HP Fan-Coil Units High-Performance, Horizontal - Enviro-Tec

HP Fan-Coil Units High-Performance, Horizontal - Enviro-Tec
catalog
HP Fan-Coil Units
High-Performance, Horizontal
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
TABLE OF CONTENTS
Features and Benefits............................................................................................................................................ 3
Unit Arrangements................................................................................................................................................. 4
Construction Features............................................................................................................................................ 6
Standard and Optional Features............................................................................................................................ 8
Coils, Physical Data............................................................................................................................................... 9
Physical Data....................................................................................................................................................... 10
Electric Heat......................................................................................................................................................... 11
Fan Performance Curves, PSC............................................................................................................................ 12
ECM™ Fan Motor Option..................................................................................................................................... 16
Performance Fan Curves, ECM™ Motors........................................................................................................... 17
Motor and Fan Data............................................................................................................................................. 19
Dimensional Data................................................................................................................................................. 20
Guide Specifications............................................................................................................................................. 27
NOTES:
• ENVIRO-TEC offers Web-Select®, the industry’s first web-based rating and selection program for complete
unit, coil and sound selection.
See your representative or visit our website at www.enviro-tec.com for more information.
• Some drawings are not shown in this catalog.
• All data herein is subject to change without notice.
• Drawings not for installation purposes.
• ETL Report Number 3036742-001.
2ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
FEATURES AND BENEFITS
HIGH PERFORMANCE
The ENVIRO-TEC HP Series horizontal high performance fan coil units are designed to maximize
flexibility of selection and installation.
The units are also designed to exceed the stringent
quality standards of the institutional market, while
remaining cost competitive in the light commercial
segment of the market.
ENVIRO-TEC horizontal fan coil units set the new
standards for quality, flexibility, and competitive pricing.
DESIGN FLEXIBILITY
The extensive variety of standard options available on
the HP Series units are where you find the versatility
to fit any HVAC system designer’s needs.
Options include: mixing box with linkage, rear or bottom
ducted return, foil faced or elastomeric closed cell foam
insulation, solid or telescoping bottom panels for unit
recessing, single wall stainless steel drain pans, and
electric heat with single power connection. All electric
heat units are listed with ETL as an assembly and carry
the cETL label.
All units comply with the latest edition of AHRI Standard
440 for testing and rating fan coil units, are certified, and
display the AHRI symbol. Sizes 14 through 20 exceed
the maximum airflow rate in AHRI 440 and are outside
of the scope of certification.
High efficiency motors, fan relays, disconnects and
fusing mean easier coordination between mechanical
and electrical trades.
Coil options allow for three, four or six row chilled water
or DX coils. One to four row hot water or one and two
row standard steam coils may be placed in the preheat
or reheat position.
CONVENIENT INSTALLATION
All units are thoroughly inspected and tested prior to
shipment, eliminating potential problems at startup. Motor wiring is brought to a junction box on the outside
of the unit casing, reducing electrical hook-up time.
Plenum units are field reversible for either rear or
bottom return without the need for special adapters
and tools.
All coils and drain pans are field reversible for right or
left side connections.
All HP Series fan coil units have a side access electrical enclosure, allowing easy access to all electrical
components, terminal blocks and wiring.
Available factory installed control packages can greatly
reduce field labor and setup time. Consisting of control
transformer and all needed relays, these packages
integrate seamlessly with either factory provided thermostats or field installed thermostats and controllers.
Factory furnished valve packages assure proper fit,
operation and performance. Valve packages are completely assembled and shipped loose with the units.
QUALITY PRODUCT
HP Series fan coil units are built from galvanized steel.
Exposed Model HPE cabinetry is powder coated galvannealed steel.
Standard insulation is 1/2 inch thick fiberglass, complying with UL 181 and NFPA 90A. Optional foil faced
or elastomeric closed cell foam insulation may be
specified.
All units, with or without electric heat, are cETL listed
and labeled. All wiring is in compliance with NEC,
assuring safety and quality for the owner.
HP Series fan coil units have a removable fan assembly. The entire fan assembly can be removed from the
unit and serviced easily on a workbench.
All HP Series fan coil units are shipped completely
assembled, reducing field installation time and labor.
ENVIRO-TEC
3
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
UNIT ARRANGEMENTS
HPP BOTTOM RETURN
HPP REAR RETURN WITH SOLID
ACCESS PANEL
HPP REAR RETURN
HPP BOTTOM RETURN W/BOTTOM
CEILING PANEL
HPP BOTTOM RETURN WITH
TELESCOPING BOTTOM PANEL
HPF FREE RETURN
HPM MIXING BOX WITH
TOP & REAR RETURN
HPM MIXING BOX
W/BOTTOM & REAR RETURN
4ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
UNIT ARRANGEMENTS
HPE DOUBLE DEFLECTION SUPPLY
GRILLE AND DUCTED REAR RETURN
HPEDUCTEDSUPPLYANDSINGLEDEFLECTIONREAR
RETURN GRILLE
HPE DOUBLE DEFLECTION SUPPLY
GRILLE AND SINGLE DEFLECTION
BOTTOM RETURN GRILLE
HPE DUCTED SUPPLY AND
DUCTED REAR RETURN
HPE DOUBLE DEFLECTION
HPEDUCTEDSUPPLYANDSINGLEDEFLECTIONBOTTOM
SUPPLYGRILLEANDSINGLEDEFLECTIONREARRETURN
RETURN GRILLE
GRILLE
ENVIRO-TEC
5
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
CONSTRUCTION FEATURES
MODEL HPP
HP Series fan coils have many standard and optional features which are unique to the industry (see page 8 for a
complete listing).
1/2” thick fiberglass insulation
(standard) or foil faced
or elastomeric closed cell foam
insulation (optional)
Galvanized steel casing
1” minimum duct collar allows quick field
connection of duct work
Integral filter rack with
1” filter and integral
rear ducted (shown) or
bottom return on all
plenum units.
Optional 2” filter
available.
ETL and AHRI 440
listed and labeled
Coils are AHRI 410
listed and labeled
Permanently lubricated, three tap, PSC fan
motors designed for
quiet and efficient
operation
Single point power
connection on all units
with electric heat
Removable fan assembly for bottom or rear
access and servicing
Chilled water or DX
cooling coils up to 6 rows
Optional electric
resistance heat is ETL
listed as an assembly
for safety compliance
Enclosure allows easy
side access to all
electrical components
MODEL HPE
Horizontal Exposed Cabinet
Single wall galvanized or stainless steel (optional) drain pans
are double sloped to drain
connections
Drain pans can be
easily removed for cleaning,
and reversed for opposite side
drain connections
Hot water heating coils up
to 4 rows, or steam coils
up to 2 rows can be mounted in the preheat or reheat
position. Maximum of 8
rows total.
Optional auxiliary drain
connection for added
security (not shown)
MODEL HPF
Horizontal Free Return
6ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
CONSTRUCTION FEATURES
MODELS HPF/HPP/HPE
DRAIN PAN
ELECTRICAL ENCLOSURE
The side access electrical enclosure provides access
to all electric heat and control components. Terminal
strips are furnished for simple power and control wiring
connections. Multiple knockouts allow wiring entries from
either side of the compartment.
