Heat Controller Geomax 2 Two Stage Geothermal Quick Start Guide

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2014-07-19

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Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com
INSTALLATION, OPERATION
& MAINTENANCE MANUAL
HTV/HTD/HTH Series
Two-Stage
Geothermal Heat Pumps
2 to 6 Tons
2
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Model Breakdown
Model Nomenclature – Two Stage Geothermal Heat Pump
HT = Heat Controller Two Stage
C0 2 4 C1 0 1 A L K
4 5 6 7
8
91011121314
024
Unit Size
036 Return Air Flow Configuration
Voltage
C = CXM
Controls
B = Efficiency Upgrade
C = Microchannel Air Coil on 036
Revision Level Heat Exchanger Options
Cabinet
Supply Air Flow &
Motor Configuration
HT
1 2
Series
V
3
V = Vertical Up Flow
H = Horizontal
D = Vertical Down Flow
Configuration
L = Left Return
R = Right Return
Water Circuit Options
048
060
0 = Residential
1 = HWG w/Internal Pump
0 = None
Supply Configuration Motor
K
N
P
W
HTV
HTD
HTH
HTH
Top
Down
Back
Straight
ECM
ECM
ECM
ECM
070
1 = 208-230/30/1
A = Copper Water Coil, Coated Air Coil
J = Copro-Nickel Water Coil, Coated Air Coil
TABLE OF CONTENTS
Model Nomenclature ..........................................2
Storage ...............................................................4
Pre-Installation....................................................4
Horizontal Installation .........................................5
Field Conversion of Air Discharge ......................7
Duct System Installation .....................................8
Condensate Piping Installation ...........................8
Vertical Installation........................................ 9-10
Water Connection Installation ...........................11
Ground Loop Applications ...........................11-12
Open Loop - Ground Water Systems ...............13
Water Quality Standards ..................................15
Hot Water Generator .................................. 16-18
Electrical - Line Voltage .............................. 19-20
Electrical - Low Voltage Wiring ................... 21-22
Accessory Connections ....................................22
Electrical - Thermostat Wiring ..........................23
ECM Blower Control ................................... 24-25
Blower Data ......................................................26
CXM Controls ...................................................27
Safety Features – CXM Control.................. 28-30
Unit Commissioning
And Operating Conditions ................................31
Unit Start-Up and Operating Conditions ...........32
Unit Start-Up Procedure ...................................32
Coax Pressure Drop Tables ..............................34
Unit Operating Conditions .......................... 35-36
Performance Data ...................................... 37-41
Preventive Maintenance ...................................42
Troubleshooting ................................................43
CXM Process Flow Chart .................................44
Functional & Performance
Troubleshooting .......................................... 45-46
Troubleshooting Form ......................................47
Refrigerant Circuit Diagram ..............................47
Revision History................................................48
3
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
WARNING!
WARNING!
CAUTION!
WARNING! To avoid the release of refrigerant into the
atmosphere, the refrigerant circuit of this unit must be serviced
only by technicians who meet local, state, and federal
profi ciency requirements.
CAUTION! To avoid equipment damage, DO NOT use these
units as a source of heating or cooling during the construction
process. The mechanical components and fi lters will quickly
become clogged with construction dirt and debris, which may
cause system damage.
WARNING! All refrigerant discharged from this unit must be
recovered WITHOUT EXCEPTION. Technicians must follow
industry accepted guidelines and all local, state, and federal
statutes for the recovery and disposal of refrigerants. If a
compressor is removed from this unit, refrigerant circuit oil will
remain in the compressor. To avoid leakage of compressor oil,
refrigerant lines of the compressor must be sealed after it is
removed.
Safety
Warnings, cautions and notices appear throughout this manual.
Read these items carefully before attempting any installation,
service, or troubleshooting of the equipment.
DANGER: Indicates an immediate hazardous situation, which if
not avoided will result in death or serious injury. DANGER labels
on unit access panels must be observed.
WARNING: Indicates a potentially hazardous situation, which if
not avoided could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation or an
unsafe practice, which if not avoided could result in minor or
moderate injury or product or property damage.
NOTICE: Notifi cation of installation, operation or maintenance
information, which is important, but which is not hazard-related.
4
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
General Information
Inspection
Upon receipt of the equipment, carefully check the shipment
against the bill of lading. Make sure all units have been received.
Inspect the packaging of each unit, and inspect each unit for
damage. Insure that the carrier makes proper notation of any
shortages or damage on all copies of the freight bill and completes
a common carrier inspection report. Concealed damage not
discovered during unloading must be reported to the carrier within
15 days of receipt of shipment. If not filed within 15 days, the
freight company can deny the claim without recourse. Note: It is the
responsibility of the purchaser to file all necessary claims with the
carrier. Notify your equipment supplier of all damage within fi fteen
(15) days of shipment.
Storage
Equipment should be stored in its original packaging in a clean,
dry area. Store units in an upright position at all times. Stack units
a maximum of 3 units high.
Unit Protection
Cover units on the job site with either the original packaging or
an equivalent protective covering. Cap the open ends of pipes
stored on the job site. In areas where painting, plastering, and/
or spraying has not been completed, all due precautions must be
taken to avoid physical damage to the units and contamination
by foreign material. Physical damage and contamination may
prevent proper start-up and may result in costly equipment clean-
up.
Examine all pipes, fittings, and valves before installing any of the
system components. Remove any dirt or debris found in or on
these components.
Pre-Installation
Installation, Operation, and Maintenance instructions are
provided with each unit. Horizontal equipment is designed for
installation above false ceiling or in a ceiling plenum. Other unit
confi gurations are typically installed in a mechanical room. The
installation site chosen should include adequate service clearance
around the unit. Before unit start-up, read all manuals and
become familiar with the unit and its operation. Thoroughly check
the system before operation.
Prepare units for installation as follows:
1. Compare the electrical data on the unit nameplate with
ordering and shipping information to verify that the correct unit
has been shipped.
2. Keep the cabinet covered with the original packaging until
installation is complete and all plastering, painting, etc. is
fi nished.
3. Verify refrigerant tubing is free of kinks or dents and that it
does not touch other unit components.
4. Inspect all electrical connections. Connections must be clean
and tight at the terminals.
5. Remove any blower support packaging (water-to-air units
only).
6. Loosen compressor bolts on units equipped with compressor
grommet vibration isolation until the compressor rides freely
on the grommets.
7. Locate and verify any hot water generator (HWG), hanger,
or other accessory kit located in the compressor section or
blower section.
CAUTION! DO NOT store or install units in corrosive
environments or in locations subject to temperature or
humidity extremes (e.g., attics, garages, rooftops, etc.).
Corrosive conditions and high temperature or humidity can
signifi cantly reduce performance, reliability, and service
life. Always move and store units in an upright position.
Tilting units on their sides may cause equipment damage.
CAUTION!
CAUTION!
CAUTION! CUT HAZARD - Failure to follow this caution
may result in personal injury. Sheet metal parts may have
sharp edges or burrs. Use care and wear appropriate
protective clothing, safety glasses and gloves when
handling parts and servicing heat pumps.
5
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
General Information
Mounting Horizontal Units
Horizontal units have hanger kits pre-installed from the factory
as shown in Figure 1. Figure 3 shows a typical horizontal unit
installation.
Horizontal heat pumps are typically suspended above a ceiling or
within a soffi t using fi eld supplied, threaded rods sized to support
the weight of the unit.
Use four (4) fi eld supplied threaded rods and factory provided
vibration isolators to suspend the unit. Hang the unit clear of the
fl oor slab above and support the unit by the mounting bracket
assemblies only. DO NOT attach the unit fl ush with the fl oor slab
above.
Pitch the unit toward the drain as shown in Figure 2 to improve
the condensate drainage. On small units (less than 8.8kW) ensure
that unit pitch does not cause condensate leaks inside the
cabinet.
Drain
Connection
1/4” (6.4mm) pitch
per foot for drainage
Figure 1: Hanger Bracket
Figure 2: Horizontal Unit Pitch
Horizontal Unit Location
Units are not designed for outdoor installation. Locate the unit in
an INDOOR area that allows enough space for service personnel
to perform typical maintenance or repairs without removing unit
from the ceiling. Horizontal units are typically installed above a
false ceiling or in a ceiling plenum. Never install units in areas
subject to freezing or where humidity levels could cause cabinet
condensation (such as unconditioned spaces subject to 100%
outside air). Consideration should be given to access for easy
removal of the fi lter and access panels. Provide suffi cient room to
make water, electrical, and duct connection(s).
If the unit is located in a confi ned space, such as a closet,
provisions must be made for return air to freely enter the space
by means of a louvered door, etc. Any access panel screws that
would be diffi cult to remove after the unit is installed should
be removed prior to setting the unit. Refer to Figure 3 for an
illustration of a typical installation. Refer to unit specifi cations
catalog for dimensional data.
Conform to the following guidelines when selecting
unit location:
1.
Provide a hinged access door in concealed-spline or plaster
ceilings. Provide removable ceiling tiles in T-bar or lay-in
ceilings. Refer to horizontal unit dimensions for specifi c
series and model in unit specifi cations catalog. Size the
access opening to accommodate the service technician
during the removal or replacement of the compressor and
the removal or installation of the unit itself.
2.
Provide access to hanger brackets, water valves and fi ttings.
Provide screwdriver clearance to access panels, discharge
collars and all electrical connections.
3. DO NOT obstruct the space beneath the unit with piping,
electrical cables and other items that prohibit future removal
of components or the unit itself.
4. Use a manual portable jack/lift to lift and support the weight
of the unit during installation and servicing.
The installation of water source heat pump units and all
associated components, parts and accessories which make
up the installation shall be in accordance with the regulations
of ALL authorities having jurisdiction and MUST conform to
all applicable codes. It is the responsibility of the installing
contractor to determine and comply with ALL applicable codes
and regulations.
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Horizontal Installation
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Figure 3: Typical Horizontal Unit Installation
Air Coil -
To obtain maximum performance, the air coil should be
cleaned before start-up. A 10% solution of dishwasher detergent
and water is recommended for both sides of the coil. A thorough
water rinse should follow.
7
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Water
Connection End
Return Air
Remove Screws
Water
Connection End
Return Air
Rotate
Move to Side
Side Discharge
Return Air
Water
Connection End
Discharge Air
Drain
Back Discharge
Replace Screws
Water
Connection End
Supply Duct
Return Air
Water
Connection End
Drain
Return Air
Discharge Air
Side Discharge
Back Discharge
Field Conversion of Air Discharge
Figure 5: Right Return Side to Back
Figure 4: Left Return Side to Back
Overview -
Horizontal units can be fi eld converted between side
(straight) and back (end) discharge using the instructions below.
Note: It is not possible to fi eld convert return air between left or
right return models due to the necessity of refrigeration copper
piping changes.
Preparation - It is best to fi eld convert the unit on the ground
before hanging. If the unit is already hung it should be taken down
for the fi eld conversion.
Side to Back Discharge Conversion
1.
Place unit in well lit area. Remove the screws as shown in
Figure 4 to free top panel and discharge panel.
2. Lift out the access panel and set aside. Lift and rotate the
discharge panel to the other position as shown, being careful
with the blower wiring.
3.
Check blower wire routing and connections for tension or
contact with sheet metal edges. Reroute if necessary.
4. Check refrigerant tubing for contact with
other components.
5. Reinstall top panel and screws noting that the location for
some screws will have changed.
6. Manually spin the fan wheel to ensure that the wheel is not
rubbing or obstructed.
7. Replace access panels.
Back to Side Discharge Conversion - If the discharge is changed
from back to side, use above instruction noting that illustrations will
be reversed.
Left vs. Right Return - It is not possible to fi eld convert return air
between left or right return models due to the necessity of refrigera-
tion copper piping changes. However, the conversion process of
side to back or back to side discharge for either right or left return
confi guration is the same. In some cases, it may be possible to
rotate the entire unit 180 degrees if the return air connection needs
to be on the opposite side. Note that rotating the unit will move the
piping to the other end of the unit.
8
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
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Using a threaded pipe or similar device to clear
any excess paint accumulated inside this fitting
may ease final drain line installation.
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Figure 6: Horizontal Condensate Connection
Horizontal Installation
Condensate Piping – Horizontal Units
Pitch the unit toward the drain as shown in Figure 2 to improve
the condensate drainage. On small units (less than 2.5 tons/8.8
kW), insure that unit pitch does not cause condensate leaks
inside the cabinet.
Install condensate trap at each unit with the top of the trap
positioned below the unit condensate drain connection as shown
in Figure 6. Design the depth of the trap (water-seal) based
upon the amount of ESP capability of the blower (where 2 inches
[51mm] of ESP capability requires 2 inches [51mm] of trap depth).
As a general rule, 1-1/2 inch [38mm] trap depth is the minimum.
Each unit must be installed with its own individual trap and
connection to the condensate line (main) or riser. Provide a
means to fl ush or blow out the condensate line. DO NOT install
units with a common trap and/or vent.
Always vent the condensate line when dirt or air can collect in
the line or a long horizontal drain line is required. Also vent when
large units are working against higher external static pressure
than other units connected to the same condensate main since
this may cause poor drainage for all units on the line. WHEN A
VENT IS INSTALLED IN THE DRAIN LINE, IT MUST BE LOCATED
AFTER THE TRAP IN THE DIRECTION OF THE CONDENSATE
FLOW.
CAUTION!
Duct System Installation
The duct system should be sized to handle the design airfl ow
quietly. Refer to Figure 3 for horizontal duct system details or
fi gure 8 for vertical duct system details. A fl exible connector is
recommended for both discharge and return air duct connections
on metal duct systems to eliminate the transfer of vibration to
the duct system. To maximize sound attenuation of the unit
blower, the supply and return plenums should include internal
fi berglass duct liner or be constructed from ductboard for the
fi rst few feet. Application of the unit to uninsulated ductwork
in an unconditioned space is not recommended, as the unit’s
performance will be adversely affected.
At least one 90° elbow should be included in the supply duct to
reduce air noise. If air noise or excessive air fl ow is a problem,
the blower speed can be changed. For airfl ow charts, consult
specifi cations catalog for the series and model of the specifi c
unit.
If the unit is connected to existing ductwork, a previous check
should have been made to insure that the ductwork has the
capacity to handle the airfl ow required for the unit. If ducting is
too small, as in the replacement of a heating only system, larger
ductwork should be installed. All existing ductwork should be
checked for leaks and repaired as necessary.
DUCT SYSTEM INSTALLATION
C
ondensate Pipin
g
CAUTION! Ensure condensate line is pitched toward drain
1/8 inch per ft [11mm per m] of run.
9
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Vertical Installation
Figure 7: Vertical Unit Mounting
Figure 8: Typical Vertical Unit Installation Using Ducted
Return Air
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Flexible canvas duct
connector to reduce
noise and vibration
Use turning vanes in
supply transition
Internally insulate supply
duct for first 1.2 m each way
to reduce noise
Internally insulate return
transition duct to reduce
noise
Rounded return
transition
Rev.: 6/2/09S
Vertical Unit Location
Units are not designed for outdoor installation. Locate the unit in
an INDOOR area that allows enough space for service personnel
to perform typical maintenance or repairs without removing unit
from the mechanical room/closet. Vertical units are typically
installed in a mechanical room or closet. Never install units in
areas subject to freezing or where humidity levels could cause
cabinet condensation (such as unconditioned spaces subject to
100% outside air). Consideration should be given to access for
easy removal of the fi lter and access panels. Provide suffi cient
room to make water, electrical, and duct connection(s).
If the unit is located in a confi ned space, such as a closet,
provisions must be made for return air to freely enter the space
by means of a louvered door, etc. Any access panel screws that
would be diffi cult to remove after the unit is installed should
be removed prior to setting the unit. Refer to Figures 7 and 8
for typical installation illustrations. Refer to unit specifi cations
catalog for dimensional data.
1.
Install the unit on a piece of rubber, neoprene or other
mounting pad material for sound isolation. The pad should
be at least 3/8” [10mm] to 1/2” [13mm] in thickness. Extend
the pad beyond all four edges of the unit.
2. Provide adequate clearance for fi lter replacement and drain
pan cleaning. Do not block fi lter access with piping, conduit
or other materials. Refer to unit specifi cations for dimensional
data.
3. Provide access for fan and fan motor maintenance and for
servicing the compressor and coils without removing the unit.
4. Provide an unobstructed path to the unit within the closet
or mechanical room. Space should be suffi cient to allow
removal of the unit, if necessary.
5. Provide access to water valves and fi ttings and screwdriver
access to the unit side panels, discharge collar and all
electrical connections.
Downfl ow units may be installed directly on the fl oor. The
optional internal electric heat is rated for zero clearance to
combustible materials.
The installation of water source heat pump units and all
associated components, parts and accessories which make
up the installation shall be in accordance with the regulations
of ALL authorities having jurisdiction and MUST conform to
all applicable codes. It is the responsibility of the installing
contractor to determine and comply with ALL applicable codes
and regulations.
10
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Vertical Installation
Return
Air Inlet
Figure 9: Vertical Sound Attenuation ರ
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Using a threaded pipe or similar device to clear
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Figure 10a: Vertical Condensate Drain
Figure 10b: Vertical Internal Condensate Trap
Condensate Piping for Vertical Units - Vertical units utilize a
condensate hose inside the cabinet as a trapping loop; therefore
an external trap is not necessary. Figure 10a shows typical
condensate connections. Figure 10b illustrates the internal trap
for a typical vertical heat pump. Each unit must be installed with
its own individual vent (where necessary) and a means to fl ush
or blow out the condensate drain line. Do not install units with a
common trap and/or vent.
Sound Attenuation for Vertical Units - Sound attenuation is
achieved by enclosing the unit within a small mechanical room
or a closet. Additional measures for sound control include the
following:
1. Mount the unit so that the return air inlet is 90° to the
return air grille. Refer to Figure 9. Install a sound baffl e as
illustrated to reduce line-of sight sound transmitted through
return air grilles.
2.
Mount the unit on an Unit Isolation Pad to minimize vibration
transmission to the building structure. For more information on
Unit Isolation Pads, contact your distributor.
11
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Water Connection Installation
External Flow Controller Mounting
The Flow Controller can be mounted beside the unit as shown
in Figure 12. Review the Flow Controller installation manual for
more details.
Gasket
Swivel Nut
Stainless steel
snap ring
Brass Adaptor
Hand Tighten
Only!
Do Not
Overtighten!
Figure 11: Water Connections
Pre-Installation
Prior to installation, locate and mark all existing underground
utilities, piping, etc. Install loops for new construction before
sidewalks, patios, driveways, and other construction has begun.
During construction, accurately mark all ground loop piping on
the plot plan as an aid in avoiding potential future damage to the
installation.
Piping Installation
The typical closed loop ground source system is shown in Figure
12. All earth loop piping materials should be limited to polyethylene
fusion only for in-ground sections of the loop. Galvanized or steel
fi ttings should not be used at any time due to their tendency to
corrode. All plastic to metal threaded fi ttings should be avoided due
to their potential to leak in earth coupled applications. A fl anged
fi tting should be substituted. P/T plugs should be used so that
fl ow can be measured using the pressure drop of the unit heat
exchanger.
Earth loop temperatures can range between 25 and 110°F [-4
to 43°C]. Flow rates between 2.25 and 3 gpm per ton [2.41 to
3.23 l/m per kW] of cooling capacity is recommended in these
applications.
Test individual horizontal loop circuits before backfi lling. Test
vertical U-bends and pond loop assemblies prior to installation.
Pressures of at least 100 psi [689 kPa] should be used when
testing. Do not exceed the pipe pressure rating. Test entire
system when all loops are assembled.
Flushing the Earth Loop
Once piping is completed between the unit, Flow Controller and
the ground loop (Figure 12), the loop is ready for fi nal purging
and charging. A fl ush cart with at least a 1.5 hp [1.1 kW] pump is
required to achieve enough fl uid velocity in the loop piping system
to purge air and dirt particles. An antifreeze solution is used in
GROUND-LOOP HEAT PUMP APPLICATIONS
CAUTION!
High and
Low Voltage
Knockouts
Vibration Isolation Pad
To Thermostat
Figure 12: Typical Ground-Loop Application
CAUTION! The following instructions represent industry
accepted installation practices for closed loop earth coupled
heat pump systems. Instructions are provided to assist the
contractor in installing trouble free ground loops. These
instructions are recommendations only. State/provincial
and local codes MUST be followed and installation MUST
conform to ALL applicable codes. It is the responsibility of
the installing contractor to determine and comply with ALL
applicable codes and regulations.
Water Connections-Residential (Distributor) Models
Residential models utilize swivel piping fi ttings for water
connections that are rated for 450 psi (3101 kPa) operating
pressure. The connections have a rubber gasket seal similar to a
garden hose gasket, which when mated to the fl ush end of most
1” threaded male pipe fi ttings provides a leak-free seal without
the need for thread sealing tape or joint compound. Check for
burrs and ensure that the rubber seal is in the swivel connector
prior to attempting any connection (rubber seals are shipped
attached to the swivel connector). DO NOT OVER TIGHTEN or
leaks may occur.
The female locking ring is threaded onto the pipe threads which
holds the male pipe end against the rubber gasket, and seals the
joint. HAND TIGHTEN ONLY! DO NOT OVERTIGHTEN!
12
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Ground-Loop Heat Pump Applications
most areas to prevent freezing. All air and debris must be removed
from the earth loop piping before operation. Flush the loop with a
high volume of water at a minimum velocity of 2 fps (0.6 m/s) in all
piping. The steps below must be followed for proper fl ushing.
1. Fill loop with water from a garden hose through the fl ush cart
before using the fl ush cart pump to insure an even fi ll.
2. Once full, the fl ushing process can begin. Do not allow the
water level in the fl ush cart tank to drop below the pump inlet
line to avoid air being pumped back out to the earth loop.
3. Try to maintain a fl uid level in the tank above the return tee
so that air cannot be continuously mixed back into the fl uid.
Surges of 50 psi (345 kPa) can be used to help purge air
pockets by simply shutting off the return valve going into the
fl ush cart reservoir. This “dead heads” the pump to 50 psi (345
kPa). To purge, dead head the pump until maximum pumping
pressure is reached. Open the return valve and a pressure
surge will be sent through the loop to help purge air pockets
from the piping system.
4. Notice the drop in fl uid level in the fl ush cart tank when the
return valve is shut off. If air is adequately purged from the
system, the level will drop only 1-2 inches (2.5 - 5 cm) in a
10” (25 cm) diameter PVC fl ush tank (about a half gallon [2.3
liters]), since liquids are incompressible. If the level drops
more than this, fl ushing should continue since air is still
being compressed in the loop fl uid. Perform the “dead head”
procedure a number of times. Note: This fl uid level drop is
your only indication of air in the loop.
Antifreeze may be added before, during or after the fl ushing
procedure. However, depending upon which time is chosen,
antifreeze could be wasted when emptying the fl ush cart tank.
See antifreeze section for more details.
