ENGINEERING DESIGN GUIDE

Transcription

1 ENGINEERING DESIGN GUIDE Commercial Horizontal & Vertical Packaged Water-Source Heat Pumps: Compact Heat Controller, Inc Wellworth Ave. Jackson, MI (517)

2 Table of Contents Unit Features... 3 Selection Procedure HB Series Nomenclature... 6 Performance Data - ARI/ASHRAE/ISO Performance Data Selection Notes... 8 Performance Data Performance Data Performance Data Performance Data Performance Data Performance Data Performance Data Performance Data Performance Data Performance Data Performance Data Air Flow Correction Tables Antifreeze Correction Table Blower Performance Data - Standard Unit Blower Performance Data - High Static Physical Data HB - Horizontal Dimensional Data HB - Vertical Upfl ow Dimensional Data Corner Weights for HB Series Units Electrical Data - Standard Unit Electrical Data - High Static Blower HB Series Wirg Diagram Matrix Typical Wirg Diagram Sgle Phase HB Units With CXM Controller...33 Typical Wirg Diagram Three Phase 208/230V HB Units With CXM Controller Typical Wirg Diagram Three Phase 460/575V HB Units with CXM Controller

3 Unit Features HB Series The Series exceeds ASHRAE 90.1 effi ciencies, and uses R-410A zero ozone depletion refrigerant, makg it an extremely environmentally-friendly option. is eligible for additional LEED (Leadership Energy and Environmental Design) pots because of the green technology design. With one of the smallest cabets the dustry, the will easily fi t to tight spaces. Designed to be backward compatible with thousands of older water-source heat pumps. Available sizes from 1/2 ton (1.76 kw) through 5 tons (17.6 kw) with multiple cabet options (vertical upfl ow and horizontal) the offers a wide range of units for most any stallation. The has an extended range refrigerant circuit, capable of geothermal ground loop applications (with optional extended range sulation) as well as boiler-tower water loop applications. Standard features clude: Copeland scroll compressors (rotary for size 018 and below), microprocessor controls, galvanized steel cabet, galvanized steel with epoxy powder pated dra pan and sound absorbg air handler sulation. Heat Controller s exclusive double isolation compressor mountg system makes the the quietest unit on the market. Compressors are mounted via rubber vibration isolators to a heavy gauge mountg plate, which is further isolated from the cabet base with rubber grommets for maximized vibration/sound attenuation. The easy access control box and large access panels make stallg and matag the unit easier than other watersource heat pumps currently production, provg that a small unit can be easy to service. Unit Features Sizes 006 (1/2 ton, 1.76 kw) through 060 (5 tons, 17.6 kw) R-410A refrigerant Exceeds ASHRAE 90.1 effi ciencies Galvanized steel construction Epoxy powder pated galvanized steel dra pan Sound absorbg glass fi ber sulation Unique double isolation compressor mountg via vibration isolatg rubber grommets for quiet operation Insulated divider and separate compressor/air handler compartments Copeland scroll compressors (rotary for size 018 and below) TXV meterg device Microprocessor controls standard Field convertible discharge air arrangement for horizontal units PSC three-speed fan motor Internally trapped condensate dra le (vertical units only) Unit Performance Sentel performance monitorg system Eight Safeties Standard Extended range (20 to 120 F, -6.7 to 48.9 C) capable High static blowers available Cupro-Nickel water-coil available Sound absorbg UltraQuiet package available The Series is full of options, such as an e-coated air coil. Optional high static fan motor expands the operatg range and helps overcome some of the challenges associated with ductwork for retrofi t stallations. A Cupro- Nickel water-coil and sound absorbg mute package are options that make a great unit even better. The Series Water-Source Heat Pumps are designed to meet the challenges of today s HVAC demands with one of the most novative products available on the market. 3