Standard drain pans are externally insulated, single wall
galvanized steel with an option for stainless steel. Drain
pans are available with secondary drain connection. On
concealed models, the HP Series drain pan is easily
removable for cleaning or reversing connections.
MIXING BOX
The optional fully insulated mixing box section comes
completely assembled to the HPP unit, featuring low
leakage, heavy gauge steel dampers with integral linkage. Damper positioning is field configurable and bottom
filter access is standard. An optional factory provided
and installed damper actuator is also available.
COILS
All fan coils are available in 2 or 4 pipe configurations.
The heating coil may be placed in the reheat or preheat
position. Heating and cooling coils are field reversible
for right or left side connections.
ENVIRO-TEC
FILTERS
One inch throwaway filters are tight fitting to prevent air bypass. Filters are easily removable from the
bottom without the need for tools. The filter rack is convertible from rear to bottom return without the need for
additional parts. Optional 1” and 2” pleated filters are
available for use with the HPP unit.
POWDER COATED
PAINTED SURFACE
Exposed cabinet Model
HPE features powder coat
finish that resists scuffing,
scratching, fading, and fingerprints.
7
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
FEATURES AND OPTIONS
STANDARD FEATURES
Construction
All Units
• AHRI 440 certified and labeled
• Galvanized steel construction
• 1/2” thick fiberglass insulation
• 1 1/2” duct discharge collar
• Holes are provided at four points for hanging units
Plenum units
• Integral filter rack with 1” throwaway filter
• Integral rear ducted return - field reversible to bottom
return
Exposed units
• Single deflection rear return grille
• Double deflection discharge grille
• Durable powder coat paint
• 18 gauge cabinet construction
Coils
• AHRI 410 certified and labeled
• Cooling - 3, 4 or 6 row chilled water or DX, heat pump
compatible
• Heating - 1, 2, 3 or 4 row hot water or 1 or 2 row steam
- reheat or preheat position
• 8 total rows of cooling and heating coils maximum
• 3/8” O.D. seamless copper tubes
• 0.012” tube wall thickness
• High efficiency aluminum fin surface for optimizing heat
transfer, pressure drop and carryover
• Left or right hand connections – field reversible (water
coils only)
• Removable for service
• Manual air vent
Drain Pans
• Single wall, galvanized steel, externally insulated – fire
retardant and antimicrobial closed cell foam
• Double sloped to drain connection
• Removable, field reversible
• 7/8” O.D. primary drain connection
Fan Assemblies
• Forward curved, DWDI centrifugal type
• 115 volt, single phase, three tap PSC motors
• Quick disconnect motor connections
• Removable fan(s)/motor(s) for service
Electrical
• cETL listed for safety compliance
• Electrical junction box for field wiring terminations
• Terminal block for field connections
Electric Heat
• cETL listed as an assembly for safety compliance
• Integral electric heat assembly with removable elements for easy service
• Automatic reset primary and back-up secondary thermal limits
• Single point power connection
• Side-hinged electrical enclosure
OPTIONAL FEATURES
Construction
All units
• Foil faced fibe­rglass insulation
• Elastomeric closed cell foam insulation
Plenum units
• Bottom return
• Mixing box with top/rear or rear/bottom dampers - field
reversible
• Damper actuator
• Spare 1” throwaway filters
• 1” and 2” pleated filters
Exposed units
• Single deflection bottom return grille
• Ducted supply
• Ducted rear return
Coils
• 1/2” O.D. seamless copper tubes
• 0.016” tube wall thickness
• 0.025” tube wall thickness
• Automatic air vents
• Stainless steel coil casings
Drain Pans
• Stainless steel with external insulation
• 5/8” O.D. secondary drain connection
• Auxiliary drip pans
Fan Assemblies
• 208-230 & 277 volt, single phase, three tap PSC
motors
• ECM™ motors
Electrical
• Side access electrical enclosure
• Silent solid state fan relays
• SCR fan speed controller (only for high speed)
• Toggle disconnect switch
• Condensate overflow switch (drain pan)
• Main fusing
• Unit and remote mounted three speed fan switches
• Fan relay packages
• Control power transformers
Electric Heat
• Door interlocking disconnect switches
• Main fusing
• Silent relay / contactor
Piping Packages
• Factory assembled – shipped loose for field installation
• 1/2”, 3/4”, and 1”, 2 way and 3 way normally closed,
two position electric motorized valves
• Isolation ball valves with memory stop
• Fixed and adjustable flow control devices
• Unions and P/T ports
• Modulating control valves
• High pressure close-off actuators (1/2” = 50 PSIG; 3/4”
= 25 PSIG; 1” = 20 PSIG)
Thermostats
• Remote mounted analog, digital display or
programmable
• 2 and 4 pipe control sequences
• Automatic and manual changeover
• Integral three speed fan switches
8ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
COILS, PHYSICAL DATA
COILS
ENVIRO-TEC offers hot water, chilled water, direct expansion (DX), and standard steam coils for specific application with all HP Series Fan Coil Units. Strict on-site inspection before, during, and after installation
guarantees the highest quality and performance available.
STANDARD FEATURES
• Cooling - 3, 4 or 6 row chilled water or DX
• Heating - 1, 2, 3 or 4 row hot water, or 1 or 2 row steam
• 8 total rows of cooling and heating coils maximum
• 3/8” O.D. seamless copper tubes
• 0.012” tube wall thickness
• High efficiency aluminum fin surface for optimizing heattransfer, pressure drop and carryover
• Left or right hand connections
• Manual air vents
OPTIONAL FEATURES
• 1/2” O.D. seamless copper tubes
• 0.016” tube wall thickness
• 0.025” tube wall thickness
• Automatic air vents
• Stainless steel coil casings
• DX coils are heat pump compatible
ENVIRO-TEC offers the industry’s first web-based fan coil rating and selection
program for complete unit, coil and sound selection. See your representative
for more information.
NOMINAL COIL CONNECTION SIZES
UNIT SIZE
1 ROW
5/8 [16]
5/8 [16]
5/8 [16]
5/8 [16]
5/8 [16]
5/8 [16]
5/8 [16]
5/8 [16]
06
08
10
12
14
16
18
20
2 ROW
5/8 [16]
5/8 [16]
5/8 [16]
7/8 [22]
7/8 [22]
7/8 [22]
7/8 [22]
7/8 [22]
WATER
3 ROW
7/8 [22]
7/8 [22]
7/8 [22]
7/8 [22]
7/8 [22]
7/8 [22]
1 1/8 [29]
1 1/8 [29]
COIL TYPE
4 ROW
7/8 [22]
7/8 [22]
7/8 [22]
7/8 [22]
1 1/8 [29]
1 1/8 [29]
1 1/8 [29]
1 1/8 [29]
6 ROW
7/8 [22]
7/8 [22]
7/8 [22]
1 1/8 [29]
1 1/8 [29]
1 1/8 [29]
1 1/8 [29]
1 1/8 [35]
STEAM
1 ROW
2 ROW
5/8 [16]
7/8 [22]
5/8 [16]
7/8 [22]
5/8 [16]
7/8 [22]
7/8 [22]
7/8 [22]
7/8 [22]
1 1/8 [29]
7/8 [22]
1 1/8 [29]
7/8 [22]
1 1/8 [29]
7/8 [22]
1 1/8 [29]
NOTES:
1.All dimensional data is outside diameter (O.D.), measured in inches [millimeters].