Loop static pressure will fl uctuate with the seasons. Pressures
will be higher in the winter months than during the cooling
season. This fl uctuation is normal and should be considered
when charging the system initially. Run the unit in either heating
or cooling for a number of minutes to condition the loop to a
homogenous temperature. This is a good time for tool cleanup,
piping insulation, etc. Then, perform fi nal fl ush and pressurize
the loop to a static pressure of 50-75 psi [345-517 kPa] (winter)
or 35-40 psi [241-276 kPa] (summer). After pressurization, be
sure to loosen the plug at the end of the Grundfos loop pump
motor(s) to allow trapped air to be discharged and to insure the
motor housing has been fl ooded. This is not required for Taco
circulators. Insure that the Flow Controller provides adequate
fl ow through the unit by checking pressure drop across the heat
exchanger and compare to the pressure drop tables at the back
of the manual.
Antifreeze
In areas where minimum entering loop temperatures drop below
40°F [5°C] or where piping will be routed through areas subject
to freezing, antifreeze is required. Alcohols and glycols are
commonly used as antifreeze; however your local sales manager
should be consulted for the antifreeze best suited to your area.
Low temperature protection should be maintained to 15°F [9°C]
below the lowest expected entering loop temperature. For
example, if 30°F [-1°C] is the minimum expected entering loop
temperature, the leaving loop temperature would be 25 to 22°F
[-4 to -6°C] and low temperature protection should be at 15°F
[-10°C]. Calculation is as follows:
30°F - 15°F = 15°F [-1°C - 9°C = -10°C].
All alcohols should be premixed and pumped from a reservoir
outside of the building when possible or introduced under the
water level to prevent fumes. Calculate the total volume of
fl uid in the piping system. Then use the percentage by volume
shown in Table 2 for the amount of antifreeze needed. Antifreeze
concentration should be checked from a well mixed sample
using a hydrometer to measure specifi c gravity.
Table 1: Approximate Fluid Volume (gal.) per 100' of Pipe
Fluid Volume (gal [liters] per 100’ [30 meters) Pipe)
Pipe Size Volume (gal) [liters]
Copper
1” 4.1 [15.3]
1.25” 6.4 [23.8]
2.5” 9.2 [34.3]
Rubber Hose 1” 3.9 [14.6]
Polyethylene
3/4” IPS SDR11 2.8 [10.4]
1” iPS SDR11 4.5 [16.7]
1.25” IPS SDR11 8.0 [29.8]
1.5” IPS SDR11 10.9 [40.7]
2” IPS SDR11 18.0 [67.0]
1.25” IPS SCH40 8.3 [30.9]
1.5” IPS SCH40 10.9 [40.7]
2” IPS SCH40 17.0 [63.4]
Unit Heat Exchanger Typical 1.0 [3.8]
Flush Cart Tank 10” Dia x 3ft tall
[254mm x 91.4cm tall] 10 [37.9]
Low Water Temperature Cutout Setting - CXM Control
When antifreeze is selected, the FP1 jumper (JW3) should be
clipped to select the low temperature (antifreeze 10°F [-12.2°C])
set point and avoid nuisance faults (see “Low Water Temperature
Cutout Selection” in this manual). Note: Low water temperature
operation requires extended range equipment.
13
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Table 2: Antifreeze Percentages by Volume
Ground-Loop Heat Pump Applications
GROUND-WATER HEAT PUMP APPLICATIONS
Open Loop - Ground Water Systems
Typical open loop piping is shown in Figure 13. Shut off valves
should be included for ease of servicing. Boiler drains or other
valves should be “tee’d” into the lines to allow acid fl ushing of the
heat exchanger. Shut off valves should be positioned to allow fl ow
through the coax via the boiler drains without allowing fl ow into the
piping system. P/T plugs should be used so that pressure drop
and temperature can be measured. Piping materials should be
limited to copper or PVC SCH80. Note: Due to the pressure and
temperature extremes, PVC SCH40 is not recommended.
Water quantity should be plentiful and of good quality. Consult
table 3 for water quality guidelines. The unit can be ordered with
either a copper or cupro-nickel water heat exchanger. Consult
table 3 for recommendations. Copper is recommended for
closed loop systems and open loop ground water systems that
are not high in mineral content or corrosiveness. In conditions
anticipating heavy scale formation or in brackish water, a cupro-
nickel heat exchanger is recommended. In ground water situations
where scaling could be heavy or where biological growth such
as iron bacteria will be present, an open loop system is not
recommended. Heat exchanger coils may over time lose heat
exchange capabilities due to build up of mineral deposits. Heat
exchangers must only be serviced by a qualifi ed technician, as
acid and special pumping equipment is required. Desuperheater
coils can likewise become scaled and possibly plugged. In areas
with extremely hard water, the owner should be informed that the
heat exchanger may require occasional acid fl ushing. In some
cases, the desuperheater option should not be recommended due
to hard water conditions and additional maintenance required.
Water Quality Standards
Table 3 should be consulted for water quality requirements.
Scaling potential should be assessed using the pH/Calcium
hardness method. If the pH <7.5 and the Calcium hardness is
less than 100 ppm, scaling potential is low. If this method yields
numbers out of range of those listed, the Ryznar Stability and
Langelier Saturation indecies should be calculated. Use the
appropriate scaling surface temperature for the application,
150°F [66°C] for direct use (well water/open loop) and DHW
(desuperheater); 90°F [32°F] for indirect use. A monitoring plan
should be implemented in these probable scaling situations. Other
water quality issues such as iron fouling, corrosion prevention and
erosion and clogging should be referenced in Table 3.
Pressure Tank and Pump
Use a closed, bladder-type pressure tank to minimize mineral
formation due to air exposure. The pressure tank should be
sized to provide at least one minute continuous run time of the
pump using its drawdown capacity rating to prevent pump short
cycling. Discharge water from the unit is not contaminated in any
manner and can be disposed of in various ways, depending on
local building codes (e.g. recharge well, storm sewer, drain fi eld,
adjacent stream or pond, etc.). Most local codes forbid the use
of sanitary sewer for disposal. Consult your local building and
zoning department to assure compliance in your area.
The pump should be sized to handle the home’s domestic water
load (typically 5-9 gpm [23-41 l/m]) plus the fl ow rate required
for the heat pump. Pump sizing and expansion tank must be
chosen as complimentary items. For example, an expansion
tank that is too small can causing premature pump failure due
to short cycling. Variable speed pumping applications should be
considered for the inherent energy savings and smaller pressure
tank requirements.
Water Control Valve
Note the placement of the water control valve in fi gure 13. Always
maintain water pressure in the heat exchanger by placing the
water control valve(s) on the discharge line to prevent mineral
precipitation during the off-cycle. Pilot operated slow closing
valves are recommended to reduce water hammer. If water
hammer persists, a mini-expansion tank can be mounted on the
piping to help absorb the excess hammer shock. Insure that the
total ‘VA’ draw of the valve can be supplied by the unit transformer.
For instance, a slow closing valve can draw up to 35VA. This
can overload smaller 40 or 50 VA transformers depending on the
other controls in the circuit. A typical pilot operated solenoid valve
draws approximately 15VA (see Figure 22). Note the special wiring
diagrams for slow closing valves (Figures 23 & 24).
Flow Regulation
Flow regulation can be accomplished by two methods. One method
of fl ow regulation involves simply adjusting the ball valve or water
control valve on the discharge line. Measure the pressure drop
through the unit heat exchanger, and determine fl ow rate from
tables 9a through 9c. Since the pressure is constantly varying, two
pressure gauges may be needed. Adjust the valve until the desired
fl ow of 1.5 to 2 gpm per ton [2.0 to 2.6 l/m per kW] is achieved.
A second method of fl ow control requires a fl ow control device
Type
Minimum Temperature
for Low Temperature Protection
10°F
[-12.2°C] 15°F
[-9.4°C] 20°F
[-6.7°C] 25°F
[-3.9°C]
Methanol
Propylene Glycol
Ethanol*
21%
29%
23%
17%
24%
20%
13%
18%
16%
8%
12%
11%
* Must not be denatured with any petroleum based product
14
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
$LU3DGRU
([WUXGHG
SRO\VW\UHQH
LQVXODWLRQERDUG
8QLW3RZHU
'LVFRQQHFW
7KHUPRVWDW
:LULQJ
3UHVVXUH
7D Q N
6KXW2II
9D O Y H
%RLOHU
'UDLQV
)ORZ
5HJXODWRU
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:DWHU2XW
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9D O Y H
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Figure 13: Typical Open Loop/Well Application
Ground-Water Heat Pump Applications
mounted on the outlet of the water control valve. The device is
typically a brass fi tting with an orifi ce of rubber or plastic material
that is designed to allow a specifi ed fl ow rate. On occasion, fl ow
control devices may produce velocity noise that can be reduced
by applying some back pressure from the ball valve located on the
discharge line. Slightly closing the valve will spread the pressure
drop over both devices, lessening the velocity noise. NOTE: When
EWT is below 50°F [10°C], a minimum of 2 gpm per ton (2.6 l/m
per kW) is required.
Water Coil Low Temperature Limit Setting
For all open loop systems the 30°F [-1.1°C] FP1 setting (factory
setting-water) should be used to avoid freeze damage to the unit.
See “Low Water Temperature Cutout Selection” in this manual for
details on the low limit setting.
CAUTION!
CAUTION! Refrigerant pressure activated water regulating
valves should never be used with this equipment.
15
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Water Quality Standards
Table 3: Water Quality Standards
Water Quality
Parameter HX
Material Closed
Recirculating Open Loop and Recirculating Well
Scaling Potential - Primary Measurement
pH/Calcium Hardness All -pH < 7.5 and Ca Hardness <100ppm
Method
Index Limits for Probable Scaling Situations - (Operation outside these limits is not recommended)
Ryznar All - 6.0 - 7.5
Stability Index If >7.5 minimize steel pipe use.
Langelier All --0.5 to +0.5
Saturation Index If <-0.5 minimize steel pipe use. Based upon 66°C HWG and
Direct well, 29°C Indirect Well HX
Iron Fouling
Iron Fe 2+ (Ferrous) All -<0.2 ppm (Ferrous)
(Bacterial Iron potential) If Fe2+
(ferrous)>0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.
Iron Fouling All -<0.5 ppm of Oxygen
Above this level deposition will occur.
Corrosion Prevention
pH All
6 - 8.5 6 - 8.5
Monitor/treat as
needed Minimize steel pipe below 7 and no open tanks with pH <8
Hydrogen Sulfide (H2S) All
- <0.5 ppm
At H2S>0.2 ppm, avoid use of copper and copper nickel piping or HX's.
Rotten egg smell appears at 0.5 ppm level.
Copper alloy (bronze or brass) cast components are OK to <0.5 ppm.
Ammonia ion as hydroxide, chloride,
nitrate and sulfate compounds All -<0.5 ppm
Maximum
Maximum Allowable at maximum water temperature.
Chloride Levels
10$C24$C38
C
Copper
Cupronickel
-<20ppm NR NR
-<150 ppm NR NR
304 SS-<400 ppm <250 ppm <150 ppm
316 SS-<1000 ppm <550 ppm < 375 ppm
Titanium ->1000 ppm >550 ppm >375 ppm
Erosion and Clogging
Particulate Size and
Erosion All
<10 ppm of particles
and a maximum
velocity of 1.8 m/s
Filtered for maximum
841 micron [0.84 mm,
20 mesh] size.
<10 ppm (<1 ppm "sandfree” for reinjection) of particles and a maximum
velocity of 1.8 m/s. Filtered for maximum 841 micron 0.84 mm,
20 mesh] size. Any particulate that is not removed can potentially
clog components.
Notes:
Rev.: 3/22/2012
15Application not recommended.
1RGHVLJQ0D[LPXP
&ORVHG5HFLUFXODWLQJV\VWHPLVLGHQWLILHGE\Dclosed pressurized piping system.
5HFLUFXODWLQJRSHQZHOOVVKRXOGREVHUYHWKHRSHQUHFLUFXODWLQJGHVLJQFRQVLGHUDWLRQV
Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below
Scaling indexes should be calculated at 66°C for direct use and HWG applications, and at 32°C for indirect HX use.
A monitoring plan should be implemented.
The ClimateMaster Water Quality Table provides water quality requirements for ClimateMaster coaxial heat exchangers. When water properties are outside of those
requirements, an external secondary heat exchanger must be used to isolate the heat pump heat exchanger from the unsuitable water. Failure to do so will void the
warranty for the coaxial heat exchanger.
Manufacturer Manufacturer
16
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Electric water heaters are recommended. If a gas, propane, or
oil water heater is used, a second preheat tank must be installed
(Figure 15). If the electric water heater has only a single center
element, the dual tank system is recommended to insure a usable
entering water temperature for the HWG.
Typically a single tank of at least 52 gallons (235 liters) is used to
limit installation costs and space. However, a dual tank, as shown
in Figure 15, is the most effi cient system, providing the maximum
storage and temperate source water to the HWG.
It is always advisable to use water softening equipment on
domestic water systems to reduce the scaling potential and
lengthen equipment life. In extreme water conditions, it may be
necessary to avoid the use of the HWG option since the potential
cost of frequent maintenance may offset or exceed any savings.
Consult Table 3 for scaling potential tests.
Hot Water Generator
The HWG (Hot Water Generator) or desuperheater option
provides considerable operating cost savings by utilizing excess
heat energy from the heat pump to help satisfy domestic hot
water requirements. The HWG is active throughout the year,
providing virtually free hot water when the heat pump operates
in the cooling mode or hot water at the COP of the heat pump
during operation in the heating mode. Actual HWG water
heating capacities are provided in the appropriate heat pump
performance data.
Heat pumps equipped with the HWG option include a built-in
water to refrigerant heat exchanger that eliminates the need to
tie into the heat pump refrigerant circuit in the fi eld. The control
circuit and pump are also built in for residential equipment. Figure
14 shows a typical example of HWG water piping connections on
a unit with built-in circulating pump. This piping layout reduces
scaling potential.
The temperature set point of the HWG is fi eld selectable to 125°F
or 150°F . The 150°F set point allows more heat storage from
the HWG. For example, consider the amount of heat that can be
generated by the HWG when using the 125°F set point, versus
the amount of heat that can be generated by the HWG when
using the 150°F set point.
In a typical 50 gallon two-element electric water heater the lower
element should be turned down to 100°F, or the lowest setting,
to get the most from the HWG. The tank will eventually stratify
so that the lower 80% of the tank, or 40 gallons, becomes 100°F
(controlled by the lower element). The upper 20% of the tank, or
10 gallons, will be maintained at 125°F (controlled by the upper
element).
Using a 125°F set point, the HWG can heat the lower 40 gallons
of water from 100°F to 125°F, providing up to 8,330 btu’s of heat.
Using the 150°F set point, the HWG can heat the same 40 gallons
of water from 100°F to 150°F and the remaining 10 gallons of
water from 125°F to 150°F, providing a total of up to 18,743 btu’s
of heat, or more than twice as much heat as when using the
125°F set point.
This example ignored standby losses of the tank. When those
losses are considered the additional savings are even greater.
Figure 14: Typical HWG Installation
Figure 15: HWG Double Tank In stal la tion
WARNING!
WARNING!
A 150°F SETPOINT MAY LEAD TO
SCALDING OR BURNS. THE 150°F SET POINT MUST
ONLY BE USED ON SYSTEMS THAT EMPLOY AN
APPROVED ANTI-SCALD VALVE.
Hot Outlet
to home
Insulated water lines -
5/8” OD, 50 ft maximum (one way)
[16mm OD, 15 meters maximum]
Powered
Water
Heater
Upper
element to
120 - 130°F
[49 - 54°C]
Lower
element to
100 - 110°F
[38 - 43°C]
Shut-off
Valve #3
Shut Off
Valve #2
Field supplied 3/4’ brass nipple and ‘T’
Cold
Inlet
Shut Off
Valve #4
Shut Off
Valve #1
Insulated water lines - 5/8” OD, 50 ft maximum (one way)
[16mm OD, 15 meters maximum]
Upper element to 130°F [54°C]
(or owner preference)
Cold Inlet
Hot Outlet to
house
Powered
Water Heater
Cold Inlet from
Domestic supply
Hot Outlet
Unpowered
Water Heater
Field Supplied 3/4” brass nipple and “T”
Lower element to 120°F [49°C]
Shut-off
Valve #1
Shut-off
Valve #4
Shut-off
Valve #3
Shut Off
Valve #2
17
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Hot Water Generator
The microprocessor control monitors the refrigerant and
water temperatures to determine when to operate the HWG.
The HWG will operate any time the refrigerant temperature
is sufÄ ciently above the water temperature. Once the
HWG has satisÄ ed the water heating demand during a
heat pump run cycle, the controller will cycle the pump at
regular Intervals to determine if an additional HWG cycle
can be utilized. The microprocessor control Includes 3 DIP
switches, SW10 (HWG PUMP TEST), SW11 (HWG TEMP),
and SW12 (HWG STATUS).
SW10 HWG PUMP TEST. When this switch is in the “ON”
position, the HWG pump is forced to operate even if there
is no call for the HWG. This mode may be beneÄ cial to
assist in purging the system of air during Initial start up.
When SW10 is in the “OFF” position, the HWG will operate
normally. This switch is shipped from the factory in the
“OFF” (normal) position. NOTE; If left in the “On” position for
5 minutes, the pump control will revert to normal operation.
SW11 HWG TEMP. The control setpoint of the HWG can
be set to either of two temperatures, 125°F or 150°F. When
SW11 is in the “ON” position the HWG setpoint is 150°F.
When SW11 is in the “OFF” position the HWG setpoint is
ѥWARNING! ѥ
ѥWARNING! ѥ
WARNING!
UNDER NO CIRCUMSTANCES SHOULD
THE SENSORS BE DISCONNECTED OR REMOVED
AS FULL LOAD CONDITIONS CAN DRIVE HOT
WATER TANK TEMPERATURES FAR ABOVE SAFE
TEMPERATURE LEVELS IF SENSORS HAVE BEEN
DISCONNECTED OR REMOVED.
WARNING!
USING A 150°F SETPOINT ON THE
HWG WILL RESULT IN WATER TEMPERATURES
SUFFICIENT TO CAUSE SEVERE PHYSICAL INJURY
IN THE FORM OF SCALDING OR BURNS, EVEN
WHEN THE HOT WATER TANK TEMPERATURE
SETTING IS VISIBLY SET BELOW 150°F. THE 150°F
HWG SETPOINT MUST ONLY BE USED ON SYSTEMS
THAT EMPLOY AN APPROVED ANTI-SCALD VALVE
(PART NUMBER AVAS4) AT THE HOT WATER
STORAGE TANK WITH SUCH VALVE PROPERLY
SET TO CONTROL WATER TEMPERATURES
DISTRIBUTED TO ALL HOT WATER OUTLETS AT A
TEMPERATURE LEVEL THAT PREVENTS SCALDING
OR BURNS!
125°F. This switch Is shipped from the factory in the “OFF”
(125°F) position.
SW12 HWG STATUS. This switch controls operation of
the HWG. When SW12 is in the “ON” position the HWG is
disabled and will not operate. When SW12 is in the “OFF”
position the HWG is in the enabled mode and will operate
normally. This switch is shipped from the factory in the
“ON” (disabled) position. CAUTION: DO NOT PLACE THIS
SWITCH IN THE ENABLED POSITION UNITL THE HWG
PIPING IS CONNECTED, FILLED WITH WATER, AND
PURGED OR PUMP DAMAGE WILL OCCUR.
When the control is powered and the HWG pump output
is not active, the status LED (AN1) will be “On”. When the
HWG pump output is active for water temperature sampling
or HWG operation, the status LED will slowly Å ash (On 1
second, Off 1 second).
If the control has detected a fault, the status LED will Å ash a
numeric fault code as follows:
Hot Water Sensor Fault 1 Å ash
Compressor Discharge sensor fault 2 Å ashes
High Water Temperature (>160ºF) 3 Å ashes
Control Logic Error 4 Å ashes
Fault code Å ashes have a duration of 0.4 seconds with
a 3 second pause between fault codes. For example, a
“Compressor Discharge sensor fault” will be four Å ashes
0.4 seconds long, then a 3 second pause, then four Å ashes
again, etc.
C
H
M
WATER HEATER
CHECK VALVE
8” MAX
HOT WATER
TO HOUSE
ANTI-SCALD
VALVE
ANTI-SCALD
VALVE PIPING
CONNECTIONS
COLD WATER
SUPPLY
Installation
The HWG is controlled by two sensors and a microprocessor
control. One sensor is located on the compressor discharge
line to sense the discharge refrigerant temperature. The
other sensor is located on the HWG heat exchanger’s “Water
In” line to sense the potable water temperature.
18
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Warning! The HWG pump Is fully wired from the factory. Use
extreme caution when working around the microprocessor
control as it contains line voltage connections that presents
a shock hazard that can cause severe injury or death!
The heat pump, water piping, pump, and hot water tank should
be located where the ambient temperature does not fall below
50°F [10°C]. Keep water piping lengths at a minimum. DO NOT
use a one way length greater than 50 ft. (one way) [15 m]. See
Table 7 for recommended piping sizes and maximum lengths.
All installations must be in accordance with local codes. The
installer is responsible for knowing the local requirements, and
for performing the installation accordingly. DO NOT connect the
pump wiring until “Initial Start-Up” section, below. Powering the
pump before all installation steps are completed may damage the
pump.
Water Tank Preparation
1. Turn off power or fuel supply to the hot water tank.
2. Connect a hose to the drain valve on the water tank.
3. Shut off the cold water supply to the water tank.
4. Open the drain valve and open the pressure relief valve or a
hot water faucet to drain tank.
5. When using an existing tank, it should be fl ushed with cold
water after it is drained until the water leaving the drain hose
is clear and free of sediment.
6. Close all valves and remove the drain hose.
7. Install HWG water piping.
HWG Water Piping
1. Using at least 5/8” [16mm] O.D. copper, route and install the
water piping and valves as shown in Figures 14 or 15. Install
an approved anti-scald valve if the 150°F HWG setpoint is or
will be selected. An appropriate method must be employed
to purge air from the HWG piping. This may be accomplished
by fl ushing water through the HWG (as In Figures 14 and
15) or by Installing an air vent at the high point of the HWG
piping system.
2. Insulate all HWG water piping with no less than 3/8” [10mm]
wall closed cell insulation.
3. Open both shut off valves and make sure the tank drain valve
is closed.
Water Tank Refi ll
1. Close valve #4. Ensure that the HWG valves (valves #2 and
#3) are open. Open the cold water supply (valve #1) to fi ll the
tank through the HWG piping. This will purge air from the
HWG piping.
2. Open a hot water faucet to vent air from the system until
water fl ows from faucet; turn off faucet. Open valve #4.
3.
Depress the hot water tank pressure relief valve handle to
ensure that there is no air remaining in the tank.
4. Inspect all work for leaks.
5.
