Envision Peripherals Geothermal Indoor Split Heat Pumps manual

Installation Information W ater Piping Connections Desuperheater Connections Electrical Startup Procedures T roubleshooting Preventive Maintenance IM1592 06/07 Envision Series Geothermal Indoor Split Heat Pumps • R-410A Refrigerant • 2 - 6 T on Single Speed • 2 - 6 T on Dual Capacity Envision Split Installation Manual[...]

2 ENVISION SERIES INST ALLA TION MANUAL Model Nomenc la ture N D Z 049 A 1 1 A C Coax Options Model T ype C= Copper N= Envision N= Cupronickel Compressor T ype Open Option D= Dual Capacity A= Standard S= Single Speed Hot W ater Option Cabinet Configuration 0= None Z= Indoor Split 1= Hot W ater Gerneration with factory installed pump Unit Capacity V[...]

3 ENVISION SERIES INST ALLA TION MANUAL T able of Contents Model Nomenclature 2 Physical Characteristics 2 General Installation Information 4-8 Air Handler Coil Data 9 Line Set Sizes 9 Open Loop W ell W ater Systems 10-1 1 Closed Loop Ground Source Systems 12 Desuperheater 13-14 Electical Data 14 Thermostat Wiring 15 Wiring Schematics 16-17 Micropr[...]

4 ENVISION SERIES INST ALLA TION MANUAL Installing and servicing heating and air conditioning equipment can be hazardous due to system pressure and electri- cal components. Only trained and qualied service personnel should install, repair or service heating and air conditioning equipment. Untrained personnel can perform the basic maintenance fun[...]

5 ENVISION SERIES INST ALLA TION MANUAL small, as in replacement of heating only systems, larger ductwork should be installed. All existing ductwork should be checked for leaks and repairs made accordingly . The duct systems and diffusers should be sized to handle the design airow quietly . If air noise or excessive airow is a problem, the bl[...]

6 ENVISION SERIES INST ALLA TION MANUAL Disconnect Thermostat Wire From Air Handler V ibration Absorbing Pad or Air Pad P/T Plugs Water Out Water In Lineset T o Air Handler Insulated Suction Line Supply Duct Wire T o Thermostat Return Duct Condensate Drain (must be trapped) T o Drain Remote Air Handler (Maximum Recommended Distance is 50' Betw[...]

7 ENVISION SERIES INST ALLA TION MANUAL Dual Fuel Systems Envision units can be connected to fossil fuel furnaces that include an A-coil or slab coil. Dual fuel installations utilize the Envision heat pump for heating until the point that auxiliary heat is called for on the thermostat. At that point, the furnace will be enabled and the heat pump wi[...]

8 ENVISION SERIES INST ALLA TION MANUAL Wa ter Piping The proper water ow must be provided to each unit whenever the unit operates. T o assure proper  ow , use pres sure/temperature por t s to deter - mine the ow rate. These por ts should be l ocated at the supply and return water connections on t he unit. The proper ow rate c annot be [...]

9 ENVISION SERIES INST ALLA TION MANUAL Air Handler Coil Da ta Notes: * V ariable speed air handler required for all dual capacity units. Line Set Sizes Envision Split Model Matching Air Handler Coil Surface Area (sq ft.) FPI Rows T ube Diameter 022 - 038 042 - 072 NAH060 5.83 12 3 3/8" NAH036 5.83 12 2 3/8" Unit Air Factory Size Handler [...]

10 ENVISION SERIES INST ALLA TION MANUAL Ope n Loop - Well W ater Systems T ypic al open loop piping is shown bel ow . A lways mai ntain water pressure in the heat ex c hanger by placing wa ter con - trol valves at the outlet of the unit to pre vent mineral precipit ation. Use a closed bladder t ype expansion tank to minimize mineral formatio n due[...]

1 1 ENVISION SERIES INST ALLA TION MANUAL Solenoid W iring W ater control valves draw their power directly from a unit’s 24V transformer and can overload and possibly burn out the transformer . Check total V A draw of the water valve and ensure that it is under 15 V A. Wa ter Quality In ground water situa tions where s caling c ould be heavy or w[...]

12 ENVISION SERIES INST ALLA TION MANUAL Closed Loop Ground S ource Systems Note: For closed loop systems with antifreeze protection, set SW2-2 to the “loop” position (see table on page 21). Once piping is completed between the unit, pumps and the ground loop (see gure below), nal purging and charging of the loop is required. A ush car[...]

13 ENVISION SERIES INST ALLA TION MANUAL Figu re 1 1: Desu pe rhe ate r I nst allat ion in Pr eh eat T a nk Figu re 10: T yp ical D e supe rh eat er I nst alla tion Drain V alv e In P/T Relie f V alv e Cold W ater In Hot W ater Out DHW W ater In DHW W ater Out V enting W aste V alv e or V ent Coupling 3/4˝ x 3/4˝ x 1/2˝ tee Drain V alve Drain V [...]

