Enviro HP Series Owner's manual

HP SERIES FAN COILS
Supersedes ET115.24-NOM1 (0420) Form ET115.24-NOM1 (0520)
INTRODUCTION
ENVIRO-TEC fan coils represent a prudent investment
which can, with proper installation, operation, and
regular maintenance, give trouble-free operation and
long service.
Your equipment is initially protected under the
manufacturer’s standard warranty; however, this
warranty is provided under the condition that the steps
outlined in this manual for initial inspection, proper
installation, regularperiodic maintenance,and everyday
operation of the equipment be followed in detail. This
HP SERIES
HPP Plenum Return Shown
manual should be fully reviewed in advance of any
actual work being done on the equipment. Should
any questions arise, please contact your local Sales
Representative BEFORE proceeding.
The equipment covered by this manual is available with
a vast variety of options and accessories. Consult the
approved unit submittal, order acknowledgement, and
other manuals for details on the options and accessories
provided with the equipment on each project.
INSTALLATION, OPERATION & MAINTENANCE

ENVIRO-TEC
2
FORM ET115.24-NOM1 (0520)
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Precautions ..........................3
TABLE OF CONTENTS
Section One - Receipt & Initial Installation
Code Compliance...........................4
Receipt & Initial Installation ...................4
Unpacking & Inspection ......................4
Handling & Installation .......................5
Drain Pan & Auxiliary Drip Pan.................5
Drain Pan & Auxiliary Drip Pan Removal . . . . . . . . . 6
Cooling/Heating Medium Connections...........7
Return Air Locations.........................7
Plenum Box Service Panel....................8
Plenum Box Removal........................8
Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Piping Connections..........................8
Ductwork Connections . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Connections .......................9
Control Enclosure...........................9
Optional Telescoping Bottom Panel ............10
Optional Telescoping Bottom PanelAssembly,
Typical Installation Instructions ............... 11
Optional Telescoping Bottom Panel Dimensions ..12
Service And Clearance Requirements . . . . . . . . . . 13
Section Two - Start-Up
General..................................18
Cooling/Heating System.....................18
Air System Balancing .......................19
Water System Balancing ....................19
Controls Operation .........................19
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Motor/Blower Assembly .....................19
Motor & Fan Data..........................20
Section Three - Inspection &
Start-Up Checklist
Inspection & Start-Up Checklist ...............22
Section Four - Normal Operation &
Periodic Maintenance
Fan Assembly Removal .....................23
Coil .....................................23
Unit Weight Data - 1/2” & 3/8” Coils ............24
Electric Resistance Heater Assembly...........25
Electrical Wiring & Controls ..................25
Valves & Piping............................25
Electric Heat Rack Removal..................26
Drain....................................27
Filters, Throwaway .........................27
Face Area, Free Area, and Filter Sizes..........28
Factory Replacement Parts ..................28
Optional Item Installation ....................29
Condensate Pump......................29
Current Switch Device ...................29
Discharge Air Sensor....................30
Condensate Float Switch Installation........30
HP Series Coil Connection Sizes..............31
Section Five - Appendix
Component Installation, Operation, and
Maintenance Manuals ......................32

ENVIRO-TEC 3
FORM ET115.24-NOM1 (0520)
SAFETY SYMBOLS
The following symbols are used in this document to alert the reader to areas of potential hazard:
CAUTION identies a hazard which
could lead to damage to the machine,
damage to other equipment and/or
environmental pollution. Usually an
instruction will be given, together with
a brief explanation.
NOTE is used to highlight additional
information which may be helpful to
you.
DANGER indicates an imminently
hazardous situation which, if not
avoided, will result in death or seri-
ous injury.
WARNING indicates a potentially haz-
ardous situation which, if not avoided,
could result in death or serious injury.
SAFETY PRECAUTIONS
The equipment covered by this manual is designed for
safe and reliable operation when installed and operated
within its design specication limits. To avoid personal
injury or damage to equipment or property while
installing or operating this equipment, it is essential
that qualied, experienced personnel perform these
functions using good judgment and safe practices. See
the following cautionary statements.
ELECTRICAL SHOCK HAZARDS.
All power must be disconnected prior
to installation and servicing this equip-
ment. More than one source of power
may be present. Disconnect all power
sources to avoid electrocution or shock
injuries.
MOVING PARTS HAZARDS. Mo-
tor and Blower must be disconnected
prior to opening access panels. Motors
can start automatically, disconnect
all power and control circuits prior to
servicing to avoid serious crushing or
dismemberment injuries.
HOT PARTS HAZARD. Electric Re-
sistance heating elements must be dis-
connected prior to servicing. Electric
Heaters may start automatically, dis-
connect all power and control circuits
prior to servicing to avoid burns.
Check that the unit assembly and com-
ponent weights can be safely supported
by rigging and lifting equipment.
All assemblies must be adequately
secured during lifting and rigging by
temporary supports and restraints un-
til equipment is permanently fastened
and set in its nal location.
All unit temporary and permanent
supports must be capable of safely
supporting the equipment’s weight and
any additional live or dead loads that
may be encountered. All supports must
be designed to meet applicable local
codes and ordinances.
All fastening devices must be designed
to mechanically lock the assembly in
place without the capability of loosen-
ing or breaking away due to system
operation and vibration.
Protect adjacent ammable materials
when brazing. Use ame and heat pro-
tection barriers where needed. Have
re extinguisher available and ready
for immediate use.

