Page 1
P/N 14001A-PRERAD
ES50LVS / ES90LVS
SELECT MULTI-SPEED
AIR HANDLER
Installation, Operation and Maintenance Manual
RADIANT
101 Sharer Road
Woodbridge, ON L4L 8Z3
Tel: 905-265-1527
Fax: 905-265-9739
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Contents
SAFETY INFORMATION ......................................................................................................... 3
INTRODUCTION ...................................................................................................................... 4
MODES OF OPERATION ......................................................................................................... 4
PERFORMANCE RATINGS ...................................................................................................... 5
QUICK START-UP PROCEDURES ......................................................................................... 9
INSTALLATION ........................................................................................................................ 9
Clearances ............................................................................................................................................. 9
Freeze Protection ................................................................................................................................ 10
Rear Piping Connections ..................................................................................................................... 10
Ecosmart Mounting ............................................................................................................................. 10
Plumbing ............................................................................................................................................. 11
Pump ................................................................................................................................................... 12
PIPING DIAGRAMS ................................................................................................................13
Tankless Water Heater Piping ............................................................................................................. 13
Boiler Piping ........................................................................................................................................ 14
ELECTRICAL ..........................................................................................................................15
Electrical Information .......................................................................................................................... 15
Thermostat Wiring .............................................................................................................................. 15
Ecosmart Wiring Diagram ................................................................................................................... 16
DIP SWITCH OPTIONS ...........................................................................................................18
Switch Locations ................................................................................................................................. 18
Heat CFM (ES50LVS) ............................................................................................................................ 19
Heat CFM (ES90LVS) ............................................................................................................................ 19
Cool CFM (ES50LVS) ............................................................................................................................ 19
Cool CFM (ES90LVS) ............................................................................................................................ 19
Options (ES50LVS and ES90LVS) ......................................................................................................... 20
SEQUENCE OF OPERATION ................................................................................................20
Multi-stage Operation ......................................................................................................................... 20
Single-stage Operation ........................................................................................................................ 21
Cooling Mode (Multi and Single stage) ............................................................................................... 21
Dehumidification ................................................................................................................................. 22
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Fan Mode ............................................................................................................................................ 22
Constant Low Fan Circulation ............................................................................................................. 22
Condenser Lockout ............................................................................................................................. 22
Pump Exerciser .................................................................................................................................... 23
SERVICE AND MAINTENANCE ................................ .............................................................23
Filter .................................................................................................................................................... 23
Coils ..................................................................................................................................................... 23
Fan and Motor .................................................................................................................................... 23
TROUBLESHOOTING ............................................................................................................24
Removing blower/control assembly ................................................................................................... 24
Thermostat call error .......................................................................................................................... 24
External pump does not run ............................................................................................................... 24
External pump is noisy at start-up ...................................................................................................... 24
Water heater temperature and pressure relief valve is weeping ...................................................... 24
Insufficient or no heat ......................................................................................................................... 25
Cold water at hot faucet ..................................................................................................................... 25
Fan runs for cooling but not for heating ............................................................................................. 25
Heating during standby mode ............................................................................................................ 25
WARRANTY ............................................................................................................................25
All technical information subject to change without notice.
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SAFETY INFORMATION
It is the responsibility of the installer to ensure the installation complies with all national and
local building codes and standards, in addition to the instructions outlined in this manual. All
applicable codes take precedence over any instructions made in this document.
This symbol indicates safety alerts. When you see this symbol on labels or in this
manual, be alert to the potential for personal injury. Understand and pay
particular attention to the signal words DANGER, WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation, which if not avoided, will result
in death or serious injury.
WARNING indicates a potentially hazardous situation, which if not avoided, could
result in death or serious injury.
CAUTION indicates a potentially hazardous situation, which if not avoided, may result
in minor or moderate injury. It is also used to alert against unsafe practices and
hazards involving only property damage.
