Envision R-410A Residential Installation Manual

33
ENVISION RESIDENTIAL INSTALLATION MANUAL
High voltage is correct and matches nameplate. •
Fuses, breakers and wire size correct. •
Low voltage wiring complete. •
Pipingcompletedandwatersystemcleanedandushed. •
Air is purged from closed loop system. •
Isolation valves are open, water control valves or loop pumps wired. •
Condensate line open and correctly pitched. •
Transformerswitchedto208Vifapplicable. •
Black/whiteandgray/whitewiresinunitcontrolboxhavebeenremovedifauxiliaryheathasbeeninstalled. •
Dip switches are set correctly. •
DHW pump switch is “OFF” unless piping is completed and air has been purged. •
Blower rotates freely – foam shipping support has been removed. •
Blower speed correct (dip switch is set correctly). •
Airlter/cleaneriscleanandinposition. •
Service/accesspanelsareinplace. •
Returnairtemperatureisbetween50-80ºFheatingand60-95ºFcooling. •
Check air coil cleanliness to insure optimum performance. Clean as needed according to maintenance guidelines. •
Toobtainmaximumperformancetheaircoilshouldbecleanedbeforestartup.A10-percentsolutionofdishwasher
detergent and water is recommended for both sides of coil, a thorough water rinse should follow.
1. Initiateacontrolsignaltoenergizetheblowermotor.Checkbloweroperation.
2. Initiateacontrolsignaltoplacetheunitinthecoolingmode.Coolingsetpointmustbesetbelowroomtemperature.
3. First stage cooling will energize after a time delay.
4. Besurethatthecompressorandwatercontrolvalveorlooppump(s)areactivated.
5. VerifythatthewaterowrateiscorrectbymeasuringthepressuredropthroughtheheatexchangerusingtheP/T
 plugsandcomparingtounitcapacitydatainspecicationcatalog.
6. Checkthetemperatureofboththesupplyanddischargewater(seepages35-36).
7. Checkforanairtemperaturedropof15°Fto25°Facrosstheaircoil,dependingonthefanspeedandenteringwater
temperature.
8. Decreasethecoolingsetpointseveraldegreesandverifyhigh-speedbloweroperation.
9. Adjustthecoolingsetpointabovetheroomtemperatureandverifythatthecompressorandwatervalveorlooppumps
deactivate.
10.Initiateacontrolsignaltoplacetheunitintheheatingmode.Heatingsetpointmustbesetaboveroomtemperature.
11. Firststageheatingwillenergizeafteratimedelay.
12. Checkthetemperatureofboththesupplyanddischargewater(seepages35-36).
13. Checkforanairtemperatureriseof20°Fto35°Facrosstheaircoil,dependingonthefanspeedandenteringwater
temperature.
14. Ifauxiliaryelectricheatersareinstalled,increasetheheatingsetpointuntiltheelectricheatbanksaresequencedon.
All stages of the auxiliary heater should be sequenced on when the thermostat is in the Emergency Heat mode.
Check amperage of each element.
15. Adjusttheheatingsetpointbelowroomtemperatureandverifythatthecompressorandwatervalveorlooppumps
deactivate.
16. Duringalltesting,checkforexcessivevibration,noiseorwaterleaks.Correctorrepairasrequired.
17. Setsystemtodesirednormaloperatingmodeandsettemperaturetomaintaindesiredcomfortlevel.
18. Instructtheowner/operatorintheproperoperationofthethermostatandsystemmaintenance.
Note:CompletetheEquipmentStart-Up/CommissioningCheckSheetduringthisprocedure.Refertothermostatoperatinginstructionsand
complete the startup procedure.
Startup Steps
Note:Becertaintolloutandforwardallwarrantyregistrationpapers.
Unit Startup
Before Powering Unit, Check The Following:
Note: Remove and discard the two compressor hold down shipping bolts located at the front and rear of the compressor mounting bracket. The bolts
can then be discarded.

Envision R-410A Specifications

General

Brand	Envision
Model	R-410A
Category	Heat Pump
Language	English