Enviro HPF 06, HPF 08, HPF 10, HPF 12, HPF 14 Installation, Operation & Maintenance Instructions Manual
...
HP SERIES FAN COILS
INSTALLATION, OPERATION & MAINTENANCE
(HPP Plenum Return Shown)
Supersedes ET115.24-NOM1 (615)
HP SERIES
Form ET115.24-NOM1 (519)
INTRODUCTION
E
NVIRO-TEC fan coils represent a prudent
investment which can, with proper installation,
operation, and regular maintenance, give troublefree 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, regular
periodic maintenance, and everyday operation of the
equipment be followed in detail.
This manual s
of any actual work being done on the equipment.
Should any questions arise, please contact your
local Sales Representative or the factory 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.
hould be fully reviewed in advance
FORM ET115.24-NOM1 (519)
SAFETY SYMBOLS
The following symbols are used in this document to alert the reader to areas of potential hazard:
DANGER indicates an imminently
hazardous situation which, if not
avoided, will result in death or serious
injury.
WARNING indicates a potentially
hazardous situation which, if not
avoided, could result in death or serious injury.
SAFETY PRECAUTIONS
The equipment covered by this manual is designed for
safe and reliable operation when installed and operated
within its design specication limits. To avoid personal
injury or damage to equipment or property while
installing or operating this equipment, it is essential
that qualied, 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 serving this equipment. More than one source of power
may be present. Disconnect all power
sources to avoid electrocution or shock
injuries.
MOVING PARTS HAZARDS. Motor 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.
CAUTION identies 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.
Check that the unit assembly and component 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 until 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 loosening or breaking away due to system
operation and vibration.
HOT PARTS HAZARD. Electric Resistance heating elements must be disconnected prior to servicing. Electric
Heaters may start automatically, disconnect all power and control circuits
prior to servicing to avoid burns.
2
Protect adjacent ammable materials
when brazing. Use ame and heat protection barriers where needed. Have
re extinguisher available and ready
for immediate use.
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
TABLE OF CONTENTS
INTRODUCTION .................................................................................................................................................1
SAFETy SyMbOLS & PRECAUTIONS ..............................................................................................................2
CODE COMPLIANCE ..........................................................................................................................................4
RECEIPT AND INITIAL INSTALLATION .............................................................................................................4
UNPACKING & INSPECTION .............................................................................................................................4
HANDLING & INSTALLATION ............................................................................................................................5
DRAIN PANS .......................................................................................................................................................5
RETURN AIR LOCATION ....................................................................................................................................6
FAN REMOVAL ....................................................................................................................................................6
PLENUM bOX SERVICE PANEL ........................................................................................................................6
PLENUM bOX REMOVAL ...................................................................................................................................7
COIL HANDING ...................................................................................................................................................7
COILS ...................................................................................................................................................................7
PIPING CONNECTIONS ......................................................................................................................................7
DUCTWORK CONNECTIONS .............................................................................................................................8
ELECTRICAL CONNECTIONS ...........................................................................................................................8
CONTROL ENCLOSURE ....................................................................................................................................8
TELESCOPING bOTTOM PANEL ......................................................................................................................9
START-UP ............................................................................................................................................................9
COOLING/HEATING SySTEM ............................................................................................................................9
MOTOR & FAN DATA ........................................................................................................................................10
AHRI STANDARD RATINGS .............................................................................................................................10
INSPECTION & START-UP CHECKLIST .......................................................................................................... 11
AIR SySTEM bALANCING ...............................................................................................................................12
WATER SySTEM bALANCING ........................................................................................................................12
CONTROLS OPERATION .................................................................................................................................12
PHySICAL DATA ...............................................................................................................................................12
MOTOR/bLOWER ASSEMbLy .........................................................................................................................12
FAN ASSEMbLy ................................................................................................................................................13
COIL ...................................................................................................................................................................13
UNIT WEIGHT DATA .........................................................................................................................................14
ELECTRIC RESISTANCE HEATER ASSEMbLy ..............................................................................................14
ELECTRICAL WIRING & CONTROLS ..............................................................................................................14
ELECTRIC HEAT SELECTION CHART (AMPS) ..............................................................................................15
FACE AREA, FREE AREA AND FILTER SIZES ...............................................................................................16
VALVES & PIPING .............................................................................................................................................16
DRAIN ................................................................................................................................................................16
FILTERS ............................................................................................................................................................16
FILTER REPLACEMENT ...................................................................................................................................16
REPLACEMENT PARTS ...................................................................................................................................17
HP SERIES COIL CONNECTION SIZES ..........................................................................................................18
ECM VARIAbLE SPEED
MOTOR bALANCING INSTRUCTIONS .....................................................................................................19
FAN CALIbRATION WITH ECM MOTOR ...................................................................................................20
TROUbLE SHOOTING GUIDELINES ........................................................................................................21
CHECKING ECM CAbLES .........................................................................................................................22
ECM 3-SPEED (CONSTANT TORQUE)
TROUbLESHOOTING GUIDELINES .........................................................................................................23
CHECKING ECM CAbLES .........................................................................................................................24
TROUbLESHOOTING GUIDE FOR FAN COIL RELAy bOARD .....................................................................26
EXAMPLE WIRING DIAGRAMS .......................................................................................................................29
INSTRUCTIONS FOR REMOTE THERMOSTAT OR REMOTE 3-SPEED SWITCH ........................................32
APPENDIX .........................................................................................................................................................33
ENVIRO-TEC
3
FORM ET115.24-NOM1 (519)
CODE COMPLIANCE
This equipment has been manufactured and certied in
accordance with UL 1995-Standard for Safety, Heating
and Cooling Equipment (CAN/CSA C22.2 NO 236M90) and bears the Electrical Testing Laboratories
(ETL) Mark under ETL File No: 3036742-002.
RECEIPT AND 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 drilling, cutting, or working with chemicals such as
refrigerants or lubricants.