2.See submittal drawings for connection locations.
3.Connection sizes are for standard circuit coils. Consult factory for special applications.
4.Direct Expansion (DX) suction header connection sizes are either 5/8” [16mm] or 7/8” [22mm]. Refer to coil selection.
5.DX coils include a fixed orifice distributor for multi-circuited coils. A DX coil with a single circuit requires no distributor. Thermal
expansion valves (TXV’s) are field supplied by others.
FACE AREA, FREE AREA AND FILTER SIZES
UNIT
SIZE
06
08
10
12
COIL FACE
AREA
1.46 [0.14]
1.94 [0.18]
2.33 [0.22]
2.82 [0.26]
14
3.31 [0.31]
16
3.79 [0.35]
18
4.28 [0.40]
20
4.67 [0.43]
NOMINAL FILTER SIZES
(1) 16 x 16 [406 x 406]
(1) 16 x 20 [406 x 508]
(1) 16 x 25 [406 x 381]
(2) 16 x 16 [406 x 406]
(1) 16 x 16 & (1) 16 x 20
(1) [406 x 406] & (1) [406 x 508]
(2) 16 x 20 [406 x 508]
(1) 16 x 20 & (1) 16 x 25
(1) [406 x 508] & (1) [406 x 635]
(2) 16 x 25 [406 x 635]
1" THROWAWAY
FACE AREA
1.62 [0.15]
2.04 [0.19]
2.57 [0.24]
3.23 [0.30]
1" PLEATED
GROSS MEDIA AREA
4.0 [0.37]
4.8 [0.45]
6.0 [0.56]
8.0 [0.74]
2" PLEATED
GROSS MEDIA AREA
5.4 [0.50]
6.8 [0.63]
8.5 [0.79]
10.4 [0.97]
3.65 [0.34]
8.8 [0.82]
12.2 [1.13]
4.08 [0.38]
9.6 [0.89]
13.4 [1.24]
4.61 [0.43]
10.8 [1.00]
14.3 [1.33]
5.14 [0.48]
12.0 [1.11]
17.0 [1.58]
NOTES:
1.Face and free areas are in square feet [square meters].
2.Filter sizes are in inches [millimeters].
ENVIRO-TEC
9
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
PHYSICAL DATA
AHRI STANDARD RATINGS
Model /
Size
AHRI 440
Certified
HPF 06
HPF 08
HPF 10
HPF 12
HPF 14
HPF 16
HPF 18
HPF 20
HPP 06
HPP 08
HPP 10
HPP 12
HPP 14
HPP 16
HPP 18
HPP 20
HPE 06
HPE 08
HPE 10
HPE 12
HPE 14
HPE 16
HPE 18
HPE 20
*
*
*
*
Coil
*
*
*
*
*
*
*
*
Rows
FPI
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
Cooling Capacity
Airflow
CFM (Dry
flow)
693
900
1,068
1,409
1,930
2,131
2,228
2,362
669
950
1,001
1,438
1,826
1,852
1,916
1,999
594
741
846
1,193
1,491
1,666
1,762
1,855
QT (BTUH)
QS (BTUH)
21,770
31,080
32,560
45,450
60,430
64,250
71,430
70,080
21,110
26,260
31,230
45,820
52,830
58,910
64,700
70,020
19,410
27,490
27,460
38,930
51,630
54,840
61,820
66,550
16,440
22,570
24,060
33,870
45,300
48,830
53,050
54,170
15,940
20,200
22,920
34,290
40,930
44,020
47,300
50,520
14,500
19,520
19,940
28,050
37,480
40,570
44,640
47,670
Water
Power Input
Flow Rate
WPD (ft-wg) (Watts)
(GPM)
4.4
6.5
247
6.2
12.0
375
6.5
7.9
457
9.1
7.4
494
12
13.0
750
12.8
8.1
914
14.3
10.8
914
14.1
3.8
914
4.2
6.1
247
5.2
5.1
375
6.3
7.5
457
9.1
7.4
494
10.5
5.4
750
11.7
7.1
914
12.8
8.9
914
13.9
11.0
914
3.8
5.4
247
5.5
10.2
375
5.4
6.0
457
7.7
11.6
494
10.2
9.6
750
10.9
6.3
914
12.4
8.5
914
13.2
9.9
914
NOTES:
1.Based on 80°F DB and 67°F WB EAT, 45°F EWT, 10°F temperature rise, high fan speed. Motor type is
PSC and motor voltage is 115/1/60. Airflow under dry coil conditions. All models tested at 0.05” external
static pressure.
2.Airflow rate CFM on sizes 14 through 20 exceed maximum ratings in AHRI 440 and are outside of the
scope of certification.
HEATING CAPACITY
UNIT
TYPE
HPF
HPP
HPE
UNIT
SIZE
NOM.
CFM
06
08
10
12
14
16
18
20
600
800
1000
1200
1400
1600
1800
2000
1 ROW
QS
(MBH)
17.5
24.3
27.8
34.5
41.3
48.1
54.9
61.0
2 ROW
GPM
WPD
0.9
1.2
1.4
1.8
2.1
2.5
2.8
3.1
1.6
3.2
0.8
0.9
1.7
2.4
3.2
4.1
QS
(MBH)
30.2
41.8
52.4
61.8
73.4
85.1
96.8
107.5
3 ROW
GPM
WPD
1.5
2.1
2.7
3.2
3.8
4.4
5.0
5.5
1.4
2.6
4.1
1.8
2.6
3.6
4.9
6.1
QS
(MBH)
41.7
57.6
70.5
86.4
98.6
114.5
130.4
145.3
4 ROW
GPM
WPD
2.1
2.9
3.6
4.4
5.0
5.9
6.7
7.4
1.0
2.0
1.5
2.3
1.4
1.9
2.5
2.4
QS
(MBH)
48.3
66.5
80.6
98.8
117.1
126.5
144.7
161.7
GPM
WPD
2.5
3.4
4.1
5.1
6.0
6.5
7.4
8.3
0.9
1.6
1.0
1.6
1.8
0.6
0.7
0.9
NOTES:
1.Based on 70°F DB EAT, 180°F EWT, 40°F temperature drop, high fan speed.
2.HPE performance data varies from HPF and HPP units. Please use Web-Select®
at www.enviro-tec.com for HPE data.
