WaterFurnace Envision Low Sill User Manual
LOW SILL CONSOLE
Geothermal/Water Source Heat Pump
• R-410A Refrigerant
• 0.75-1.5 Ton Single Speed
Installation Information
Water Piping Connections
Electrical
Startup Procedures
Troubleshooting
Preventive Maintenance
Envision Low Sill Console Installation Manual
IM1012CNA 03/14
Table of Contents
Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Installation Steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14
System Cleaning and Flushing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Open Loop Ground Water Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Blower Performance Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-25
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26-34
Unit Startup Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Unit Startup Checklist/Unit Startup Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Compressor and Thermistor Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Refrigerant Circuit Guideline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Heat of Extraction/Rejection Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Reference Calculations and Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Startup/Troubleshooting Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Revision Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
LC S 09 L 0 1 1 C
4-5 6 7 8 9 10
Vintage
* - Factory Use Only
Non-Standard Option Details
SS – Standard Option
Air Coil/Insulation
Option
5 – AlumiSeal
TM
/Extended Range
8 – No Coating/Standard Range
Sound Kit
A – None
B – Blanket
Future Option
N
– None
Future Option
N – None
Water Coil Option
Thermostat Control
Rev.:
N
11
31-2
N B 5 SS
12 13 14
15-16
*
17
Model Nomenclature
Model
LC – Envision Series
Low-Sill Console
Cabinet Configuration
C – Chassis Only
W – Chassis with Cabinet
S – Chassis Slope Top
Unit Capacity
09, 12, 15, 18
Piping Option
L – Left
R - Right
Voltage
0 – 208-230/60/1
2 – 265/60/1
9 – 115/60/1 (09 & 12)
Unit Control
1 – CCM
2 – Versatec Microprocessor
4 – FX10 Std. w/o Communication
5 – FX10 w/Open N2 Com Card
6 – FX10 w/Lonworks Com Card
7 – FX10 w/BacNet Com Card
C – Copper
N - CuproNickel
1 – Unit Mounted T-Stat
2 – Remote Wall-Mounted T-Stat
02 March 2014D
NOTES: Chassis only available with left piping option.
FX10 option is only available with remote wall-mounted thermostat control.
09-12 only available with PSC blower.
15-18 only available with 3-Speed ECM blower.
4
General Installation Information
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Safety Considerations
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 servicing heating and air conditioning
equipment can be hazardous due to system pressure and
electrical components. Only trained and qualified service
personnel should install, repair or service heating and air
conditioning equipment. Untrained personnel can perform
the basic maintenance functions of cleaning coils and
cleaning and replacing filters. All other operations should
be performed by trained service personnel. When working
on heating and air conditioning equipment, observe
precautions in the literature, tags and labels attached to the
unit and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work
gloves. Use a quenching cloth for brazing operations and
have a fire extinguisher available.
Moving and Storage
Move units in the normal “up” orientation. Do not stack
units. When the equipment is received, all items should be
carefully checked against the bill of lading to be sure all
crates and cartons have been received. Examine units for
shipping damage, removing the units from the packaging
if necessary. Units in question should also be internally
inspected. If any damage is noted, the carrier should make
the proper notation on the delivery receipt, acknowledging
the damage.
Water Piping
The proper water flow must be provided to each unit
whenever the unit operates. To assure proper flow, use
pressure/temperature ports to determine the flow rate.
These ports should be located at the supply and return
water connections on the unit. The proper flow rate cannot
be accurately set without measuring the water pressure
drop through the refrigerant-to-water heat exchanger.
All source water connections on commercial units are
fittings that accept a male pipe thread (MPT). Insert the
connectors by hand, then tighten the fitting with a wrench
to provide a leakproof joint. When connecting to an open
loop (groundwater) system, thread any copper MPT fitting
into the connector and tighten in the same manner as
described above.