Before restoring power or fuel supply to the water heater,
adjust the temperature setting on the tank thermostat(s) to
insure maximum utilization of the heat available from the
refrigeration system and conserve the most energy. On tanks
with both upper and lower elements and thermostats, the
lower element should be turned down to 100°F [38°C] or
the lowest setting; the upper element should be adjusted to
120-130°F [49-54°C]. Depending upon the specifi c needs
of the customer, you may want to adjust the upper element
differently. On tanks with a single thermostat, a preheat tank
should be used (Fig 15).
6. Replace access cover(s) and restore power or
fuel supply.
Initial Start-Up
1. Make sure all valves in the HWG water circuit are
fully open.
2. Turn on the heat pump and allow it to run for
10-15 minutes.
3. Set SW12 to the “OFF” position (enabled) to engage the
HWG.
4. The HWG pump should not run if the compressor is not
running.
5. The temperature difference between the water entering and
leaving the HWG coil should be approximately 5-10°F [3-
6°C].
6. Allow the unit to operate for 20 to 30 minutes to insure that it
is functioning properly.
Hot Water Generator
Table 7: HWG Water Piping Sizes and Length
Unit
Nominal
Tonnage
Nominal
HWG Flow
(gpm)
1/2" Copper
(max length*) 3/4" Copper
(max length*)
1.5 0.6 50 -
2.0 0.8 50 -
2.5 1.0 50 -
3.0 1.2 50 -
3.5 1.4 50 -
4.0 1.6 45 50
5.0 2.0 25 50
6.0 2.4 10 50
*Maximum length is equivalent length (in feet) one way of type L copper.
19
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Electrical - Line Voltage
WARNING! CAUTION!
WARNING! To avoid possible injury or death due to electrical
shock, open the power supply disconnect switch and secure it
in an open position during installation.
CAUTION! Use only copper conductors for fi eld installed
electrical wiring. Unit terminals are not designed to accept other
types of conductors.
Table 4a: HT Series Electrical Data
All TT Units with Emerson ECM Fan Motor TT Units (ECM) Standard TT Units (ECM) with ClimaDry
Model
Compressor HWG
Pump
FLA
Ext
Loop
Pump
FLA
Fan
Motor
FLA
Total
Unit
FLA
Min
Circuit
Amps
Max
Fuse/
HACR
(2)
ClimaDry
Pump
FLA
Total
Unit
FLA
Min
Circuit
Amps
Max/
Fuse
HACR
(2)
RLA LRA Qty
026 11.7 58.3 1 0.5 1.7 3.9 16.1 19.0 30 0.8 16.9 19.8 30
038 15.3 83.0 1 0.5 1.7 3.9 19.7 23.5 35 0.8 20.5 24.3 35
049 21.2 104.0 1 0.5 1.7 6.9 28.6 33.9 50 1.1 29.7 35.0 50
064 27.1 152.9 1 0.5 1.7 6.9 34.5 41.2 60 1.1 35.6 42.3 60
072 29.7 179.2 1 0.5 1.7 6.9 37.1 44.5 70 1.1 38.2 45.6 70
Rated Voltage of 208-230/60/1 Min/Max Voltage of 197/254
HACR circuit breaker in USA only All fuses Class RK-5
HT HT HT
024
036
048
060
070
20
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Electrical - Line Voltage
Electrical - Line Voltage
All fi eld installed wiring, including electrical ground, must comply
with the National Electrical Code as well as all applicable local
codes. Refer to the unit electrical data for fuse sizes. Consult
wiring diagram for fi eld connections that must be made by the
installing (or electrical) contractor.
All fi nal electrical connections must be made with a length of
fl exible conduit to minimize vibration and sound transmission to
the building.
General Line Voltage Wiring
Be sure the available power is the same voltage and phase shown
on the unit serial plate. Line and low voltage wiring must be done
in accordance with local codes or the National Electric Code,
whichever is applicable.
WARNING!
CAUTION!
Unit Power Supply
(see electrical table for wire
and breaker size)
Connect the blue wire to:
H for High speed fan
M for Medium speed fan
L for Low speed fan
Medium is factory setting
Fan Motor
Figure 17: PSC Motor Speed Selection
WARNING! Disconnect electrical power source to prevent
injury or death from electrical shock.
CAUTION! Use only copper conductors for fi eld installed
electrical wiring. Unit terminals are not designed to accept
other types of conductors.
Blower Speed Selection – Units with PSC Motor
PSC (Permanent Split Capacitor) blower fan speed can be
changed by moving the blue wire on the fan motor terminal
block to the desired speed as shown in Figure 17. Optional ECM
motor speeds are set via low voltage controls (see “ECM Blower
Control”). Most units are shipped on the medium speed tap.
Consult specifi cations catalog for specifi c unit airfl ow tables.
Typical unit design delivers rated airfl ow at nominal static (0.15 in.
w.g. [37Pa]) on medium speed and rated airfl ow at a higher static
(0.4 to 0.5 in. w.g. [100 to 125 Pa]) on high speed for applications
where higher static is required. Low speed will deliver
approximately 85% of rated airfl ow at 0.10 in. w.g. [25 Pa].
Power Connection
Line voltage connection is made by connecting the incoming line
voltage wires to the “L” side of the contactor as shown in Figure
16. Consult Tables 4a through 4b for correct fuse size.
208 Volt Operation
All residential 208-230 Volt units are factory wired for 230 Volt
operation. The transformer may be switched to the 208V tap as
illustrated on the wiring diagram by switching the red (208V) and
the orange (230V) wires at the contactor terminal.
Special Note for AHRI Testing: To achieve rated airfl ow for
AHRI testing purposes on all PSC products, it is necessary to
change the fan speed to “HI” speed. When the heat pump has
experienced less than 100 operational hours and the coil has
not had suffi cient time to be “seasoned”, it is necessary to clean
the coil with a mild surfactant such as Calgon to remove the oils
left by manufacturing processes and enable the condensate to
properly “sheet” off of the coil.
HWG Wiring (Split Units Only)
The hot water generator pump power wiring is disabled at the
factory to prevent operating the HWG pump “dry.” After all HWG
piping is completed and air purged from the water piping, the
pump power wires should be applied to terminals on the HWG
power block PB2 as shown in the unit wiring diagram. This
connection can also serve as a HWG disable when servicing the
unit.
Figure 16: HT Single Phase Line Voltage
Field Wiring
21
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Electrical - Low Voltage Wiring
Low voltage Ä eld wiring for units with ECM fan
Low voltage
Ä eld wiring
for units with
PSC FAN
(ECM board
will not be
present)
Figure 19: FP1 Limit Setting
CXM PCB
JW3-FP1
jumper should
be clipped for
low temperature
operation
Figure 18: TT/TS Low Voltage Field Wiring
Low Water Temperature Cutout Selection
The CXM control allows the Ä eld selection of low water (or
water-antifreeze solution) temperature limit by clipping jumper
JW3, which changes the sensing temperature associated with
thermistor FP1. Note that the FP1 thermistor is located on
the refrigerant line between the coaxial heat exchanger and
expansion device (TXV). Therefore, FP1 is sensing refrigerant
temperature, not water temperature, which is a better indicatio
n
of how water Å ow rate/temperature is affecting the refrigeration
circuit.
The factory setting for FP1 is for systems using water (30°F
[-1.1°C] refrigerant temperature). In low water temperature
(extended range) applications with antifreeze (most ground
loops), jumper JW3 should be clipped as shown in Figure
19 to change the setting to 10°F [-12.2°C] refrigerant
temperature, a more suitable temperature when using
an antifreeze solution. All residential units include water/
refrigerant circuit insulation to prevent internal condensation,
which is required when operating with entering water
temperatures below 59°F [15°C].
Thermostat Connections
The thermostat should be wired directly to the CXM board
(units with PSC fan). Units with optional ECM motor include
factory wiring from the CXM board to the ECM interface
board. Thermostat wiring for these units should be connected
to the ECM interface board. Figure 18 shows wiring for TT/
TS units with PSC or optional ECM motor. See “Electrical –
Thermostat” for speciÄ c terminal connections.
HT Low Voltage Field Wiring
HT
22
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Electrical - Low Voltage Wiring
Figure 20: Accessory Wiring
Accessory Connections
A terminal paralleling the compressor contactor coil has been
provided on the CXM control. Terminal “A” is designed to control
accessory devices, such as water valves. Note: This terminal
should be used only with 24 Volt signals and not line voltage.
Terminal “A” is energized with the compressor contactor. See
Figure 20 or the specifi c unit wiring diagram for details.
Water Solenoid Valves
An external solenoid valve(s) should be used on ground water
installations to shut off fl ow to the unit when the compressor
is not operating. A slow closing valve may be required to help
reduce water hammer. Figure 20 shows typical wiring for a
24VAC external solenoid valve. Figures 21 and 22 illustrate
typical slow closing water control valve wiring for Taco 500 series
(Manufacturer P/N AVM...) and Taco SBV series valves. Slow
closing valves take approximately 60 seconds to open (very little
water will fl ow before 45 seconds). Once fully open, an end switch
allows the compressor to be energized. Only relay or triac based
electronic thermostats should be used with slow closing valves.
When wired as shown, the slow closing valve will operate properly
with the following notations:
1. The valve will remain open during a unit lockout.
2. The valve will draw approximately 25-35 VA through the “Y”
signal of the thermostat. Note: This valve can overheat the
anticipator of an electromechanical thermostat. Therefore,
only relay or triac based thermostats should be used.
Two-stage Units
HT two-stage units should be designed with two parallel valves
for ground water applications to limit water use during fi rst stage
operation. For example, at 1.5 gpm/ ton [2.0 l/m per kW], a 048
unit requires 6 gpm [23 l/m] for full load (2nd stage) operation,
but only 4 gpm [15 l/m] during 1st stage operation. Since the unit
will operate on fi rst stage 80-90% of the time, signifi cant water
savings can be realized by using two parallel solenoid valves with
two fl ow regulators. In the example above, stage one solenoid
would be installed with a 4 gpm [15 l/m] fl ow regulator on the
outlet, while stage two would utilize a 2 gpm [8 l/m] fl ow regulator.
When stage one is operating, the second solenoid valve will be
closed. When stage two is operating, both valves will be open,
allowing full load fl ow rate.
Figure 23 illustrates piping for two-stage solenoid valves. Review
fi gures 20-22 for wiring of stage one valve. Stage two valve should
be wired between terminal “Y2” (ECM board) and terminal “C.”
Note: When EWT is below 50°F [10°C], a minimum of 2 gpm per
ton (2.6 l/m per kW) is required.
Figure 21: AVM Valve Wiring
C
C
Thermostat
Y1
123
Y1
AVM
Taco Valve
Heater Switch
Figure 22: Taco SBV Valve Wiring
From Water Source
IN
OUT
NOTE: Shut-off valves, strainers and
other required components not shown.
Solenoid
Valve Flow
Regulator
To Discharge
Stage 1
Stage 2
Figure 23: Two-Stage Piping
23
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Electrical - Thermostat Wiring
Manufacturer
Manufacturer
Units with CXM or DXM board and ECM fan motor, utilizing ECM dehumidifi cation mode
Notes:
1) ECM dehumidifi cation mode slows down fan speed in the cooling mode when
dehumidifi cation output from thermostat is active. Normal heating and cooling fan
speeds are not affected.
2) ECM board DIP switch SW9 must be in dehumid. mode for ECM dehumidifi cation mode.
24
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
ECM Blower Control
The ECM fan is controlled by an interface board that converts
thermostat inputs and fi eld selectable CFM settings to signals
used by the ECM motor controller. Units manufactured before
July 2005 have version I (P/N 69243707). Units manufactured
after July 2005 have version II (P/N 17B0019N01). Fan speeds
are selected with jumpers for version I or via a nine position DIP
switch for version II. To take full advantage of the ECM motor
features, a multi-stage thermostat should be used (2-stage
heat/2-stage cool or 3-stage heat/2-stage cool).
HFC-410A packaged units built after May 2009 have ECM
controller version III (P/N 17B0034N01). This controller includes
logic and a relay to control the HWG functions.
Note: Power must be off to the unit for at least three seconds
before the ECM motor will recognize a speed change. The motor
will recognize a change in the CFM Adjust or dehumidifi cation
mode settings while the unit is powered.
There are four different airfl ow settings from lowest airfl ow rate
(speed tap 1) to the highest airfl ow rate (speed tap 4). The charts
below indicate settings for both versions of the ECM interface
board, followed by detailed information for each setting.
Cooling Settings: The cooling setting determines the cooling
(normal) CFM for all units with ECM motor. Cooling (normal)
setting is used when the unit is not in dehumidifi cation mode.
Tap 1 is the lowest CFM setting, while tap 4 is the highest CFM
setting. To avoid air coil freeze-up, tap 1 may not
be used if the dehumidifi cation mode is selected. Consult
submittal data or specifi cations catalog for the specifi c unit series
and model to correlate speed tap setting to airfl ow in CFM.
Heating Settings: The heating setting determines the heating
CFM for HT units. Tap 1 is the lowest CFM setting, while tap 4 is
the highest CFM setting. Consult submittal data or specifi cations
catalog for the specifi c unit series and model to correlate speed
tap setting to airfl ow in CFM.
Auxiliary/Emergency Heat Settings: The auxiliary/emergency
heat setting determines the CFM when the unit is in auxiliary
heat or emergency heat mode. This setting is used for residential
units with internal electric heat. When auxiliary electric heat is
energized (i.e. compressor and electric heat), the greater of the
auxiliary/emergency or heating setting will be used. A “G” (fan)
signal must be present from the thermostat for electric heat to
operate. Consult the submittal data or specifi cations catalog for
the specifi c unit series and model to correlate speed tap setting to
airfl ow in CFM.
CFM Adjust Settings: The CFM adjust setting allows four
selections. The NORM setting is the factory default position. The
+ or – settings adjust the airfl ow by +/- 15%. The +/- settings are
used to “fi ne tune” airfl ow adjustments. The TEST setting runs the
ECM motor at 70% torque, which causes the motor to operate like
a standard PSC motor, and disables the CFM counter.
Dehumidifi cation Mode Settings: The dehumidifi cation mode
setting provides fi eld selection of humidity control. When
operating in the normal mode, the cooling airfl ow settings
are determined by the cooling tap setting above. When
dehumidifi cation is enabled there is a reduction in airfl ow
in cooling to increase the moisture removal of the heat pump.
Consult submittal data or specifi cations catalog for the specifi c
unit series and model to correlate speed tap to airfl ow in CFM.
The dehumidifi cation mode can be enabled in two ways.
1. Constant Dehumidifi cation Mode: When the dehumidifi cation
mode is selected (via DIP switch or jumper setting), the ECM
motor will operate with a multiplier applied to the cooling
CFM settings (approx. 20-25% lower airfl ow). Any time the
unit is running in the cooling mode, it will operate at the lower
airfl ow to improve latent capacity. The “DEHUM” LED will be
illuminated at all times. Heating airfl ow is not affected. NOTE:
Do not select dehumidifi cation mode if cooling setting is tap 1.
2. Automatic (Humidistat-controlled) Dehumidifi cation Mode:
When the dehumidifi cation mode is selected (via DIP switch
or jumper setting) AND a humidistat is connected to terminal
DH (version II) or HUM (version I), the cooling airfl ow will
only be reduced when the humidistat senses that additional
dehumidifi cation is required. The DH (or HUM) terminal is
reverse logic. Therefore, a humidistat (not dehumidistat) is
required. The “DEHUM” LED will be illuminated only when
the humidistat is calling for dehumidifi cation mode. Heating
airfl ow is not affected. NOTE: Do not select dehumidifi cation
mode if cooling setting is tap 1.
25
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
ECM Blower Control
Table 5: ECM Board Tap Settings
Y
GGGGR
W
O
Y2
Y1
G
RCY2 Y1 GOWCRDH AL1 AAAL1
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SW9
OFF ON
G
DEHUM
CFM
TB1
J1
S1
Thermostat
Input LEDs
CFM Counter
1 flash per 100 CFM
ECM Motor
Low Voltage
Connector
1/4" Spade
Connections
to CXM or
DXM Board
Thermostat
Connections
Dehumidification
LED
Fan Speed Selection DIP Switch
J01
AL
AL
A
GY1Y2OW1EMC R
G
Y1
Y2 OW1EMNC C R Hum
3
2
14
3
2
1
43
3
2
1
2
2
1
4
3
2
1
4
5678910
L
LED's
TB01
CFM
Dehumid
Norm
Norm
Test
(–)
(+)
CFM
Adjust
Aux
CFM HP
CFM
Delay
1/4" Spade
Connections
to CXM or
DXM Board
Thermostat
Input LEDs
CFM Counter
1 flash per 100C
F
ECM Motor
Low Voltage
Connector
Dehumidification
LED
Fan Speed Selection Jumpers
Thermostat
Connections
Figure 26a: ECM Version II Interface Layout Figure 26b: ECM Version I Interface Layout
Figure 26c: ECM Version III Interface Layout
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Cooling settings: TT, TS Units Heating settings: TT, TS Units Aux/Emerg Heat settings: TT, TS Units*
*Residential Units
Version I Version I Version I
69243707 69243707 69243707
Tap HP CFM Tap DELAY Tap AUX CFM
Setting Jumper SW1 SW2 Setting Jumper SW3 SW4 Setting Jumper SW5 SW6
1 1 ON ON 1 1 ON ON 1 1 ON ON
2 2 ON OFF 2 2 ON OFF 2 2 ON OFF
3 3 OFF ON 3 3 OFF ON 3 3 OFF ON
4 4 OFF OFF 4 4 OFF OFF 4 4 OFF OFF
CFM Adjust settings: TT, TS Units Dehum Mode settings: TT, TS Units
Version I Version I
69243707 69243707
Tap CFM Adj Tap Dehumid
Setting Jumper SW7 SW8 Setting Jumper
TEST 1 ON ON NORM pins 1,2
-2 ON OFF Dehumid pins 2,3
+3OFFON
NORM 4 OFF OFF
DIP Switch
Version II and III
(17B0019N01 & 17B0034N01)
DIP Switch DIP Switch
ON
OFF
DIP Switch DIP Switch
SW9
Version II and III
(17B0019N01 & 17B0034N01) Version II and III
(17B0019N01 & 17B0034N01)
Version II and III
(17B0019N01 & 17B0034N01)
Version II and III
(17B0019N01 & 17B0034N01)
HT Units HT Units HT Units
HT Units HT Units
26
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
HT Series ECM Blower Performance Data
Airfl ow in CFM with wet coil and clean air fi lter Residential
Units Only
Model Max
ESP
(in. wg)
Fan
Motor
(hp) Range Cooling Mode Dehumid
Mode Heating Mode Fan
Only
Mode
Aux/
Emerg
Mode
Stg 1 Stg 2 Stg 1 Stg 2 Stg 1 Stg 2
026 1.0 1/2
Default 700 525 550 425 750 600 350 850
Maximum 1000 800 800 600 1000 850 1000 1000
Minimum 600 450 550 400 600 450 300 700
038 0.9 1/2
Default 1050 800 850 650 1100 850 550 1350
Maximum 1500 1100 1200 900 1500 1100 1500 1500
Minimum 900 600 825 550 900 600 450 1350
049 1.0 1
Default 1400 1050 1100 850 1500 1150 700 1500
Maximum 2000 1500 1600 1200 2000 1500 2000 2000
Minimum 1200 900 1100 825 1200 900 600 1350
064 0.7 1
Default 1750 1300 1400 1050 1875 1450 875 1875
Maximum 2300 1900 2000 1500 2300 1900 2300 2300
Minimum 1500 1100 1375 1000 1500 1100 750 1500
072 0.7 1
Default 1900 1450 1650 1250 2000 1650 950 2000
Maximum 2300 2200 2000 1800 2300 2200 2300 2300
Minimum 1800 1350 1650 1250 1800 1350 900 1800
During Auxiliary operation (residential units only) the CFM will run at the higher if the heating (delay jumper) or AUX settings
Airfl ow is controlled within +/- 5% up to Max ESP shown with wet coil and standard 1” fi berglass fi lter
Do not select Dehumidifi cation mode if HP CFM is on setting 1
All units AHRI/ISO/ASHRAE 13256-1 rated HP (Cooling) Delay (Heating) CFM Setting 3
Note: See the ECM Blower Control section for information on setting taps.
024
036
048
060
070
27
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
CXM Control
For detailed control information, see CXM Application, Operation
and Maintenance (AOM) manual (part #97B0003N12).
Field Selectable Inputs
Test mode: Test mode allows the service technician to check
the operation of the control in a timely manner. By momentarily
shorting the test terminals, the CXM control enters a 20 minute
test mode period in which all time delays are sped up 15 times.
Upon entering test mode, the status LED will fl ash a code
representing the last fault. For diagnostic ease at the thermostat,
the alarm relay will also cycle during test mode. The alarm relay
will cycle on and off similar to the status LED to indicate a code
representing the last fault, at the thermostat. Test mode can be
exited by shorting the test terminals for 3 seconds.
Retry Mode: If the control is attempting a retry of a fault,
the status LED will slow fl ash (slow fl ash = one fl ash every 2
seconds) to indicate the control is in the process of retrying.
Field Confi guration Options
Note: In the following fi eld confi guration options, jumper wires
should be clipped ONLY when power is removed from the CXM
control.
Water coil low temperature limit setting: Jumper 3 (JW3-FP1 Low
Temp) provides fi eld selection of temperature
limit setting for FP1 of 30°F or 10°F [-1°F or -12°C] (refrigerant
temperature).
Not Clipped = 30°F [-1°C]. Clipped = 10°F [-12°C].
Air coil low temperature limit setting: Jumper 2 (JW2-FP2 Low
Temp) provides fi eld selection of temperature limit setting for
FP2 of 30°F or 10°F [-1°F or -12°C] (refrigerant temperature).
Note: This jumper should only be clipped under extenuating
circumstances, as recommended by
the factory.
Not Clipped = 30°F [-1°C]. Clipped = 10°F [-12°C].
Alarm relay setting: Jumper 1 (JW1-AL2 Dry) provides fi eld
selection of the alarm relay terminal AL2 to be jumpered to 24VAC
or to be a dry contact (no connection).
Not Clipped = AL2 connected to R. Clipped = AL2 dry contact
(no connection).
DIP Switches
Note: In the following fi eld confi guration options, DIP switches
should only be changed when power is removed from the CXM
control.
DIP switch 1: Unit Performance Sentinel Disable - provides fi eld
selection to disable the UPS feature.
On = Enabled. Off = Disabled.
DIP switch 2: Stage 2 Selection - provides selection of whether
compressor has an “on” delay. If set to stage 2, the compressor
will have a 3 second delay before energizing. Also, if set for stage
2, the alarm relay will NOT cycle during test mode.
On = Stage 1. Off = Stage 2
DIP switch 3: Not Used.
DIP switch 4: DDC Output at EH2 - provides selection for DDC
operation. If set to “DDC Output at EH2,” the EH2 terminal will
continuously output the last fault code of the controller. If set to
“EH2 normal,” EH2 will operate as standard electric heat output.
On = EH2 Normal. Off = DDC Output at EH2.
