KRUEGER SVE User manual

Form #: SIDOM.4 Revised: 03/19
Installation, Operation, and
Maintenance Manual
Single-Duct and Retrofit Terminal Units
Models: LMHS, RVE, SVE

Form #: SIDOM.4 Page | 2 Revised: 03/19
Pre-Installation
Figure 1 - Basic LMHS Unit
General
The LMHS, RVE, and SVE single duct terminals are available with factory installed Pneumatic,
Analog electronic, and DDC control options. Figure 1 shows a basic LMHS unit.
Shipping
Inspect for damage upon receipt. Shipping damage claims should be filed with shipper at time of
delivery. LMHS units with basic configuration or with hot water coils, RVE units, and SVE units are
packaged into boxes and are stacked onto pallets. LMHS units with attenuation or electric heat are
stacked directly onto pallets. In both instances, pallets should not be stacked on top of one another.
Storage and Handling
Store in a clean, dry, and covered location. Do not stack pallets. When unpacking units, care should
be taken that the inlet collars and externally mounted components do not become damaged. Do not
lift units using collars, inlet flow sensors, or externally mounted components as handles. Do not lay
uncrated units on end or sides. Do not stack uncrated units over 6 ft. high. Do not handle control
boxes by tubing connections or other external attachments.
Unit Weights
Please see Table 5 in Appendix A for unit weights.
Initial Inspection
Once items have been removed from the carton, check carefully for damage to duct connections,
inlet probes or controls. File any damage claims immediately with the transportation agency and
notify the factory.

Form #: SIDOM.4 Page | 3 Revised: 03/19
Unit Identification
Each unit is supplied with a shipping label and an identification label. The following Figure 2 is an
example of the identification label that is attached to each unit.
Figure 2 –Example Identification Label
Warning
Disconnect all power to the unit before performing maintenance or service. Unit may
automatically start if power is not disconnected. Electrical shock and personal injury could
result.
If it is necessary to remove and dispose of mercury contactors in electric heat section,
follow all local, state, and federal laws regarding disposal of equipment containing
hazardous materials.
This product can expose you to chemicals including formaldehyde, which is known to the
State of California to cause cancer. For more information go to www.P65Warnings.ca.gov
Installation and Precaution
Check that construction debris does not enter unit or ductwork. Do not operate the central-station
air-handling fan without final or construction filters in place. Accumulated dust and construction
debris distributed through the ductwork can adversely affect unit operation.

Form #: SIDOM.4 Page | 4 Revised: 03/19
Service Access
Provide service clearance for unit access.
Codes
Install units in compliance with all applicable code requirements.
Warranty
All Krueger furnished items carry a 1-year limited warranty from the date of shipment.
Maintenance
No periodic preventative maintenance is required, unless called for by a specific control sequence.
Control Arrangements
The LMHS single duct and RVE / SVE retrofit units are offered with a wide variety of factory-mounted
controls that regulate the volume of air delivery from the unit and respond to cooling and heating
load requirements of the conditioned space. These devices are available in both pneumatic and
electronic arrangements. Some DDC (Direct Digital Controls) control packages provided by others
are also available for consignment mounting.
The following listings contain the basic function arrangements for each control offering. Circuit
diagrams, operating sequences, and function descriptions are contained in separate Application
Data publications because of the variety of functions available. Refer to the specific control
publication for details.
Direct Digital Electronic Control Arrangement (Field Supplied) - Control packages are field supplied
for factory mounting, unless otherwise noted. All DDC control arrangements include an inlet flow
sensor, 24V transformer (optional), and control enclosure. Contact the factory for details about
mounting field-supplied controls.
Analog Electronic Control Arrangement -Pressure independent control packages are available
without supplemental heat, with on/off hot water or electric heat, proportional hot water heat, or with
cooling/heating automatic changeover control. All analog control arrangements include an inlet flow
sensor, 24V transformer (optional), control enclosure, and wall thermostat with LCD display.
2100: Heating control
2101: Cooling control
2102: Cooling with on/off electric heat control
2103: Cooling with on/off hot water heat control
2104: Cooling/heating automatic changeover control
2105: Cooling with proportional hot water heat control
2110: Cooling with Solid State LineaHeat Proportional heat control
2111: Cooling/Heating with automatic change over with up to 3 stages of electric heat control
2113: Cooling/Heating with automatic change over with Solid State LineaHeat Proportional heat
2115: Upstream static pressure monitoring
2116: Downstream static pressure monitoring