Refrigerant Systems
To maintain sealed circuit integrity, do not install service
gauges unless unit operation appears abnormal. Compare
the change in temperature on the air side as well as the
water side to the Unit Operating Parameters tables. If the
unit’s performance is not within the ranges listed, and the
airflow and water flow are known to be correct, gauges
should then be installed and superheat and subcooling
numbers calculated. If superheat and subcooling are outside
recommended ranges, an adjustment to the refrigerant
charge may be necessary.
5
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Dimensional Data - Flat Top Cabinet
LCW09-18
Right Hand Cabinet
TOP
D E
Left Hand Cabinet
F
Flat Top
Configuration
09-12
15-18
A
FRONT
Right return cabinet shown in dimensional views
Overall Cabinet
ABCDE FG
Width Depth Height
in. 45.1 10.8 22.5 9.2 35.0 6.1 2.3
cm. 114.6 27.4 57.2 23.4 88.9 15.6 5.8
in. 50.0 12.8 22.5 9.2 35.0 6.1 3.3
cm. 127.0 32.4 57.2 23.4 88.9 15.6 8.3
Grille
Lid
Grille
Length
Grille
Grille
Width
B
G
C
SIDE
6
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Dimensional Data - Slope Top Cabinet
LCS09-18
TOP
Left Hand CabinetRight Hand Cabinet
F
Slope Top
Configuration
09-12
15-18
D E
A
C
H
FRONT
Right return cabinet shown in dimensional views
Overall Cabinet
ABCDEFGH
Width Depth Height
in. 45.1 10.8 24.0 9.2 35.0 6.1 2.0 22.4
cm. 114.6 27.4 61.0 23.4 88.9 15.6 5.1 56.9
in. 50.0 12.8 24.0 9.2 35.0 6.1 2.0 22.5
cm. 127.0 32.4 61.0 23.4 88.9 15.6 5.1 57.2
Grille
Lid
Grille
Length
Grille
Grille
Width
80°
B
G
SIDE
7
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Dimensional Data - Chassis
LCC09-12
WATER OUT
1/2 in. FPT
WATER IN
1/2 in. FPT
LCC15-18
21.7
17.6
9.5
10.2
2.1
0.8
2.1
8.6
CONDENSATE
DRAIN CONNECTION
2.1
1.5
2.1
25.4 AIR FLOW
26.3
BLOWER ACCESS PANEL COMPRESSOR
38.4
12.0
ACCESS PANEL
21.7
17.6
9.6
1.0
12.1
2.10
WATER OUT
1/2 in. FPT
WATER IN
1/2 in. FPT
2.1
8.6
33.1 AIR FLOW
42.7
33.6 9.1
1.5
1.5
8
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Dimensional Data - Controls Detail: Flat Top Chassis
Left Return Right Return
Wall Mount For Chassis
w/Flat T op Cabinets
Blower Option Switch
Control Panel
(Remove For Access
To Control Box)
Control Panel (Remove For
Access To Control Box)
Blower Option Switch
Handy Box
Optional
Fused/
Non-fused
Disconnect
Optional
Ball Valves
Optional
Hose Kits
Air Filter
Air Filter
Dimensional Data - Controls Detail: Flat Top Chassis
Wall Mount For Chassis
w/Flat T op Cabinets
Handy Box
Optional
Fused/
Non-fused
Disconnect
Optional
Ball Valves
Optional
Hose Kits
Optional
Fused/
Non-fused
Disconnect
Optional
Hose Kits
Wall Mount
Attached to Unit
Optional
Ball Valves
Control Panel (Remove For
Access To Control Box)
Air Filter
Handy Box
Blower Option Switch
(On Side Panel)
Blower Option Switch
(On Side Panel)
Control Panel (Remove For
Access To Control Box)
Air Filter
Handy Box
Optional
Ball Valves
Wall Mount
Attached to Unit
Optional
Hose Kits
Optional
Fused/
Non-fused
Disconnect
9
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Physical Data
8 x 22
23 x 9.6
Console
[203 x 762]
[813 x 244]
6.0 x 6.5
[152 x 165]
8 x 30
32 x 9.6
6.0 x 6.5
[152 x 165]
N/A
8 x 30
[203 x 762]
32 x 9.6
[813 x 244]
12/13/13
Model
Compressor (1 each) Rotary
