Download Data Sheet Explanation

Data Sheet Explanation
When filling out the AABC data sheets, it is important to correctly fill in the
various data blocks, or cells, so that others reading the report will be able to
properly interpret the information. In order to achieve this, the data sheets should
be filled out the same way with the same type of information every time. It is also
important that the data sheets be arranged in a standard order.
These instructions will explain the type of data that is to be entered in each cell
on each data sheet. When filling in the data the manuscript should be neat and
legible.
Common Fields
Every data sheet has several common fields. While they may seem selfexplanatory, a few comments are in order.
Date
The date when the report is issued.
Page _ of _
Appropriate page numbers should be assigned to each data
sheet when the agenda is prepared. While it is appreciated
that findings in the field may cause some pages to be
reassigned, putting the pages in a preliminary order reduces
confusion and makes keeping track of the various parts of
the report much easier. This is especially helpful if more than
one technician works on a job.
Project Name
The name assigned to the project by the supervisor or office.
System
The air or water system for which data is entered on a given
sheet. On data sheets that contain information for more than
one system, all appropriate system designations should be
entered. System designations will usually be assigned by the
design engineer. If no such designations exist, or there are
duplicate designations, the person preparing the agenda will
assign them.
Remarks
At the bottom of each data sheet are several lines for
remarks. The exact nature of these remarks varies by TAB
firm, but generally explanations for discrepancies or
procedures go here.
Individual Data Sheets
The individual data sheet explanations will be presented in the order in which the
TAB report should be assembled. A summary of the data sheets intent will be
given and the cell headings will be listed on the left along with an explanation of
type of information to be entered.
Instrument List
The TAB supervisor will prepare a list of the instruments that they expect will be
necessary for the job. Once the field phase of the project begins, any additional
tools or instrumentation should be entered on this sheet.
Instrument
A specific TAB instrument or piece of equipment. Examples
would be pitot tubes, anemometers, amp probes,
balometers, tachometers, temperature probes, etc.
Manufacturer
The manufacturer of the specific instrument.
Model
The model number of the instrument.
Serial Number
The serial number of the instrument.
Calibration Date
Most test equipment must be calibrated on a regular basis
and this information will be on a sticker applied by the testing
firm. Enter the date of the most recent calibration here.
Some devices, such as pitot tubes, have no moving parts
and this space does not apply for them.
Air Moving Data
This sheet is generally used for all air moving equipment except for exhaust and
ventilation fans. Note that not all data will be required or available for every unit.
The AABC data sheet has space for two pieces of equipment. Note that for air
moving equipment containing two fans in one unit, such as a unit equipped with a
supply and return fan, each fan should be entered individually. In those instances
the System field at the top of the sheet will have only the name of the complete
unit, indicating that this is one unit with two fans.
Some TAB firms use this sheet to show performance data for the same unit
under two different conditions, such as performance at minimum and maximum
outside air setting. In those instances the common data should be filled in for
both conditions. Each TAB firm will establish their own methods of differentiating
between the two conditions.
Fan
The name of the fan. If the unit has one fan, this will be the
same as the system name. If the unit has multiple fans, the
naming convention outlined above will be used.
For example, if System AHU-1 has one fan, then AHU-1 will
be entered in the Fan field. If System AHU-1 has both a
supply and return fan, then one might enter SF-1 in one cell
and RF-1 in the adjacent cell.
Equipment
Location
Area Served
Equipment
Manufacturer
The physical location of the equipment. If the equipment is
located in a room, the room number or other uniquely
descriptive designation should be used.
The general area served by the ductwork associated with a
given unit. Examples might be ‘2nd Floor’, ‘West Side’, etc.
The mfg. of the equipment. This can be found in the
submittal data or on the unit.
Model
The manufacturer’s model number. This can be found on the
submittal information or on the manufacturer’s data plate on
the unit.
Serial Number
The manufacturer’s unique unit serial number. This is usually
found on the unit data plate.
The following fields have provisions for two sets of data, Specified and Actual.
Specified
The design data for the unit. This information is usually
found in the submittal data or on the unit data plate.
Actual
Field-measured data for the unit.
Total CFM – Fan
The total supply airflow volume in Cubic Feet per Minute for
the unit.
Total CFM – Outlet The supply airflow volume in Cubic Feet per Minute at the
supply grilles.
R/A CFM
The total Return Air airflow volume in Cubic Feet per Minute.
O/A CFM
Total/External
Static Pressure
The total Outside Air airflow volume in Cubic Feet per
Minute.
Total static pressure is taken across the fan and External
static pressure is taken across the unit. Static pressure is
measured in inches water gauge and is written n in. w.g. or
n“. Usually only one measurement or the other will be
required.
Inlet Pressure
The static pressure at the unit intake.
Discharge
Pressure
The static pressure at the unit discharge.
Fan RPM
Motor
Manufacturer
The RPM (Revolutions Per Minute) of the fan rounded to the
nearest whole number.
The manufacturer of the fan motor.
Motor HP/BHP
Motor horsepower is usually given on the motor data plate.
