LM Model Water Source Heat Pump

LM Model
Water Source Heat Pump
2 to 6 ton
The new fully featured LM with
two capacity scroll compressor
and electronically commutated
motor for best-in-class efficiency
and comfort.
N
EW
ASHRAE/AHRI/ISO 13256-1. English (I-P) Units Water Loop Heat Pump
LM 22.5
Part Load
MODEL
UP TO
UP TO
EER
COP
6.5
Full Load
UP TO
UP TO
EER
COP
19.3 5.6
Commercial Sales Catalog
fhp-mfg.com
1 | LM Model | Commercial Geothermal Heat Pumps
Table of Contents
MODEL NOMENCLATURE...........................................2
FHP MANUFACTURING..............................................2
ADVANTAGES OF FHP’s TECHNOLOGY.....................2
LM MODEL 024 – 070.................................................2
STANDARD FEATURES................................................2
Cabinet.................................................................2
Quiet Operation ...................................................3
Serviceability .......................................................3
Unit Configurations...............................................3
Filter Racks and Unit Options...............................3
Optional MERV 13 Filter........................................3
FAN MOTOR OPTIONS................................................4
Constant Torque ECM...........................................4
Constant Airflow ECM...........................................4
Hanging Brackets..................................................4
Water Connections................................................4
Two-Position Water Valve......................................4
Refrigerant Circuit................................................5
Evaporator Coil.....................................................5
Blower Housing.....................................................5
Unit Protection Module.........................................6
UPM Control Board Features............................. 6-7
UNIT OPTIONS ...........................................................7
Hot Gas Reheat..................................................... 7
Hot Gas Reheat Control Options......................... 8
Special Considerations........................................ 8
Low Temperature Well Water............................... 8
Indoor Pool Dehumidifying During Winter Months..... 8
Psychometric Chart............................................. 8
DDC Controls........................................................9
Combo Controls............................................... 9-10
Additional Factory Installed Options......... 10
SYSTEMS....................................................................11
Water Source Cooling Tower/Boiler Systems.......11
Geothermal Systems............................................11
Earth Coupling Options........................................11
Vertical Ground Loop System............................. 12
Horizontal Ground Loop System......................... 12
Surface Water, Lake or Pond System.................. 13
Well Water System.............................................. 13
TYPICAL HEAT PUMP OPERATING MODES............. 13
Cooling Mode...................................................... 13
Heating Mode...................................................... 13
TYPICAL UNIT INSTALLATION.................................. 14
Water-to-Air Heat Pump Cycle - Cooling.............. 14
Water-to-Air Heat Pump Cycle - Heating.............. 14
Unit Location....................................................... 14
Vertical Unit Installation...................................... 14
Subject to change without prior notice.
Horizontal Unit Installation ................................ 15
Ductwork and Sound Attenuation Considerations.....15
Piping.................................................................. 16
Condensate Drain Piping.................................... 16
Thermostats.................................................... 16-17
Hose Kits..............................................................17
Operating Limits­– Cooling & Heating..................17
UNIT SELECTION...................................................... 18
PHYSICAL DATA........................................................ 19
HORIZONTAL CABINET CORNER WEIGHTS............20
CERTIFIED PERFORMANCE DATA............................20
CAPACITY DATA ....................................................... 21
LM024 – Part Load............................................. 21
LM024 – Full Load............................................... 22
LM036 – Part Load.............................................23
LM036 – Full Load..............................................24
LM048 – Part Load.............................................25
LM048 – Full Load..............................................26
LM060 – Part Load............................................. 27
LM060 – Full Load..............................................28
LM070 – Part Load.............................................29
LM070 – Full Load...............................................30
Water Pressure Drop......................................... 31
Antifreeze Correction Data............................ 31
ELECTRICAL DATA....................................................32
Constant Torque and Constant CFM ECM..........32
Factory Installed Electric Heat Option................32
Units with EH option – Constant Torque ECM....33
Units with EH option – Constant CFM ECM........33
BLOWER PERFORMANCE....................................... 34
ECM Constant Torque.........................................34
ECM Constant CFM.............................................35
VERTICAL UNIT DIMENSIONS................................. 36
Vertical Top Discharge Water Source Heat Pump... 36
LM024................................................................. 37
LM036/048.........................................................38
LM060/070.........................................................39
HORIZONTAL UNIT DIMENSIONS....................... 40-42
Horizontal Water Source Heat Pump.............40-42
LM024 – Right Hand...........................................43
LM024 – Left Hand.............................................44
LM036/048 – Right Hand....................................45
LM036/048 – Left Hand......................................46
LM060/070 – Right Hand.................................... 47
LM060/070 – Left Hand......................................48
Specification Guide....................................... 49-52
NOTES................................................................. 53-54
fhp-mfg.com | 2
Model Nomenclature
LM
024
1
VT
C
F
L
T
T
A
SERIES:
LM
REVISION LEVEL:
A -Current
NOMINAL CAPACITY:
024, 036, 048, 060, 070
FAN/MOTOR OPTIONS:
A - Constant Airflow ECM
T - Constant Torque ECM
VOLTAGE DESIGNATION:
1 - 208-230/1/60
2 - 265/1/60
3 - 208-230/3/60
4 - 460/3/60
DISCHARGE AIR CONFIGURATION:
T - Top (VT only)
S - Straight (HZ only)
E - End (HZ only)
CABINET CONFIGURATION:
HZ-Horizontal
VT-Vertical
COAX OPTIONS:
C -Copper
N -Cupro-Nickel
RETURN AIR CONFIGURATION:
L -Left
R -Right
WATER CONNECTIONS:
F -Front
FHP Manufacturing
LM Model 024 - 070
Specializing in efficient green technology for commercial heating and cooling products, FHP is one of
the leading manufacturers of Geothermal and Water
Source heat pumps, which assures that you are
buying a unit you can trust. We are part of Bosch
Thermotechnology Ltd., a Robert Bosch Group unit
dedicated to providing highly efficient heating and
cooling solutions to the private and public sector.
„ 5 Models 2 through 6 tons
FHP headquarters has a state of the art facility with
the latest manufacturing technology available. Each
unit is factory tested according to Bosch quality
standards in order to ensure our customers the
highest level of satisfaction and comfort. We carefully select our suppliers in order to equip our
products with the best components available.
Advantages of FHP Technology
„ Best in class efficiency
„ Best in class sound
„ 2-stage capacity compressor
„ Field configurable supply air
„Multiple humidity
control options
available
„Simple installation
and operation
„ Horizontal, Vertical
The LM Series is a cost-effective two stage water
source heat pump designed for commercial retrofit
and new construction applications.
Standard Features
Cabinet
The LM unit cabinetry is constructed using heavygauge, G90 galvanized steel. This steel provides
superior corrosion protection for units located indoors.
All interior surfaces are lined with 1/2" thick, 1.5 lb./cu.
ft. density, Micromat insulation for thermal insulation
and acoustical attenuation. This insulation is non-combustible, non-hydroscopic and does not support fungal
growth. Insulation meets UL 181 erosion certification,
NFPA 90A and 90B for fire protection and is certified to
meet the GREENGUARD Indoor Air Quality Standard
for Low Emitting Products.
Protection against corrosion is a feature in the LM series.
A stainless steel drain pan will last the lifetime of the unit
and resist corrosion and cracking that may occur with
steel or plastic materials.
Subject to change without prior notice.
3 | LM Model | Commercial Geothermal Heat Pumps
Schrader Valves
Hanging Brackets
(Standard for Horizontal units)
MERV 8 or MERV 13
Filter Option
2" 4-Sided
Filter Rack
Closed-cell Foam
insulation (Optional)
Water Connectors
2-Way Valve with
Actuator Option
Standard Features
Serviceability
Quiet Operation
All units are designed to be serviced from the front of
the unit. Schrader valves for high and low pressure
gauges and the electrical box components are easily
accessible for diagnosing and servicing the unit.
All panels are insulated with 1/2" thick, 1.5 lb./cu.ft.
density micromat fiberglass insulation as standard
for both thermal insulation and noise reduction.
Noise reduction is a critical consideration of the unit
design. All LM units have a unique floating base. The
Compressor is mounted on a heavy steel plate which
rests on a high density rubber pad on the base of the
unit. In addition, compressors are mounted on rubber
grommets. This double isolation, unique to FHP, is
standard in all LM series units preventing vibration and
noise transmission from the compressor to the unit
structure resulting in exceptionally quiet operation.
Insulated bulkheads in all units, separate the compressor section from the blower section, allowing
the unit to be serviced during operation.
Large removable panels aid in servicing the unit, when
necessary. Separate electrical knockouts in the unit
corner post allow for easy and safe routing of high and
low voltage lines to the inside of the cabinet.
Unit Configurations
The LM offers an optional 1/2" thick, closed-cell foam
insulation to help aid indoor air quality (IAQ) and to
further attenuate low frequency noise from the
compressor compartment. The closed-cell foam
insulation option is available in all unit sizes.
All units are available in horizontal and vertical
configurations. Additionally, several options of
return air and supply air are offered as standard,
providing configuration flexibility.
Filter Racks and Unit Options
For additional sound attenuation, an optional
compressor blanket is available on unit sizes.
Units come standard with a 1" MERV 5 construction
filter. A 2" four-sided filter rack and pleated filter is
optional and greatly improves air filtration. Filter
doors allow for easy routine maintenance and
changing of the air filter. A 1" return duct collar is
integral to the filter rack eliminating the need for
field mounted duct collars.
Optional MERV 13 Filter
Standard
Subject to change without prior notice.
Optional
The optional MERV 13 filter is the optimal choice for
premium air filtration on commercial HVAC projects.
The MERV 13 filter is a cost effective way of upgrading
fhp-mfg.com | 4
air quality while maintaining low pressure drop and
sustaining long service life. This filter effectively
removes 96% of airborne matter, such as fine particulates, bacteria, smoke, gases and odors, and allergens
including dust mites, pollen, mold spores, dust and
smog. ECM motors can handle higher external pressure drops and are required when using high efficiency MERV 13 filters.
Fan Motor Options
Constant Torque ECM (Standard)
The LM’s constant-torque blower motor option offers
improved efficiency (up to 33%) over the standard
PSC motor. This Constant Torque Motor is similar in
function to a PSC, but can handle up to 1 in.w.g.
external static pressure making it a wise choice for
high filtration applications. The 460 Volt constant
torque motors do not require a neutral wire.
Constant Airflow
ECM Option
Constant Torque
ECM Option
Constant Airflow ECM
The LM’s new high efficiency Constant Airflow ECM
option, available in 1/3hp to 1hp, provides constant
airflow in a wide static pressure range up to 1 in.w.g.
These motors are a great choice in high filtration
applications, such as MERV 13. The Constant Airflow
ECM motor has a soft start/stop feature, keeping
noise to a minimum.
Water Connections
All water connections are heavy duty bronze FPT fittings
securely fastened to the unit corner post. This allows
connecting to a flexible hose kit without the use of a
backup wrench making for easier, faster installation.
Two-Position Water Valve (internal)
The two-position motorized water valve is optional on
all unit sizes and is a great energy savings option. The
valve opens to allow 100% fluid flow through the coaxial
heat exchanger only when there is a call for cooling or
heating. Closing off fluid flow to the unit when there is
no call for cooling or heating reduces system operating
costs, when using variable speed pumping, by reducing
the speed of the primary loop pumps.
Internal Pump
The internal pump cannot be used in conjunction with
the two position water valve. The internal pump option
is an internally mounted on/off circulating pump.
Smart Start
The SmartStart control assists the unit's start up an
improves start up efficiency as much as 65%. with ease
of compressor start up. SmartStart is for single phase
scroll compressors.
„ Reduce wear and tear on compressor during start up
„ Integrated current limit
„ Rated operational voltage: 230 VACrms, 50/60 Hz
„ Rated operational current: up to 32A: AC-53b
„ Integral bypassing of semiconductors
Passive Dehumidification can be achieved with the
Constant Airflow ECM by reducing nominal airflow
by 15%. This control feature lowers air coil temperature and prevents over-cooling of the space when in
dehumidification mode. The 460 V constant airflow
ECM requires a neutral wire.
„ Built-in transient over-voltage protection
„ Under-voltage protection after ramp up
„ Factory installed or field installed accessory
„ EMC Compliant
„ Optional auxiliary alarm relay output
Hanging Brackets
All horizontal units come standard with hanging
bracket kits for suspending the unit from field
supplied hanger rods. These kits include heavy duty
steel brackets and rubber grommets for sound and
vibration isolation from the building structure.
„ Relay Protection
„ UL, cUL listed
„ Optimized algorithm for high pressure starts
„ Integrated protection against short-cycling.
Subject to change without prior notice.
5 | LM Model | Commercial Geothermal Heat Pumps
Coax Coil
Two Capacity
Scroll Compressor
Refrigerant Circuit
LM Series units are designed using the optimum
combination of compressor, water and air coils to
provide peak performance.
LM Series units are rated to withstand 600 PSIG
working refrigerant pressure and 400 PSIG working
water pressure.
Heavy duty heat pump compressors are used in all
units. These high efficient two capacity compressors
unload when the demand is low in heating or cooling;
matching your capacity requirements at the highest
efficiency level possible. At the same time delivering
the best comfort possible for both latent and sensible
requirements. When demand is high the compressor
switches to full capacity matching the load demand for
heating or cooling.
Refrigerant to water heat exchangers are coaxial
tube-in-tube type providing a robust construction,
ensuring years of trouble free operation. Coaxial coils
are selected and designed for peak performance,
offering the best combination of low water pressure
drop and maximum heat transfer in both the cooling
and heating modes. Standard coaxial coils have a
copper interior water tube and a steel outer shell.
Optional Cupro-Nickel coils are available for
applications where the water is of lower quality.
In geothermal applications where fluid temperatures
can drop below the dew point of the surrounding air,
optional insulation is available to prevent water coils
and refrigerant piping from sweating.
Subject to change without prior notice.
Duo Guard – Tin Plated
with Coated Fin
Evaporator Coil (Optional)
TXV Valve (Standard)
A pilot operated four-way reversing valve in the
refrigeration circuit allows the unit to operate in
either the heating or cooling mode. All FHP units
have the reversing valve energized in cooling mode.
This will ensure you are not left without heat in the
middle of winter, should the reversing valve coil fail.
Evaporator Coil
LM comes standard with a copper coil aluminum fin
evaporator coil. These evaporator coils employ lanced
fin and rifled tubing for maximum heat transfer. Large
face areas result in lower face velocity reducing sound
while ensuring high latent heat removal for maximum
dehumidification in the cooling mode.
Available as an option is the Duo-Guard evaporator
coil protection. Duo-Guard Protection® - Tin
Electro-Plated Copper Tubing with High-Tech
Polymer Coated Aluminum Fins will protect the
evaporator coil from all forms of corrosive elements
in the airstream.
Refrigerant flow to the air coil is metered by a
Bi-Flow Balance Port Thermostatic Expansion
Valve (TXV) as standard in LM units. TXV’s provide
unit optimization and a more stable control over a
wider range of operating conditions. This is
especially important with two capacity scroll
compressor technologies.
Blower Housing
A removable inlet ring is a standard feature of the
blower housing on all unit sizes. The removable
inlet ring helps facilitate motor removal without
having to remove the fan housing from the cabinet.
fhp-mfg.com | 6
Blower Housing
(with Removable Inlet Ring
for Serviceability)
Unit Protection Module
Each LM unit is factory provided with a Unit Protection
Module (UPM) that controls the unit operation and
monitors the safety controls that protect the unit.
Powered by a standard 75 VA transformer, the UPM
interfaces with the thermostat or direct digital
controller. The main purpose of the UPM is to protect
the compressors by monitoring the different states of
switches and sensors. This module provides time
delays and protects the unit against freezing of the
water to refrigerant and air to refrigerant heat
exchangers as well as condensate overflow when the
appropriate sensors are installed.
Standard safety controls include the following:
„High pressure switch located in the refrigerant
discharge line.
„Low pressure switch located in the unit refrigerant
suction line.
„Standard low fluid temperature (freeze) protection sensor. The freeze protection sensor, located
on the refrigerant liquid line entering the coaxial
heat exchanger is designed to disable compressor
operation when the unit is in the heating mode,
should the refrigerant temperature fall below
either 30°F (-1.1°C) or 15°F (-9.4°C).
„Condensate overflow protection sensor is standard
and factory mounted in the drain pan of the unit.
„Low air coil temperature (freeze) protection
sensor disables the compressor when the refrigerant entering the air coil drops below 30°F (-1.1°C).
UPM Control Board
UPM Control Board Features
„Anti-Short Cycle Timer—5 minute delay on break
timer to prevent compressor short cycling.
„Random Start—Each controller has a unique
random start delay ranging from 270 to 300
seconds after power is applied to the board. This
will prevent the simultaneous start of multiple
units after a power outage.
„Low Pressure Bypass Timer—The low pressure
switch is bypassed for 120 seconds after a call for
compressor operation to prevent nuisance low
pressure lockouts during cold start-up in the
heating mode.
„Brownout/Surge/Power Interruption Protection—
Prevents compressor operation should the voltage
drop below 10% of unit rated value. The unit will
restart once the voltage is within tolerance and
the random start has timed out.
„Malfunction (Alarm) Output—The controller has a
set of contacts for remote fault indication. This
can be either a steady output or can be set to
pulse with the fault code. Two connections are
available - one to provide a 24 volt output, the
other to provide a dry contact.
„Test Service Mode—A dip switch setting is provided to reduce all time delay settings to 10
seconds maximum during troubleshooting for
verification of unit operation.
„L.E.D. Fault Indication—Two L.E.D. indicators are
provided as follows:
„Green: Power L.E.D. indicates 18 – 30 VAC present
at the board.
Subject to change without prior notice.
7 | LM Model | Commercial Geothermal Heat Pumps
„Red: Fault indicator with blink codes identifying
the particular fault. This information is available
via the malfunction (alarm) output contacts.
1 Blink - High Pressure
2 Blinks - Low Pressure
3 Blinks - Low Fluid Temperature (Freeze Protection)
4 Blinks - Condensate Overflow
5 Blinks - Brownout condition
„Intelligent Reset—If a fault condition is initiated,
the 5 minute delay on break time period is initiated and the unit will restart after this delay
expires. The UPM is configurable for either 2 or 4
fault occurrences before going into a hard lockout.
The selection is made through a dip switch setting
on the board. If the fault condition still exists or
reoccurs twice or four times within one hour, the
unit will go into a hard lockout and requires a
manual lockout reset. A condensate overflow fault
will, however, put the unit into a hard lockout
immediately.
Typical unit control is by a wall mounted thermostat
that senses temperature in the occupied space. By
utilizing a humidistat in addition to the thermostat,
LM units with Hot Gas Reheat are able to control
the humidity levels in the space as well. The Hot Gas
Reheat option allows cooling and dehumidification
to satisfy both the thermostat and humidistat while
preventing over-cooling of the space while in the
dehumidification mode.
Once the thermostat reaches set point temperature,
and is above humidity set point, the unit controller will
energize the reheat valve operating the unit in hot gas
reheat mode, first cooling and dehumidifying, then
reheating the air (using hot refrigerant gas) before
delivering it to the space, usually 2° to 5°F below room
temperature. The unit operates like a dehumidifier by
reheating the air along a constant sensible heat line,
while the relative humidity of the leaving air is reduced.
This option offers significant energy savings over
reheating air with electric heating coils.
Hot Gas Reheat
The moisture removal capacity of a specific heat pump
is determined by the unit latent capacity rating. A heat
pump’s latent capacity can be determined by reviewing
the heat pump specification data sheets. Depending
upon the entering water and air conditions, a total and
sensible capacity can be interpolated from the data
sheets. Subtracting sensible capacity from total
capacity yields latent capacity. Dividing the latent
capacity by 1069 converts the amount of moisture
removal from BTU/Hr. to Pounds Per/Hr.
Hot gas reheat (HGR) allows the user to not only
control space temperature, but also humidity levels
within the conditioned space. Excessive moisture in
the space can promote mold growth leading to damage
in the structure or interior surfaces, as well as reducing
the air quality and creating an unhealthy environment.
A hot gas reheat valve and a reheat coil are included
in the refrigerant circuit. The refrigerant circuit in
the cooling and heating modes are identical to a
standard heat pump.
„Lockout Reset—A hard lockout can be reset by
turning the unit thermostat off and then back on
or by shutting off unit power at the circuit breaker.
The method of reset is selectable by the dip
switch on the board.
Additional Unit Options
Possible causes of excess humidity could be a byproduct of the unit having to operate under a widely varying
load, an oversized short cycling unit, a high percentage
of unconditioned outside air being introduced into the
space, a high latent load in the space or any location
where humidity infiltration is a problem.
Subject to change without prior notice.