COIL WEIGHT DATA
UNIT SIZE
1 ROW - DRY
1 ROW - WET
2 ROW - DRY
2 ROW - WET
3 ROW - DRY
3 ROW - WET
4 ROW - DRY
4 ROW - WET
5 ROW - DRY
5 ROW - WET
6 ROW - DRY
6 ROW - WET
7 ROW - DRY
7 ROW - WET
8 ROW - DRY
8 ROW - WET
6
8
10
12
14
16
18
20
4 [2]
5 [2]
8 [4]
11 [5]
12 [5]
16 [7]
17 [8]
20 [9]
20 [9]
25 [11]
24 [11]
32 [14]
29 [13]
37 [17]
32 [15]
42 [19]
5 [2]
7 [3]
10 [4]
14 [6]
14 [7]
20 [9]
20 [9]
27 [12]
23 [10]
30 [13]
29 [13]
40 [18]
32 [14]
42 [19]
37 [17]
48 [22]
6 [3]
8 [4]
11 [5]
16 [7]
17 [8]
24 [11]
24 [11]
33 [15]
27 [12]
36 [16]
35 [16]
49 [22]
39 [17]
51 [23]
44 [20]
57 [26]
6 [3]
9 [4]
13 [6]
18 [8]
19 [9]
27 [12]
27 [12]
37 [17]
30 [14]
41 [18]
39 [18]
55 [25]
43 [20]
56 [25]
49 [22]
63 [29]
8 [4]
11 [5]
16 [7]
21 [10]
24 [11]
32 [15]
33 [15]
42 [19]
33 [15]
45 [20]
46 [21]
63 [28]
47 [21]
60 [27]
53 [24]
68 [31]
9 [4]
12 [5]
17 [8]
24 [11]
26 [12]
36 [16]
32 [15]
48 [22]
40 [18]
54 [25]
53 [24]
73 [33]
57 [26]
72 [33]
63 [29]
82 [37]
9 [4]
14 [6]
19 [9]
27 [12]
28 [13]
41 [19]
35 [16]
55 [25]
43 [19]
60 [27]
57 [26]
83 [38]
61 [28]
78 [35]
67 [31]
88 [40]
10 [5]
14 [6]
20 [9]
29 [13]
30 [14]
43 [20]
38 [17]
58 [26]
45 [20]
64 [29]
59 [27]
86 [39]
65 [29]
82 [37]
71 [32]
93 [42]
NOTE: Unit weight data is in pounds [kilograms].
10ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
ELECTRIC HEAT
STANDARD FEATURES
• ETL listed as an assembly
for safety compliance
• Single point power connection
• Mounted in preheat position
• Automatic reset primary and back-up
secondary thermal limits
• Internal wiring rated at 105°C
• Integral electric heat assembly with
removable element for easy service
USEFUL FORMULAS
kW*
= CFM x DT x 1.085**
3413
1Ø AMPs =
kW x 1000
Volts
* 1kW = 3413 BTU/H
** Capacity at sea level
Altitude Considerations:
Reduce by 0.034 for each 1000 ft. of altitude
above sea level.
Example: 5000 ft./1000 ft. = 5
5 x 0.034 = 0.17
1.085 - 0.17 = 0.915
OPTIONAL FEATURES
• Solid state silent relay
• Door interlocking disconnect switch
• Main fusing (for equal to or less than 48 AMPs)
ELECTRICAL CALCULATIONS INFORMATION
1.Refer to MCA/MOP Calculator at www.enviro-tec.com for MCA and/or MOP calculations.
2.Non-Fused Door Interlock Disconnect Switch shall be sized according to MCA.
3.Fused Door Interlock Disconnect Switch and Main Fusing shall be sized according to MOP.
ELECTRIC HEAT SELECTION CHART (AMPS)
UNIT
SIZE
06
08
10
12
14
16
18
20
MBH
KW
VOLTS
115
208
230
277
115
208
230
277
115
208
230
277
115
208
230
277
115
208
230
277
115
208
230
277
115
208
230
277
115
208
230
277
6.8
2.0
8.5
2.5
10.2
3.0
11.9
3.5
13.7
4.0
17.1
5.0
17.4
9.6
8.7
7.2
17.4
9.6
8.7
7.2
17.4
9.6
8.7
7.2
21.7
12.0
10.9
9.0
21.7
12.0
10.9
9.0
21.7
12.0
10.9
9.0
26.1
14.4
13.0
10.8
26.1
14.4
13.0
10.8
26.1
14.4
13.0
10.8
30.4
16.8
15.2
12.6
30.4
16.8
15.2
12.6
30.4
16.8
15.2
12.6
34.8
19.2
17.4
14.4
34.8
19.2
17.4
14.4
34.8
19.2
17.4
14.4
34.8
19.2
17.4
14.4
34.8
19.2
17.4
14.4
34.8
19.2
17.4
14.4
34.8
19.2
17.4
14.4
34.8
19.2
17.4
14.4
43.5
24.0
21.7
18.1
43.5
24.0
21.7
18.1
43.5
24.0
21.7
18.1
43.5
24.0
21.7
18.1
43.5
24.0
21.7
18.1
43.5
24.0
21.7
18.1
43.5
24.0
21.7
18.1
20.5
6.0
AMPS
23.9
7.0
27.3
8.0
30.7
9.0
34.1
10.0
41.0
12.0
47.8
14.0
28.8
26.1
21.7
28.8
26.1
21.7
33.7
30.4
25.3
28.8
26.1
21.7
33.7
30.4
25.3
38.5
34.8
28.9
43.3
39.1
32.5
28.8
26.1
21.7
33.7
30.4
25.3
38.5
34.8
28.9
43.3
39.1
32.5
48.1
43.5
36.1
28.8
26.1
21.7
33.7
30.4
25.3
38.5
34.8
28.9
43.3
39.1
32.5
48.1
43.5
36.1
57.7
52.2
43.3
28.8
26.1
21.7
33.7
30.4
25.3
38.5
34.8
28.9
43.3
39.1
32.5
48.1
43.5
36.1
57.7
52.2
43.3
28.8
26.1
21.7
33.7
30.4
25.3
38.5
34.8
28.9
43.3
39.1
32.5
48.1
43.5
36.1
57.7
52.2
43.3
67.3
60.9
50.5
NOTES:
1. Shaded areas indicate kW and voltage options not available.
2. Available voltages are single phase, 60 hertz.
3. Heaters over 48 AMPs are subdivided and fused per NEC.
ENVIRO-TEC
11
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
FAN PERFORMANCE CURVES, PSC
GENERAL FAN NOTES, PSC MOTORS
1. Fan curves depict actual performance of each motor tap without any additional fan balance adjustment. Actual capacities
which fall below each curve can be obtained by adding an adjustment device. Units should not be run prior to installation of
downstream ductwork; otherwise, damage to the motor may result.
2. ENVIRO-TEC Fan Coil Units are equipped with permanent split-capacitor (PSC) motors with three separate taps (High,
Medium and Low) which provide variable horsepower outputs. Most often, size selections are conservative and actual CFM
requirements and/or external static pressure requirements are lower than those specified. In this case, the unit fan motor
can be run at low or medium tap, substantially reducing the operating cost of the unit.
3. All fan curves are for 115/1/60 motors and include pressure losses for cabinet, electric heater, and 3 or 4 row coil. Plenum
units include a clean 1” throwaway filter. For other coil configurations, adjust performance curves based on pressure losses
for the coils as selected with the ENVIRO-TEC Coil Selection Program.
4. See page 19 for fan motor electrical data.
5. For additional high static pressure applications and rating points, contact factory.
SIZE 06
ESP
(IN. W.G.)
SIZE 08
ESP
(IN. W.G.)
HPF Free Return
1
1
0.9
0.9
0.8
0.8
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.4
HPF Free Return
0.3
0.3
HIGH
0.2
0.2
MED
0.1
0.1
LOW
0
200
300
400
500
600
SCFM
700
800
400
500
600
700
800
900
1000
ESP
(IN. W.G.)
