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P/N 14000A-PRERAD
ES50LVP / ES90LVP
PREMIUM MODULATING
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
Modulating Mode ................................................................................................................................. 4
Step Modulating Mode ......................................................................................................................... 5
Basic Mode ............................................................................................................................................ 5
SPECIFICATIONS ............................................................................................................ 8
QUICK START-UP PROCEDURES .................................................................................... 10
INSTALLATION ............................................................................................................ 11
Clearances ........................................................................................................................................... 11
Freeze Protection ................................................................................................................................ 11
Rear Piping Connections ..................................................................................................................... 11
Ecosmart Mounting ............................................................................................................................. 12
Plumbing ............................................................................................................................................. 12
Pump ................................................................................................................................................... 13
PIPING DIAGRAMS ...................................................................................................... 15
Typical Tankless Water Heater Piping ................................................................................................. 15
Typical Boiler Piping ............................................................................................................................ 16
ELECTRICAL................................................................................................................. 17
Electrical Information .......................................................................................................................... 17
Thermostat Wiring .............................................................................................................................. 17
Ecosmart ES50LVP/ES90LVP Wiring Diagram ..................................................................................... 18
Miscellaneous Wiring .......................................................................................................................... 19
DIP SWITCH OPTIONS .................................................................................................. 20
Switch Locations ................................................................................................................................. 20
Outdoor Temperature Select .............................................................................................................. 20
Heat CFM (ES90LVP) ........................................................................................................................... 21
Heat CFM (ES50LVP) ........................................................................................................................... 21
System (ES990LVP and ES50LVP) ........................................................................................................ 21
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Cool CFM (ES90LVP) ............................................................................................................................ 22
Cool CFM (ES50LVP) ............................................................................................................................ 22
SEQUENCE OF OPERATION ........................................................................................... 23
Full Modulation ................................................................................................................................... 23
Step Modulation ................................................................................................................................. 23
Basic Modulation Mode ...................................................................................................................... 24
Cooling Mode (Modulation, Step and Basic) ...................................................................................... 24
Dehumidification ................................................................................................................................. 25
............................................................................................................................................................ 25
Fan Mode ............................................................................................................................................ 25
Constant Low Fan Circulation ............................................................................................................. 25
Pump Exerciser .................................................................................................................................... 25
SERVICE AND MAINTENANCE ....................................................................................... 26
Filter .................................................................................................................................................... 26
Coils ..................................................................................................................................................... 26
Fan and Motor .................................................................................................................................... 26
Control and Blower Assembly Removal .............................................................................................. 26
TROUBLESHOOTING .................................................................................................... 27
Thermostat call error .......................................................................................................................... 27
External pump does not run ............................................................................................................... 27
External pump is noisy at start-up ...................................................................................................... 27
Water heater temperature and pressure relief valve is weeping ...................................................... 27
Insufficient or no heat ......................................................................................................................... 27
Cold water at hot faucet ..................................................................................................................... 28
Fan runs for cooling but not for heating ............................................................................................. 28
Heating during standby mode ............................................................................................................ 28
WARRANTY ................................................................................................................ 28
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 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. Various parameters are automatically monitored and
fan and pump speeds vary simultaneously. The ecosmart has a built-in variable speed pump
controller that can vary the speed of a standard single speed AC pump.
MODES OF OPERATION
Three modes of operation are available:
1. Full modulation – full control of fan and pump (requires outdoor temperature sensor).
2. Step modulation – timed fan and pump sequencing.
3. Single stage – standard furnace emulation.
Modulating Mode
(ecosmart outdoor sensor installed)
Water temperature is set at the heat generator by referring to the heat generator performance
data. It is best to maintain constant water temperature at the heat generator.
If the heat generator comes with an optional outdoor temperature sensor do not
install it as it will conflict with the ecosmart control.
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The fan operates at the speed selected on the HEAT CFM switch during the setup. Fan and
pump speed automatically reduce as outdoor temperature rises. Fan CFM may reduce by up to
30% from the HEAT CFM switch setting depending on outdoor temperature.
If the heat generator includes a built-in pump, and it is directly connected to the ecosmart, the
ecosmart will vary the pump automatically. If the system is configured for primary/secondary
pumping and the heat generator includes a pump, the secondary pump can be controlled by
the ecosmart.
Step Modulating Mode
(ecosmart outdoor sensor not installed)
Water temperature is set at the heat generator by referring to the heat generator performance data.
Fan operates at 50% of the HEAT CFM setting for 5 minutes then increases to 75% for a further 5
minutes, then increases to 100% until the thermostat is satisfied. If the pump is controlled by the
ecosmart, its speed will be adjusted accordingly as the ecosmart goes through its stages. If the pump is
controlled by the heat source, it will function according to the heat source control strategy.
