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- Envision2 Compact
- Installation Manual
WaterFurnace Envision2 Compact Installation Manual
Summary of Envision2 Compact
Page 1
Im1025an 01/15 installation information water piping connections hot water connections electrical startup procedures troubleshooting preventive maintenance compact water source/geothermal heat pump - 50 hz • r-410a refrigerant • commercial 005 to 017 kw en vision 2 c ompact ins tallation manual.
Page 3: Table of Contents
Envision 2 compact - 50 hz installation manual table of contents model nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 general installation information . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 4: Model Nomenclature
4 envision 2 compact - 50 hz installation manual model nomenclature 1-3 4 5-7 8 9 10 model type nbk – envision 2 compact 50hz cabinet configuration v – vertical h - horizontal unit capacity (kw) single speed 005, 017 dual-capacity 006, 009, 012, 015 discharge configuration t – top (vertical) e – end...
Page 5
5 envision 2 compact - 50 hz installation manual warning: before performing service or maintenance operations on a system, turn off main power switches to the indoor unit. If applicable, turn off the accessory heater power switch. Electrical shock could cause personal injury. Installing and servicin...
Page 6: Vertical Dimensional Data
6 envision 2 compact - 50 hz installation manual vertical dimensional data 1 2 8 3 4 access panel air coil air coil side air coil side air coil 5 power supply 1 in (25.4 mm) knockout low voltage 1/2" (12.7 mm) knockout condensate 3/4 in pvc glue socket front front right view - right return left view...
Page 7
7 envision 2 compact - 50 hz installation manual ll 1.8 in. [4.6 cm] alternative power location disconnect located on this side for a right return disconnect location power supply vertical shown in left return configuration vertical models ll 005 36.3 006 38.9 009 36.3 012 36.3 015 36.3 017 external...
Page 8: Horizontal Dimensional Data
8 envision 2 compact - 50 hz installation manual horizontal dimensional data right return end discharge left return end discharge end discharge end discharge side discharge side discharge right return left return front front cmp cmp ap ap condensate "x" pvc size condensate "x" pvc size rr front view...
Page 9
9 envision 2 compact - 50 hz installation manual 2.1 in. [5.3 cm] kk disconnect located on this side for a left return disconnect location power supply horizontal shown in right return configuration horizontal models kk 005 23.4 006 23.4 009 28.4 012 25.9 015 28.4 017 25.9 dimensions in cm 6/25/12 h...
Page 10: Installing Horizontal Units
10 envision 2 compact - 50 hz installation manual installing horizontal units remove and discard the compressor hold down shipping bolt located at the front of the compressor mounting bracket prior to setting the unit in place. Horizontal units are available with side or end discharge. Note : left (...
Page 11: Hanger Bracket Locations
11 envision 2 compact - 50 hz installation manual b c a h e d g f left d e f g right vibration isolator w asher hex nuts (not supplied) bolt and lockwasher 3/8” threaded rod (not supplied) compressor section compressor section air handler section air handler section h hanger bracket dimensions model...
Page 12: Duct System
12 envision 2 compact - 50 hz installation manual an air outlet collar is provided on vertical top flow units and all horizontal units to facilitate a duct connection. A flexible connector is recommended for discharge and return air duct connections on metal duct systems. Uninsulated duct should be ...
Page 13: Water Quality
13 envision 2 compact - 50 hz installation manual in ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be present, a closed loop system is recommended. The heat exchanger coils in ground water systems may, over a period of time, lose heat exch...
Page 14
14 envision 2 compact - 50 hz installation manual typical open loop piping is shown below. Always maintain water pressure in the heat exchanger by placing water control valves at the outlet of the unit to prevent mineral precipitation. Use a closed, bladder-type expansion tank to minimize mineral fo...
Page 15
15 envision 2 compact - 50 hz installation manual the heat reclaiming hot water generator coil is of vented double-wall copper construction and is suitable for potable water. To maximize the benefits of the hot water generator a minimum 189 l water heater is recommended. For higher demand applicatio...
Page 16
16 envision 2 compact - 50 hz installation manual caution: never operate the hwg circulating pump while dry. If the unit is placed in operation before the hot water generator piping is connected, be sure that the pump wires are disconnected from the contactor. Hot water generator connections cont. H...