1
0.9
0.9
0.8
0.8
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.4
0.3
0.3
1100
3 ROW COIL
4 ROW COIL
SCFM
1
HPP Plenum Return
0.2
0.2
HIGH
0.1
0
300
HIGH
MED
LOW
200
3 ROW COIL
4 ROW COIL
HPP Plenum Return
ESP
(IN. W.G.)
0
200
300
400
500
600
0
700
SCFM
800
MED
LOW
200
300
400
500
600
700
800
900
SCFM
3 ROW COIL
4 ROW COIL
HPE Exposed Cabinet
ESP
(IN. W.G.)
HIGH
0.1
MED
LOW
HPE Exposed Cabinet
ESP
(IN. W.G.)
0.90
1.00
0.80
0.90
1000
3 ROW COIL
4 ROW COIL
0.80
0.70
0.70
0.60
0.60
0.50
0.50
0.40
0.40
0.30
0.30
0.20
0.10
0.00
0.20
HIGH
MED
200
300
400
SCFM
500
600
HIGH
0.10
LOW
700
3 ROW COIL
4 ROW COIL
0.00
MED
LOW
200
300
400
500
SCFM
600
700
800
900
3 ROW COIL
4 ROW COIL
12ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
FAN PERFORMANCE CURVES, PSC
SIZE 10
ESP
(IN. W.G.)
SIZE 12
ESP
(IN. W.G.)
HPF Free Return
1.00
0.9
0.90
0.8
0.80
0.7
0.70
0.6
0.00
0.09
0.18
0.27
0.37
0.47
0.57
0.67
0.76
0.81
0.83
0.60
0.50
0.40
0.30
0.5
0.4
0.3
0.20
0.2
0.00
HIGH
0.1
0.10
LOW
0.00
300
400
500
600
700
800
MED
900
1000
SCFM
1100
1200
0
400
0.90
0.8
0.80
0.40
900
1000
1100
1200
1300
1400
1500
1600
1700
3 ROW COIL
4 ROW COIL
HPP Plenum Return
0.6
0.5
0.4
0.3
0.20
0.10
300
400
0.00
0.07
0.14
0.23
0.32
0.42
0.51
0.61
0.70
5000.77
0.79
0.2
700
800
900
0
1000
1100
1200
1.00
0.90
0.90
0.80
0.80
0.70
0.70
0.60
0.60
0.50
0.50
0.40
0.40
0.30
0.30
0.20
0.20
0.10
0.10
600
700
SCFM
ENVIRO-TEC
HIGH
MED
LOW
500
600
700
800
900
800
900
1000
0.00
1100
3 ROW COIL
4 ROW COIL
1000
1100
1200
1300
1400
1500
1600
3 ROW COIL
4 ROW COIL
HPE Exposed Cabinet
ESP
(IN. W.G.)
HPE Exposed Cabinet
400
500
SCFM
1.00
300
400
3 ROW COIL
4 ROW COIL
SCFM
MED
LOW
MED
LOW
600
HIGH
0.1
HIGH
ESP
(IN. W.G.)
0.00
800
0.7
0.00
0.09
0.18
0.27
0.37
0.47
0.57
0.67
0.76
0.81
0.83
0.30
0.00
700
ESP
(IN. W.G.)
0.9
0.50
600
SCFM
1.00
0.60
500
HIGH
MED
LOW
3 ROW COIL
4 ROW COIL
HPP Plenum Return
ESP
(IN. W.G.)
0.70
HPF Free Return
HIGH
MED
LOW
400
500
600
700
800
900
SCFM
1000
1100
1200
1300
1400
3 ROW COIL
4 ROW COIL
13
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
FAN PERFORMANCE CURVES, PSC
SIZE 14
SIZE 16
HPF Free Return
ESP
(IN. W.G.)
1.00
0.9
0.90
0.8
0.80
0.7
0.70
0.6
0.60
0.5
0.50
0.4
0.40
0.3
0.30
0.2
HIGH
0.1
500
700
900
1100
1300
1500
1700
HIGH
LOW
1900
2100
3 ROW COIL
4 ROW COIL
SCFM
HPP Plenum Return
ESP
(IN. W.G.)
0.20
0.10
MED
LOW
0
HPF Free Return
ESP
(IN. W.G.)
1
0.00
600
800
1000
1200
1
1.10
1.00
0.8
0.90
SCFM
1600
MED
1800
2000
2200
2400
3 ROW COIL
4 ROW COIL
HPP Plenum Return
ESP
(IN. W.G.)
0.9
1400
0.80
0.7
0.70
0.6
0.60
0.5
0.50
0.4
0.40
0.3
0.30
0.2
HIGH
MED
0.1
500
700
900
1100
1500
1700
1900
3 ROW COIL
4 ROW COIL
HPE Exposed Cabinet
0.00
600
1.00
0.90
0.90
0.80
0.80
0.70
0.70
0.60
0.60
0.50
0.50
0.40
0.40
0.30
0.30
0.20
LOW
500
700
900
1100
SCFM
1300
1000
1400
1600
SCFM
1800
2000
2200
3 ROW COIL
4 ROW COIL
HPE Exposed Cabinet
0.10
MED
1500
1200
0.20
HIGH
0.10
800
ESP
(IN. W.G.)
1.00
0.00
MED
LOW
1300
SCFM
ESP
(IN. W.G.)
HIGH
0.10
LOW
0
0.20
1700
3 ROW COIL
4 ROW COIL
0.00
MED
HIGH
LOW
600
800
1000
1200
1400
SCFM
1600
1800
2000
3 ROW COIL
4 ROW COIL
14ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
FAN PERFORMANCE CURVES, PSC
SIZE 18
SIZE 20
HPF Free Return
ESP
(IN. W.G.)
ESP
(IN. W.G.)
1
HPF Free Return
1
0.9
0.9
0.8
0.8
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.4
0.3
0.3
0.2
0.2
HIGH
0.1
0
0.1
MED
LOW
600
800
1000
1200
1400
1600
1800
HIGH
2000
2200
2400
SCFM
LOW
2600
600
800
1000
1200
1400
3 ROW COIL
4 ROW COIL
HPP Plenum Return
ESP
(IN. W.G.)
0
1
1
0.9
0.9
1800
2000
MED
2200
2400
2600
3 ROW COIL
4 ROW COIL
HPP Plenum Return
ESP
(IN. W.G.)
1.1
1600
SCFM
0.8
0.8
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0
HIGH
0.1
0.1
LOW
600
800
1000
1200
ESP
(IN. W.G.)
1400
1600
SCFM
MED
1800
2200
2400
3 ROW COIL
4 ROW COIL
0
600
800
1000
ESP
(IN. W.G.)