WARNING - Improper installation may create a condition where the operation of
the product could cause personal injury or property damage. Only a qualified
contractor, installer or service agency should install this product. Improper
installation, adjustment, alteration, service or maintenance can cause injury or
property damage. Refer to this manual for assistance.
CAUTION - This product must be installed in strict compliance with the installation
instructions and any applicable local, state, and national codes including, but not
limited to; building, electrical, and mechanical codes.
WARNING - FIRE OR ELECTRICAL HAZARD. Failure to follow the safety warnings
exactly could result in serious injury, death, or property damage. A fire or electrical
hazard may result causing property damage, personal injury or loss of life.
WARNING - Hot water from a boiler used to satisfy heating requirements can be
heated to temperatures of 180°F. Parts containing water this hot can scald very
quickly. Use extreme caution when servicing or performing maintenance on any
parts containing hot water. To avoid severe burns, allow equipment to cool before
performing maintenance.
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INTRODUCTION
The ecosmart Select hydronic furnace is designed to maximize performance and comfort in
residential or light commercial applications. The ecosmart can be used with a variety of heat
sources such as boilers and water heaters and can be implemented in combo systems that
provide domestic hot water as well as space heating. Smart control systems within the
ecosmart allow extraction of maximum heat by allowing condensing high efficiency heat
sources to work at their maximum efficiency while providing ultimate comfort with unmatched
performance.
Simple, independent heat/cool and system parameters can easily be set by the installer to
adjust for a wide variety of installations.
The ecosmart features a 5-speed high efficiency EC fan motor and a pump control which can
operate a standard 120VAC pump or a variable speed pump from the 0-10V interface that
provides LO/MED/HI functionality.
MODES OF OPERATION
MULTI STAGE – fan runs through 3 speed stages with 5 minute intervals until the
selected speed is reached, and the pump if a variable type is installed, runs through 3
speeds in unison with the fan stages. Note if a standard pump is used, the pump will run
at a single speed only.
SINGLE STAGE – fan runs at the selected speed and the pump runs at a single speed.
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PERFORMANCE RATINGS
ES50LVS
Performance Data - Hot Water Capacities (BTUH) @ 70°F Entering Air Temperature
WATER PD
(FT-WG)
@140°F
ecosmart
Air Pressure Drop: 0.04 IWC
ES50LVS
Entering Water Temperature
CFM
GPM
110°F
120°F
130°F
140°F
150°F
160°F
170°F
180°F
300
3
10,640
13,320
16,010
18,700
21,400
24,100
26,800
29,500
4.38
4
10,910
13,650
16,400
19,160
21,910
24,670
27,430
30,190
4.83
5
11,070
13,850
16,640
19,430
22,220
25,020
27,820
30,610
7.23
400
3
13,170
16,510
19,850
23,200
26,550
29,910
33,270
36,640
4.38
4
13,640
17,080
20,530
23,980
27,440
30,900
34,370
37,840
4.83
5
13,920
17,430
20,940
24,460
27,990
31,510
35,040
38,570
7.23
500
3
15,370
19,260
23,170
27,090
31,020
34,950
38,890
42,840
4.38
4
16,050
20,100
24,170