Basic Mode
(ecosmart outdoor sensor not installed)
Water temperature is set at the heat generator by referring to the heat generator performance
data. Fan operates at 100% of selected HEAT CFM and pump operates at maximum speed until
the thermostat is satisfied.
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PERFORMANCE RATINGS
ES50LVP
Performance Data - Hot Water Capacities (BTUH) @ 70°F Entering Air Temperature
WATER PD
(FT-WG)
@140°F
ecosmart
Air Pressure Drop: 0.04 IWC
ES50LVP
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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ES90LVP
Performance Data - Hot Water Capacities (BTUH) @ 70°F Entering Air Temperature
WATER PD
(FT-WG)
@140°F
ecosmart
Air Pressure Drop: 0.16” WC
ES90LVP
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
ES50LVP
ES90LVP
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
ES50LVP ECM blower performance (amps)
CFM
0.1” WC
0.2” WC
0.3”WC
0.4”WC
0.5”WC
300
0.30
0.46
0.69
0.82
1.04
400
0.54
0.65
0.82
0.85
1.13
500
0.66
0.77
0.95
1.20
1.41
600
0.90
0.92
1.29
1.49
1.67
700
1.01
1.35
1.44
1.77
2.02
800
1.55
1.59
1.76
2.11
2.45
900
1.86
1.88
2.12
2.40
2.80
ES90LVP ECM blower performance (amps)
CFM
0.1” WC
0.2” WC
0.3”WC
0.4”WC
0.5”WC
600
0.94
0.99
1.26
1.58
1.95
700
1.22
1.31
1.65
2.05
2.34
800
1.53
1.58
2.12
2.2
2.88
900
1.62
2.34
2.44
2.76
3.07
1000
2.43
2.91
3.28
3.90
4.26
1100
2.85
3.28
3.83
4.04
4.44
1200
3.57
3.82
4.44
4.83
4.46
1300
4.70
5.05
5.32
6.22
6.43
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QUICK START-UP PROCEDURES
Refer to the superseding 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 120 F / 49 C.
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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
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
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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.
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 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 ease of 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
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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
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
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.
The ecosmart includes a built-in variable speed pump controller that can control a standard
single speed pump up to 250 watts. Operational modes are as follows:
When set up in modulating mode, the pump will operate as a continuously variable
speed pump
When set up in step-modulating mode, the pump will operate as a multi-speed pump.
When set up in basic mode, the pump will operate as a single-speed pump
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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 120F,
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
boiler will work in a combo system. Make sure any water heater being used is approved for
combo applications.
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PIPING DIAGRAMS
Typical Tankless Water Heater Piping
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Typical 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
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 ES50LVP/ES90LVP Wiring Diagram
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Miscellaneous Wiring
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
OUTDOOR – included outdoor temperature sensor connects here. If sensor is not
connected, ecosmart assumes coldest temperature is present
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DIP SWITCH OPTIONS
Switch Locations
Four DIP switches are located on the top, mid section of the control board.
WARNING – to prevent damage, use a small screwdriver to change switch position.
Up is ON as marked on the switch body and are identified with numbers below.
OUTDOOR TEMP – set the lowest outdoor temperature expected
HEAT CFM – set 1 of 8 fan CFM rates for heating
SYSTEM – set various system parameters
COOL CFM – set 1 of 8 fan CFM rates for cooling
Outdoor Temperature Select
Select lowest possible expected outdoor temperature.
DESIGN TEMP °C
DESIGN TEMP °F
SWITCH 1
SWITCH 2
SWITCH 3
< -18
< 0
OFF
OFF
OFF
-17 to -10
1 – 14
ON
OFF
OFF
-9 to 0
15 – 32
OFF
ON
OFF
1 to 10
33 – 50
ON
ON
OFF
>10
>50
OFF
OFF
ON
NOT USED
X X X
NOT USED
X X X
NOT USED
X X X
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Heat CFM (ES90LVP)
Select required heating CFM.
CFM @ 0.5” WC
SWITCH 1
SWITCH 2
SWITCH 3
600
OFF
OFF
OFF
700
ON
OFF
OFF
800
OFF
ON
OFF
900
ON
ON
OFF
1000
OFF
OFF
ON
1100
ON
OFF
ON
1200
OFF
ON
ON
1300
ON
ON
ON
Heat CFM (ES50LVP)
Select required heating CFM.