Page 17: Electrical Connections
17 envision 2 compact - 50 hz installation manual 220 volt operation all 220-240 units are factory wired for 240 volt operation. For 220 volt operation, the red and blue transformer wires must be switched on terminal strip ps. Caution: when installing a unit with a variable speed ecm blower motor in...
Page 18: Electrical Data
18 envision 2 compact - 50 hz installation manual electrical data 5-speed motor model rated voltage voltage min/max compressor blower motor fla total unit fla min circ amp max fuse/hacr breaker mcc rla lra lra* single speed 005 220-240/50/1 198/264 13.1 5.5 24.0 9.6 4.1 9.6 11.0 15 017 220-240/50/1 ...
Page 19: Blower Performance Data
19 envision 2 compact - 50 hz installation manual 5-speed ecm constant torque motors the 5-speed ecm is a ‘constant torque’ ecm motor and delivers air flow similar to a psc but operates as efficiently as a variable speed ecm motor. Because it is an ecm motor, the 5-speed ecm can ramp slowly up or do...
Page 20
20 envision 2 compact - 50 hz installation manual variable speed ecm motor model max esp (pa) blower size motor kw airflow dip switch settings 1 2 3 4 5 6 7 8 9 10 11 12 005 124.50 229 x 178 0.37 142 189 236 283 330 378 l m h 006 124.50 229 x 178 0.37 189 236 283 330 378 425 472 519 566 l m h 009 12...
Page 21: Wiring Schematics
21 envision 2 compact - 50 hz installation manual wiring schematics to abc - p8 yellow brown green blue white black orange red devices must be wired in daisy chain configuration gnd rnet+ rnet- +12v gnd rnet+ rnet- +12v gnd rnet+ rnet- +12v zs sensor 1 addr: 0 1 2 3 4 5 6 7 8 zs sensor 2 addr: 1 zs ...
Page 22: Wiring Schematics Cont.
22 envision 2 compact - 50 hz installation manual wiring schematics cont. Commercial aurora, upc with x13 motor – 380-420/50/31 transformer blue 460v black 24v 2 1 3 isolation valve red (51) green (50) white (52) note 2 note 2 red (53) cc violet (14) black (15) or ang e (01) orange (02 ) condensate ...
Page 23: Wiring Schematics Cont.
23 envision 2 compact - 50 hz installation manual wiring schematics cont. Commercial aurora, upc with x13 motor – 380-420/50/31 1 1 – optional, factory installed unit mounted disconnect. 2 – optional, factory installed internal isolation valve. 3 – optional, factory installed phase guard 4 – optiona...
Page 24: Wiring Schematics Cont.
24 envision 2 compact - 50 hz installation manual wiring schematics cont. Transformer black 24v 2 1 3 isolation valve red (51) green (50) white (52) note 2 note 2 red (53) cc 470 470 resistor violet (14) black (15) orange (01) orange (02) condensate brown (23) gree n rv hp lp t fd rv blue (07) blue ...
Page 25: Wiring Schematics Cont.
25 envision 2 compact - 50 hz installation manual wiring schematics cont. 1 – optional, factory installed unit mounted disconnect. 2 – optional, factory installed internal isolation valve. 3 – optional, factory installed phase guard 4 – optional, factory installed phase guard. The yellow transformer...
Page 26: Wiring Schematics Cont.
26 envision 2 compact - 50 hz installation manual wiring schematics cont. Aurora base control 420/50/3 variable speed ecm transformer blue 420v black yellow c y-out y pgm yellow (91) black/white (92) note 4 black/white yellow black/white 24v ecm2 fan motor p12 p11 2 3 4 5 1 1 3 12 15 10 pwm c1 c2 r ...
Page 27: Wiring Schematics Cont.
27 envision 2 compact - 50 hz installation manual wiring schematics cont. Aurora base control 420/50/3 variable speed ecm 1 1 – optional, factory installed unit mounted disconnect. 2 – optional, factory installed internal isolation valve. 3 – optional, factory installed phase guard 4 – optional, fac...