28,250
32,330
36,420
40,520
44,620
4.83
5
16,470
20,630
24,790
28,970
33,150
37,340
41,530
45,720
7.23
600
3
17,280
21,660
26,070
30,490
34,920
39,360
43,810
48,260
4.38
4
18,190
22,800
27,420
32,050
36,700
41,350
46,010
50,670
4.83
5
18,770
23,510
28,270
33,040
37,810
42,600
47,390
52,180
7.23
700
3
18,950
23,780
28,620
33,480
38,360
43,250
48,140
53,040
4.38
4
20,110
25,210
30,330
35,470
40,620
45,770
50,940
56,110
4.83
5
20,850
26,130
31,420
36,730
42,050
47,380
52,710
58,050
7.23
800
3
20,440
25,650
30,880
36,140
41,410
46,690
51,980
57,280
4.38
4
21,840
27,390
32,960
38,550
44,150
49,770
55,390
61,020
4.83
5
22,740
28,510
34,300
40,100
45,920
51,740
57,580
63,420
7.23
900
3
21,760
27,310
32,900
38,500
44,120
49,760
55,410
61,070
4.38
4
23,400
29,360
35,340
41,340
47,360
53,390
59,430
65,490
4.83
5
24,480
30,690
36,930
43,190
49,460
55,750
62,040
68,340
7.23
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ES90LVS
Performance Data - Hot Water Capacities (BTUH) @ 70°F Entering Air Temperature
WATER PD
(FT-WG)
@140°F
ecosmart
Air Pressure Drop: 0.16” WC
ES90LVS
Entering Water Temperature
CFM
GPM
110°F
120°F
130°F
140°F
150°F
160°F
170°F
180°F
600
3
18,820
23,580
28,360
33,150
37,950
42,750
47,560
52,380
4.05
4
19,770
24,760
29,770
34,780
39,810
44,830
49,870
54,900
4.19
5
20,360
25,490
30,640
35,790
40,950
46,120
51,280
56,450
6.27
700
3
20,770
26,030
31,310
36,610
41,920
47,230
52,550
57,880
4.05
4
21,990
27,560
33,140
38,730
44,320
49,930
55,540
61,160
4.19
5
22,770
28,510
34,280
40,050
45,830
51,620
57,410
63,210
6.27
800
3
22,500
28,210
33,940
39,690
45,450
51,220
57,000
62,780
4.05
4
24,010
30,090
36,190
42,310
48,430
54,570
60,710
66,860
4.19
5
24,980
31,290
37,620
43,960
50,320
56,680
63,050
69,420
6.27
900
3
24,040
30,150
36,290
42,450
48,610
54,790
60,980
67,180
4.05
4
25,850
32,400
38,980
45,570
52,180
58,800
65,420
72,050
4.19
5
27,010
33,850
40,710
47,580
54,460
61,360
68,260
75,160
6.27
1,000
3
25,430
31,900
38,400
44,920
51,460
58,000
64,560
71,130
4.05
4
27,530
34,520
41,530
48,560
55,610
62,670
69,740
76,810
4.19
5
28,900
36,220
43,560
50,920
58,300
65,690
73,080
80,480
6.27
1,100
3
26,680
33,470
40,300
47,150
54,020
60,900
67,790
74,690
4.05
4
29,070
36,450
43,870
51,300
58,760
66,220
73,700
81,190
4.19
5
30,640
38,410
46,210
54,020
61,860
69,700
77,560
85,420
6.27
1,200
3
27,810
34,900
42,020
49,170
56,330
63,520
70,710
77,910
4.05
4
30,480
38,240
46,020
53,830
61,650
69,500
77,350
85,210
4.19
5
32,260
40,450
48,670
56,910
65,170
73,440
81,720
90,010
6.27
1,300
3
28,830
36,190
43,580
51,000
58,440
65,890
73,360
80,840
4.05
4
31,790
39,880
48,000
56,150
64,330
72,520
80,720
88,930
4.19
5
33,770
42,350
50,960
59,600
68,250
76,920
85,610
94,300
6.27
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SPECIFICATIONS
PHYSICAL DATA - INCHES
Model
Overall Dimensions
W x D x H
Supply
Opening
W x D
Side Return
Piping
Location
A B C D E F G H I J K ES50LVS
14.0
21.0
29.0
11.8
17.8
18.3
14.3
1.4
2.0
2.8
2.4
ES90LVS
21.0
21.0
29.0
18.8
17.8
18.3
14.3
1.4
2.0
2.8
2.4
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MODEL
ES50LVS
ES90LVS
DX Cooling Capacity (tons)
1 to 2
1.5 to 3.5
Power (Volts/Phase/Hz)
120/1/60
120/1/60
Cabinet Size W x D x H (in)
14 x 21 x 29
21 x 21 x 29
Supply Air Opening W x D (in)
11.8 X 17.8
