor
allows high temperature operation,up to 145°F [63°C] leaving
load water temperature even at 32°F [0°C] entering source water
temperature. The combination of a coaxial (tube-in-tube) heat
exchanger for the source (ground loop) side and a brazed plate
heat exchanger for the load (heating/hot water) side provides very
high efficiencies. Integral controls for hydronic heating and domestic
water heating avoid the need for external microprocessor-based
controls for outdoor temperature reset, warm weather shutdown,
staging and other controls.
The 50YEW has an extended range refrigeration circuit, capable of
ground loop (geothermal) applications as well as open loop (well
water) applications. Standard features and factory-installed options
are many. Unique application-specific controls make the 50YEW
series ideal for hydronic heating and domestic hot water generation.
The heating-only refrigeration circuit is optimized for high water
temperatures, heating efficiencies, and capacities.
The dual level compressor isolation mounting system,insulated
compressor enclosure,and compressor discharge muffler make
the 50YEW series one of the quietest water-to-water heat pumps
available. The attractive“Euro-style”cabinet allows the unit to fit into
any decor.
Application Flexibility
• Capacities 10kW [32,600 Btuh].
• High temperature scroll compressor,up to 145°F [63°C] leaving
water temperature.
• Ultra high efficiencies (4.2 COP at ground loop conditions;up to
5.5 COP at ground water conditions).
• Built-in programmable controller with OutdoorTemperature Reset
andWarmWeather Shutdown.
• Large,back-lit digital user interface.
• Rugged coaxial (tube-in-tube)“Source”heat exchanger (copper or
cupronickel).
• Close approach temperature brazed plate stainless steel“Load”
heat exchanger.
• Dual level compressor isolation,compressor enclosure, and
discharge muffler for Ultra quiet operation.
• “Euro-style”cabinet for attractive look.
• Insulated cabinet with foil backed insulation for ease of cleaning.
• Flush-mount FPT fittings,secured to the cabinet (no backup
wrench required).
• TXV metering device.
• 12-point low voltage terminal strip for ease of installation.
• ETL safety listing.
• Wide variety of options including internally factory installed
Domestic HotWater Mode, Load and Source side pumps with
expansion tanks,VSFP (variable speed floor pump connection)
Controls and Cupro-Nickel Source Heat Exchanger.
Service & Installation Advantages
• Hinged front access door and 3 removable panels for ease
of installation and service.
• Galvanized steel construction with protective powder coat paint
and hinged front access door.
• Bi-directional thermal expansion valve.
• Puron®HFC-410A zero ozone depletion refrigerant.
• Circuit breaker protected 75VA control transformer.
• High and low pressure service ports on refrigerant circuit.
• Accurate refrigerant sensing freeze protection.
Factory Quality & Certifications
• All units are built on our Integrated Process Control Assembly
System (IPCS).The IPCS is a unique state of the art manufacturing
system that is designed to assure quality of the highest standards of
any manufacturer in the water-source industry.Our IPCS system:
a.Verifies that the correct components are being assembled.
b.Automatically performs special leak tests on all joints.
c. Conducts pressure tests.
d.Performs highly detailed run test unparalleled in the
HVAC industry.
e.Automatically disables packaging for a“failed”unit.
f.Creates computer database for future service analysis and
diagnostics from run test results.
• All units are water run-tested in all modes to insure efficiency
and reliability.
• Heavy gauge galvanized steel cabinets are epoxy powder coated
for durable and long-lasting finish.
• All refrigerant brazing is done in a nitrogen atmosphere.
• All units are deep evacuated to less than 100 microns prior to
refrigerant charging.
• All joints are both helium and halogen leak tested to insure annual
leak rate of less than 1/4 ounce.
• Coaxial heat exchanger,refrigerant suction lines and all water
lines are fully insulated to eliminate condensation problems in low
temperature applications.
• Noise Reduction features include:dual level compressor isolation,
insulated compressor compartment,interior cabinet insulation
using 1/2”coated glass fiber, and variable speed fan.
• Safety features include:high pressure and loss of charge to
protect the compressor, condensate overflow protection,freeze
protection sensors to safeguard the coaxial heat exchanger
and air coil,hot water high-limit and low compressor discharge
temperature switch provided to shut down the hot water
generator when conditions dictate. Fault lockout enables
emergency heat and prevents compressor operation until
thermostat or circuit breaker has been reset.
• 10-year limited warranty on major refrigerant circuit components,
Optional extended warranties available.
• AHRI/ASHRAE/ANSI/ISO 13256-2 certified.
• NRTL & CSA listed.
• US EPA“Energy Star”compliant.
• ISO 9001:2000 Certified.
Options & Accessories
• Full Condensing HotWater GenerationWith Internal Secondary
Heat Exchanger and PotableWater Circulating Pump.
• Factory Installed“Load”and“Source”Pumps.
• Factory Installed ExpansionTanks.
• Cupro-Nickel SourceWater Coil.
• Extended LaborAllowance and ServiceWarranty.

50YEW
4
50YEWWater-To-Water Series
Bryant:Whatever ItTakes.
50YEWWater-To-Water Series Features
Hinged Front Access Door andThree
Removable Panels For Ease of Installation
and Service
13
Large Backlight User Interface
10
Dual level compressor isolation and discharge
muffler for ultra quiet operation
12
Fully Insulated Compressor Section
8
Built-In Programmable Controller With
Outdoor Temperature Reset and Warm
Weather Shutdown
11
Powder Coated Galvanized Steel Cabinet
and Front Access Panel For Long Life,
Taupe Metallic
9
Fully InsulatedWater and
Refrigerant Lines
7
Optional Full Condensing HotWater
GenerationWith Internal Secondary
Heat Exchanger and PotableWater
Circulating Pump
5
HighTemperature Scroll Compressor
2
Euro-Style Cabinet For Attractive Look
1
Rugged Coaxial“Source”Heat Exchanger
3
Close Approach Temperature Brazed Plate
Stainless Steel “Load” Heat Exchanger
4
12-PointTerminal Strip For Ease of Low
VoltageWiring
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Optional Factory Installed “Load” and
“Source” Pumps with expansion tanks
6

Bryant Geothermal Heat Pump Systems
50YEW
5
Residential ProductsTechnical Guide
Model Key
Y E W
Water Coil & DHW Options
YEW = Puron High Temperature
Heating Only Water-to-Water
Hydronic Options
A = No Pump
B = Load Pump w/Expansion Tank
C = Load Pump & Source Pump(s)
w/Expansion Tanks
C = Copper Source & Braze Plate Load, No DHW
W = CXM
Y = CXM w/VSFP
50 A0 1 0 CW 3 1 1
4 5 6 7
8
9101112
Unit Size Voltage
Controls
1 = Single Pack, Domestic
Packaging
1= Current
Revision Level
1 2 3
Residential Series
010 (10kW)
Prefix
3 = 208-230/60/1
D = Copper Source & Braze Plate Load, DHW w/Sec. hx & pump*
N = Cupro-Nickel Source & Braze Plate Load, No DHW
P = Cupro-Nickel Source & Braze Plate Load, DHW w/Sec. hx & pump*
*When digit 9 = “D” or “P,” digit 7 cannot be “A.”