Hubbell Water Heaters -Model PBX Heat Pump Water Heater (HPWH)

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The Hubbell Model PBX water heater incorporates a number of features not found in other conventional heaters which makes it better suited to resist the highly corrosive effects of hot water.

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Hubbell Water Heaters
45 Seymour Street
P.O. Box 288
Stratford, CT 06615
Tel: (203) 378-2659
Fax: (203) 378-3593

info@hubbellheaters.com

http://www.hubbellheaters.com/

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Overview


Model PBX Heat Pump Water Heater (HPWH)

The Hubbell Model PBX water heater incorporates a number of features not found in other conventional heaters which makes it better suited to resist the highly corrosive effects of hot water. The heart of a Hubbell water heater is a superior storage vessell which utilizes a specially formulated Hydrastone cement lining, solid copper-silicon threaded tank openings and a built-in heat trap device, all of which ensure a longer lasting and energy efficient water heater.
When you specify and install a Hubbell Model PBX, you will have confidence in knowing that the owner will be provided with a long lasting, trouble-free water heater.


Highest Efficiency
  • Heat pump transfer heat from surrounding air into the hot water tank
  • Industry leading efficiency
  • Insulated with 3" thick CFC free polyurethane foam insulation to minimize stand-by heat loss
Long Life
  • Hydrastone Cement lining ensures long tank life
  • Proven Heat Pump technology
  • Incoloy Sheathed back-up electric heaters resist corrosion and mineral build up
Simple Operation
  • Fully integrated water heater easily replaces a standard electric water heater
  • User friendly electronic controller simplifies operation, maintenance, and trouble shooting
  • Low maintenance design
  • Designed for simple installation and service by a professional plumber

How the Hubbell Heat Pump Water Heater Works

The Hubbell Model PBX Heat Pump Water Heater uses a small amount of electricity to transfer heat from the air to water. In comparison, traditional electric water heaters use resistive heating elements to directly heat water. The Hubbell Model PBX is significantly more energy efficient compared to a conventional electric water heater because less electricity is required for a heat pump water heater to produce the same amount of hot water a a traditional electric water heater.
Quite simply, a heat pumps works like a refrigerator in reverse. A refrigerator moves heat from inside the refrigerator (making things cold) and transfers that heat energy to the surrounding room. A heat pump water heater on the other hand pulls free and essentially unlimited heat from the surrounding air and transfers that heat to the hot water stored in the tank.
The Hubbell Model PBX Heat Pump Water Heater can pull heat out of air as cool as 40°F, and if it cannot provide enough heating capacity to meet demand, the water heater includes back-up resistive heating elements to ensure the unit provides sufficient hot water. The heat pump process of removing heat from the air and transferring it to the water results in the exhaust of cooler dryer air, with as much as 0.4 gallons per hour of "free" dehumidification provided by the heat pump when the unit is heating water.

Heat Pump Functions
  1. The built in fan draws room air into the water heater heat pump compartment and across an evaporator coil, and exhausts cooler and slightly dryer (dehumidified) air.
  2. The evaporator coil captures heat energy in the air and transfers that energy to a specially formulated CFC free refrigerant contained within the evaporator.
  3. The refrigerant changes from a liquid to a gas as it gets warmer.
  4. The refrigerant, now as a warm gas, exits the evaporator and passes into a compressor.
  5. The warm gas is compressed, causing it to become a superheated hot gas and then flows to the heat exchanger.
  6. The heat exchanger transfers heat energy from the superheated hot gas to the cold water from the tank.
  7. The pump circulates cold water from the tank through the heat exchanger resulting in a continuous transfer of heat energy from the superheated gas to the water.
  8. Hot water exits the heat exchanger and is stored in the tank.
  9. The superheated gas condenses back to a liquid and awaits to repeat the process.