4 Selection Procedure Reference Calculations Heatg LWT = EWT - HE GPM x 500 HR LWT = EWT + GPM x 500 Coolg LC = TC - SC LAT = EAT + HC x1.08 LAT (DB) = EAT (DB) - SC x1.08 S/T = SC TC Legend and Glossary of Abbreviations BTUH = BTU (British Thermal Unit) per hour = airfl ow, cubic feet/mute COP = coeffi cient of performance = BTUH output/btuh put DB = dry bulb temperature ( F) EAT = enterg air temperature, Fahrenheit (dry bulb/wet bulb) EER = energy effi ciency ratio = BTUH output/watt put MPT = male pipe thread ESP = external static pressure (ches w.g.) EWT = enterg water temperature GPM = water fl ow U.S. gallons/mute HE = total heat of extraction, BTUH HC = air heatg capacity, BTUH HR = total heat of rejection, BTUH HWC = hot water generator (desuperheater) capacity, Mbtuh FPT = female pipe thread KW = total power unit put, kilowatts LAT = leavg air temperature, F LC = latent coolg capacity, BTUH LWT = leavg water temperature, F MBTUH = 1000 BTU per hour S/T = sensible to total coolg ratio SC = sensible coolg capacity, BTUH TC = total coolg capacity, BTUH WB = wet bulb temperature ( F) WPD = waterside pressure drop (psi & ft. of hd.) Conversion Table - to convert ch-pound (English) to S-I (Metric) Air Flow Water Flow Ext Static Pressure Water Pressure Drop Airflow (L/s) = x Water Flow (L/s) = gpm x ESP (Pa) = ESP ( of wg) x 249 PD (kpa) = PD (ft of hd) x

5 Selection Procedure Step 1 Determe the actual heatg and coolg loads at the desired dry bulb and wet bulb conditions. Step 2 Obta the followg de sign parameters: Enterg water temperature, water flow rate GPM, air flow, water fl ow pressure drop and design wet and dry bulb temperatures. Air flow should be between 300 and 450 per ton. Unit water pressure drop should be kept as close as possible to each other to make water balancg easier. Go to the ap pro pri ate tables and fi nd the proper dicated water flow and water tem per a ture. Step 3 Select a unit based on total and sensible coolg conditions. Select a unit which is closest to, but no larger than, the actual coolg load. Step 4 Enter tables at the design water fl ow and water temperature. Read the total and sensible coolg capacities (Note: terpolation is per mis si ble, ex trap o la tion is not). Step 5 Read the heatg capacity. If it exceeds the design criteria it is acceptable. It is quite normal for Water-Source Heat Pumps to be selected on coolg capacity only sce the heatg output is usually greater than the coolg capacity. Step 6 Determe the correction factors associated with the variable factors of dry bulb, wet bulb and air fl ow. Corrected Total Coolg = tabulated total coolg x wet bulb correction x air fl ow correction Corrected Sensible Coolg = tabulated sensible coolg x dry bulb correction x air fl ow correction Step 7 Compare the corrected capacities to the load re quire ments. Normally if the capacities are with 10% of the loads, the equipment is ac cept able. It is better to undersize than oversize, as undersizg improves humidity control, reduces sound levels and extends the life of the equip ment. Step 8 When completed, calculate water temperature rise and assess the selection. If the units selected are not with 10% of the load cal cu la tions, then review what effect chang g the GPM, water temperature and/or air fl ow and air tem per a ture would have on the corrected capacities. If the desired capacity cannot be achieved, select the next larger or smaller unit and repeat the procedure. Remember, when doubt, undersize slightly for best performance. Example Equipment Selection For Cool g Step 1 Load Determation: Assume we have determed that the appropriate coolg load at the desired dry bulb 80 F and wet bulb 65 F con di tions is as follows: Total Coolg... 23,700 BTUH Sensible Coolg... 16,500 BTUH Enterg Air Temp F Dry Bulb / 65 F Wet Bulb Step 2 Design Conditions: Similarly, we have also obtaed the followg design pa ram e ters: Enterg Water Temp F Water Flow (Based upon 10 F rise temp.) 6.0 GPM Air Flow Step 3, 4 & 5 HP Selection: After makg our prelimary selection ( 024), we enter the tables at design water fl ow and water tem per a ture and read Total Coolg, Sens. Coolg and Heat of Rej. ca pac i ties: Total Coolg... 23,400 BTUH Sensible Coolg... 17,500 BTUH Heat of Rejection... 30,200 BTUH Step 6 & 7 Enterg Air and Airfl ow Corrections: Next, we determe our correction factors. Table Ent Air Air Flow Cor rect ed Corrected Total Coolg = 23,400 x x = 22,767 Corrected Sens Coolg = 17,500 x x = 19,270 Corrected Heat of Reject = 30,200 x x = 30,713 Step 8 Water Temperature Rise Calculation & As sess ment: Actual Temperature Rise 10.2 F When we compare the Corrected Total Coolg and Corrected Sensible Coolg fi gures with our load re quire ments stated Step 1, we discover that our selection is with +/- 10% of our sensible load requirement. Fur ther more, we see that our Cor rect ed Total Coolg fi gure is with 1,000 Btuh the actual di cat ed load. 5