14 ENVISION SERIES INST ALLA TION MANUAL Plumbing Installation 1 . Inspect the dip tube in the water heat er col d inlet for a check valve . If a check valve is present it must be removed or damage to the desuperheater circulator will oc cur . 2. R emove drain v alve and tt ing. 3. Thread the 3/4- inch NPT x 3 - 1 /2-inch bras s nipple into the [...]

15 ENVISION SERIES INST ALLA TION MANUAL Gen eral Be sure the available power is the same voltage and phase as that shown on the unit serial plate. Line and low voltage wiring must be done in accordance with local codes or the National Electric Code, whichever is applicable. See unit electri - cal data for fuse or cicuit breaker sizing information.[...]

16 ENVISION SERIES INST ALLA TION MANUAL W iring Sc hematics En vision Series - Dual Capacity Split W iring Schematic - 208-230/60/1 HWL HP LP WCL 97P774-31 3/9/07 Status LED PCB SW4 R R R R R G Y R T T 240V L2 240V L1 240V L2 P6 Premier 2 Microprocessor Logic Control (DC Voltage) P1 Fused L2 R C CC-GND NO CR2 COM F1-10A 240V Fused L2 NO CR1 COM 1 [...]

17 ENVISION SERIES INST ALLA TION MANUAL W iring Sc hematics En vision Series - Single Speed Split W iring Schema tic - 208-230/60/1 HWL HP LP WCL 97P774-30 3/9/07 Status LED PCB SW4 R R R R R G Y R T T 240V L2 240V L1 240V L2 P6 Premier 2 Microprocessor Logic Control (DC Voltage) P1 Fused L2 R C CC-GND NO CR2 COM F1-10A 240V Fused L2 NO CR1 COM 1 [...]

18 ENVISION SERIES INST ALLA TION MANUAL S t a rt u p The unit will not operate until all the inputs and safety controls are checked for normal conditions. At rst power-up, a four-minute delay is employed before the compressor is energized. C o m p o n e n t S e q u e n c i n g D e l a y s Components are sequenced and delayed for optimum space c[...]

19 ENVISION SERIES INST ALLA TION MANUAL C o o l i n g O p e r a t i o n In all cooling operations, the reversing valve directly tracks the “O” input. Thus, anytime the “O” input is present, the reversing valve will be energized. Cool, 1st Stage (Y1,O) The blo wer mot or a nd h ot wate r pu mp a re star ted immediately , the loop pump(s) is[...]

20 ENVISION SERIES INST ALLA TION MANUAL OPER A TI ON LO GI C HE A TI NG COO LIN G F A N ON SL 1 - I N ON SL 2 - IN ON STG1 STG2 STG3 EM ERG ST G1 STG2 SI NGLE S PEED U NIT S Co mp res so r On On On Off On On - - - Rev Valve Off Of f Off Off On On - - - Loo p Pum p On On On Off On On - On - DH W Pump On Off Off Off On On - - - Se co nda r y 1- Ou t[...]

21 ENVISION SERIES INST ALLA TION MANUAL DIP SWITCH NUMBER DESCRIPTION OFF POSITION ON POSITION SW1 N/A NOT USE D N/A N/A SW2 1 Service/T est Mode - Allows control of “NORM” or “TEST” opera - tional modes. T est mode accelerates most timing functions 16 times to allow faster troubleshooting. T est mode also allows view - ing the “CURRENT?[...]

22 ENVISION SERIES INST ALLA TION MANUAL The Envision series comes with a holding charge. The charge must be adjusted in the eld based on performance. Refrigeration piping on the split consists of installing a brazed copper line set between the blower coil unit and the unit’s split compressor section. T o select the proper tube diameters for t[...]

23 ENVISION SERIES INST ALLA TION MANUAL Leak T esting The refrigeration line set must be pressurized and checked for leaks before purging and charging the unit. T o pressurize the line set, attach refrigerant gauges to the service ports and add an inert gas (nitrogen or dry carbon dioxide) until pres - sure reaches 60 to 90 PSIG. Never use oxygen [...]

24 ENVISION SERIES INST ALLA TION MANUAL Once the proper superheat setting has been achieved, replace and tighten the seal cap. W arning: There are 8 total (360°) turns on the superheat adjustment stem from wide open to fully closed. When adjusting the superheat stem clockwise (superheat increase) and the stop is reached, any further clockwise tur[...]

25 ENVISION SERIES INST ALLA TION MANUAL Pressur e/T emper ature Co version Char t for R-410A PRES SUR E (PSI G) TEM P °F PRES SUR E (PSI G) TEM P °F PRES SUR E (PSI G) TEM P °F PRES SUR E (PSI G) TEM P °F PRES SUR E (PSI G) TEM P °F 60 8.5 180 63.5 300 96.3 420 120.6 540 140.0 62 9.9 182 64.2 302 96.8 422 120.9 542 140.3 64 1 1.2 184 64.8 304[...]