ENVIRO-TEC
4
FORM ET115.24-NOM1 (0520)
CODE COMPLIANCE
This equipment has been manufactured and certied in
accordance with UL1995-Standard for Safety, Heating
and Cooling Equipment (CAN/CSA C22.2 NO 236-
M90) and bears the Electrical Testing Laboratories
(ETL) Mark under ETL Control No: 41629.
RECEIPT & INITIAL INSTALLATION
NO ATTEMPT SHOULD BE MADE
TO HANDLE, INSTALL, OR SER-
VICE ANY UNIT WITHOUT FOL-
LOWING SAFE PRACTICES RE-
GARDING MECHANICAL EQUIP-
MENT.
• All power must be disconnected before any in-
stallation or service should be attempted. More
than one power source may be supplied to a unit.
Power to remote mounted control devices may
not be supplied through the unit. Never wear
bulky or loose tting clothing when working on
any mechanical equipment. Gloves should only
be worn when required for proper protection
from heat or other possible injury. Safety glasses
or goggles should always be worn when drill-
ing, cutting, or working with chemicals such as
refrigerants or lubricants.
• Never pressurize any equipment beyond specied
operating pressures. Always pressure test with
an inert uid or gas such as clear water or dry
nitrogen to avoid possible damage or injury in
the event of a leak or component failure during
testing.
• Always protect adjacent flammable material
when welding or soldering. Use suitable heat
shield material to contain sparks or drops of
solder. Have re extinguisher available for use
when welding or brazing.
The manufacturerassumes no responsibilityfor personal
injury or property damage resulting from improper
or unsafe practices during the handling, installation,
service, or operation of any equipment.
UNPACKING & INSPECTION
All unitsare carefullyinspected atthe factorythroughout
the manufacturing process undera strict detailed quality
assurance program, and where possible, all major
components and subassemblies are carefully tested for
proper operation and veried to be in full compliance
with the factory manufacturing documents. Customer
furnished components such as control valves, switches
and DDC controls are not factory tested.
Each unit is carefully packaged for shipment to avoid
damage during normal transport and handling. The
equipment should always be stored in a dry place in the
proper orientation as marked on the carton.
All shipments are made F.O.B. factory and it is the
responsibility of the receiving party to inspect the
equipment upon arrival. Any obvious damage to the
carton and/or its contents should be recorded on the bill
of lading and a claim should be led with the freight
carrier.
After determining the condition of the carton exterior,
carefully remove each unit from the carton and inspect
for hidden damage.At this time check to make sure that
“furnished only” items such as switches, thermostats,
etc. are accounted for. Any hidden damage should be
recorded and immediately reported to the carrier and a
claim led as before. In the event a claim for shipping
damage is led, the unit, shipping carton, and all packing
must be retained for physical inspection by the freight
carrier. All equipment should be stored in the factory-
shipping carton with internal packing in place until
installation.
At the time of receipt, the equipment type and
arrangement should be verified against the order
documents. Should any discrepancy be found, the local
Sales Representative should be notied immediately
so that the proper action may be instituted. Should
any question arise concerning warranty repairs, the
factory must be notified BEFORE any corrective
action is taken. Where local repairs or alterations can
be accomplished, the factory must be fully informed as
to the extent and expected cost of those repairs before
work is begun. Where factory operations are required,
the factory must be contacted for authorization to return
equipment and a ReturnAuthorization Number will be
issued. Unauthorized return shipments of equipment
and shipments notmarked with anauthorization number
will be refused. In addition, the manufacturer will not
accept any claims for unauthorized expenses.
SECTION ONE -RECEIPT & INITIAL INSTALLATION

ENVIRO-TEC 5
FORM ET115.24-NOM1 (0520)
HANDLING & INSTALLATION
While all equipment is designed for durability and
fabricated for sturdy construction and may present a
rugged appearance, great care must be taken to assure
that no force or pressure be applied to the coil, piping
or drain stub-outs during handling. Also, depending
on the options and accessories, some units could
contain delicate components that may be damaged by
improper handling. Wherever possible, all units should
be maintained in an upright position and handled by
the chassis as close as possible to the mounting point
locations.
In the case of a full cabinet unit, the unit must obviously
be handled by the exterior casing. This is acceptable
providing the unit is again maintained in an upright
position and no impact forces are applied that may
damage internal components, access panels, or painted
surfaces. The equipment covered in this manual IS
NOT suitable for outdoor installations or hazardous/
explosive environments. The equipment should never be
stored or installed where it may be subjected to a hostile
environment such as rain, snow, extreme temperatures
or corrosive or chemical laden atmospheres.
During and after installation, special care must be taken
to prevent foreign material such as paint, plaster, and
drywall dust from being deposited in the drain pan or
on the motor or blower wheels. Failure to do so may
have serious adverse effects on unit operation and in
the case of the motor and blower assembly, may result
in immediate or premature failure. All manufacturers’
warranties are void if foreign material is allowed to be
deposited on the motor or blower wheels of any unit.
Some unitsand/or job conditionsmay require some form
of temporary covering during construction.
While the manufacturer does not become involved
in the design and selection of support methods and
components, it should be noted that unacceptable
system operating characteristics and/or performance
might result from improper orinadequate unit structural
support. In addition, adequate clearance must be
provided for service and removal of the equipment and
its accessory components. Anchoring the equipment
in place is accomplished by using the mounting points
provided and positioning the unit to maintain the unit
on a LEVELplane.All units are supplied with hanging
holes for use with all thread rods. ALL hanging holes
MUST be utilized when installing suspended units.
FOR SEISMIC CERTIFIED
INSTALLATION, REFERENCE
ENVIRO-TEC SEISMIC
INSTALLATION DOCUMENT.
DRAIN PAN
The sloped, insulated drain pan can be equipped with
a secondary drain connection. Standard drain pans are
externally insulated, single wall galvanized steel. The
drain pan is easilyremovable for cleaning. The optional
auxiliary drip pan to catch condensed moisture from
valves and piping is easily attachable to the drain pan.
Care must be takento ensure that the unitdrain pan does
not slope away from the outlet connection.
AUXILIARY DRIP PAN
The auxiliary drip pan mounts directly to the unit drain
pan using (2) #10 x 1/2” screws.
After the connections are completed, the system should
then be tested for leaks. Since some components are not
designed to hold pressure with a gas, hydronic systems
should be tested with water.