18.8 x 17.8
Side Return Air Opening (in)
18.3 X 14.3
18.3 X 14.3
Recommended Filter Size (in)
16 x 20
16 x 20
Shipping Weight (lb)
85
95
Shipping Dimensions W x D x H (in)
15 x 24 x 30.5
22 x 24 x 30.5
ES50LVS ECM blower performance (amps/CFM)
SWITCH
SETTING
0.1” WC
0.2” WC
0.3”WC
0.4”WC
0.5”WC *
300CFM
0.73A
426CFM
0.80A
400CFM
0.86A
375CFM
0.94A
345CFM
0.99A
306CFM
400CFM
0.99A
508CFM
1.07A
482CFM
1.14A
457CFM
1.23A
433CFM
1.29A
405CFM
600CFM
1.86A
670CFM
1.92A
664CFM
2.01A
640CFM
2.08A
624CFM
2.17A
609CFM
700CFM
2.40A
760CFM
2.47A
746CFM
2.59A
730CFM
2.68A
715CFM
2.77A
704CFM
800CFM
3.19A
857CFM
3.26A
840CFM
3.37A
825CFM
3.44A
819CFM
3.53A
803CFM
ES90LVS ECM blower performance (amps/CFM)
SWITCH
SETTING
0.1” WC
0.2” WC
0.3”WC
0.4”WC
0.5”WC *
400CFM
0.82A
662CFM
0.88A
555CFM
0.95A
502CFM
1.08A
463CFM
1.11A
406CFM
600CFM
1.23A
779CFM
1.32A
730CFM
1.41A
693CFM
1.49A
650CFM
1.58A
613CFM
800CFM
1.88A
936CFM
1.99A
903CFM
2.08A
873CFM
2.19A
830CFM
2.26A
794CFM
1000CFM
2.84A
1119CFM
2.96A
1085CFM
3.07A
1053
3.30A
1023CFM
3.29A
996CFM
1200CFM
4.28A
1312CFM
4.40A
1278CFM
4.55A
1257CFM
4.62A
1232CFM
4.70A
1201CFM
* Test reference measured at 0.5”WC
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QUICK START-UP PROCEDURES
Refer to the installation instructions before following the start-up procedures.
1. Fill the system with water. Do not start the system.
2. Purge all air from the system. Isolation and purge valves are strongly recommended.
3. Purge all air from the space heating loop by closing the isolation valve on the return leg
of the loop and open the drain to purge air. Open the return leg isolation valve and
then close the drain valve.
4. Start the hot water generating equipment per the manufacturer’s recommendations.
Set the design water temperature to deliver the necessary amount of BTUs to the air
handler.
5. Once all air has been purged, turn on the power to the ecosmart and set the room
thermostat to heat and set the temperature high enough to initiate a call for heat. This
will energize the air handler an in turn the fan and pump.
6. Once the heat source is supplying hot water, check supply and return pipes for a
temperature difference to make sure there is flow. There should be a noticeable
difference in temperature between supply and return lines. Use caution when supply
water temperature is above 125°F / 51°C.
INSTALLATION
The installer must comply with all local and national code requirements pertaining to the
installation of this equipment.
Clearances
The ecosmart is approved for up-flow, down-flow, and horizontal configurations. Clearances do
not change with orientation. This hydronic furnace is for indoor installation only.
Clearance from
Combustibles (in)
Recommended
Service Clearance (in)
Top
0
0
Bottom
0
0
Front
0
24
Back
0
0
Sides
0
0
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Freeze Protection
It is not recommended to install the ecosmart in an unheated space.
Should the ecosmart be installed in an area where the ambient temperature may fall below
freezing, ethylene or propylene glycol should be added into the hydronic heating system to
protect against damage, which would not be covered under warranty. Make sure the glycol is
compatible with all system components and is permitted by local and national codes.