6 HBH & HBV COMPACT Horizontal & Vertical HFC-410A Units Enterg Water Temperature Range: F ( C) Horizontal Water Source Heat Pump Vertical Water Source Heat Pump Sizes Sizes HBH & HBV Model Structure H B H A 3 C 3 0 A L B MODEL TYPE HB = HEAT CONTROLLER COMPACT 410A CONFIGURATION H = HORIZONTAL (NON PAINTED) V = VERTICAL (PAINTED POLAR ICE) UNIT SIZE REVISION LEVEL A = CURRENT REVISION VOLTAGE 1 = /60/1 8 = 265/60/1 3 = /60/3 4 = 460/60/3 5 = 575/60/3 RETURN AIR OPTIONS L = LEFT RETURN R = RIGHT RETURN F = FRONT RETURN, VERTICAL V = LEFT RETURN, S.S DRAIN PAN W = RIGHT RETURN, S.S DRAIN PAN Z = FRONT RETURN, S.S. DRAIN PAN HEAT EXCHANGER OPTIONS A = Copper Water Coil w/e-coated Air Coil C = Copper Water Coil w/non-coated Air Coil J = Cupro-Nickel Water Coil w/e-coated Air Coil N = Cupro-Nickel Water Coil w/non-coated Air Coil FUTURE USE 0 = NONE 3 = DISCHARGE PRESSURE WATER REGULATING VALVE (COOLING ONLY) CABINET INSULATION 1 = EXTENDED RANGE 2 = EXTENDED RANGE WITH ULTRA QUIET 3 = STANDARD RANGE 4 = STANDARD RANGE WITH ULTRA QUIET C = STANDARD RANGE, COOLING ONLY, VERTICAL UNITS CONTROLS C = CXM SUPPLY AIR OPTIONS B = BACK DISCHARGE, HORIZONTAL ONLY Y = BACK DISCHARGE, HIGH STATIC HORIZONTAL T = TOP DISCHARGE, VERTICAL ONLY V = TOP DISCHARGE, HIGH STATIC VERTICAL S = STRAIGHT DISCHARGE, HORIZONTAL ONLY Z = STRAIGHT DISCHARGE, HIGH STATIC HORIZONTAL Basic Unit Description: The basic unit price cludes sealed heat pump refrigerant circuit and air handler with cabetry, fi lter, and a factory stalled hanger kit on horizontal units. Cabetry - Compact design - galvanized steel construction - controls access panel - compressor access panels - FPT water connections - high and low voltage knockouts - 1 (25mm), air fi lter and fi lter rack. All vertical units have a left or right return air option, sizes have a front return option. All horizontal units have fi eld convertible discharge air patterns with extra parts required. Standard Controls - CXM Controller, loss of charge switch, high pressure switch, water coil low temperature cutout, lockout safety circuit resetable at thermostat or disconnect, LED fault dication, fi ve mute anti-short cycle protection, random start, high and low voltage protection, condensate overfl ow protection, dry contact for alarm. Compressor - High effi ciency hermetic scroll or rotary, overload protected - ternally sprung and externally isolated usg dual vibration dampeng system for extra quiet operation. Mountg system corporates rubber grommet isolation under the compressor and rubber grommet isolation between the compressor mountg tray and unit base. Reversg Valve - 4-way pilot operated, solenoid activated cool mode. Refrigerant Circuit - Utilizes expansion valve meterg device - copper tubg terconnectg all components - sealed & tested non-ozone depletg, R-410A refrigerant circuit with high & low side schrader ports. Water to Refrigerant Coil - Tube--Tube, convoluted copper ner water tube. Refrigerant to Air Coil - Lanced alumum fi ns on rifl ed copper tubes. Blower Motor - Three speed PSC direct drive, permanently lubricated (Two-speed on 575 volt applications). UltraQuiet Option - Compressor corporates sprg mountg system, clude compressor discharge muffl er, blower housg is covered with high density noise suppression material. Application - Units can be applied WLHP, GWHP, or GLHP applications. 6