CFM @ 0.5” WC
SWITCH 1
SWITCH 2
SWITCH 3
300
OFF
OFF
OFF
400
ON
OFF
OFF
500
OFF
ON
OFF
600
ON
ON
OFF
700
OFF
OFF
ON
800
ON
OFF
ON
900
OFF
ON
ON
System (ES990LVP and ES50LVP)
Select required system parameters.
Mode
SWITCH 1
SWITCH 2
SWITCH 3
SWITCH 4
Full Modulation
OFF
OFF X X
Step Modulation
ON
OFF X X
Single Stage
OFF
ON X X
Test Mode (1)
ON
ON X X
Normal Fan Cooling (2)
X X OFF X Dehumidification Fan Cooling (2)
X X ON
X
Normal Continuous Fan (3)
X X X
OFF
Low Speed Continuous Fan (3)
X X X
ON
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(1) Test Mode - heat source is brought on, fan runs at HEAT CFM setting and pump runs at full
speed irrespective of thermostat setting. Useful for eliminating air in the system during
installation.
(2) Normal Fan Cooling runs at rate set by COOL CFM switch.
Dehumidification Fan Cooling runs at 75% of COOL CFM rate for 15 min. and then reverts back
to rate set by COOL CFM.
(3) Normal Continuous Fan runs at rate set by HEAT CFM switch.
Low speed Continuous Fan runs at 50% of rate set by HEAT CFM switch.
Cool CFM (ES90LVP)
CFM @ 0.5”WC
SWITCH 1
SWITCH 2
SWITCH 3
600
OFF
OFF
OFF
700
ON
OFF
OFF
800
OFF
ON
OFF
900
ON
ON
OFF
1000
OFF
OFF
ON
1100
ON
OFF
ON
1200
OFF
ON
ON
1300
ON
ON
ON
Cool CFM (ES50LVP)
CFM @ 0.5” WC
SWITCH 1
SWITCH 2
SWITCH 3
300
OFF
OFF
OFF
400
ON
OFF
OFF
500
OFF
ON
OFF
600
ON
ON
OFF
700
OFF
OFF
ON
800
ON
OFF
ON
900
OFF
ON
ON
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SEQUENCE OF OPERATION
Full Modulation
Heating Mode – (ecosmart outdoor sensor installed)
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 to HEAT
CFM speed
ecosmart control automatically adjusts fan and pump speeds to meet the outdoor
temperature conditions
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
Step Modulation
Heating Mode – (ecosmart outdoor sensor not installed)
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 to HEAT
CFM speed
ecosmart goes through three steps:
50% of HEAT CFM setting for 5 minutes – pump LO
75% of HEAT CFM for 5 minutes – pump MID
100% of HEAT CFM until thermostat is satisfied – pump 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
Basic Modulation Mode
Heating Mode – (ecosmart outdoor sensor not installed)
Thermostat calls for heat
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
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 (Modulation, Step and Basic)
(ecosmart outdoor sensor not installed)
(Assumes a condenser and DX coil is installed within the system)
R is connected to Y or Y2*
Condenser turns on
Fan ramps up to COOL CFM setting
* If thermostat and condenser support 2-stage cooling
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Thermostat is satisfied
Condenser turns off
Fan speed ramps down to zero, extracting any remaining cooling from the DX coil
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 runs at 75% of COOL CFM rate for 15 min. and then reverts back to rate set by
COOL CFM
Fan Mode
R is connected to G
If fan is set to “ON” on thermostat, fan runs as follows:
If SYSTEM switch 4 is OFF, fan runs at selected HEAT CFM rate
If SYSTEM switch 4 is ON, fan runs at 50% of selected HEAT CFM rate
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 system switch 4 as follows:
OFF – fan runs at rate set by HEAT CFM switch
ON – fan runs at 50% of rate set by HEAT CFM switch
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 40F to prevent the
chance of freezing
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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.
Control and Blower Assembly Removal
1. Turn off main power.
2. Disconnect power, thermostat and any other miscellaneous wiring from the control
board and remove them from the control casing.
3. On the bottom side of the upper cover, disconnect the supply air temperature sensor by
sliding out the rubber grommet.
4. Gently pull out the black wire until a white connector is revealed.
5. Unplug the white connector noting that there is a polarizing/locking feature when re-
assembling.
6. Remove (Qty. 2) ¼-20 bolts, lockwashers and flat washers holding the control and
blower assembly to the centre plate.
7. Slide out assembly.
8. Re-assemble in the reverse order.
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TROUBLESHOOTING
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.
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. An
expansion tank may be required.
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.
Supply water temperature set too low or heat generator is not supplying water at the
specified setting.
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.
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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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