ENVIRO-TEC
6
FORM ET115.24-NOM1 (0520)
Step 2: Visually Locate Drain Pan
Retention Studs.
Step 1: Locate Drain Pan Retention Clip.
Press Upward Until Clip Clears Edge Of
Drain Pan.
Step 3: Apply Slight Upward Pressure
to Drain Pan.
TOOL-FREE DRAIN PAN REMOVAL
For drain pan removal, follow the four-step
process illustrated below.
AUXILIARY DRIP PAN REMOVAL
The auxiliary drip pan is easily removable for cleaning.
For auxiliary drip pan removal, follow the two-step
process illustrated below, by locating and thenremoving
the two (2) retaining screws which secure the auxiliary
drip pan to the side of the main unit plenum.
Step 1: Locate The Two (2) Retaining Screws
Which Secure The Auxiliary Drip Pan To The Main
Unit Plenum.
Step 2: Remove Both Retaining Screws And
Carefully Remove The Auxiliary Drip Pan From
The Unit.
Step 4: Disengage Pan Via 45° Downward
Motion, Then Remove Drain Pan From Unit
To prevent condensation drip outside
of the drain pan area, drain pan re-
tention clip must be returned to its
original engagement position within
the drain pan area (see below)

ENVIRO-TEC 7
FORM ET115.24-NOM1 (0520)
All water coils must be protected from
freezing after initial lling with water.
Even if the system is drained, unit coils
may still hold enough water to cause
damage when exposed to temperatures
below freezing.
COOLING/HEATING MEDIUM CONNECTIONS
Refrigerant systems should be tested with dry nitrogen
rather than air to prevent the introduction of moisture
into the system. In the event that leaking or defective
components are discovered, the Sales Representative
must be notied BEFORE any repairs are attempted.
All leaks should be repaired before proceeding with
the installation.
ValvesandTXVsshouldbesecuredorsupportedtoavoid
damage to coil headers or distributor tubes.All valves,
pipes, and components must be sufciently supported
to ensure structural integrity and proper operation of the
unit. To prevent condensation accumulation and runoff,
chilled water valve packages must be insulated, or
preferably, utilize a factory-provided auxiliary drip tray.
After system integrity has been established the piping
should be insulated in accordance with the project
specications. ALL chilled water piping and valves or
refrigerant suction piping not located over drain pans
must be insulated to prevent damage from sweating.
This includes factory and eld piping inside the unit
cabinet.
The drain should always be connected and piped to an
acceptable disposal point. For proper moisture carry-
off, the drain piping should be sloped away from the
unit at least 1/8” per foot.A drain trap may be required
by local codes and it is strongly recommended for odor
containment.
RETURN AIR LOCATION
This unit is equipped with a eld reversible rear or
bottom ducted air return for plenum style units. To
change the return air location, remove the reversible
plenum box panel and the lter rack. Rotate both the
reversible panel and lter rack 180 degrees. Replace
the reversible panel in the old lter rack position and
fasten using the supplied screws. Fasten the lter rack to
the location where the reversible panel was and replace
the lter(s) as described above.
“H” MUST BE AT LEAST
1 INCH PLUS CASING
STATIC PRESSURE
H
X
“X” MUST BE AT
LEAST 1 INCH
Condensate Trap
Trap detail for positive cabinet
static pressure
Bottom Return
Rear Return

ENVIRO-TEC
8
FORM ET115.24-NOM1 (0520)
PLENUM BOX SERVICE PANEL
The service panel on the plenum box is easily removable
by removing the screws located on the sides and bottom
of the service panel.
PLENUM BOX REMOVAL
In most cases this unit is fully serviceable without the
need for removal of the plenum box.
However, should the need arise, the plenum box is easily
removable by removingthe screws attaching the plenum
box to the sides, top and rear of the coil casing.
COILS
All fan coils are available in 2 or 4 pipe congurations.
On units with water coils, the maximum water pressure
applied to the unit should never exceed 450 PSIG at
200°F.
On units with steam heating coils, the maximum steam
pressure applied to the unit should never exceed 15
PSIG.
The drain piping and steam trap should be sized and
routed to allow for proper condensate ow. (Minimum
ambient temperature 35°F. Coils may freeze.)
PIPING CONNECTIONS
Toxic residues and loose particles
resulting from manufacturing and
eld piping techniques such as joint
compounds, soldering ux, and metal
shavings may be present in the unit
and the piping system. Special con-
sideration must be given to system
cleanliness when connecting to solar,
domestic or potable water systems.
SubmittalsandProductCatalogsdetailingunitoperation,
controls, and connections should be thoroughly
reviewed BEFORE beginning the connection of the
various cooling and/or heating mediums to the unit.
All accessory valve packages should be installed as
required, and all valves should be checked for proper
operation.
If coil and valve package connections are to be made
with “sweat” or solder joint, care should be taken to
assure that no components in the valve package are
subjected to ahigh temperature which maydamage seals
or other materials. Many two-position electric control
valves, depending on valve operation, are provided with
a manual-opening lever. This lever should be placed
in the “open” position during all soldering or brazing
operations. Valve bodies should be wrapped with a wet
rag to help dissipate heat encountered during brazing.
Use a brazing alloy to make connections. Soft solder is
not recommended.
If the valve package connection at the coil is made with
a union, the coil side of the union must be prevented
from twisting(“backed up”) duringtightening to prevent
damage to the coil tubing. Over-tightening must be
avoided to prevent distorting the union seal surface
and destroying the union. In the case of eld installed
valves and piping, the chilled water valve cluster (or
expansion valve on DX units) should be installed in
such a way that any dripping or sweating is contained
in the auxiliary drip pan or other device. Valves and
TXV’s should be secured or supported to avoid damage
to coil headers or distributor tubes.
DUCTWORK CONNECTIONS
All ductwork and/or supply and return grilles should
be installed in accordance with the project plans and
specications. If not included on the unit or furnished
from the factory, ENVIRO-TEC supply and return
grilles are available in a variety of types.