Rear Piping Connections
The heating coil may be reversed to allow rear piping:
Remove upper door
Disconnect supply air sensor from extension cable
Slide out heating coil
Re-mount supply air sensor and grommet to opposite end of heating coil
Remove rear knock-outs
Slide in heating coil
Use plastic plugs (provided) to close up holes on upper door
Ecosmart Mounting
The ecosmart can be installed in upflow, downflow and left or right horizontal applications.
Install the ecosmart with the door in place to make sure the cabinet remains square. Flip the
unit for downflow applications so that the top of the unit is now the bottom. No modification is
required for any configuration.
The ecosmart can be suspended from floor joists, rafters or concrete using rods, pipe, angle
supports or straps. Units must be hung level to ensure quiet operation.
CAUTION - Use any of the existing screw holes in the cabinet when using straps. If
the existing screw is too short for securing a mounting strap, a longer screw should
be used provided care is taken not to damage any internal components. Product
warranty does not cover any damage or claims resulting from damage from longer
screws or from the unit being improperly suspended.
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The cabinet is designed so that the return air can be located on either side of the cabinet, or
from the bottom of the cabinet. Position a filter rack so that the filter is readily accessible. A
filter and filter rack are not included. Sides are marked for a standard 16 x 20 in filter rack.
WARNING - Special care should be taken in the vicinity of the coil to avoid
puncture. Screw into opening flange instead of top of cabinet when fastening the
supply air duct.
Plumbing
Install a ½ in sediment faucet or ball valve for use as a drain/purge valve. The drain valve must
be located downstream of the pump and check valve, and upstream of the isolation valve (if
isolation valve is present). With this arrangement, any air trapped in the system can easily be
flushed out following the instructions in the Start-up & Troubleshooting sections. Isolation
valves are recommended, but not required. Installing isolation valves facilitates easy servicing.
When the space heating loop connections are made to the domestic water connections:
The heating loop connections should be positioned horizontally in a vertical section of
the domestic water line for both inlet and outlet. Refer to the piping schematic for
details.
Connect the heating loop to the domestic water connections as close to the water
heater as possible
Avoid sections of pipe in the heating loop that can trap air where possible. It is usually
impossible to install a system without having at least one part of the system or heating coil able
to trap air. This will not be a problem if the connection to the domestic water lines is made
properly, and purge valves and air eliminator devices are installed.
Following the flushing procedures in the start-up section will ensure that there is no air
in the system after initial set-up.
Follow recommendations supplied by the manufacturer of the heating source being used.
ecosmart includes a flow switch connection where a flow switch can be connected to allow for
domestic water priority. Note: the correct type of flow switch is a normally open (NO) device.
The flow switch closes when domestic water is flowing
Check Valve
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A check valve may be required for your system to meet local codes and to work effectively. A
check valve:
Protects against back-flow of water to avoid short circuiting around the water heater
during domestic use
Protects against thermal siphoning
Is required in all potable water systems
A drain pan is recommended underneath the appliance for all installations.
Pump
A pump is not included inside the ecosmart. Whether you are using an external pump or an
internal built-in pump, it should be sized for the system. Pumps supplied with the heat
generating units can be used as the sole pump provided it meets the needs of the system. This
is especially the case in retrofit applications where a much larger pump may have previously
been used in the system.
When set up in multi-stage mode, the pump will operate as a 3-speed pump if it is a
variable 0-10V type. If the pump is a standard 120VAC type, it will operate at a single
speed only.
When set up in single-stage mode, the pump will operate as a single-speed pump.
The ecosmart controller has a built-in pump timer that exercises the pump for 1 minute
every 24 hours to prevent the possibility of ‘sticking’ due to sediment etc.
Water Heater or Boiler Setup
Follow the manufacturer’s installation and start-up instructions of the water heater or boiler.