Brake horsepower is usually a calculated quantity but may
be given in the manufacturer’s submittal data.
Phase/Hz
The motor electrical phase, either 1 or 3, and the Hertz,
usually 50 or 60.
Voltage
The operating voltage of the supplied power. It is not
uncommon for a motor to be capable of operation with
multiple voltages. The correct voltage is either given in the
submittal data or field verified.
Amperage
The operating amp draw of the motor. On the data plate this
is usually shown as FLA for Full Load Amps. Note that the
FLA of a motor will vary depending on what voltage it is
wired for.
Motor Service
Factor/Frame #
Starter Location/
The motor Service Factor is usually shown on the motor data
plate and abbreviated SF. The Frame # is also on the motor
data plate.
Size
O.L. Heater Size/
Rating
Motor Sheave
& Shaft
Fan Sheave
& Shaft
Applicable to units equipped with motor starters. The motor
starter’s physical location is put here. The size of the motor
starter is usually located on the starter.
The Overload Heater is located with the motor starter. The
size and rating are located on the heater.
The motor sheave is identified by the manufacturer’s model
number, usually located on the sheave itself. The shaft size
is measured to the nearest 1/16 of an inch. The format is
motor sheave model number x shaft size.
This information is entered in exactly the same way as that
for the motor sheave & shaft.
Belt Size/Number The Belt Size is usually printed on the belt. The Number is
the number of belts on the drive.
Sheave
Adjustment
C to C/
Motor Mount
Adjustment
This is given in the number of turns from the closed position.
If the two sheave halves are touching, then the sheave is
said to be ‘0 Turns Open’. A sheave in which the two halves
are as far apart as possible is said to be ‘4 (or whatever the
maximum number of turns is) Turns Open. A manufacturer’s
catalog will give the total number of turns available for a
given sheave.
C to C is the center-to-center distance between the motor
and fan shafts. The measurement is taken from the center of
one shaft to the center of the other.
The Motor Mount Adjustment is given in the distance that
the center of one shaft, usually the motor, can move In or
Out in relation to the other.
Static Pressure Profile
This form is where the static pressure test points for a given piece of equipment
is recorded. There is a representative drawing of a piece of air moving equipment
at the top of the sheet. Test points are marked with letters and the spaces
between the letters represent components such as coils, filters, etc.
The sheet is designed so that multiple units can be recorded on the same form.
While this reduces the number of data sheets required for a given job, this form
works best when all of the units on the same sheet share common components.
Write the names of the various components in the blocks between the lettered
test points. Not all blocks may be filled, depending on the configuration of the
unit. The unit names are recorded in the far left cells on the table. The static
pressure value for each test point is then placed in the appropriate letter column
and unit row. Note that the letters ‘a’ and ‘j’ correspond to the Inlet Pressure and
Discharge Pressure cells on the Air Moving Equipment Data sheet.
Fan Data
Exhaust and ventilation fan information are usually recorded on this data sheet.
Fan
The name of the fan. If the unit has one fan, this will be the
same as the system name. If the unit has multiple fans, the
naming convention outlined above will be used.
For example, if System AHU-1 has one fan, then AHU-1 will
be entered in the Fan field. If System AHU-1 has both a
supply and return fan, then one might enter SF-1 in one cell
and RF-1 in the adjacent cell.
Equipment
Location
Area Served
Equipment
Manufacturer
Model
The physical location of the equipment. If the equipment is
located in a room, the room number or other uniquely
descriptive designation should be used.
The general area served by a given unit. Examples might be
‘2nd Floor’, ‘West Side’, etc.
The mfg. of the equipment. This is found in the submittal
data or on the unit housing.
The manufacturer’s model number. This can be found on the
submittal information or on the manufacturer’s data plate on
the unit.
Serial Number
The manufacturer’s unique unit serial number. This is usually
found on the unit data plate.
The following fields have provisions for two sets of data, Specified and Actual.
Specified
The design data for the unit. This information is usually
found in the submittal data or on the unit data plate.
Actual
Field-measured data for the unit.
Total CFM – Fan
The total airflow volume for the unit in Cubic Feet per
Minute.
Total CFM –
Air Distribution
Total/External
Static Pressure
The total airflow volume in Cubic Feet per Minute at the
distribution terminals associated with the unit. For fans
without ductwork this will be the same as the Total CFM –
Fan cell.
Total static pressure is taken across the fan and External
static pressure is taken across the unit. Static pressure is
measured in inches water gauge and is written n in. w.g. or
n“. Usually only one measurement or the other will be
required.
Inlet Pressure
The static pressure at the unit intake.
Discharge
Pressure
The static pressure at the unit discharge.
Fan RPM
Motor
Manufacturer
The RPM (Revolutions Per Minute) of the fan rounded to the
nearest whole number.
The manufacturer of a given fan motor.
Motor HP/BHP
Motor horsepower is usually given on the motor data plate.
Brake horsepower is usually a calculated quantity but may
be given in the manufacturer’s submittal data.