• Never pressurize any equipment beyond specied
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 manufacturer assumes no responsibility for personal
injury or property damage resulting from improper
or unsafe practices during the handling, installation,
service, or operation of any equipment.
UNPACKING & INSPECTION
All units are carefully inspected at the factory throughout
the manufacturing process under a strict detailed quality
assurance program, and where possible, all major
components and subassemblies are carefully tested for
proper operation and veried 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 factoryshipping 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 notied 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 Return Authorization Number will be
issued. Unauthorized return shipments of equipment
and shipments not marked with an authorization number
will be refused. In addition, the manufacturer will not
accept any claims for unauthorized expenses.
4
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
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 units and/or job conditions may require some form
of temporary covering during construction.
FOR SEISMIC CERTIFIED
INSTALLATION, REFERENCE
ENVIRO-TEC SEISMIC
INSTALLATION DOCUMENT.
DRAIN PAN
The optional 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 easily removable for cleaning. The pan
can be turned around 180 degrees for drainage on the
opposite side of the valve package(s) while capturing
condensate from both the coil and the valve package(s).
The optional auxiliary drip pan to catch condensed
moisture from valves and piping is easily attachable to
the drain pan. The drain pan is equipped with external
slots and is to be sloped toward the outlet connection
prior to start-up. Care must be taken to insure that the
unit drain pan does not slope away from the outlet
connection.
AUXILIARY DRAIN PANS
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 or inadequate 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 LEVEL plane. All units are supplied with hanging
holes for use with all thread rods.
ENVIRO-TEC
The auxiliary drain 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.
5
FORM ET115.24-NOM1 (519)
All water coils must be protected from
“H” MUST BE AT LEAST
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.
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 notied BEFORE any repairs are attempted.
All leaks should be repaired before proceeding with
the installation.
After system integrity has been established the piping
should be insulated in accordance with the project
specications. 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.
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.
Bottom Return
The drain should always be connected and piped to an
acceptable disposal point. For proper moisture carryoff, 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.
Condensate Trap
1 INCH PLUS CASING
STATIC PRESSURE
X
H
“X” MUST BE AT
LEAST 1 INCH
Trap detail for positive cabinet
static pressure
Rear Return
FAN REMOVAL
This fan assembly is easily removable by unscrewing
the (4) ¼-20 nuts from the fan deck and sliding the
fan assembly off of the weld studs. Disconnect motor
wiring. Reassemble fans and torque nuts to 30 in/lbs.
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.
6
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
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
removing the screws attaching the plenum box to the
sides, top and rear of the coil casing.
COIL HANDING
This unit features a eld reversible coil assembly should
the need arise upon installation to change the handing of
the coil. To change the coil handing, remove the plenum
box (if applicable) from the coil by removing all screws
to the coil casing. Next, remove the fan(s), fan deck,
and top and bottom casings from the coil. Rotate the
coil. Replace the bottom coil casing in the top coil casing
position and the top coil casing in the bottom coil casing
position and reattach the fan deck, fan(s) and plenum
box (if applicable) in the original locations.
The leaving air side of the n pack
will remain the same after changing
the coil handing.
COILS
All fan coils are available in 2 or 4 pipe congurations.
Heating and cooling coils are eld reversible for right
or left side connections. On units with water coils, the
maximum water pressure applied to the unit should
never exceed 300 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 consideration must be given to system
cleanliness when connecting to solar,
domestic or potable water systems.
Submittals and Product Catalogs detailing unit operation,
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 a high temperature which may damage 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 such as BCup-
2. 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”) during tightening 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 drain pan or other device. Valves and
TXV’s should be secured or supported to avoid damage
to coil headers or distributor tubes.
ENVIRO-TEC
7
FORM ET115.24-NOM1 (519)
DUCTWORK CONNECTIONS
All ductwork and/or supply and return grilles should
be installed in accordance with the project plans and
specications. If not included on the unit or furnished
from the factory, ENVIRO-TEC supply and return
grilles are available in a variety of types.
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 approved submittals 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.
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 optional electrical control enclosure provides access
to the electrical compartment. This compartment houses
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.
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. Failure to do so could result
in personal injury or damage to components and will
void all manufacturers’ warranties.
ELECTRICAL CONNECTIONS
ELECTRICAL SHOCK HAZARDS.
All power must be disconnected prior
to installation and serving 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, disconnect switches, 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
The fan motor(s) should never be controlled by any
wiring or 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 modication 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.
8
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
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.
Portions of the inlet louver not directly
below unit inlet may require covering in the eld on applications where
inltration of ceiling plenum 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 specic dimensions.
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 checked for 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.
START-UP
Before beginning any start-up operation, the startup 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-up
and balancing guides available for consultation.
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.