HPE Exposed Cabinet
1.00
0.90
0.90
0.80
0.80
0.70
0.70
0.60
0.60
0.50
0.50
0.40
0.40
0.30
0.30
0.20
1200
1600
1400
1800
HPE Exposed Cabinet
0.20
MED
HIGH
0.10
0.10
LOW
600
800
1000
1200
1400
SCFM
ENVIRO-TEC
1600
2200
2400
3 ROW COIL
4 ROW COIL
2000
SCFM
1.00
0.00
MED
LOW
HIGH
2000
MED
HIGH
1800
2000
3 ROW COIL
4 ROW COIL
0.00
LOW
600
800
1000
1200
1400
SCFM
1600
1800
2000
2200
3 ROW COIL
4 ROW COIL
15
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
EC MOTOR OPTIONS
THE ENERGY EFFICIENT SOLUTION
Custom Applications —
Programmable Fan Operation
ENVIRO-TEC offers two high efficiency alternatives to
the PSC motor. These are brushless DC (BLDC) motors
with permanent magnet rotors, commonly referred to
as ECMs (electronically commutated motors.) EC
motors have been used for many years in residential
HVAC units, and have now become the norm for high
efficiency light commercial HVAC applications as well.
Boundless control opportunities arise for the EC motor
due to the controllability of the permanent magnet
rotor combined with programmable electronic
commutation. Various input signals
can direct the motor to behave in
an application specific mode. For
instance, multiple discrete fan
capacities can be achieved. In
addition, the fan speed can
be varied in response to the
space temperature load.
By default, the fan is also
programmed for a soft
start. This means that the
motor starts at a low speed
and slowly ramps up to the
required speed.
ENVIRO-TEC offers two different types of EC motor
in HP Series fan coil units. While each of these EC
motors significantly increases the operating efficiency
of ENVIRO-TEC fan coils, they also provide different
control and performance capabilities. For each motor,
fan speed control is accomplished through a microprocessor based controller that electronically controls the
speed of the motor. These motors provide peak efficiency ratings between 70 & 80% for most applications.
The first, full featured, EC motor offers two choices of
motor control:
1) Three speed (user adjustable) operation. Each of
the three speeds provides constant airflow, and can
be independently adjusted in the field.
2) Continuously variable speed operation, constant
airflow. This is achieved via proportional control
from a remote 2 – 10V DC signal. The second EC motor offering provides Constant
Torque operation. This motor is factory programmed
for three separate fixed torque settings, corresponding
to three speed, high efficiency operation. The three
speeds are not user adjustable. However, each of these
motors is supplied with a high capacity or standard
capacity plug which can be manually changed in the
field to assist in balancing the system.
ECM FEATURES AND BENEFITS
Ultra-High Motor & Controller Energy Efficiency
EC motors offer several advantages over PSC motors
in fan Coils, including variable speed, constant CFM
or constant Torque operation, and significantly higher efficiency. Due to the Permanent magnet rotor
and electronic commutation, the EC Motor maintains
approximately 75% efficiency at all speeds.
Designer / Owner Flexibility
The ECM incorporates ball bearings in lieu of sleeve
bearings typically utilized with an induction motor.
Unlike a sleeve bearing motor, the ECM does not have
a minimum RPM requirement for bearing lubrication.
This allows it to operate over a much wider speed
range, and provides for maintenance – free operation.
A reduced spare parts inventory is another plus.
Extended Motor Life
The high motor efficiency provides a significantly reduced operating temperature compared to an
induction motor. The lower temperature increases the
longevity of all electrical components and therefore
the life of the motor. The ball bearings do not require
lubrication and do not adversely impact the motor life.
Expected ECM motor life will be considerably longer
than a PSC motor, due to the reduced operating temperature and ball bearing components.
Application
Most variable speed electronic devices, including the
ECM operate with a rectified and filtered AC power.
As a result of the power conditioning, the input current
draw is not sinusoidal; rather, the current is drawn in
pulses at the peaks of the AC voltage. This pulsating
current includes high frequency components called harmonics. Harmonic currents circulate on the delta side
of a Delta-Wye distribution transformer. On the Wye
side of the transformer, these harmonic currents are
additive on the neutral conductor. A transformer used
in this type of application must be sized to carry the
output KVA that will include the KVA due to circulating
currents. Careful design must be provided when connecting single-phase products to three-phase systems
to avoid potential problems such as overheating of
neutral wiring conductors, connectors, and transformers. In addition, design consideration must be provided
to address the degradation of power quality by the
creation of wave shape distortion. In summary, proper
consideration must be given to the power distribution
transformer selection and ground neutral conductor
design to accommodate the 3-phase neutral AMPs
shown in the adjacent table. Specific guidelines are
available from the factory.
16ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
PERFORMANCE FAN CURVES, ECM™ MOTORS
GENERAL FAN NOTES, ECM MOTORS
1. F
an curves depict actual performance at the maximum speed of the ECM motor. Depending upon external
static pressure, flow rates are achievable anywhere within the curve boundary by adjusting the motor speed
through the electronic interface control board.
2. Airflow rates will be constant for varying degrees of external static pressure caused by filter loading or other
duct system variables once the electronic interface control board is set to desired flow rate.
3. Fan curves compensate for the pressure losses of the unit cabinet, coil rows, filter loading and other optional
appurtances.
4. ECM motors operate using a rectified AC power source that is converted to a non-sinusoidal DC power wave
form. Harmonic distortion may occur and circulate on the power distribution system. Circulating harmonic currents are potentially additive on the neutral conductors of 3-phase, 4-wire Wye distribution systems. Neutral
conductors must be engineered to account for the additional current (amperes) encountered.
5. See page 19 for ECM motor electrical data.
HPP Size 06 With 1/3 HP ECM Motor
HPP Size 08 With 1/3 HP ECM Motor
1.1
0.9
1.0
0.8
0.9
0.7
0.6
0.7
ESP (IN. W.G.)
ESP (IN. W.G.)
0.8
0.6
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.1
0.0
0.5
200
300
400
500
600
700
0.0
300
400
1.1
0.9
1.0
0.8
0.9
700
800
900
0.8
0.7
0.6
ESP (IN. W.G.)
ESP (IN. W.G.)
600
HPP Size 12 With (2) 1/3 HP ECM Motors
HPP Size 10 With 1/3 HP ECM Motor
1.0
0.5
0.4
0.3
0.7
0.6
0.5
0.4
0.3
0.2
0.2
0.1
0.1
0.0
500
SCFM (300 Minimum, 800 Maximum)
SCFM (200 Minimum, 700 Maximum)
0.0
300
400
500
600
700
800
SCFM (300 Minimum, 1000 Maximum)
ENVIRO-TEC
900
1000
400
600
800
1000
1200
1400
SCFM (200 Minimum, 1500 Maximum)
17
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
PERFORMANCE FAN CURVES, ECM™ MOTORS
HPP Size 16 With (2) 1/3 HP ECM Motors
1.0
1.0
0.9
0.9
0.8
0.8
0.7
0.7
0.6
0.6
ESP (IN. W.G.)
ESP (IN. W.G.)
HPP Size 14 With (2) 1/3 HP ECM Motors
0.5
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.1
0.0
600
800
1000
1200
1400
1600
0.0
1800
600
800
1000
SCFM (600 Minimum, 1800 Maximum)
1200
1400
1600
1800
SCFM (600 Minimum, 1900 Maximum)
HPP Size 18 & 20 With (2) 1/3 HP ECM Motors
1.0
0.9
0.8
0.7
ESP (IN. W.G.)