In the reheat mode, the compressor discharge gas
is diverted through the reheat valve to the reheat
coil which is located downstream of the cooling
coil. The superheated refrigerant gas reheats the
air leaving the cooling coil. The hot refrigerant gas
then passes though the water to refrigerant coil
where it is condensed to a liquid. From this point
fhp-mfg.com | 8
Indoor Pool Dehumidifying
During Winter Months
the rest of the cooling cycle is completed as in a
regular heat pump. There are check valves to
prevent refrigerant flow into the reheat coil during
standard cooling/heating cycles.
It is important to remember that when in the reheat/
dehumidification mode the heat pump is cooling
and reheating. A secondary means of heating the
space during the dehumidification mode should be
provided. For indoor pool environments, the indoor
space temperature should be kept at least two (2)
degrees F above the pool water temperature. If this
is not done the warm pool water attempts to heat
the space and the humidity levels increase
exponentially. The heat pump is normally sized to
handle the design latent load moisture removal. A
second heat pump or resistance heat should be
provided to handle the structure’s shell loss load.
Duo-Guard Evaporator Coil Option is required for
this type of application.
Hot Gas Reheat Control Options
There are several ways to control heat pumps with hot
gas reheat. You should choose the means that best
suits your specific application. Please refer to the Hot
Gas Reheat wiring diagrams for typical thermostat
wiring. Most heat pump compatible thermostats in
conjunction with a humidistat are acceptable for use,
(Note: “O” output for reversing valve energized in
cooling mode is required.) Combination thermostat/
humidistats are also available.
Special Considerations
Some applications require special attention to maximize the performance of the hot gas reheat function:
Caution
„Low Temperature Well Water
Protective coatings are highly recommended for
all pool applications, due to the highly corrosive
chemical environment.
„Indoor Pool Dehumidifying During Winter Months
(Re: Heating Mode)
Consult the factory for special application
considerations.
Psychometric Chart
85
85
Low Temperature Well Water
65
60
80
70
70
%
90
Lvg. Coil
65
Reheat
60
55
50
25%
60%55
45
50%
50
40
40%
45
40
15%
35
30%
35
VE HUM
8% RELATI
20%
10%
30
IDITY
25
20
6%
IDITY
RELATIVE HUM
10
0
4%
2%
50
55
Chart by: HANDS DOWN SOFTWARE, www.handsdownsoftware.com
60
°F
60
65
%
%
70
40
45
75
70
55
ATU
RE
-
75
Entering
45
40
ULB
80 TEM
PER
80
75
50
35
85 W
ET
B
80
DEW POINT TEMPERATURE - °F
When low temperature well water is utilized as the
water source (below 55°F), a means of establishing
two flow rates, one for the cooling/reheat mode and
one for heating mode is recommended. In the cooling
mode at low entering water temperatures and
standard flow rates, discharge pressures and corresponding discharge gas temperatures are relatively
low. At these conditions, when the reheat mode is
initiated, the low temperature discharge gas can
reduce reheat capacity. A means to reduce the water
flow rate and elevate the discharge pressure/temperature in cooling/reheat mode should be provided.
Conversely, at low entering water temperatures in the
heating mode, system suction pressure is reduced
causing a loss in heating capacity. A means of providing higher flow in the heating mode should be supplied. The simplest way to accomplish the above is to
install water regulating valves.
65
70
75
80
85
90
95
100
DRY BULB TEMPERATURE - °F
Figure 1
Subject to change without prior notice.
9 | LM Model | Commercial Geothermal Heat Pumps
DDC Control Board
DDC Controls (Option)
„Space temperature
The optional FHP factory mounted DDC Controller is
preprogrammed and installed in the unit with the
Unit Protection Module (UPM) to be job site ready.
The unit will operate in a 100% stand-alone control
mode or connect to a Building Automation System
(BAS) using open protocols BACnet, Modbus, N2 or
LonWorks (with an optional Lon card). Stand-alone
DDC modules must use remote intelligent sensors
and are to be programmed by the FHP BACView
controller only.
„Occupied heating and cooling set points
„Continuous or cycle fan during occupied mode
„Command for occupied or unoccupied mode
„Command for override of the unoccupied mode
(unit resorts to occupied set points)
„Set point adjustment
Zone temperatures, leaving air temperatures and water
temperatures can be monitored from the central
control computer and unit fault indication displayed.
To complement the controller, FHP offers a line of
intelligent space sensors, which provide precision
measurement and communication capabilities in an
attractive low profile enclosure. A hidden communications jack provides access to the HVAC control
system for commissioning and maintenance.
Available inputs/outputs include:
Models available include:
„Discharge air temperature
„The RS Standard which has no local temperature
set point adjustment.
„Leaving water temperature
„Fan run time
„Override time remaining
„Night setback status
„Percent of units cooling
„The RS Plus offers a local set point adjustment
and override to an occupied mode and LED
indication of current status.
„The RS Pro has a large LCD display and easy-touse occupant controls for set point adjustment.
„Percent of units heating
„Cooling set point
„Heating set point
„Status of all the alarms
Subject to change without prior notice.
A BACView hand held diagnostic tool is available to
allow local access to display and modify user defined properties without any computer software.
fhp-mfg.com | 10
Combo Base
DDC Control
Plus DDC
Control/Sensor
Combo Controls
The Combo Pro DDC control/sensor has a LCD screen
that can display the current temperature and set temperature. It can also display relative humidity and CO2 settings
as well as their current readings. It comes with a button
for additional information that can be displayed.
Combo Pro DDC
Control/Sensor
Additional Factory
Installed Options
„ 5, 10, 15, 20 Kw Electric Heaters
„ Differential Pressure Switch
„ Energy Management Switch (on / off)
You can order it as:
„ Blower Motor Current Sensor
„ Temperature setting only
„ Compressor Monitor Relay
„ Temperature with relative humidity settings
„ Freeze Sensor Antifreeze Setting
„ Temperature, relative humidity, and CO2 settings
„ Pump Relay
„ Phase Monitor
The Plus DDC control/sensor has a little different look
to it. It has a occupied indicator that identifies the
control to be operating in occupied conditions. It
comes with a slide bar of for some manual temperature control in the occupied mode +/- setting can be
adjusted during commissioning.
„ Flow Proving Switch
„ 40 Amp Disconnect Switch (1 or 3 phase)
„ Comfort Alert Module
„ Start Assist Kit
„ Two Way Solenoid Valve
„ Circulating Pump
The Combo Base DDC control is a read only sensor
and has no adjustments to any set point.
„ Wire for 208 Volt
It can be ordered as:
„ Temperature sensor
„ Temperature and relative humidity sensor
Subject to change without prior notice.
11 | LM Model | Commercial Geothermal Heat Pumps
Systems
LM Series may be used in a variety of different
applications depending on the system design. An
overview of tower/boiler and geothermal systems is
given below. There could be several variations and
combinations of these systems.
Cooling Tower/Boiler Systems
Water source heat pumps with cooling tower/boiler
systems have been used for many years and are
recognized as having a low installation cost and
providing more energy efficient operation than most
other systems on the market.
In a typical building, each office or space would
receive its own heat pump. This ensures that the
unit will independently satisfy the heating or cooling
requirements for that space irrespective of the
requirements of any other space. Unlike some other
systems, this offers individual control and enhanced
comfort in all areas.
All the units are connected to a common water loop
containing, in addition to the heat pumps, a cooling
tower, boiler, a primary and standby pump and a
loop water temperature controller. In the summer
cooling mode, the units are cooling and rejecting
heat to the water loop. This heat is then rejected to
the atmosphere through a cooling tower. In winter,
heat is taken from the loop and, together with the
compressor’s heat of compression, used to heat the
space. The heat removed from the loop is then
replenished by the boiler. The loop water temperaSubject to change without prior notice.
ture controller will keep the fluid within certain
temperature limits typically 70°F in winter and 85°F
in summer by cycling either the cooling tower or
boiler operation.
In today’s modern buildings the interior core usually
has a net cooling requirement year round irrespective of the outside temperature. This is due to the
internal heat gains from people, office equipment
and lighting. The heat from heat pumps operating in
cooling is rejected to the common water loop and is
absorbed by heat pumps on the building’s perimeter
that are in the heating mode. In effect the system is
transferring energy around the building areas from
where it is in excess to those areas where it is
needed. In many instances we find a balanced
system where the heat generated in the interior
space is sufficient to heat the perimeter, resulting in
neither the cooling tower nor boiler operating. This
concept, unique to a water source system, provides
the most energy efficient system on the market.
Geothermal Systems
The earth has a tremendous capacity of storing thermal
energy, which can be utilized to heat or cool a building.
A geothermal system offers all the benefits of a
cooling tower and boiler system with the additional
advantage of having overall greater energy efficiency. As the cost of energy increases, geothermal
installations are becoming the system of choice by
developers and design engineers.
There are several alternative methods of utilizing the
energy contained in a geothermal system, giving the
design engineer several options for selecting the
one that is right for a particular application.
Earth Coupling Options
Ground Loop Systems (Closed Loop)
Lengths of high density polyethylene piping are buried
in the earth either in vertical bore holes or horizontal
trenches depending on the space available.
fhp-mfg.com | 12
Fluid from the loop inside the building circulates
through these pipes either rejecting heat to the
ground when there is a net cooling requirement or
absorbing heat from the ground when heating is the
dominant requirement.
The temperature of the earth below 6 feet is relatively constant and is not affected by the ambient
temperature. For this reason, the ground temperature is cooler than the summer ambient and warmer
than the winter ambient in most regions. Geothermal systems are able to operate effectively in extreme ambient conditions exceeding 100°F in
summer and -30°F in winter. This is one of the
reasons why geothermal systems have such an
advantage over other systems. An additional advantage is that no fossil fuels are used, reducing the
carbon emission of the building.
This method is used mainly in commercial buildings
or where space for a loop field is limited. Vertical
holes 100 to 400 feet deep are drilled in the ground,
and a single loop of high density polyethylene pipe
with a U-tube at the bottom is installed. The bore
hole is then sealed with grout to ensure good
contact for heat transfer with the soil. The size of
the project will determine how many bore holes are
required. The vertical ground loops are then connected to a horizontal header pipe that carries fluid
to the building and circulated to each heat pump.
The Earth’s temperature is stable below the surface
which is an advantage for this system and provides
for the greater efficiency. Vertical ground loop fields
may be located under buildings or parking lots. The
life expectancy is in excess of 50 years.
Horizontal Ground Loop System
Even in areas which are cooling or heating dominant
a hybrid system can be used with a downsized
cooling tower or boiler. This system will reduce the
installed cost significantly with only a modest
impact on overall operating efficiency.
Geothermal systems may cost more to install but the
savings in energy and low maintenance costs more
than off set this with payback times typically five
years or even less.
Vertical Ground Loop System
This type is cost effective on smaller projects or
where there is sufficient space for the loop field.
Trenches, three to six feet deep are dug in which a
series of high density polyethylene pipes are laid.
These loops are manifolded and connected to the
loop inside the building which feeds the heat
pumps. The fluid is then circulated, absorbing or
rejecting heat to the earth depending on the requirement for heating or cooling.
Subject to change without prior notice.
13 | LM Model | Commercial Geothermal Heat Pumps
Typical Heat Pump System
Surface Water, Lake or Pond System
is pumped directly from the source into the geothermal unit and then discharged either into a return well
or a body of water. The water quality is unaffected
other than a change in the temperature. Refer to the
installation manuals for water quality guidelines.
Typical Heat Pump Operation
Cooling Mode
In the cooling mode, hot high pressure refrigerant
gas is pumped from the compressor to the water-torefrigerant heat exchanger via the reversing valve.
This type of design is economical when a project is
located near a body of water. Fluid circulates through
polyethylene piping in a closed system, just as it does
through ground loops, but in this case, underwater. The
pipes may be coiled in a slinky to fit more surface into a
given amount of space. The lake needs to be a minimum size and depth depending on the building load.
Lake loops have no adverse impact on the aquatic
system. Specialized lake heat exchangers are also
available for this application. New technology is emerging for stainless steel and titanium heat exchangers.
Water, or an anti-freeze solution, flowing through the
water-to-refrigerant heat exchanger transfers heat from
the refrigerant to the fluid raising the fluid temperature
while condensing the hot gas into a liquid. This liquid
refrigerant then flows through a metering device,
where the refrigerant is expanded to a cold liquid, to
the air-to-refrigerant heat exchanger coil.
The air-to-refrigerant heat exchanger cools and dehumidifies air by evaporating the liquid refrigerant. The
cooling cycle is completed when the refrigerant flows
as a low pressure gas through the reversing valve and
back to the suction side of the compressor.
Well Water System
Cool dehumidified air is circulated to the space
maintaining comfort conditions.
Heating Mode
During the heating mode, the high pressure refrigerant
gas is pumped from the compressor to the air-to-refrigerant heat exchanger coil via the reversing valve.
In the air-to-refrigerant heat exchanger coil, the heat
is removed by the air that passes over the coil
surface, and the hot gas condenses into a liquid.
This type of installation is only possible if there is
sufficient ground water available in a well. The water
must be of good quality. Local codes may limit the use
of this system in certain areas. The arrangement is
referred to as an open system which means that water
Subject to change without prior notice.
The heated air is ducted to the space and provides
heating for the building.
The refrigerant liquid then flows through a metering
device to the water-to-refrigerant heat exchanger.
fhp-mfg.com | 14
Basic Refrigeration Cycle
Cycle
Typical
Installation
BasicUnit
Refrigeration
Water-to-Air Heat Pump Cycle — Cooling
Cool Refrigerant Gas
Air to
Refrigerant
Heat
Air
to
Exchanger
Refrigerant
Cool Refrigerant Gas
Cool
Refrigerant
Gas
Thermal
Heat
Expansion
Valve Exchanger
Loop Fluid
Vertical Unit Installation
Cool
Refrigerant
Gas
Thermal
Expansion
Warm Liquid
Refrigerant
Valve
Cold Liquid Refrigerant
WarmWater
Liquid Refrigerant
to
Cold Liquid Refrigerant
Loop Fluid
Loop Fluid
Loop Fluid
Loop Fluid
Loop Fluid
Refrigerant
Heatto
Water
Exchanger
Refrigerant
Cool
Refrigerant Gas
ReversingValve
Cool
Refrigerant
Gas
Hot
Refrigerant
ReversingValve
Gas
Compressor
Hot
Refrigerant
Gas
Compressor
Hot Refrigerant Gas
Heat
Exchanger
Hot Refrigerant Gas
Hot Refrigerant Gas
Water to Air Heat Pump Cycle - Cooling Mode
Hot Refrigerant Gas
Air is cooled by evaporating cold refrigerant and the removed heat is deposited into the water loop
Water to Air Heat Pump Cycle - Cooling Mode
Air is cooled by evaporating cold refrigerant and the removed heat is deposited into the water loop
Water-to-Air Heat Pump Cycle — Heating
Hot Refrigerant Gas
Air to
Refrigerant
Heat
Air
to
Exchanger
Refrigerant
Heat
Thermal
ExpansionExchanger
Loop Fluid
Hot Refrigerant Gas
Hot
Refrigerant
Gas
Hot
Refrigerant
Gas
Valve
Thermal
Expansion
Cold Liquid Refrigerant
Valve
Warm Liquid Refrigerant
Cold Liquid Refrigerant
Warm Liquid Refrigerant
Loop Fluid
Loop Fluid
Loop Fluid
Loop Fluid
Loop Fluid
Water to
Refrigerant
Water
Heatto
Refrigerant
Exchanger
Heat
Exchanger
Cool Refrigerant Gas
Cool Refrigerant Gas
Cool
Refrigerant Gas
ReversingValve
Cool
Refrigerant Gas
Hot
ReversingValve
Refrigerant
Gas
Compressor
Hot
Refrigerant
Gas
Compressor
Hot Refrigerant Gas
Hot Refrigerant Gas
Water, or an anti-freeze solution, circulates through
this heat exchanger and is cooled by the evaporating
refrigerant which evaporates into a gas. The heating
cycle is completed when the refrigerant flows as a
low pressure gas through the reversing valve and
back to the suction side of the compressor.
Unit Location
Any mechanical device will, at some point in time
require servicing and repair.
With this in mind sufficient space must be provided
around the unit for service personnel to perform
maintenance or repair.
Units are not designed for outdoor installation. Avoid
locations where the unit may be exposed to freezing
conditions or where the humidity levels could cause
condensation on the unit panels, for example, when
exposed to outdoor ambient conditions.
Figure 3
Water to Air Heat Pump Cycle - Heating Mode
Air is heated by condensing hot refrigerant and heat is aborbed from the water loop
Water to Air Heat Pump Cycle - Heating Mode
Air is heated by condensing hot refrigerant and heat is aborbed from the water loop
Vertical units are normally installed in a closet or
mechanical plant room.
If installed in a closet or other confined space,
ensure adequate space for return air to the unit.
Sufficient space must be provided for filter replacement and access to the compressor and blower for
service.
Units should be set on a piece of rubber, neoprene or
other vibration absorbing material at least 1/3" to 1/2"
thick. The pad should extend 3/4" over the entire base of
the unit.
Avoid direct line of sight to the unit. Install a sound
baffle over any door that has a return air grille.
Subject to change without prior notice.
15 | LM Model | Commercial Geothermal Heat Pumps
Typical Unit Installation
Ductwork and
Sound Attenuation Considerations
Lining the first five feet of
supply duct reduces noise
Turns attenuate
blower noise
Take-offs should be at
least five feet away from
the plenum
Supply Air Ducting
Horizontal Unit Installation
Horizontal units are typically suspended above the
ceiling by four (field supplied) 3/8" threaded rods
fastened to the unit by the factory supplied hanger
bracket kits. The kits include rubber isolators to help
prevent transmission of vibration and noise to the
building structure. Units should be located directly below
a structural member, so that it is securely anchored.
A horizontal unit should be positioned to allow for
removal of the filters and access panels. Allow at least
18" clearance on each side of the unit for service and
36" in front of the unit for maintenance access. The
filter needs to be slid out and sufficient space must
be provided to allow this.
Do not install the unit above any piping or electrical
raceways. The unit should be able to be removed to
the floor without major rearrangement of other
mechanical or ceiling components.
Consideration needs to be made as to the location of
the units. Avoid installing units directly above occupied spaces (e.g. above office desks or classrooms).
This will minimize possible disruption to the occupants if maintenance or service is required as well as
keeping a potential source of noise out of the area. If
possible, units should be installed above the hallway
drop ceiling in schools, and the supply and return air
is routed directly into classrooms. Local code may
require fire dampers to be used in this application.
Subject to change without prior notice.
Sound is becoming an increasingly important factor in all
HVAC installations. The LM Model has been designed to
minimize sound, but sound acoustical design plays an
important part of the sound level in the space.
Most of the problems associated with HVAC generated
sound can be avoided by paying close attention to
duct design and equipment placement.
A discharge flange is provided on all horizontal unit
models for fastening of ductwork. We recommend
using a flexible collar between the discharge flange
and the duct transformation to reduce vibration
transmission from the cabinet and to simplify
disconnection of the unit from the ceiling ductwork.
Flex
duct
Flex
duct
Return air
filter and grill
Return Air Ducting
Return air to the unit could be either free return or
ducted. The filter rack is provided with a 1" flange
should a ducted return be used. We recommend using
a flexible collar between the return flange and the
duct transformation to reduce vibration transmission
fhp-mfg.com | 16
from the cabinet and to simplify disconnection of the
unit from the ductwork.
Sound is transmitted down the ductwork and it is
important to avoid direct line of sight between the unit
and the space, both on the return or supply side. To
accomplish this, design the duct runs with two 90° turns.
As a general recommendation, duct interiors should
have an acoustic / thermal lining of least 1/2" thick over
the entire duct run or a minimum of the first 5 feet of
the supply trunk.
Line the last five diameters of duct before each outlet
with a one-inch thick sound blanket. Line elbows and
transition pieces, as well as a short distance upstream
and downstream of the fittings.
Elbows, tees and dampers can create turbulence or
distortion in the airflow. Using aerodynamic fittings
will help in reducing this effect. Place a straight length
of duct, 5 to 10 times the duct width, before the next
fitting to smooth out airflow.
Diffusers that are located in the bottom of a trunk
duct can also produce noise.
Piping
The water loop system is typically designed using a
“reverse return” piping system which includes a flow
control device so that flow requirements are met for
each zone.
A high pressure stainless steel flexible hose kit is
recommended to connect the unit to the building’s
hard piping and acts as a sound attenuator for both the
unit operating noise and hydraulic pumping noise. One
end of the hose has a swivel fitting to facilitate removal
of the unit for replacement or service.