NOTE: Some CXM controls only have a 2 position DIP switch
package. If this is the case, this option can be selected by
clipping the jumper which is in position 4
of SW1.
Jumper not clipped = EH2 Normal. Jumper clipped = DDC
Output at EH2.
DIP switch 5: Factory Setting - Normal position is “On.” Do not
change selection unless instructed to do so by the factory.
CXM Controls
Short test pins
together to enter Test
Mode and speed-up
timing and delays for
20 minutes.
Figure 27: Test Mode Pins
Table 6a: CXM LED And Alarm Relay Operations
Description of Operation LED Alarm Relay
Normal Mode On Open
Normal Mode with UPS Warning On Cycle (closed 5 sec., Open 25 sec.)
CXM is non-functional Off Open
Fault Retry Slow Flash Open
Lockout Fast Flash Closed
Over/Under Voltage Shutdown Slow Flash Open (Closed after 15 minutes)
Test Mode - No fault in memory Flashing Code 1 Cycling Code 1
Test Mode - HP Fault in memory Flashing Code 2 Cycling Code 2
Test Mode - LP Fault in memory Flashing Code 3 Cycling Code 3
Test Mode - FP1 Fault in memory Flashing Code 4 Cycling Code 4
Test Mode - FP2 Fault in memory Flashing Code 5 Cycling Code 5
Test Mode - CO Fault in memory Flashing Code 6 Cycling Code 6
Test Mode - Over/Under
shutdown in memory Flashing Code 7 Cycling Code 7
Test Mode - UPS in memory Flashing Code 8 Cycling Code 8
Test Mode - Swapped Thermistor Flashing Code 9 Cycling Code 9
-Flash code 2 = 2 quick fl ashes, 10 second pause, 2 quick
fl ashes, 10 second pause, etc.
-On pulse 1/3 second; off pulse 1/3 second
28
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
CXM Controls
Safety Features – CXM Control
The safety features below are provided to protect the compressor,
heat exchangers, wiring and other components from damage
caused by operation outside of design conditions.
Anti-short cycle protection: The control features a 5 minute anti-
short cycle protection for the compressor.
Note: The 5 minute anti-short cycle also occurs at power up.
Random start: The control features a random start upon power up
of 5-80 seconds.
Fault Retry: In Fault Retry mode, the Status LED begins slowly
fl ashing to signal that the control is trying to recover from a fault
input. The control will stage off the outputs and then “try again”
to satisfy the thermostat input call. Once the thermostat input call
is satisfi ed, the control will continue on as if no fault occurred. If
3 consecutive faults occur without satisfying the thermostat input
call, the control will go into “lockout” mode. The last fault causing
the lockout will be stored in memory and can be viewed by going
into test mode. Note: FP1/FP2 faults are factory set at only one
try.
Lockout: In lockout mode, the status LED will begin fast fl ashing.
The compressor relay is turned off immediately. Lockout mode can
be “soft” reset by turning off the thermostat (or satisfying the call).
A “soft” reset keeps the fault in memory but resets the control. A
“hard” reset (disconnecting power to the control) resets the control
and erases fault memory.
Lockout with emergency heat: While in lockout mode, if W becomes
active (CXM), emergency heat mode will occur.
High pressure switch: When the high pressure switch opens due
to high refrigerant pressures, the compressor relay is de-energized
immediately since the high pressure switch is in series with the
compressor contactor coil. The high pressure fault recognition is
immediate (does not delay for 30 continuous seconds before de-
energizing the compressor).
High pressure lockout code = 2
Example: 2 quick fl ashes, 10 sec pause, 2 quick fl ashes, 10 sec.
pause, etc.
Low pressure switch: The low pressure switch must be open and
remain open for 30 continuous seconds during “on” cycle to be
recognized as a low pressure fault. If the low pressure switch is open
for 30 seconds prior to compressor power up it will be considered a
low pressure (loss of charge) fault. The low pressure switch input is
bypassed for the initial 60 seconds of a compressor run cycle.
Low pressure lockout code = 3
Water coil low temperature (FP1): The FP1 thermistor temperature
must be below the selected low temperature limit setting for 30
continuous seconds during a compressor run cycle to be recognized
as a FP1 fault. The FP1 input is bypassed for the initial 120 seconds
of a compressor run cycle. FP1 is set at the factory for one try.
Therefore, the control will go into lockout mode once the FP1 fault
has occurred.
FP1 lockout code = 4
Air coil low temperature (FP2): The FP2 thermistor temperature must
be below the selected low temperature limit setting for 30 continuous
seconds during a compressor run cycle to be recognized as a FP2
fault. The FP2 input is bypassed for the initial 120 seconds of a
compressor run cycle. FP2 is set at the factory for one try. Therefore,
the control will go into lockout mode once the FP2 fault has occurred.
FP2 lockout code = 5
Condensate overfl ow: The condensate overfl ow sensor must
sense overfl ow level for 30 continuous seconds to be recognized
as a CO fault. Condensate overfl ow will be monitored at all times.
CO lockout code = 6
Over/under voltage shutdown: An over/under voltage condition
exists when the control voltage is outside the range of 18VAC to
31.5VAC. Over/under voltage shut down is a self-resetting safety.
If the voltage comes back within range for at least 0.5 seconds,
normal operation is restored. This is not considered a fault or
lockout. If the CXM is in over/under voltage shutdown for 15
minutes, the alarm relay will close.
Over/under voltage shut down code = 7
Unit Performance Sentinel-UPS (patent pending): The UPS feature
indicates when the heat pump is operating ineffi ciently. A UPS
condition exists when:
a) In heating mode with compressor energized, FP2 is greater
than 125°F [52°C] for 30 continuous seconds, or:
b) In cooling mode with compressor energized, FP1 is greater
than 125°F [52°C] for 30 continuous seconds, or:
c) I
n cooling mode with compressor energized, FP2 is less than
40°F [4.5°C] for 30 continuous seconds. If a UPS condition
occurs, the control will immediately go to UPS warning. The
status LED will remain on as if the control is in normal mode.
Outputs of the control, excluding LED and alarm relay, will NOT
be affected by UPS. The UPS condition cannot occur during a
compressor off cycle. During UPS warning, the alarm relay will
cycle on and off. The cycle rate will be “on” for 5 seconds, “off”
for 25 seconds, “on” for 5 seconds, “off” for 25 seconds, etc.
UPS warning code = 8
Swapped FP1/FP2 thermistors: During test mode, the control
monitors to see if the FP1 and FP2 thermistors are in the
appropriate places. If the control is in test mode, the control will
lockout, with code 9, after 30 seconds if:
a) The compressor is on in the cooling mode and the FP1 sensor
is colder than the FP2 sensor, or:
b) The compressor is on in the heating mode and the FP2 sensor
is colder than the FP1 sensor.
Swapped FP1/FP2 thermistor code = 9.
Diagnostic Features
The LED on the CXM board advises the technician of the current
status of the CXM control. The LED can display either the current
CXM mode or the last fault in memory if in test mode. If there is no
fault in memory, the LED will fl ash Code 1 (when in test mode).
29
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
CXM Control Start-up Operation
The control will not operate until all inputs and safety controls
are checked for normal conditions. The compressor will have a
5 minute anti-short cycle delay at power-up. The fi rst time after
power-up that there is a call for compressor, the compressor will
follow a 5 to 80 second random start delay. After the random start
delay and anti-short cycle delay, the compressor relay will be
energized. On all subsequent compressor calls, the random start
delay is omitted.
CXM Controls
T-stat signal TT TS TS
ECM fan ECM fan PSC fan
G Fan only Fan only Fan only
G, Y or Y1 Stage 1 heating1Stage 1 heating3Stage 1 heating5
G, Y1, Y2 Stage 2 heating1Stage 2 heating3Stage 2 heating5
G, Y1, Y2, W Stage 3 heating1Stage 3 heating3N/A
G, W Emergency heat Emergency heat Emergency heat
G, Y or Y1, O Stage 1 cooling2Stage 1 cooling4Cooling6
G, Y1, Y2, O Stage 2 cooling2Stage 2 cooling4N/A
1 Stage 1 = 1st stage compressor, 1st stage fan operation
Stage 2 = 2nd stage compressor, 2nd stage fan operation
Stage 3 = 2nd stage compressor, auxiliary electric heat, 2nd
or 3rd stage fan operation (depending on fan settings)
2 Stage 1 = 1st stage compressor, 1st stage fan operation, reversing valve
Stage 2 = 2nd stage compressor, 2nd stage fan operation, reversing valve
3 Stage 1 = compressor, 1st stage fan operation
Stage 2 = compressor, 2nd stage fan operation
Stage 3 = compressor, auxiliary electric heat, 2nd or 3rd stage fan operation (depending on fan settings)
4 Stage 1 = compressor, 1st stage fan operation, reversing valve
Stage 2 = compressor, 2nd stage fan operation, reversing valve
5 Stage 1 = compressor, fan
Stage 2 = compressor, auxiliary electric heat, fan
6 Cooling = compressor, fan, reversing valve
HT
Table 6b: Unit Operation
30
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
CXM Controls
CXM Thermostat Details
Thermostat Compatibility - Most all heat pump thermostats can
be used with the CXM control. However Heat/Cool stats are
NOT compatible with the CXM.
Anticipation Leakage Current - Maximum leakage current for
"Y" is 50 mA and for "W" is 20mA. Triacs can be used if leakage
current is less than above. Thermostats with anticipators can be
used if anticipation current is less than that specifi ed above.
Thermostat Signals -
• "Y" and "W" have a 1 second recognition time when
being activated or being removed.
• "O" and "G" are direct pass through signals but are
monitored by the micro processor.
• "R" and "C" are from the transformer.
• "AL1" and "AL2" originate from the alarm relay.
• "A" is paralleled with the compressor output for use
with well water solenoid valves.
• The "Y" 1/4" quick connect is a connection point to the
"Y" input terminal P1 for factory use. This "Y" terminal
can be used to drive panel mounted relays such as the
loop pump relay.
Table 7: Nominal resistance at various temperatures
Temp (ºC) Temp (ºF) Resistance
(kOhm) Temp (ºC) Temp (ºF) Resistance
(kOhm)
-17.8 0.0 85.34 55 131.0 2.99
-17.5 0.5 84.00 56 132.8 2.88
-16.9 1.5 81.38 57 134.6 2.77
-12 10.4 61.70 58 136.4 2.67
-11 12.2 58.40 59 138.2 2.58
-10 14.0 55.30 60 140.0 2.49
-9 15.8 52.38 61 141.8 2.40
-8 17.6 49.64 62 143.6 2.32
-7 19.4 47.05 63 145.4 2.23
-6 21.2 44.61 64 147.2 2.16
-5 23.0 42.32 65 149.0 2.08
-4 24.8 40.15 66 150.8 2.01
-3 26.6 38.11 67 152.6 1.94
-2 28.4 36.18 68 154.4 1.88
-1 30.2 34.37 69 156.2 1.81
0 32.0 32.65 70 158.0 1.75
1 33.8 31.03 71 159.8 1.69
2 35.6 29.50 72 161.6 1.64
3 37.4 28.05 73 163.4 1.58
4 39.2 26.69 74 165.2 1.53
5 41.0 25.39 75 167.0 1.48
6 42.8 24.17 76 168.8 1.43
7 44.6 23.02 77 170.6 1.39
8 46.4 21.92 78 172.4 1.34
9 48.2 20.88 79 174.2 1.30
10 50.0 19.90 80 176.0 1.26
11 51.8 18.97 81 177.8 1.22
12 53.6 18.09 82 179.6 1.18
13 55.4 17.26 83 181.4 1.14
14 57.2 16.46 84 183.2 1.10
15 59.0 15.71 85 185.0 1.07
16 60.8 15.00 86 186.8 1.04
17 62.6 14.32 87 188.6 1.01
18 64.4 13.68 88 190.4 0.97
19 66.2 13.07 89 192.2 0.94
20 68.0 12.49 90 194.0 0.92
21 69.8 11.94 91 195.8 0.89
22 71.6 11.42 92 197.6 0.86
23 73.4 10.92 93 199.4 0.84
24 75.2 10.45 94 201.2 0.81
25 77.0 10.00 95 203.0 0.79
26 78.8 9.57 96 204.8 0.76
27 80.6 9.16 97 206.6 0.74
28 82.4 8.78 98 208.4 0.72
29 84.2 8.41 99 210.2 0.70
30 86.0 8.06 100 212.0 0.68
31 87.8 7.72 101 213.8 0.66
32 89.6 7.40 102 215.6 0.64
33 91.4 7.10 103 217.4 0.62
34 93.2 6.81 104 219.2 0.60
35 95.0 6.53 105 221.0 0.59
36 96.8 6.27 106 222.8 0.57
37 98.6 6.01 107 224.6 0.55
38 100.4 5.77 108 226.4 0.54
39 102.2 5.54 109 228.2 0.52
40 104.0 5.33 110 230.0 0.51
41 105.8 5.12 111 231.8 0.50
42 107.6 4.92 112 233.6 0.48
43 109.4 4.72 113 235.4 0.47
44 111.2 4.54 114 237.2 0.46
45 113.0 4.37 115 239.0 0.44
46 114.8 4.20 116 240.8 0.43
47 116.6 4.04 117 242.6 0.42
48 118.4 3.89 118 244.4 0.41
49 120.2 3.74 119 246.2 0.40
50 122.0 3.60 120 248.0 0.39
51 123.8 3.47 121 249.8 0.38
52 125.6 3.34 122 251.6 0.37
53 127.4 3.22 123 253.4 0.36
54 129.2 3.10
31
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Unit Commissioning And Operating Conditions
Table 8a: Building Operating Limits
Operating Limits
Environment – Units are designed for indoor installation only. Never install units in areas subject to freezing or where humidity levels could
cause cabinet condensation (such as unconditioned spaces subject to 100% outside air).
Power Supply – A voltage variation of +/– 10% of nameplate utilization voltage is acceptable.
Determination of operating limits is dependent primarily upon three factors: 1) return air temperature. 2) water temperature, and 3)
ambient temperature. When any one of these factors is at minimum or maximum levels, the other two factors should be at normal levels
to insure proper unit operation. Extreme variations in temperature and humidity and/or corrosive water or air will adversely affect unit
performance, reliability, and service life. Consult Table 8a for operating limits.
Commissioning Conditions
Consult Table 8b for the particular model. Starting conditions vary depending upon model and are based upon the following notes:
Notes:
1. Conditions in Table 8b are not normal or continuous operating conditions. Minimum/maximum limits are start-up conditions to bring
the building space up to occupancy temperatures. Units are not designed to operate under these conditions on a regular basis.
2. Voltage utilization range complies with AHRI Standard 110.
Table 8b: Building Commissioning Limits
Cooling Heating
m
its
m
bient air, DB 45ºF [7ºC] 39ºF [4ºC]
a
mbient air, DB 80.6ºF [27ºC] 68ºF [20ºC]
m
bient air, DB 130ºF [54ºC] 85ºF [29ºC]
t
ering air, DB/WB 60/45ºF [16/7ºC] 40ºF [4.4ºC]
e
ntering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC]
n
tering air, DB/WB 100/75ºF [38/24ºC] 80ºF [27ºC]
L
imits
t
ering water 30ºF [-1ºC] 20ºF [-6.7ºC]
entering water 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC]
n
tering water 120ºF [49ºC] 90ºF [32ºC]
TT
p
erating Limits
l
Water Flow 1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
Cooling Heating
Air Limits
Min. ambient air, DB 45ºF [7ºC] 39ºF [4ºC]
Rated ambient air, DB 80.6ºF [27ºC] 68ºF [20ºC]
Max. ambient air, DB 130ºF [54ºC] 85ºF [29ºC]
Min. entering air, DB/WB 65/45ºF [18/7ºC] 50ºF [10ºC]
Rated entering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC]
Max. entering air, DB/WB 100/75ºF [38/24ºC] 80ºF [27ºC]
Water Limits
Min. entering water 20ºF [-6.7ºC] 20ºF [-6.7ºC]
Normal entering water 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC]
Max. entering water 120ºF [49ºC] 120ºF [49ºC]
Unit
Operating Limits
Normal Water Flow 1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
70/50ºF Reheat
HT
Cooling Heating
Air Limits
Min. ambient air, DB 45ºF [7ºC] 39ºF [4ºC]
Rated ambient air, DB 80.6ºF [27ºC] 68ºF [20ºC]
Max. ambient air, DB 130ºF [54ºC] 85ºF [29ºC]
Min. entering air, DB/WB 60ºF [16ºC] 40ºF [4.5ºC]
Rated entering air, DB/WB 80.6/66.2ºF [27/19ºC] 68ºF [20ºC]
Max. entering air, DB/WB 110/83ºF [43/28ºC] 80ºF [27ºC]
Water Limits
Min. entering water 20ºF [-6.7ºC] 20ºF [-6.7ºC]
Normal entering water 50-110ºF [10-43ºC] 30-70ºF [-1 to 21ºC]
Max. entering water 120ºF [49ºC] 120ºF [49ºC]
Unit
Commissioning Limits
Normal Water Flow 1.5 to 3.0 gpm / ton
[1.6 to 3.2 l/m per kW]
HT
32
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Unit Start-Up and Operating Conditions
Unit and System Checkout
BEFORE POWERING SYSTEM, please check the following:
UNIT CHECKOUT
Balancing/shutoff valves: Insure that all isolation valves are
open and water control valves are wired.
Line voltage and wiring: Verify that voltage is within an
acceptable range for the unit and wiring and fuses/breakers
are properly sized. Verify that low voltage wiring is complete.
Unit control transformer: Insure that transformer has the
properly selected voltage tap. Residential 208-230V units are
factory wired for 230V operation unless specifi ed otherwise.
Loop/water piping is complete and purged of air. Water/
piping is clean.
Antifreeze has been added if necessary.
Entering water and air: Insure that entering water and air
temperatures are within operating limits of Table 8.
Low water temperature cutout: Verify that low water
temperature cut-out on the CXM/CXM control is properly set.
Unit fan: Manually rotate fan to verify free rotation and insure
that blower wheel is secured to the motor shaft. Be sure to
remove any shipping supports if needed. DO NOT oil motors
upon start-up. Fan motors are pre-oiled at the factory.
Check unit fan speed selection and compare to design
requirements.
Condensate line: Verify that condensate line is open and
properly pitched toward drain.
HWG pump is disconnected unless piping is completed and
air has been purged from the system.
Water fl ow balancing: Record inlet and outlet water
temperatures for each heat pump upon startup. This check
can eliminate nuisance trip outs and high velocity water fl ow
that could erode heat exchangers.
Unit air coil and fi lters: Insure that fi lter is clean and
accessible. Clean air coil of all manufacturing oils.
Unit controls: Verify that CXM fi eld selection options are
properly set. Low voltage wiring is complete.
Blower speed is set.
Service/access panels are in place.
SYSTEM CHECKOUT
System water temperature: Check water temperature for
proper range and also verify heating and cooling set points
for proper operation.
System pH: Check and adjust water pH if necessary to
maintain a level between 6 and 8.5. Proper pH promotes
longevity of hoses and fi ttings (see Table 3).
System fl ushing: Verify that all air is purged from the system.
Air in the system can cause poor operation or system
corrosion. Water used in the system must be potable quality
initially and clean of dirt, piping slag, and strong chemical
cleaning agents. Some antifreeze solutions may require
distilled water.
Flow Controller pump(s): Verify that the pump(s) is wired,
purged of air, and in operating condition.
System controls: Verify that system controls function and
operate in the proper sequence.
Low water temperature cutout: Verify that low water
temperature cut-out controls are set properly
(FP1 - JW3).
Miscellaneous: Note any questionable aspects of
the installation.
Unit Start-up Procedure
1. Turn the thermostat fan position to “ON.” Blower
should start.
2. Balance air fl ow at registers.
3. Adjust all valves to their full open position. Turn on the line
power to all heat pump units.
4. Room temperature should be within the minimum-maximum
ranges of Table 8b. During start-up checks, loop water
temperature entering the heat pump should be between 30°F
[-1°C] and 95°F [35°C].
5.
Two factors determine the operating limits of water source
heat pumps, (a) return air temperature, and (b) water
temperature. When any one of these factors is at a minimum
or maximum level, the other factor must be at normal level to
insure proper unit operation.
a. Adjust the unit thermostat to the warmest setting. Place
the thermostat mode switch in the “COOL” position.
Slowly reduce thermostat setting until the compressor
activates.
b. Check for cool air delivery at the unit grille within a few
minutes after the unit has begun to operate.
Note: Units have a fi ve minute time delay in the control
circuit that can be bypassed on the CXM/CXM control
board as shown below in Figure 27. See controls
description for details.
c. Verify that the compressor is on and that the water fl ow
rate is correct by measuring pressure drop through the
heat exchanger using the P/T plugs and comparing to
Tables 9a through 9b.
d. Check the elevation and cleanliness of the condensate
lines. Dripping may be a sign of a blocked line. Check
that the condensate trap is fi lled to provide a water seal.
e. Refer to Table 10. Check the temperature of both entering
and leaving water. If temperature is within range, proceed
with the test. If temperature is outside of the operating
range, check refrigerant pressures and compare to Tables
11 through 12. Verify correct water fl ow by comparing unit
CAUTION!
CAUTION!
CAUTION! Verify that ALL water control valves are open
and allow water fl ow prior to engaging the compressor.
Freezing of the coax or water lines can permanently
damage the heat pump.
CAUTION! To avoid equipment damage, DO NOT
leave system fi lled in a building without heat during the
winter unless antifreeze is added to the water loop. Heat
exchangers never fully drain by themselves and will
freeze unless winterized with antifreeze.
33
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Unit Start-Up Procedure
pressure drop across the heat exchanger versus the data
in Tables 9a through 9b. Heat of rejection (HR) can be
calculated and compared to catalog data capacity pages.
The formula for HR for systems with water is as follows:
HR = TD x GPM x 500, where TD is the temperature
difference between the entering and leaving water,
and GPM is the fl ow rate in U.S. GPM, determined by
comparing the pressure drop across the heat exchanger
to Tables 9a through 9b.
f.
Check air temperature drop across the air coil when
compressor is operating. Air temperature drop should be
between 15°F and 25°F [8°C and 14°C].
g. Turn thermostat to “OFF” position. A hissing noise
indicates proper functioning of the reversing valve.
6. Allow fi ve (5) minutes between tests for pressure to equalize
before beginning heating test.
a. Adjust the thermostat to the lowest setting. Place the
thermostat mode switch in the “HEAT” position.
b. Slowly raise the thermostat to a higher temperature until
the compressor activates.
c. Check for warm air delivery within a few minutes after the
unit has begun to operate.
d. Refer to Table 10. Check the temperature of both entering
and leaving water. If temperature is within range, proceed
with the test. If temperature is outside of the operating
range, check refrigerant pressures and compare to Tables
11 through 12. Verify correct water fl ow by comparing
unit pressure drop across the heat exchanger versus the
data in Tables 9a through 9b. Heat of extraction (HE) can
be calculated and compared to submittal data capacity
pages. The formula for HE for systems with water is as
follows:
HE = TD x GPM x 500, where TD is the temperature
difference between the entering and leaving water,
and GPM is the fl ow rate in U.S. GPM, determined by
comparing the pressure drop across the heat exchanger to
Tables 9a through 9b.
e.