26 ENVISION SERIES INST ALLA TION MANUAL Single Speed Models Unit Oper a ting P ar ameter s Suction Pressure PSIG Discharge Pressure PSIG Superheat Subcooling W ater T emp Rise °F Air T emp Drop °F DB 1.5 120 - 142 215 - 240 7 - 15 7 - 14 18 - 22 18 - 22 3.0 1 15 - 138 190 - 225 10 - 18 4 - 1 1 8 - 10 18 - 22 1.5 125 - 148 290 - 315 8 - 14 6 -1 1[...]

27 ENVISION SERIES INST ALLA TION MANUAL Dual Capacity Models Unit Oper a ting P ar ameter s Note: Cooling performance based on entering air temperatures of 80º F DB, 67º F WB. Heating performance based on entering air temperature of 70º F DB. First Stage Operation Suction Pressure PSIG Discharge Pressure PSIG Superheat Subcooling Water T emp Ri[...]

28 ENVISION SERIES INST ALLA TION MANUAL High voltage is c orrec t and matches nameplate. F uses, breakers and wire size cor rect. Low voltage wiring c omplete. Piping completed and water sys tem cleaned and ushed. Air is purged f rom clo sed loop system. Isolation valves are open, water control valves or loop pumps wired. Condensate line open a[...]

29 ENVISION SERIES INST ALLA TION MANUAL 1 5. Adjust the heating setpoint below room temperature and verif y that the compre ssor and water valv e or loop pumps deactivate. 1 6. During all testing, check for ex ce ssive vibration, noise or water leaks. Correc t or repair as required. 1 7 . Set syst em to desired nor mal operating mode and set tempe[...]

30 ENVISION SERIES INST ALLA TION MANUAL H ea ti ng C yc le An al ys is COOLING TXV - ACTIVE RIGHT TO LEFT ClgTXV Lineset length Measure liquid line temperature and pressure here in both heating and cooling modes COAX HEATING TXV - ACTIVE LEFT TO RIGHT HtgTXV Measure suction temperature here at TXV bulb in heating modes. Suct PSI____ Suct sat temp_[...]

31 ENVISION SERIES INST ALLA TION MANUAL Pr essur e Dr op and R ecommended F lo w Rates 30°F 50°F 70°F 90°F 1 10°F 4 1.4 1.3 1.2 1.1 1.0 6 2.8 2.6 2.4 2.3 2.1 8 4.7 4.4 4.1 3.8 3.5 10 7.0 6.6 6.2 5.8 5.3 3 0.8 0.7 0.7 0.7 0.6 5 2.0 1.8 1.7 1.6 1.5 7 3.6 3.4 3.2 3.0 2.8 9 5.8 5.5 5.1 4.8 4.4 5 1.2 1.2 1.1 1.0 1.0 7 2.2 2.1 1.9 1.8 1.7 9 3.4 3.2[...]

32 ENVISION SERIES INST ALLA TION MANUAL T roubleshootin g Stand ard Microprocessor C ontrols T o chec k the unit control b oard for proper oper ation: 1 . Disconnect t hermost at wires at the contro l board. 2. Jumper the desired test input (Y 1 , Y2, W , O or G ) to the R terminal to simulate a thermost at signal. 3. If control functi ons proper [...]

33 ENVISION SERIES INST ALLA TION MANUAL Pr e ventiv e Maintena nce Water Coil Mainte nance 1. Keep all air out of the water . An open loop system should be checked to ensure that the well head is not allowing air to inltrate the water line. Lines should always be airtight. 2. Keep the system under pressure at all times. It is recommended in ope[...]

34 ENVISION SERIES INST ALLA TION MANUAL Physical Dimensions D I ME N S I ON V A LUE D I M E NSI ON V ALU E D E S C R I PT I ON A 19.25 A 21.25 UN IT H E I GHT B 22 . 50 B 25.50 U N I T W ID T H C 26.50 C 3 1.50 U NI T D EP T H D 1. 93 D 2.21 W A T E R I N E 6.93 E 7. 21 W A T E R OU T F 8. 44 F 9.21 BRAS S S E RVI CE VA LVE (LI QU ID ) G 11 . 55 G[...]

35 ENVISION SERIES INST ALLA TION MANUAL Installation Notes:[...]

Manufactured by: W aterFurnace International, Inc. 9000 Conservation W ay Fort W ayne, IN 46809 WFI has a policy of continuous product research and development and reserves the right to change design and specications without notice. ©2007 WFI. Product: Envision Series T ype: Geothermal Indoor Split Heat Pumps Size: 2 thru 5.5 T on Single Speed [...]