Hose kits come in several configurations, but in all cases
should include supply and return shutoff ball valves to
allow removal of a unit without the need to shut down
the entire heat pump system. The hose kit may contain
either a manual or automatic flow control that may be
preset to ensure correct water flow to the unit.
Pressure / Temperature ports should be included in
these fittings to allow the service technician to measure water flow and temperatures when checking unit
operation.
Condensate Drain Piping
Balancing dampers should be located several duct
widths upstream from an air outlet.
Ductwork should be mounted and supported using
isolation devices that absorb vibration.
Applications such as Hotel, Motel, Dormitory or Nursing
Home that use a single duct discharge are susceptible
to noise. These applications typically have low static
pressures and short duct lengths. In these applications
the discharge duct must be fully lined and have a
square elbow without turning vanes. A velocity not
exceeding 500 to 600 fpm is recommended. Return air
for these applications should enter through a sidewall
grille and route up the stud space to a ceiling plenum.
For horizontal heat pumps mounted in the ceiling plenum,
an insulated return plenum is sometimes placed at the
return air opening to further attenuate line-of-sight sound
transmission through return openings.
Condensate piping can be made of steel, copper or PVC
pipe. In most cases, PVC pipe eliminates the need to
wrap insulation around the pipe to prevent sweating.
A 3/4" FPT condensate drain connection is installed in
the unit. The condensate piping must be trapped at the
unit and pitched away from the unit not less than 1/4"
per foot. A vent is required after the trap so that the
condensate will drain away from the unit. The vent can
also act as a cleanout if the trap becomes clogged. The
condensate drain should not be directly piped to a
drain/waste/vent stack. See local codes for the correct
application of condensate piping to drains.
Thermostats
The unit control may be as simple as a single stage
thermostat or the unit may have a DDC controller
integrated into the building management system.
Subject to change without prior notice.
17 | LM Model | Commercial Geothermal Heat Pumps
Multiple Stage Thermostats
All external low voltage control wiring is made to the
thermostat terminal located in the unit electrical box.
Thermostats may be manual change over, auto change
over, programmable or non-programmable depending
on the requirements of the project. A full line of
thermostats are available from FHP as an accessory.
Hose Kits
Hose kits are recommended between the unit and
system loop piping. This will help eliminate the transmission of vibration and noise from the unit to the space.
Hoses are fire rated fiber reinforced EPDM Stainless
Steel braid hoses with swivel connections.
Hose Kit
„Kit 4 – Hose kit with a Y-strainer and blow down
valve on the supply side. The filter screen is 20
mesh, 304 stainless steel to help prevent dirt and
debris from entering the water coil.
„Kit 5 – Hose kit with 24 v 2 position solenoid valve.
This could be used to shut off flow to the unit when
there is not a call for heating or cooling. A typical
application would be with VFD pumping.
„Kit 6 – Hose kit with 23 v 2 position solenoid valve.
Hose kit options are available in the accessories
section of the BST selection software.
Operating Limits
A variety of hose kits are available depending on the
job requirement.
LM Series are capable of operating over a wide range
of conditions. For operation in a geothermal
application or any other installation where the loop
fluid temperature may drop below the ambient dew
point, the extended range option is recommended.
This consists of additional insulation on the piping to
prevent condensation.
„Kit 1 – Hose kit only either 24" or 36" long.
„Maximum and minimum fluid conditions are at unit
rated flow rate.
„Kit 2 – Hose kit with ball valves on the supply and
return hoses. Valves have P/T (pressure/temperature)
ports to facilitate pressure and temperature readings.
„Maximum and minimum operating limits may not
be combined. If one value is at either maximum or
minimum, the other two should be at normal
operating range.
Maximum working pressure 400 PSI for sizes 1/2" – 1"
and 300 PSI for sizes 1 1/4" – 2".
„Kit 3 – Hose kit with automatic flow control valve. The
design flow rate is preset at the factory per the design
conditions and will automatically limit the flow to this
value. This will greatly facilitate balancing of the fluid
loop and ensuring each unit gets the required flow.
Subject to change without prior notice.
„Entering fluid temperatures below 45°F in the
heating mode require antifreeze.
fhp-mfg.com | 18
Unit Selection
To ensure that you get the optimal performance from
your FHP heat pump, it is important that they be
selected accurately to match your design conditions.
Prior to making equipment selections the
zone conditions need to be determined. FHP
Manufacturing recommends using a building load
program to determine the heating and cooling loads.
The catalog provides a wide range of entering air and
water conditions that will meet most applications.
The unit performance can be determined by referring
to the data tables beginning on page 20 to page 35.
Our Bosch Select Tools Selection Software (BST)
is designed to provide you with a fast and accurate
selection based on your specific conditions. This
software is available through the commercial
website. You may click on the BST link and request
an account. www.fhp-mfg.com
Operating Limits­– Cooling & Heating
The following is a typical example for a unit selection.
Design conditions are given as follows:
Total Cooling Load
= 37.8 MBTUH
Sensible Cooling Load
= 29.5 MBTUH
Total Heating Load
= 41.4 MBTUH
Air Flow Required
= 1140 CFM
Entering Air Temp Cooling (db/wb) = 75°F / 63°F
Entering Air Temp Heating
= 60°F
Entering Water Temp Cooling
= 80°F
Entering Water Temp Heating
= 70°F
Fluid Flow Required
= 9 GPM
FHP model LM036 would not be sufficient given these
conditions as it provides a total cooling capacity of
38.0 MBTUH and a sensible capacity of 28.6 MBTUH.
This meets the design conditions as closely as possible.
Please be aware that interpolation between ratings
within a table is allowed, but extrapolation is a
method of estimating new data by expanding outside
a known range of data points and should not be
considered accurate.
Standard Unit
Extended Range Option
Cooling
Minimum ambient air temperature °F
50
50
Maximum ambient air temperature °F
100
100
Minimum evaporator entering air db/wb °F
68/57
68/57
Rated air coil entering air db/wb °F
80/67
80/67
Maximum evaporator entering air db/wb °F
95/85
95/85
Minimum water coil entering fluid temperature °F
70
40
Water loop typical coil entering fluid range temperature °F
70/90
70/90
110
110
Minimum ambient air temperature °F
50
40
Maximum ambient air temperature °F
100
85
Minimum evaporator entering air db °F
50
50
Rated air coil entering air °F
68
68
Maximum evaporator entering air db °F
80
80
50-80
25-80*
50
20*
Maximum water coil entering fluid temperature °F
Heating
Normal water coil entering fluid range °F
Minimum water coil entering Fluid °F
* = antifreeze solution is required at these fluid temperatures.
Subject to change without prior notice.
19 | LM Model | Commercial Geothermal Heat Pumps
Physical Data
Series LM Water Source Heat Pump
LM Series
LM024
LM036
LM048
LM060
LM070
Scroll
Scroll
Scroll
Scroll
Scroll
Refrigeration Charge VT (oz)
58
98
88
110
114
Refrigeration Charge HZ only (oz)
64
85
77
100
114
450/3100
450/3100
450/3100
450/3100
450/3100
ECM Const
Torque /
5 speed
ECM Const
Torque /
5 speed
ECM Const
Torque /
5 speed
ECM Const
Torque /
5 speed
ECM Const
Torque /
5 speed
0.33
0.75
0.75
1.00
1.00
10 X 8
11 X 9
11 X 9
11 X 11
11 X 11
ECM Const
Air Flow
ECM Const
Air Flow
ECM Const
Air Flow
ECM Const
Air Flow
ECM Const
Air Flow
0.33
0.75
0.75
1.00
1.00
10 X 8
11 X 9
11 X 9
11 X 11
11 X 11
FPT
3/4"
1.0"
1.0"
1.0"
1.0"
Coaxial Coil Volume (gal)
0.33
1.18
0.62
1.07
1.12
24 X 20
32 X 26
32 X 26
38 X 26
38 x 26
24 X 24 (1)
16 X 30 (2)
16 X 30 (2)
20 X 30 (2)
20 X 30 (2)
Weight - Operating (lbs)
250
360
340
410
440
Weight - Shipping (lbs)
350
475
450
530
560
18 X 31.5
20 X 42
20 X 42
20 X 49
20 X 49
18 X 18 (2)
20 X 24 (2)
20 X 24 (2)
18 X 20 (3)
18 X 20 (3)
Weight - Operating (lbs)
260
375
355
430
460
Weight - Shipping (lbs)
360
495
470
550
580
Compressor Type (Qty 1)
Max Water Working Pressure (PSIG/kPa)
ECM Constant Torque
Fan Motor Type/Speeds
Fan Motor (HP)
Blower Wheel Size (Dia. x W)
ECM Constant CFM
Fan Motor Type/Speeds
Fan Motor (HP)
Blower Wheel Size (Dia. x W)
Water Connection Size
Vertical Cabinet
Air Coil Dimensions (H x W)
Nominal size of Standard Filter - 1" MERV 5 (L x H)
Horizontal Cabinet
Air Coil Dimensions (H x W)
Nominal size of Standard Filter - 1" MERV 5 (L x H)
Subject to change without prior notice.
fhp-mfg.com | 20
Horizontal Cabinet Corner Weights
Configuration
LM036
LM048
LM060
LM070
Right Hand Evaporator
Total
Left
Front*
Right
Front*
Left Back
Right
Back
Left
Front*
Right
Front*
Left Back
Right
Back
Lbs
283
60
74
68
61
60
74
61
68
kg
128
27
34
31
28
27
33
28
31
Lbs
385
94
104
95
92
94
104
92
95
kg
174
43
47
43
42
42
47
42
43
Lbs
361
84
109
88
81
84
109
81
88
kg
164
38
49
40
37
38
49
37
40
Lbs
440
107
124
104
105
107
124
105
104
kg
199
48
56
47
48
48
56
47
47
Lbs
469
117
136
105
111
117
136
111
105
kg
212
53
62
48
50
53
62
50
48
Model
LM024
Left Hand Evaporator
NOTE: * Front is control box end.
Certified Performance Data
ASHRAE / AHRI / ISO 13256-1. English (I-P) Units
Water Loop Heat Pump
Cooling 86˚F
Ground Water Heat Pump
Heating 68˚F
Coolng 59˚F
Ground Loop Heat Pump
Heating 50˚F
Cooling 77˚F
Heating 32˚F
Model
Capacity EER
Capacity
Btuh Btuh/W
Btuh
Full
Load
Capacity
EER
Capacity
Btuh
Btuh/W
Btuh
COP
Capacity
Btuh
EER
Capacity
COP
Btuh/W
Btuh
LM024
25500
17.4
29200
5.6
29000
26.5
23500
4.9
26600
19.9
18000
4.1
LM036
39000
19.0
42800
5.6
43300
28.0
35900
5.1
40800
22.0
28400
4.3
LM048
49200
16.6
56100
5.3
55300
25.3
46300
4.7
51300
19.3
36900
4.0
LM060
63800
17.0
73300
5.2
70200
24.4
60300
4.6
65100
18.9
48000
3.9
LM070
71600
16.3
84000
5.1
78700
23.1
70000
4.5
73700
18.5
55300
3.8
Model
Part
Load
COP
Cooling 86˚F
Heating 68˚F
Coolng 59˚F
Heating 50˚F
Cooling 68˚F
Heating 41˚F
LM024
18500
18.9
21200
6.5
21700
33.6
16700
5.1
21000
28.1
14400
4.4
LM036
29000
22.2
31000
6.5
32600
37.0
25200
5.2
31900
32.0
22400
4.7
LM048
36700
18.9
40900
6.2
42000
33.8
33700
5.2
39900
27.8
29800
4.5
LM060
47500
18.7
53600
5.8
53300
31.2
44300
4.8
51600
26.5
39800
4.4
LM070
55200
17.8
64900
5.7
60800
28.5
52900
4.8
60300
25.4
46900
4.3
Subject to change without prior notice.
21 | LM Model | Commercial Geothermal Heat Pumps
Capacity Data
LM024 – Part Load (650 CFM @ 0.34" ESP)
COOLING
Entering
Fluid Temp
(°F)
50
60
70
80
85
90
100
110
Water
Flow
(GPM)
Pressure
Drop PSI
(FOH)
3
0.7
(1.7)
4
1.3
(2.9)
6
2.6
(5.9)
3
0.7
(1.6)
4
1.2
(2.8)
6
2.5
(5.7)
3
0.7
(1.6)
4
1.2
(2.7)
6
2.4
(5.5)
3
0.6
(1.5)
4
1.1
(2.6)
6
2.3
(5.4)
3
0.6
(1.5)
4
1.1
(2.5)
6
2.3
(5.3)
3
0.6
(1.5)
4
1.1
(2.5)
6
2.3
(5.2)
3
0.6
(1.4)
4
1.0
(2.4)
6
2.2
(5)
3
0.6
(1.4)
4
1.0
(2.4)
6
2.1
(4.9)
Entering Air Temp Total Capacity
(db/wb) °F
(MBTUH)
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
Subject to change without prior notice.
20.0
21.3
22.7
20.4
21.8
23.1
20.8
22.2
23.7
19.0
20.3
21.5
19.4
20.7
22.0
19.8
21.1
22.5
18.0
19.2
20.4
18.3
19.6
20.8
18.7
20.0
21.3
17.0
18.1
19.2
17.3
18.4
19.6
17.6
18.9
20.1
16.4
17.5
18.7
16.7
17.9
19.1
17.1
18.2
19.5
15.9
17.0
18.0
16.2
17.3
18.5
16.5
17.7
18.9
14.8
15.8
16.8
15.1
16.1
17.2
15.3
16.5
17.6
13.7
14.6
15.6
13.9
14.9
15.9
14.2
15.2
16.3
HEATING
Sensible
Capacity
(MBTUH)
Heat of
Rejection
(MBTUH)
Power Input
(kW)
EER
15.8
16.3
16.7
16.0
16.5
16.9
16.1
16.7
17.1
15.4
15.9
16.3
15.6
16.1
16.5
15.7
16.2
16.7
15.0
15.5
16.0
15.1
15.6
16.1
15.3
15.8
16.3
14.5
15.1
15.6
14.7
15.2
15.7
14.8
15.3
15.9
14.3
14.8
15.3
14.4
15.0
15.5
14.6
15.1
15.7
14.1
14.6
15.2
14.2
14.7
15.2
14.3
14.9
15.4
13.6
14.2
14.8
13.7
14.3
14.9
13.9
14.4
15.0
13.2
13.8
14.3
13.3
13.9
14.5
13.4
14.0
14.5
22.5
23.8
25.1
22.8
24.1
25.5
23.1
24.5
26.0
21.7
22.9
24.2
22.0
23.3
24.6
22.3
23.6
25.0
21.0
22.2
23.4
21.2
22.4
23.7
21.5
22.8
24.0
20.2
21.4
22.5
20.5
21.6
22.8
20.7
21.9
23.1
19.9
21.0
22.2
20.1
21.2
22.4
20.3
21.5
22.7
19.5
20.6
21.7
19.7
20.9
22.0
19.9
21.1
22.3
18.9
19.9
21.0
19.0
20.1
21.2
19.2
20.3
21.5
18.3
19.2
20.3
18.4
19.4
20.4
18.5
19.6
20.7
0.77
0.76
0.76
0.74
0.73
0.72
0.71
0.70
0.69
0.86
0.85
0.84
0.82
0.81
0.80
0.79
0.78
0.77
0.96
0.95
0.94
0.92
0.91
0.90
0.89
0.87
0.86
1.08
1.07
1.06
1.04
1.03
1.02
1.00
0.99
0.97
1.14
1.14
1.13
1.10
1.09
1.08
1.06
1.05
1.04
1.21
1.21
1.20
1.17
1.16
1.15
1.13
1.12
1.11
1.36
1.36
1.35
1.32
1.31
1.31
1.28
1.27
1.26
1.53
1.53
1.53
1.49
1.48
1.48
1.45
1.44
1.43
25.8
27.8
30.0
27.4
29.7
31.9
29.1
31.5
34.2
22.1
23.9
25.5
23.5
25.4
27.3
24.9
27.0
29.3
18.7
20.1
21.6
19.8
21.4
23.0
21.0
22.8
24.7
15.8
16.9
18.1
16.6
17.9
19.2
17.6
19.1
20.6
14.3
15.4
16.5
15.1
16.3
17.6
16.1
17.3
18.8
13.1
14.1
15.0
13.8
14.9
16.0
14.6
15.8
17.1
10.8
11.6
12.4
11.4
12.2
13.1
11.9
13.0
14.0
8.9
9.5
10.2
9.3
10.0
10.7
9.8
10.5
11.4
Entering
Fluid Temp
(°F)
Pressure Drop Entering Air
PSI (FOH)
Temp (°F)
0.8
(1.8)
30
1.3
(3.1)
2.8
(6.4)
0.8
(1.8)
40
1.3
(3.0)
2.7
(6.1)
0.7
(1.7)
50
1.2
(2.9)
2.6
(5.9)
0.7
(1.6)
60
1.2
(2.8)
2.5
(5.7)
0.7
(1.6)
70
1.2
(2.7)
2.4
(5.5)
0.7
(1.5)
80
1.1
(2.6)
2.3
(5.4)
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
Total
Capacity
(MBTUH)
Heat of
Absorption
(MBTUH)
Power
Input
(kW)
COP
12.8
12.4
12.1
13.2
12.7
12.3
13.6
13.1
12.7
14.8
14.4
14.0
15.3
14.9
14.3
15.7
15.3
14.7
16.9
16.4
16.0
17.5
16.9
16.5
18.0
17.4
17.0
19.1
18.5
18.1
19.7
19.1
18.6
20.4
19.7
19.1
21.3
20.7
20.1
22.0
21.3
20.7
22.8
22.0
21.4
23.5
22.9
22.3
24.4
23.6
22.9
25.2
24.4
23.7
9.7
8.9
8.1
10.0
9.2
8.4
10.4
9.5
8.7
11.6
10.8
9.9
12.0
11.1
10.3
12.5
11.5
10.7
13.7
12.7
11.9
14.2
13.2
12.3
14.7
13.7
12.8
15.8
14.8
13.9
16.4
15.4
14.4
17.1
16.0
14.9
18.0
17.0
15.9
18.7
17.6
16.5
19.5
18.3
17.1
20.3
19.2
18.0
21.1
19.9
18.7
22.1
20.8
19.5
1.01
1.13
1.26
1.01
1.13
1.26
1.02
1.14
1.27
1.03
1.15
1.28
1.03
1.15
1.28
1.03
1.15
1.29
1.04
1.16
1.29
1.04
1.16
1.30
1.04
1.16
1.30
1.04
1.17
1.31
1.04
1.17
1.31
1.04
1.17
1.31
1.04
1.17
1.32
1.04
1.17
1.32
1.04
1.17
1.32
1.04
1.17
1.32
1.03
1.17
1.32
1.03
1.16
1.32
3.7
3.2
2.8
3.8
3.3
2.9
3.9
3.4
2.9
4.2
3.7
3.2
4.4
3.8
3.3
4.5
3.9
3.4
4.8
4.2
3.6
5.0
4.3
3.7
5.1
4.4
3.8
5.4
4.7
4.1
5.6
4.8
4.2
5.8
5.0
4.3
6.0
5.2
4.5
6.2
5.3
4.6
6.4
5.5
4.7
6.7
5.8
4.9
6.9
5.9
5.1
7.2
6.2
5.3
Extended Range - Anti-freeze required
AHRI/ISO13256-1 certified performance is rated at entering air conditions of 80.6°F DB and 66.2°F
WB in cooling and 68°F DB in heating.
Tabulated unit performance does not include fan or pump power corrections required for AHRI/ISO
standard performance ratings.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection software.
Ratings below 40°F are with a methanol solution.
Due to variations in installation, actual performance may vary from the tabulated data. Performance
contained herein are as a result of extensive testing by FHP and are not express warranties between
the parties and may be changed at any time.