ENVIRO-TEC 9
FORM ET115.24-NOM1 (0520)
All units must be installed in non-combustible areas.
Some models are designed to be connected to ductwork
with a MINIMUM amount of external static pressure.
Consult the approvedsubmittals and the product catalog
for unit external static pressure limitations.
Units provided with outside air for ventilation should
have some form of low temperature protection to
prevent coil freeze-up. Outside air should be pretreated
for best results.
It should be noted that none of these methods would
adequately protect a coil in the event of power failure.
The safest method of freeze protection is to use glycol
in the proper percent solution for the coldest expected
air temperature. Consult glycol supplier literature for
correct solution ratios.
The manufacturer assumes no responsibility for
undesirable system operation due to improper
design, equipment or component selection, and/or
installation of ductwork, grilles, and other eld supplied
components.
ELECTRICAL CONNECTIONS
ELECTRICAL SHOCK HAZARDS.
All power must be disconnected prior
to installation and servicing this equip-
ment. More than one source of power
may be present. Disconnect all power
sources to avoid electrocution or shock
injuries.
The electrical service to the unit should be compared to
the unit nameplate to verify compatibility. The routing
and sizing of all conduit, and the type and sizing of all
wiring and other electrical components such as circuit
breakers, disconnectswitches, etc.should be determined
by the individual job requirements and should not be
based on the size and/or type of connection provided
on the equipment. All installations should be made in
compliance with all governing codes and ordinances.
Compliance with all codes is the responsibility of the
installing contractor. The unit nameplate lists the unit
electrical characteristics such as the required supply
voltage, fan and heater amperage and required circuit
ampacities. The unit-wiring diagram shows all unit and
eld wiring. Since each project is different and each
unit on a project may be different, the installer must
be familiar with the wiring diagram and nameplate on
the unit BEFORE beginning any wiring. This unit is
not acceptable for installation in hazardous/explosive
areas.
CONTROL ENCLOSURE
The electrical control enclosure with hinged bottom
access and removable side access panel provides access
to the electricalcompartment.This compartment houses
all electric heat andcontrol components.Terminal strips
are furnished for simple power and control wiring
connections. Multiple knockouts allow wiring entries
from either side of the compartment.
All components furnished for eld installation, by either
the factory or the controls contractor should be located
and checked for proper function and compatibility. All
internal components should be checked for shipping
damage and all electrical connections should be
tightened to minimize problems during start-up.
Any devices such as fan switches or thermostats
that have been furnished from the factory for eld
installation must be wired in strict accordance with the
applicable wiring diagrams. Failureto do so couldresult
in personal injury or damage to components and will
void all manufacturers’ warranties. The fan motor(s)
should never becontrolled by any wiringor device other
than the factory furnished switch or thermostat/switch
combination, without factory authorization.
All eld wiring should be done in accordance with
governing codes and ordinances. Any modication of
the unit wiring without factory authorization will result
in voiding of all factory warranties and will nullify
any agency listings. The manufacturer assumes no
responsibility for any damages and/or injuries resulting
from improperly eld installed or wired components.
Control enclosure with hinged bottom access and
removable side access panel

ENVIRO-TEC
10
FORM ET115.24-NOM1 (0520)
AIR SYSTEM BALANCING
OPTIONAL TELESCOPING BOTTOM PANEL
The telescoping bottom panel allows for fully recessing
the unit while permitting service access into the ceiling
plenum. The architectural ceiling panel is nished with
a durable powder coat paint.
For typical installation instructions, dimensions, and
recommended ceiling cut-out dimensions, please refer
to pages 11-12 of this manual.
MODEL HP HORIZONTAL FAN COIL
Optional Telescoping Bottom Panel Assembly
Portions of the inlet louver not directly below unit inlet may require
covering in the eld on applications where inltration of ceiling ple-
num air into space is undesired.
Telescoping skirt and collar assembly must be eld adjusted to assure
a proper t between lter frame and louvered inlet panel assembly.
Refer to assembly submittal drawings for specic dimensions.
Optional Telescoping Bottom Panel Assembly

ENVIRO-TEC 11
FORM ET115.24-NOM1 (0520)
MODEL HP HORIZONTAL FAN COIL
Optional Telescoping Bottom Panel Assembly, Typical Installation Instructions
HP UNIT CHASSIS
SCREW THE TELESCOPING PANEL TO
THE CHASSIS, 2 SCREWS BOTH SIDES
AIR
OPEN THIS
PANEL FIRST
FINISHED
CEILING LINE
NOTE:
1. All dimensions are inches [millimeters]. All dimensions
±1/4" [6mm]. Metric values are soft conversion.
2. All drawings subject to change without prior notice.
3. Left hand unit shown, right hand unit opposite.
4. Mounting hardware not provided. Mounting holes are
located.
5. Remove solid and louvered bottom panels before mounting
frame assembly.
6. Frame assembly must be installed flat and square. Failure
to do so may result in poor bottom panel fit and improper
airflow pattern. Shim frame to support as required.
7. Telescoping skirt assembly must be field adjusted to
assure close fit to louvered bottom panel.
8. Portions of the inlet louver not directly below unit inlet
may require covering in the field on applications where
infiltration of ceiling plenum air into space is undesired.
TYPICAL INSTALLATION METHODS INLET COLLAR INSTALLATION
SUSPENDED GRID/TILE CEILING SYSTEM
CEILING GRID
"T" BAR
TELESCOPING BOTTOM
PANEL FRAME EXTRUSION
ACOUSTIC FIBRE
CEILING TILE
SOLID OR LOUVERED
BOTTOM PANEL
NOTE: CEILING "T" BAR GRID MAY NOT SUPPORT TELESCOPING
BOTTOM PANEL ASSEMBLY. BOTTOM PANEL ASSEMBLY
MAY REQUIRE INDEPENDENT SUPPORT.
METAL OR WOOD
CEILING STUD
SHIM AS
REQUIRED
TELESCOPING BOTTOM
PANEL FRAME EXTRUSION
SHT MTL OR WOOD
SCREW AS REQUIRED
SOLID OR LOUVERED
BOTTOM PANEL
SHT MTL OR WOOD
SCREW AS REQUIRED
SHIM AS
REQUIRED
DRYWALL
CEILING
STUD/DRYWALL CEILING SYSTEM
TABLE 1: TELESCOPING BOTTOM PANEL WEIGHTS (lbs./kg)
DESCRIPTION UNIT SIZE
02 03 04 06 08 09 10 12
Telescoping bottom panel 10 [5] 11 [5] 12 [5] 14 [6] 16 [7] 17 [8] 20 [9] 21 [10]