ENVIRO-TEC
9
FORM ET115.24-NOM1 (519)
The air vent provided on the unit is not intended to replace the main system air vents and may
POWER
QT QS WPD INPUT
FNF / FNP 06
•410 700 17800 14000 3.71.6 290
FNF / FNP 08
•410 900 23500 18500 4.91.9 410
FNF / FNP 10
•410 110029400 22900 6.02.2 470
FNF / FNP 12
•410 140043000 31800 8.74.2 560
FNF / FNP 14
410 175047 100 36250 9.63.0 715
FNF / FNP 16
410 200051 000 41000 10.52.0 830
FNF / FNP 18
410 220053 000 42000 11.02.2 850
FNF / FNP 20
410 230056 000 44000 11.42.5 870
WATER
Flow Rate
GPM
COOLING CAPACITY
AIRFLOW
COIL
PSC ECM
FLA
3-Phase N eutral
Current
FLA
3-Phase N eutral
Current
FLA
3-Phase N eutral
Current
FLA
3-Phase N eutral
Current
FLA
3-Phase N eutral
Current
FLA
3-Phase N eutral
Current
High (1) 1/6 2.6 1.1 0.9
Medium (1) 1/ 8 2.1 0.9 0.8
Low (1) 1/10 1.8 0.6 0.7
High (1) 1/4 3.8 1.6 1.3
Medium (1) 1/ 6 3.3 1.0 0.8
Low (1) 1/ 8 2.6 0.8 0.7
High (1) 1/4 4.9 2.2 1.9
Meduim (1) 1/ 5 4.1 1.5 1.2
Low (1) 1/ 6 3.2 1.1 0.8
High (2) 1/6 5.2 2.2 1.8
Medium (2) 1/ 8 4.2 1.8 1.6
Low (2) 1/10 3.6 1.2 1.4
High (2) 1/4 7.6 3.2 2.6
Medium (2) 1/ 6 6.6 2.0 1.6
Low (2) 1/ 8 5.2 1.6 1.4
High (2) 1/4 9.8 4.4 3.8
Medium (2) 1/ 5 8.2 3.0 2.4
Low (2) 1/ 6 6.4 2.2 1.6
High (2) 1/4 9.8 4.4 3.8
Medium (2) 1/ 5 8.2 3.0 2.4
Low (2) 1/ 6 6.4 2.2 1.6
High (2) 1/4 9.8 4.4 3.8
Medium (2) 1/ 5 8.2 3.0
2.4
Low (2) 1/ 6 6.4 2.2 1.6
UNIT
SIZE
FAN
SPEED
MOTOR HP
(Quantit y)
# OF
FANS
AMPs @ 120/ 1/60
AMPs @ 208- 230/1/ 60
AMPs @ 277/ 1/60
PSC
ECM
ECM 3- Speed
PSC
ECM
ECM 3- Speed
PSC
ECM
ECM 3- Speed
4.5
2.6
4.5
08
(1) 1/ 315.0
8.7
4.8
8.3
8.3
2.8
4.8
2.8
4.8
2.606(1) 1/ 315.0
8.7
4.8
2.6
4.5
10
(1) 1/ 315.0
8.7
4.8
8.3
2.8
2.8
4.8
2.8
4.8
2.6
4.5
5.6
9.7
5.2
9.0
5.2
9.0
4.5
12
(2) 1/ 3210.0
17.3
9.6
16.6
5.6
9.7
4.8
2.8
4.8
2.6
4.5
2.6
9.0
5.2
9.0
16
(2) 1/ 3210.0
17.3
9.6
16.6
16.6
5.6
9.7
5.6
9.7
5.214(2) 1/ 3210.0
17.3
9.6
5.2
9.0
18
(2) 1/ 3210.0
17.3
9.6
16.6
5.6
5.6
9.7
5.6
9.7
5.2
9.0
5.6
9.7
5.2
9.0
5.2
9.0
9.0
20
(2) 1/ 3210.0
17.3
9.6
16.6
5.6
9.7
9.7
5.6
9.7
5.2
9.0
5.2
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
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 airow.
AHRI Standard Ratings
MODEL /
SIZE
HPF/HPP
HPF/HPP
HPF/HPP
HPF/HPP
HPF/HPP
HPF/HPP
HPF/HPP
HPF/HPP
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. Airow under dry coil conditions. All models tested at 0.05” external static pressure.
2. Airow rate CFM on sizes 14 through 20 exceed maximum ratings in AHRI 440 and are therefore not certied.
AHRI 440
CERTIFIED
Rows FPI
CFM
(Dry Flow)
(BTUH) (BTUH) ft-wg (WA TTS )
10
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
Receiving & Inspection
INSPECTION & START-UP CHECKLIST
□ Unit Received Undamaged
□ Unit Arrangement/Hand Correct
Handling & Installation
□ Unit Mounted Level and Square
□ Proper Electrical Service Provided
□ Proper Service Switch/Disconnect Provided
□ Proper Access Provided For Unit and
Accessories
□ Proper Overcurrent Protection Provided
□ Proper Chilled Water Line Size to Unit
□ Proper Refrigerant Line Sizes to Unit
Cooling/Heating Connections
□ Protect Valve Package Components From Heat
□ Connect Field Piping to Unit
□ Install Drain Line and Traps as Required
□ Install Condensate Pan Under Piping as
Required
Ductwork Connections
□ Install Ductwork, Fittings and Grilles as
Required
□ Unit Received Complete as Ordered
□ Unit Structural Support Complete and Correct
□ Proper Steam Condensate Trap on Return Line
□ All Services to Unit in Code Compliance
□ Proper Hot Water Line to Unit
□ Proper Steam Line Sizes to Unit
□
Proper Steam Supply Pressure to Unit (15psi
max)
□ All Shipping Screws and Braces Removed
□ Mount Valve Packages
□ Pressure Test All Piping for Leaks
□ Insulate All Piping as Required
□ Connect Supply and Return Pipe to Correct
onnections.
Coil C
□
Proper Supply and Return Grille Type and Size
Used
□ Insulate All Ductwork as Required
□ Control Outside Air for Freeze Protection
Electrical Connections
□ Refer To Unit Wiring Diagram
□ All Field Wiring In Code Compliance
Unit Startup
□ General Visual Unit and System
Inspection
□ Record Ambient Temperature
□ Close All Unit Isolation Valves
□ Fill Systems With Water/Refrigerant
□ All Ductwork and Grilles In Place
□ Start Fans, Etc.
□ Check All Ductwork and Units For Air
Leaks
□ Record All Final Settings For Future Use
□ Check All Dampers For Proper Operation
□ Connect Incoming Power Service or Services
□ SCR Fan Speed Control Wired to High Speed
□ Verify Proper Heating Operation
□ Record Electrical Supply Voltage
□ Check All Wiring For Secure Connections
□ Flush Water Systems
ent Water Systems as Required
□ V
□ All Unit Panels and Filters In Place
□ Check For Overload Condition of All Units
□ Balance Air Systems as Required
□ Check Piping and Ductwork For Vibration
□ Verify Proper Cooling Operation
□ Reinstall All Covers and Access Panels
ENVIRO-TEC
11
FORM ET115.24-NOM1 (519)
AIR SYSTEM BALANCING
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 familiar with all procedures required
to properly establish air distribution and fan system
operating conditions. These procedures should not be
attempted by unqualied 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 on the back of this manual. Contact
the Sales Representative or the factory for 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 unqualied personnel. The system must
be complete and all components must be in operating
condition BEFORE beginning water system balancing
operations.