Continuous research and development to improve our products may result in a change to the current
design and specifications without notice.
fhp-mfg.com | 22
Capacity Data
LM024 – Full Load (825 CFM @ 0.23" ESP)
COOLING
Entering
Fluid Temp
(°F)
50
60
70
80
85
90
100
110
Water
Flow
(GPM)
Pressure
Drop PSI
(FOH)
3
0.7
(1.7)
4
1.3
(2.9)
6
2.6
(5.9)
3
0.7
(1.6)
4
1.2
(2.8)
6
2.5
(5.7)
3
0.7
(1.6)
4
1.2
(2.7)
6
2.4
(5.5)
3
0.6
(1.5)
4
1.1
(2.6)
6
2.3
(5.4)
3
0.6
(1.5)
4
1.1
(2.5)
6
2.3
(5.3)
3
0.6
(1.5)
4
1.1
(2.5)
6
2.3
(5.2)
3
0.6
(1.4)
4
1.0
(2.4)
6
2.2
(5)
3
0.6
(1.4)
4
1.0
(2.4)
6
2.1
(4.9)
Entering Air Temp Total Capacity
(db/wb) °F
(MBTUH)
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
27.1
28.8
30.5
27.8
29.5
31.4
28.5
30.3
32.3
25.9
27.5
29.2
26.5
28.2
30.0
27.2
29.0
30.9
24.6
26.2
27.8
25.2
26.8
28.6
25.9
27.5
29.3
23.3
24.8
26.3
23.9
25.4
27.1
24.5
26.1
27.8
22.7
24.1
25.6
23.2
24.7
26.3
23.8
25.4
27.1
22.0
23.4
24.9
22.6
24.0
25.5
23.1
24.6
26.3
20.6
22.0
23.4
21.1
22.5
24.0
21.7
23.2
24.6
19.3
20.6
22.0
19.8
21.1
22.5
20.2
21.7
23.2
HEATING
Sensible
Capacity
(MBTUH)
Heat of
Rejection
(MBTUH)
Power
Input (kW)
EER
20.7
21.2
21.8
21.0
21.6
22.1
21.3
21.9
22.4
20.1
20.8
21.3
20.4
21.0
21.6
20.7
21.3
21.9
19.6
20.2
20.8
19.9
20.5
21.0
20.1
20.8
21.4
19.1
19.7
20.2
19.3
19.9
20.5
19.5
20.2
20.8
18.8
19.4
20.1
19.1
19.6
20.2
19.3
19.9
20.5
18.6
19.1
19.7
18.7
19.4
20.0
19.0
19.6
20.2
18.0
18.7
19.3
18.2
18.9
19.5
18.4
19.0
19.7
17.5
18.2
18.7
17.7
18.3
19.0
17.9
18.5
19.1
31.3
33.1
34.9
31.8
33.6
35.6
32.3
34.2
36.2
30.4
32.0
33.9
30.9
32.6
34.5
31.3
33.2
35.1
29.4
31.1
32.7
29.9
31.6
33.4
30.4
32.1
33.9
28.5
30.1
31.7
28.9
30.5
32.3
29.4
31.0
32.8
28.1
29.6
31.1
28.4
30.0
31.7
28.9
30.5
32.3
27.6
29.1
30.7
28.0
29.5
31.1
28.3
30.0
31.7
26.8
28.2
29.7
27.1
28.6
30.1
27.4
29.0
30.5
26.0
27.4
28.9
26.3
27.7
29.2
26.5
28.1
29.6
1.27
1.29
1.30
1.21
1.22
1.24
1.14
1.15
1.16
1.38
1.40
1.42
1.32
1.34
1.35
1.26
1.27
1.28
1.50
1.52
1.53
1.44
1.46
1.47
1.38
1.39
1.40
1.63
1.65
1.66
1.57
1.58
1.60
1.51
1.52
1.53
1.70
1.72
1.73
1.64
1.65
1.67
1.57
1.59
1.60
1.77
1.79
1.81
1.71
1.73
1.74
1.65
1.66
1.67
1.94
1.96
1.97
1.88
1.89
1.90
1.81
1.82
1.83
2.14
2.15
2.17
2.07
2.08
2.09
2.00
2.00
2.01
21.4
22.4
23.4
23.1
24.2
25.4
25.1
26.3
27.8
18.8
19.7
20.7
20.1
21.1
22.2
21.6
22.8
24.1
16.5
17.3
18.2
17.6
18.4
19.5
18.8
19.8
20.9
14.4
15.1
15.9
15.3
16.1
17.0
16.3
17.2
18.2
13.4
14.1
14.8
14.2
15.0
15.8
15.2
16.0
17.0
12.4
13.1
13.8
13.2
13.9
14.7
14.1
14.8
15.8
10.6
11.3
11.9
11.3
11.9
12.7
12.0
12.8
13.5
9.1
9.6
10.2
9.6
10.2
10.8
10.1
10.9
11.6
Entering Fluid Pressure Drop
Temp (°F)
PSI (FOH)
0.8
(1.8)
30
1.3
(3.1)
2.8
(6.4)
0.8
(1.8)
40
1.3
(3.0)
2.7
(6.1)
0.7
(1.7)
50
1.2
(2.9)
2.6
(5.9)
0.7
(1.6)
60
1.2
(2.8)
2.5
(5.7)
0.7
(1.6)
70
1.2
(2.7)
2.4
(5.5)
0.7
(1.5)
80
1.1
(2.6)
2.3
(5.4)
Entering
Air Temp
(°F)
Total
Capacity
(MBTUH)
Heat of
Absorption
(MBTUH)
Power
Input
(kW)
COP
18.1
17.7
17.4
18.7
18.2
17.9
19.4
18.8
18.4
20.5
20.0
19.6
21.2
20.7
20.2
22.1
21.5
20.9
23.1
22.6
22.2
24.0
23.4
23.0
25.1
24.4
23.8
25.9
25.3
24.9
27.0
26.3
25.8
28.2
27.5
26.8
28.9
28.2
27.6
30.1
29.4
28.7
31.6
30.7
29.9
31.9
31.1
30.5
33.4
32.5
31.7
35.0
34.0
33.1
13.6
12.7
11.8
14.1
13.2
12.2
14.7
13.8
12.7
15.8
14.8
13.9
16.5
15.5
14.5
17.3
16.2
15.2
18.2
17.2
16.2
19.1
18.0
16.8
20.0
18.9
17.7
20.8
19.8
18.6
21.9
20.8
19.5
23.1
21.8
20.5
23.6
22.5
21.3
24.8
23.7
22.3
26.2
24.9
23.4
26.5
25.3
24.0
27.9
26.6
25.1
29.5
28.0
26.4
1.38
1.52
1.67
1.39
1.53
1.68
1.41
1.54
1.69
1.43
1.57
1.72
1.44
1.58
1.74
1.46
1.60
1.75
1.48
1.62
1.78
1.50
1.64
1.80
1.52
1.66
1.82
1.54
1.68
1.84
1.56
1.70
1.85
1.58
1.72
1.87
1.59
1.73
1.89
1.61
1.75
1.91
1.63
1.78
1.93
1.64
1.78
1.94
1.66
1.81
1.97
1.69
1.83
2.00
3.8
3.4
3.0
3.9
3.5
3.1
4.0
3.6
3.2
4.2
3.7
3.3
4.3
3.8
3.4
4.4
3.9
3.5
4.6
4.1
3.6
4.7
4.2
3.7
4.8
4.3
3.8
4.9
4.4
4.0
5.1
4.5
4.1
5.2
4.7
4.2
5.3
4.8
4.3
5.5
4.9
4.4
5.7
5.1
4.5
5.7
5.1
4.6
5.9
5.3
4.7
6.1
5.4
4.9
3.8
3.4
3.0
3.9
3.5
3.1
4.0
3.6
3.2
4.2
3.7
3.3
4.3
3.8
3.4
4.4
3.9
3.5
4.6
4.1
3.6
4.7
4.2
3.7
4.8
4.3
3.8
4.9
4.4
4.0
5.1
4.5
4.1
5.2
4.7
4.2
5.3
4.8
4.3
5.5
4.9
4.4
5.7
5.1
4.6
5.8
5.1
4.6
5.9
5.3
4.7
6.1
5.4
4.9
Extended Range - Anti-freeze required
AHRI/ISO13256-1 certified performance is rated at entering air conditions of 80.6°F DB and 66.2°F
WB in cooling and 68°F DB in heating.
Tabulated unit performance does not include fan or pump power corrections required for AHRI/ISO
standard performance ratings.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection software.
Ratings below 40°F are with a methanol solution.
Due to variations in installation, actual performance may vary from the tabulated data. Performance
contained herein are as a result of extensive testing by FHP and are not express warranties between
the parties and may be changed at any time.
Continuous research and development to improve our products may result in a change to the current
design and specifications without notice.
Subject to change without prior notice.
23 | LM Model | Commercial Geothermal Heat Pumps
Capacity Data
LM036 – Part Load (800 CFM @ 0.58" ESP)
COOLING
Entering
Fluid Temp
(°F)
50
60
70
80
85
90
100
110
Water
Flow
(GPM)
Pressure
Drop PSI
(FOH)
4.5
1.4
(3.2)
6
2.3
(5.4)
9
4.8
(11.1)
4.5
1.3
(3.1)
6
2.3
(5.2)
9
4.6
(10.7)
4.5
1.3
(3)
6
2.2
(5)
9
4.5
(10.4)
4.5
1.3
(2.9)
6
2.1
(4.8)
9
4.4
(10.1)
4.5
1.2
(2.8)
6
2.1
(4.8)
9
4.3
(9.9)
4.5
1.2
(2.8)
6
2.0
(4.7)
9
4.2
(9.7)
4.5
1.2
(2.7)
6
2.0
(4.6)
9
4.1
(9.5)
4.5
1.1
(2.6)
6
1.9
(4.4)
9
4.0
(9.2)
Entering Air Temp Total Capacity
(db/wb) °F
(MBTUH)
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
Subject to change without prior notice.
29.9
32.0
34.2
30.4
32.5
34.8
30.8
33.1
35.4
28.5
30.5
32.7
29.0
31.0
33.3
29.4
31.6
33.8
27.1
29.1
31.1
27.5
29.6
31.6
27.9
30.0
32.2
25.7
27.5
29.5
26.1
28.0
30.0
26.4
28.5
30.5
24.9
26.8
28.7
25.3
27.2
29.1
25.7
27.6
29.7
24.2
25.9
27.8
24.5
26.4
28.3
24.9
26.8
28.8
22.7
24.4
26.1
23.0
24.8
26.6
23.3
25.1
27.1
21.1
22.8
24.5
21.4
23.1
24.9
21.7
23.4
25.2
HEATING
Sensible
Capacity
(MBTUH)
Heat of
Rejection
(MBTUH)
Power Input
(kW)
EER
21.8
22.5
23.0
22.0
22.7
23.2
22.2
22.9
23.5
21.2
21.9
22.4
21.4
22.1
22.6
21.6
22.3
22.9
20.6
21.2
21.9
20.8
21.4
22.1
21.0
21.6
22.2
19.9
20.6
21.3
20.1
20.8
21.4
20.3
20.9
21.6
19.6
20.3
20.9
19.8
20.5
21.2
19.9
20.7
21.3
19.3
20.0
20.7
19.5
20.1
20.8
19.5
20.3
21.0
18.7
19.4
20.1
18.9
19.6
20.2
18.9
19.7
20.3
18.1
18.8
19.5
18.2
18.9
19.6
18.3
19.0
19.8
33.2
35.3
37.4
33.6
35.7
37.9
34.0
36.2
38.5
32.1
34.1
36.2
32.5
34.5
36.7
32.8
34.9
37.2
31.0
33.0
35.0
31.3
33.4
35.4
31.6
33.7
35.9
30.1
31.9
33.9
30.3
32.2
34.3
30.6
32.6
34.6
29.6
31.5
33.4
29.8
31.7
33.7
30.1
32.0
34.0
29.1
30.9
32.8
29.3
31.2
33.2
29.6
31.5
33.4
28.3
30.0
31.8
28.5
30.2
32.1
28.6
30.4
32.4
27.5
29.2
30.9
27.7
29.4
31.1
27.8
29.5
31.2
1.01
1.00
0.98
0.99
0.97
0.95
0.96
0.94
0.92
1.11
1.10
1.08
1.07
1.06
1.04
1.04
1.02
1.00
1.24
1.23
1.21
1.19
1.18
1.16
1.16
1.14
1.12
1.39
1.38
1.38
1.35
1.33
1.32
1.30
1.29
1.27
1.48
1.48
1.47
1.43
1.42
1.41
1.39
1.37
1.36
1.58
1.57
1.57
1.53
1.52
1.51
1.49
1.47
1.45
1.80
1.79
1.79
1.75
1.74
1.73
1.71
1.68
1.67
2.05
2.04
2.04
1.99
1.98
1.97
1.95
1.94
1.92
29.6
32.1
34.9
30.9
33.6
36.7
32.0
35.1
38.5
25.7
27.9
30.3
27.0
29.3
32.0
28.2
30.9
33.7
22.0
23.8
25.7
23.0
25.1
27.2
24.2
26.4
28.8
18.5
19.9
21.5
19.4
21.0
22.7
20.3
22.2
24.1
16.8
18.2
19.6
17.7
19.1
20.7
18.5
20.1
21.9
15.3
16.5
17.8
16.0
17.4
18.8
16.7
18.3
19.9
12.6
13.6
14.6
13.2
14.3
15.4
13.6
14.9
16.3
10.3
11.2
12.0
10.7
11.7
12.6
11.1
12.1
13.2
Entering Fluid Pressure Drop
Temp (°F)
PSI (FOH)
1.5
(3.4)
30
2.5
(5.7)
5.2
(11.9)
1.4
(3.3)
40
2.4
(5.5)
5.0
(11.5)
1.4
(3.2)
50
2.3
(5.4)
4.8
(11.1)
1.3
(3.1)
60
2.2
(5.2)
4.6
(10.7)
1.3
(3.0)
70
2.2
(5.0)
4.5
(10.4)
1.2
(2.9)
80
2.1
(4.8)
4.4
(10.1)
Entering
Air Temp
(°F)
Total
Capacity
(MBTUH)
Heat of
Absorption
(MBTUH)
Power
Input
(kW)
COP
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
18.4
18.0
17.7
18.9
18.4
18.0
19.3
18.9
18.3
21.3
20.8
20.4
21.9
21.3
20.8
22.5
21.9
21.4
24.4
23.8
23.4
25.1
24.4
23.9
25.9
25.1
24.6
27.6
26.9
26.4
28.5
27.7
27.0
29.4
28.5
27.8
30.9
30.0
29.6
31.9
31.0
30.3
33.0
32.0
31.2
34.2
33.2
32.8
35.4
34.4
33.8
36.7
35.6
34.7
13.6
12.6
11.5
14.0
12.9
11.7
14.5
13.4
12.4
16.4
15.3
14.1
17.0
15.8
14.6
17.6
16.3
15.1
19.5
18.2
17.0
20.2
18.8
17.5
20.9
19.5
18.1
22.6
21.2
19.8
23.5
22.0
20.5
24.4
22.8
21.3
25.9
24.3
22.6
26.9
25.3
23.6
28.0
26.3
24.4
29.0
27.6
25.8
30.5
28.6
27.1
31.8
29.9
27.7
1.46
1.65
1.86
1.47
1.65
1.87
1.47
1.65
1.87
1.48
1.67
1.88
1.49
1.67
1.89
1.49
1.68
1.89
1.50
1.69
1.91
1.51
1.70
1.92
1.51
1.70
1.92
1.52
1.72
1.94
1.52
1.72
1.95
1.53
1.73
1.96
1.54
1.74
1.98
1.54
1.75
1.99
1.55
1.76
2.00
1.55
1.77
2.02
1.56
1.78
2.03
1.56
1.79
2.04
3.7
3.2
2.8
3.8
3.3
2.8
3.8
3.3
2.9
4.2
3.7
3.2
4.3
3.7
3.2
4.4
3.8
3.3
4.8
4.1
3.6
4.9
4.2
3.6
5.0
4.3
3.7
5.3
4.6
4.0
5.5
4.7
4.0
5.6
4.8
4.2
5.9
5.0
4.4
6.1
5.2
4.5
6.3
5.3
4.6
6.5
5.5
4.8
6.7
5.7
4.9
6.9
5.8
5.0
Extended Range - Anti-freeze required
AHRI/ISO13256-1 certified performance is rated at entering air conditions of 80.6°F DB and 66.2°F
WB in cooling and 68°F DB in heating.
Tabulated unit performance does not include fan or pump power corrections required for AHRI/ISO
standard performance ratings.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection software.
Ratings below 40°F are with a methanol solution.
Due to variations in installation, actual performance may vary from the tabulated data. Performance
contained herein are as a result of extensive testing by FHP and are not express warranties between
the parties and may be changed at any time.
Continuous research and development to improve our products may result in a change to the current
design and specifications without notice.
fhp-mfg.com | 24
Capacity Data
LM036 – Full Load (1100 CFM @ 0.25" ESP)
COOLING
Entering
Fluid Temp
(°F)
50
60
70
80
85
90
100
110
Water
Flow
(GPM)
Pressure
Drop PSI
(FOH)
4.5
1.4
(3.2)
6
2.3
(5.4)
9
4.8
(11.1)
4.5
1.3
(3.1)
6
2.3
(5.2)
9
4.6
(10.7)
4.5
1.3
(3)
6
2.2
(5)
9
4.5
(10.4)
4.5
1.3
(2.9)
6
2.1
(4.8)
9
4.4
(10.1)
4.5
1.2
(2.8)
6
2.1
(4.8)
9
4.3
(9.9)
4.5
1.2
(2.8)
6
2.0
(4.7)
9
4.2
(9.7)
4.5
1.2
(2.7)
6
2.0
(4.6)
9
4.1
(9.5)
4.5
1.1
(2.6)
6
1.9
(4.4)
9
4.0
(9.2)
Entering Air Temp Total Capacity
(db/wb) °F
(MBTUH)
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
40.8
43.5
46.3
41.6
44.4
47.3
42.3
45.2
48.3
39.2
41.7
44.5
39.9
42.6
45.4
40.7
43.4
46.3
37.5
39.9
42.6
38.1
40.8
43.4
38.8
41.5
44.3
35.7
38.1
40.6
36.4
38.9
41.4
37.0
39.5
42.3
34.8
37.1
39.6
35.4
37.9
40.5
36.0
38.6
41.3
33.9
36.2
38.6
34.6
36.9
39.5
35.1
37.6
40.2
32.0
34.3
36.5
32.7
35.0
37.4
33.2
35.5
38.0
30.2
32.4
34.6
30.7
32.9
35.2
31.3
33.5
35.9
HEATING
Sensible
Capacity
(MBTUH)
Heat of
Rejection
(MBTUH)
Power Input
(kW)
EER
29.9
30.6
31.4
30.2
31.0
31.7
30.5
31.4
32.1
29.1
30.0
30.6
29.4
30.3
31.0
29.8
30.5
31.4
28.4
29.2
29.9
28.7
29.5
30.3
29.0
29.8
30.7
27.6
28.4
29.2
27.8
28.7
29.6
28.1
29.0
29.9
27.2
28.1
28.8
27.5
28.3
29.1
27.5
28.6
29.5
26.8
27.6
28.6
27.1
27.9
28.8
27.4
28.2
29.1
26.1
26.9
27.8
26.3
27.1
28.0
26.5
27.3
28.3
25.3
26.2
27.1
25.5
26.5
27.4
25.7
26.7
27.5
46.4
49.2
52.2
47.0
49.9
53.0
47.6
50.7
53.9
45.1
47.8
50.7
45.7
48.5
51.4
46.2
49.2
52.2
43.9
46.5
49.3
44.3
47.1
49.9
44.8
47.7
50.6
42.6
45.2
47.9
43.2
45.7
48.4
43.6
46.2
49.0
42.1
44.5
47.2
42.5
45.1
47.8
42.9
45.6
48.3
41.6
44.0
46.4
42.0
44.5
47.1
42.2
44.9
47.5
40.5
42.9
45.2
40.9
43.2
45.7
41.1
43.6
46.0
39.6
41.8
44.1
39.8
42.1
44.5
40.1
42.4
44.9
1.69
1.74
1.78
1.64
1.69
1.73
1.60
1.64
1.69
1.82
1.86
1.89
1.76
1.80
1.83
1.71
1.74
1.78
1.98
2.01
2.04
1.91
1.94
1.97
1.85
1.87
1.90
2.16
2.19
2.22
2.09
2.11
2.14
2.02
2.04
2.06
2.27
2.30
2.32
2.19
2.22
2.24
2.13
2.14
2.16
2.39
2.41
2.43
2.30
2.33
2.34
2.23
2.25
2.26
2.64
2.67
2.69
2.56
2.58
2.59
2.49
2.51
2.50
2.93
2.95
2.97
2.85
2.86
2.87
2.77
2.78
2.79
24.1
25.1
26.1
25.4
26.4
27.4
26.5
27.6
28.7
21.6
22.5
23.5
22.7
23.7
24.8
23.9
24.9
26.1
19.0
19.9
20.9
20.0
21.1
22.1
21.0
22.2
23.3
16.5
17.4
18.3
17.4
18.4
19.4
18.3
19.4
20.6
15.3
16.2
17.1
16.2
17.1
18.1
16.9
18.0
19.2
14.2
15.0
15.9
15.0
15.9
16.9
15.8
16.7
17.8
12.1
12.9
13.6
12.8
13.6
14.5
13.4
14.2
15.2
10.3
11.0
11.6
10.8
11.5
12.3
11.3
12.1
12.9
Entering Fluid Pressure Drop
Temp (°F)
PSI (FOH)
1.5
(3.4)
30
2.5
(5.7)
5.2
(11.9)
1.4
(3.3)
40
2.4
(5.5)
5.0
(11.5)
1.4
(3.2)
50
2.3
(5.4)
4.8
(11.1)
1.3
(3.1)
60
2.2
(5.2)
4.6
(10.7)
1.3
(3.0)
70
2.2
(5.0)
4.5
(10.4)
1.2
(2.9)
80
2.1
(4.8)
4.4
(10.1)
Entering
Air Temp
(°F)
Total
Capacity
(MBTUH)
Heat of
Absorption
(MBTUH)
Power
Input
(kW)
COP
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
26.0
25.6
25.4
26.8
26.4
26.1
27.8
27.2
26.8
29.7
29.2
28.7
30.7
30.1
29.6
31.9
31.2
30.5
33.6
33.0
32.5
34.9
34.2
33.6
36.3
35.5
34.8
37.8
37.0
36.4
39.4
38.4
37.7
41.1
40.0
39.1
42.2
41.3
40.5
44.0
42.9
41.9
46.0
44.7
43.6
46.7
45.7
44.7
48.8
47.5
46.4
51.1
49.6
48.3
19.5
18.4
17.2
20.3
19.1
17.9
21.2
19.9
18.6
22.9
21.7
20.4
23.9
22.5
21.2
25.0
23.5
22.0
26.6
25.2
23.7
27.8
26.3
24.7
29.1
27.5
25.9
30.5
28.9
27.4
31.9
30.2
28.5
33.5
31.7
29.8
34.6
32.9
31.1
36.3
34.4
32.5
38.1
36.1
34.0
38.8
36.9
35.0
40.7
38.7
36.6
42.8
40.6
38.4
1.93
2.15
2.40
1.95
2.17
2.42
1.97
2.19
2.43
2.01
2.23
2.48
2.03
2.25
2.50
2.05
2.28
2.52
2.09
2.32
2.57
2.12
2.34
2.59
2.15
2.37
2.62
2.18
2.40
2.65
2.21
2.43
2.68
2.25
2.47
2.71
2.27
2.49
2.75
2.31
2.53
2.78
2.36
2.57
2.82
2.37
2.59
2.85
2.42
2.64
2.89
2.48
2.69
2.94
3.9
3.5
3.1
4.0
3.6
3.2
4.1
3.6
3.2
4.3
3.8
3.4
4.4
3.9
3.5
4.6
4.0
3.5
4.7
4.2
3.7
4.8
4.3
3.8
4.9
4.4
3.9
5.1
4.5
4.0
5.2
4.6
4.1
5.4
4.8
4.2
5.4
4.9
4.3
5.6
5.0
4.4
5.7
5.1
4.5
5.8
5.2
4.6
5.9
5.3
4.7
6.0
5.4
4.8
Extended Range - Anti-freeze required
AHRI/ISO13256-1 certified performance is rated at entering air conditions of 80.6°F DB and 66.2°F
WB in cooling and 68°F DB in heating.