Check air temperature rise across the air coil when
compressor is operating. Air temperature rise should be
between 20°F and 30°F [11°C and 17°C].
f. Check for vibration, noise, and water leaks.
7. If unit fails to operate, perform troubleshooting analysis
(see troubleshooting section). If the check described fails
to reveal the problem and the unit still does not operate,
contact a trained service technician to insure proper
diagnosis and repair of the equipment.
8. When testing is complete, set system to maintain desired
comfort level.
9. BE CERTAIN TO FILL OUT AND RETURN ALL WARRANTY
REGISTRATION PAPERWORK.
Note: If performance during any mode appears abnormal, refer
to the CXM section or troubleshooting section of this manual.
To obtain maximum performance, the air coil should be cleaned
before start-up. A 10% solution of dishwasher detergent and
water is recommended.
WARNING!
CAUTION!
WARNING! When the disconnect switch is closed, high
voltage is present in some areas of the electrical panel.
Exercise caution when working with energized equipment.
CAUTION! Verify that ALL water control valves are open
and allow water fl ow prior to engaging the compressor.
Freezing of the coax or water lines can permanently
damage the heat pump.
34
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Unit Operating Conditions
Table 10: Water Temperature Change Through Heat Exchanger
 

Antifreeze Type Antifreeze
%
Cooling Heating WPD
Corr. Fct.
EWT 30°F
EWT 90°F EWT 30°F
Total Cap Sens Cap Power Htg Cap Power
Water 0 1.000 1.000 1.000 1.000 1.000 1.000
Propylene Glycol
5 0.995 0.995 1.003 0.989 0.997 1.070
15 0.986 0.986 1.009 0.968 0.990 1.210
25 0.978 0.978 1.014 0.947 0.983 1.360
Methanol
5 0.997 0.997 1.002 0.989 0.997 1.070
15 0.990 0.990 1.007 0.968 0.990 1.160
25 0.982 0.982 1.012 0.949 0.984 1.220
Ethanol
5 0.998 0.998 1.002 0.981 0.994 1.140
15 0.994 0.994 1.005 0.944 0.983 1.300
25 0.986 0.986 1.009 0.917 0.974 1.360
Ethylene Glycol
5 0.998 0.998 1.002 0.993 0.998 1.040
15 0.994 0.994 1.004 0.980 0.994 1.120
25 0.988 0.988 1.008 0.966 0.990 1.200
Antifreeze Correction Table
Table 9a: HT Coax Water Pressure Drop
Model GPM Pressure Drop (psi)
30°F 50°F 70°F 90°F
026
2.3
3.0
3.4
4.5
6.0
0.7
1.1
1.3
2.0
3.1
0.4
0.7
0.9
1.4
2.3
0.4
0.6
0.8
1.2
1.9
0.5
0.7
0.8
1.2
1.8
038
3.0
4.5
6.0
6.8
9.0
1.5
2.6
3.8
4.5
6.9
0.9
1.7
2.7
3.2
5.2
0.8
1.5
2.3
2.7
4.4
0.9
1.5
2.2
2.6
4.1
049
4.5
6.0
6.8
9.0
12.0
1.5
2.6
3.8
4.5
6.9
0.6
1.1
1.4
2.5
4.2
0.5
1.0
1.3
2.3
3.8
0.3
0.9
1.2
2.2
3.5
064
6.0
7.5
9.0
11.3
12.0
15.0
0.9
1.7
2.5
3.7
4.1
6.1
0.2
0.9
1.5
2.6
3.0
4.7
0.2
0.7
1.3
2.3
2.6
4.1
0.3
0.8
1.4
2.3
2.6
4.0
072
7.0
8.5
10.5
12.8
14.0
17.0
1.4
2.2
3.3
4.6
5.4
7.6
0.7
1.3
2.2
3.4
4.1
6.0
0.5
1.1
1.9
3.0
3.6
5.4
0.7
1.2
2.0
2.9
3.5
5.2
024
036
048
060
070
35
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Unit Operating Conditions
TE026 Full Load Cooling - without HWG active Full Load Heating - without HWG active
Entering
Water
Temp
°F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG Superheat Subcooling
Water
Temp
Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG Superheat Subcooling
Water
Temp
Drop
°F
Air
Temp
Rise °F
DB
30* 1.5
2.25
3
72-83
75-85
78-88
273-293
275-295
277-297
6-11
6-11
6-11
3-8
3-8
3-8
5.9-7.9
4.2-6.2
2.7-4.7
16-22
17-23
18-24
50 1.5
2.25
3
128-138
128-138
128-138
186-206
172-192
158-178
18-23
18-23
18-23
8-13
6-11
6-11
16.3-18.3
12.1-14.1
7.8-9.8
19-25
20-26
20-26
102-112
106-116
110-120
302-322
303-323
305-325
8-12
8-12
8-12
6-11
6-11
6-11
8.9-10.9
6.7-8.7
4.5-6.5
22-28
23-29
23-29
70 1.5
2.25
3
136-146
136-146
136-146
281-301
267-287
253-273
7-12
7-12
7-12
7-12
5-10
4-9
15.7-17.7
11.6-13.6
7.6-9.6
19-25
19-25
19-25
128-138
134-144
141-151
330-350
332-352
334-354
10-15
10-15
10-15
8-13
8-13
8-13
11.3-13.3
8.5-10.5
5.8-7.8
27-34
28-35
28-35
90 1.5
2.25
3
139-149
139-149
139-149
368-388
354-374
340-360
6-11
6-11
6-11
7-12
5-10
5-10
14.9-16.9
11-13
7.2-9.2
18-24
18-24
18-24
162-172
166-176
171-181
367-387
372-392
377-397
14-19
15-20
17-22
10-15
10-15
10-15
14.4-16.4
10.8-12.8
7.1-9.1
33-41
34-42
34-42
110 1.5
2.25
3
143-153
143-153
143-153
465-485
450-470
433-453
6-11
6-11
6-11
7-12
5-10
5-10
13.9-15.9
10.2-12.2
6.5-8.5
17-23
17-23
17-23
*Based on 15% Methanol antifreeze solution
HT024
TE038 Full Load Cooling - without HWG active Full Load Heating - without HWG active
Entering
Water
Temp
°F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG Superheat Subcooling
Water
Temp
Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG Superheat Subcooling
Water
Temp
Drop
°F
Air
Temp
Rise °F
DB
30* 1.5
2.25
3
69-79
73-83
76-86
293-313
297-317
300-320
7-12
7-12
7-12
14-19
14-19
14-19
8.9-10.9
6.7-8.7
4.5-6.5
17-23
18-24
19-25
50 1.5
2.25
3
129-139
128-138
128-138
225-245
211-231
197-217
15-20
15-20
15-20
10-15
9-14
9-14
21.9-23.9
16.1-18.1
10.3-12.3
18-24
19-25
19-25
96-106
100-110
105-115
322-342
326-346
331-351
10-15
10-15
10-15
17-22
17-22
17-22
12.2-14.2
9.3-11.3
6.4-8.4
23-29
24-30
24-30
70 1.5
2.25
3
136-146
135-145
135-145
302-322
283-303
265-285
9-14
9-14
9-14
13-18
12-17
12-17
21.5-23.5
15.8-17.8
10-12
18-24
19-25
19-25
123-133
129-139
135-145
352-372
358-378
364-384
11-16
11-16
11-16
19-24
19-24
19-24
15-17
11.6-13.6
8.2-10.2
28-35
29-36
30-37
90 1.5
2.25
3
140-150
140-150
140-150
390-410
369-389
349-369
7-12
8-13
8-13
13-18
8-13
8-13
20.5-22.5
14.9-16.9
9.3-11.3
17-23
17-23
17-23
157-167
169-179
181-191
390-410
399-419
408-428
13-18
13-18
14-19
18-23
16.5-21.5
15-20
21-23
15.5-17.5
10.5-12.5
36-44
37-45
39-47
110 1.5
2.25
3
145-155
145-155
145-155
488-508
467-487
447-467
7-12
8-13
8-13
13-18
8-13
8-13
19-21
14-16
9-11
17-23
17-23
17-23
*Based on 15% Methanol antifreeze solution
HT036
TE049 Full Load Cooling - without HWG active Full Load Heating - without HWG active
Entering
Water
Temp
°F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG Superheat Subcooling
Water
Temp
Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG Superheat Subcooling
Water
Temp
Drop
°F
Air
Temp
Rise °F
DB
30* 1.5
2.25
3
66-76
69-79
72-82
286-306
289-309
292-312
7-12
7-12
7-12
8-13
9-14
9-14
8-10
6-8
4-6
18-24
19-25
19-25
50 1.5
2.25
3
125-135
123-133
122-132
242-262
224-244
205-225
13-18
13-18
14-19
10-15
9-14
7-12
20.9-22.9
15.6-17.6
10.2-12.2
19-25
19-25
19-25
93-103
98-108
103-113
314-334
320-340
326-346
8-13
8-13
8-13
10-15
10-15
10-15
11.5-13.5
8.7-10.7
5.9-7.9
23-29
24-30
25-31
70 1.5
2.25
3
133-143
132-142
131-141
310-330
290-310
270-290
8-13
8-13
9-14
8-13
7-12
5-10
20.5-22.5
15.2-17.2
9.9-11.9
19-25
19-25
19-25
123-133
130-140
137-147
344-364
354-374
361-381
9-14
9-14
9-14
9-14
9-14
9-14
15-17
11.5-13.5
7.9-9.9
28-35
29-36
30-37
90 1.5
2.25
3
138-148
137-147
136-146
396-416
374-394
352-372
7-12
7-12
7-12
7-12
6-11
4-9
19.2-21.2
14.3-16.3
9.3-11.3
18-24
18-24
18-24
165-175
175-185
185-195
390-410
401-421
413-433
13-18
15-20
17-22
8-13
8-13
8-13
19.6-21.6
15-17
10.3-12.3
37-45
38-46
39-47
110 1.5
2.25
3
144-154
143-153
142-152
497-517
472-492
447-467
7-12
7-12
7-12
5-10
4-9
3-8
18-20
13.3-15.3
8.5-10.5
17-23
17-23
17-23
*Based on 15% Methanol antifreeze solution
HT048
Table 11: HT Series Typical Unit Operating Pressures and Temperatures
36
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Unit Operating Conditions
TE064 Full Load Cooling - without HWG active Full Load Heating - without HWG active
Entering
Water
Temp
°F
Water
Flow
GPM/ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG Superheat Subcooling
Water
Temp
Rise
°F
Air Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG Superheat Subcooling
Water
Temp
Drop
°F
Air
Temp
Rise °F
DB
30* 1.5
2.25
3
66-76
69-79
72-82
282-302
285-305
289-309
10-16
10-16
10-16
9-14
9-14
10-15
8-10
6-8
4-6
19-25
19-25
20-26
50 1.5
2.25
3
128-138
126-136
125-135
238-258
222-242
205-225
16-21
21-26
26-31
14-19
13-18
12-17
20.5-22.5
14.9-16.9
9.2-11.2
21-27
21-27
21-27
90-100
95-105
99-109
310-330
313-333
316-336
11-17
11-17
11-17
12-17
12-17
12-17
11.3-13.3
8.5-10.5
5.7-7.7
24-30
25-31
26-32
70 1.5
2.25
3
135-145
134-144
133-143
315-335
296-316
276-296
10-15
12-17
15-20
14-19
13-18
11-16
21-23
15.5-17.5
10-12
22-28
22-28
22-28
115-125
120-130
126-136
337-357
341-361
345-365
12-18
12-18
12-18
14-19
14-19
15-20
14-16
10.6-12.6
7.3-9.3
28-35
29-36
30-37
90 1.5
2.25
3
139-149
138-148
138-148
408-428
386-406
364-384
10-15
10-15
10-15
15-20
13-18
11-16
20.1-22.1
14.8-16.8
9.5-11.5
21-27
21-27
21-27
157-167
161-171
166-176
390-410
394-414
398-418
15-20
15-20
15-20
14-19
14-19
15-20
18.2-20.2
13.9-15.9
9.6-11.6
37-45
38-46
39-47
110 1.5
2.25
3
144-154
143-153
142-152
515-535
493-513
469-489
8-13
8-13
8-13
14-19
13-18
12-17
19-21
14-16
9-11
20-26
20-26
20-26
*Based on 15% Methanol antifreeze solution
HT060
TE072 Full Load Cooling - without HWG active Full Load Heating - without HWG active
Entering
Water
Temp
°F
Water
Flow
GPM/
ton
Suction
Pressure
PSIG
Discharge
Pressure
PSIG Superheat Subcooling
Water
Temp
Rise
°F
Air
Temp
Drop °F
DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG Superheat Subcooling
Water
Temp
Drop
°F
Air
Temp
Rise
°F DB
30* 1.5
2.25
3
61-71
65-75
68-78
292-312
296-316
300-320
11-16
11-16
10-15
13-18
14-19
15-20
7.2-9.2
5.4-7.4
3.5-5.5
19-25
20-26
21-27
50 1.5
2.25
3
131-141
130-140
129-139
210-230
205-225
200-220
10-15
11-16
13-18
12-17
12-17
12-17
18.5-20.5
14-16
9.5-11.5
22-28
23-29
24-30
89-99
98-108
106-116
327-347
337-357
348-368
10-15
10-15
10-15
19-24
14-19
9-14
10.9-12.9
8.3-10.3
5.7-7.7
26-32
28-34
30-36
70 1.5
2.25
3
135-145
131-141
128-138
300-320
295-315
290-310
10-15
11-16
13-18
15-20
14-19
14-19
17.6-19.6
13.8-15.8
10-12
23-29
23-29
23-29
119-129
132-142
144-154
365-385
380-400
395-415
10-15
10-15
10-15
21-26
16-21
11-16
14.7-16.7
11.3-13.3
7.9-9.9
33-39
36-42
38-44
90 1.5
2.25
3
139-149
137-147
135-145
390-410
370-390
350-370
10-15
10-15
10-15
16-21
14-19
13-18
16.7-18.7
12.6-14.6
8.5-10.5
22-28
22-28
22-28
162-172
172-182
182-192
418-438
430-450
444-464
10-15
10-15
11-16
19-24
19-24
19-24
19.4-21.4
14.7-16.7
10.1-12.1
43-49
45-51
47-53
110 1.5
2.25
3
145-155
145-155
144-154
490-510
470-490
452-472
10-15
10-15
9-14
16-21
14-19
13-18
15.9-17.9
11.7-13.7
7.4-9
20-27
20-27
20-27
*Based on 15% Methanol antifreeze solution
HT070
Table 11: HT Series Typical Unit Operating Pressures and Temperatures: Continued
37
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Performance Data — HT 024 - Full Load
850 CFM Nominal (ISO Rated) Air ow Cooling, 950 CFM Nominal (ISO Rated) Air ow Heating Performance capacities shown in thousands of Btuh
EWT
°F
Cooling - EAT 80/67°F Heating - EAT 70°F
GPM
WPD CFM TC SC kWEER HRLWT HWC
GPM
WPD CFM HCkWCOP HELAT LWT HWC
PSI FT PSI FT
20 Operation not recommended 6.0 3.7 8.6 820 16.4 1.49 3.2 11.3 88.5 16.2 1.6
6.0 3.7 8.6 950 16.6 1.44 3.4 11.7 86.2 3.9 1.5
30
3.0 1.1 2.5 730 30.2 20.2 0.95 31.9 33.4 22.7 0.8 3.0 1.1 2.5 820 17.8 1.51 3.5 12.7 90.1 21.6 1.8
3.0 1.1 2.5 850 30.7 21.8 0.98 31.3 34.0 22.7 0.8 3.0 1.1 2.5 950 18.1 1.47 3.6 13.1 87.6 8.7 1.8
4.5 2.0 4.6 730 30.2 20.2 0.88 34.2 33.2 15.1 0.7 4.5 2.0 4.6 820 18.6 1.53 3.6 13.4 91.0 24.1 1.9
4.5 2.0 4.6 850 30.7 21.7 0.92 33.6 33.9 15.1 0.7 4.5 2.0 4.6 950 18.9 1.48 3.7 13.8 88.4 6.1 1.9
6.0 3.1 7.1 730 30.1 20.1 0.86 35.2 33.0 11.2 0.6 6.0 3.1 7.1 820 19.0 1.53 3.6 13.8 91.5 25.4 2.0
6.0 3.1 7.1 850 30.7 21.6 0.89 34.6 33.7 11.2 0.7 6.0 3.1 7.1 950 19.3 1.49 3.8 14.2 88.8 4.7 1.9
40
3.0 0.9 2.0 730 29.6 20.1 1.04 28.4 33.2 22.5 1.1 3.0 0.9 2.0 820 20.4 1.56 3.8 15.0 93.0 30.0 2.2
3.0 0.9 2.0 850 30.1 21.6 1.08 27.9 33.8 22.5 1.1 3.0 0.9 2.0 950 20.7 1.51 4.0 15.5 90.1 10.3 2.1
4.5 1.6 3.8 730 30.1 20.2 0.97 31.0 33.4 15.1 0.9 4.5 1.6 3.8 820 21.3 1.57 4.0 16.0 94.1 32.9 2.3
4.5 1.6 3.8 850 30.6 21.8 1.00 30.5 34.0 15.1 0.9 4.5 1.6 3.8 950 21.7 1.53 4.2 16.5 91.1 7.3 2.3
6.0 2.6 6.0 730 30.2 20.2 0.93 32.3 33.4 11.3 0.8 6.0 2.6 6.0 820 21.9 1.58 4.0 16.5 94.7 34.5 2.4
6.0 2.6 6.0 850 30.7 21.8 0.97 31.7 34.0 11.3 0.8 6.0 2.6 6.0 950 22.2 1.53 4.2 17.0 91.6 5.7 2.3
50
3.0 0.7 1.6 730 28.7 19.7 1.15 24.9 32.7 22.2 1.4 3.0 0.7 1.6 820 23.1 1.60 4.2 17.6 96.0 38.3 2.6
3.0 0.7 1.6 850 29.2 21.2 1.20 24.4 33.3 22.2 1.5 3.0 0.7 1.6 950 23.4 1.55 4.4 18.1 92.8 12.1 2.5
4.5 1.4 3.2 730 29.4 20.0 1.07 27.5 33.1 15.0 1.2 4.5 1.4 3.2 820 24.3 1.62 4.4 18.7 97.4 41.7 2.7
4.5 1.4 3.2 850 29.9 21.5 1.11 27.0 33.7 15.0 1.2 4.5 1.4 3.2 950 24.6 1.57 4.6 19.3 94.0 8.6 2.6
6.0 2.3 5.2 730 29.7 20.1 1.03 28.9 33.2 11.3 1.0 6.0 2.3 5.2 820 24.9 1.64 4.5 19.3 98.1 43.6 2.8
6.0 2.3 5.2 850 30.2 21.6 1.07 28.3 33.9 11.3 1.1 6.0 2.3 5.2 950 25.3 1.59 4.7 19.9 94.7 6.6 2.7
60
3.0 0.7 1.5 730 27.5 19.2 1.28 21.5 31.9 21.7 1.9 3.0 0.7 1.5 820 25.9 1.65 4.6 20.2 99.2 46.5 2.9
3.0 0.7 1.5 850 28.0 20.7 1.33 21.1 32.5 21.7 1.9 3.0 0.7 1.5 950 26.3 1.60 4.8 20.8 95.6 13.9 2.8
4.5 1.3 2.9 730 28.4 19.6 1.19 24.0 32.5 14.7 1.5 4.5 1.3 2.9 820 27.3 1.68 4.8 21.6 100.8 50.4 3.1
4.5 1.3 2.9 850 28.9 21.1 1.23 23.5 33.1 14.7 1.6 4.5 1.3 2.9 950 27.7 1.63 5.0 22.2 97.0 9.9 3.0
6.0 2.0 4.7 730 28.8 19.8 1.14 25.3 32.7 11.1 1.4 6.0 2.0 4.7 820 28.1 1.69 4.9 22.3 101.7 52.6 3.2
6.0 2.0 4.7 850 29.3 21.3 1.18 24.8 33.4 11.1 1.4 6.0 2.0 4.7 950 28.5 1.64 5.1 22.9 97.8 7.6 3.1
70
3.0 0.6 1.5 730 26.1 18.7 1.42 18.4 31.0 21.1 2.4 3.0 0.6 1.5 820 28.8 1.70 4.9 22.9 102.5 54.7 3.3
3.0 0.6 1.5 850 26.6 20.1 1.47 18.0 31.6 21.1 2.4 3.0 0.6 1.5 950 29.2 1.65 5.2 23.6 98.5 15.7 3.2
4.5 1.2 2.7 730 27.1 19.1 1.32 20.6 31.6 14.3 2.0 4.5 1.2 2.7 820 30.4 1.73 5.1 24.4 104.3 59.1 3.5
4.5 1.2 2.7 850 27.6 20.5 1.37 20.2 32.3 14.3 2.0 4.5 1.2 2.7 950 30.8 1.68 5.4 25.1 100.0 11.2 3.4
6.0 1.9 4.4 730 27.6 19.3 1.27 21.8 32.0 10.9 1.8 6.0 1.9 4.4 820 31.2 1.75 5.2 25.3 105.3 61.6 3.6
6.0 1.9 4.4 850 28.1 20.7 1.31 21.4 32.6 10.9 1.9 6.0 1.9 4.4 950 31.7 1.70 5.5 25.9 100.9 8.6 3.5
80
3.0 0.7 1.5 730 24.6 18.0 1.58 15.6 30.0 20.4 3.0 3.0 0.7 1.5 820 31.6 1.76 5.3 25.6 105.7 62.9 3.6
3.0 0.7 1.5 850 25.0 19.4 1.64 15.3 30.6 20.4 3.0 3.0 0.7 1.5 950 32.1 1.70 5.5 26.3 101.3 17.5 3.5
4.5 1.2 2.7 730 25.7 18.5 1.47 17.5 30.7 13.9 2.5 4.5 1.2 2.7 820 33.4 1.79 5.5 27.3 107.7 67.9 3.8
4.5 1.2 2.7 850 26.1 19.9 1.52 17.2 31.3 13.9 2.6 4.5 1.2 2.7 950 33.9 1.74 5.7 28.0 103.0 12.4 3.7
6.0 1.8 4.2 730 26.2 18.7 1.41 18.5 31.0 10.6 2.3 6.0 1.8 4.2 820 34.3 1.81 5.6 28.2 108.8 70.6 3.9
6.0 1.8 4.2 850 26.7 20.1 1.46 18.2 31.7 10.6 2.4 6.0 1.8 4.2 950 34.9 1.76 5.8 28.9 104.0 9.6 3.8
90
3.0 0.7 1.6 730 23.0 17.4 1.76 13.1 29.0 19.8 3.6 3.0 0.7 1.6 820 34.4 1.81 5.6 28.2 108.9 71.2 3.9
3.0 0.7 1.6 850 24.5 19.2 1.70 14.5 30.3 19.8 3.3 3.0 0.7 1.6 950 35.0 1.76 5.8 29.0 104.1 19.3 3.8
4.5 1.2 2.7 730 24.1 17.8 1.64 14.7 29.7 13.5 3.2 4.5 1.2 2.7 820 36.3 1.86 5.7 30.0 111.0 76.7 4.2
4.5 1.2 2.7 850 24.5 19.2 1.70 14.5 30.3 13.5 3.3 4.5 1.2 2.7 950 36.9 1.80 6.0 30.7 105.9 13.7 4.0
6.0 1.8 4.1 730 24.6 18.0 1.58 15.6 30.0 10.2 3.0 6.0 1.8 4.1 820 37.3 1.88 5.8 30.9 112.1 79.7 4.3
6.0 1.8 4.1 850 25.1 19.4 1.63 15.3 30.6 10.2 3.0 6.0 1.8 4.1 950 37.9 1.82 6.1 31.6 106.9 10.5 4.2
100
3.0 0.7 1.6 730 21.5 16.9 1.95 11.0 28.1 19.2 4.4
Operation not recommended
3.0 0.7 1.6 850 21.8 18.1 2.02 10.8 28.7 19.2 4.5
4.5 1.2 2.7 730 22.5 17.2 1.82 12.3 28.7 13.0 3.9
4.5 1.2 2.7 850 22.9 18.5 1.89 12.1 29.3 13.0 4.0
6.0 1.8 4.1 730 23.0 17.4 1.76 13.1 29.0 9.9 3.7
6.0 1.8 4.1 850 23.4 18.7 1.82 12.8 29.6 9.9 3.7
110
3.0 0.7 1.5 730 20.0 16.4 2.17 9.2 27.4 18.7 5.3
3.0 0.7 1.5 850 20.3 17.7 2.25 9.0 28.0 18.7 5.4
4.5 1.1 2.6 730 20.9 16.7 2.03 10.3 27.8 12.6 4.7
4.5 1.1 2.6 850 21.3 17.9 2.10 10.1 28.5 12.6 4.8
6.0 1.7 4.0 730 21.4 16.8 1.96 10.9 28.1 9.6 4.5
6.0 1.7 4.0 850 21.8 18.1 2.03 10.7 28.7 9.6 4.5
120
3.0 0.5 1.2 730 18.7 16.2 2.41 7.7 26.9 18.3 6.3
3.0 0.5 1.2 850 19.0 17.4 2.50 7.6 27.5 18.3 6.4
4.5 1.0 2.4 730 19.5 16.3 2.26 8.6 27.2 12.3 5.6
4.5 1.0 2.4 850 19.8 17.5 2.34 8.5 27.8 12.3 5.8
6.0 1.7 3.9 730 19.9 16.4 2.18 9.1 27.3 9.3 5.3
6.0 1.7 3.9 850 20.2 17.6 2.26 8.9 28.0 9.3 5.5
Interpolation is permissible; extrapolation is not. Operation below 40°F EWT is based upon a 15% methanol antifreeze solution.