7 Performance Data AHRI/ASHRAE/ISO ASHRAE/AHRI/ISO English (I-P) Units Model Water Loop Heat Pump Ground Water Heat Pump Ground Loop Heat Pump Coolg 86 F Heatg 68 F Coolg 59 F Heatg 50 F Coolg 77 F Heatg 32 F Capacity Btuh EER Btuh/W Capacity Btuh COP Capacity Btuh EER Btuh/W Capacity Btuh COP Capacity Btuh EER Btuh/W Capacity Btuh HB-006 5, , , , , , HB-009 8, , , , , , HB , , , , , , HB , , , , , ,100 HB , , , , , , HB , , , , , , HB , , , , , , HB , , , , , , HB , , , , , , HB , , , , , , HB , , , , , , HB , , , , , , Coolg capacities based upon 80.6 F DB, 66.2 F WB enterg air temperature Heatg capacities based upon 68 F DB, 59 F WB enterg air temperature All ratgs based upon operation at lower voltage of dual voltage rated models COP ASHRAE/AHRI/ISO Metric (S-I) Units Model Water Loop Heat Pump Ground Water Heat Pump Ground Loop Heat Pump Coolg 30 C Heatg 20 C Coolg 15 C Heatg 10 C Coolg 25 C Heatg 0 C Capacity kw EER W/W Capacity kw COP Capacity kw EER W/W Capacity kw COP Capacity kw EER W/W Capacity kw HB HB HB HB HB HB HB HB HB HB HB HB Coolg capacities based upon 27 C DB, 19 C WB enterg air temperature Heatg capacities based upon 20 C DB, 15 C WB enterg air temperature All ratgs based upon operation at lower voltage of dual voltage rated models COP 7

8 Performance Data Selection Notes For operation the shaded area when water is used lieu of an anti-freeze solution, the LWT (Leavg Water Temperature) must be calculated. Flow must be mataed to a level such that the LWT is mataed above 40 F [4.4*C] when the JW3 jumper is not clipped (see example below). This is due to the potential of the refrigerant temperature beg as low as 32 F [0 C] with 40 F [4.4 C] LWT, which may lead to a nuisance cutout due to the activation of the Low Temperature Protection. JW3 should never be clipped for standard range equipment or systems without antifreeze. Example: At 50 F EWT (Enterg Water Temperature) and 2.25 gpm/ton, a 3 ton unit has a HE of 27,300 Btuh. To calculate LWT, rearrange the formula for HE as follows: HE = TD x GPM x 500, where HE = Heat of Extraction (Btuh); TD = temperature difference (EWT - LWT) and GPM = U.S. Gallons per Mute. TD = HE / (GPM x 500) TD = 27,300 / (6.75 x 500) F Heatg - EAT 70 F kw HR EER Airfl ow HC kw HE LAT COP 0 0 ommended TD = 8 F LWT = EWT - TD LWT = 50-8 = 42 F In this example, as long as the EWT does not fall below 50 F, the system will operate as designed. For EWTs below 50 F, higher fl ow rates will be required (open loop systems, for example, require at least 2 gpm/ton when EWT is below 50 F). 8

9 Performance Data Nomal (Rated) Airflow Performance capacities shown thousands of Btuh EWT F GPM PSI WPD Coolg - EAT 80/67 F Heatg - EAT 70 F FT Airflow TC Interpolation is permissible; extrapolation is not. All enterg air conditions are 80 F DB and 67 F WB coolg, and 70 F DB heatg. AHRI/ISO certifi ed conditions are 80.6 F DB and 66.2 F WB coolg and 68 F DB heatg. Table does not refl ect fan or pump power corrections for AHRI/ISO conditions. All performance is based upon the lower voltage of dual voltage rated units. Performance stated is at the rated power supply; performance may vary as the power supply varies from the rated. Operation below 40 F EWT is based upon a 15% methanol antifreeze solution. Operation below 60 F EWT requires optional sulated water/refrigerant circuit. See performance correction tables for operatg conditions other than those listed above. See Performance Data Selection Notes for operation the shaded areas. SC Sens/Tot Ratio kw HR EER 9 Airflow HC kw HE LAT COP Operation not recommended Operation not recommended

10 Performance Data Nomal (Rated) Airflow Performance capacities shown thousands of Btuh EWT F GPM PSI WPD Coolg - EAT 80/67 F Heatg - EAT 70 F FT Airflow TC Interpolation is permissible; extrapolation is not. All enterg air conditions are 80 F DB and 67 F WB coolg, and 70 F DB heatg. AHRI/ISO certifi ed conditions are 80.6 F DB and 66.2 F WB coolg and 68 F DB heatg. Table does not refl ect fan or pump power corrections for AHRI/ISO conditions. All performance is based upon the lower voltage of dual voltage rated units. Performance stated is at the rated power supply; performance may vary as the power supply varies from the rated. Operation below 40 F EWT is based upon a 15% methanol antifreeze solution. Operation below 60 F EWT requires optional sulated water/refrigerant circuit. See performance correction tables for operatg conditions other than those listed above. See Performance Data Selection Notes for operation the shaded areas. SC Sens/Tot Ratio kw HR EER 10 Airflow HC kw HE LAT COP Operation not recommended Operation not recommended