Tabulated unit performance does not include fan or pump power corrections required for AHRI/ISO
standard performance ratings.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection software.
Ratings below 40°F are with a methanol solution.
Due to variations in installation, actual performance may vary from the tabulated data. Performance
contained herein are as a result of extensive testing by FHP and are not express warranties between
the parties and may be changed at any time.
Continuous research and development to improve our products may result in a change to the current
design and specifications without notice.
Subject to change without prior notice.
25 | LM Model | Commercial Geothermal Heat Pumps
Capacity Data
LM048 – Part Load (1300 CFM @ 0.27" ESP)
COOLING
Entering
Fluid Temp
(°F)
50
60
70
80
85
90
100
110
Water
Flow
(GPM)
Pressure
Drop PSI
(FOH)
6
1,1
(2.6)
8
1.9
(4.4)
12
3.9
(9.1)
6
1.1
(2.5)
8
1.9
(4.3)
12
3.8
(8.8)
6
1.1
(2.5)
8
1.8
(4.1)
12
3.7
(8.6)
6
1.0
(2.4)
8
1.7
(4)
12
3.6
(8.3)
6
1.0
(2.3)
8
1.7
(3.9)
12
3.5
(8.1)
6
1.0
(2.3)
8
1.7
(3.9)
12
3.5
(8)
6
1.0
(2.2)
8
1.6
(3.8)
12
3.4
(7.8)
6
1.0
(2.2)
8
1.6
(3.6)
12
3.3
(7.6)
Entering Air Temp Total Capacity
(db/wb) °F
(MBTUH)
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
Subject to change without prior notice.
39.7
42.4
45.2
40.6
43.4
46.2
41.6
44.5
47.4
37.6
40.1
42.8
38.4
41.0
43.8
39.3
42.0
45.0
35.4
37.8
40.4
36.1
38.7
41.4
37.0
39.7
42.4
33.2
35.5
38.0
33.9
36.3
38.8
34.6
37.2
39.8
32.0
34.3
36.7
32.7
35.0
37.6
33.5
35.9
38.6
30.9
33.1
35.5
31.6
33.8
36.3
32.3
34.7
37.2
28.7
30.8
33.1
29.3
31.5
33.8
29.9
32.1
34.5
26.4
28.4
30.5
27.0
29.1
31.4
27.5
29.8
32.1
HEATING
Sensible
Capacity
(MBTUH)
Heat of
Rejection
(MBTUH)
Power
Input (kW)
EER
31.6
32.5
33.4
31.9
32.9
33.9
32.3
33.3
34.3
30.7
31.7
32.7
31.0
32.1
33.1
31.3
32.4
33.4
29.7
30.8
31.9
30.1
31.1
32.1
30.4
31.4
32.5
28.8
29.8
30.9
29.2
30.2
31.3
29.5
30.5
31.7
28.4
29.4
30.6
28.7
29.8
30.9
29.0
30.0
31.1
27.9
29.1
30.2
28.2
29.3
30.5
28.5
29.6
30.8
27.0
28.2
29.4
27.2
28.4
29.6
27.4
28.7
29.9
26.1
27.4
28.5
26.3
27.6
28.7
26.6
27.8
28.9
44.4
47.1
49.8
45.1
47.8
50.5
45.8
48.6
51.4
42.8
45.4
48.0
43.4
46.0
48.7
44.1
46.8
49.6
41.3
43.7
46.2
41.8
44.4
47.0
42.4
45.0
47.8
39.8
42.2
44.6
40.3
42.7
45.2
40.8
43.3
45.8
39.1
41.4
43.7
39.5
41.8
44.3
40.0
42.4
45.0
38.4
40.5
43.0
38.8
41.0
43.5
39.2
41.6
44.1
37.0
39.2
41.4
37.4
39.6
41.9
37.8
40.0
42.3
35.8
37.8
39.9
36.1
38.2
40.4
36.3
38.6
40.9
1.44
1.42
1.39
1.37
1.34
1.30
1.29
1.25
1.21
1.64
1.61
1.59
1.56
1.53
1.50
1.48
1.45
1.41
1.85
1.83
1.81
1.77
1.75
1.72
1.69
1.66
1.63
2.09
2.08
2.06
2.01
1.99
1.96
1.93
1.90
1.87
2.22
2.22
2.19
2.14
2.13
2.10
2.06
2.04
2.00
2.36
2.36
2.33
2.28
2.27
2.24
2.19
2.17
2.14
2.66
2.65
2.63
2.58
2.56
2.54
2.49
2.47
2.44
2.98
2.97
2.96
2.90
2.88
2.86
2.82
2.79
2.76
27.5
29.9
32.5
29.7
32.5
35.4
32.3
35.6
39.1
23.0
24.8
26.9
24.6
26.8
29.2
26.5
29.1
31.9
19.1
20.6
22.3
20.4
22.1
24.1
21.9
23.9
26.0
15.9
17.1
18.5
16.9
18.2
19.8
17.9
19.5
21.3
14.4
15.5
16.7
15.3
16.5
17.9
16.3
17.6
19.3
13.1
14.1
15.2
13.9
14.9
16.2
14.7
16.0
17.4
10.8
11.6
12.6
11.4
12.3
13.3
12.0
13.0
14.1
8.8
9.6
10.3
9.3
10.1
11.0
9.8
10.7
11.6
Entering Fluid
Temp (°F)
Pressure
Drop PSI
(FOH)
1.2
(2.8)
30
2.0
(4.7)
4.2
(9.8)
1.2
(2.7)
40
2.0
(4.6)
4.1
(9.5)
1.1
(2.6)
50
1.9
(4.4)
4.0
(9.1)
1.1
(2.5)
60
1.8
(4.3)
3.8
(8.8)
1.1
(2.5)
70
1.8
(4.1)
3.7
(8.6)
1.0
(2.4)
80
1.7
(4.0)
3.6
(8.3)
Entering
Air Temp
(°F)
Total
Capacity
(MBTUH)
Heat of
Absorption
(MBTUH)
Power
Input
(kW)
COP
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
25.7
24.9
24.1
26.4
25.5
24.7
27.2
26.2
25.2
29.4
28.5
27.6
30.3
29.3
28.3
31.3
30.2
29.1
33.3
32.4
31.4
34.4
33.3
32.4
35.6
34.4
33.4
37.6
36.5
35.5
38.9
37.7
36.6
40.3
39.0
37.8
42.1
40.9
39.8
43.6
42.3
41.1
45.3
43.9
42.5
46.8
45.5
44.3
48.5
47.1
45.8
50.5
48.9
47.4
19.3
17.7
16.1
20.0
18.3
16.6
20.8
19.0
17.2
22.9
21.2
19.4
23.8
22.0
20.1
24.8
22.8
20.9
26.8
25.0
23.1
27.9
25.9
24.0
29.1
27.0
25.0
31.0
29.1
27.1
32.3
30.2
28.2
33.8
31.6
29.4
35.5
33.4
31.3
37.1
34.8
32.6
38.8
36.4
34.0
40.2
38.0
35.8
42.0
39.6
37.3
44.0
41.4
38.9
1.95
2.18
2.43
1.95
2.18
2.44
1.95
2.18
2.44
1.96
2.20
2.46
1.96
2.20
2.47
1.96
2.21
2.47
1.97
2.22
2.49
1.97
2.22
2.50
1.97
2.23
2.51
1.98
2.24
2.51
1.98
2.24
2.52
1.98
2.24
2.52
1.99
2.25
2.53
1.99
2.25
2.54
1.99
2.25
2.54
1.99
2.25
2.55
1.99
2.26
2.56
1.99
2.26
2.56
3.9
3.4
2.9
4.0
3.4
3.0
4.1
3.5
3.0
4.4
3.8
3.3
4.5
3.9
3.4
4.7
4.0
3.4
5.0
4.3
3.7
5.1
4.4
3.8
5.3
4.5
3.9
5.6
4.8
4.1
5.7
4.9
4.3
6.0
5.1
4.4
6.2
5.3
4.6
6.4
5.5
4.7
6.7
5.7
4.9
6.9
5.9
5.1
7.2
6.1
5.3
7.5
6.3
5.4
Extended Range - Anti-freeze required
AHRI/ISO13256-1 certified performance is rated at entering air conditions of 80.6°F DB and 66.2°F
WB in cooling and 68°F DB in heating.
Tabulated unit performance does not include fan or pump power corrections required for AHRI/ISO
standard performance ratings.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection software.
Ratings below 40°F are with a methanol solution.
Due to variations in installation, actual performance may vary from the tabulated data. Performance
contained herein are as a result of extensive testing by FHP and are not express warranties between
the parties and may be changed at any time.
Continuous research and development to improve our products may result in a change to the current
design and specifications without notice.
fhp-mfg.com | 26
Capacity Data
LM048 – Full Load (1600 CFM @ 0.6" ESP)
COOLING
Entering
Fluid Temp
(°F)
50
60
70
80
85
90
100
110
Water
Flow
(GPM)
Pressure
Drop PSI
(FOH)
6
1.1
(2.6)
8
1.9
(4.4)
12
3.9
(9.1)
6
1.1
(2.5)
8
1.9
(4.3)
12
3.8
(8.8)
6
1.1
(2.5)
8
1.8
(4.1)
12
3.7
(8.6)
6
1.0
(2.4)
8
1.7
(4)
12
3.6
(8.3)
6
1.0
(2.3)
8
1.7
(3.9)
12
3.5
(8.1)
6
1.0
(2.3)
8
1.7
(3.9)
12
3.5
(8)
6
1.0
(2.2)
8
1.6
(3.8)
12
3.4
(7.8)
6
1.0
(2.2)
8
1.6
(3.6)
12
3.3
(7.6)
Entering Air Temp Total Capacity
(db/wb) °F
(MBTUH)
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
52.3
55.6
59.2
53.6
57.1
60.8
54.9
58.7
62.5
49.9
53.2
56.7
51.2
54.6
58.1
52.5
56.1
59.8
47.5
50.8
53.9
48.7
52.0
55.4
50.1
53.5
57.1
45.2
48.2
51.3
46.2
49.5
52.6
47.5
50.8
54.1
43.8
46.8
49.8
45.0
48.1
51.3
46.1
49.4
52.6
42.6
45.5
48.5
43.6
46.8
49.8
44.7
48.0
51.3
40.0
42.7
45.5
41.0
43.9
46.8
42.1
45.1
48.1
37.4
39.9
42.7
38.3
41.1
43.8
39.4
42.0
45.1
HEATING
Sensible
Capacity
(MBTUH)
Heat of
Rejection
(MBTUH)
Power
Input (kW)
EER
40.1
41.3
42.3
40.6
41.8
42.8
41.3
42.4
43.5
39.1
40.3
41.4
39.6
40.9
42.0
40.2
41.3
42.5
38.1
39.3
40.5
38.6
39.9
41.0
39.0
40.3
41.5
37.0
38.3
39.4
37.6
38.7
40.1
38.0
39.2
40.6
36.6
37.9
39.1
36.9
38.2
39.4
37.5
38.7
40.1
36.1
37.4
38.6
36.5
37.7
39.1
37.0
38.2
39.4
35.0
36.3
37.6
35.5
36.8
38.0
35.8
37.1
38.5
34.0
35.3
36.6
34.4
35.7
37.0
34.7
36.1
37.4
60.4
63.9
67.6
61.4
64.9
68.8
62.3
66.2
70.1
58.7
62.1
65.7
59.6
63.1
66.7
60.5
64.3
68.0
57.0
60.4
63.7
57.9
61.3
64.7
58.8
62.3
66.0
55.5
58.7
62.0
56.2
59.5
62.8
57.0
60.4
63.8
54.7
57.8
61.0
55.4
58.7
62.0
56.1
59.5
62.8
54.0
57.0
60.1
54.6
57.8
60.9
55.2
58.6
62.0
52.5
55.4
58.4
53.1
56.1
59.1
53.7
56.8
59.9
51.3
54.0
57.0
51.7
54.6
57.5
52.3
55.0
58.1
2.48
2.50
2.53
2.36
2.38
2.40
2.24
2.26
2.27
2.69
2.72
2.75
2.57
2.59
2.61
2.46
2.47
2.48
2.93
2.96
2.99
2.81
2.83
2.85
2.69
2.70
2.71
3.21
3.24
3.27
3.08
3.10
3.12
2.95
2.96
2.97
3.37
3.40
3.43
3.23
3.25
3.27
3.10
3.11
3.12
3.53
3.56
3.60
3.39
3.42
3.44
3.25
3.27
3.28
3.90
3.94
3.97
3.75
3.78
3.80
3.61
3.62
3.63
4.33
4.38
4.42
4.17
4.20
4.23
4.02
4.03
4.04
21.1
22.2
23.4
22.7
24.0
25.3
24.5
26.0
27.6
18.5
19.6
20.6
19.9
21.1
22.3
21.4
22.7
24.1
16.2
17.1
18.0
17.3
18.4
19.4
18.6
19.8
21.1
14.1
14.9
15.7
15.0
15.9
16.8
16.1
17.1
18.2
13.0
13.8
14.5
13.9
14.8
15.7
14.9
15.9
16.9
12.1
12.8
13.5
12.8
13.7
14.5
13.7
14.7
15.6
10.2
10.8
11.4
10.9
11.6
12.3
11.7
12.5
13.2
8.6
9.1
9.7
9.2
9.8
10.4
9.8
10.4
11.1
Entering Fluid
Temp (°F)
Pressure
Drop PSI
(FOH)
1.2
(2.8)
30
2.0
(4.7)
4.2
(9.8)
1.2
(2.7)
40
2.0
(4.6)
4.1
(9.5)
1.1
(2.6)
50
1.9
(4.4)
4.0
(9.1)
1.1
(2.5)
60
1.8
(4.3)
3.8
(8.8)
1.1
(2.5)
70
1.8
(4.1)
3.7
(8.6)
1.0
(2.4)
80
1.7
(4.0)
3.6
(8.3)
Entering
Air Temp
(°F)
Total
Capacity
(MBTUH)
Heat of
Absorption
(MBTUH)
Power
Input
(kW)
COP
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
34.6
34.3
33.9
35.9
35.5
35.0
37.3
36.8
36.0
39.5
38.9
38.5
41.2
40.3
39.8
42.9
42.0
41.2
44.9
44.2
43.5
46.8
45.9
45.1
49.0
47.9
46.9
50.6
49.7
48.9
52.9
51.8
50.8
55.4
54.1
52.9
56.6
55.5
54.6
59.1
57.8
56.7
62.1
60.5
59.1
62.7
61.4
60.3
65.6
64.2
62.8
69.1
67.2
65.7
25.7
24.1
22.6
26.9
25.1
23.5
28.2
26.3
24.6
30.3
28.7
26.9
31.7
30.0
28.1
33.4
31.4
29.5
35.1
33.3
31.5
36.9
35.0
33.0
39.0
36.7
34.7
40.4
38.4
36.5
42.6
40.4
38.3
45.0
42.6
40.1
46.0
43.9
41.5
48.4
46.0
43.8
51.4
48.7
46.0
51.9
49.5
47.0
54.6
52.0
49.3
57.9
54.9
51.5
2.67
2.98
3.31
2.70
3.01
3.34
2.73
3.04
3.37
2.79
3.09
3.42
2.82
3.12
3.45
2.86
3.16
3.48
2.90
3.20
3.52
2.94
3.23
3.56
2.98
3.27
3.60
3.01
3.31
3.64
3.05
3.35
3.68
3.10
3.40
3.73
3.12
3.42
3.77
3.16
3.47
3.82
3.21
3.52
3.88
3.22
3.54
3.90
3.27
3.60
3.96
3.33
3.66
4.03
3.8
3.4
3.0
3.9
3.5
3.1
4.0
3.6
3.1
4.2
3.7
3.3
4.3
3.8
3.4
4.4
3.9
3.5
4.5
4.0
3.6
4.7
4.2
3.7
4.8
4.3
3.8
4.9
4.4
3.9
5.1
4.5
4.0
5.2
4.7
4.2
5.3
4.8
4.2
5.5
4.9
4.4
5.7
5.0
4.5
5.7
5.1
4.5
5.9
5.2
4.6
6.1
5.4
4.8
Extended Range - Anti-freeze required
AHRI/ISO13256-1 certified performance is rated at entering air conditions of 80.6°F DB and 66.2°F
WB in cooling and 68°F DB in heating.
Tabulated unit performance does not include fan or pump power corrections required for AHRI/ISO
standard performance ratings.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection software.
Ratings below 40°F are with a methanol solution.
Due to variations in installation, actual performance may vary from the tabulated data. Performance
contained herein are as a result of extensive testing by FHP and are not express warranties between
the parties and may be changed at any time.
Continuous research and development to improve our products may result in a change to the current
design and specifications without notice.
Subject to change without prior notice.
27 | LM Model | Commercial Geothermal Heat Pumps
Capacity Data
LM060 – Part Load (1600 CFM @ 0.6" ESP)
COOLING
Entering
Fluid Temp
(°F)
50
60
70
80
85
90
100
110
Water
Flow
(GPM)
Pressure
Drop PSI
(FOH)
7.5
1,2
(2.8)
10
2.0
(4.7)
15
4.2
(9.7)
7.5
1.1
(2.6)
10
1.9
(4.4)
15
3.9
(9.1)
7.5
1.1
(2.6)
10
1.9
(4.4)
15
3.9
(9.1)
7.5
1.1
(2.5)
10
1.8
(4.2)
15
3.8
(8.8)
7.5
1.1
(2.5)
10
1.8
(4.2)
15
3.7
(8.5)
7.5
1.0
(2.4)
10
1.8
(4.1)
15
3.7
(8.5)
7.5
1.0
(2.4)
10
1.7
(4)
15
3.6
(8.3)
7.5
1.0
(2.3)
10
1.7
(3.9)
15
3.5
(8)
Entering Air Temp Total Capacity
(db/wb) °F
(MBTUH)
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
Subject to change without prior notice.