All entering air conditions are 80°F DB and 67°F WB in cooling, and 70°F DB in heating. Operation below 60°F EWT requires optional insulated water/refrigerant circuit.
AHRI/ISO certi ed conditions are 80.6°F DB and 66.2°F WB in cooling and 68°F DB in heating. See performance correction tables for operating conditions other than those listed above.
Table does not re ect fan or pump power corrections for AHRI/ISO conditions. For operation in the shaded areas, please see the Performance Data Selection Notes.
All performance is based upon the lower voltage of dual voltage rated units.
38
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Performance Data — HT 036 - Full Load
Operation not recommended
1250 CFM Nominal (ISO Rated) Air ow Cooling, 1250 CFM Nominal (ISO Rated) Air ow Heating Performance capacities shown in thousands of Btuh
EWT
°F
Cooling - EAT 80/67°F Heating - EAT 70°F
GPM
WPD CFM TC SC kWEER HRLWT HWC
GPM
WPD CFM HCkWCOP HELAT LWT HWC
PSI FT PSI FT
20 Operation not recommended 9.0 8.3 19.1 1080 25.6 2.09 3.6 18.5 91.9 15.9 2.1
9.0 8.3 19.1 1250 26.0 2.02 3.8 19.1 89.2 4.2 2.1
30
4.5 2.6 6.0 1080 44.8 27.6 1.44 31.1 49.7 22.5 1.1 4.5 2.6 6.0 1080 27.9 2.12 3.9 20.7 93.9 20.8 2.4
4.5 2.6 6.0 1250 45.6 29.7 1.49 30.5 50.6 22.5 1.1 4.5 2.6 6.0 1250 28.3 2.05 4.0 21.3 91.0 9.5 2.4
6.8 4.5 10.5 1080 44.2 27.4 1.39 31.8 48.9 14.8 0.9 6.8 4.5 10.5 1080 29.2 2.14 4.0 21.9 95.1 23.5 2.6
6.8 4.5 10.5 1250 44.9 29.5 1.44 31.2 49.9 14.8 0.9 6.8 4.5 10.5 1250 29.7 2.07 4.2 22.6 92.0 6.7 2.5
9.0 6.9 16.0 1080 43.6 27.3 1.38 31.7 48.3 10.9 0.8 9.0 6.9 16.0 1080 30.0 2.15 4.1 22.6 95.7 25.0 2.7
9.0 6.9 16.0 1250 44.4 29.3 1.43 31.1 49.3 10.9 0.8 9.0 6.9 16.0 1250 30.4 2.08 4.3 23.3 92.5 5.2 2.6
40
4.5 2.0 4.7 1080 44.7 27.6 1.54 28.9 49.9 22.6 1.4 4.5 2.0 4.7 1080 31.9 2.18 4.3 24.4 97.3 29.1 2.9
4.5 2.0 4.7 1250 45.4 29.6 1.60 28.4 50.9 22.6 1.5 4.5 2.0 4.7 1250 32.4 2.12 4.5 25.2 94.0 11.2 2.9
6.8 3.8 8.7 1080 44.8 27.6 1.46 30.7 49.8 15.0 1.1 6.8 3.8 8.7 1080 33.5 2.22 4.4 25.9 98.7 32.3 3.1
6.8 3.8 8.7 1250 45.6 29.7 1.51 30.1 50.8 15.0 1.2 6.8 3.8 8.7 1250 34.0 2.15 4.6 26.7 95.2 7.9 3.0
9.0 5.9 13.6 1080 44.7 27.6 1.43 31.3 49.6 11.2 1.0 9.0 5.9 13.6 1080 34.4 2.23 4.5 26.7 99.5 34.1 3.2
9.0 5.9 13.6 1250 45.5 29.7 1.48 30.7 50.5 11.2 1.0 9.0 5.9 13.6 1250 34.9 2.16 4.7 27.5 95.8 6.1 3.2
50
4.5 1.7 3.9 1080 43.7 27.3 1.68 26.0 49.5 22.4 1.9 4.5 1.7 3.9 1080 35.9 2.27 4.6 28.2 100.8 37.5 3.4
4.5 1.7 3.9 1250 44.5 29.3 1.75 25.5 50.4 22.4 2.0 4.5 1.7 3.9 1250 36.5 2.20 4.9 29.0 97.0 12.9 3.3
6.8 3.2 7.5 1080 44.5 27.5 1.57 28.3 49.9 15.1 1.5 6.8 3.2 7.5 1080 37.8 2.31 4.8 29.9 102.4 41.1 3.7
6.8 3.2 7.5 1250 45.3 29.6 1.63 27.7 50.8 15.1 1.6 6.8 3.2 7.5 1250 38.4 2.24 5.0 30.7 98.4 9.1 3.6
9.0 5.2 11.9 1080 44.7 27.6 1.53 29.3 49.9 11.3 1.4 9.0 5.2 11.9 1080 38.8 2.33 4.9 30.8 103.3 43.1 3.8
9.0 5.2 11.9 1250 45.5 29.7 1.58 28.8 50.9 11.3 1.4 9.0 5.2 11.9 1250 39.4 2.26 5.1 31.7 99.2 7.0 3.7
60
4.5 1.5 3.5 1080 42.2 26.8 1.86 22.7 48.5 22.0 2.6 4.5 1.5 3.5 1080 40.0 2.36 5.0 31.9 104.3 45.8 3.9
4.5 1.5 3.5 1250 42.9 28.8 1.93 22.3 49.5 22.0 2.7 4.5 1.5 3.5 1250 40.6 2.29 5.2 32.8 100.1 14.6 3.8
6.8 2.9 6.7 1080 43.4 27.2 1.73 25.1 49.3 14.9 2.1 6.8 2.9 6.7 1080 42.1 2.42 5.1 33.9 106.1 50.0 4.2
6.8 2.9 6.7 1250 44.1 29.2 1.79 24.7 50.2 14.9 2.1 6.8 2.9 6.7 1250 42.8 2.34 5.4 34.8 101.7 10.3 4.1
9.0 4.7 10.8 1080 43.9 27.3 1.67 26.3 49.6 11.2 1.9 9.0 4.7 10.8 1080 43.3 2.44 5.2 34.9 107.1 52.2 4.3
9.0 4.7 10.8 1250 44.6 29.4 1.73 25.9 50.5 11.2 1.9 9.0 4.7 10.8 1250 43.9 2.37 5.4 35.8 102.5 8.0 4.2
70
4.5 1.5 3.4 1080 40.2 26.0 2.06 19.5 47.3 21.4 3.4 4.5 1.5 3.4 1080 44.1 2.47 5.2 35.7 107.8 54.1 4.4
4.5 1.5 3.4 1250 40.9 28.0 2.14 19.2 48.2 21.4 3.5 4.5 1.5 3.4 1250 44.8 2.39 5.5 36.6 103.2 16.3 4.3
6.8 2.7 6.3 1080 41.7 26.6 1.91 21.8 48.2 14.6 2.8 6.8 2.7 6.3 1080 46.5 2.53 5.4 37.8 109.8 58.8 4.7
6.8 2.7 6.3 1250 42.4 28.6 1.98 21.4 49.2 14.6 2.9 6.8 2.7 6.3 1250 47.2 2.45 5.6 38.8 104.9 11.5 4.5
9.0 4.4 10.1 1080 42.4 26.8 1.84 23.0 48.6 11.0 2.5 9.0 4.4 10.1 1080 47.8 2.56 5.5 39.0 111.0 61.3 4.8
9.0 4.4 10.1 1250 43.1 28.8 1.91 22.6 49.6 11.0 2.6 9.0 4.4 10.1 1250 48.5 2.48 5.7 40.0 105.9 8.9 4.7
80
4.5 1.5 3.4 1080 38.0 25.2 2.29 16.6 45.8 20.8 4.3 4.5 1.5 3.4 1080 48.2 2.58 5.5 39.4 111.3 62.5 4.9
4.5 1.5 3.4 1250 38.6 27.1 2.37 16.3 46.7 20.8 4.4 4.5 1.5 3.4 1250 49.0 2.50 5.7 40.4 106.3 18.0 4.7
6.8 2.7 6.2 1080 39.6 25.8 2.13 18.6 46.8 14.2 3.6 6.8 2.7 6.2 1080 50.9 2.65 5.6 41.8 113.6 67.6 5.2
6.8 2.7 6.2 1250 40.3 27.7 2.20 18.3 47.8 14.2 3.7 6.8 2.7 6.2 1250 51.6 2.56 5.9 42.9 108.2 12.7 5.0
9.0 4.2 9.7 1080 40.4 26.1 2.05 19.7 47.4 10.7 3.3 9.0 4.2 9.7 1080 52.3 2.69 5.7 43.1 114.8 70.4 5.3
9.0 4.2 9.7 1250 41.1 28.1 2.12 19.4 48.3 10.7 3.4 9.0 4.2 9.7 1250 53.1 2.60 6.0 44.2 109.3 9.8 5.2
90
4.5 1.5 3.5 1080 35.6 24.1 2.54 14.0 44.3 20.1 5.3 4.5 1.5 3.5 1080 52.4 2.69 5.7 43.2 114.9 70.8 5.3
4.5 1.5 3.5 1250 37.9 26.7 2.45 15.4 46.2 20.1 4.7 4.5 1.5 3.5 1250 53.2 2.60 6.0 44.3 109.4 19.7 5.2
6.8 2.6 6.1 1080 37.2 24.9 2.37 15.7 45.3 13.7 4.6 6.8 2.6 6.1 1080 55.3 2.76 5.9 45.8 117.4 76.4 5.6
6.8 2.6 6.1 1250 37.9 26.7 2.45 15.4 46.2 13.7 4.7 6.8 2.6 6.1 1250 56.1 2.68 6.1 47.0 111.6 13.9 5.5
9.0 4.1 9.5 1080 38.1 25.2 2.28 16.7 45.9 10.4 4.3 9.0 4.1 9.5 1080 56.8 2.81 5.9 47.3 118.7 79.5 5.8
9.0 4.1 9.5 1250 38.7 27.1 2.36 16.4 46.8 10.4 4.3 9.0 4.1 9.5 1250 57.7 2.72 6.2 48.4 112.7 10.8 5.6
100
4.5 1.5 3.5 1080 33.2 23.0 2.82 11.8 42.8 19.4 6.5
Operation not recommended
4.5 1.5 3.5 1250 33.7 24.8 2.92 11.6 43.7 19.4 6.7
6.8 2.6 6.1 1080 34.8 23.8 2.63 13.2 43.7 13.2 5.7
6.8 2.6 6.1 1250 35.4 25.6 2.73 13.0 44.7 13.2 5.8
9.0 4.1 9.4 1080 35.6 24.1 2.54 14.0 44.3 10.0 5.3
9.0 4.1 9.4 1250 36.2 26.0 2.63 13.7 45.2 10.0 5.4
110
4.5 1.4 3.2 1080 30.8 21.9 3.11 9.9 41.5 18.8 7.9
4.5 1.4 3.2 1250 31.4 23.5 3.23 9.7 42.4 18.8 8.0
6.8 2.5 5.9 1080 32.3 22.6 2.92 11.1 42.3 12.8 7.0
6.8 2.5 5.9 1250 32.9 24.3 3.03 10.9 43.2 12.8 7.1
9.0 4.0 9.2 1080 33.1 23.0 2.83 11.7 42.7 9.7 6.6
9.0 4.0 9.2 1250 33.7 24.7 2.93 11.5 43.6 9.7 6.7
120
4.5 1.1 2.6 1080 28.7 20.8 3.43 8.4 40.4 18.4 9.4
4.5 1.1 2.6 1250 29.2 22.3 3.55 8.2 41.4 18.4 9.6
6.8 2.4 5.4 1080 30.0 21.4 3.23 9.3 41.0 12.4 8.4
6.8 2.4 5.4 1250 30.5 23.1 3.35 9.1 41.9 12.4 8.6
9.0 3.9 8.9 1080 30.7 21.8 3.13 9.8 41.4 9.4 7.9
9.0 3.9 8.9 1250 31.2 23.4 3.25 9.6 42.3 9.4 8.1
Interpolation is permissible; extrapolation is not. Operation below 40°F EWT is based upon a 15% methanol antifreeze solution.
All entering air conditions are 80°F DB and 67°F WB in cooling, and 70°F DB in heating. Operation below 60°F EWT requires optional insulated water/refrigerant circuit.
AHRI/ISO certi ed conditions are 80.6°F DB and 66.2°F WB in cooling and 68°F DB in heating. See performance correction tables for operating conditions other than those listed above.
Table does not re ect fan or pump power corrections for AHRI/ISO conditions. For operation in the shaded areas, please see the Performance Data Selection Notes.
All performance is based upon the lower voltage of dual voltage rated units.
39
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Performance Data — HT 048 - Full Load
1550 CFM Nominal (ISO Rated) Air ow Cooling, 1650 CFM Nominal (ISO Rated) Air ow Heating Performance capacities shown in thousands of Btuh
EWT
°F
Cooling - EAT 80/67°F Heating - EAT 70°F
GPM
WPD CFM TC SC kWEER HRLWT HWC
GPM
WPD CFM HCkWCOP HELAT LWT HWC
PSI FT PSI FT
20 Operation not recommended 12.0 5.2 12.1 1430 33.0 2.94 3.3 23.0 91.4 16.2 3.4
12.0 5.2 12.1 1650 33.5 2.85 3.4 23.8 88.8 4.0 3.3
30
6.0 1.2 2.8 1330 58.6 39.7 1.89 31.0 65.0 22.1 1.8 6.0 1.2 2.8 1430 35.6 3.03 3.4 25.2 93.0 21.6 3.6
6.0 1.2 2.8 1550 59.6 42.6 1.96 30.4 66.3 22.1 1.8 6.0 1.2 2.8 1650 36.1 2.94 3.6 26.1 90.3 8.7 3.5
9.0 2.7 6.4 1330 58.4 40.7 1.78 32.8 64.5 14.6 1.8 9.0 2.7 6.4 1430 36.9 3.07 3.5 26.5 93.9 24.1 3.6
9.0 2.7 6.4 1550 59.4 43.8 1.85 32.2 65.7 14.6 1.8 9.0 2.7 6.4 1650 37.5 2.98 3.7 27.3 91.0 6.1 3.5
12.0 4.7 10.8 1330 58.0 41.3 1.73 33.5 64.0 10.9 1.8 12.0 4.7 10.8 1430 37.7 3.10 3.6 27.1 94.4 25.5 3.7
12.0 4.7 10.8 1550 59.0 44.4 1.80 32.9 65.2 10.9 1.9 12.0 4.7 10.8 1650 38.3 3.00 3.7 28.1 91.5 4.7 3.6
40
6.0 1.0 2.3 1330 57.8 38.4 2.06 28.1 64.8 22.0 2.0 6.0 1.0 2.3 1430 40.3 3.17 3.7 29.5 96.1 30.2 3.8
6.0 1.0 2.3 1550 58.8 41.3 2.13 27.6 66.1 22.0 2.0 6.0 1.0 2.3 1650 40.9 3.07 3.9 30.4 93.0 10.1 3.7
9.0 2.4 5.6 1330 58.5 39.3 1.93 30.3 65.1 14.7 1.8 9.0 2.4 5.6 1430 42.1 3.21 3.8 31.2 97.3 33.1 3.9
9.0 2.4 5.6 1550 59.5 42.3 2.00 29.7 66.3 14.7 1.9 9.0 2.4 5.6 1650 42.8 3.11 4.0 32.1 94.0 7.1 3.8
12.0 4.2 9.7 1330 58.6 39.8 1.87 31.3 65.0 11.0 1.8 12.0 4.2 9.7 1430 43.1 3.24 3.9 32.1 97.9 34.7 4.0
12.0 4.2 9.7 1550 59.6 42.8 1.94 30.7 66.2 11.0 1.8 12.0 4.2 9.7 1650 43.8 3.14 4.1 33.1 94.6 5.5 3.9
50
6.0 0.9 2.0 1330 56.1 37.4 2.25 24.9 63.8 21.7 2.3 6.0 0.9 2.0 1430 45.5 3.30 4.0 34.3 99.5 38.6 4.1
6.0 0.9 2.0 1550 57.1 40.2 2.33 24.4 65.0 21.7 2.4 6.0 0.9 2.0 1650 46.2 3.20 4.2 35.3 95.9 11.8 4.0
9.0 2.2 5.1 1330 57.4 38.1 2.11 27.2 64.6 14.6 2.0 9.0 2.2 5.1 1430 47.8 3.35 4.2 36.4 101.0 41.9 4.3
9.0 2.2 5.1 1550 58.4 41.0 2.18 26.7 65.9 14.6 2.1 9.0 2.2 5.1 1650 48.5 3.25 4.4 37.5 97.2 8.3 4.1
12.0 3.9 9.0 1330 57.9 38.5 2.04 28.4 64.9 11.0 1.9 12.0 3.9 9.0 1430 49.1 3.38 4.3 37.5 101.8 43.7 4.3
12.0 3.9 9.0 1550 58.9 41.4 2.11 27.9 66.1 11.0 2.0 12.0 3.9 9.0 1650 49.8 3.28 4.5 38.7 98.0 6.4 4.2
60
6.0 0.8 1.9 1330 53.7 36.5 2.48 21.7 62.2 21.1 2.9 6.0 0.8 1.9 1430 51.1 3.43 4.4 39.4 103.1 46.9 4.5
6.0 0.8 1.9 1550 54.7 39.2 2.57 21.3 63.4 21.1 2.9 6.0 0.8 1.9 1650 51.9 3.33 4.6 40.5 99.1 13.5 4.3
9.0 2.0 4.7 1330 55.5 37.1 2.31 24.0 63.4 14.4 2.5 9.0 2.0 4.7 1430 53.8 3.50 4.5 41.9 104.9 50.7 4.7
9.0 2.0 4.7 1550 56.4 39.9 2.40 23.6 64.6 14.4 2.5 9.0 2.0 4.7 1650 54.7 3.39 4.7 43.1 100.7 9.6 4.5
12.0 3.6 8.4 1330 56.3 37.5 2.24 25.2 63.9 10.9 2.3 12.0 3.6 8.4 1430 55.4 3.54 4.6 43.3 105.9 52.8 4.8
12.0 3.6 8.4 1550 57.2 40.3 2.32 24.7 65.1 10.9 2.3 12.0 3.6 8.4 1650 56.2 3.43 4.8 44.5 101.5 7.4 4.6
70
6.0 0.8 1.8 1330 51.0 35.6 2.73 18.7 60.3 20.5 3.6 6.0 0.8 1.8 1430 56.9 3.57 4.7 44.7 106.8 55.1 4.9
6.0 0.8 1.8 1550 51.8 38.2 2.83 18.3 61.5 20.5 3.7 6.0 0.8 1.8 1650 57.7 3.46 4.9 45.9 102.4 15.3 4.7
9.0 2.0 4.5 1330 52.9 36.2 2.55 20.8 61.6 14.0 3.1 9.0 2.0 4.5 1430 60.0 3.66 4.8 47.6 108.9 59.4 5.1
9.0 2.0 4.5 1550 53.9 38.9 2.64 20.4 62.9 14.0 3.1 9.0 2.0 4.5 1650 61.0 3.54 5.0 48.9 104.2 10.9 5.0
12.0 3.5 8.1 1330 53.9 36.5 2.46 21.9 62.3 10.6 2.8 12.0 3.5 8.1 1430 61.8 3.71 4.9 49.1 110.0 61.8 5.2
12.0 3.5 8.1 1550 54.8 39.3 2.55 21.5 63.5 10.6 2.9 12.0 3.5 8.1 1650 62.7 3.59 5.1 50.5 105.2 8.4 5.1
80
6.0 0.8 1.8 1330 47.9 34.6 3.02 15.8 58.2 19.8 4.5 6.0 0.8 1.8 1430 62.7 3.73 4.9 50.0 110.6 63.3 5.3
6.0 0.8 1.8 1550 48.7 37.2 3.13 15.5 59.4 19.8 4.5 6.0 0.8 1.8 1650 63.7 3.62 5.2 51.3 105.7 17.1 5.2
9.0 1.9 4.4 1330 50.0 35.3 2.82 17.7 59.6 13.5 3.8 9.0 1.9 4.4 1430 66.2 3.84 5.1 53.1 112.9 68.2 5.6
9.0 1.9 4.4 1550 50.8 37.9 2.92 17.4 60.8 13.5 3.9 9.0 1.9 4.4 1650 67.2 3.72 5.3 54.5 107.7 12.1 5.4
12.0 3.4 7.8 1330 51.0 35.6 2.72 18.7 60.3 10.3 3.6 12.0 3.4 7.8 1430 68.1 3.90 5.1 54.8 114.1 70.9 5.8
12.0 3.4 7.8 1550 51.9 38.3 2.82 18.4 61.5 10.3 3.6 12.0 3.4 7.8 1650 69.2 3.78 5.4 56.3 108.8 9.4 5.6
90
6.0 0.8 1.9 1330 44.7 33.4 3.36 13.3 56.2 19.1 5.5 6.0 0.8 1.9 1430 68.5 3.91 5.1 55.1 114.3 71.6 5.8
6.0 0.8 1.9 1550 47.6 36.8 3.25 14.6 58.7 19.1 4.9 6.0 0.8 1.9 1650 69.5 3.79 5.4 56.6 109.0 18.9 5.6
9.0 1.9 4.4 1330 46.8 34.2 3.14 14.9 57.5 13.0 4.8 9.0 1.9 4.4 1430 72.2 4.05 5.2 58.4 116.8 77.0 6.2
9.0 1.9 4.4 1550 47.6 36.8 3.25 14.6 58.7 13.0 4.9 9.0 1.9 4.4 1650 73.3 3.92 5.5 60.0 111.2 13.3 6.0
12.0 3.3 7.7 1330 47.9 34.6 3.03 15.8 58.2 9.9 4.5 12.0 3.3 7.7 1430 74.2 4.13 5.3 60.1 118.1 80.0 6.4
12.0 3.3 7.7 1550 48.7 37.2 3.14 15.5 59.4 9.9 4.6 12.0 3.3 7.7 1650 75.4 4.00 5.5 61.7 112.3 10.3 6.2
100
6.0 0.8 1.9 1330 41.6 32.2 3.75 11.1 54.4 18.5 6.7
Operation not recommended
6.0 0.8 1.9 1550 42.4 34.6 3.88 10.9 55.6 18.5 6.9
9.0 1.9 4.3 1330 43.6 33.0 3.50 12.5 55.5 12.6 5.9
9.0 1.9 4.3 1550 44.3 35.5 3.62 12.2 56.7 12.6 6.1
12.0 3.3 7.6 1330 44.6 33.4 3.38 13.2 56.1 9.6 5.6
12.0 3.3 7.6 1550 45.4 35.9 3.50 13.0 57.3 9.6 5.7
110
6.0 0.8 1.8 1330 38.8 30.9 4.19 9.2 53.1 18.1 8.2
6.0 0.8 1.8 1550 39.5 33.2 4.35 9.1 54.3 18.1 8.4
9.0 1.8 4.3 1330 40.5 31.7 3.91 10.3 53.8 12.2 7.3
9.0 1.8 4.3 1550 41.2 34.1 4.06 10.2 55.0 12.2 7.4
12.0 3.3 7.5 1330 41.4 32.1 3.78 11.0 54.3 9.2 6.8
12.0 3.3 7.5 1550 42.1 34.5 3.92 10.8 55.5 9.2 7.0
120
6.0 0.7 1.6 1330 36.4 29.6 4.71 7.7 52.5 17.9 9.9
6.0 0.7 1.6 1550 37.0 31.8 4.88 7.6 53.7 17.9 10.1
9.0 1.8 4.1 1330 37.8 30.4 4.39 8.6 52.7 12.0 8.8
9.0 1.8 4.1 1550 38.4 32.6 4.55 8.4 53.9 12.0 9.0
12.0 3.2 7.4 1330 38.5 30.8 4.24 9.1 53.0 9.0 8.3
12.0 3.2 7.4 1550 39.2 33.1 4.39 8.9 54.2 9.0 8.5
Interpolation is permissible; extrapolation is not. Operation below 40°F EWT is based upon a 15% methanol antifreeze solution.