Make sure the equipment is turned off during installation and service. Make certain the
equipment has been refilled and all air is purged from the system before turning on the heater.
WARNING - When the system requires water temperatures higher than
125°F, a mixing valve shall be installed to reduce domestic hot water
temperature to safeguard against scalding.
Combo Systems
The ecosmart is ideal for use in combo systems which provide space heating and domestic hot
water from a single heat source. Any properly sized gas, propane or oil fired water heater or
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boiler will work in a combo system. Make sure any water heater being used is approved for
combo applications.
PIPING DIAGRAMS
Tankless Water Heater Piping
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Boiler Piping
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ELECTRICAL
WARNING - Make sure the installation meets all national and local
electrical codes.
Electrical Information
The ecosmart wiring diagram is located on the cover of the electrical box behind the lower front panel.
Ratings data is located on the lower front panel.
The ecosmart operates on 120VAC 60Hz single phase line voltage and should have its
own dedicated breaker or fuse rated as per the MOP on the ratings label
All control circuits are standard 24VAC
ecosmart must be grounded via the green wire within the control box
Thermostat Wiring
Any standard heat/cool thermostat is compatible with the ecosmart.
Wire thermostat to lower right tabs as marked. The ecosmart supports optional 2-stage cooling if
required.
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Ecosmart Wiring Diagram
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Miscellaneous wiring to the upper right tabs of control board as marked:
FLOW – connect a normally open (NO) flow switch. If there is a call for DHW, fan will
shut down and resume once the call for DHW has ended
BOILER – dry contacts to initiate heat source
AUX 24V – 24VAC output for humidifier or other accessory. Active when heating is on
0-10V – 0 to 10VDC output to drive a variable speed pump (if installed). Variable speed
pump will run at LO, MED or HI speeds in the multi-stage mode. Note if a standard AC
pump is used, the pump will run at a single speed
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DIP SWITCH OPTIONS
Switch Locations
Two DIP switches labelled CFM and OPTIONS are located on the top left section of the control board.
One switch is for Heat and Cool CFM rates, and the other for system options.
WARNING – to prevent damage, use a small screwdriver to change switch position.
Up is ON as marked on the switch body and each switch is identified with numbers below.
CFM – switches 1 and 2 set Heat CFM rate
CFM – switches 3 and 4 set Cool CFM rate
OPTIONS – sets various system parameters
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Heat CFM (ES50LVS)
MULTI-STAGE
CFM @ 0.5”WC
SINGLE-STAGE
CFM @ 0.5”WC
SWITCH 1
SWITCH 2
VAR. PUMP
STD.
PUMP
300/300/400 (1)
400
OFF
OFF
LO/MED/HI (1)
HI
300/400/600 (1)
600
ON
OFF
LO/MED/HI (1)
HI
400/600/700 (1)
700
OFF
ON
LO/MED/HI (1)
HI
600/700/800 (1)
800
ON
ON
LO/MED/HI (1)
HI
(1) Multi-stage sequences are every 5 minutes until last speed is reached.
Heat CFM (ES90LVS)
MULTI-STAGE
CFM @ 0.5”WC
SINGLE-STAGE
CFM @ 0.5”WC
SWITCH 1
SWITCH 2
VAR. PUMP
STD.
PUMP
400/400/600 (1)
600
OFF
OFF
LO/MED/HI (1)
HI
400/600/800 (1)
800
ON
OFF
LO/MED/HI (1)
HI
600/800/1000 (1)
1000
OFF
ON
LO/MED/HI (1)
HI
800/1000/1200 (1)
1200
ON
ON
LO/MED/HI (1)
HI
(1) Multi-stage sequences are every 5 minutes until last speed is reached.