51.0
54.3
57.8
52.0
55.5
59.2
53.1
56.8
60.4
48.1
51.4
54.9
49.1
52.5
56.0
50.2
53.8
57.4
45.4
48.5
51.7
46.2
49.6
52.9
47.2
50.7
54.1
42.4
45.5
48.6
43.3
46.4
49.7
44.2
47.5
50.9
41.1
44.0
47.0
41.8
44.9
48.0
42.8
45.8
49.1
39.6
42.4
45.4
40.4
43.3
46.4
41.2
44.3
47.4
36.7
39.4
42.3
37.4
40.2
43.2
38.1
41.0
44.1
33.8
36.5
38.7
34.5
37.2
39.6
35.1
38.0
40.9
HEATING
Sensible
Capacity
(MBTUH)
Heat of
Rejection
(MBTUH)
Power
Input (kW)
EER
39.6
40.9
42.0
40.1
41.3
42.4
40.6
41.7
43.0
38.5
39.8
40.9
38.9
40.2
41.4
39.3
40.5
41.8
37.2
38.6
39.9
37.7
38.9
40.3
38.1
39.4
40.7
36.1
37.5
38.8
36.5
37.8
39.2
36.8
38.2
39.4
35.5
36.9
38.2
35.9
37.3
38.6
36.2
37.6
39.0
35.0
36.4
37.7
35.3
36.7
38.0
35.6
36.9
38.4
33.8
35.2
36.6
34.1
35.5
36.9
34.4
35.8
37.2
32.6
34.2
35.4
32.8
34.4
35.7
33.2
34.6
36.1
57.1
60.3
63.7
57.8
61.2
64.8
58.7
62.3
65.8
54.9
58.2
61.6
55.7
59.0
62.4
56.4
59.9
63.5
53.0
56.0
59.2
53.5
56.8
60.1
54.3
57.6
60.9
50.9
53.9
57.0
51.5
54.5
57.8
52.2
55.3
58.7
50.1
52.9
55.9
50.5
53.5
56.6
51.2
54.2
57.4
49.1
51.9
54.9
49.6
52.5
55.5
50.1
53.2
56.2
47.3
50.0
52.9
47.8
50.5
53.5
48.2
51.1
54.0
45.7
48.4
50.6
46.1
48.8
51.2
46.4
49.2
52.1
1.86
1.83
1.80
1.78
1.74
1.71
1.70
1.66
1.62
2.09
2.06
2.03
2.00
1.97
1.93
1.92
1.88
1.84
2.35
2.32
2.29
2.26
2.23
2.19
2.17
2.13
2.09
2.65
2.62
2.59
2.56
2.52
2.49
2.47
2.42
2.38
2.81
2.79
2.76
2.72
2.68
2.65
2.62
2.58
2.54
2.98
2.96
2.93
2.89
2.86
2.82
2.79
2.75
2.71
3.34
3.33
3.30
3.25
3.22
3.20
3.16
3.13
3.08
3.74
3.72
3.71
3.65
3.62
3.60
3.56
3.53
3.49
27.4
29.7
32.1
29.2
31.8
34.6
31.3
34.2
37.4
23.0
24.9
27.0
24.5
26.7
29.0
26.2
28.6
31.3
19.3
20.9
22.5
20.4
22.2
24.1
21.7
23.8
25.9
16.0
17.3
18.7
16.9
18.4
20.0
17.9
19.6
21.4
14.6
15.8
17.0
15.4
16.7
18.1
16.3
17.7
19.3
13.3
14.3
15.5
14.0
15.1
16.4
14.7
16.1
17.5
11.0
11.8
12.8
11.5
12.5
13.5
12.1
13.1
14.3
9.0
9.8
10.4
9.4
10.3
11.0
9.9
10.8
11.7
Entering Fluid
Temp (°F)
Pressure
Drop PSI
(FOH)
1.3
(3.0)
30
2.2
(5.0)
4.5
(10.4)
1.3
(2.9)
40
2.1
(4.9)
4.4
(10.1)
1.2
(2.8)
50
2.0
(4.7)
4.2
(9.7)
1.2
(2.7)
60
2.0
(4.5)
4.1
(9.4)
1.1
(2.6)
70
1.9
(4.4)
3.9
(9.1)
1.1
(2.5)
80
1.8
(4.2)
3.8
(8.8)
Entering
Air Temp
(°F)
Total
Capacity
(MBTUH)
Heat of
Absorption
(MBTUH)
Power
Input
(kW)
COP
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
33.7
32.5
31.3
34.6
33.3
31.9
35.6
34.4
32.7
38.5
37.1
35.9
39.6
38.1
36.7
40.8
39.3
38.0
43.6
42.3
41.0
45.0
43.6
42.1
46.5
44.8
43.4
49.2
47.7
46.4
50.8
49.2
47.7
52.6
50.9
49.1
54.9
53.4
51.7
56.9
55.1
53.5
59.0
57.1
55.2
60.9
59.2
57.4
63.2
61.1
59.4
65.6
63.4
61.3
25.2
22.9
20.8
26.1
23.7
21.4
27.0
24.4
22.2
29.9
27.6
25.3
31.0
28.6
26.3
32.3
29.7
27.0
35.0
32.4
29.9
36.4
33.7
31.3
38.0
35.4
32.1
40.4
37.9
35.1
42.1
39.4
36.3
44.1
41.1
38.4
46.2
43.4
40.8
48.2
45.2
41.8
50.4
47.2
44.1
52.2
49.2
46.2
54.5
51.3
47.7
57.0
53.6
50.2
2.56
2.85
3.17
2.57
2.85
3.17
2.57
2.86
3.18
2.59
2.89
3.22
2.60
2.90
3.23
2.60
2.91
3.24
2.62
2.93
3.26
2.63
2.94
3.27
2.63
2.94
3.28
2.64
2.96
3.30
2.65
2.96
3.31
2.65
2.97
3.32
2.66
2.98
3.34
2.66
2.99
3.35
2.66
2.99
3.36
2.66
3.00
3.37
2.66
3.00
3.38
2.66
3.01
3.38
3.9
3.3
2.9
4.0
3.4
2.9
4.1
3.5
3.0
4.4
3.8
3.3
4.5
3.9
3.3
4.6
4.0
3.4
4.9
4.2
3.7
5.0
4.4
3.8
5.2
4.5
3.9
5.5
4.7
4.1
5.6
4.9
4.2
5.8
5.0
4.3
6.1
5.3
4.5
6.3
5.4
4.7
6.5
5.6
4.8
6.7
5.8
5.0
7.0
6.0
5.2
7.2
6.2
5.3
Extended Range - Anti-freeze required
AHRI/ISO13256-1 certified performance is rated at entering air conditions of 80.6°F DB and 66.2°F
WB in cooling and 68°F DB in heating.
Tabulated unit performance does not include fan or pump power corrections required for AHRI/ISO
standard performance ratings.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection software.
Ratings below 40°F are with a methanol solution.
Due to variations in installation, actual performance may vary from the tabulated data. Performance
contained herein are as a result of extensive testing by FHP and are not express warranties between
the parties and may be changed at any time.
Continuous research and development to improve our products may result in a change to the current
design and specifications without notice.
fhp-mfg.com | 28
Capacity Data
LM060 – Full Load (2000 CFM @ 0.6" ESP)
COOLING
Entering
Fluid Temp
(°F)
50
60
70
80
85
90
100
110
Water
Flow
(GPM)
Pressure
Drop PSI
(FOH)
7.5
1,2
(2.8)
10
2.0
(4.7)
15
4.2
(9.7)
7.5
1.1
(2.6)
10
1.9
(4.4)
15
3.9
(9.1)
7.5
1.1
(2.6)
10
1.9
(4.4)
15
3.9
(9.1)
7.5
1.1
(2.5)
10
1.8
(4.2)
15
3.8
(8.8)
7.5
1.1
(2.5)
10
1.8
(4.2)
15
3.7
(8.5)
7.5
1.0
(2.4)
10
1.8
(4.1)
15
3.7
(8.5)
7.5
1.0
(2.4)
10
1.7
(4)
15
3.6
(8.3)
7.5
1.0
(2.3)
10
1.7
(3.9)
15
3.5
(8)
Entering Air Temp Total Capacity
(db/wb) °F
(MBTUH)
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
66.7
70.9
75.3
68.0
72.6
77.2
69.5
74.0
78.9
63.8
68.0
72.4
65.3
69.6
73.9
66.6
71.0
75.8
61.0
65.1
69.0
62.4
66.4
70.7
63.7
68.0
72.5
58.0
61.8
65.7
59.3
63.4
67.3
60.6
64.7
69.1
56.6
60.4
64.1
57.8
61.6
65.7
59.0
63.0
67.2
55.1
58.5
62.3
56.3
60.1
63.9
57.3
61.4
65.5
51.9
55.2
58.8
53.1
56.7
60.3
54.0
57.9
61.8
48.7
51.8
55.3
49.8
53.2
56.7
50.8
54.2
57.9
HEATING
Sensible
Capacity
(MBTUH)
Heat of
Rejection
(MBTUH)
Power
Input (kW)
EER
50.5
52.0
53.4
51.2
52.6
53.9
51.8
53.4
54.7
49.4
50.9
52.1
49.8
51.3
52.9
50.5
52.1
53.4
48.2
49.6
51.1
48.6
50.3
51.7
49.2
50.7
52.2
47.0
48.5
50.0
47.5
48.9
50.5
47.9
49.6
50.9
46.2
47.8
49.4
46.8
48.4
49.8
47.2
48.9
50.5
45.6
47.2
48.8
46.1
47.7
49.3
46.7
48.1
49.7
44.5
46.0
47.5
44.8
46.5
48.1
45.3
47.0
48.6
43.2
44.7
46.3
43.5
45.2
46.8
43.9
45.6
47.2
77.1
81.5
86.2
78.1
82.9
87.7
79.2
84.0
89.0
75.0
79.4
84.0
76.1
80.6
85.1
77.1
81.6
86.6
73.0
77.4
81.5
74.0
78.2
82.7
74.9
79.4
84.1
71.1
75.1
79.2
71.9
76.2
80.3
72.9
77.0
81.6
70.3
74.3
78.2
71.0
75.0
79.3
71.8
75.9
80.2
69.4
72.9
77.0
70.1
74.1
78.1
70.7
74.9
79.1
67.6
71.0
74.8
68.3
72.0
75.8
68.7
72.7
76.7
66.0
69.3
73.0
66.6
70.1
73.7
67.1
70.6
74.3
3.16
3.21
3.27
3.04
3.10
3.15
2.94
2.98
3.04
3.40
3.45
3.51
3.28
3.32
3.37
3.16
3.20
3.24
3.68
3.73
3.78
3.55
3.59
3.63
3.42
3.46
3.49
4.01
4.05
4.10
3.87
3.90
3.94
3.73
3.76
3.79
4.19
4.24
4.28
4.05
4.08
4.12
3.91
3.93
3.96
4.39
4.43
4.48
4.24
4.27
4.30
4.09
4.12
4.14
4.82
4.86
4.91
4.67
4.69
4.73
4.51
4.53
4.56
5.33
5.37
5.41
5.16
5.19
5.22
5.01
5.02
5.03
21.1
22.1
23.0
22.3
23.4
24.5
23.7
24.8
26.0
18.8
19.7
20.6
19.9
20.9
21.9
21.1
22.2
23.4
16.6
17.4
18.3
17.6
18.5
19.5
18.6
19.7
20.7
14.5
15.2
16.0
15.3
16.2
17.1
16.2
17.2
18.2
13.5
14.2
15.0
14.3
15.1
16.0
15.1
16.0
17.0
12.5
13.2
13.9
13.3
14.1
14.8
14.0
14.9
15.8
10.8
11.4
12.0
11.4
12.1
12.8
12.0
12.8
13.6
9.1
9.6
10.2
9.6
10.3
10.9
10.1
10.8
11.5
Entering Fluid
Temp (°F)
Pressure
Drop PSI
(FOH)
1.3
(3.0)
30
2.2
(5.0)
4.5
(10.4)
1.3
(2.9)
40
2.1
(4.9)
4.4
(10.1)
1.2
(2.8)
50
2.0
(4.7)
4.2
(9.7)
1.2
(2.7)
60
2.0
(4.5)
4.1
(9.4)
1.1
(2.6)
70
1.9
(4.4)
3.9
(9.1)
1.1
(2.5)
80
1.8
(4.2)
3.8
(8.8)
Entering
Air Temp
(°F)
Total
Capacity
(MBTUH)
Heat of
Absorption
(MBTUH)
Power
Input
(kW)
COP
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
45.9
45.2
44.6
47.4
46.6
45.8
49.1
48.1
47.3
52.0
51.2
50.5
53.9
52.9
52.1
56.0
54.9
53.9
58.8
57.9
57.0
61.1
59.9
58.8
63.6
62.3
61.0
65.9
64.7
63.7
68.8
67.3
66.0
71.8
70.1
68.7
73.5
72.1
70.8
76.8
75.1
73.6
80.4
78.4
76.8
81.5
79.8
78.2
85.2
83.2
81.3
89.3
87.1
84.8
34.1
32.1
30.2
35.5
33.4
31.3
36.8
34.8
32.7
39.7
37.7
35.6
41.5
39.3
37.1
43.2
40.8
38.8
45.9
43.6
41.3
48.5
45.8
43.4
50.5
48.1
45.4
52.9
50.3
48.2
55.7
52.8
50.0
58.1
55.2
52.4
60.0
57.2
54.4
63.0
60.0
57.0
66.2
62.7
59.4
67.3
64.3
61.2
70.9
67.5
64.1
74.5
71.7
67.3
3.51
3.87
4.25
3.54
3.90
4.28
3.57
3.93
4.31
3.64
3.99
4.38
3.67
4.03
4.42
3.71
4.07
4.46
3.76
4.13
4.53
3.81
4.17
4.57
3.86
4.22
4.62
3.91
4.27
4.69
3.96
4.33
4.74
4.02
4.39
4.80
4.06
4.43
4.86
4.13
4.50
4.92
4.21
4.58
5.00
4.23
4.61
5.04
4.31
4.69
5.12
4.40
4.79
5.21
3.8
3.4
3.1
3.9
3.5
3.1
4.0
3.6
3.2
4.2
3.8
3.4
4.3
3.9
3.5
4.4
4.0
3.5
4.6
4.1
3.7
4.7
4.2
3.8
4.8
4.3
3.9
4.9
4.4
4.0
5.1
4.6
4.1
5.2
4.7
4.2
5.3
4.8
4.3
5.5
4.9
4.4
5.6
5.0
4.5
5.7
5.1
4.5
5.8
5.2
4.7
5.9
5.3
4.8
Extended Range - Anti-freeze required
AHRI/ISO13256-1 certified performance is rated at entering air conditions of 80.6°F DB and 66.2°F
WB in cooling and 68°F DB in heating.
Tabulated unit performance does not include fan or pump power corrections required for AHRI/ISO
standard performance ratings.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection software.
Ratings below 40°F are with a methanol solution.
Due to variations in installation, actual performance may vary from the tabulated data. Performance
contained herein are as a result of extensive testing by FHP and are not express warranties between
the parties and may be changed at any time.
Continuous research and development to improve our products may result in a change to the current
design and specifications without notice.
Subject to change without prior notice.
29 | LM Model | Commercial Geothermal Heat Pumps
Capacity Data
LM070 – Part Load (1850 CFM @ 0.6" ESP)
COOLING
Entering
Fluid Temp
(°F)
50
60
70
80
85
90
100
110
Water
Flow
(GPM)
Pressure
Drop PSI
(FOH)
9
0.9
(2.1)
12
1.5
(3.5)
18
3.2
(7.3)
9
0.9
(2)
12
1.5
(3.4)
18
3.1
(7.1)
9
0.9
(2.0)
12
1.4
(3.3)
18
3.0
(6.9)
9
0.8
(1.9)
12
1.4
(3.2)
18
2.9
(6.6)
9
0.8
(1.9)
12
1.3
(3.1)
18
2.8
(6.5)
9
0.8
(1.8)
12
1.3
(3.1)
18
2.8
(6.4)
9
0.8
(1.8)
12
1.3
(3)
18
2.7
(6.2)
9
0.7
(1.7)
12
1.3
(2.9)
18
2.6
(6.1)
Entering Air Temp Total Capacity
(db/wb) °F
(MBTUH)
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
Subject to change without prior notice.
58.7
62.5
66.4
59.8
63.9
67.9
61.1
65.1
69.5
55.9
59.6
63.5
57.1
61.0
64.9
58.2
62.1
66.2
53.1
56.7
60.3
54.2
57.8
61.6
55.3
59.1
63.1
50.3
53.7
57.2
51.3
54.7
58.3
52.3
55.9
59.6
48.8
52.1
55.4
49.7
53.2
56.7
50.7
54.3
57.9
47.4
50.6
53.9
48.2
51.5
54.9
49.2
52.7
56.2
44.2
47.3
50.5
45.2
48.4
51.6
46.0
49.3
52.8
41.1
44.1
47.4
41.9
45.1
48.4
42.8
45.9
49.3
HEATING
Sensible
Capacity
(MBTUH)
Heat of
Rejection
(MBTUH)
Power
Input (kW)
EER
45.7
47.1
48.4
46.2
47.5
48.8
46.6
48.1
49.3
44.6
46.0
47.2
44.9
46.4
47.7
45.5
46.9
48.3
43.4
44.8
46.2
43.8
45.3
46.7
44.2
45.7
47.0
42.1
43.6
45.0
42.5
44.1
45.5
42.9
44.5
46.0
41.5
43.1
44.5
42.0
43.4
45.0
42.4
43.9
45.4
40.9
42.4
44.0
41.4
42.9
44.3
41.7
43.2
44.8
39.8
41.3
42.8
40.0
41.7
43.2
40.5
42.0
43.6
38.4
40.1
41.8
38.8
40.4
42.1
39.1
40.8
42.4
66.2
70.0
73.9
67.0
71.0
75.1
68.0
71.9
76.2
64.3
68.0
71.9
65.1
68.9
72.9
65.8
69.8
73.8
62.3
66.0
69.6
63.0
66.7
70.5
63.9
67.6
71.6
60.6
64.1
67.7
61.2
64.7
68.3
61.9
65.4
69.2
59.7
63.0
66.4
60.2
63.8
67.3
60.8
64.4
68.1
58.9
62.2
65.5
59.3
62.7
66.1
59.9
63.5
67.0
57.1
60.3
63.5
57.7
60.9
64.2
58.1
61.4
64.9
55.5
58.6
61.9
56.0
59.2
62.4
56.4
59.5
62.9
2.28
2.28
2.27
2.18
2.17
2.15
2.08
2.05
2.03
2.55
2.55
2.54
2.44
2.43
2.42
2.33
2.31
2.29
2.85
2.85
2.85
2.73
2.73
2.72
2.62
2.60
2.59
3.19
3.19
3.20
3.07
3.06
3.06
2.95
2.94
2.92
3.37
3.38
3.39
3.25
3.25
3.25
3.13
3.12
3.11
3.57
3.58
3.59
3.45
3.45
3.45
3.32
3.31
3.30
4.01
4.01
4.03
3.88
3.88
3.88
3.75
3.74
3.73
4.51
4.50
4.48
4.37
4.37
4.34
4.24
4.23
4.20
25.7
27.4
29.2
27.4
29.5
31.6
29.4
31.7
34.3
21.9
23.4
24.9
23.4
25.1
26.8
25.0
26.9
28.9
18.6
19.9
21.1
19.8
21.2
22.6
21.1
22.7
24.4
15.8
16.8
17.9
16.7
17.8
19.0
17.7
19.0
20.4
14.5
15.4
16.3
15.3
16.4
17.4
16.2
17.4
18.6
13.3
14.1
15.0
14.0
14.9
15.9
14.8
15.9
17.0
11.0
11.8
12.5
11.6
12.5
13.3
12.3
13.2
14.1
9.1
9.8
10.6
9.6
10.3
11.1
10.1
10.9
11.7
Entering Fluid
Temp (°F)
Pressure
Drop PSI
(FOH)
1.0
(2.3)
30
1.6
(3.8)
3.4
(7.9)
0.9
(2.2)
40
1.6
(3.7)
3.3
(7.6)
0.9
(2.1)
50
1.5
(3.5)
3.2
(7.3)
0.9
(2.0)
60
1.5
(3.4)
3.1
(7.1)
0.9
(2.0)
70
1.4
(3.3)
3.0
(6.9)
0.8
(1.9)
80
1.4
(3.2)
2.9
(6.6)
Entering
Air Temp
(°F)
Total
Capacity
(MBTUH)
Heat of
Absorption
(MBTUH)
Power
Input
(kW)
COP
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
39.9
38.9
37.5
40.0
39.4
38.9
42.2
40.9
40.0
45.2
44.3
43.1
46.8
44.9
45.1
45.7
46.8
45.7
51.4
50.3
49.8
53.2
52.3
50.8
55.3
53.8
52.0
58.2
56.9
55.8
60.4
58.8
58.8
63.1
58.1
59.3
65.3
63.7
62.1
67.6
66.2
66.0
70.7
68.9
67.3
72.6
71
70.6
75.7
73.7
73.3
78.9
76.6
70.0
29.3
26.8
24.5
30.1
28.9
25.9
30.5
29.6
27.4
35.1
32.5
31.7
36.3
33.0
32.1
38.3
34.8
32.8
41.2
38.1
36.6
42.9
40.7
39.9
44.8
42.1
38.4
47.3
44.6
41.9
49.3
47.0
45.1
52.0
47.7
45.4
54.3
51.4
48.8
57.3
53.6
50.9
59.3
55.5
53.7
61.5
58.2
57.2
64.2
60.7
59.2
68.0
64.8
66.5
3.05
3.38
3.76
3.05
3.39
3.78
3.06
3.40
3.80
3.09
3.44
3.83
3.10
3.44
3.84
3.06
3.46
3.85
3.14
3.48
3.89
3.15
3.51
3.91
3.16
3.52
3.91
3.18
3.55
3.95
3.19
3.56
3.98
3.21
3.51
3.99
3.22
3.61
4.02
3.24
3.63
4.07
3.26
3.65
4.09
3.28
3.67
4.12
3.30
3.70
4.15
3.32
3.73
4.09
3.8
3.4
2.9
3.8
3.4
3.0
4.0
3.5
3.1
4.3
3.8
3.3
4.4
3.8
3.4
4.4
4.0
3.5
4.8
4.2
3.8
5.0
4.4
3.8
5.1
4.5
3.9
5.4
4.7
4.1
5.6
4.8
4.3
5.8
4.9
4.4
5.9
5.2
4.5
6.1
5.4
4.8
6.4
5.5
4.8
6.5
5.7
5.0
6.7
5.8
5.2
7.0
6.0
5.0
Extended Range - Anti-freeze required
AHRI/ISO13256-1 certified performance is rated at entering air conditions of 80.6°F DB and 66.2°F
WB in cooling and 68°F DB in heating.
