—The standard motor for all SV series heat pumps is a
permanent split capacitor (PSC) motor.
Hanging Brackets
—All horizontal units come standard with hanging
bracket kits for suspending the unit from field
supplied hanger rods
Water Connections
—All water connections are heavy duty bronze FPT
fittings securely fastened to the unit corner post
Refrigerant Circuit
—SV Series units are designed using the optimum
combination of compressor, water and copper
aluminum-fin evaporator coils with capillary tubes
to provide peak performance.
Bosch Thermotechnology Corp.
Londonderry, NH • Ft. Lauderdale, FL
i Series Model SV
Water Source Heat Pump ½ to 6 Ton
Standard Features, Factory Installed Options, and Field Installed Accessories continued..
Engineering Submittal Sheet
Copper Coax Coil
75 VA Transformer
Standard Range (WLS / Towers / Boiler)
Unit Protection Module
—Each SV unit is factory provided with a Unit Protection
Module (UPM) that controls the unit operation and
monitors the safety controls that protect the unit
—The UPM interfaces with the thermostat or direct digital
controller
—Water and Air coil freeze protection
—Condensate Overflow Sensor
—Brown-out Protection
—Low and High Pressure Protection
Factory and Field Installed Options
ECM Constant Torque
—The constant-torque blower motor option offers
improved effi ciency (up to 33%) over the standard PSC
motor
ECM Constant CFM (Variable Speed)
—The new high efficiency ECM motor option, available in
1/3hp to 1hp, provides constant airflow in a wide static
pressure range up to 1 in.w.g.
—Improved efficiency up to 33% over the standard PSC
motor
Optional 2"MERV 8 and MERV 13 Filter
—The MERV 8 and MERV 13 filter is a cost effective
way of upgrading air quality while maintaining low
pressure drop and sustaining long service life
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.
Compressor Sound Blanket
—Quiets compressor sound
Smart Start (Coming Soon)
—Factory or Field installed
—Ease in starting
—Increased start-up efficiency
—Helps reduce light dimming
Cupro-nickel Coil:
—Recommended in conditions anticipating moderate
scale formation or in brackish water
Pump Interlock Relay
—Helps ensure the external flow/pump center operates
when unit is operating
Extended Range Option
Duo-Guard™ Evaporator Coil
—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
Closed Cell Foam Insulation (Coming Soon)
—Sound levels as low as 52 Db
EMS Relay
—Energy management relay to tie into a building's energy
All blower motors are single phase.
UNIT POWER SUPPLY: A voltage variation of +/- 10% of nameplate rating is acceptable. Phase imbalance shall not exceed 2%.
8 of 40
Bosch Thermotechnology Corp. reserves the right to make changes without notice due
to continuing engineering and technological advances |
AHRI/ISO13256-1 certified per formance 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.
The results reported herein are estimates based on testing by FHP. Variations in the
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance 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.
The results reported herein are estimates based on testing by FHP. Variations in the
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance is rated at entering air conditions of 80.6°F
Tabulated unit performance does not include fan or pump power corrections required
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection
Ratings below 40°F are with a methanol solution.
The results reported herein are estimates based on testing by FHP. Variations in the
Continuous research and development to improve our products may result in a change
Entering Air
Temp (F)
(F)
30
*
40
*
50
60
70
80
DB and 66.2°F WB in cooling and 68°F DB in heating.
for AHRI/ISO standard performance ratings.
software.
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance 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.
The results reported herein are estimates based on testing by FHP. Variations in the
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance 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.
The results reported herein are estimates based on testing by FHP. Variations in the
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance 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.
The results reported herein are estimates based on testing by FHP. Variations in the
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance 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.
The results reported herein are estimates based on testing by FHP. Variations in the
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance 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.
The results reported herein are estimates based on testing by FHP. Variations in the
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance 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.
The results reported herein are estimates based on testing by FHP. Variations in the
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance 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.
The results reported herein are estimates based on testing by FHP. Variations in the
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance 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.
The results reported herein are estimates based on testing by FHP. Variations in the
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance is rated at entering air conditions of 80.6°F
DB and 66.2°F WB in cooling and 68°F DB in heating.
AHRI/ISO13256-1 certified performance is rated at entering air conditions
Tabulated unit performance does not include fan or pump power corrections required
for AHRI/ISO standard performance ratings.