0.6
0.5
0.4
0.3
0.2
0.1
0.0
600
800
1000
1200
1400
1600
1800
2000
SCFM (600 Minimum, 2000 Maximum)
18ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
MOTOR AND FAN DATA
MOTOR AND FAN DATA
UNIT
SIZE
06
08
10
12
14
16
18
20
FAN
SPEED
High
Mediium
Low
High
Medium
Low
High
Medium
Low
High
Medium
Low
High
Medium
Low
High
Medium
Low
High
Medium
Low
High
Medium
Low
MOTOR HP
(Quantity)
PSC
ECM
(1) 1/6
(1) 1/8
(1) 1/3
(1) 1/10
(1) 1/4
(1) 1/6
(1) 1/3
(1) 1/8
(1) 1/4
(1) 1/5
(1) 1/3
(1) 1/6
(2) 1/6
(2) 1/8
(2) 1/3
(2) 1/10
(2) 1/4
(2) 1/6
(2) 1/3
(2) 1/8
(2) 1/4
(2) 1/5
(2) 1/3
(2) 1/6
(2) 1/4
(2) 1/5
(2) 1/3
(2) 1/6
(2) 1/4
(2) 1/3
(2) 1/5
(2) 1/6
# OF
FANS
1
1
1
2
2
2
2
2
AMPs @ 120/1/60
AMPs @ 208-230/1/60
ECM
ECM
PSC
PSC
FLA 3-Phase Neutral Current
FLA 3-Phase Neutral Current
2.6
1.0
2.1 5.0
0.9 2.8
8.7
4.8
1.8
0.6
3.8
1.6
3.3 5.0
1.0 2.8
8.7
4.8
2.6
0.8
4.9
2.0
4.1 5.0
1.4 2.8
8.7
4.8
3.2
1.2
5.2
2.0
4.2 10.0
1.8 5.6
17.3
9.7
3.6
1.2
7.6
3.2
6.6 10.0
2.0 5.6
17.3
9.7
5.2
1.6
9.8
4.0
8.2 10.0
2.8 5.6
17.3
9.7
6.4
2.4
9.8
4.0
8.2 10.0
2.8 5.6
17.3
9.7
6.4
2.4
9.8
4.0
17.3
9.7
8.2 10.0
2.8 5.6
6.4
2.4
AMPs @ 277/1/60
ECM
PSC
FLA 3-Phase Neutral Current
0.9
0.8 2.6
4.5
0.7
1.3
0.8 2.6
4.5
0.7
1.9
1.6 2.6
4.5
1.3
1.8
1.6 5.2
9.0
1.4
2.6
1.6 5.2
9.0
1.4
3.8
3.2 5.2
9.0
2.6
3.8
3.2 5.2
9.0
2.6
3.8
9.0
3.2 5.2
2.6
NOTES:
1.Motor electrical data is nameplate data. Actual data will vary with application.
2.Motors nameplated for 208-230/1/60. Data is at 230 volts.
3.ECM motors operated on 208/1/60 power result in reduced airflow.
ENVIRO-TEC
19
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
DIMENSIONAL DATA
HPF FREE RETURN UNITS
Drawings are not to scale and are not for installation purposes.
20ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
DIMENSIONAL DATA
HPF FREE RETURN UNITS
Drawings are not to scale and are not for installation purposes.
ENVIRO-TEC
21
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
DIMENSIONAL DATA
HPP PLENUM UNITS
Drawings are not to scale and are not for installation purposes.
22ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
DIMENSIONAL DATA
HPP PLENUM UNITS
Drawings are not to scale and are not for installation purposes.
ENVIRO-TEC
23
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
DIMENSIONAL DATA
HPM WITH MIXING BOX
Drawings are not to scale and are not for installation purposes.
24ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
DIMENSIONAL DATA
HPE EXPOSED CABINET UNITS
Drawings are not to scale and are not for installation purposes.
ENVIRO-TEC
25
Catalog: ET115.26-EG3 (615)
High-Performance, Horizontal Fan-Coil Units
DIMENSIONAL DATA
HP TELESCOPING / FILTER AND SOLID BOTTOM ACCESS PANELS
Drawings are not to scale and are not for installation purposes.
26ENVIRO-TEC
High-Performance, Horizontal Fan-Coil Units
Catalog: ET115.26-EG3 (615)
GUIDE SPECIFICATIONS
GENERAL
FAN ASSEMBLY
Furnish and install ENVIRO-TEC Model HP Horizontal
Concealed Direct Drive Fan Coil Units where indicated on
the plans and in the specifications. Units shall be completely
factory assembled, tested and shipped as one piece. All
units shall be capable of meeting or exceeding the scheduled capacities for cooling, heating and air delivery. All unit
dimensions for each model and size shall be considered
maximums. Units shall be ETL listed in compliance with UL/
ANSI Standard 1995, and be certified as complying with the
latest edition of AHRI Standard 440.
Unit fan shall be a dynamically balanced, forwardly curved,
DWDI centrifugal type constructed of 18 gauge zinc coated
galvanized steel for corrosion resistance. Motors shall be high
efficiency, permanently lubricated sleeve bearing, permanent
split-capacitor type with UL and CSA listed automatic reset
thermal overload protection and three separate horsepower
taps. Single speed motors are not acceptable.
CONSTRUCTION
All unit chassis shall be fabricated of heavy gauge galvanized
steel panels. All exterior panels shall be insulated with 1/2”
thick fiberglass insulation with a maximum k value of .24 (BTU • in) / (hr • ft2 • °F) and rated for a maximum air velocity of 5000 f.p.m. Insulation must meet all requirements of
ASTM C1071 (including C665), UL 181 for erosion, and carry
a 25/50 rating for flame spread/smoke developed per ASTM
E-84, UL 723 and NFPA 90A.
Option: Provide foil-faced insulation in lieu of standard. Foil
insulation shall meet or exceed the requirements stated
above, and in addition meet ASTM Standards C-665 and
C-1136 for biological growth in insulation. Insulation shall be
lined with aluminum foil, fiberglass scrim reinforcement, and
30 pound kraft paper laminated together with a flame resistant
adhesive. All exposed edges shall be sealed to prevent any
fibers from reaching the air stream.
Option: Provide Elastomeric Closed Cell Foam Insulation
in lieu of standard. Insulation shall conform to UL 181 for
erosion and NFPA 90A for fire, smoke and melting, and
comply with a 25/50 Flame Spread and Smoke Developed
Index per ASTM E-84 or UL 723. Additionally, insulation
shall comply with Antimicrobial Performance Rating of 0, no
observed growth, per ASTM G-21. Polyethylene insulation
is not acceptable.
All concealed units shall have a minimum 1 1/4” duct collar
on the discharge. Plenum units shall have a minimum 1” duct
collar on the return.
Option: For concealed units, provide a hinged bottom access
panel either solid or with bottom return single deflection grille.
A telescoping plenum section is available with bottom return
option.
All exposed units shall have exterior panels fabricated of
galvannealed steel.
Option: For exposed units, the side and bottom access
panels shall be attached with quick open fasteners to allow
for easy removal and access for service.
Option: For exposed units, provide double deflection discharge grille and either a rear return or bottom return single
deflection grille, powder coat painted to match unit color.
Supply and return duct connections are available.
