Gebruiksaanwijzing /service van het product Geothermal Indoor Split Heat Pumps van de fabrikant Envision Peripherals
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Installation Information W ater Piping Connections Desuperheater Connections Electrical Startup Procedures T roubleshooting Preventive Maintenance IM1592 06/07 Envision Series Geothermal Indoor Split .
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.
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.
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 qualied service personnel should install, repair or service heating and air conditioning equipment.
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 airow quietly .
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 Supp.
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.
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.
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.
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.
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.
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.
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 .
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.
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.
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.
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.
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.
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.
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 O.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 inltrate the water line. Lines should always be airtight.
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.
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 specications without notice. ©2007 WFI. Product: Envision Series T ype: Geothermal Indoor Split Heat Pumps Size: 2 thru 5.
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