CONTROLS OPERATION
Before proper control operation can be veried 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 and an individual unit log should be
established and maintained. This will help to achieve the
maximum performance and service life of each unit on
the job. See Appendix for a list of available installation,
operation and maintenance manuals.
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 conditions such 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.
Information regarding safety precautions contained in the preface at the
beginning of this manual should be
followed during any service and maintenance 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.
12
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
FAN ASSEMBLY
Each fan assembly is easily removed from the unit at
four ¼” weld studs in the fan deck. In most applications
the fan assembly can be removed without disconnecting
the ductwork for service access to motors and blowers
at, or away from the unit.
Should the assembly require more extensive service,
the motor/blower assembly may be removed from the
unit to facilitate such operations as motor or blower
wheel/housing replacement, etc. Dirt and dust should
not be allowed to accumulate on the blower wheel or
housing. This can result in an unbalanced blower wheel
condition that can damage a blower wheel or motor.
The wheel and housing may be cleaned periodically
using a vacuum cleaner and a brush taking care not to
dislodge the factory balancing weights on the blower
wheel blades.
To remove the motor from the fan, disconnect the motor
wire leads, loosen the set screw on the motor shaft and
remove the (3) cap screws that attached the motor to the
blower housing. To reassemble, insert the motor into
the blower wheel, (motor slots to be facing up) center
the blower wheel within the blower housing and tighten
the set screw. Reinstall the (3) cap screws and tighten
to 40 in/lbs. Place the entire fan assembly back up over
the weld studs, install the washers and tighten the 1/4-20
nylok nuts to 65 in/lbs.
Fan Assembly Removal
COIL
Coils may be cleaned in place by removing the motor/
blower assemblies and brushing the entering air face
between ns with a soft brush parallel to ns.
Do not brush perpendicular to n orientation as damage
may occur. Brushing should be followed by cleaning
with a vacuum cleaner. If a compressed air source is
available, the coil may also be cleaned by blowing
air through the coil ns from the entering air face.
Vacuuming should again follow this. Units provided
with the proper type of air lters, replaced regularly,
may require periodic coil cleaning.
Electric Heater Removal
ENVIRO-TEC
13
FORM ET115.24-NOM1 (519)
06 08 10 12 14 16 18 20
137 [62] 146 [66] 158 [72] 202 [92] 219 [99] 228 [103]240 [109]250 [113]
1 ROW - DRY
5 [2]6 [3]7 [3]8 [4]10 [5]10 [5]11 [5]12 [5]
1 ROW - WET
7 [3]9 [4]10 [5]11 [5]14 [6]14 [6]16 [7]17 [8]
2 ROW - DRY
11 [5]13 [6]14 [6]16 [7]20 [9]20 [9]22 [10] 24 [11]
2 ROW - WET
14 [6]18 [8]20 [9]23 [10] 27 [12] 28 [13] 32 [15] 35 [16]
3 ROW - DRY
16 [7]19 [9]21 [10] 24 [11] 30 [13] 30 [14] 33 [15] 36 [16]
3 ROW - WET
21 [10] 27 [12] 30 [14] 34 [15] 41 [19] 42 [19] 48 [22] 52 [24]
4 ROW - DRY
21 [10] 25 [12] 29 [13] 33 [15] 40 [18] 40 [18] 44 [20] 48 [22]
4 ROW - WET
27 [12] 35 [16] 41 [19] 46 [21] 54 [25] 56 [25] 64 [29] 69 [31]
5 ROW - DRY
26 [12] 30 [14] 34 [16] 38 [17] 42 [19] 46 [21] 50 [23] 54 [25]
5 ROW - WET
33 [15] 39 [18] 45 [21] 51 [23] 57 [26] 63 [29] 70 [32] 77 [35]
6 ROW - DRY
32 [15] 38 [17] 43 [19] 49 [22] 59 [27] 61 [28] 67 [30] 71 [32]
6 ROW - WET
42 [19] 53 [24] 61 [28] 69 [31] 80 [36] 85 [39] 97 [44] 103 [47]
7 ROW - DRY
38 [17] 42 [19] 48 [22] 54 [25] 60 [28] 66 [30] 72 [33] 78 [35]
7 ROW - WET
49 [23] 56 [26] 63 [29] 70 [32] 77 [35] 84 [38] 91 [42] 98 [45]
8 ROW - DRY
43 [20] 49 [22] 55 [25] 61 [28] 67 [30] 73 [33] 79 [36] 85 [39]
8 ROW - WET
55 [26] 63 [29] 71 [32] 79 [36] 87 [40] 95 [43] 103 [47] 111 [50]
UNIT SIZE
COMPONENT
FNF BASE UN IT
FNP BASE UN IT
FNX BASE UN IT
FNP WITH MIXING BOX
Unit Weight Data
HPF
HPP
HPP
HPE
TOTAL
COIL
ROWS
NOTE: Unit weight data is in pounds [kilograms].
ELECTRIC RESISTANCE HEATER ASSEMBLY
ELECTRICAL SHOCK HAZARDS. ALL
POWER MUST BE DISCONNECTED
PRIOR TO INSTALLATION AND SERVING THIS EQUIPMENT. MORE THAN
ONE SOURCE OF POWER MAY BE
PRESENT. DISCONNECT ALL POWER
SOURCES TO AVOID ELECTROCUTION OR SHOCK
INJURIES.