Selectable Operating Modes
Economy This mode controls the heater such that the heat pump provides essentially all of the heating capacity. This is typically the lowest operating cost mode.
Hybrid This mode controls the heater in a way to optimize its efficiency and user experience and is the default setting. This mode operates the water heater such that the heat pump provides the vast majority of heating capacity and automatically switches to electric resistance heater mode only when necessary to meet high demand or to optimize efficiency.
Electric This mode controls the heater such that it only heats using the electric resistance heaters and operates as a traditional electric water heater. The heat pump will not operate in this mode.
Super This mode controls the heater such that both the heat pump and the electric resistance elements can operate simultaneously. This mode provides the fastest recovery option possible by providing heating capacity from both the heat pump and the electric resistance heaters at the same time.
Vacation This mode prevents the heater from heating (regardless of what mode it is in) as a way to improve efficency during long periods of no usage (i.e. vacation). In this mode the only time the heater will heat is if the unit is in danger of freezing. The user sets the number of days to be in vacation mode (adjustable from 2 to 99 days or Off), and the unit resumes its previous mode of operation at the end of this period.
Temporary Modes
Max Heat Simply pressing one button maximizes heating capacity by temporarily putting the heater into super mode.
Fan Off Simply pressing one button temporarily lowers the fan speed which reduces the airflow and minimizes operating noise. Pressing the button twice turns the fan off for a user adjustable time period.
Installation Requirements

Installed location must be at least a 10' x 10' x 7' room (700 cubic feet of air space). If smaller, there must be louver installed to provide sufficient airflow.
Installed room location must not be cooler than 40°F.
Installed locations with warmer ambient air temperature (i.e. furnace room) provides abundant "free" heat and is advantageous.
The heat pump dehumidifies the air and as a result produces condensate which must be piped to drain or outdoors.
The washable air filter requires periodic cleaning. Frequency depends upon environmental conditions.


Optional Equipment
  • 1 1/2" Male NPT inlet and outlet water connections
  • Solid (Copper-Alloy, Type 304L, Type 316L, stainless steel) storage tank of maximum life
  • Tank installed heat exchanger for use with solar or radiant heating systems
  • ASME tank construction
  • Alternate voltages (1 or 3 phase), alternate wattages or 50 Hz available
  • Condensate removal pump (120V plug-in) to remove and lift condensate to drain

Please note: optional equipment may impact overall dimensions and weight. Please request submittal drawing from factory.