Factory Charge R-410A, oz [kg] 27 [0.77] 27 [0.77] 36 [1.02] 34 [1.0]
Blower Motor & Blower
Blower Motor Type/Speeds
Blower Motor - hp [W]
Blower Wheel Size (Dia x W), in. [mm]
Blower Motor Type/Speeds PSC 2 Speeds N/A
Blower Motor - hp [W] PSC 1/16 [44.7] 1/16 [44.7] N/A
Blower Wheel Size (Dia x W), in. [mm] PSC
Coax and Water Piping
Water Connection Size - FPT - in [mm] 1/2 [12.7] 1/2 [12.7] 1/2 [12.7] 1/2 [12.7]
Coax & Piping Water Volume - gal [l] 0.15 [0.6] 0.18 [0.7] 0.15 [0.6] 0.18 [0.7]
Air Coil
Air Coil Dimensions (H x W), in. [mm]
2
Air Coil Total Face Area, ft
Air Coil Tube Size, in [mm] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5] 3/8 [9.5]
Air Coil Number of Rows 3 3 4 4
Filter Standard - Throwaway, in [mm]
Weight - Packaged, lb [kg] 200 [91] 205 [93] 215 [98] 220 [100]
[m2] 1.2 [0.114] 1.2 [0.114] 1.7 [0.16] 1.7 [0.16]
3-Spd
ECM
3-Spd
ECM
3-Spd
ECM
09 12 15 18
N/A 3 Speeds
N/A 1/4 [186] 1/4 [186]
N/A
5.75 x 5.50
[146 x 140]
8 x 22
[203 x 559]
23 x 9.6
[584 x 244]
5.75 x 5.50
[146 x 140]
[203 x 559]
[584 x 244]
10
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Installation Steps
Step 1: Unpack Equipment and Inspect for Damage
Step 2: Determine Equipment Location
• Choose level flooring surface (Correctable with shims. Do not pitch towards drain.)
• Location of wall support and fasteners required to secure chassis backplate.
• Easy access for both installation and service.
• Consider availability and ease of wiring, water piping and condensate drain.
• No obstructions to block airflow in front of the unit.
Step 3: Mark Unit Position
• Ensure that floor is level. If shims are required, make sure that the entire compressor compartment area is uniformly
shimmed and that the backplate mounting height is increased by the thickness of the shims used.
• Position backplate in desired equipment location. To further reduce the operating sound level of the unit, 1/8-inch thick
rubber matting may be placed under the chassis to eliminate vibration on hard flooring surfaces. (Make sure back plate
is level).
• Mark and cut floor or wall penetrations for electrical wiring, water and condensate piping.
Optional Electrical Disconnect
• Mark and cut wall penetrations for field fabricated outside air duct sleeve.
• Align mounting holes with backplate and attach with screws supplied.
Figure 1
Fused Electrical
Disconnect (Optional)
Wall Penetration
for Water Connection
Floor Penetration for
Water Connection
Wall Mount for Chassis
w/Flat Top Cabinets
19.0
Centered
w/ Cabinet
Water Out
P/T Plugs (Optional)
Water In
Ball Valves
(Optional)
Optional Hoses
Condensate
Drain Location
Low Sill
Chassis
Low Sill Flat
Top Cabinet
11
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Installation Steps cont.
Step 4: Provide Water and Condensate Drain Connections
• A two-pipe reverse return piping configuration is recommended as it equalizes the piping circuit lengths and delivers
even water flow to each unit. A direct return piping configuration may be used, but it may be difficult to achieve and
maintain proper water flow to the units.
• An air vent must be installed in the water distribution system.
• The supply and return water piping should be run through the wall or floor penetration and terminate with a ball valve.
The piping material used must comply with all local codes.