68 [31] 73 [33] 77 [35] 114 [52] 119 [54] 124 [56] 128 [58] 132 [60]
87 [40] 95 [43] 101 [46] 141 [64] 150 [68] 157 [71] 164 [75] 170 [77]
119 [54] 132 [60] 144 [65] 189 [86] 204 [93] 217 [99] 229 [104]246 [112]
Electric resistance heaters typically require no normal
periodic maintenance when unit air lters are changed
properly. Other conditions and equipment may affect the
operation and service life in the system. The two most
important operating conditions for an electric heater are
proper airow and proper supply voltage. High supply
voltage and/or poorly distributed or insufcient airow
over the element will result in element overheating.
This condition may result in the heater cycling on the
high limit thermal cutout. The open wire type heaters
provided have an automatic reset switch with a back-up
high limit thermal switch. Automatic reset switches are
as the name implies; they reset automatically after the
heater has cooled down. High limit thermal switches
must be replaced once the circuit has been broken.
The high limit thermal cutout device is a safety device
only and is not intended for continuous operation. With
proper unit application and during normal operation,
the high limit thermal cutout will not operate. This
device only operates when some problem exists and
ANY condition that causes high limit cutout MUST be
corrected immediately. High supply voltage also causes
excessive amperage draw and may result in tripping
of the circuit breaker or blowing of the fuses on the
incoming power supply.
ELECTRICAL WIRING & CONTROLS
The electrical operation of each unit is determined by
the components and wiring of the unit and may vary
from unit to unit. Consult the wiring diagram for the
actual type and number of controls provided on each
unit. The integrity of all electrical connections should be
veried at least twice during the rst year of operation.
Afterwards, all controls should be inspected regularly
for proper operation. Some components may experience
erratic operation or failure due to age. Wall thermostats
may also become clogged with dust and lint and should
be periodically inspected and cleaned to provide reliable
operation.
When replacing any components such as fuses,
contactors, or relays, use only the exact type, size, and
voltage component as furnished from the factory. Any
deviation without factory authorization could result
in personnel injury or damage to the unit and will
void all factory warranties. All repair work should be
done in such a manner as to maintain the equipment in
compliance with governing codes and ordinances or
testing agency listings.
14
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
ELECTRICAL CALCULATIONS INFORMATION
MBH6.8 8.510.211.9 13.717.1 20.523.927.330.734.141.047.8
VOLTS
277 7.29.0 10.8 12.6 14.4
277 7.29.0 10.8 12.6 14.4 18.121. 7
277 7.29.0 10.8 12.6 14.4 18.121. 725.3
277 14.4 18.121. 725.328. 932.5
277 14.4 18.121. 725.328. 932.536. 1
277 14.4 18.121. 725.328. 932.536. 143.3
277 14.4 18.121. 725.328. 932.536. 143.3
AMPS
1. Calculate FLA = [(Motor Amps)*(Motor Qty) + (Heater Amps)]
2. Calculate MCA = [(1.25)*(FLA)]
3. Calculate MOP = [(2.25)*(1st Motor Amps) + (2nd Motor Amps) + (Heater Amps)]
a. If the calculated MOP is within 10% of the next smaller available fuse size, that fuse size shall be used. If the calculated
MOP is not within 10% of the next smaller available fuse size, the next larger fuse size above the calculated MOP must
be used.
b. If the selected MOP is smaller than the MCA, the selected MOP must be increased to the next larger available fuse size
above the MCA.
4. Non-Fused Door Interlock Disconnect Switch shall be sized according to MCA.
5. Fused Door Interlock Disconnect Switch and Main Fusing shall be sized according to MOP.
Available fuse sizes: 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80 and 90.
MCA and MOP calculations are based on requirements from ANSI UL 1995 2nd Edition – CAN/CSA C22.2 No. 236-M90 Standard
for Safety; Heating and Cooling Equipment, which incorporates rules from NFPA 70 National Electric Code 2002 edition.
Electric Heat Selection Chart (AMPs)
UNIT
SIZE
06
08
10
12
14
16
KW 2.02.5 3.03.5 4.05.0 6.07.0 8.09.0 10.0 12.0 14.0
115 17.421.826. 130.534. 8
208 9.612.014. 416.819. 2
230 8.710.913. 115.217. 4
115 17.421.826. 130.534. 8 43. 5
208 9.612.014. 416.819. 2 24. 128.9
230 8.710.913. 115.217. 4 21. 826.1
115 17.421.826. 130.534. 8 43. 5
208 9.612.014. 416.819. 2 24. 128.933. 7
230 8.710.913. 115.217. 4 21. 826.130. 5
115 34.8 43.5
208 19.2 24.128. 933.738. 543.3
230 17.4 21.826. 130.534. 839.2
115 34.8 43.5
208 19.2 24.128. 933.738. 543.348. 1
230 17.4 21.826. 130.534. 839.243. 5
115 34.8 43.5
208 19.2 24.128. 933.738. 543.348. 157.7
230 17.4 21.826. 130.534. 839.243. 552.2
18
20
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
115 34.8 43.5
208 19.2 24.128. 933.738. 543.348. 157.7
230 17.4 21.826. 130.534. 839.243. 552.2
115 34.8 43.5
208 19.2 24.128. 933.738. 543.348. 157.767.3
230 17.4 21.826. 130.534. 839.243. 552.260.9
277 14.4 18.121. 725.328. 932.536. 143.350.5
15
FORM ET115.24-NOM1 (519)
COIL FACE 1" THROWAWAY1" PLEATED2" PLEATED
(1) 16 x 16 & (1) 16 x 20
(1)
[406 x 406] & (1) [406 x 508]
(1) 16 x 20 & (1) 16 x 25
UNIT
VALVES & PIPING
No formal maintenance is required on the valve package
components most commonly used with fan coil units
other than a visual inspection for possible leaks in the
course of other normal periodic maintenance. In the
event that a valve should need replacement, the same
precautions taken during the initial installation to protect
the valve package from excessive heat should also be
used during replacement. In some cases, the valve
actuator may fail and usually can be replaced without
removing valve body from piping.
DRAIN
The drain should be checked before initial start-up and
at the beginning of each cooling season to assure that
the lines are clear. If it is clogged, steps should be taken
to clear the debris so that condensate will ow easily.