Phase/Hz
The motor electrical phase, either 1 or 3, and the Hertz,
usually 50 or 60.
Voltage
The operating voltage of the supplied power. It is not
uncommon for a motor to be capable of operation with
multiple voltages. The correct voltage is either given in the
submittal data or field verified.
Amperage
Motor Service
Factor/Frame #
Starter Location/
Size
O.L. Heater Size/
Rating
Motor Sheave
& Shaft
Fan Sheave
& Shaft
The operating amp draw of the motor. On the data plate this
is usually shown as FLA for Full Load Amps. Note that the
FLA of a motor will vary depending on what voltage it is
wired for.
The motor Service Factor is usually shown on the motor data
plate and abbreviated SF. The Frame # is also on the motor
data plate.
Applicable to units equipped with motor starters. The motor
starter’s physical location is put here. The size of the motor
starter is usually located on the starter.
The Overload Heater is located with the motor starter. The
size and rating are located on the heater.
The motor sheave is identified by the manufacturer’s model
number, usually located on the sheave itself. The shaft size
is measured to the nearest 1/16 of an inch. The format is
motor sheave model number x shaft size.
This information is entered in exactly the same way as that
for the motor sheave & shaft.
Belt Size/Number The Belt Size is usually printed on the belt. The Number is
the number of belts on the drive.
Sheave
Adjustment
C to C/
Motor Mount
This is given in the number of turns from the closed position.
If the two sheave halves are touching, then the sheave is
said to be ‘0 Turns Open’. A sheave in which the two halves
are as far apart as possible is said to be ‘4 (or whatever the
maximum number of turns is) Turns Open. A manufacturer’s
catalog will give the total number of turns available for a
given sheave.
Adjustment
C to C is the center-to-center distance between the motor
and fan shafts. The measurement is taken from the center of
one shaft to the center of the other.
The Motor Mount Adjustment is given in the distance that
the center of one shaft, usually the motor, can move In or
Out in relation to the other.
Duct Traverse Data
This is where data for duct traverses are recorded. This data sheet has two
unique fields at the top of the sheet, Area Served and Traverse Location.
Area Served
Traverse
Location
This is the same type of information recorded on the Air
Moving Equipment Data sheet for this cell. In this case the
area served is the area downstream of the traverse location.
The physical location of the traverse. This should be a room
number or some other uniquely identifiable location.
The Duct Traverse Data sheet contains a table on which each reading of the
traverse is recorded. After the traverse points have been determined for a given
duct, the corresponding readings are entered into the table at the appropriate
spot. Readings are recorded in FPM. The Total row at the bottom of the table is
the sum of each of the columns.
At the bottom of the table is the formula for determining the CFM of the duct with
spaces to fill in the required information.
Total FPM
The sum of all the cells in the Total row.
No. Readings
The total number of readings taken for the traverse.
Average FPM
This is the calculated average of the airflow FPM in the duct.
Record this data to the nearest whole number.
Area
The area of the duct cross-section in square feet.
Total CFM
This is the calculated airflow in Cubic Feet per Minute.
Record to the nearest whole number.
The Design and Test Data tables at the bottom of the page serve the same
purpose as the Specified and Actual fields on other data sheets.
Duct Size I.D.
The interior cross-section dimensions of the duct. This is
recorded as a single number for circular ducts (12”, 8”, etc.)
or as the height and width for rectangular ducts (12” x 8”,
etc.)
CFM
The design airflow volume in Cubic Feet per Minute for that
particular duct. This is usually found by summing up the
terminal devices such as grilles, outlets, etc., for the area
served by the duct.
Areas
The cross-sectional area of the duct in square feet.
Center Line
Static Pressure
Density
Correction
CFM Standard
Correction
The static pressure recorded in the center of the duct. Air
pressure is recorded in inches water gauge and is written n
in. w.g. or n”.
When the air in the system is significantly warmer than
standard or if the measurement is performed at altitude
allowance must be made for the change in air density under
those conditions. The result of the air density correction
formula will be entered in this cell. If there is no correction
needed, enter a ‘1.0’.
This is the entry in the Total CFM cell from the CFM formula
multiplied by the entry in the Density Correction cell. The
result gives the actual CFM in the duct. This entry is rounded
to the nearest whole number.
Air Monitoring Station Data
An air monitoring station is a mass airflow sensor located in the duct to read
velocity and volume of airflow in the system.
Station Number
The unique designation of a given station.
System
The specific system ductwork in which the air monitoring
station is located.
Area Served
The area served by the ductwork in which the air monitoring
station is located.
Size
The cross-sectional dimensions of the duct.
Area Sq. Ft.
The cross-sectional area of the duct in square feet.
Design
FPM
The design velocity of the airflow in Feet Per Minute in the
duct.
CFM
The design volume of the airflow in Cubic Feet per Minute in
the duct.
Test
The first two columns are for recording the velocity of the
airflow in FPM for each balancing pass through the system.
The CFM column is the final volume of airflow in the duct.