Tabulated unit performance does not include fan or pump power corrections required for AHRI/ISO
standard performance ratings.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection software.
Ratings below 40°F are with a methanol solution.
Due to variations in installation, actual performance may vary from the tabulated data. Performance
contained herein are as a result of extensive testing by FHP and are not express warranties between
the parties and may be changed at any time.
Continuous research and development to improve our products may result in a change to the current
design and specifications without notice.
fhp-mfg.com | 30
Capacity Data
LM070 – Full Load (2350 CFM @ 0.6" ESP)
COOLING
Entering
Fluid Temp
(°F)
50
60
70
80
85
90
100
110
Water
Flow
(GPM)
Pressure
Drop PSI
(FOH)
9
0.9
(2.1)
12
1.5
(3.5)
18
3.2
(7.3)
9
0.9
(2)
12
1.5
(3.4)
18
3.1
(7.1)
9
0.9
(2.0)
12
1.4
(3.3)
18
3.0
(6.9)
9
0.8
(1.9)
12
1.4
(3.2)
18
2.9
(6.6)
9
0.8
(1.9)
12
1.3
(3.1)
18
2.8
(6.5)
9
0.8
(1.8)
12
1.3
(3.1)
18
2.8
(6.4)
9
0.8
(1.8)
12
1.3
(3)
18
2.7
(6.2)
9
0.7
(1.7)
12
1.3
(2.9)
18
2.6
(6.1)
Entering Air Temp Total Capacity
(db/wb) °F
(MBTUH)
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
75/63
80/67
85/71
74.7
79.4
84.4
76.3
81.4
86.5
78.1
83.4
88.9
71.6
76.1
81.1
73.2
78.1
83.2
74.9
79.8
85.1
68.4
72.7
77.4
69.8
74.4
79.3
71.5
76.3
81.6
64.9
69.2
73.8
66.5
70.8
75.3
68.0
72.6
77.5
63.3
67.4
71.7
64.8
69.0
73.6
66.2
70.8
75.4
61.6
65.7
69.9
63.0
67.2
71.5
64.4
68.8
73.5
58.3
62.2
66.1
59.5
63.6
67.8
60.9
65.1
69.5
54.9
58.4
64.9
56.1
60.0
64.6
57.1
61.3
65.3
HEATING
Sensible
Capacity
(MBTUH)
Heat of
Rejection
(MBTUH)
Power
Input (kW)
EER
56.2
58.1
59.7
56.9
58.5
60.5
57.6
59.3
60.9
54.8
56.8
58.2
55.5
57.2
58.8
56.3
58.3
60.0
53.4
55.5
57.0
54.4
56.2
58.0
54.8
56.9
58.2
52.3
54.0
55.5
52.7
54.8
57.1
53.3
55.4
57.1
51.6
53.5
55.2
51.9
54.1
55.6
52.5
54.3
56.6
51.0
52.8
54.5
51.6
53.4
55.4
51.9
54.0
55.5
49.6
51.5
53.2
50.2
52.0
53.7
50.5
52.4
54.2
48.1
50.1
43.2
48.6
50.1
50.1
49.5
50.9
53.0
86.9
91.8
97.0
88.1
93.3
98.6
89.3
94.8
100.5
84.7
89.4
94.6
85.8
90.9
96.2
87.0
92.1
97.6
82.5
87.1
92.0
83.4
88.3
93.2
84.7
89.5
95.0
80.2
84.8
89.5
81.3
85.8
90.4
82.3
87.0
92.0
79.3
83.6
88.1
80.2
84.6
89.4
81.2
85.9
90.5
78.3
82.6
86.9
79.1
83.5
87.9
79.9
84.5
89.4
76.4
80.5
84.7
77.1
81.3
85.6
77.9
82.3
86.7
74.8
78.5
85.3
75.3
79.4
84.2
75.7
80.1
84.1
3.69
3.74
3.79
3.54
3.59
3.63
3.38
3.42
3.46
3.99
4.03
4.08
3.83
3.87
3.91
3.67
3.70
3.73
4.32
4.36
4.41
4.15
4.19
4.22
3.99
4.02
4.05
4.69
4.74
4.78
4.52
4.55
4.58
4.35
4.38
4.40
4.88
4.93
4.98
4.72
4.75
4.78
4.55
4.58
4.59
5.09
5.14
5.18
4.92
4.96
4.99
4.76
4.78
4.80
5.55
5.60
5.64
5.37
5.41
5.44
5.20
5.22
5.25
6.10
6.14
6.21
5.90
5.93
5.97
5.71
5.74
5.75
20.2
21.2
22.2
21.6
22.7
23.9
23.1
24.4
25.7
18.0
18.9
19.9
19.1
20.2
21.3
20.4
21.5
22.8
15.8
16.7
17.6
16.8
17.7
18.8
17.9
19.0
20.1
13.8
14.6
15.4
14.7
15.5
16.4
15.6
16.6
17.6
13.0
13.7
14.4
13.7
14.5
15.4
14.5
15.5
16.4
12.1
12.8
13.5
12.8
13.6
14.3
13.5
14.4
15.3
10.5
11.1
11.7
11.1
11.8
12.5
11.7
12.5
13.2
9.0
9.5
10.4
9.5
10.1
10.8
10.0
10.7
11.3
Entering Fluid
Temp (°F)
Pressure
Drop PSI
(FOH)
1.0
(2.3)
30
1.6
(3.8)
3.4
(7.9)
0.9
(2.2)
40
1.6
(3.7)
3.3
(7.6)
0.9
(2.1)
50
1.5
(3.5)
3.2
(7.3)
0.9
(2.0)
60
1.5
(3.4)
3.1
(7.1)
0.9
(2.0)
70
1.4
(3.3)
3.0
(6.9)
0.8
(1.9)
80
1.4
(3.2)
2.9
(6.6)
Entering
Air Temp
(°F)
Total
Capacity
(MBTUH)
Heat of
Absorption
(MBTUH)
Power
Input
(kW)
COP
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
60
70
80
52.6
51.6
51.1
54.0
53.2
52.8
55.8
55.4
54.5
59.3
58.5
57.9
61.7
60.8
60.2
64.3
63.1
62.4
67.3
66.4
65.3
69.9
68.7
67.7
73.2
71.9
70.2
75.7
74.6
73.6
78.8
77.4
76.1
82.7
79.0
79.5
84.2
82.6
81.4
88.6
86.9
84.8
92.8
90.9
88.6
93.3
91.6
90.0
97.9
95.8
94.5
103.2
100.7
98.2
38.2
35.9
34.0
39.6
37.6
35.7
41.8
40.3
37.2
44.5
42.3
40.1
46.6
44.6
42.0
49.3
47.1
43.4
52.1
49.9
46.9
54.4
51.8
49.1
58.0
54.7
51.5
59.7
57.1
54.6
62.8
59.8
56.8
66.8
61.1
60.1
67.8
64.7
61.8
72.2
69.2
64.9
75.8
72.2
68.8
76.4
73.1
69.7
80.6
77.0
74.0
85.5
81.4
77.3
4.16
4.56
4.99
4.19
4.59
5.03
4.24
4.64
5.07
4.29
4.70
5.14
4.33
4.74
5.19
4.38
4.79
5.23
4.44
4.85
5.31
4.48
4.90
5.36
4.55
4.96
5.42
4.59
5.01
5.49
4.65
5.08
5.55
4.73
5.12
5.62
4.75
5.19
5.67
4.84
5.27
5.74
4.92
5.36
5.83
4.93
5.37
5.86
5.03
5.46
5.96
5.13
5.57
6.05
3.7
3.3
3.0
3.8
3.4
3.1
3.9
3.5
3.2
4.0
3.7
3.3
4.2
3.8
3.4
4.3
3.9
3.5
4.4
4.0
3.6
4.6
4.1
3.7
4.7
4.2
3.8
4.8
4.4
3.9
5.0
4.5
4.0
5.1
4.5
4.1
5.2
4.7
4.2
5.4
4.8
4.3
5.5
5.0
4.5
5.5
5.0
4.5
5.7
5.1
4.6
5.9
5.3
4.8
Extended Range - Anti-freeze required
AHRI/ISO13256-1 certified performance is rated at entering air conditions of 80.6°F DB and 66.2°F
WB in cooling and 68°F DB in heating.
Tabulated unit performance does not include fan or pump power corrections required for AHRI/ISO
standard performance ratings.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection software.
Ratings below 40°F are with a methanol solution.
Due to variations in installation, actual performance may vary from the tabulated data. Performance
contained herein are as a result of extensive testing by FHP and are not express warranties between
the parties and may be changed at any time.
Continuous research and development to improve our products may result in a change to the current
design and specifications without notice.
Subject to change without prior notice.
31 | LM Model | Commercial Geothermal Heat Pumps
Water Pressure Drop
mixture of 15% methonal / water solution.
Model
Water Flow Rate
(GPM)
Water Side
Pressure Drop
without Internal
Valve (PSI)
Water Side
Pressure Drop
with Internal Valve
(PSI)
Water Side
Pressure Drop
without Internal
Valve (FOH)
Water Side
Pressure Drop
with Internal Valve
(FOH)
LM024
3
4
5
6
7
8
0.7
1.2
1.7
2.4
3.2
4.0
2.1
3.7
5.7
8.2
11.0
14.3
1.59
2.67
3.99
5.54
7.31
9.30
4.92
8.58
13.23
18.85
25.42
32.95
LM036
4.5
6
7.5
9
10.5
12
1.3
2.2
3.2
4.5
5.9
7.5
2.1
3.6
5.5
7.7
10.3
13.3
2.98
5.01
7.48
10.39
13.71
17.43
4.85
8.33
12.68
17.87
23.89
30.74
LM048
6
8
10
12
14
16
1.1
1.8
2.7
3.7
4.9
6.2
2.5
4.3
6.7
9.5
12.7
16.5
2.46
4.12
6.16
8.55
11.28
14.35
5.78
10.03
15.40
21.86
29.40
38.01
LM060
7.5
10
12.5
15
17.5
20
1.1
1.9
2.8
3.9
5.2
6.6
2.1
3.7
5.6
7.9
10.6
13.7
2.61
4.39
6.56
9.10
12.01
15.28
4.92
8.49
12.97
18.34
24.59
31.70
LM070
9
12
15
18
21
24
0.9
1.4
2.1
3.0
3.9
5.0
2.3
4.0
6.1
8.7
11.7
15.2
1.97
3.30
4.93
6.84
9.03
11.49
5.29
9.21
14.17
20.15
27.14
35.14
NOTE: Based on 77 deg
Antifreeze Correction Data
Antifreeze
Type
Propylene
Glycol
Methanol
Ethanol
Ethylene
Glycol
Antifreeze
% volume
Cooling
Heating
EWT 90˚F
EWT 30˚F
Total Cap.
Sens. Cap
Power
Htg. Cap
0
1.000
1.000
1.000
1.000
1.000
1.000
5
0.997
0.997
1.004
0.989
0.997
1.060
10
0.994
0.994
1.006
0.986
0.995
1.125
15
0.990
0.990
1.009
0.978
0.988
1.190
25
0.983
0.983
1.016
0.960
0.979
1.300
5
0.997
0.997
1.003
0.990
0.997
1.060
10
0.996
0.996
1.005
0.979
0.993
1.100
15
0.994
0.994
1.008
0.970
0.990
1.140
5
0.998
0.998
1.002
0.981
0.994
1.160
10
0.996
0.996
1.004
0.960
0.988
1.230
15
0.992
0.992
1.006
0.944
0.983
1.280
25
0.986
0.986
1.009
0.917
0.974
1.400
5
0.997
0.997
1.003
0.993
0.998
1.060
10
0.995
0.995
1.004
0.986
0.996
1.120
15
0.992
0.992
1.005
0.980
0.993
1.190
25
0.988
0.988
1.009
0.970
0.990
1.330
30
0.985
0.985
1.012
0.965
0.987
1.400
Subject to change without prior notice.
Power
WPD Correction
Factor EWT 30˚F
fhp-mfg.com | 32
Electrical Data
Constant Torque and Constant CFM ECM
Total Unit ECM Const
Torque motor (Standard)
Compressor
Model
Voltage
Code
Rated
Voltage
Voltage
Min/Max
1
208-230/1/60
2
LM024
LM036
LM048
LM060
LM070
Total Unit ECM Const
Air Flow motor (Option)
Quantity
RLA
LRA
FLA
Min
Circuit
Amps
Max
Fuse/
HACR
FLA
Min
Circuit
Amps
Max
Fuse/
HACR
197/253
1
11.7
58.3
2.8
17.4
25
2.8
17.4
25
265-277/1/60
238-292
1
9.1
54.0
2.6
14.0
20
2.6
14.0
20
3
208-230/3/60
197/253
1
6.5
55.4
2.8
10.9
15
2.8
10.9
15
4
460/3/60
414/506
1
3.5
28.0
2.1
6.4
15
2.6
6.9
15
1
208-230/1/60
197/253
1
15.3
83.0
2.8
25.1
35
6.8
25.9
35
2
265-277/1/60
238-292
1
13.0
72.0
2.6
21.2
30
5.5
21.8
35
3
208-230/3/60
197/253
1
11.6
73.0
2.8
20.5
30
6.8
21.3
30
4
460/3/60
414/506
1
5.7
38.0
2.1
10.4
15
5.5
12.6
15
1
208-230/1/60
197/253
1
21.2
104.0
2.8
32.4
50
6.8
33.2
50
3
208-230/3/60
197/253
1
14.0
83.1
2.6
23.5
35
6.8
24.3
35
4
460/3/60
414/506
1
6.4
41.0
2.8
11.3
15
5.5
13.5
15
1
208-230/1/60
197/253
1
27.1
152.9
4.1
41.5
60
9.1
43.0
70
3
208-230/3/60
197/253
1
16.5
110.0
3.9
28.3
40
9.1
29.8
45
4
460/3/60
414/506
1
7.2
52.0
4.1
13.1
20
6.9
16.0
20
1
208-230/1/60
197/253
1
29.7
179.2
6.0
44.7
70
9.1
46.2
70
3
208-230/3/60
197/253
1
17.6
136.0
6.0
29.6
45
9.1
31.1
45
4
460/3/60
414/506
1
8.5
66.1
4.6
14.6
20
6.9
17.5
25
For units with Factory Installed Electric Heat Option, the unit will have two separate
electrical connections. There will be two separate data tags; one for each electrical circuit.
The 1st data tag is for the compressor power connection, the second is for the fan motor and
electric heat strips.
Model
Voltage Code
Voltage/
Phase/Hz
Voltage Min/
Max
Compressor
Electrical Sizing
Compressor
Quantity
RLA
LRA
Min Circuit
Amps
Max Fuse/
HACR
LM024
1
208-230/1/60
197/253
1
11.7
58.3
14.6
25
LM036
1
208-230/1/60
197/253
1
15.3
83.0
19.1
30
LM048
1
208-230/1/60
197/253
1
21.2
104.0
26.5
45
LM060
1
208-230/1/60
197/253
1
27.1
152.9
33.9
60
LM070
1
208-230/1/60
197/253
1
29.7
179.2
37.1
60
Subject to change without prior notice.
33 | LM Model | Commercial Geothermal Heat Pumps
Electrical Data
For Units with EH Option – Constant Torque ECM Model
EH
Rated
kW
Heater Watts
Stage
240
208
Heater AMPS
240V
280V
Ciruit
Motor
FLA (A)
Fuses
MCA
240V
MOP
208V
240V
208V
LM024
4.8
1
4,800
3,600
20.0
17.3
2.8
-
28.5
25.1
30
30
LM036
4.8
1
4,800
3,600
20.0
17.3
6.0
-
32.5
29.1
35
30
LM036
9.6
1
9,600
7,200
40.0
34.6
6.0
-
57.5
50.8
60
60
LM048
4.8
1
4,800
3,600
20.0
17.3
6.0
-
32.5
29.1
35
30
LM048
9.6
1
9,600
7,200
40.0
34.6
6.0
-
57.5
50.8
60
60
LM048
14.4
2
14400
10800
60
51.9
6
82.5
72.4
90
80
F1/F2
F3/F4
LM060
4.8
1
4,800
3,600
20.0
17.3
7.6
-
34.5
31.1
35
35
LM060
9.6
1
9,600
7,200
40.0
34.6
7.6
-
59.5
52.8
60
60
LM060
14.4
2
14400
10800
60
51.9
7.6
84.5
74.4
90
80
LM060
19.2
2
19200
14000
80
69.2
7.6
109.5
96.0
110
100
LM070
4.8
1
4,800
3,600
20.0
17.3
7.6
-
34.5
31.1
35
35
LM070
9.6
1
9,600
7,200
40.0
34.6
7.6
-
59.5
52.8
60
60
84.5
74.4
90
80
109.5
96.0
110
100
LM070
14.4
2
14400
10800
60
51.9
7.6
LM070
19.2
2
19200
14000
80
69.2
7.6
F1/F2
F3/F4
F1/F2
F3/F4
F1/F2
F3/F4
F1/F2
F3/F4
* Please note: Electric heat is not available for horizontal-straight through airflow configuration. Use a Bosch flanged duct heater in this application.
For Units with EH Option – Constant CFM ECM
Heater Watts
Model
EH
Rated
kW
Stage
LM024
4.8
1
Heater AMPS
Ciruit
240
208
240V
280V
Motor
FLA (A)
4,800
3,600
20.0
17.3
2.8
MCA
MOP
Fuses
240V
208V
240V
208V
-
28.5
25.1
30
30
LM036
4.8
1
4,800
3,600
20.0
17.3
6.8
-
33.5
30.1
35
35
LM036
9.6
1
9,600
7,200
40.0
34.6
6.8
-
58.5
51.8
60
60
LM048
4.8
1
4,800
3,600
20.0
17.3
6.8
-
33.5
30.1
35
35
LM048
9.6
1
9,600
7,200
40.0
34.6
6.8
-
58.5
51.8
60
60
83.5
73.4
90
80
LM048
14.4
2
14400
10800
60
51.9
6.8
F1/F2
F3/F4
LM060
4.8
1
4,800
3,600
20.0
17.3
9.1
-
36.4
33.0
40
35
LM060
9.6
1
9,600
7,200
40.0
34.6
9.1
-
61.4
54.6
70
60
LM060
14.4
2
14400
10800
60
51.9
9.1
86.4
76.3
90
80
LM060
19.2
2
19200
14000
80
69.2
9.1
111.4
97.9
125
100
F1/F2
F3/F4
F1/F2
F3/F4
LM070
4.8
1
4,800
3,600
20.0
17.3
9.1
-
36.4
33.0
40
35
LM070
9.6
1
9,600
7,200
40.0
34.6
9.1
-
61.4
54.6
70
60
LM070
14.4
2
14400
10800
60
51.9
9.1
86.4
76.3
90
80
LM070
19.2
2
19200
14000
80
69.2
9.1
111.4
97.9
125
100
F1/F2
F3/F4
F1/F2
F3/F4
* Please note: Electric heat is not available for horizontal-straight through airflow configuration. Use a Bosch flanged duct heater in this application.