Form #: SIDOM.4 Page | 5 Revised: 03/19
Pneumatic Control Arrangement - All control packages are pressure independent (unless otherwise
noted below) and available with or without hot water heat, dual maximum airflow, heating and cooling
maximum airflow and dual minimum airflow. All control arrangements include a standard K4
LineaCross inlet flow sensor.
1100 (Actuator only): DA-NC Pressure dependent control
1101 (Actuator only): RA-NO Pressure dependent control
1102 (Single function controller): DA-NO with or without hot water or electric heat
1103 (Single function controller): RA-NC with or without hot water or electric heat
1104 (Multi-function controller): DA-NO with or without hot water or electric heat
1105 (Multi-function controller): DA-NC with or without hot water or electric heat
1106 (Multi-function controller): RA-NO with or without hot water or electric heat
1107 (Multi-function controller): RA-NC with or without hot water or electric heat
1108 (Dual Maximum Control): DA-NO with or without hot water or electric heat
1109 (Heating/Cooling Maximum Control): DA-NO with or without hot water or electric heat
1110 (Dual Minimum Control): DA-NO with or without hot water or electric heat
1111 (Dual Minimum Control): RA-NO with or without hot water or electric heat
1112 (Heating/Cooling Maximum Control): RA-DO with or without hot water or electric heat
Pneumatic Control Legend
DA: Direct acting thermostat
RA: Reverse acting thermostat
NO: Normally open damper position
NC: Normally closed damper position
Single function controller: Provides single function, i.e., DA-NO
Multi-function Controller: Capable of providing DA-NO, DA-NC, RA-NC or RA-NO functions
No Control Arrangement
0000: Unit with no control box.
D000: Unit with control enclosure and transformer.
D001: Unit with control enclosure and no transformer. Also used for control enclosure and
electric heat.
DXX0: FMA mount for DDC controls with no heat.
DXX1: FMA mount for DDC controls with electric heat.

Form #: SIDOM.4 Page | 6 Revised: 03/19
Installation
Step 1 - Install Unit
Move unit to installation area. Remove unit from shipping package. Do not handle by
controls, flow sensors or damper extension rod.
Optionally, the unit may have factory-installed hanger brackets.
Suspend units from building structure with appropriate field supplied straps, rods, or hanger
wires. Secure the unit and level it in each direction.
Figure 3 below illustrates the use of optional factory installed hanger brackets for
suspending units.
Figure 3 –Factory Installed Hanger Brackets (field supplied rod, nuts and washers)
Step 2 –Make Duct Connections
Install supply ductwork on each of the unit inlet collars. It is recommended that a length of
straight duct equal to 3 times the diameter of the duct is supplied to the inlet of the unit. An
elbow put at the inlet of the unit will create turbulence at the inlet making it difficult for the
flow sensor to accurately measure the airflow. Check that air-supply duct connections are
airtight and follow all accepted medium-pressure duct installation procedures. Refer to
Tables 6.A, 6.B, and 6.C in Appendix A for pressure and flow data.
Install the discharge ducts. Fully open all balancing dampers.