Air Distribution Data
The information for terminal devices such as diffusers or grilles is entered on this
data sheet. Because many mechanical specifications require that all adjustments
be documented, it is important to record every pass through the system.
Terminal
Number
Room Number
Terminal
Type
The number given to each air terminal device. This number
is usually assigned when the agenda is created.
The physical location of the terminal. If no room number is
available, then a uniquely descriptive designation should be
used.
The type of air terminal. This information is usually found on
the drawing or in the mechanical schedule.
Size
The size of the air terminal. This information is usually found
on the drawing or in the mechanical schedule.
Factor
This is the Ak value of the air terminal. This information may
be found in the submittal data but will most likely have to be
calculated. If a balometer or some other total capture device
is used, this value will be 1.0.
Design
FPM
The required air velocity in Feet Per Minute for an air
terminal. This is usually a calculated quantity and is found by
dividing the value in the Design CFM cell by the value in the
Factor cell.
CFM
The design airflow quantity in Cubic Feet per Minute for a
given air terminal. This is usually found on the drawing but
may be given in the schedule.
Test-FPM or CFM Circle the appropriate value depending on whether the air
terminals are tested for velocity or volume.
Test 1, 2, 3
Final
FPM
CFM
Record all air terminal readings for each pass through the
system in these cells.
The final velocity readings at each air terminal in Feet Per
Minute.
The final volume readings at each air terminal in Cubic Feet
per Minute.
Terminal Unit Data
The Terminal Unit data sheet is for the recording of VAV box information. There
are several unique fields on this data sheet.
Manufacturer
The manufacturer of the VAV box.
There are four boxes below the data sheet title to indicate which type of box is
represented on the sheet. The fields are Constant, Variable, Single, and Dual.
It is necessary that all of the boxes on the data sheet be of the same type. Check
the appropriate cell to indicate they type of VAV box.
Box Number
This is the unique box designation. This will usually be found
on the drawing. If the designation is not on the drawing or
duplicate designations exist, the specific designations will be
assigned by the person preparing the agenda.
Location
The physical location of the VAV. As with other system
components, this should be easily identifiable with a specific
box.
Model
The manufacturer’s model number for the box.
Size
The inlet size of the box.
Calibration
Factor
Design CFM
Minimum
Maximum
Actual CFM
Minimum
Maximum
After a box has been properly set up and balanced, the final
calibration factor is entered here.
Enter the design minimum and maximum airflow setpoints in
Cubic Feet per Minute in these cells.
The field-measured minimum and maximum airflow volumes
in Cubic Feet per Minute are entered here.
Induction Unit Data
What is this?
Temperature Reading Data
The data on this sheet is used to assist in evaluating system performance at the
time testing and balancing of the system occurs.
Location
Thermostat
Set Point
What does this refer to?
The actual setpoint of the thermostat of the system when the
temperature measurements take place.
Time
The time the data is collected.
DB
The Dry Bulb temperature.
WB
The Wet Bulb temperature. This information is collected with
a sling psychrometer.
%RH
The Relative Humidity in percent. This is found by
calculation using the wet and dry bulb temperatures or from
a chart.
Electric Duct Heater Data
Information on this data sheet is used to evaluate the performance of electric
duct heaters. The cells in the Rated and Test Data rows are not to be filled in.
Required
Heater #
The individual duct heater designation.
Location
The physical location of the duct heater. This should be
room number or some other locational identifier.
Model #
The manufacturer’s model number.
Rated
KW
The manufacturer’s kilowatt (KW) rating for the duct heater.
Stages
The number of stages of heat of the duct heater.
Volts/Phase
The rated voltage and phase of electric power required by
the heater.
Test Data
Voltage/Phase
The actual voltage and phase of the electric power supplied
to the heater.
Amperage
The actual amp draw of the duct heater when all heating
stages are engaged.
KW
This is a calculated quantity found by multiplying the Voltage
x Amperage from the Test Data cells and dividing by 1000.
Pump Data
This data sheet if for the recording of information pertaining to hydronic pumps.
Pump No.
The individual pump designation.
Manufacturer
The mfg. of the pump.
Size
The size of the discharge pipe. This is usually found in the
submittal data or on the pump data plate.
Impeller
The size of the pump impeller. This is also found in the
submittal data or sometimes on the pump data plate.
Service
The type of system on which the pump is located. Examples
are ‘domestic hot water (DHW)’, ‘chilled water supply’, etc.
Test Data
This block contains information collected from the pump
under normal operating conditions. Design refers to
information supplied by the pump manufacturer while Actual
refers to information measured in the field.
GPM
The volume of water moved by the pump in Gallons per
Minute.
FT. HD.
The height of the water column raised by the pump when
operating at design capacity. Because most flow gauges are
calibrated in units of pressure, this quantity must be
calculated for the Actual cell. This quantity is usually
rounded to the nearest tenth HP.
BHP
The Design Brake Horsepower is usually given in the
submittal data. The Actual BHP must be calculated.
Discharge
The discharge pressure of the pump, usually in Pounds per
Square Inch or PSI.
Suction
The suction pressure of the pump, also in PSI.