ENVIRO-TEC
12
FORM ET115.24-NOM1 (0520)
MODEL HPP & HPF
OPTIONAL TELESCOPING BOTTOM PANEL ASSEMBLY
35 7/8" 910
"B"
20 1/2" 521
13 5/8" 345
38" 965
"A"
3 1/4" 83
"C"
3 1/4" 83
16 3/4" 425
"D"
4" 102
16 1/4" 411
FIXED COLLAR
(ATTACH TO HPP
BOTTOM RETURN)
SLIP COLLAR
(ATTACH TO
FIXED COLLAR)
FILTER PANEL
FRAME
QUICK RELEASE LATCH
SOLID PANEL
38" 965
"A"
"B"
35 7/8" 910
16 7/8" 428
DOORS
SOLID PANEL DOORS
BOTH SIDES
38" 965
SEE NOTE 4
TYP
1 7/8"[47]
1 1/16" [27] TYP
35 7/8" 910
C
D
B
A
TYP
1 1/16"[27]
SOLID BOTTOM ACCESS PANEL
FOR USE WITH REAR
& FREE RETURN UNITS
TELESCOPING / FILTER
BOTTOM ACCESS PANEL
FOR USE WITH BOTTOM
& FREE RETURN UNITS
NOTES:
1. ALL DIMENSIONS ARE IN INCHES [mm] AND ARE +/- 1/8"
2. 1" TAW FILTER STANDARD, 1" OR 2" PLEATED FILTERS ARE OPTIONAL
3. BOTTOM PANELS ARE REMOVABLE
4. TOTAL TELESCOPING ADJUSTMENT IS 3 1/2" TO 6 1/2"
5. FILTER AND GRILLE SIZES ARE THE SAME FOR FOR EACH UNIT SIZE IN THE HP PRODUCT LINE
PAGE 1 OF 1
82-80008
01
9/10/15
DIMENSIONS ARE IN INCHES UNLESS
OTHERWISE NOTED
DRAWING NO
TITLE:
& SOLID BOTTOM ACCESS PANELS
REV
SHEET
DATE
ALL DRAWINGS ARE SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE
DO NOT SCALE DRAWING
SUBMITTAL DRAWING
MODEL HP TELESCOPING/ FILTER
DRAWING NO
TITLE:
REV
SHEET
DATE
ALL DRAWINGS ARE SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE
DO NOT SCALE DRAWING
SUBMITTAL DRAWING
DRAWING NO
TITLE:
REV
SHEET
DATE
ALL DRAWINGS ARE SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE
DO NOT SCALE DRAWING
SUBMITTAL DRAWING
PAGE 1 OF 1
DRAWING NO
TITLE:
REV
SHEET
DATE
ALL DRAWINGS ARE SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE
DO NOT SCALE DRAWING
SUBMITTAL DRAWING
THIS DRAWING CONTAINS PROPRIETARY DATA. UNAUTHORIZED DISCLOSURE,
REPRODUCTION, OR USE IS STRICTLY PROHIBITED WITHOUT WRITTEN PERMISSION.

ENVIRO-TEC 13
FORM ET115.24-NOM1 (0520)
MODEL HPP REAR RETURN
Service And Clearance Requirements
15-5/8"
397
28"
711
TOP VIEW
NOTES:
1. All chilled water piping that projects beyond the condensate pan or the optional auxiliary drip pan must be
field insulated by others.
2. Optional Auxiliary Drip Pan (not shown) is mounted on the outlet side of the drain pan.
3. Drain pan is installed with the outlet tube(s) on cooling coil connection end of coil on 4-pipe units with
optional opposite end connection.
4. Dimensions shown on this drawing apply to standard CW and HW valve packages. Refer to the Piping
Package Catalog for valve package code details. Contact factory for details on valve packages using
non-standard or customer furnished components.
5. Provide sufficient clearance to access electrical components and comply with all applicable codes and ordinances.
OPTIONAL
SIDE
ACCESS
15"
381
23 1/4"
591
7-1/4"
184
23-1/8"
587
16-3/4"
424
22"
559
1"
25
10-5/8"
269
13"
189
BACK VIEW
RH UNIT SHOWN
LH OPPOSITE
CONTROL ENCLOSURE
BOTTOM ACCESS DOOR
(OPEN POSITION)
(SEE NOTE 5)
SIDE ACCESS
AIR FILTER CLEARANCE
OPTIONAL
AUXILIARY
DRIP PAN
ELECTRIC HEAT
BOTTOM ACCESS
PAGE 1 OF 1
82-80043
A
10/07/19
DIMENSIONS ARE IN INCH [MM] FORMAT
+/- 1/8 [3] UNLESS OTHERWISE NOTED
DRAWING NO
TITLE:
REV
SHEET
DATE
ALL DRAWINGS ARE SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE
DO NOT SCALE DRAWING
SUBMITTAL DRAWING
MODEL HPP
EXTERNAL SPACE FEATURE REQUIREMENTS
THIS DRAWING CONTAINS PROPRIETARY DATA. UNAUTHORIZED DISCLOSURE,
REPRODUCTION, OR USE IS STRICTLY PROHIBITED WITHOUT WRITTEN PERMISSION.
UNCONTROLLED WHEN PRINTED
Drawings not for installation purposes. Refer to unit and size-specic
submittal drawings for installation.