11 Performance Data Nomal (Rated) Airfl ow Performance capacities shown thousands of Btuh EWT F GPM PSI WPD Coolg - EAT 80/67 F Heatg - EAT 70 F FT Airflow TC SC Sens/Tot Ratio kw HR EER Airflow HC kw HE LAT COP 20 Operation not recommended Operation not recommended Interpolation is permissible; extrapolation is not. All enterg air conditions are 80 F DB and 67 F WB coolg, and 70 F DB heatg. AHRI/ISO certifi ed conditions are 80.6 F DB and 66.2 F WB coolg and 68 F DB heatg. Table does not refl ect fan or pump power corrections for AHRI/ISO conditions. All performance is based upon the lower voltage of dual voltage rated units. Performance stated is at the rated power supply; performance may vary as the power supply varies from the rated. Operation below 40 F EWT is based upon a 15% methanol antifreeze solution. Operation below 60 F EWT requires optional sulated water/refrigerant circuit. See performance correction tables for operatg conditions other than those listed above. See Performance Data Selection Notes for operation the shaded areas. 11

12 Performance Data Nomal (Rated) Airfl ow Performance capacities shown thousands of Btuh EWT F GPM PSI WPD Coolg - EAT 80/67 F Heatg - EAT 70 F FT Airflow TC SC Sens/Tot Ratio kw HR EER Airflow HC kw HE LAT COP 20 Operation not recommended Operation not recommended Interpolation is permissible; extrapolation is not. All enterg air conditions are 80 F DB and 67 F WB coolg, and 70 F DB heatg. AHRI/ISO certifi ed conditions are 80.6 F DB and 66.2 F WB coolg and 68 F DB heatg. Table does not refl ect fan or pump power corrections for AHRI/ISO conditions. All performance is based upon the lower voltage of dual voltage rated units. Performance stated is at the rated power supply; performance may vary as the power supply varies from the rated. Operation below 40 F EWT is based upon a 15% methanol antifreeze solution. Operation below 60 F EWT requires optional sulated water/refrigerant circuit. See performance correction tables for operatg conditions other than those listed above. See Performance Data Selection Notes for operation the shaded areas. 12

13 600 Nomal (Rated) Airfl ow EWT F GPM PSI Interpolation is permissible; extrapolation is not. All enterg air conditions are 80 F DB and 67 F WB coolg, and 70 F DB heatg. AHRI/ISO certifi ed conditions are 80.6 F DB and 66.2 F WB coolg and 68 F DB heatg. Table does not refl ect fan or pump power corrections for AHRI/ISO conditions. All performance is based upon the lower voltage of dual voltage rated units. Performance stated is at the rated power supply; performance may vary as the power supply varies from the rated. Operation below 40 F EWT is based upon a 15% methanol antifreeze solution. Operation below 60 F EWT requires optional sulated water/refrigerant circuit. See performance correction tables for operatg conditions other than those listed above. See Performance Data Selection Notes for operation the shaded areas. Performance Data 018 Performance capacities shown thousands of Btuh WPD Coolg - EAT 80/67 F Heatg - EAT 70 F FT Airflow TC SC Sens/Tot Ratio kw HR EER Airflow HC kw HE LAT COP 20 Operation not recommended Operation not recommended

14 Performance Data Nomal (Rated) Airfl ow Performance capacities shown thousands of Btuh EWT F GPM PSI WPD Coolg - EAT 80/67 F Heatg - EAT 70 F FT Airflow TC SC Sens/Tot Ratio kw HR EER Airflow HC kw HE LAT COP 20 Operation not recommended Operation not recommended Interpolation is permissible; extrapolation is not. All enterg air conditions are 80 F DB and 67 F WB coolg, and 70 F DB heatg. AHRI/ISO certifi ed conditions are 80.6 F DB and 66.2 F WB coolg and 68 F DB heatg. Table does not refl ect fan or pump power corrections for AHRI/ISO conditions. All performance is based upon the lower voltage of dual voltage rated units. Performance stated is at the rated power supply; performance may vary as the power supply varies from the rated. Operation below 40 F EWT is based upon a 15% methanol antifreeze solution. Operation below 60 F EWT requires optional sulated water/refrigerant circuit. See performance correction tables for operatg conditions other than those listed above. See Performance Data Selection Notes for operation the shaded areas. 14