∆p
The ∆p (read ‘delta p’) is found by subtracting the Suction
pressure from the Discharge pressure and is the change in
pressure across the pump. This quantity is multiplied by 2.31
to give the FT. HD. measurement. Note that this quantity is
also entered in the Actual FT. HD. cell.
Shut Off
These measurements are taken while the pump is running
and the pump discharge valve is shut.
Discharge
The discharge pressure of the pump, usually in Pounds per
Square Inch or PSI.
Suction
The suction pressure of the pump, also in PSI.
∆p
The ∆p (read ‘delta p’) is found by subtracting the Suction
pressure from the Discharge pressure and is the change in
pressure across the pump. This quantity is multiplied by 2.31
to give the FT. HD. measurement. Note that this quantity is
also entered in the Actual FT. HD. cell.
Motor MFG.
The motor manufacturer.
Frame
The motor frame, located on the motor data plate.
H.P.
The rated horsepower for the motor.
RPM
The rated RPM (Revolutions Per Minute) for the motor.
Amps
The first cell is where the rated motor amps are entered. The
ACT: cell is where the actual amps are entered for each leg.
Volts
The first cell is where the rated motor voltage is entered. The
ACT: cell is where the actual voltage is entered for each
leg.
Starter Mfg./
Size
O.L. Size/
Rating
On motors equipped with a motor starter, the manufacturer
name and size of the starter go here.
On motors so equipped, the overload size and rating are
entered here.
Water Balance Data
Information from the testing and balancing of hydronic systems is entered on this
data sheet.
Designation
Design
GPM
The unique identifier for a given balancing valve.
The flow for which the balancing valve is designed in Gallons
Per Minute.
Ft. H2O
The pressure differential across the balancing valve in feet of
water that corresponds to the flow in Gallons Per Minute.
In. H2O
The pressure differential across the balancing valve in
inches of water that corresponds to the flow in Gallons Per
Minute. Balancing valves will usually be calibrated in either
feet or inches of water.
Preliminary
For each pass through the system, enter the appropriate
differential for each balancing valve in feet or inches as
required.
Actual
The information entered into the cells under this heading is
exactly the same type as that entered in the Design section.
The only difference is that the data will be observed
readings.
GPM Totals
The sum of the Design and Actual Gallons Per Minute
columns.
Water Flow Measuring Station
A water flow measuring station differs from a balancing valve in that no
adjustment is made. The fitting is designed to permit a fixed flow of fluid within a
range of pressures. This data sheet has one unique header field:
Manufacturer
Enter the manufacturer of the measuring stations here.
Station Number
The assigned station designation.
Location
The physical location of the station. This should be a room
number other easily identifiable location.
Size
The connecting-pipe size of the station.
Model
The manufacturer’s model number.
Design
GPM
PD
Test
Test 1 PD, 2 PD
The design flow in Gallons Per Minute. This information is
usually found in the submittal data or in the mechanical
schedule.
The design Pressure Drop across the fitting. This will usually
be in feet or inches.
Record the Pressure Drop across the fitting here in feet or
inches, as required.
Final
PD
The final Pressure Drop across the fitting in feet or inches.
GPM
The final fluid flow through the fitting in Gallons Per Minute.
Cooling Coil Data
This data sheet is used to enter information about chilled water cooling coils in air
handlers.
System
The name of the air handler in which the cooling coil is
located.
Location
The physical location of the air handler in which the cooling
coil is located.
Service
The area served by the system. Examples would be ‘3rd
Floor South’, ’East Side’, etc.
The following cells have both Design and Actual fields. The Design field
contains information supplied by the engineer or manufacturer and is usually
found in the submittal information or in the mechanical schedules. The Actual
field contains data that is measured in the field.
CFM
The airflow volume across the coil in Cubic Feet per Minute.
GPM
The fluid flow through the coil in Gallons Per Minute.
Coil P.D., FT.
The fluid pressure drop across the coil measured as the
difference in pressure between the inlet and outlet
connections. If the reading gauge is calibrated in Pounds per
Square Inch (PSI), then the result will have to be multiplied
by 2.31 to obtain the difference in feet.
E.W.T., ºF
The Entering Water Temperature in degrees Fahrenheit.
L.W.T., ºF
The Leaving Water Temperature in degrees Fahrenheit.
E.A.T., DB ºF
The Entering Air Temperature (Dry Bulb) in degrees
Fahrenheit.
E.A.T., WB ºF
The Entering Air Temperature (Wet Bulb) in degrees
Fahrenheit.
L.A.T., DB ºF
The Leaving Air Temperature (Dry Bulb) in degrees
Fahrenheit.
L.A.T., WB ºF
The Leaving Air Temperature (Wet Bulb) in degrees
Fahrenheit.
Air MBH
The heat loss (cooling) of the air across the coil in Millions of
BTU per Hour. This quantity is found by calculation.
Water MBH
The heat gain (heating) of the water through the coil in
Millions of BTU per Hour.
Direct Expansion Cooling Coil Data
This data sheet is to record the information associated with the performance of
cooling coils that use a chemical refrigerant for heat transfer.