All entering air conditions are 80°F DB and 67°F WB in cooling, and 70°F DB in heating. Operation below 60°F EWT requires optional insulated water/refrigerant circuit.
AHRI/ISO certi ed conditions are 80.6°F DB and 66.2°F WB in cooling and 68°F DB in heating. See performance correction tables for operating conditions other than those listed above.
Table does not re ect fan or pump power corrections for AHRI/ISO conditions. For operation in the shaded areas, please see the Performance Data Selection Notes.
All performance is based upon the lower voltage of dual voltage rated units.
40
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Performance Data — HT 060 - Full Load
1825 CFM Nominal (ISO Rated) Air ow Cooling, 2050 CFM Nominal (ISO Rated) Air ow Heating Performance capacities shown in thousands of Btuh
EWT
°F
Cooling - EAT 80/67°F Heating - EAT 70°F
GPM
WPD CFM TC SC kWEER HRLWT HWC
GPM
WPD CFM HCkWCOP HELAT LWT HWC
PSI FT PSI FT
20 Operation not recommended 15.0 7.3 16.8 1750 42.8 3.89 3.2 29.5 92.6 16.1 4.0
15.0 7.3 16.8 2050 43.4 3.77 3.4 30.6 89.6 4.1 3.8
30
7.5 1.7 3.9 1590 75.3 49.7 2.68 28.1 84.4 22.9 1.9 7.5 1.7 3.9 1750 46.9 3.95 3.5 33.4 94.8 21.1 4.1
7.5 1.7 3.9 1850 76.6 53.4 2.78 27.5 86.1 22.9 2.0 7.5 1.7 3.9 2050 47.6 3.82 3.6 34.5 91.5 9.2 4.0
11.3 3.7 8.6 1590 74.9 50.3 2.57 29.1 83.6 15.2 1.8 11.3 3.7 8.6 1750 49.1 3.98 3.6 35.6 96.0 23.7 4.2
11.3 3.7 8.6 1850 76.2 54.0 2.67 28.5 85.3 15.2 1.8 11.3 3.7 8.6 2050 49.9 3.86 3.8 36.7 92.5 6.5 4.1
15.0 6.1 14.1 1590 74.2 50.5 2.53 29.3 82.9 11.3 1.8 15.0 6.1 14.1 1750 50.4 4.00 3.7 36.7 96.7 25.1 4.2
15.0 6.1 14.1 1850 75.5 54.3 2.62 28.8 84.5 11.3 1.8 15.0 6.1 14.1 2050 51.2 3.88 3.9 37.9 93.1 5.1 4.1
40
7.5 1.2 2.7 1590 74.4 48.8 2.86 26.0 84.2 22.9 2.3 7.5 1.2 2.7 1750 53.9 4.06 3.9 40.0 98.5 29.3 4.4
7.5 1.2 2.7 1850 75.7 52.5 2.97 25.5 85.8 22.9 2.3 7.5 1.2 2.7 2050 54.7 3.94 4.1 41.3 94.7 11.0 4.2
11.3 3.0 7.0 1590 75.2 49.5 2.72 27.6 84.5 15.3 2.0 11.3 3.0 7.0 1750 56.7 4.12 4.0 42.7 100.0 32.4 4.5
11.3 3.0 7.0 1850 76.5 53.2 2.82 27.1 86.1 15.3 2.0 11.3 3.0 7.0 2050 57.6 3.99 4.2 44.0 96.0 7.8 4.4
15.0 5.3 12.2 1590 75.3 49.8 2.66 28.3 84.3 11.5 1.9 15.0 5.3 12.2 1750 58.3 4.15 4.1 44.1 100.8 34.1 4.6
15.0 5.3 12.2 1850 76.6 53.6 2.76 27.8 86.0 11.5 1.9 15.0 5.3 12.2 2050 59.2 4.02 4.3 45.5 96.7 6.1 4.4
50
7.5 0.9 2.0 1590 72.4 47.8 3.08 23.5 82.9 22.5 2.8 7.5 0.9 2.0 1750 61.1 4.21 4.3 46.8 102.4 37.5 4.7
7.5 0.9 2.0 1850 73.6 51.4 3.20 23.0 84.5 22.5 2.9 7.5 0.9 2.0 2050 62.1 4.08 4.5 48.2 98.0 12.8 4.6
11.3 2.6 6.0 1590 74.0 48.6 2.91 25.4 84.0 15.2 2.4 11.3 2.6 6.0 1750 64.5 4.28 4.4 49.9 104.1 41.1 4.9
11.3 2.6 6.0 1850 75.3 52.2 3.02 25.0 85.6 15.2 2.5 11.3 2.6 6.0 2050 65.5 4.15 4.6 51.3 99.6 9.1 4.7
15.0 4.7 10.8 1590 74.6 48.9 2.83 26.3 84.3 11.5 2.2 15.0 4.7 10.8 1750 66.3 4.32 4.5 51.6 105.1 43.1 5.0
15.0 4.7 10.8 1850 75.9 52.6 2.94 25.9 85.9 11.5 2.3 15.0 4.7 10.8 2050 67.3 4.19 4.7 53.0 100.4 7.1 4.8
60
7.5 0.7 1.7 1590 69.5 46.7 3.35 20.7 81.0 22.0 3.5 7.5 0.7 1.7 1750 68.5 4.37 4.6 53.6 106.2 45.7 5.1
7.5 0.7 1.7 1850 70.7 50.3 3.47 20.4 82.6 22.0 3.6 7.5 0.7 1.7 2050 69.5 4.24 4.8 55.1 101.4 14.7 5.0
11.3 2.4 5.4 1590 71.7 47.6 3.15 22.8 82.5 15.0 3.0 11.3 2.4 5.4 1750 72.3 4.46 4.7 57.1 108.3 49.9 5.3
11.3 2.4 5.4 1850 73.0 51.1 3.26 22.4 84.1 15.0 3.1 11.3 2.4 5.4 2050 73.4 4.33 5.0 58.6 103.2 10.4 5.2
15.0 4.3 10.0 1590 72.7 48.0 3.05 23.8 83.1 11.3 2.8 15.0 4.3 10.0 1750 74.4 4.52 4.8 59.0 109.4 52.1 5.5
15.0 4.3 10.0 1850 74.0 51.6 3.16 23.4 84.8 11.3 2.8 15.0 4.3 10.0 2050 75.5 4.38 5.1 60.6 104.1 8.1 5.3
70
7.5 0.7 1.7 1590 66.1 45.5 3.67 18.0 78.7 21.4 4.4 7.5 0.7 1.7 1750 75.8 4.55 4.9 60.3 110.1 53.9 5.6
7.5 0.7 1.7 1850 67.3 48.9 3.81 17.7 80.3 21.4 4.5 7.5 0.7 1.7 2050 77.0 4.41 5.1 61.9 104.8 16.5 5.4
11.3 2.3 5.2 1590 68.6 46.4 3.43 20.0 80.4 14.6 3.8 11.3 2.3 5.2 1750 80.1 4.67 5.0 64.2 112.4 58.6 5.8
11.3 2.3 5.2 1850 69.8 49.9 3.56 19.6 82.0 14.6 3.8 11.3 2.3 5.2 2050 81.3 4.52 5.3 65.9 106.7 11.7 5.7
15.0 4.1 9.5 1590 69.9 46.9 3.32 21.0 81.2 11.0 3.5 15.0 4.1 9.5 1750 82.4 4.73 5.1 66.3 113.6 61.2 6.0
15.0 4.1 9.5 1850 71.1 50.4 3.44 20.6 82.8 11.0 3.5 15.0 4.1 9.5 2050 83.7 4.59 5.3 68.0 107.8 9.1 5.8
80
7.5 0.8 1.8 1590 62.5 44.1 4.05 15.4 76.3 20.8 5.5 7.5 0.8 1.8 1750 83.1 4.75 5.1 66.9 114.0 62.2 6.1
7.5 0.8 1.8 1850 63.5 47.5 4.19 15.1 77.8 20.8 5.6 7.5 0.8 1.8 2050 84.4 4.61 5.4 68.7 108.1 18.3 5.9
11.3 2.2 5.2 1590 65.1 45.1 3.78 17.2 78.0 14.1 4.7 11.3 2.2 5.2 1750 87.8 4.89 5.3 71.1 116.4 67.4 6.4
11.3 2.2 5.2 1850 66.2 48.5 3.91 16.9 79.6 14.1 4.8 11.3 2.2 5.2 2050 89.1 4.74 5.5 73.0 110.3 13.0 6.2
15.0 4.1 9.4 1590 66.4 45.6 3.65 18.2 78.8 10.7 4.3 15.0 4.1 9.4 1750 90.3 4.97 5.3 73.4 117.8 70.2 6.6
15.0 4.1 9.4 1850 67.5 49.0 3.78 17.9 80.4 10.7 4.4 15.0 4.1 9.4 2050 91.7 4.81 5.6 75.3 111.4 10.0 6.4
90
7.5 0.8 2.0 1590 58.7 42.6 4.49 13.1 74.0 20.2 6.7 7.5 0.8 2.0 1750 90.3 4.97 5.3 73.3 117.8 70.4 6.6
7.5 0.8 2.0 1850 62.3 47.0 4.33 14.4 77.1 20.2 5.9 7.5 0.8 2.0 2050 91.7 4.81 5.6 75.2 111.4 20.1 6.4
11.3 2.3 5.2 1590 61.3 43.7 4.18 14.7 75.5 13.7 5.8 11.3 2.3 5.2 1750 95.2 5.12 5.4 77.8 120.4 76.2 7.1
11.3 2.3 5.2 1850 62.3 47.0 4.33 14.4 77.1 13.7 5.9 11.3 2.3 5.2 2050 96.7 4.96 5.7 79.7 113.7 14.2 6.9
15.0 4.0 9.3 1590 62.6 44.2 4.03 15.5 76.4 10.4 5.4 15.0 4.0 9.3 1750 97.9 5.21 5.5 80.1 121.8 79.3 7.3
15.0 4.0 9.3 1850 63.7 47.5 4.18 15.2 77.9 10.4 5.5 15.0 4.0 9.3 2050 99.4 5.05 5.8 82.1 114.9 11.0 7.1
100
7.5 0.9 2.0 1590 55.2 41.1 5.00 11.0 72.3 19.7 8.1
Operation not recommended
7.5 0.9 2.0 1850 56.2 44.2 5.18 10.8 73.9 19.7 8.3
11.3 2.3 5.2 1590 57.5 42.1 4.65 12.4 73.4 13.3 7.1
11.3 2.3 5.2 1850 58.5 45.3 4.82 12.1 75.0 13.3 7.3
15.0 4.0 9.3 1590 58.8 42.6 4.48 13.1 74.1 10.1 6.7
15.0 4.0 9.3 1850 59.8 45.9 4.65 12.9 75.6 10.1 6.8
110
7.5 0.8 1.8 1590 52.2 39.6 5.60 9.3 71.3 19.4 9.8
7.5 0.8 1.8 1850 53.1 42.6 5.80 9.2 72.9 19.4 10.0
11.3 2.2 5.1 1590 54.1 40.6 5.20 10.4 71.8 13.1 8.7
11.3 2.2 5.1 1850 55.0 43.6 5.39 10.2 73.4 13.1 8.8
15.0 4.0 9.2 1590 55.2 41.1 5.01 11.0 72.3 9.8 8.2
15.0 4.0 9.2 1850 56.1 44.2 5.19 10.8 73.8 9.8 8.3
120
7.5 0.6 1.3 1590 50.0 38.5 6.30 7.9 71.5 19.5 11.7
7.5 0.6 1.3 1850 50.8 41.4 6.53 7.8 73.1 19.5 11.9
11.3 2.0 4.7 1590 51.3 39.2 5.83 8.8 71.2 12.9 10.4
11.3 2.0 4.7 1850 52.2 42.1 6.04 8.6 72.8 12.9 10.6
15.0 3.8 8.8 1590 52.1 39.6 5.62 9.3 71.3 9.7 9.8
15.0 3.8 8.8 1850 53.0 42.6 5.82 9.1 72.9 9.7 10.0
Interpolation is permissible; extrapolation is not. Operation below 40°F EWT is based upon a 15% methanol antifreeze solution.
All entering air conditions are 80°F DB and 67°F WB in cooling, and 70°F DB in heating. Operation below 60°F EWT requires optional insulated water/refrigerant circuit.
AHRI/ISO certi ed conditions are 80.6°F DB and 66.2°F WB in cooling and 68°F DB in heating. See performance correction tables for operating conditions other than those listed above.
Table does not re ect fan or pump power corrections for AHRI/ISO conditions. For operation in the shaded areas, please see the Performance Data Selection Notes.
All performance is based upon the lower voltage of dual voltage rated units.
41
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Performance Data — HT 070 - Full Load
1950 CFM Nominal (Rated) Air ow Cooling, 2100 CFM Nominal (Rated) Air ow Heating P erformance capacities shown in thousands of Btuh
EWT
°F
Cooling - EAT 80/67°F Heating - EAT 70°F
GPM
WPD CFM TC SC kWEER HRLWT HWC
GPM
WPD CFM HCkWCOP HELAT LWT HWC
PSI FT PSI FT
20 Operation not recommended 17.0 8.9 20.6 1750 46.6 4.66 2.9 30.7 94.7 16.4 5.2
17.0 8.9 20.6 2050 47.3 4.52 3.1 31.9 91.4 3.8 5.0
30
8.5 2.2 5.1 1590 82.4 50.1 3.04 27.1 92.8 22.2 3.6 8.5 2.2 5.1 1750 51.6 4.77 3.2 35.3 97.3 21.7 5.4
8.5 2.2 5.1 1850 83.8 53.9 3.15 26.6 94.6 22.2 3.7 8.5 2.2 5.1 2050 52.4 4.63 3.3 36.6 93.7 8.6 5.2
12.8 4.6 10.6 1590 82.3 50.0 2.90 28.4 92.2 14.7 3.6 12.8 4.6 10.6 1750 54.0 4.83 3.3 37.5 98.6 24.1 5.5
12.8 4.6 10.6 1850 83.7 53.8 3.00 27.9 93.9 14.7 3.7 12.8 4.6 10.6 2050 54.8 4.68 3.4 38.8 94.8 6.1 5.4
17.0 7.6 17.6 1590 81.9 49.8 2.84 28.9 91.6 11.0 3.6 17.0 7.6 17.6 1750 55.3 4.86 3.3 38.7 99.2 25.4 5.6
17.0 7.6 17.6 1850 83.3 53.5 2.94 28.3 93.3 11.0 3.7 17.0 7.6 17.6 2050 56.1 4.71 3.5 40.1 95.3 4.7 5.5
40
8.5 1.6 3.8 1590 81.3 49.8 3.27 24.9 92.4 22.2 3.9 8.5 1.6 3.8 1750 59.4 4.96 3.5 42.4 101.4 30.0 5.9
8.5 1.6 3.8 1850 82.7 53.5 3.39 24.4 94.3 22.2 4.0 8.5 1.6 3.8 2050 60.3 4.80 3.7 43.9 97.2 10.3 5.7
12.8 3.9 8.9 1590 82.2 50.1 3.09 26.6 92.8 14.8 3.6 12.8 3.9 8.9 1750 62.1 5.02 3.6 45.0 102.9 32.9 6.1
12.8 3.9 8.9 1850 83.6 53.9 3.21 26.1 94.6 14.8 3.7 12.8 3.9 8.9 2050 63.1 4.87 3.8 46.5 98.5 7.3 5.9
17.0 6.7 15.5 1590 82.4 50.1 3.02 27.3 92.7 11.1 3.6 17.0 6.7 15.5 1750 63.6 5.06 3.7 46.4 103.7 34.5 6.2
17.0 6.7 15.5 1850 83.8 53.9 3.13 26.8 94.5 11.1 3.7 17.0 6.7 15.5 2050 64.6 4.90 3.9 47.9 99.2 5.6 6.1
50
8.5 1.3 3.0 1590 79.1 49.0 3.54 22.3 91.2 21.9 4.5 8.5 1.3 3.0 1750 66.9 5.14 3.8 49.4 105.4 38.4 6.5
8.5 1.3 3.0 1850 80.5 52.6 3.67 21.9 93.0 21.9 4.6 8.5 1.3 3.0 2050 67.9 4.99 4.0 50.9 100.7 12.0 6.3
12.8 3.4 7.8 1590 80.8 49.6 3.34 24.2 92.2 14.7 4.0 12.8 3.4 7.8 1750 70.1 5.23 3.9 52.3 107.1 41.8 6.8
12.8 3.4 7.8 1850 82.2 53.3 3.46 23.8 94.0 14.7 4.1 12.8 3.4 7.8 2050 71.2 5.07 4.1 53.9 102.1 8.5 6.6
17.0 6.0 13.9 1590 81.5 49.8 3.24 25.1 92.5 11.1 3.8 17.0 6.0 13.9 1750 71.8 5.27 4.0 53.8 108.0 43.7 7.0
17.0 6.0 13.9 1850 82.9 53.6 3.36 24.7 94.3 11.1 3.9 17.0 6.0 13.9 2050 72.9 5.11 4.2 55.5 102.9 6.5 6.8
60
8.5 1.2 2.7 1590 76.1 47.8 3.87 19.6 89.3 21.4 5.4 8.5 1.2 2.7 1750 74.4 5.34 4.1 56.2 109.4 46.8 7.3
8.5 1.2 2.7 1850 77.4 51.4 4.01 19.3 91.1 21.4 5.6 8.5 1.2 2.7 2050 75.5 5.18 4.3 57.9 104.1 13.6 7.1
12.8 3.1 7.1 1590 78.3 48.7 3.63 21.6 90.7 14.5 4.7 12.8 3.1 7.1 1750 78.0 5.44 4.2 59.4 111.3 50.7 7.7
12.8 3.1 7.1 1850 79.7 52.3 3.76 21.2 92.5 14.5 4.8 12.8 3.1 7.1 2050 79.2 5.28 4.4 61.2 105.8 9.6 7.4
17.0 5.6 13.0 1590 79.3 49.1 3.52 22.6 91.3 11.0 4.4 17.0 5.6 13.0 1750 80.0 5.50 4.3 61.2 112.3 52.8 7.9
17.0 5.6 13.0 1850 80.7 52.7 3.64 22.2 93.1 11.0 4.5 17.0 5.6 13.0 2050 81.2 5.33 4.5 63.0 106.7 7.4 7.7
70
8.5 1.1 2.6 1590 72.4 46.3 4.26 17.0 87.0 20.9 6.7 8.5 1.1 2.6 1750 81.9 5.56 4.3 62.9 113.3 55.2 8.1
8.5 1.1 2.6 1850 73.7 49.8 4.42 16.7 88.7 20.9 6.8 8.5 1.1 2.6 2050 83.2 5.38 4.5 64.8 107.6 15.2 7.9
12.8 3.0 6.8 1590 75.0 47.4 3.98 18.9 88.6 14.2 5.8 12.8 3.0 6.8 1750 86.0 5.68 4.4 66.6 115.5 59.6 8.6
12.8 3.0 6.8 1850 76.3 50.9 4.12 18.5 90.4 14.2 5.9 12.8 3.0 6.8 2050 87.3 5.50 4.6 68.5 109.4 10.7 8.4
17.0 5.4 12.4 1590 76.3 47.9 3.85 19.8 89.4 10.7 5.4 17.0 5.4 12.4 1750 88.2 5.75 4.5 68.6 116.7 61.9 8.9
17.0 5.4 12.4 1850 77.6 51.5 3.99 19.5 91.2 10.7 5.5 17.0 5.4 12.4 2050 89.5 5.57 4.7 70.5 110.4 8.3 8.7
80
8.5 1.2 2.7 1590 68.4 44.7 4.72 14.5 84.5 20.3 8.2 8.5 1.2 2.7 1750 89.5 5.79 4.5 69.8 117.4 63.6 9.1
8.5 1.2 2.7 1850 69.5 48.1 4.89 14.2 86.2 20.3 8.4 8.5 1.2 2.7 2050 90.9 5.61 4.7 71.7 111.0 16.9 8.8
12.8 2.9 6.7 1590 71.2 45.8 4.40 16.2 86.2 13.8 7.1 12.8 2.9 6.7 1750 94.1 5.93 4.6 73.9 119.8 68.4 9.8
12.8 2.9 6.7 1850 72.4 49.3 4.56 15.9 88.0 13.8 7.3 12.8 2.9 6.7 2050 95.5 5.75 4.9 75.9 113.2 11.9 9.5
17.0 5.2 12.1 1590 72.6 46.4 4.24 17.1 87.1 10.5 6.6 17.0 5.2 12.1 1750 96.7 6.02 4.7 76.1 121.1 71.0 10.1
17.0 5.2 12.1 1850 73.8 49.9 4.40 16.8 88.8 10.5 6.7 17.0 5.2 12.1 2050 98.1 5.83 4.9 78.2 114.3 9.2 9.8
90
8.5 1.2 2.8 1590 64.1 43.0 5.26 12.2 82.0 19.7 10.0 8.5 1.2 2.8 1750 97.3 6.04 4.7 76.7 121.5 72.0 10.2
8.5 1.2 2.8 1850 68.1 47.4 5.07 13.4 85.4 19.7 9.0 8.5 1.2 2.8 2050 98.8 5.85 4.9 78.8 114.6 18.5 9.9
12.8 2.9 6.7 1590 67.0 44.1 4.89 13.7 83.6 13.4 8.8 12.8 2.9 6.7 1750 102.6 6.22 4.8 81.3 124.3 77.2 11.0
12.8 2.9 6.7 1850 68.1 47.4 5.07 13.4 85.4 13.4 9.0 12.8 2.9 6.7 2050 104.1 6.03 5.1 83.6 117.0 13.1 10.7
17.0 5.2 12.0 1590 68.4 44.7 4.71 14.5 84.5 10.1 8.2 17.0 5.2 12.0 1750 105.5 6.32 4.9 83.9 125.8 80.1 11.4
17.0 5.2 12.0 1850 69.6 48.1 4.88 14.2 86.3 10.1 8.4 17.0 5.2 12.0 2050 107.1 6.12 5.1 86.2 118.4 10.1 11.1
100
8.5 1.2 2.8 1590 59.8 41.2 5.88 10.2 79.9 19.2 12.2
Operation not recommended
8.5 1.2 2.8 1850 60.9 44.3 6.09 10.0 81.6 19.2 12.5
12.8 2.9 6.7 1590 62.6 42.3 5.46 11.5 81.2 13.0 10.8
12.8 2.9 6.7 1850 63.7 45.5 5.66 11.2 83.0 13.0 11.0
17.0 5.2 12.0 1590 64.0 42.9 5.27 12.2 82.0 9.9 10.1
17.0 5.2 12.0 1850 65.1 46.2 5.46 11.9 83.8 9.9 10.3
110
8.5 1.1 2.6 1590 55.7 39.5 6.61 8.4 78.2 18.8 14.7
8.5 1.1 2.6 1850 56.7 42.5 6.85 8.3 80.0 18.8 15.0
12.8 2.9 6.6 1590 58.3 40.6 6.13 9.5 79.2 12.7 13.1
12.8 2.9 6.6 1850 59.3 43.6 6.36 9.3 81.0 12.7 13.4
17.0 5.1 11.8 1590 59.6 41.1 5.91 10.1 79.8 9.6 12.3
17.0 5.1 11.8 1850 60.7 44.2 6.12 9.9 81.6 9.6 12.6
120
8.5 0.9 2.1 1590 52.0 38.1 7.45 7.0 77.4 18.6 17.6
8.5 0.9 2.1 1850 52.9 41.0 7.72 6.8 79.2 18.6 18.0
12.8 2.7 6.2 1590 54.2 39.0 6.91 7.8 77.8 12.5 15.8
12.8 2.7 6.2 1850 55.2 41.9 7.16 7.7 79.6 12.5 16.1
17.0 5.0 11.5 1590 55.5 39.4 6.65 8.3 78.2 9.4 14.9
17.0 5.0 11.5 1850 56.4 42.4 6.90 8.2 80.0 9.4 15.2
Interpolation is permissible; extrapolation is not. Operation below 40°F EWT is based upon a 15% methanol antifreeze solution.