Form #: SIDOM.4 Page | 7 Revised: 03/19
Step 3 –Install Sensors and Make Field Wiring Connections (Electric
Analog or Direct Digital Controls)
Refer to specific unit dimensional submittals and control application diagrams for control
specifications. All field wiring must comply with National Electrical Code (NEC) and local
requirements. Refer to the wiring diagram on the unit for specific wiring connections. A field-
supplied transformer is required if the unit was not equipped with a factory installed
transformer. See the following Figure 4 for illustration.
Figure 4 - Wiring of Optional Factory Mounted Transformer
NOTE: Refer to the wiring diagram attached to each unit for unit specific information.

Form #: SIDOM.4 Page | 8 Revised: 03/19
Single duct terminal units with electric heat are supplied with a single point wiring connection in the
heater control box. All unit power is supplied through this connection. Models with electric heat are
factory equipped with a control transformer. The following Figure 5 illustrates an example of a high
voltage wiring diagram that includes electric heat.
Figure 5 - Typical Power Connections for LMHS units with 3-Stage Electric Heat
For wiring and unit ampacities, please refer to Table 7 in Appendix A.
NOTE: Refer to the wiring diagram attached to each unit for unit specific information. Unit airflow
should not be set outside of the range noted in Figure 6 (pg. 11). The minimum
recommended airflow for units with electric heat is at least 75 cfm per kW and should not
drop below the minimum values listed in Table 6.A in Appendix A. The maximum unit
discharge temperature should not exceed 120  F. To prevent air stratification, the ASHREA
Handbook of Fundamentals recommends a discharge temperature not to exceed 90 °F.

Form #: SIDOM.4 Page | 9 Revised: 03/19
Controls Setup
General
The LMHS single duct VAV terminal is designed to supply a varying quantity of cold primary air to a
space in response to thermostat demand. Some units have reheat options to meet heating demand
requirements as well. Most VAV terminals are equipped with pressure compensating controls to
regulate the response to the thermostat independent of the pressure in the supply ductwork. To
balance the unit it is necessary to set both the maximum and minimum set points of the controller.
Each control option has specific procedures for balancing the unit.
Set Points
Maximum and minimum airflow set points are job and unit specific. Where maximum and minimum
airflow levels are not specified on the order, default values are noted on unit label.
Field Adjustment of Minimum and Maximum Airflow Set Points
Each unit is equipped with an amplifying inlet airflow sensor that measures a differential pressure
proportional to the airflow. The relationship between the inlet airflow pressures and CFM is shown
in Figure 6 –Krueger Inlet Airflow Sensor Chart (pg. 11). This chart is also attached to each unit.
The controls on most new projects are Direct Digital Controls (DDC). These controls require that
flow parameters be loaded during start-up to translate the sensed pressure into a measured flow
rate. There are several conventions in use for representing this flow factor; however, there is no
universally accepted method.
1.) Magnification Factor - The magnification factor may be expressed as the ratio of either
velocity or pressure of the output of the sensor to that of a pitot tube.
For example, a velocity magnification may be used. All Krueger probes develop an
average signal of 1” WG @2625 fpm. This gives a velocity magnification of
4005/2625, or 1.52.
The magnification factor may be a pressure factor. In this case, the ratio of
pressures at a given air velocity is presented. For a velocity constant of 2626, at
1000 fpm, this is 0.1451 / 0.0623 = 2.33.
2.) K-Factor: The ‘K-factor’ may be represented in two ways –
It may be a velocity K-factor, which is the velocity factor independent of the inlet
area (2625 fpm/in. WG for all Krueger inlet airflow sensors, Linear and LineaCross).
Alternatively, it may be the airflow K-Factor, which is the product of the velocity
factor and the inlet area. For an 8 inch Krueger unit this would be 2625 * 0.349, or
916. A separate factor is required for each size. The following Table 1 contains the
K-Factors for all Krueger VAV terminal inlets.
CFM=K√∆P
i. CFM= ft.3minute
⁄
ii. ∆P= Pressure Differential ("WG)
iii. K=Sensor Constant