System
The unit name in which the cooling coil is located.
Location
The physical location of the unit.
Service
The area served by the unit. Examples might be ‘Computer
Room’, 4th Floor’, etc.
Manufacturer
The unit manufacturer.
The following fields have two categories, Design and Actual. Design refers to
the performance parameters supplied by the manufacturer and can be found on
the unit data plate or in the submittal data. Actual is the performance data
measured in the field.
CFM
The volume of airflow through the coil in Cubic Feet per
Minute.
E.A.T., DB ºF
The Dry Bulb Entering Air Temperature to the coil in degrees
Fahrenheit.
E.A.T., WB ºF
The Wet Bulb Entering Air Temperature to the coil in
degrees Fahrenheit.
L.A.T., DB ºF
The Dry Bulb Leaving Air Temperature from the coil in
degrees Fahrenheit.
L.A.T., WB ºF
The Wet Bulb Leaving Air Temperature from the coil in
degrees Fahrenheit.
MBH
The total heat gain (or loss) as the air passes through the
coil in Millions of BTU per Hour. This is a calculated quantity.
Heating Coil Data
This is the same type of information used for the Cooling Coil Data sheet,
except that here the air is gaining rather than losing heat.
System
The name of the air handler in which the heating coil is
located.
Location
The physical location of the air handler in which the heating
is located.
Service
The area served by the system. Examples would be ‘3rd
Floor South’, ’East Side’, etc.
The following cells have both Design and Actual fields. The Design field
contains information supplied by the engineer or manufacturer and is usually
found in the submittal information or in the mechanical schedules. The Actual
field contains data that is measured in the field.
CFM
The airflow volume across the coil in Cubic Feet per Minute.
GPM
The fluid flow through the coil in Gallons Per Minute.
Coil P.D., FT.
The fluid pressure drop across the coil measured as the
difference in pressure between the inlet and outlet
connections. If the reading gauge is calibrated in Pounds per
Square Inch (PSI), then the result will have to be multiplied
by 2.31 to obtain the difference in feet.
E.W.T., ºF
The Entering Water Temperature in degrees Fahrenheit.
L.W.T., ºF
The Leaving Water Temperature in degrees Fahrenheit.
E.A.T., DB ºF
The Entering Air Temperature (Dry Bulb) in degrees
Fahrenheit.
E.A.T., WB ºF
The Entering Air Temperature (Wet Bulb) in degrees
Fahrenheit.
L.A.T., DB ºF
The Leaving Air Temperature (Dry Bulb) in degrees
Fahrenheit.
L.A.T., WB ºF
The Leaving Air Temperature (Wet Bulb) in degrees
Fahrenheit.
Air MBH
The heat gain of the air across the coil in Millions of BTU per
Hour. This quantity is found by calculation.
Water MBH
The heat loss of the water through the coil in Millions of BTU
per Hour.
Cooling Tower Data
This data sheet is used to record the performance and motor data for a cooling
tower.
Designation
The individual cooling tower designation.
Manufacturer
The manufacturer of the cooling tower.
Model No.
The manufacturer’s model number for the unit.
Serial Number
The manufacturer’s unique serial number for the unit.
Rated Capacity
In Tons
Cooling tower capacities are given in tons of cooling. This
information is usually found on the unit data plate or in the
submittal data.
The following cells have both Design and Actual fields. The Design field
contains information supplied by the engineer or manufacturer and is usually
found in the submittal information or in the mechanical schedules. The Actual
field contains data that is measured in the field.
Performance
GPM
The rate of flow of water through the tower in Gallons Per
Minute.
Entering Water ºF The temperature of the water entering the cooling tower in
degrees Fahrenheit.
Leaving Water ºF The temperature of the water leaving the cooling tower in
degrees Fahrenheit.
Entering
Wet Bulb ºF
Leaving
The wet bulb temperature of the air entering the cooling
tower in degrees Fahrenheit.
Wet Bulb ºF
Ambient
Dry Bulb ºF
The wet bulb temperature of the air leaving the cooling tower
in degrees Fahrenheit.
The dry bulb temperature of the surrounding air in degrees
Fahrenheit.
Cooling towers may have more than one fan motor. It is important that data for all
motors is recorded.
Motor
Manufacturer
The motor manufacturer.
Frame
The frame size of the motor. This is usually found on the
motor nameplate and may also be in the submittal data.
HP/KW
Depending on where the motor was manufactured the power
rating may be in Horsepower or Kilowatts. Only one of the
too should be put in this cell.
Phases
The phase number of the electrical power supplied to the
motor.
Nameplate Amps The design Full Load Amps (FLA) of the motor. Note that
motors can be designed to run on different voltages and the
FLA will vary according to the voltage that the motor is
running on.
Actual Amps
The field-recorded amperage of the motor under normal
operating conditions.
Nameplate Volts
The voltage on which the motor is designed to operate. Care
should be taken to ensure that the proper voltage is
recorded.
Actual Volts
The actual voltage on which the motor is operating.