Periodic checks of the drain should be made during the
cooling season to maintain a free owing condensate.
Should the growth of algae and/or bacteria be a
concern, consult an air conditioning and refrigeration
supply organization familiar with local conditions for
chemicals available to control these agents. If cleaners
are used, they should be compatible with the materials
of construction for the coil and drain pan.
product type and size. If the replacement lters are not
purchased from the factory, the lters used should be
the same type, size and MERV rating as that furnished
from or recommended by the factory. Optional 1” and 2”
pleated lters are available and can be used in this unit.
Contact the local Sales Representative for the correct
lter upgrade specication and availability. Consult the
factory for applications using lter types other than the
factory standard or optional product.
FILTER REPLACEMENT
To replace the lter(s), unscrew the thumb screws
located at the bottom of the lter bracket a few turns
until the lter tray freely slides out. Slide out the used
lter(s) and replace with the new one(s). Reattach the
lter tray to the lter bracket with the supplied thumb
screws.
FILTERS
This unit is equipped with a standard 1” throwaway
lter most commonly used on fan coil units should be
replaced on a regular basis. The time interval between
each replacement should be established based on
regular inspection of the lter and should be recorded
in the log for each unit. At a minimum, lters should
be inspected monthly and replaced if needed. Refer to
The lter tray is fully adjustable and
can be rotated 180 degrees if necessary
to ensure a snug t between the lter
and the lter bracket.
the Filters chart for recommended lter size for each
Face Area, Free Area and Filter Sizes
SIZE
06 1.56 [0.15]
08 2.08 [0.19]
10 2.50 [0.23]
12 3.02 [0.28]
14 3.54 [0.33]
16 4.06 [0.38] (2) 16 x 20 [406 x 508] 4.08 [0.38] 9.6 [0.89] 13.4 [1.24]
18 4.58 [0.43]
20 5.00 [0.46]
NOTES:
1. Face and free areas are in square feet [square meters].
2. Filter sizes are in inches [millimeters].
AREA FACE AR EA GROSS MEDIA AREA GROSS MEDIA AREA
NOMINAL FILTER SIZES
(1) 16 x 16
(1) 16 x 20
(1) 16 x 25
(2) 16 x 16
(1) [406 x 508] & (1) [406 x 635]
(2) 16 x 25
[406 x 406] 1.62 [0.15] 4.0 [0.37] 5.4 [0.50]
[406 x 508] 2.04 [0.19] 4.8 [0.45] 6.8 [0.63]
[406 x 381] 2.57 [0.24] 6.0 [0.56] 8.5 [0.79]
[406 x 406] 3.23 [0.30] 8.0 [0.74] 10.4 [0.97]
[406 x 635] 5.14 [0.48] 12.0 [1.11] 17.0 [1.58]
3.65 [0.34] 8.8 [0.82] 12.2 [1.13]
4.61 [0.43] 10.8 [1.00] 14.3 [1.33]
16
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
REPLACEMENT PARTS
Factory replacement parts should be used wherever
possible to maintain the unit performance and
operating characteristics and the testing agency listings.
Replacement parts may be purchased through the local
Sales Representative.
Contact the local Sales Representative before attempting
any unit modications. Any modications not authorized
by the factory could result in personal injury and damage
to the unit and could void all factory warranties.
When ordering parts, the following information must be
supplied to ensure proper part identication:
1. Complete unit model number
2. Unit hand connection (right or left hand) while
facing the direction of airow at the inlet
3. Complete part description including any numbers
On warranty replacements, in addition to the information
previously listed, the project CO # that appears on the
unit nameplate, is required. Contact the factory for
authorization to return any parts such as defective parts
replaced in warranty. All shipments returned to the
factory MUST be marked with a Return Authorization
Number, which is provided by the factory.
All equipment and components sold through ENVIROTEC are warranted under the same conditions as the
standard manufacturer’s warranty with the exception
that the warranty period is 12 months unless the
component is furnished as warranty replacement. Parts
furnished as warranty replacements are warranted for
the remaining term of the original unit warranties.
ENVIRO-TEC
17
FORM ET115.24-NOM1 (519)
HP Series Coil Connection Sizes
Drawings are representative and may vary depending on selected unit options.
For specific unit dimensions and options information, please refer to applicable
submittal drawings
MODEL “HPF”
HIGH PERFORMANCE
FREE RETURN
FAN COIL UNIT
MODEL “HPP”
HIGH PERFORMANCE
PLENUM RETURN
FAN COIL UNIT
ENVIRO-TEC
MODEL “HPP-M”
HIGH PERFORMANCE
MIXING BOX
FAN COIL UNIT
MODEL “HPE”
HIGH PERFORMANCE
ENCLOSED CABINET
FAN COIL UNIT
18
FORM ET115.24-NOM1 (519)
HP with ECM Variable Speed Motor Balancing Instructions
See Fig.1 for PCB layout
ELECTRICAL SHOCK HAZARDS. All
power must be disconnected prior to installation and serving this equipment. More than
one source of power may be present. Disconnect all power sources to avoid electrocution
or shock injuries.
Commissioning
1. Verify that there is 22 to 28 VAC across terminals 15
and 16.
2. Verify that there is 15 VDC across terminals G (+) and
COM (-).
Manual Balancing
1. Verify that the jumper is in the “MAN” position (shipped
from factory in Manual mode).
2. Connect voltmeter to wire loop VDC (+) and wire loop
COM (-).
3. Determine the DC voltage for required airow from the
Fan Calibration Curve shown in Fig. 2 and supplied on
the side of the equipment. Use the bottom (5 to 10 volts
DC) scale on the chart.
4. Using an insulated 1/8” at bladed screwdriver, adjust
the manual speed potentiometer, labeled SPD, to obtain
the required voltage. Clockwise increases airow,
counterclockwise decreases airow.