All entering air conditions are 80°F DB and 67°F WB in cooling, and 70°F DB in heating. Operation below 60°F EWT requires optional insulated water/refrigerant circuit.
AHRI/ISO certi ed conditions are 80.6°F DB and 66.2°F WB in cooling and 68°F DB in heating. See performance correction tables for operating conditions other than those listed above.
Table does not re ect fan or pump power corrections for AHRI/ISO conditions. For operation in the shaded areas, please see the Performance Data Selection Notes.
All performance is based upon the lower voltage of dual voltage rated units.
42
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Preventive Maintenance
Water Coil Maintenance
(Direct ground water applications only) - If the system is installed
in an area with a known high mineral content (125 P.P.M. or
greater) in the water, it is best to establish a periodic maintenance
schedule with the owner so the coil can be checked regularly.
Consult the well water applications section of this manual for a
more detailed water coil material selection. Should periodic coil
cleaning be necessary, use standard coil cleaning procedures,
which are compatible with the heat exchanger material and
copper water lines. Generally, the more water fl owing through
the unit, the less chance for scaling. Therefore, 1.5 gpm per ton
[2.0 l/m per kW] is recommended as a minimum fl ow. Minimum
fl ow rate for entering water temperatures below 50°F [10°C] is 2.0
gpm per ton [2.6 l/m per kW].
Water Coil Maintenance
(All other water loop applications)
Generally water coil maintenance is not needed for closed loop
systems. However, if the piping is known to have high dirt or
debris content, it is best to establish a periodic maintenance
schedule with the owner so the water coil can be checked
regularly. Dirty installations are typically the result of deterioration
of iron or galvanized piping or components in the system.
Open cooling towers requiring heavy chemical treatment and
mineral buildup through water use can also contribute to higher
maintenance. Should periodic coil cleaning be necessary, use
standard coil cleaning procedures, which are compatible with both
the heat exchanger material and copper water lines. Generally,
the more water fl owing through the unit, the less chance for
scaling. However, fl ow rates over 3 gpm per ton (3.9 l/m per kW)
can produce water (or debris) velocities that can erode the heat
exchanger wall and ultimately produce leaks.
Hot Water Generator Coils
See water coil maintenance for ground water units. If the potable
water is hard or not chemically softened, the high temperatures
of the desuperheater will tend to scale even quicker than the
water coil and may need more frequent inspections. In areas with
extremely hard water, a HWG is not recommended.
Filters
Filters must be clean to obtain maximum performance. Filters
should be inspected every month under normal operating
conditions and be replaced when necessary. Units should never
be operated without a fi lter.
Washable, high effi ciency, electrostatic fi lters, when dirty, can
exhibit a very high pressure drop for the fan motor and reduce
air fl ow, resulting in poor performance. It is especially important
to provide consistent washing of these fi lters (in the opposite
direction of the normal air fl ow) once per month using a high
pressure wash similar to those found at self-serve car washes.
Condensate Drain
In areas where airborne bacteria may produce a “slimy”
substance in the drain pan, it may be necessary to treat the drain
pan chemically with an algaecide approximately every three
months to minimize the problem. The condensate pan may also
need to be cleaned periodically to insure indoor air quality. The
condensate drain can pick up lint and dirt, especially with dirty
fi lters. Inspect the drain twice a year to avoid the possibility of
plugging and eventual overfl ow.
Compressor
Conduct annual amperage checks to insure that amp draw is no
more than 10% greater than indicated on the serial plate data.
Fan Motors
All units have lubricated fan motors. Fan motors should never be
lubricated unless obvious, dry operation is suspected. Periodic
maintenance oiling is not recommended, as it will result in dirt
accumulating in the excess oil and cause eventual motor failure.
Conduct annual dry operation check and amperage check to
insure amp draw is no more than 10% greater than indicated on
serial plate data.
Air Coil
The air coil must be cleaned to obtain maximum performance.
Check once a year under normal operating conditions and, if
dirty, brush or vacuum clean. Care must be taken not to damage
the aluminum fi ns while cleaning. CAUTION: Fin edges are sharp.
Cabinet
Do not allow water to stay in contact with the cabinet for long
periods of time to prevent corrosion of the cabinet sheet metal.
Generally, vertical cabinets are set up from the fl oor a few inches
[7 - 8 cm] to prevent water from entering the cabinet. The cabinet
can be cleaned using a mild detergent.
Refrigerant System
To maintain sealed circuit integrity, do not install service gauges
unless unit operation appears abnormal. Reference the operating
charts for pressures and temperatures. Verify that air and water
fl ow rates are at proper levels before servicing the refrigerant
circuit.
43
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
General
If operational diffi culties are encountered, perform the preliminary
checks below before referring to the troubleshooting charts.
• Verify that the unit is receiving electrical supply power.
• Make sure the fuses in the fused disconnect switches
are intact.
After completing the preliminary checks described above,
inspect for other obvious problems such as leaking connections,
broken or disconnected wires, etc. If everything appears to
be in order, but the unit still fails to operate properly, refer to
the “CXM Troubleshooting Process Flowchart” or “Functional
Troubleshooting Chart.”
CXM Board
CXM board troubleshooting in general is best summarized as
simply verifying inputs and outputs. After inputs and outputs
have been verifi ed, board operation is confi rmed and the problem
must be elsewhere. Below are some general guidelines for
troubleshooting the CXM control.
Field Inputs
All inputs are 24VAC from the thermostat and can be verifi ed
using a volt meter between C and Y, G, O, W. 24VAC will be
present at the terminal (for example, between “Y” and “C”) if the
thermostat is sending an input to the CXM board.
Sensor Inputs
All sensor inputs are ‘paired wires’ connecting each component to
the board. Therefore, continuity on pressure switches, for example
can be checked at the board connector.
The thermistor resistance should be measured with the
connector removed so that only the impedance of the thermistor
is measured. If desired, this reading can be compared to the
thermistor resistance chart shown in the CXM AOM manual. An
ice bath can be used to check calibration of the thermistor.
Outputs
The compressor relay is 24VAC and can be verifi ed using a
voltmeter. The fan signal is passed through the board to the
external fan relay (units with PSC motors only). The alarm relay
can either be 24VAC as shipped or dry contacts for use with
DDC controls by clipping the JW1 jumper. Electric heat outputs
are 24VDC “ground sinking” and require a volt meter set for DC
to verify operation. The terminal marked “24VDC” is the 24VDC
supply to the electric heat board; terminal “EH1” is stage 1 electric
heat; terminal “EH2” is stage 2 electric heat. When electric heat
is energized (thermostat is sending a “W” input to the CXM
controller), there will be 24VDC between terminal “24VDC” and
“EH1” (stage 1 electric heat) and/or “EH2” (stage 2 electric heat).
A reading of 0VDC between “24VDC” and “EH1” or “EH2” will
indicate that the CXM board is NOT sending an output signal to
the electric heat board.
Test Mode
Test mode can be entered for 20 minutes by shorting the test
pins. The CXM board will automatically exit test mode after 20
minutes.
CXM Troubleshooting Process Flowchart/Functional
Troubleshooting Chart
The “CXM Functional Troubleshooting Process Flowchart”
is a quick overview of how to start diagnosing a suspected
problem, using the fault recognition features of the CXM board.
The “Functional Troubleshooting Chart” on the following page
is a more comprehensive method for identifying a number of
malfunctions that may occur, and is not limited to just the CXM
controls. Within the chart are fi ve columns:
• The “Fault” column describes the symptoms.
• Columns 2 and 3 identify in which mode the fault is likey to
occur, heating or cooling.
• The “Possible Cause column” identifi es the most likely sources
of the problem.
• The “Solution” column describes what should be done to
correct the problem.
WARNING! HAZARDOUS VOLTAGE! DISCONNECT
ALL ELECTRIC POWER INCLUDING REMOTE
DISCONNECTS BEFORE SERVICING.
Failure to disconnect power before servicing can cause
severe personal injury or death.
Troubleshooting
WARNING!
44
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
See “Does
not Operate
in Clg”
See “Only
Comp
Runs”
Start
Did Unit
Attempt to
Start?
Did Unit
Lockout at
Start-up?
Unit Short
Cycles?
Only Fan
Runs?
Only
Compressor
Runs?
Did unit lockout
after a period of
operation?
Does unit
operate in
cooling?
Unit is OK!
‘See Performance
Troubleshooting’ for
further help
Check Main
power (see power
problems)
Check fault LED code
on control board
Yes
No
No
No
No
No
Yes
No
Yes
See HP
Fault
See
LP/LOC
Fault
See FP1
Fault
See FP2
Fault See
Condensate
Fault
See Over/
Under
Voltage
No fault
shown
Replace
CXM
See “Unit
short
cycles”
See “Only
Fan Runs”
No
Yes
Yes
Yes
Yes
CXM Functional
Troubleshooting Flow Chart
CXM Process Flow Chart
WARNING!
WARNING! HAZARDOUS VOLTAGE! DISCONNECT
ALL ELECTRIC POWER INCLUDING REMOTE
DISCONNECTS BEFORE SERVICING.
Failure to disconnect power before servicing can cause
severe personal injury or death.
45
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Functional Troubleshooting
Fault Htg Clg Possible Cause Solution
Main power problems XXGreen Status LED Off
Check line voltage circuit breaker and disconnect.
Check for line voltage between L1 and L2 on the contactor.
Check for 24VAC between R and C on CXM/DXM'
Check primary/secondary voltage on transformer.
HP Fault
Code 2
High Pressure
XReduced or no water fl ow in cooling Check pump operation or valve operation/setting.
Check water fl ow adjust to proper fl ow rate.
XWater Temperature out of range in cooling Bring water temp within design parameters.
XReduced or no air fl ow in heating
Check for dirty air fi lter and clean or replace.
Check fan motor operation and airfl ow restrictions.
Dirty Air Coil- construction dust etc.
Too high of external static. Check static vs blower table.
XAir temperature out of range in heating Bring return air temp within design parameters.
XXOvercharged with refrigerant Check superheat/subcooling vs typical operating condition table.
XXBad HP Switch Check switch continuity and operation. Replace.
LP/LOC Fault
Code 3
Low Pressure / Loss of Charge
XXInsuffi cient charge Check for refrigerant leaks
XCompressor pump down at start-up Check charge and start-up water fl ow.
LT1 Fault
Code 4
Water coil low
temperature limit
XReduced or no water fl ow in heating
Check pump operation or water valve operation/setting.
Plugged strainer or fi lter. Clean or replace..
Check water fl ow adjust to proper fl ow rate.
XInadequate antifreeze level Check antifreeze density with hydrometer.
XImproper temperature limit setting (30°F vs
10°F [-1°C vs -2°C]) Clip JW3 jumper for antifreeze (10°F [-12°C]) use.
XWater Temperature out of range Bring water temp within design parameters.
XXBad thermistor Check temp and impedance correlation per chart
LT2 Fault
Code 5
Air coil low
temperature limit
XReduced or no air fl ow in cooling
Check for dirty air fi lter and clean or replace.
Check fan motor operation and airfl ow restrictions.
Too high of external static. Check static vs blower table.
XAir Temperature out of range Too much cold vent air? Bring entering air temp within design parameters.
XImproper temperature limit setting (30°F vs
10°F [-1°C vs -12°C]) Normal airside applications will require 30°F [-1°C] only.
XXBad thermistor Check temp and impedance correlation per chart.
Condensate Fault
Code 6
XXBlocked drain Check for blockage and clean drain.
XXImproper trap Check trap dimensions and location ahead of vent.
XPoor drainage
Check for piping slope away from unit.
Check slope of unit toward outlet.
Poor venting. Check vent location.
XMoisture on sensor Check for moisture shorting to air coil.
XXPlugged air fi lter Replace air fi lter.
xXRestricted Return Air Flow Find and eliminate restriction. Increase return duct and/or grille size.
Over/Under
Voltage Code 7
(Auto resetting)
XXUnder Voltage
Check power supply and 24VAC voltage before and during operation.
Check power supply wire size.
Check compressor starting. Need hard start kit?
Check 24VAC and unit transformer tap for correct power supply voltage.
XXOver Voltage Check power supply voltage and 24VAC before and during operation.
Check 24VAC and unit transformer tap for correct power supply voltage.
Unit Performance Sentinel
Code 8
XHeating mode FP2>125°F [52°C] Check for poor air fl ow or overcharged unit.
XCooling Mode FP1>125°F [52°C] OR FP2<
40ºF [4ºC]) Check for poor water fl ow, or air fl ow.
No Fault Code Shown
XXNo compressor operation See "Only Fan Operates".
XXCompressor overload Check and replace if necessary.
XXControl board Reset power and check operation.
Unit Short Cycles
XXDirty air fi lter Check and clean air fi lter.
XXUnit in "test mode" Reset power or wait 20 minutes for auto exit.
XXUnit selection Unit may be oversized for space. Check sizing for actual load of space.
XXCompressor overload Check and replace if necessary
Only Fan Runs
XXThermostat position Ensure thermostat set for heating or cooling operation.
XXUnit locked out Check for lockout codes. Reset power.
XXCompressor Overload Check compressor overload. Replace if necessary.
XXThermostat wiring Check thermostat wiring at heat pump. Jumper Y and R for compressor operation
in test mode.
Only Compressor Runs
XXThermostat wiring Check G wiring at heat pump. Jumper G and R for fan operation
XX
Fan motor relay Jumper G and R for fan operation. Check for Line voltage across BR contacts.
XX Check fan power enable relay operation (if present).
XXFan motor Check for line voltage at motor. Check capacitor.
XXThermostat wiring Check thermostat wiring at heat pump. Jumper Y and R for compressor operation
in test mode
Unit Doesn’t Operate
in Cooling
XReversing valve
Set for cooling demand and check 24VAC on RV coil and at CXM/DXM board.
If RV is stuck, run high pressure up by reducing water fl ow and while operating
engage and disengage RV coil voltage to push valve.
XThermostat setup Check for ‘O’ RV setup not ‘B’.
XThermostat wiring Check O wiring at heat pump. Jumper O and R for RV coil ‘click’.
XThermostat wiring
Put thermostat in cooling mode. Check 24 VAC on O (check between C and
O); check for 24 VAC on W (check between W and C). There should be voltage
on O, but not on W. If voltage is present on W, thermostat may be bad or wired
incorrectly.
46
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Performance Troubleshooting
Performance Troubleshooting Htg Clg Possible Cause Solution
Insuffi cient capacity/ Not
cooling or heating
XXDirty fi lter Replace or clean.
XReduced or no air fl ow in heating
Check for dirty air fi lter and clean or replace.
Check fan motor operation and airfl ow restrictions.
Too high of external static. Check static vs. blower table.
XReduced or no air fl ow in cooling
Check for dirty air fi lter and clean or replace.
Check fan motor operation and airfl ow restrictions.
Too high of external static. Check static vs. blower table.
XXLeaky duct work Check supply and return air temperatures at the unit and at distant duct registers
if signifi cantly different, duct leaks are present.
XXLow refrigerant charge Check superheat and subcooling per chart.
XXRestricted metering device Check superheat and subcooling per chart. Replace.
XDefective reversing valve Perform RV touch test.
XXThermostat improperly located Check location and for air drafts behind stat.
XXUnit undersized Recheck loads & sizing. Check sensible clg. load and heat pump capacity.
XXScaling in water heat exchanger Perform scaling check and clean if necessary.
XXInlet water too hot or too cold Check load, loop sizing, loop backfi ll, ground moisture.
High Head Pressure
XReduced or no air fl ow in heating
Check for dirty air fi lter and clean or replace.
Check fan motor operation and air fl ow restrictions.
Too high of external static. Check static vs. blower table.
XReduced or no water fl ow in cooling Check pump operation or valve operation/setting.
Check water fl ow. Adjust to proper fl ow rate.
XInlet water too hot Check load, loop sizing, loop backfi ll, ground moisture.
XAir temperature out of range in heating Bring return air temperature within design parameters.
XScaling in water heat exchanger Perform scaling check and clean if necessary.
XXUnit overcharged Check superheat and subcooling. Re-weigh in charge.
XXNon-condensables in system Vacuum system and re-weigh in charge.
XXRestricted metering device. Check superheat and subcooling per chart. Replace.
Low Suction Pressure
XReduced water fl ow in heating.
Check pump operation or water valve operation/setting.
Plugged strainer or fi lter. Clean or replace.
Check water fl ow. Adjust to proper fl ow rate.
XWater temperature out of range. Bring water temperature within design parameters.
XReduced air fl ow in cooling.
Check for dirty air fi lter and clean or replace.
Check fan motor operation and air fl ow restrictions.
Too high of external static. Check static vs. blower table.
XAir temperature out of range Too much cold vent air? Bring entering air temperature within design parameters.
XXInsuffi cient charge Check for refrigerant leaks.
Low Discharge Air Temperature
in Heating
XToo high of air fl ow Check fan motor speed selection and air fl ow chart.
XPoor performance See ‘Insuffi cient Capacity’
High humidity XToo high of air fl ow Check fan motor speed selection and airfl ow chart.
XUnit oversized Recheck loads & sizing. Check sensible clg load and heat pump capacity.
47
Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc.
Troubleshooting Form
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I.O.M. or spec. catalog to
determine flow rate.
Look up pressure drop in
I.O.M. or spec. catalog to
determine flow rate.
Note: Never connect refrigerant gauges during startup procedures. Conduct water-side analysis using P/T ports to determine water
fl ow and temperature difference. If water-side analysis shows poor performance, refrigerant troubleshooting may be required. Connect
refrigerant gauges as a last resort.
01-2013
*97B00 *
97B00???????

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