Cool CFM (ES50LVS)
CFM @ 0.5” WC
SWITCH 3
SWITCH 4
400/400 (3)
OFF
OFF
400/600 (3)
ON
OFF
600/700 (3)
OFF
ON
700/800 (3)
ON
ON
Cool CFM (ES90LVS)
CFM @ 0.5”WC
SWITCH 3
SWITCH 4
600/600 (3)
OFF
OFF
600/800 (3)
ON
OFF
800/1000 (3)
OFF
ON
1000/1200 (3)
ON
ON
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Options (ES50LVS and ES90LVS)
Mode
SWITCH 1
SWITCH 2
SWITCH 3
SWITCH 4
Constant circulating fan - runs at Heat CFM rate
OFF X X X Constant low circulating fan (2)
ON X X
X
Multi-stage
X
OFF X X
Single-stage
X
ON X X
Normal Fan Cooling - runs at higher Cool CFM rate
X X OFF X Dehumidification Fan Cooling (3)
X X ON
X
Not used
X X X
X
Not used
X X X
X
(2) ES90LVS runs at 400 CFM, ES50LVS runs at 300 CFM.
(3) Fan Cooling runs at lower COOL CFM rate for 15 min. and then goes to higher rate.
SEQUENCE OF OPERATION
Multi-stage Operation
Thermostat calls for heat
R is connected to W
Heat generator is turned on
Auxiliary 24VAC power is turned on
Pump turns on 100%
After a 15 second delay to allow for system water to heat up coil, fan ramps up as
follows:
1. Stage 1 - Lower HEAT CFM fan speed for 5 minutes
If a variable speed pump is installed, it runs at LO. If a standard single speed AC
pump is installed it runs at HI.
2. Stage 2 - Medium HEAT CFM fan speed for 5 minutes
If a variable speed pump is installed, it runs at MED. If a standard single speed AC
pump is installed it runs at HI.
3. Stage 3 - High HEAT CFM fan speed until thermostat is satisfied
If a variable speed pump is installed, it runs at HI. If a standard single speed AC
pump is installed it runs at HI.
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Thermostat is satisfied
R is disconnected from W
Heat generator is turned off
Auxiliary 24VAC power is turned off
Pump turns off and fan speed ramps down to zero, extracting any remaining heat in the
coil
Single-stage Operation
R is connected to W
Heat generator is turned on
Auxiliary 24VAC power is turned on
Pump turns on at 100%
After a 15 second delay to allow for system water to heat up coil, fan ramps up to HEAT
CFM speed
If a variable speed pump is installed, it runs at HI. If a standard single speed AC pump is
installed it runs at HI
Thermostat is satisfied
R is disconnected from W
Heat generator is turned off
Auxiliary 24VAC power is turned off
Pump turns off and fan speed ramps down to zero, extracting any remaining heat in the
coil
Cooling Mode (Multi and Single stage)
(Assumes a condenser and DX coil is installed within the system)
R is connected to Y and Y2*
Condenser turns on
Fan ramps up to COOL CFM setting
* If thermostat and condenser support 2-stage cooling
Thermostat is satisfied
Condenser turns off
Fan speed ramps down to zero, extracting any remaining cooling from the DX coil
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Dehumidification
When in cooling mode, a dehumidification function can be set using system switch 3 as follows:
OFF - Normal cooling fan runs at rate set by COOL CFM switch
ON - Fan Cooling runs at lower COOL CFM rate for 15 min. and then goes to higher rate
Fan Mode
R is connected to G
If fan is set to “ON” on thermostat, fan runs as follows:
If OPTION switch 1 is OFF, fan runs at selected HEAT CFM rate
If OPTION switch 1 is ON, fan runs at 300 CFM (ES50LVS), 400CFM (ES90LVS)
If fan is set to “OFF” on thermostat, fan runs at HEAT or COOL CFM settings
Constant Low Fan Circulation
Fan may be run at a low rate using OPTION switch 1 as follows:
OFF – fan runs at rate set by HEAT CFM switch
ES50LVS runs at 300 CFM, ES90LVS runs at 400 CFM
Condenser Lockout
If the air out falls below 40°F, the condenser will turn off until the temperature warms. This is
to prevent DX coil ice-up. This accomplished by breaking the connection at the C terminal from
the 24VAC return.