ENVIRO-TEC
14
FORM ET115.24-NOM1 (0520)
MODEL HPP BOTTOM RETURN
Service And Clearance Requirements
Drawings not for installation purposes. Refer to unit and size-specic
submittal drawings for installation.
15-5/8"
397
28"
711
TOP VIEW
OPTIONAL
SIDE
ACCESS
15"
381
23 1/4"
591
7-1/4"
184
16-3/4"
424
23-1/8"
587
1"
25
10-5/8"
269
13"
189
BACK VIEW
RH UNIT SHOWN
LH OPPOSITE
CONTROL ENCLOSURE
BOTTOM ACCESS DOOR
(OPEN POSITION)
(SEE NOTE 5)
OPTIONAL
AUXILIARY
DRIP PAN
ELECTRIC HEAT
BOTTOM ACCESS
16"
406
BOTTOM VIEW
BOTTOM
FILTER
ACCESS
NOTES:
1. All chilled water piping that projects beyond the condensate pan or the optional auxiliary drip pan must be
field insulated by others.
2. Optional Auxiliary Drip Pan (not shown) is mounted on the outlet side of the drain pan.
3. Drain pan is installed with the outlet tube(s) on cooling coil connection end of coil on 4-pipe units with
optional opposite end connection.
4. Dimensions shown on this drawing apply to standard CW and HW valve packages. Refer to the Piping
Package Catalog for valve package code details. Contact factory for details on valve packages using
non-standard or customer furnished components.
5. Provide sufficient clearance to access electrical components and comply with all applicable codes and ordinances.
PAGE 1 OF 1
82-80056
A
10/23/19
DIMENSIONS ARE IN INCH [MM] FORMAT
+/- 1/8 [3] UNLESS OTHERWISE NOTED
DRAWING NO
TITLE:
REV
SHEET
DATE
ALL DRAWINGS ARE SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE
DO NOT SCALE DRAWING
SUBMITTAL DRAWING
MODEL HPP BOTTOM RETURN
EXTERNAL SPACE FEATURE REQUIREMENTS
THIS DRAWING CONTAINS PROPRIETARY DATA. UNAUTHORIZED DISCLOSURE,
REPRODUCTION, OR USE IS STRICTLY PROHIBITED WITHOUT WRITTEN PERMISSION.

ENVIRO-TEC 15
FORM ET115.24-NOM1 (0520)
MODEL HPP WITH MIXING BOX
Service And Clearance Requirements
15-5/8"
397
28"
711
TOP VIEW
NOTES:
1. All chilled water piping that projects beyond the condensate pan or the optional auxiliary drip pan must be
field insulated by others.
2. Optional Auxiliary Drip Pan (not shown) is mounted on the outlet side of the drain pan.
3. Drain pan is installed with the outlet tube(s) on cooling coil connection end of coil on 4-pipe units with
optional opposite end connection.
4. Dimensions shown on this drawing apply to standard CW and HW valve packages. Refer to the Piping
Package Catalog for valve package code details. Contact factory for details on valve packages using
non-standard or customer furnished components.
5. Provide sufficient clearance to access electrical components and comply with all applicable codes and ordinances.
15"
381
23 1/4"
591
7-1/4"
184
23-1/8"
587
16-3/4"
426
1"
28
10-5/8"
269
16"
[406]
BACK VIEW
RH UNIT SHOWN
LH OPPOSITE
CONTROL ENCLOSURE
BOTTOM ACCESS DOOR
(OPEN POSITION)
(SEE NOTE 5)
OPTIONAL
AUXILIARY
DRIP PAN
FILTER (TOP OR BOTTOM)
OPTIONAL ELECTRIC HEAT
BOTTOM ACCESS
PAGE 1 OF 1
82-80046
A
10/07/19
DIMENSIONS ARE IN INCH [MM] FORMAT
+/- 1/8 [3] UNLESS OTHERWISE NOTED
DRAWING NO
TITLE:
REV
SHEET
DATE
ALL DRAWINGS ARE SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE
DO NOT SCALE DRAWING
SUBMITTAL DRAWING
MODEL HPP W / MIXING BOX
EXTERNAL FEATURE SPACE REQUIREMENTS
THIS DRAWING CONTAINS PROPRIETARY DATA. UNAUTHORIZED DISCLOSURE,
REPRODUCTION, OR USE IS STRICTLY PROHIBITED WITHOUT WRITTEN PERMISSION.
UNCONTROLLED WHEN PRINTED
Drawings not for installation purposes. Refer to unit and size-specic
submittal drawings for installation.

ENVIRO-TEC
16
FORM ET115.24-NOM1 (0520)
MODEL HPE
Service And Clearance Requirements
3"
76
3"
76
TOP VIEW
REMOVABLE
SIDE ACCESS PANEL
(BOTH SIDES)
33-1/8"
842
31-3/4"
805
SIDE VIEW
REMOVABLE
BOTTOM-HINGED DOORS
(OPEN POSITION)
ELECTRIC
HEAT
(OPTIONAL)
NOTES:
1. All chilled water piping that projects beyond the condensate pan or the optional auxiliary drip pan must be
field insulated by others.
2. Optional Auxiliary Drip Pan (not shown) is mounted on the outlet side of the drain pan.
3. Drain Pan is installed with the outlet tube(s) on cooling coil connection end of coil on 4-pipe units with
optional opposite end connection.
4. Dimensions shown on this drawing apply to standard CW and HW valve packages. Refer to the Piping
Package Catalog for valve package code details. Contact factory for details on valve packages using
non-standard or customer furnished components.
5. Provide sufficient clearance to access electrical components and comply with all applicable codes and ordinances.
PAGE 1 OF 1
82-80044
A
10/08/19
DIMENSIONS ARE IN INCH [MM] FORMAT
+/- 1/8 [3] UNLESS OTHERWISE NOTED
DRAWING NO
TITLE:
REV
SHEET
DATE
ALL DRAWINGS ARE SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE
DO NOT SCALE DRAWING
SUBMITTAL DRAWING
THIS DRAWING CONTAINS PROPRIETARY DATA. UNAUTHORIZED DISCLOSURE,
REPRODUCTION, OR USE IS STRICTLY PROHIBITED WITHOUT WRITTEN PERMISSION.
UNCONTROLLED WHEN PRINTED
MODEL HPE
EXTERNAL FEATURE SPACE REQUIREMENTS
Drawings not for installation purposes. Refer to unit and size-specic
submittal drawings for installation.