Tabulated unit performance does not include fan or pump power
Unit performance may be interpolated. Extrapolation is not allowed.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection
software.
For conditions other than rating conditions provided, consult the FHP BST
Ratings below 40°F are with a methanol solution.
The results reported herein are estimates based on testing by FHP. Variations in the
Ratings below 40°F are with a methanol solution.
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
Due to variations in installation, actual performance may vary from the
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
Entering Air
Temp (F)
6045.230.83.983.3
6049.735.94.13.6
6057.441.84.234
6064.248.24.374.3
6072.754.24.544.7
6079.261.94.734.9
Extended Range - Anti-freeze required
of 80.6°F DB and 66.2°F WB in cooling and 68°F DB in heating.
corrections required for AHRI/ISO standard performance ratings.
selection software.
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.
in a change to the current design and specifications without notice.
AHRI/ISO13256-1 certified per formance is rated at entering air conditions of 80.6°F
DB and 66.2°F WB in cooling and 68°F DB in heating.
AHRI/ISO13256-1 certified performance is rated at entering air conditions
Tabulated unit performance does not include fan or pump power corrections required
for AHRI/ISO standard performance ratings.
Tabulated unit performance does not include fan or pump power
Unit performance may be interpolated. Extrapolation is not allowed.
Unit performance may be interpolated. Extrapolation is not allowed.
For conditions other than rating conditions provided, consult the FHP BST selection
software.
For conditions other than rating conditions provided, consult the FHP BST
Ratings below 40°F are with a methanol solution.
The results reported herein are estimates based on testing by FHP. Variations in the
Ratings below 40°F are with a methanol solution.
installation and operational environment may alter performance. Bosch disclaims all
warranties, express and implied, that the performance will be as reported, including
Due to variations in installation, actual performance may vary from the
the warranty of merchantability and fitness for purpose. In addition, continuous
research and development may result in a change to an appliances design and
specifications, which Bosch may change without notice. Before purchase, confirm the
design specifications of the appliance.
Continuous research and development to improve our products may result
Continuous research and development to improve our products may result in a change
to the current design and specifications without notice.
Entering Air
Temp (F)
6049.435.14.193.5
6055.7414.33.8
6062.647.74.44.2
6071.154.54.534.6
6079.362.24.675
6087.970.24.845.3
Extended Range - Anti-freeze required
of 80.6°F DB and 66.2°F WB in cooling and 68°F DB in heating.
corrections required for AHRI/ISO standard performance ratings.
selection software.
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.
in a change to the current design and specifications without notice.
Furnish and install BOSCH SV series water source heat pumps as
indicated on the plans with capacities and characteristics as listed
in the schedule and the specifi cations that follow. The units shall be
manufactured in an ISO 9001:2000 certifi ed facility.
2.0 Horizontal/Vertical/CounterFlow Water Source Heat Pumps
Units shall be designed to operate throughout the range of entering
fl uid temperature of 50°F to 100°F in the cooling mode and 50°F
to 80°F in the heating mode. Units shall have an operating range of
entering fl uid temperature between 40°F and 120°F in cooling and
between 20°F to 90°F in the heating mode when equipped with
the optional extended range package. 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
ISO- 13256-1 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 certifi ed 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 fl ow 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 duct work
requirements and changes or relocation of any other mechanical or electrical system. If other arrangements make servicing
diffi cult 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.
C. All water source heat pumps shall be fabricated from sheet
metal fi nished 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 certifi ed
to meet the GREENGUARD Indoor Air Quality Standard for
Low Emitting Products. One blower access panel and one
compressor compartment access panels shall be removable
with supply and return air duct work in place.
37 of 40
Bosch Thermotechnology Corp. reserves the right to make changes without notice due
to continuing engineering and technological advances |
D. Unit shall have a fl oating 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 two sided fi lter rack
capable of accepting one inch fi lters. Units shall have a 1 inch
thick throwaway type glass fi ber fi lter as standard. The fi lter rack
shall incorporate a 1 inch duct fl ange. The contractor shall pur-
chase one spare set of fi lters and replace factory-shipped fi lters
upon completion of start-up.
—Option to E: All units shall have a factory installed four
sided filter rack with 2” MERV7 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 fi ttings and
shall be securely mounted fl ush to the cabinet allowing for
connection to a fl exible 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 overfl ow switch , Air-coil and
water-coil freeze sensor as standard.