5. Do not set the voltage lower than 5.0 VDC or higher than
10.0 VDC or motor may experience starting problems.
(For units shipped prior to April 2011, do not set voltage
lower than 5.1 VDC or higher than 9.9 VDC).
6. Do not set the balance voltage outside limits of the voltage/CFM curve or erratic motor operation and eventual
failure may result.
Remote Balancing
1. Relocate the jumper into the REM position.
2. Determine the DC voltage for required airow from
the Fan Calibration Curve supplied on the side of the
equipment. Use the top (2 to 10 Analog Input Volts
DC) scale on the chart.
3. Remotely adjust the external voltage source to the
desired volts DC for required airow.
4. Do not operate motor at control voltage lower than 2.0
VDC or higher than 10.0 VDC or motor may experience starting problems. (For units shipped prior to April
2011, do not set voltage lower than 2.1 VDC or higher
than 9.9 VDC).
5. Do not set the balance voltage outside limits of the
voltage /CFM curve or erratic motor operation, and
eventual failure may result.
Status LED
When the motor is running, the LED alternates between
CFM and RPM indications. In the RPM mode, LED turns
on for a period of approximately 220 microseconds at a rate
of 36 pulses per revolution. This mode lasts for ten seconds.
Due to the rapid rate, LED will appear to be dimly lit, not
ashing. As RPM is increased, brightness will increase. In
the CFM mode, the LED will ash slowly, and at maximum
brightness, once for every 100 CFM. Accuracy is +/- one
ash. LED will then return to RPM mode, and cycle will
repeat.
24 volts AC
15 A & B
Remote
manual
jumper
Analog input 2 - 10 VDC
FIG. 1 - PCB LAYOUT
19
VDC test loop
Comon test loop
Manual speed
adjustment
(SPD)
24 volts AC
16 A & B
“G” actvation line
Signal common
PWM output
LD14390
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
HP Fan Calibration with ECM Variable Speed Motor
NOTES:
1. MANUAL BALANCING: Do not set the manual CFM adjustment voltage lower than 5.0 VDC or higher
than 10.0 VDC. (For units shipped prior to April 2011, do not set voltage lower than 5.1 VDC or higher
than 9.9 VDC).
2. REMOTE BALANCING: Do not set the remote CFM adjustment voltage lower than 2.1 VDC or higher
than 10.0 VDC. (For units shipped prior to April 2011, do not set voltage lower than 2.1 VDC or higher
than 9.9 VDC).
3. WARNING: Input voltages which are less than or greater than the limits defined above may cause
erratic motor operation and eventual failure.
FIG. 2 - FAN CALIBRATION CURVES
ENVIRO-TEC
20
FORM ET115.24-NOM1 (519)
Troubleshooting Guide for ECM Variable Speed Motor
ECM SPECIFIC TROUBLESHOOTING GUIDELINES
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
CFM Adjustment voltage above 10.0 VDC
Motor Fails to Start
Motor Surges
Excessive Motor Noise
Poor Performance
Motor Runs in Reverse,
Doesn’t Respond to
Speed Adjustment
or below 5.0 VDC. For units shipped prior to
April 2011, do not set voltage lower than 5.1
VDC or higher than 9.9 VDC.
ECM cables improperly seated at motor
ECM cables open or intermittent Replace cable(s). See section on checking cables below.
Mechanical failure Check motor and conrm it rotates freely.
Electrical failure Replace motor.
Fan Relay Contacts Oxidized/Suldized Replace fan relay.
Fan CFM adjustment voltage outside range
of Fan Calibration Curve
ESP (external static pressure) too high
Motor mounting bolts loose Tighten motor mounting bolts.
Fan wheel rubbing on fan housing Align wheel in housing.
Loose fan wheel Align and tighten.
Lack of required external static pressure Add required external static pressure.
Wrong Program Contact Factory.
Motor Failure Replace.
Properly adjust CFM voltage.
Unplug cables from motor and re-install, making sure plugs on
cables are fully seated in motor receptacles.
Adjust voltage to value within range of Fan Calibration Curve.
Verify no discharge obstructions and coil ns are free of debris.
Verify plenum opening is unobstructed. Verify lter (if supplied) is
not dirty and does not obstruct ow of plenum air.
CHECKING ECM CABLES
Remove power from the unit. Unplug signal cable at
motor, but leave quick connects attached to ETPWM
board and fan relay or quick connect terminal block (see
Figure 3). Use ohmmeter to check continuity. Repeat
process for three wire power cable if signal cable does
not appear to be defective (see Figure 3).
Only very light force is required when
inserting meter probe into plug. Excess force will damage contacts.
21
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
LD13842
Black wire to P3 (PWM)
of ETPWM board
Green wire to P2 (Fan On/Off*)
of Fan Relay or Curtis Block
Red wire to P6 (LED)
of ETPWM board
10
12
13
14
15
16
11
9
1
2
3
White wire to P2 (COM)
of ETPWM board
BLACK
WHITE
4
5
6
7
8
Blue wire to P7 (LCOM)
of ETPWM board
GREEN
RED
BLUE
LD13843
FIG. 3 - MOTOR TERMINAL WIRING W/ECM MOTORS
ENVIRO-TEC
LD13844
22
FORM ET115.24-NOM1 (519)
TROUBLESHOOTING GUIDE FOR ECM 3-SPEED
CONSTANT TORQUE MOTOR
23
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
TROUBLE SHOOTING GUIDE FOR ECM 3-SPEED
CONSTANT TORQUE MOTOR
ENVIRO-TEC
24
FORM ET115.24-NOM1 (519)
TROUBLE SHOOTING GUIDE FOR ECM 3-SPEED
CONSTANT TORQUE MOTOR
25
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
TROUBLE SHOOTING GUIDE FOR FAN COIL RELAY BOARD
• Ensure no wires are oating loosely in product.
Verify all wires are connected properly on relay
board.