Starter Mfg./Size
On motors equipped with motor starters, put the
manufacturer and size of the motor starter here.
Heater Elem. Size/
Rating
Put the size and rating of the motor starter heater element
here.
Design RPM
The design speed of the motor in Revolutions Per Minute
Actual RPM
The measured speed of the motor in Revolutions Per
Minute.
Chiller Data
This data sheet is only for water cooled chillers.
Unit Number
The individual unit number as specified on the drawings or in
the mechanical schedule.
Manufacturer
The manufacturer of the chiller.
Capacity
Chillers are rated in tons of cooling. This information should
be recorded here.
Model Number
The manufacturer’s model number for the unit.
Serial Number
The manufacturer’s unique serial number for the unit.
The following cells have both Design and Actual fields. The Design field
contains information supplied by the engineer or manufacturer and is usually
found in the submittal information or in the mechanical schedules. The Actual
field contains data that is measured in the field.
Cooler
This is also known as the evaporator.
Entering Water
Temp.
The temperature of the water entering the evaporator.
Leaving Water
Temp.
The temperature of the water leaving the evaporator.
Pressure Drop Ft. The difference in pressure between the inlet and outlet of the
evaporator. If readings are taken in PSI (Pounds per Square
Inch) then the difference will have to be multiplied by 2.31 to
obtain the differential in feet.
GPM
Condenser
Entering Water
Temp.
The volume of water flow through the evaporator in Gallons
Per Minute.
The temperature of the water entering the condenser.
Leaving Water
Temp.
The temperature of the water leaving the condenser.
Pressure Drop Ft. The difference in pressure between the inlet and outlet of the
condenser. If readings are taken in PSI (Pounds per Square
Inch) then the difference will have to be multiplied by 2.31 to
obtain the differential in feet.
GPM
The volume of water flow through the condenser in Gallons
Per Minute.
Electrical
Voltage
The operating voltage of the condenser.
Amperage
The operating current draw of the condenser.
Air Cooled Chiller Data
Information for air cooled chillers is put on this data sheet.
Unit Number
The individual unit number as specified on the drawings or in
the mechanical schedule.
Manufacturer
The manufacturer of the chiller.
Capacity
Chillers are rated in tons of cooling. This information should
be recorded here.
Model Number
The manufacturer’s model number for the unit.
Serial Number
The manufacturer’s unique serial number for the unit.
The following cells have both Design and Actual fields. The Design field
contains information supplied by the engineer or manufacturer and is usually
found in the submittal information or in the mechanical schedules. The Actual
field contains data that is measured in the field.
Cooler
This is also known as the evaporator.
Entering Water
Temp.
The temperature of the water entering the evaporator.
Leaving Water
Temp.
The temperature of the water leaving the evaporator.
Pressure Drop Ft. The difference in pressure between the inlet and outlet of the
evaporator. If readings are taken in PSI (Pounds per Square
Inch) then the difference will have to be multiplied by 2.31 to
obtain the differential in feet.
GPM
The volume of water flow through the evaporator in Gallons
Per Minute.
Condenser
Entering Water
Temp.
The temperature of the water entering the condenser.
Electrical
Compressor
Amps
The operating voltage of the compressor.
Compressor
Volts
The operating voltage of the compressor.
Fan Amps
The operating amperage of the fan.
Fan Volts
The operating voltage of the fan.
Air Cooled Condensing Unit Data
Information for air cooled condensing units goes on this sheet. Note that there is
space on the sheet for up to four units.
Unit Number
The individual unit number as specified on the drawings or in
the mechanical schedule.
Manufacturer
The manufacturer of the chiller.
Capacity
Chillers are rated in tons of cooling. This information should
be recorded here.
Model Number
The manufacturer’s model number for the unit.
Serial Number
The manufacturer’s unique serial number for the unit.
The following cells have both Design and Actual fields. The Design field
contains information supplied by the engineer or manufacturer and is usually
found in the submittal information or in the mechanical schedules. The Actual
field contains data that is measured in the field.
Condenser
Entering Air
Temp.
The temperature of the air entering the condenser.
Electrical
Compressor
Amps
The operating voltage of the compressor.
Compressor
Volts
The operating voltage of the compressor.
Fan Amps
The operating amperage of the fan.
Fan Volts
The operating voltage of the fan.
Hot Water Boiler Data
This data sheet is to be used for the testing of hot water boilers. Note that there
are provisions for data for up to four boilers.
Unit Number
The individual unit number as specified on the drawings or in
the mechanical schedule.
Location
The physical location of the boiler.
Rating BTU/Hour Boilers are rated in terms of how many BTU/Hour they can
provide under normal operating conditions. This information
may be found in the submittal data or on the boiler data
plate.
Manufacturer
The manufacturer of the boiler.
Model Number
The manufacturer’s model number for the unit.
Serial Number
The manufacturer’s unique serial number for the unit.
The following cells have both Design and Actual fields. The Design field
contains information supplied by the engineer or manufacturer and is usually
found in the submittal information or in the mechanical schedules. The Actual
field contains data that is measured in the field.