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Pump Exerciser
The circulating pump is exercised for 1 min every 24 hr when the ecosmart is OFF,
COOLING (Y), COOLING2 (Y2) or FAN (G) to prevent the possibility of ‘sticking’ due to
sediment and to meet local codes
During the 1 min pump on-time, the fan is turned off and resumes once the pump
exercising is completed
Pump runs continuously if the outlet air temperature drops below 40°F to prevent the
chance of freezing
SERVICE AND MAINTENANCE
NOTE: The ecosmart is not to be used for temporary heat during construction. Use for this
purpose will void equipment warranty.
Filter
Inspect the filter monthly and replace, remove and vacuum or rinse as required. A clogged or
inadequate filter may void product warranty. Replacement filter size is 16 x 20 x 1.
Coils
Air conditioning and heating coils should not require cleaning if the filter maintenance schedule
is adhered to. If a filter is damaged or collapses from plugging, dust may foul the coils. If this
happens, replace the filter and carefully vacuum the coils. The fan may need to be removed to
gain access to the face of the heating coil.
Fan and Motor
Check fan for dust once a year. If dirty, vacuum or wash to remove dust. Keeping the fan blades
clean will reduce noise and improve capacity and efficiency of the heating system.
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TROUBLESHOOTING
Removing blower/control assembly
Blower and control assembly can be removed as a single piece:
Turn off power to ecosmart
Disconnect AIR OUT temperature sensor (white plug/socket) just above front centre
plate
Disconnect power, thermostat and other wiring from within control box
Undo (Qty. 2) #1/4-20 bolts, lockwashers and flat washers
Slide out blower assembly
Thermostat call error
If the ecosmart does not run when the thermostat is calling, jumper R to W for heating or R to Y
(Y2) to verify if the problem is with the thermostat or ecosmart control. Note that some
thermostats have a delay (typically five minutes) before they will re-start cooling to prevent
compressor damage.
External pump does not run
In areas where hard water is present the pump may stick and fail to run. Often, closing the
isolation valve on the return leg and opening the drain port so that water flows through the
pump can free this. If this fails to free the pump, removal for cleaning or replacement is
necessary. The daily pump exerciser will help prevent pump sticking.
External pump is noisy at start-up
If sound has not diminished within 1 minute, air may be present in the system and may need repurging. If the heat source is a water heater, check to make sure branch connections for the
heating loop are horizontal to prevent the collecting of air in the loop.
Water heater temperature and pressure relief valve is weeping
A check valve or back-flow preventer may have been installed in the system. Some form of
pressure relief may be required. Consult water heater manufacturer’s instructions. Options are:
Install expansion tank
Install pressure relief valve; locate outlet over laundry tub or floor drain
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Insufficient or no heat
Check that the heat generator is functioning properly
Plugged air filter or coil. Refer to maintenance section for filter care and coil cleaning
Air in heating loop - purge system
Inlet and outlet connections to ecosmart are backwards - reverse connections
Water heater dip tube is restricted or damaged; check and/or replace
Supply water temperature set too low or not calibrated properly - check water
temperature
Restrictions on heating loop - remove restrictions, check if valve is stuck, isolation valves
could be too restrictive or left partially closed after purging, or a closed valve
Cold water at hot faucet
When the heat source is a water heater, the most probable cause is reverse flow through the
heating loop from a stuck check valve - repair or replace valve.
Fan runs for cooling but not for heating
The room thermostat may be connected improperly. Refer to Electrical section or wiring
schematic on ecosmart for proper installation.
Heating during standby mode
Probable cause is thermal siphoning.
WARRANTY
Warranty is 2 years parts. Visit ecosmartair.com/warranty.htm for full details.
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