• Measure input voltage on relay board as indicated
below:
P1– P2 = 115V
P1– P3 = 208V
P1– P4 = 230V
P1– P5 = 277V
• Ensure “MTR PWR” is connected to correct voltages (115V/P7 or 208V/P3 or 230V/P4 or 277V/
P5). See Figure 4 below.
Motor power can only be connected
to one voltage.
P7– P6 = 115V
P8– P6 = 208V
P9– P6 = 230V
P10– P6 = 277V
Connect jumper wire
between 2 points for
motor power or 208V,
230V, 277V
FIG. 4 - FAN COIL RELAY BOARD WITH MOTOR POWER CONNECTIONS
LD13950
ENVIRO-TEC
26
FORM ET115.24-NOM1 (519)
• Verify fan speed will change from High, Medium,
and Low by utilizing remote 3 speed switch,
thermostat or connecting by P18 to P15, P18 to
P16, or P18 to P17. If fan speeds are adjustable
the relay board is producing 24 Volts.
• If board is not working, measure 24 volts between
P20 and P19, if 24 volts (19-29 VAC) is not present then measure across terminals S1 and R, if
24 volts (19-29 VAC) is not present then return
board to local sales representative.
• Verify plug jumper JP3 (Figure 5) is installed or
wire (Figure 6) is installed between W2 and R.
Either JP3 or wire jumper must always
be installed unless thermostat drawing
indicates otherwise.
JP3 should be removed for single
speed operation using “G” terminal.
JP3
FIG. 5 - FAN COIL RELAY BOARD (CURRENT)
JP3
For thermostat with 3 speed switching,
remove JP1 but leave JP3 installed.
LD13952
FIG. 6 - FAN COIL RELAY BOARD (OBSOLETE)
27
LD13951
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
TROUBLE SHOOTING GUIDE FOR FAN COIL RELAY BOARD
S1 – Common side of transformer. Jumped to “C” (common) through JP2. If application calls for oat switch JP2 is
removed and oat switch is connected between S1 and C.
S2 – Convenience terminal. Not connected to other components on the board. Used for different functions based on
application, such as 2nd stage heat control tie point for two
stage EH applications, or changeover water valve/aquastat
tie point for two pipe changeover applications. May also be
used as tie point for “Close” input of modulating hot water
valve actuator and “Close” output of thermostat in oating
[tristate] water valve applications.
R – Transformer “hot” connection (side of transformer that’s
not the one used for valve actuator, EH, etc. commons). Control outputs to board should close to “R” to energize (Refer to
thermostat literature. At least one thermostat, the T600/TEC
model line is known to use the “R” for valve common but
the “C” for fan speed common. This is the only known (by
JCI Largo Engineering) case in which this occurs. All other
thermostats dealt with use the “C” for all device commons).
C – Device common, including onboard speed relays (all
terminals “C” and “COM” on board are tied together).
C – Device common
Y1 – Tie point for chilled water valve actuator control input,
and thermostat cooling output. Convenience terminal, not
connected to anything else on board.
W1 – Tie point for hot water valve actuator or 1st stage EH
control input, and thermostat heating output. Convenience
terminal, tied to P22 “Heat” quick connect for factory termination to EH relay if applicable.
Y2 – tie point for “Close” input of modulating chilled water valve actuator or 2nd stage chilled water valve actuator
control input, and thermostat cooling output. Convenience
terminal, not connected to anything else on board. Y1 is
“Open” output if oating {tristate} chilled water valve actuator is supplied (or used).
G – Connected to “R” thru JP3. Used (with JP3 removed) for
input from single speed (residential style) thermostats that do
not supply three speed fan switching. In these applications, a
separate three speed switch may be used with the “H”, “M” or
“L” inputs, of the provided jumper to set a xed fan speed. If
thermostat supports three speed switching, “H”, “M” and “L”
inputs should be used, and JP3 should remain in place.
H – High speed control input for onboard relay. Parallels the
P17 “HIGH” quick connect input. If thermostat or indepen-
dent three speed switch is used, remove jumper JP1 (female
to female quick jumper wire).
M – Medium speed control for onboard relay. Parallels the
P16 “MED” quick connect input.
L – Low speed control input for onboard relay. Parallels the
P15 “LOW” quick connect input.
HEAT (P22) – Same functionality as W1 when operating
EH.
ENVIRO-TEC
28
FORM ET115.24-NOM1 (519)
EXAMPLE WIRING DIAGRAMS
Typical 24VAC Control Drawing
(refer to unit control enclosure for actual order specic drawings)
29
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
EXAMPLE WIRING DIAGRAMS
ENVIRO-TEC
30
FORM ET115.24-NOM1 (519)
EXAMPLE WIRING DIAGRAMS
Example with ECM Motor
31
ENVIRO-TEC
FORM ET115.24-NOM1 (519)
INSTRUCTIONS FOR REMOTE THERMOSTAT
OR REMOTE 3-SPEED SWITCH
ENVIRO-TEC
To install remote speed switch to motor , perform the following:
Step 1: Cut Quick Ends
Step 2: Strip Wire End
Step 3: Wire Nut Remote Thermostat or Remote 3-Speed Switch on Motor
32
FORM ET115.24-NOM1 (519)
APPENDIX
COMPONENT INSTALLATION, OPERATION & MAINTENANCE MANUALS
Analog Thermostats – Data and Instructions
Digital Thermostat (D-Series) – Installation Guide
Digital Thermostat (D-Series) – Operating Manual
Programmable Thermostat (P-Series) – Installation Guide
Programmable Thermostat (P-Series) – Operating Manual
N-Series and F-Series T6xx – Installation Instructions
Return Air Sensor (for operation with D-Series or P-Series) – Installation Instructions
For installation, operation and maintenance manuals not listed above, please contact
factory. Contact local sales office for copies of documentation listed above.
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: ET115.24-NOM1 (519) Supersedes ET115.24-NOM1 (615)
© 2019 Johnson Controls, Inc. P.O. Box 423, Milwaukee, WI 53201 Printed in USA
www.enviro-tec.com
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