ENVIRO-TEC 17
FORM ET115.24-NOM1 (0520)
MODEL HPF
Service And Clearance Requirements
15-5/8"
397
28"
711
TOP VIEW
NOTES:
1. All chilled water piping that projects beyond the condensate pan or the optional auxiliary drip pan must be
field insulated by others.
2. Optional Auxiliary Drip Pan (not shown) is mounted on the outlet side of the drain pan.
3. Drain pan is installed with the outlet tube(s) on cooling coil connection end of coil on 4-pipe units with
optional opposite end connection.
4. Dimensions shown on this drawing apply to standard CW and HW valve packages. Refer to the Piping
Package Catalog for valve package code details. Contact factory for details on valve packages using
non-standard or customer furnished components.
5. Provide sufficient clearance to access electrical components and comply with all applicable codes and ordinances.
15"
381
21-1/2"
545
7-1/4"
184
1"
25
10-5/8"
270
BACK VIEW
RH UNIT SHOWN
LH OPPOSITE
CONTROL ENCLOSURE
BOTTOM ACCESS DOOR
(OPEN POSITION)
(SEE NOTE 5)
OPTIONAL
VALVE
PACKAGES
AND
AUXILIARY
DRIP PAN
OPTIONAL
SIDE
ACCESS
PAGE 1 OF 1
82-80045
A
10/07/19
DIMENSIONS ARE IN INCH [MM] FORMAT
+/- 1/8 [3] UNLESS OTHERWISE NOTED
DRAWING NO
TITLE:
REV
SHEET
DATE
ALL DRAWINGS ARE SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE
DO NOT SCALE DRAWING
SUBMITTAL DRAWING
MODEL HPF
EXTERNAL FEATURE SPACE REQUIREMENTS
THIS DRAWING CONTAINS PROPRIETARY DATA. UNAUTHORIZED DISCLOSURE,
REPRODUCTION, OR USE IS STRICTLY PROHIBITED WITHOUT WRITTEN PERMISSION.
UNCONTROLLED WHEN PRINTED
Drawings not for installation purposes. Refer to unit and size-specic
submittal drawings for installation.

ENVIRO-TEC
18
FORM ET115.24-NOM1 (0520)
GENERAL
Before beginning any start-up operation, the start-
up personnel should familiarize themselves with the
unit, options and accessories, and control sequence to
understand the proper system operation.
All personnel should have a good working knowledge
of general start-up procedures and have the appropriate
start-upand balancingguides availablefor consultation.
The initial step in any startup operation should be a nal
visual inspection. All equipment, plenums, duct-work,
and piping should be inspected to verify that all systems
are complete and properly installed and mounted, and
that no debris or foreign articles such as paper or drink
cans are left in the units or other areas.
Each unit should be checkedfor loose wires,free blower
wheel operation, and loose or missing access panels or
doors.
Except as required during start-up and balancing
operations, no fan coil units should be operated without
all the proper ductwork attached, supply and return
grilles in place, and all access doors and panels in place
and secure.
A clean lter of the proper size and type must also be
installed. Failure to do so could result in damage to the
equipment or building and furnishings, and/or void all
manufacturers’warranties.
Fan coils are not intended for temporary heat/cool or
ventilation. Units are not designed or equipped to
operate in dusty construction environments.
Operation of the units in conditions outlined above
could result in damage to the equipment or building and
furnishings and/or void all manufacturer’s warranties.
COOLING/HEATING SYSTEM
Prior to the water system start-up and balancing, the
chilled/hot water systems should be ushed to clean out
dirt and debris, which may have collected in the piping
during construction.
During this procedure, all unit service valves must be in
the closed position. This prevents foreign matter from
entering the unit and clogging the valves and metering
devices.
Strainers should be installed in the piping mains to
prevent this material from entering the units during
normal operation.
During system filling, air venting from the unit is
accomplished by the use of the standard manual or
optional automatic, air vent tting installed on the coil.
In the case of the manual air vent tting, the screw
should be turned counterclockwise no more than 1-½
turns to operate the air vent.
Automatic air vents may be unscrewed one turn
counterclockwise to speed initial venting but should
be screwed in for automatic venting after start-up
operations. Check to ensure that no leaks are prevalent
at the coils, coil connections, piping packages, etc.
The air vent provided on the unit is not intended to replace the main system air vents and may
not release air trapped in other parts of the system. Inspect the entire system for potential air
traps and vent those areas as required, independently. In addition, some systems may require
repeated venting over a period of time to properly eliminate air from the system.
SECTION TWO -START-UP

ENVIRO-TEC 19
FORM ET115.24-NOM1 (0520)
All ductwork must be complete and connected, and all
grilles, lters, access doors and panels must be properly
installed to establish actual system operating conditions
BEFORE beginning air balancing operations.
Each individual unit and attached ductwork is a unique
system with its own operating characteristics. For this
reason, air balancing is normally done by balance
specialists who are familiarwith all procedures required
to properly establish air distribution and fan system
operating conditions. These procedures should not be
attempted by unqualied personnel.
After the proper system operation is established, the
actual unit air delivery and the actual fan motor
amperage draw for each unit should be recorded in
a convenient place for future reference such as the
inspection, installation, & start-up check sheet, a copy
of which is provided within this manual. Contact the
Sales Representative or the factoryfor additional copies
of this sheet.
WATER SYSTEM BALANCING
A complete knowledge of the hydronic system, its
components, and controls is essential to proper water
system balancing and this procedure should not be
attempted by unqualied personnel. The system must
be complete and all components must be in operating
condition BEFORE beginning water system balancing
operations.
Each hydronic system has different operating
characteristics depending on the devices and controls
in the system. The actual balancing technique may vary
from one system to another.
After the proper system operation is established, the
appropriate system operating conditionssuch as various
water temperatures and ow rates should be recorded
in a convenient place for future reference.
Before and during water system balancing, conditions
may exist which can result in noticeable water
noise or undesired valve operation due to incorrect
system pressures. After the entire system is balanced,
these conditions will not exist on properly designed
systems.
CONTROLS OPERATION
Before proper control operation can be veried all other
systems must be in proper operation. The correct water
and air temperatures must be present for the control
function being tested. Some controls and features are
designed to not operate under certain conditions or
beyond designed range.
A wide range of controls and electrical options and
accessories may be used with the equipment covered
in this manual. Consult the approved unit submittals,
order acknowledgement, and other manuals for detailed
information regarding each individual unit and its
controls. Since controls and features may vary from
one unit to another, care should be taken to identify
the controls to be used on each unit and their proper
control sequence. Information provided by component
manufacturers regarding installation, operation, and
maintenance of their individual controls is available
upon request.
PHYSICAL DATA
Each unit on a job will have its own unique operating
environment and conditions that may dictate a
maintenance schedule for that unit that is different
from other equipment on the job.A formal schedule of
regular maintenance andan individual unit logshould be
established and maintained.This will help toachieve the
maximum performance and service life of each unit on
the job. See Appendix for a list of available installation,
operation and maintenance manuals.
Information regarding safety precau-
tions contained in the preface at the
beginning of this manual should be
followed during any service and main-
tenance operations.
For more detailed information concerning service
operations, consult your Sales Representative or the
Factory.
MOTOR/BLOWER ASSEMBLY
The type of fan operation is determined by the control
components and their method of wiring, and may vary
from unit to unit. Refer to the wiring diagram for each
unit for that unit’s individual operating characteristics.
Motors are permanently lubricated, PSC or ECM type
and do not require eld lubrication.