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Specifications

Model PBX Water Heater Specifications
Tank: Hydrastone Cement Lined Steel
Storage: 40, 50, 65, 80, 119 Gallons
Orientation: Vertical
Voltage: 208-240 Volt
Phase: 1 Φ
Frequency: 60 Hz
Inlet Size: 3/4" Female NPT
Outlet Size: 3/4" Male NPT
Drain Size: 3/4" GHT
Condensate Size: 1/4" Tube
Relief Valve Size: 3/4" Female NPT
Relief Valve Type: T&P, 210°F, 150 psi
Heat Pump:
Refrigerant: R426A (CFC Free)
ODP: 0
GWP: 1349
Over Pressure Safety: Manual Reset
Field Chargeable: No
Ambient Air:
Air Flow (High Fan): 450 CFM
Air Flow (Low Fan): 250 CFM
Air Filtration: Washable / Removable
Ambient Air Range: 40-110°F
Error Indication: Visual and Audible
Demand Response Capable: Yes
Child Lock Capable: Yes
Hi-Limit: 190°F Manual Reset
Pressure Rating: 150 psi WP, 300 psi TP
Thermostat Range: 50-160°F (°F or °C) +/- 3°F
First Hour Rating (Gallons):
PBX40SL: 46
PBX50SL: 61
PBX65SL: 70
PBX80SL: 82
PBX120SL: 120
Stand by Heat Loss (°F/Hr):
PBX40SL: 0.45
PBX50SL: 0.36
PBX65SL: 0.35
PBX80SL: 0.28
PBX120SL: 0.28
Energy Factor: 2.33
COP: 2.36
Average Power Consumption:
High Fan: 680 Watts
Low Fan: 614 Watts
Electric Elements: Incoloy Sheathed 3800 W @ 240V
Insulation: 3" Polyurethane Foam
Sound Level: 62db Average @ 3 feet
Warranty:
Tank: 10 Years
Parts: 6 Years
Approvals: cULus
Jacket: High Impact Colorized Composite
Color: White with Black Trim
Outline Dimensions
Dimensional Data
Storage
Capacity
(Gallons)
Base
Model
Number
Dimensions (Inches)Dimensions (Inches)Dimensions (Inches)Dimensions (Inches)Shipping
Weight
(lbs.)
Storage
Capacity
(Gallons)
Base
Model
Number
Overall
Diameter
"A"
Overall
Height
"B"
Floor to T&P
and HW Outlet
"C"
Floor to
CW Inlet
"D"
Shipping
Weight
(lbs.)
40PBX40SL2849269270
50PBX50SL2566439325
65PBX65SL2863409365
80PBX80SL2873.5509440
119PBX120SL3084619525
Note: These units are designed to meet or exceed ANSI (American National Standards Institute) requirements and have been tested accrding to D.O.E. test procedures and meet or exceed the energy efficiency requirements of NAECA, ASHRAE standard 90, ICC code and all state energy efficiency performance criteria for energy consuming appliances.Note: These units are designed to meet or exceed ANSI (American National Standards Institute) requirements and have been tested accrding to D.O.E. test procedures and meet or exceed the energy efficiency requirements of NAECA, ASHRAE standard 90, ICC code and all state energy efficiency performance criteria for energy consuming appliances.Note: These units are designed to meet or exceed ANSI (American National Standards Institute) requirements and have been tested accrding to D.O.E. test procedures and meet or exceed the energy efficiency requirements of NAECA, ASHRAE standard 90, ICC code and all state energy efficiency performance criteria for energy consuming appliances.Note: These units are designed to meet or exceed ANSI (American National Standards Institute) requirements and have been tested accrding to D.O.E. test procedures and meet or exceed the energy efficiency requirements of NAECA, ASHRAE standard 90, ICC code and all state energy efficiency performance criteria for energy consuming appliances.Note: These units are designed to meet or exceed ANSI (American National Standards Institute) requirements and have been tested accrding to D.O.E. test procedures and meet or exceed the energy efficiency requirements of NAECA, ASHRAE standard 90, ICC code and all state energy efficiency performance criteria for energy consuming appliances.Note: These units are designed to meet or exceed ANSI (American National Standards Institute) requirements and have been tested accrding to D.O.E. test procedures and meet or exceed the energy efficiency requirements of NAECA, ASHRAE standard 90, ICC code and all state energy efficiency performance criteria for energy consuming appliances.Note: These units are designed to meet or exceed ANSI (American National Standards Institute) requirements and have been tested accrding to D.O.E. test procedures and meet or exceed the energy efficiency requirements of NAECA, ASHRAE standard 90, ICC code and all state energy efficiency performance criteria for energy consuming appliances.
Hubbell Heat Pump Water Heater Performance
Energy Consumption Chart