• Refer to: System Cleaning and Flushing procedures.
Pipe Locations
Figure 2
Console Cabinet
Console Chassis
Water Connections
Fused Electrical
Disconnect (Optional
Wall Mounted)
24V Accessory
Target Area for
Wall Penetration
5 in. x 8 in. Area Approx.
1/2 in. from Edge of
Chassis 3 in. from Floor
Cabinet Extends
to this Point
5 in. x 8 in. Area Approx.
1/2 in. from Edge of
Chassis 1 in. from Front
Edge of Cabinet
Electrical
Junction
Box
Condensate
Drain
Location
Target Area
for Floor
Penetration
12
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Installation Steps cont.
Step 5: Provide Line Voltage Wiring
• Check unit data plate located on control side of chassis for ampacity and fuse size.
• Remove electrical knockouts from chassis backplate.
• Run line voltage wiring through knockout and secure wiring to backplate or disconnect.
Step 6: Chassis Installation
• Level and secure backplate to wall.
• Position the chassis against back plate. Drive (2) screws through holes in lip of backplate into top flange of chassis.
Step 7: Final Electrical Connection
• Install flexible electrical conduit between the backplate or electrical disconnect and the unit mounted junction box.
• Make final wiring connections in disconnect and junction box, taking care to replace all covers when done. Wiring must
conform to NEC and/or all local codes. Refer to Electrical Data.
NOTE: It is necessary to make final wiring connections prior to securing unit chassis to back plate on right-hand piping
models with electrical disconnect.
Step 8: Final Water Connection
• For ease of installation and sound attenuation, high pressure (recommended) flexible hoses with a swivel fitting should
be provided. Apply Teflon® tape or sealant compound to threaded hose fittings.
• Combination shut-off/balancing valves should be installed on both the supply and return water lines of the unit.
• Flow control valves should be installed on the water discharge line.
• It is recommended that P/T ports be installed on the supply and return water lines.
Step 9: Set Unit Controls
• Locate the “continuous fan/cycle fan” switch within the electrical compartment of the chassis and set to desired position.
(Remote wall thermostat units do not use this optional switch.)
• Optional Control SettingsRemote Thermostat - Run low voltage wiring from unit to the desired thermostat location.
Mount and wire thermostat according to manufacturer’s recommendations.
Step 10: Secure the Cabinet Cover
• Position and lower cabinet over unit chassis. Apply pressure to the front of the cabinet to ensure that the back lip of the
cabinet hooks over the tabs provided on the backplate.
• Secure cabinet to chassis with mounting screws provided.
Step 11: Perform Final Unit Check
• Measure the pressure drop across the water coil and monitor water or air temperatures in both heating and cooling
modes. The measured values should fall within the acceptable ranges shown in the Startup Performance table.
13
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Installation Steps cont.
Field Converting Console
Chassis is normally configured with controls on right end and piping on left end (see Figure 3 top view). In this position
panel number 1 would be positioned against wall or back plate. Unit may also be turned 180° against wall or back plate. In
this position controls will be on left end and piping on right end panel number 2 would be positioned against wall or back
plate. Chassis must be enclosed with an approved cabinet enclosure.
1. Remove 4 screws from front kick panel on cabinet.
2. Remove cabinet from chassis by lifting and sliding
cabinet straight up.
3. Remove grille assembly from cabinet by removing 4
screws from brackets located on the bottom of the grille
and door assemblies.
4. Replace grille/door assemblies into cabinet
repositioning pieces 1, 2, and 3 into the locations directly
opposite the original positions. Secure by replacing
mounting brackets. (Note: Be sure that louvers on the
grille assembly are facing the proper direction when
replacing the grille section.)
5. Replace grille/frame assembly into cabinet, and secure
by replacing mounting brackets.
6. Replace cabinet by sliding it down over the top of the
chassis.
7. Remove tab on leg that extends into return air opening.
When the grille side of the cabinet is flat against chassis
there will be 4 holes that line up in the leg section. Only
use 1 hole for alignment for opposite side of grille. (Note:
The tab can be removed by twisting back and forth until
it breaks off.)