ENVIRO-TEC
20
FORM ET115.24-NOM1 (0520)
Motor & Fan Data
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 airow.
PSC
PSC ECM ECM3 FLA FLA
3-Phase
Neutral
Current
FLA
3-Phase
Neutral
Current
High (1) 1/6 2.6
Medium (1) 1/8 2.1
Low (1) 1/10 1.8
High (1) 1/4 4.4
Medium (1) 1/6 3.6
Low (1) 1/8 3.0
High (1) 1/4 4.9
Medium (1) 1/5 4.1
Low (1) 1/6 3.2
High (2) 1/6 5.2
Medium (2) 1/8 4.2
Low (2) 1/10 3.6
High (2) 1/4 8.8
Medium (2) 1/6 7.2
Low (2) 1/8 6.0
High (2) 1/4 9.8
Medium (2) 1/5 8.2
Low (2) 1/6 6.4
High (2) 1/4 9.8
Medium (2) 1/5 8.2
Low (2) 1/6 6.4
High (2) 1/4 9.8
Medium (2) 1/5 8.2
Low (2) 1/6 6.4
PSC
PSC ECM ECM3 FLA FLA
3-Phase
Neutral
Current
FLA
3-Phase
Neutral
Current
High (1) 1/6 1.0
Medium (1) 1/8 0.9
Low (1) 1/10 0.6
High (1) 1/4 1.6
Medium (1) 1/6 1.0
Low (1) 1/8 0.8
High (1) 1/4 2.0
Medium (1) 1/5 1.4
Low (1) 1/6 1.2
High (2) 1/6 2.0
Medium (2) 1/8 1.8
Low (2) 1/10 1.2
High (2) 1/4 3.2
Medium (2) 1/6 2.0
Low (2) 1/8 1.6
High (2) 1/4 4.0
Medium (2) 1/5 2.8
Low (2) 1/6 2.4
High (2) 1/4 4.0
Medium (2) 1/5 2.8
Low (2) 1/6 2.4
High (2) 1/4 4.0
Medium (2) 1/5 2.8
Low (2) 1/6 2.4
PSC
PSC ECM ECM3 FLA FLA
3-Phase
Neutral
Current
FLA
3-Phase
Neutral
Current
High (1) 1/6 0.9
Medium (1) 1/8 0.8
Low (1) 1/10 0.7
High (1) 1/4 1.3
Medium (1) 1/6 0.8
Low (1) 1/8 0.6
High (1) 1/4 1.9
Medium (1) 1/5 1.6
Low (1) 1/6 1.3
High (2) 1/6 1.8
Medium (2) 1/8 1.6
Low (2) 1/10 1.4
High (2) 1/4 2.6
Medium (2) 1/6 1.6
Low (2) 1/8 1.2
High (2) 1/4 3.8
Medium (2) 1/5 3.2
Low (2) 1/6 2.6
High (2) 1/4 3.8
Medium (2) 1/5 3.2
Low (2) 1/6 2.6
High (2) 1/4 3.8
Medium (2) 1/5 3.2
Low (2) 1/6 2.6
UNIT SIZE FAN SPEED # OF
FANS
8.7
4.8
ECM
MOTOR HP
(Quantity)
ECM 3-SPD
Amps @ 208V-230V/1/60
Amps @ 277V/1/60
4.8
2.8
(1) 1/3(1) 1/306 1 5 8.3
Amps @ 120V/1/60
ECM 3-SPD
ECM
ECM 3-SPD
ECM
4.8(1) 1/3(1) 1/3
12 27.7 16.6
2.8
13.3 9.6
(1) 1/3
(2) 1/3
(1) 1/3
(1) 1/2
10 1 5 8.3
08 1 5 8.3
2.8 4.8
8.7
2.6 4.5
4.8
7.4
7.1
5.6
5.2
2.6
8.7
4.8
4.5
4.8
2.8
4.1
2.6
4.8
2.6
4.8
2.6
2.6
4.54.5
4.5 4.5
16 210 16.6
5.6
14 210 16.617.3
17.3
9.6
9.6
(2) 1/3
(2) 1/3
(2) 1/3
(2) 1/3
4.3 9.7
2.82.8
20 215.4 16.6
5.6
18 210 16.617.3
26.7
9.6
9.6
(2) 1/3
(2) 1/2
(2) 1/3
(2) 1/2
5.6 9.7
9.79.7
9.7
5.6
5.6
8.2 9.0
8.6 9.7
5.2 9.0
9.79.7
14.9
9.0
14.2
5.6
5.6
5.2
5.2
5.2 9.0
5.2 9.09.0
9.0
5.2
5.2
9.0
UNIT SIZE FAN SPEED
MOTOR HP
(Quantity)
# OF
FANS
06 (1) 1/3 (1) 1/3 1
08 (1) 1/3 (1) 1/3 1
10 (1) 1/3 (1) 1/3 1
12 (1) 1/2 (2) 1/3 2
14 (2) 1/3 (2) 1/3 2
16 (2) 1/3 (2) 1/3 2
18 (2) 1/3 (2) 1/3 2
20 (2) 1/2 (2) 1/2 2
UNIT SIZE FAN SPEED
MOTOR HP
(Quantity)
# OF
FANS
06 (1) 1/3 (1) 1/3 1
08 (1) 1/3 (1) 1/3 1
10 (1) 1/3 (1) 1/3 1
12 (1) 1/2 (2) 1/3 2
14 (2) 1/3 (2) 1/3 2
16 (2) 1/3 (2) 1/3 2
18 (2) 1/3 (2) 1/3 2
20 (2) 1/2 (2) 1/2 2