The fan assembly shall be easily removable for servicing the
motor and blower at, or away from the unit. The entire fan
assembly shall be able to come out of the unit by removing
four nuts per fan and unplugging the motor(s). Plenum unit fan
assemblies shall be easily serviced through the filter opening
or through the bottom panel.
Option: Provide an electronic (SCR) fan speed controller as
an aid in balancing the fan capacity. The speed controller shall
have a turn down stop to prevent the possibility of harming the
motor bearings, and incorporate electrical noise suppression
to minimize noise on the incoming power lines. The SCR
fan speed controller is only available for high speed setting.
Option: Provide Electronically Commutated (EC) Motor
capable of operation with 3 speed thermostat.
Option: Provide Electronically Commutated (EC) Motor
capable of operation with 3 speed thermostat. Each speed
shall be manually adjustable in the field. All manual speed
adjustments shall be stored in non-volatile memory. Option: Provide Electronically Commutated (EC) Motor
capable of variable speed operation. Motor shall be capable
of accepting a 2-10 VDC output from BAS.
COILS
All coils shall be AHRI 410 certified and tagged with an AHRI
410 label.
All cooling and heating coils shall optimize rows and fins per
inch to meet the specified capacity. Coils shall have seamless
copper tubes and shall be mechanically expanded to provide
an efficient, permanent bond between the tube and fin. Coil
tubes shall be 3/8” outside diameter with .012” tube wall
thickness. Fins shall have high efficiency aluminum surface
optimized for heat transfer, air pressure drop and carryover.
All coils shall be hydrostatically tested at 450 PSIG air pressure under water, and rated for a maximum of 300 PSIG
working pressure at 200°F.
Direct expansion cooling coils shall include a fixed orifice distributor. All evaporator coils shall be factory sealed and charged
with a minimum 5 PSIG nitrogen or refrigerated dry air.
Steam coils shall be standard steam type suitable for
temperatures above 35°F and 15 PSIG maximum working
pressure.
All coils shall be provided with a manual air vent fitting to
allow for coil venting.
Unit mounting shall be by hanger holes provided at a minimum of four locations.
Option: Provide coil tubes with 1/2” outside diameter and
.016” tube wall thickness.
SOUND
Option: Provide coil tubes with 1/2” outside diameter and
.025” tube wall thickness.
Units shall have published sound power level data tested in
accordance with AHRI Standard 260-01.
ENVIRO-TEC
Option: Provide automatic air vents in lieu of manual air
vents.
27
GUIDE SPECIFICATIONS
Cooling and heating coils shall be in a common tube sheet.
Water coils on concealed models shall be field reversible for
right or left hand connections.
Heating coils shall be furnished in the reheat or preheat
position.
DRAIN PANS
Primary condensate drain pans shall be single wall; heavy
gauge galvanized steel for corrosion resistance, and extend
under the entire cooling coil. Drain pans shall be of onepiece construction and be double sloped for condensate
removal. Drain pans shall be field reversible for right or left
hand connections.
The drain pan shall be externally insulated with a fire retardant,
closed cell foam insulation. The insulation shall carry no more
than a 25/50 Flame Spread and Smoke Developed Rating per
ASTM E-84 and UL 723 and an Antimicrobial Performance
Rating of 0, no observed growth, per ASTM G-21.
Option: Provide a single wall primary drain pan constructed
entirely of heavy gauge stainless steel for superior corrosion
resistance. Stainless steel drain pans shall be externally
insulated and meet or exceed the requirements stated above.
Option: Provide a secondary drain connection on the primary
drain pan for condensate overflow.
Option: Provide a condensate overflow switch in the primary
drain pan for condensate overflow.
FILTERS
All plenum and exposed units shall be furnished with a minimum 1” nominal glass fiber throwaway filter. Filters shall be
tight fitting to prevent air bypass. Plenum and exposed unit
filters shall be easily removable from the bottom of the unit
without the need for tools.
Option: Provide unit with 1” or 2” pleated filters rated at
25-30% efficiency and MERV 6 based on ASHRAE 52.2 1999.
MIXING BOX SECTION
Provide a fully insulated integral mixing box section with
return and outside air dampers, including the interconnecting
damper linkage. Mixing box section shall be shipped attached
to the concealed plenum unit as an assembly.
Option: Factory-provided damper actuator to be mounted
and wired to control enclosure.
ELECTRICAL
Units shall be furnished with single point power connection.
Provide an electrical junction box with terminal strip for motor
and other electrical terminations. The factory mounted terminal wiring strip consists of a multiple position screw terminal
block to facilitate wiring terminations for the electric control
valves and thermostats.
ELECTRIC HEAT
Furnish an electric resistance heating assembly as an integral
part of the fan coil unit, with the heating capacity, voltage and
kilowatts scheduled. The heater assembly shall be designed
and rated for installation on the fan coil unit without the use
of duct extensions or transitions, and be located in the unit
as to not expose the fan assembly to excessive leaving air
temperatures that could affect motor performance.
The heater and unit assembly shall be listed for zero clearance and meet all NEC requirements, and be ETL listed
with the unit as an assembly in compliance with UL/ANSI
Standard 1995.
All heating elements shall be open coil type Ni-Chrome wire
mounted in ceramic insulators and located in an insulated
heavy gauge galvanized steel housing. All elements shall terminate in a machine staked stainless steel terminal secured
with stainless steel hardware for corrosion resistance. The
element support brackets shall be spaced no greater than
3-1/2” on center. All internal wiring shall be rated for 105°C
minimum.
All heaters shall include over temperature protection consisting of an automatic reset primary thermal limit and back
up secondary thermal limit. All heaters shall be single stage
unless noted otherwise on the plans.
All units with electric heat shall be provided with an incoming
line power distribution block, designated to accept single point
power wiring capable of carrying 125% of the calculated load
current.
PIPING PACKAGES
Provide a standard factory assembled valve piping package
to consist of a 2 or 3 way, on/off, motorized electric control
valve and two ball isolation valves. Control valves are piped
normally closed to the coil. Maximum entering water temperature on the control valve is 200°F, and maximum close-off
pressure is 40 PSIG (1/2”), 20 PSIG (3/4”), or 17 PSIG (1”).
Maximum operating pressure shall be 300 PSIG.
Option: Provide 3-wire floating point modulating control valve
(fail-in-place) in lieu of standard 2-position control valve with
factory assembled valve piping package.
Option: Provide high pressure close-off actuators for 2-way
on/off control valves. Maximum close-off pressure is 50 PSIG
(1/2”), 25 PSIG (3/4”), or 20 PSIG (1”).
Option: Provide either a fixed or adjustable flow control
device for each piping package.
Option: Provide unions and/or pressure-temperature ports
for each piping package.
Piping package shall be completely factory assembled,
including interconnecting pipe, and shipped separate from
the unit for field installation on the coil, so as to minimize the
risk of freight damage.
ENVIRO-TEC is a registered trademark of Johnson Controls, Inc. in the United States of America and other countries. Other
trademarks used herein may be trademarks or registered trademarks of other companies.
Catalog: ET115.26-EG3 (615) Supersedes ET115.26-EG3 (909)
© 2015 Johnson Controls, Inc. P.O. Box 423, Milwaukee, WI 53201 Printed in USA
www.enviro-tec.com
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