8. Remove plastic strip from tab and replace on rough
edge that the tab was removed from.
9. Replace screws in font kick panel to secure cabinet to
chassis.
10. Mount filter bracket in designated opening area. (Note:
The filter bracket will only fit in one direction if cabinet
is installed properly.)
6
7
2
3
1
4
5
2
3
6
7
5
5
4
LEFT RETURN
5
1
RIGHT RETURN
14
System Cleaning and Flushing
ENVISION LOW SILL CONSOLE INSTALLATION MANUAL
Cleaning and Flushing
Prior to start up of any heat pump, the water circulating system must
be cleaned and flushed of all dirt and debris.
If the system is equipped with water shutoff valves, the supply and
return runouts must be connected together at each unit location (This
will prevent the introduction of dirt into the unit, see Figure 7). The
system should be filled at the water make-up connection with all air
vents open. After filling, vents should be closed.
The contractor should start the main circulator with the pressure
reducing valve makeup open. Vents should be checked in sequence
to bleed off any trapped air and to verify circulation through all
components of the system.
As water circulates through the system, the contractor should check
and repair any leaks found in the piping system. Drain(s) at the
lowest point(s) in the system should be opened for initial flush and blowdown, making sure water fill valves are set at the
same rate. Check the pressure gauge at the pump suction and manually adjust the make-up water valve to hold the same
positive pressure both before and after opening the drain valves. Flushing should continue for at least two hours, or longer
if required, until drain water is clean and clear.
The supplemental heater and/or circulator pump, if used, should be shut off. All drains and vents should be opened to
completely drain the system. Short-circuited supply and return runouts should now be connected to the unit supply and
return connections.
Figure 7: Flushing with Water
Shutoff Valve Equipped Systems
Return Runout
Supply Runout
Mains
Rubber Hose
Runouts Initially
Connected Together
Refill the system with clean water. Test the system water for acidity and treat as required to leave the water slightly alkaline
(pH 7.5 to 8.5). The specified percentage of antifreeze may also be added at this time. Use commercial grade antifreeze
designed for HVAC systems only. Environol™ brand antifreeze is recommended..
Once the system has been filled with clean water and antifreeze (if used), precautions should be taken to protect the
system from dirty water conditions. Dirty water will result in system-wide degradation of performance, and solids may clog
valves, strainers, flow regulators, etc. Additionally, the heat exchanger may become clogged which reduces compressor
service life and can cause premature unit failure.
In boiler/tower application, set the loop control panel set points to desired temperatures. Supply power to all motors
and start the circulating pumps. After full flow has been established through all components including the heat rejector
(regardless of season), air vented and loop temperatures stabilized, each of the units will be ready for check, test and start
up and for air and water balancing.
Ground Source Loop System Checkout
Once piping is completed between the unit pumping system and ground loop, final purging and charging of the loop is
needed. A high pressure pump is needed to achieve adequate flow velocity in the loop to purge air and dirt particles from
the loop itself. Antifreeze solution is used in most areas to prevent freezing. Flush the system adequately to remove as
much air as possible; then pressurize the loop to a static pressure of 40-50 psi (summer) or 50-75 psi (winter). This is
normally adequate for good system operation. Loop static pressure may decrease soon after initial installation, due to pipe
expansion and loop temperature change. Running the unit for at least 30 minutes after the system has been completely
purged of air will allow for the “break-in” period. It may be necessary to adjust static loop pressure (by adding water) after
the unit has run for the first time. Loop static pressure will also fluctuate with the seasons. Pressures will be higher in the
winter months than during the cooling season. This fluctuation is normal and should be considered when charging the
system initially.
Ensure the pump provides adequate flow through the unit by checking pressure drop across the heat exchanger.
Usually 2.25-3.0 gpm of flow per ton of cooling capacity is recommended in earth loop applications.
15
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