Secondary Hot Water
Entering
Temperature
The temperature of the water entering the boiler.
Leaving
Temperature
The temperature of the water leaving the boiler.
Pressure Drop Ft. The difference in pressure between the inlet and outlet of the
boiler. If readings are taken in PSI (Pounds per Square Inch)
then the difference will have to be multiplied by 2.31 to
obtain the differential in feet.
Flow GPM
The volume of water flow through the boiler in Gallons Per
Minute.
Control Setting
What is this?
Steam Boiler Data
Information gathered when testing steam boilers is entered on this data sheet. As
with the Hot Water Boiler Data Sheet, there is space for up to four units.
Unit Number
The individual unit number as specified on the drawings or in
the mechanical schedule.
Location
The physical location of the boiler.
Rating BTU/Hour Boilers are rated in terms of how many BTU/Hour they can
provide under normal operating conditions. This information
may be found in the submittal data or on the boiler data
plate.
Manufacturer
The manufacturer of the boiler.
Model Number
The manufacturer’s model number for the unit.
Serial Number
The manufacturer’s unique serial number for the unit.
The following cells have both Design and Actual fields. The Design field
contains information supplied by the engineer or manufacturer and is usually
found in the submittal information or in the mechanical schedules. The Actual
field contains data that is measured in the field.
Steam
Pressure PSI
The steam pressure in Pounds per Square Inch.
Control Setting
What is this?
Water Exchanger Data
Data for the testing of water-to-water heat exchangers is located on this sheet.
Unit Number
The individual unit number as specified on the drawings or in
the mechanical schedule.
Location
The physical location of the boiler.
Service
The service for which the heat exchanger is used. Examples
might be ‘Domestic Hot Water (DHW)’, ‘Hydronic Heat’, etc.
Manufacturer
The manufacturer of the boiler.
Model Number
The manufacturer’s model number for the unit.
Serial Number
The manufacturer’s unique serial number for the unit.
The following cells have both Design and Actual fields. The Design field
contains information supplied by the engineer or manufacturer and is usually
found in the submittal information or in the mechanical schedules. The Actual
field contains data that is measured in the field.
Primary Water
Entering
Temperature
Leaving
Temperature
This is the water from which heat is to be extracted.
The entering temperature of the primary water to the heat
exchanger.
The leaving temperature of the primary water to the heat
exchanger.
Pressure Drop Ft. The difference in pressure between the inlet and outlet of the
primary water to the heat exchanger. If readings are taken in
PSI (Pounds per Square Inch) then the difference will have
to be multiplied by 2.31 to obtain the differential in feet.
Flow GPM
The volume of primary water flow through the heat
exchanger in Gallons Per Minute.
MBH
The amount of heat rejected by the primary water flow in
Millions of BTU per Hour. This is a calculated quantity.
Control Setting
What is this?
Secondary Water This is the water to which heat is to be added.
Entering
Temperature
Leaving
Temperature
The entering temperature of the secondary water to the heat
exchanger.
The leaving temperature of the secondary water to the heat
exchanger.
Pressure Drop Ft. The difference in pressure between the inlet and outlet of the
secondary water to the heat exchanger. If readings are taken
in PSI (Pounds per Square Inch) then the difference will
have to be multiplied by 2.31 to obtain the differential in feet.
Flow GPM
The volume of secondary water flow through the heat
exchanger in Gallons Per Minute.
MBH
The amount of heat gained by the secondary water flow in
Millions of BTU per Hour. This is a calculated quantity.
Control Setting
What is this?
Steam Heat Exchanger Data
This data sheet is used to record test data for steam-to-water heat exchanger
testing.
Unit Number
The individual unit number as specified on the drawings or in
the mechanical schedule.
Location
The physical location of the boiler.
Service
The service for which the heat exchanger is used. Examples
might be ‘Domestic Hot Water (DHW)’, ‘Hydronic Heat’, etc.
Manufacturer
The manufacturer of the boiler.
Model Number
The manufacturer’s model number for the unit.
Serial Number
The manufacturer’s unique serial number for the unit.
The following cells have both Design and Actual fields. The Design field
contains information supplied by the engineer or manufacturer and is usually
found in the submittal information or in the mechanical schedules. The Actual
field contains data that is measured in the field.
Steam
Pressure PSI
The pressure of the entering steam in Pounds per Square
Inch.
Secondary
Hot Water
Entering
Temperature
The temperature of the water entering the heat exchanger.
Leaving
Temperature
The temperature of the water leaving the heat exchanger.
Pressure Drop Ft. The difference in pressure between the inlet and outlet of the
secondary water to the heat exchanger. If readings are taken
in PSI (Pounds per Square Inch) then the difference will
have to be multiplied by 2.31 to obtain the differential in feet.
Flow GPM
The volume of secondary water flow through the heat
exchanger in Gallons Per Minute.
MBH
The amount of heat gained by the secondary water flow in
Millions of BTU per Hour. This is a calculated quantity.
Control Setting
What is this?