Subject to change without prior notice.
fhp-mfg.com | 34
Blower Performance
ECM Constant Torque
External Static Pressure (in of Water)
Model
LM024
LM036
LM048
LM060
LM070
Motor Rated
Speed Airflow
Factory
Setting
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
1154
1117
1077
1034
988
938
886
830
-
-
-
-
1072
1018
966
915
866
818
772
727
-
-
-
-
976
920
867
815
766
719
674
631
-
-
-
-
906
844
785
730
678
630
585
544
-
-
-
-
5
950
4
825
3
725
2
650
1
500
829
750
676
610
551
498
451
412
-
-
-
-
5
1300
1506
1469
1430
1390
1347
1300
1249
1193
1130
1061
-
-
4
1100
1425
1326
1250
1190
1142
1100
1056
1005
942
860
-
-
3
950
1354
1233
1138
1063
1002
950
901
850
791
719
-
-
2
800
1294
1157
1041
946
866
800
744
696
653
611
-
-
1
750
1213
1084
976
886
812
750
698
653
612
573
5
1800
1950
1911
1880
1852
1826
1800
1770
1736
1695
1644
-
-
4
1600
1774
1737
1703
1669
1635
1599
1562
1520
1474
1422
-
-
3
1400
1565
1526
14931
1462
1432
1400
1363
1318
1265
1199
-
-
2
1300
1506
1468
1430
1389
1346
1300
1249
1192
1130
1061
-
-
1
1100
1425
1326
1250
1190
1142
1100
1056
1005
942
860
-
-
5
2200
2475
2402
2338
2283
2237
2199
2171
2152
2142
2141
2148
2165
4
2000
2169
2134
2099
2065
2032
2000
1968
1936
1906
1876
1847
1819
3
1800
1942
1914
1886
1857
1829
1799
1770
1740
1710
1679
1648
1617
2
1600
1766
1728.6
1693
1660
1629
1600
1573
1548
1525
1505
1486
1470
1
1400
1561
1520
1483
1451
1423
1399
1380
1366
1356
1350
1348
1351
5
2500
2723
2670
2622
2577
2537
2500
2466
2437
2411
2390
2372
2357
4
2350
2565
2528
2488
2445
2399
2349
2297
2242
2183
2122
2057
1989
3
2100
2255
2230
2202
2171
2137
2100
2060
2017
1971
1922
1870
1815
2
1850
2003
1975
1945
1914
1882
1850
1816
1781
1744
1707
1669
1629
1
1600
1765
1728
1693
1660
1629
1600
1573
1548
1525
1505
1486
1470
Full Load
Part Load/
Fan Only
Full Load
Part Load/
Fan Only
Full Load
Part Load/
Fan Only
Full Load
Part Load/
Fan Only
Full Load
Part Load/
Fan Only
Subject to change without prior notice.
35 | LM Model | Commercial Geothermal Heat Pumps
Blower Performance
ECM Constant CFM
External Static Pressure (in of Water)
Model
LM024
Part Load
LM024
Full Load
LM036
Part Load
LM036
Full Load
LM048
Part Load
LM048
Full Load
LM060
Part Load
LM060
Full Load
LM070
Part Load
LM070
Full Load
Motor
Speed
Rated
Airflow
Adjust
Tap
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
Low
725
+
A
725
725
725
725
725
725
725
725
-
-
Medium
650
Normal
A
650
650
650
650
650
650
650
650
-
-
High
500
-
A
500
500
500
500
500
500
500
500
-
-
Low
950
+
A
950
950
950
950
950
950
950
950
-
-
Medium
825
Normal
A
825
825
825
825
825
825
825
825
-
-
High
725
-
A
725
725
725
725
725
725
725
725
-
-
Low
950
+
A
950
950
950
950
950
950
950
950
950
950
Medium
800
Normal
A
800
800
800
800
800
800
800
800
800
800
High
750
-
A
750
750
750
750
750
750
750
750
750
750
Low
1300
+
A
1300
1300
1300
1300
1300
1300
1300
1300
1300
1300
Medium
1100
Normal
A
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
High
950
-
A
950
950
950
950
950
950
950
950
950
950
Low
1400
+
A
1400
1400
1400
1400
1400
1400
1400
1400
1400
1400
Medium
1300
Normal
A
1300
1300
1300
1300
1300
1300
1300
1300
1300
1300
High
1100
-
A
1100
1100
1100
1100
1100
1100
1100
1100
1100
1100
Low
1800
+
A
1800
1800
1800
1800
1800
1800
1800
1800
1800
1800
Medium
1600
Normal
A
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
High
1400
-
A
1400
1400
1400
1400
1400
1400
1400
1400
1400
1400
Low
1800
+
A
1800
1800
1800
1800
1800
1800
1800
1800
1800
1800
Medium
1600
Normal
A
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
High
1400
-
A
1400
1400
1400
1400
1400
1400
1400
1400
1400
1400
Low
2200
+
A
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
Medium
2000
Normal
A
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
High
1800
-
A
1800
1800
1800
1800
1800
1800
1800
1800
1800
1800
Low
2100
+
A
2100
2100
2100
2100
2100
2100
2100
2100
2100
2100
Medium
1850
Normal
A
1850
1850
1850
1850
1850
1850
1850
1850
1850
1850
High
1600
-
A
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
Low
2500
+
A
2500
2500
2500
2500
2500
2500
2500
2500
2500
2500
Medium
2350
Normal
A
2350
2350
2350
2350
2350
2350
2350
2350
2350
2350
High
2100
-
A
2100
2100
2100
2100
2100
2100
2100
2100
2100
2100
Subject to change without prior notice.
fhp-mfg.com | 36
Vertical Unit Dimensions
Vertical Top Discharge Water Source Heat Pump
Subject to change without prior notice.
37 | LM Model | Commercial Geothermal Heat Pumps
Vertical Unit Dimensions
LM024 – Vertical Top Discharge Water Source Heat Pump
Subject to change without prior notice.
fhp-mfg.com | 38
Vertical Unit Dimensions
LM036/048 – Vertical Top Discharge Water Source Heat Pump
Subject to change without prior notice.
39 | LM Model | Commercial Geothermal Heat Pumps
Vertical Unit Dimensions
LM060/070– Vertical Top Discharge Water Source Heat Pump
Subject to change without prior notice.
fhp-mfg.com | 40
Horizontal Unit Dimensions
Horizontal Water Source Heat Pump
Subject to change without prior notice.
41 | LM Model | Commercial Geothermal Heat Pumps
Horizontal Unit Dimensions
Horizontal Water Source Heat Pump
Subject to change without prior notice.
fhp-mfg.com | 42
Horizontal Unit Dimensions
Horizontal Water Source Heat Pump
Subject to change without prior notice.
43 | LM Model | Commercial Geothermal Heat Pumps
Horizontal Unit Dimensions
LM024 – Right Hand Horizontal Water Source Heat Pump
Subject to change without prior notice.
fhp-mfg.com | 44
Horizontal Unit Dimensions
LM024 – Left Hand Horizontal Water Source Heat Pump
Subject to change without prior notice.
45 | LM Model | Commercial Geothermal Heat Pumps
Horizontal Unit Dimensions
LM036/048 – Right Hand Horizontal Water Source Heat Pump
Subject to change without prior notice.
fhp-mfg.com | 46
Horizontal Unit Dimensions
LM036/048 – Left Hand Horizontal Water Source Heat Pump
Subject to change without prior notice.
fhp-mfg.com | 48
LM060/070 – Left Hand Horizontal Water Source Heat Pump
Subject to change without prior notice.
49 | LM Model | Commercial Geothermal Heat Pumps
Specification Guide
1.0 General
Furnish and install LM series water source heat
pumps as indicated on the plans with capacities
and characteristics as listed in the schedule and
the specifications that follow. The units shall be
manufactured in an ISO 9001:2000 certified facility.
2.0 Horizontal/Vertical Water Source
Heat Pumps
Units shall be designed to operate throughout the
range of entering fluid temperature of 40°F to 120°F
in the cooling mode and 20°F to 90°F in the heating
mode. Equivalent units from other manufacturers
can be proposed provided approval to bid is given 10
days prior to bid closing. All equipment with a
nominal capacity of 134,000 BTUH Total Cooling or
lower must be listed in the current AHRI Applied
Equipment Directory under the AHRI Standard
ARIISO- 13256-1, WLHP, GWHP and GLHP Rating. All
equipment in this section must meet or exceed the
national standard minimum EER and COP as listed in
ASHRAE 90.1 All units shall conform to UL1995
standard and certified to CAN/CSA C22.1 No 236 by
Intertek-ETL.
All units shall have ARI-13256-1 labels, and ETL/UL or
NRTL or CSA labels.
2.01 Basic Construction
A. Units shall have the air flow arrangement
as shown on the plans. If units with these
arrangements are not used, the contractor
supplying the water source heat pumps is
responsible for any extra costs incurred by other
trades and must submit detailed mechanical
drawings showing ductwork requirements and
changes or relocation of any other mechanical
or electrical system. If other arrangements make
servicing difficult the contractor must provide
access panels and clear routes to ease service.
The architect must approve all changes 10 days
prior to bid.
B. All units shall have stainless steel drain pans to
comply with this project’s IAQ requirements. No
exceptions shall be allowed.
Subject to change without prior notice.
C. All water source heat pumps shall be fabricated
from sheet metal finished with G90 galvanized
steel. All interior surfaces shall be lined with 1/2
inch thick, multi density acoustic insulation. All
insulation must meet NFPA 90A and be certified
to meet the GREENGUARD Indoor Air Quality
Standard for Low Emitting Products. One blower
access panel and two compressor compartment
access panels shall be removable with supply
and return air ductwork in place.
Option to C: All interior surfaces shall be lined
with ½" thick closed cell foam insulation
D. Unit shall have a floating base pan consisting
of a ½" (12 mm) thick high density rubber pad
between the compressor base plate and the unit
base pan to prevent transmission of vibration to
the structure.
E. All units shall have a factory installed four sided
filter rack capable of accepting either one or
two inch filters. Units shall have a 1 inch thick
throwaway type glass fiber filter as standard. The
filter rack shall incorporate a 1 inch duct flange.
The contractor shall purchase one spare set of
filters and replace factory-shipped filters upon
completion of start-up.
Option to E: All units shall have a factory
installed four sided filter rack with 2"
MERV8 filters.
Option to E: All units shall have a factory
installed four sided filter rack with 2"
MERV13 filters.
F. Cabinets shall have separate holes and
knockouts for entrance of line voltage and
low voltage control wiring. Supply and return
water connections shall be brass FPT fittings
and shall be securely mounted flush to the
cabinet allowing for connection to a flexible
hose without the use of a back-up wrench.
Water connections which protrude through the
cabinet shall not be allowed.
G. Hanging brackets shall be provided as standard
for horizontal units
H. All units shall have condensate overflow
switch, Air-Coil and Water-Coil Freeze sensor
as standard.
fhp-mfg.com | 50
Specification Guide
2.02 Fan and Motor Assembly
A. Units shall have a direct-drive centrifugal
fan. The fan motor shall be a factory preprogrammed high efficiency constant torque
ECM type.
The fan motor shall be isolated from the fan
housing by torsionally flexible isolation.
Option for A: The fan motor shall be a preprogrammed high efficient constant CFM
ECM type
B. The fan and motor assembly must be capable
of overcoming the external static pressures
as shown on the schedule. External static
pressure rating of the unit shall be based on a
wet coil. Ratings based on a dry coil shall NOT
be acceptable.
C. All units shall have removable blower inlet
ring as standard for ease of service and
maintenance.
2.03 Refrigerant Circuit
Units shall use R-410A refrigerant. All units shall have
a factory sealed and fully charged refrigerant circuit
with the following components:
A. Two stage hermetic compressor specifically
designed for heat pump operation and shall
be internally protected) with thermal overload
protection and mounted on rubber vibration
isolators.
B. Bi directional refrigerant metering thermal
expansion valves
C. Finned tube refrigerant to air heat exchanger
not exceeding 14 fins per inch. Refrigerant
to air heat exchangers shall utilize enhanced
aluminum fins and rifled copper tube
construction rated to withstand 600 PSIG
refrigerant working pressure. All air coils shall
have non-ferrous aluminum end plates.
Option for C Coils shall have Duo-Guard
coating for enhanced protection against
formicary and other corrosion. Copper tubes
shall be tin coated and aluminum fins coated
to pass 1000 hour ASTM B117 salt fog testing.
which shall fail to the heating operation
should the solenoid fail to function. Reversing
valves which fail to the cooling operation
shall not be allowed.
E. Coaxial (tube in tube) refrigerant to water
heat exchanger. Refrigerant to water heat
exchangers shall be insulated and with copper
inner water tube and steel outer refrigerant
tube design rated to withstand 600 PSIG
working refrigerant pressure and 400 PSIG
working water pressure. Shell and Tube style
refrigerant to water heat exchangers shall be
treated as pressure vessels and shall require
refrigerant pressure relief valves piped to
the exterior of the building. The contractor
supplying the water source heat pumps with
Shell and Tube heat exchangers shall be
responsible for any additional installation
costs. Brazed Plate water to refrigerant heat
exchangers shall require additional centrifugal
separators added to the supply water piping
at each unit. Each separator shall have an
automated clean out valve piped to a waste
line. The contractor supplying water source
heat pumps with Brazed Plate heat exchangers
shall be responsible for any additional costs.
Option for E: Cupro-Nickel water coil –
The refrigerant to water heat exchanger
shall be of cupro-nickel inner water tube
construction.
F. Safety controls including both a high pressure
and low pressure switch. Temperature sensors
shall not replace these safety switches. See
the controls section of this specification for
additional information.
G. Access fittings shall be factory installed on
high and low pressure refrigerant lines to
facilitate field service.
H. Activation of any safety device shall prevent
compressor operation via a lockout circuit. The
lockout circuit shall be reset at the thermostat
or at the contractor supplied disconnect
switch. Units which may be reset at the
disconnect switch only shall not be acceptable.
Refer to solid state safety circuit below.
D. Reversing valve. Reversing valves shall be
four way solenoid activated refrigerant valves
Subject to change without prior notice.
51 | LM Model | Commercial Geothermal Heat Pumps
Specification Guide
2.04 Electrical
A control box shall be located within the unit
and shall contain a transformer, controls for the
compressor, reversing valve and fan motor operation
and shall have a terminal block for low voltage
field wiring connections. The transformer shall be
rated for a minimum 75 VA. All units shall be nameplated for use with time delay fuses or HACR circuit
breakers. Unit controls shall be 24 volts.
2.05 Solid-State Safety Circuit
All units shall have a solid-state UPM safety control
circuit with the following features:
1. Anti-short cycle time delay on compressor
operation.
2. Random start on power up mode.
3. Brown out/Surge/Power Interruption
protection.
4. Low Pressure Switch 120 second bypass timer.
5. Shutdown on the following fault indications:
a. high or low refrigerant pressure safety
switches inputs.
b. Freeze sensors shall monitor refrigerant
temperature to the water coil in the
heating mode and refrigerant coil in the
cooling mode.
c. condensate senor input.
6. Alarm output which closes for selectable
dry contact closure or 24 VAC remote fault
indication.
7. Alarm output selectable for constant output
for general alarm notification, or pulse output
for annunciation of the specific fault alarm
8. Selectable reset of unit at thermostat
or disconnect.
9. Automatic intelligent reset. Unit shall
automatically reset after a safety shut down
Subject to change without prior notice.
and restart the unit after the anti-short cycle
timer and random start timer expire. Should
a fault re-occur within 60 minutes after reset,
then a permanent lockout will occur. Reset
attempts shall be selectable for either 2 or
4 tries. A condensate overflow will place the
unit in an immediate hard lockout.
10. Ability to defeat time delays for servicing.
11. A light emitting diode (LED) to indicate
safety alarms. The LED shall annunciate the
following alarms:
a. high refrigerant pressure,
b. low refrigerant pressure,
c. low refrigerant temperature to the water
coil in the heating operation,
d. high level of condensate in the drain pan,
e. brown out/surge/ power interruption.
12. The LED will display each fault condition
as soon as the fault occurs. If a permanent
lockout occurs, then the fault LED will display
the type of fault until the unit is reset.
13. UL listed, CUL listed, and RFI, ESD, and
transient protected.
Freeze Protection: A freeze stat shall sense the
entering refrigerant temperature to the coaxial
coil (in the heating mode) and shall activate the
compressor lockout circuit when the refrigerant
temperature drops below either 15⁰F or 30⁰F. The
factory default is 30⁰F and the temperature setting
may be set at 15⁰F by cutting the resistor (R42)
located above dip switch The freeze stat may not
provide protection in the case of loss of flow in the
heating mode. A flow switch or pressure differential
switch is recommended to prevent unit operation
in case of loss of flow. A second freeze sensor shall
be mounted at the refrigerant inlet to the air coil.
Should the refrigerant temperature drop below
30⁰F the unit will go into a soft lockout.
fhp-mfg.com | 52
Specification Guide
2.06 Options
A. Extra quiet construction: Optional compressor
blanket shall be provided on units having a
capacity above 24,000 BTUH.
B. Hot Gas Reheat: Units as noted on the
schedule shall be equipped with optional Hot
Gas Reheat (HGRH).
On/Off HGRH shall be controlled by a
humidistat connected to the unit H terminal
and shall start the unit in the reheat mode
should the humidity be above set point once
the thermostat control is satisfied. Cooling
or heating requirements shall take precedent
over HGRH.
C. Water Differential Switch. A water differential
switch shall be factory piped between the
fluid inlet and outlet piping to prevent unit
operation if there is no fluid flow.
D. DDC Controls: Unit shall be equipped with
a factory installed DDC control capable
of interfacing with BACnet, Modbus, N2
and Lonworks. The controller shall be preprogrammed to control the unit and monitor
the safety controls. The unit shall be able to
operate as a standalone or be incorporated
into a building management system. A leaving
water and leaving air sensor shall be installed
in the unit. Wall sensors shall be available for
controlling zone temperature.
E. Unit mounted disconnect. A non fused
factory mounted disconnect shall be installed
on the unit.
F. Two Way Motorized Water valve: A two way
motorized water valve shall be mounted in
the interior of the unit. The valve shall cycle
open whenever there is a call for compressor
operation. The valve shall be equipped with an
end switch.
G. Internal Load Match Pump: An internal load
match pump shall be installed in the unit. 208230 volt units only
H. Conversion Kit for horizontal discharge
configuration shall be available should the
discharge arrangement need to be field
changed.
I. Electric Heat: Factory installed UL listed
electric heater packages shall be available for
the units. Available only on vertical units with
top discharge and horizontal units with end
blow configuration.
J. The following relays shall be factory installed
in the unit
a)EMS Relay for remote enabling of the
unit.
b)Auxiliary pump relay to enable a pump
operation when calling for compressor
operation.
c)Compressor monitoring relay – provides a
contact closure whenever the compressor
contactor is energized
L. Soft Start shall be installed to limit inrush
current on startup. 208/230 V units only.
M. Phase Loss and reversal protection shall be
provided on the unit to protect the compressor
from operating in reverse rotation.
N. A Comfort alert module shall be installed in the
units to assist in service diagnostics.
3.0 Hose Kits
All units shall be connected by hoses and have
a maximum working pressure 400 PSI for sizes
½" – 1" and 300 PSI for sizes 1 ¼ – 2". The
hoses shall be either 2 or 3 feet long, with steel
constructed fittings and assembly as “fire rated”
tested according to UL 94 with a VO rating of
ASTM 84. Non-fire rated hoses are not acceptable.
Optional ball valves with P/T ports, flow controller,
Y strainer and electric valve shall be in included as
specified in the schedule.
Subject to change without prior notice.
53 | LM Model | Commercial Geothermal Heat Pumps
Notes
Subject to change without prior notice.
fhp-mfg.com | 54
Notes
Subject to change without prior notice.
Bosch Thermotechnology Corp.
601 N.W. 65th Court, Fort Lauderdale, FL 33309
Phone: 954-776-5471 | Fax: 954-776-5529
fhp-mfg.com
BTC 760404301 A 1.2014
TM
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