Page 28
28 envision 2 compact - 50 hz installation manual aurora base control control features single or dual capacity compressors either single or dual capacity compressors can be operated. Variable speed ecm blower motor option a traditional variable speed ecm blower motor can be driven directly using the...
Page 29
29 envision 2 compact - 50 hz installation manual access relay operation sw2-4 sw2-5 cycle with blower on on cycle with compressor off off water valve slow opening on off (reserved) off on cycle with blower - the accessory relay will cycle with the blower output. Cycle with compressor - the accessor...
Page 30
30 envision 2 compact - 50 hz installation manual condensate overflow - fault is recognized when the impedance between this line and 24 vac common or chassis ground drops below 100k ohms for 30 seconds continuously. Freeze detection - set points shall be either -1.1°c or -9.4°c. When the thermistor ...
Page 31
31 envision 2 compact - 50 hz installation manual load shed the ls input disables all outputs with the exception of the blower output. When the ls input has been cleared, the anti-short cycle timer and random start timer will be initiated. Input must be tied to common to activate. Led displays these...
Page 32
32 envision 2 compact - 50 hz installation manual the aurora unitary protocol converter (upc) is designed to add-on to any aurora based heat pump control. The aurora unitary protocol convertor (upc) is designed to allow water source heat pumps to be integrated into building automation systems (bas) ...
Page 33
33 envision 2 compact - 50 hz installation manual aurora upc features • rugged enclosure made of ge c2950 cycoloy plastic • built-in surge transient protection circuitry • operating range of -20° to 140°f; 10 to 95% relative hu- midity, non-condensing • onboard cr123a battery has a life of 10 years ...
Page 34
34 envision 2 compact - 50 hz installation manual port 1a is used to communicate to the building automation system (bas). This port’s settings are configured through the onboard dip switches. Port 2 is used to com- municate to the au- rora base controller (abc). Port 1b is used for the lonworks plug...
Page 35
35 envision 2 compact - 50 hz installation manual 1. Leaving air temperature (lat) sensor – this 10 kohm ntc sensor is factory installed on all upc equipped heat pumps. It typically is attached to wiring inside the blower cabinet on the suction side of the blower. This sensor is attached on abc fp2 ...
Page 36
36 envision 2 compact - 50 hz installation manual status led (led3, green) description of operation fault led, green normal mode on control is non-functional off test mode slow flash lockout active fast flash dehumidification mode flash code 2 load shed flash code 5 emergency shutdown flash code 6 o...
Page 37
37 envision 2 compact - 50 hz installation manual 1. Accessory relay2 – a second, configurable, accessory relay on the axb is provided that can be cycled with the compressor 1 or 2 , blower, or the dehumidifier (dh) input. This is to complement the accessory 1 relay on the abc board. 2. Analog out –...
Page 38
38 envision 2 compact - 50 hz installation manual 1. Energy monitoring (standard sensor kit on ‘advanced’ models) - the energy monitoring kit includes two current transducers (blower and electric heat) added to the existing two compressor sensors so that the complete power usage of the heat pump can...
Page 39
39 envision 2 compact - 50 hz installation manual zs series rnet sensor overview the zs series line of intelligent zone sensors provides the function and flexibility you need to manage the conditions important to the comfort and productivity of the zone occupants. The zs sensors are available in a v...
Page 40
40 envision 2 compact - 50 hz installation manual rnet sensor physical and electrical data sensing element range accuracy temperature (on non-humidity models) -4° to 122° f (-20° c to 50° c) ±0.35° f (0.2° c) temperature (on humidity models) 50° f to 104° f (10° c to 40° c) ±0.5° f (0.3° c) humidity...
Page 41: Unit Startup
41 envision 2 compact - 50 hz 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 flushed. • air is purged from closed loop system. • isolation valves are open, wa...
Page 42: Operating Parameters
42 envision 2 compact - 50 hz installation manual operating parameters single speed models entering water temp °c water flow l/s per kw cooling -- no hot water generation suction pressure kpa discharge pressure kpa superheat subcooling water temp rise °c air temp drop °c db -1.1 0.09 793 - 862 1034 ...