2.02 Fan and Motor Assembly
A. Units shall have a direct-drive centrifugal fan. The fan motor
shall be a high effi ciency PSC type.
The fan motor shall be isolated from the fan housing by
torsionally fl exible isolation.
—Option for A: The fan motor shall be a pre-programmed
high efficiency constant CFM ECM type
—Option for A: The fan motor shall be a pre-programmed
high efficiency constant torque 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. Compressors shall be hermetic single stage rotary,
reciprocating or scroll type specifi cally designed for heat
pump operation and shall be internally sprung, externally
isolated (rotary), with thermal overload protection and
mounted on rubber vibration isolators.
B. Refrigerant metering capillary tubes.
—Option for B Units shall be equipped with the
extended range package for low fluid temperature
in the heating mode. The extended range package
shall incorporate bi-directional refrigerant metering
thermal expansion valves and an option insulated
coaxial water coil for extended arrange application.
C. Finned tube refrigerant to air heat exchanger not exceeding
14 16 fi
ns per inch. Refrigerant to air heat exchangers shall
utilize enhanced aluminum fi ns and rifl ed 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 tin electro-
plated copper tubing with polymer coated Aluminum
Fins coating for enhanced protection against
formicary and other types of corrosion. Copper tubes
shall be tin coated and aluminum fins coated to pass
1000 hour ASTM B117 salt fog testing.
D. Reversing valve. Reversing valves shall be four way solenoid
activated refrigerant valves 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 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
38 of 40
Bosch Thermotechnology Corp. reserves the right to make changes without notice due
to continuing engineering and technological advances |
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 specifi cation for
additional information.
G. Access fi ttings shall be factory installed on high and low
pressure refrigerant lines to facilitate fi eld 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.
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 fi eld
wiring connections. The transformer shall be rated for a minimum
75 VA and shall have a push button reset circuit breaker on the
secondary power.
All units shall be name-plated 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 to air coil
in the cooling mode.
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
notifi cation, or pulse output for annunciation of the specifi c fault
alarm.
8. Selectable reset of unit at thermostat or disconnect.
9. Automatic intelligent reset. Unit shall automatically reset
after a safety shut down and restart the unit after the antishort cycle timer and random start timer expire. Should
the same 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 overfl ow 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. Low refrigerant temperature to the air coil in the cooling
mode,
e. high level of condensate in the drain pan,
f. 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 26⁰F. The
factory default is 26⁰F 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 fl ow
in the heating mode. A fl ow switch or pressure differential switch
is recommended to prevent unit operation in case of loss of fl ow.
A second freeze sensor shall be mounted at the refrigerant inlet
to the air coil. Should the refrigerant temperature drop below
26⁰F the unit will go into a soft lockout.
Condensate overfl ow protection: A condensate sensor shall
activate the lockout circuit upon sensing a high level of
condensate in the drain pan and immediately put the unit into a
hard lockout. COP shall be standard on horizontal units
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
39 of 40
Bosch Thermotechnology Corp. reserves the right to make changes without notice due
to continuing engineering and technological advances |
unit H terminal and shall start the unit in the reheat mode should
the humidity be above set point once the thermostat control is
satisfi ed. Cooling or heating requirements shall take precedent
over HGRH.
C. DDC Controls: Unit shall be equipped with a factory installed
DDC control capable of interfacing with BacNet, Modbus, and
N2 and Lonworks. When choosing Lonworks, a separate Lon card
must be purchased. The controller shall be pre-programmed
to control the unit and monitor the safety controls. The unit
shall be able to operate as a standalone or be incorporated into
the 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.
D. 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. The following relays shall be factory installed in the unit
a) EMS Relay for remote enabling of the unit.
b) Auxiliary pump or valve relay to enable a pump or valve
operation when calling for compressor operation.
H. A Comfort Alert Module can be ordered separately for Scroll
compressors. This device assist in service diagnostics. shall be
installed in the units to assist in service diagnostics.
Engineering Submittal Sheet
3.0 Hose Kits
All units shall be connected with hoses. The hoses shall be either
2 or 3 feet long, braided stainless steel, fi re rated hoses. Non fi re
rated hoses are not acceptable. Optional ball valves with P/T ports,
fl ow controller, Y strainer and electric valve shall be in included as
specifi ed in the schedule.
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Bosch Thermotechnology Corp. reserves the right to make changes without notice due
to continuing engineering and technological advances |