Annual Energy Consumption (EST) Annual Energy Consumption (EST) Annual Energy Consumption (EST) Annual Energy Consumption (EST) Annual Energy Consumption (EST) Annual Energy Consumption (EST) Annual Energy Consumption (EST) Annual Energy Consumption (EST) Annual Energy Consumption (EST) Annual Energy Consumption (EST) Annual Energy Consumption (EST)
Ambient Air Temperature Energy Factor (EF) Coefficient of Performance (COP) Annual Energy Consumption and Operating Cost in Various Operating Modes Annual Energy Consumption and Operating Cost in Various Operating Modes Annual Energy Consumption and Operating Cost in Various Operating Modes Annual Energy Consumption and Operating Cost in Various Operating Modes Annual Energy Consumption and Operating Cost in Various Operating Modes Annual Energy Consumption and Operating Cost in Various Operating Modes Annual Energy Consumption and Operating Cost in Various Operating Modes Annual Energy Consumption and Operating Cost in Various Operating Modes
Ambient Air Temperature Energy Factor (EF) Coefficient of Performance (COP) Economy Economy Hybrid Hybrid Electric Electric Super Super
Ambient Air Temperature Energy Factor (EF) Coefficient of Performance (COP) kW·Hrs Operating
Cost $
kW·Hrs Operating
Cost $
kW·Hrs Operating
Cost $
kW·Hrs Operating
Cost $
50°F1.391.423159$3363159$3364671$4974368$465
70°F2.332.361884$2011884$2014671$4973851$410
90°F3.073.071430$1521430$1524671$4973527$376
Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.Energy Factor and Average Annual Operating Costs based on 2007 D.O.E. (Department of Energy) test procedures. D.O.E. national average fuel rate electricity 10.65¢/KWH. Energy Factor (EF) based upon heater operating in Hybrid mode.
Recovery Rating Chart
Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH) Continuous Recovery Rating (GPH)
Ambient Air Temp Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes Continuous Recovery Rating (GPH) in Various Operating Modes
Ambient Air Temp Economy Economy Economy Hybrid Hybrid Hybrid Electric Electric Electric Super Super Super
Ambient Air Temp 60°F ΔT 70°F ΔT 80°F ΔT 60°F ΔT 70°F ΔT 80°F ΔT 60°F ΔT 70°F ΔT 80°F ΔT 60°F ΔT 70°F ΔT 80°F ΔT
50°F6.55.64.925.922.219.425.922.219.432.427.824.3
70°F10.99.48.225.922.219.425.922.219.436.831.627.6
90°F14.212.210.625.922.219.425.922.219.440.134.430.0
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Continuous Recovery rating based upon 240V power supplied to heater and fan operating in high speed mode.
ΔT represents the °F temperature rise for hot water.
Heating Chart
Heating Capacity Chart (BTU/Hr) Heating Capacity Chart (BTU/Hr) Heating Capacity Chart (BTU/Hr) Heating Capacity Chart (BTU/Hr) Heating Capacity Chart (BTU/Hr)
Ambient Air Temp BTU/Hr Rating in Various Operating Modes BTU/Hr Rating in Various Operating Modes BTU/Hr Rating in Various Operating Modes BTU/Hr Rating in Various Operating Modes
Ambient Air Temp Economy Hybrid Electric Super
50°F3,24012,96512,96516,205
70°F5,40012,96512,96518,365
90°F7,02012,96512,96519,985
Heating capacity based on 240V power to heater and fan operating in high speed mode.Heating capacity based on 240V power to heater and fan operating in high speed mode.Heating capacity based on 240V power to heater and fan operating in high speed mode.Heating capacity based on 240V power to heater and fan operating in high speed mode.Heating capacity based on 240V power to heater and fan operating in high speed mode.
Amperage Chart
Amperage Rating Chart (Amps) Amperage Rating Chart (Amps) Amperage Rating Chart (Amps) Amperage Rating Chart (Amps) Amperage Rating Chart (Amps)
Supply Voltage Total Maximum AMP Draw in Various Operating Modes Total Maximum AMP Draw in Various Operating Modes Total Maximum AMP Draw in Various Operating Modes Total Maximum AMP Draw in Various Operating Modes
Supply Voltage Economy Hybrid Electric Super
240V2.615.815.8 (3800 Watts)18.4
220V2.814.514.5 (3200 Watts)17.3
208V3.013.713.7 (2850 Watts)16.7
Over current circuit protection rated minimum 25 amp required, reference all local, state and national codes.Over current circuit protection rated minimum 25 amp required, reference all local, state and national codes.Over current circuit protection rated minimum 25 amp required, reference all local, state and national codes.Over current circuit protection rated minimum 25 amp required, reference all local, state and national codes.Over current circuit protection rated minimum 25 amp required, reference all local, state and national codes.
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