Page 43: Operating Parameters Cont.
43 envision 2 compact - 50 hz installation manual operating parameters cont. Dual capacity models first stage operation entering water temp °c water flow l/s per kw cooling -- no hot water generation suction pressure kpa discharge pressure kpa superheat subcooling water temp rise °c air temp drop °c...
Page 44: Pressure Drop
44 envision 2 compact - 50 hz installation manual model l/s pressure drop (kpa) valve l/s cv pressure drop (kpa) -1.11°c 10°c 21.1°c 32.2°c 43.3°c 005 0.19 11.0 11.0 10.3 10.3 9.7 3/4” 0.19 9.9 0.63 0.25 20.0 20.0 19.3 19.3 18.6 0.25 10.1 1.10 0.32 29.0 29.0 28.3 27.6 26.9 0.32 10.4 1.59 0.38 41.4 4...
Page 45: Reference Calculations
45 envision 2 compact - 50 hz installation manual note: * when using water. Use 4.1 for 15% methanol/water or environol solution. Reference calculations heating calculations: cooling calculations: lwt = ewt + lat (db) = eat (db) - lc = tc - sc s/t = hr wf x 500 sc af x 1.08 sc tc lwt = ewt - lat = e...
Page 46: Compressor Resistance
46 envision 2 compact - 50 hz installation manual compressor resistance thermistor temperature (°c) microprocessor resistance (ohms) fx10 resistance (ohms) -15 75757-70117 746-770 -10 57392-53234 775-803 -5 43865-40771 808-836 0 33809-31487 841-869 5 26269-24513 875-903 10 20570-19230 910-938 15 162...
Page 47
47 envision 2 compact - 50 hz installation manual heat of extraction/rejection data model l/s heat of extraction (kw) heat of rejection (kw) -1.11°c 10°c 21.1°c 32.2°c -1.11°c 10°c 21.1°c 32.2°c 43.3°c 005 full load 0.19 3.34 4.07 5.60 6.74 6.33 6.0 0.25 2.96 3.58 4.34 5.71 6.2 6.83 6.36 6.0 5.9 0.3...
Page 48: Troubleshooting
48 envision 2 compact - 50 hz installation manual should a major problem develop, refer to the following information for possible causes and corrective steps. If compressor won’t run: 1. The fuse may be open or the circuit breaker is tripped. Check electrical circuits and motor windings for shorts o...
Page 49
49 envision 2 compact - 50 hz installation manual startup and troubleshooting form check one start up/check-out for new installation t troubleshooting problem:___________________________________ t 1. Flow rate in l/s (source side heat exchanger) water in pressure: a.______ kpa water out pressure: b....
Page 50: Heating Cycle Analysis
50 envision 2 compact - 50 hz installation manual heating cycle analysis suction discharge compressor rv source coax fd ______kpa = ______sat°c ______°c ______kpa = ______sat°c ______°c ______°c liquid line unit amp draw line voltage loop: open closed subcooling superheat note: do not attach refrige...
Page 51: Preventive Maintenance
51 envision 2 compact - 50 hz installation manual water coil maintenance 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 infiltrate the water line. Lines should always be airtight. 2. Keep the system under pressure at all ti...
Page 52: Service Parts
52 envision 2 compact - 50 hz installation manual service parts part description single speed vertical units dual capacity vertical units 005 017 006 009 012 015 c ompr es sor compressor 220-240/50/1 34p593-03 34p561-09 34p640-02 34p641-02 34p642-02 34p643-01 compressor 380-420/50/3 n/a 34p646-04 34...
Page 53: Revision Guide
53 envision 2 compact - 50 hz installation manual revision guide pages: description: date: by: all released upc control option 19 jan 2015 ma all updated with all-aluminum air coils 21 may 2014 ds 18 updated compressor lra with intellistart 31 jul 2013 ds all updated nomenclature to reflect new ecm ...
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Manufactured by waterfurnace international, inc. 9000 conservation way fort wayne, in 46809 www.Waterfurnace.Com ©2015 waterfurnace international, inc., 9000 conservation way, fort wayne, in 46809-9794. Waterfurnace has a policy of continual product research and development and reserves the right to...