Form #: SIDOM.4 Page | 10 Revised: 03/19
Inlet Airflow Sensor Area and K Factor
LMHS, RVE
04
05
06
07
08
09
10
12
14
16
22
Inlet Diameter, inches
4
5
6
7
8
9
10
12
14
16
22
Velocity Magnification
1.52
1.52
1.52
1.52
1.52
1.52
1.52
1.52
1.52
1.52
1.52
Velocity Factor
2625
2625
2625
2625
2625
2625
2625
2625
2625
2625
2625
CFM K Factor
229
358
515
702
916
1160
1432
2062
2806
3665
7000
Inlet Area, Sq. ft.
0.087
0.136
0.196
0.267
0.349
0.442
0.545
0.785
1.069
1.396
2.667
Recommended Min
CFM @ 0.03” WG
40
62
89
122
159
201
248
357
486
635
1212
Table 1 –Inlet Airflow Sensor K Factor
System Calibration of Airflow Sensor
To achieve accurate pressure independent operation, the inlet airflow sensor must be calibrated to
the controller. This ensures that airflow measurements will be accurate for all terminals at system
start-up. System calibration is accomplished by calculating a flow coefficient that adjusts the
pressure fpm characteristics. The flow coefficient is calculated by dividing a unit’s design air volume
(in CFM at a differential pressure of 1” WG) by the standard Pitot tube coefficient of 4005.This ratio
is the same for all sizes, no matter which probe type is installed. Calculate the design air velocity by
dividing the design air volume by the nominal inlet area (in sq. ft.). This factor is the CFM K factor
listed in the Table 1 above.

Form #: SIDOM.4 Page | 11 Revised: 03/19
Figure 6 - Krueger Inlet Airflow Sensor Chart Chart

Form #: SIDOM.4 Page | 12 Revised: 03/19
Pneumatic Controls
Volume controllers for LMHS units are shown in Figure 7 below. Each control sequence, function
arrangement and controller is shown in Table 2.
Figure 7 –Pneumatic Volume Controllers
Control Sequence
Function Arrangement
KMC Part Number
1102
DA-NO
CSC-2003
1103
RA-NC
CSC-2004
1104
DA-NO
CSC-3011
1105
DA-NC
CSC-3011
1106
RA-NO
CSC-3011
1107
RA-NC
CSC-3011
1108
DA-NO, DUAL MAXIMUM
CSC-3011
1109
DA-NO, HEATING/COOLING MAXIMUM
CSC-3011 (2X)
1110
DA-NO, DUAL MINIMUM
CSC-3011
1111
RA-NO, DUAL MINIMUM
CSC-3011
1112
RA-NO, HEATING/COOLING MAXIMUM
CSC-3011 (2X)
LEGEND: DA - DIRECT ACTING, NC - NORMALLY CLOSED,
NO - NORMALLY OPEN, RA - REVERSE ACTING
Table 2 –Pneumatic Control Sequence Controllers
KMC - CSC 3011
(Multi-Function Controller)
Pneumatic Volume Controllers
KMC - CSC 2004
(Normally Closed)
*LO and HI are reversed*
KMC - CSC 2003
(Normally Open)

Form #: SIDOM.4 Page | 13 Revised: 03/19
Preparation for Balancing (Control Sequences 1102 and 1103)
1. Inspect all pneumatic connections to assure tight fits and proper locations.
2. Verify that the thermostat being used is compatible with the control sequence provided
(direct acting or reverse acting).
3. Check main air pressure at the controller(s). The main air pressure must be between 15 psi
and 25 psi. (If dual or switched-main air pressure is used, check the pressure at both high
and low settings.) The difference between “high” pressure main and “low” pressure main
should be at least 4 psi, unless otherwise noted, and the “low” setting difference should
exceed 15 psi.
4. Check that the unit damper will fail to the proper position when main air pressure is lost.
Disconnect the pneumatic actuator line from the velocity controller and observe the VAV
damper position. The damper should fail to either a normally open position (indicator mark
on shaft end is horizontal) or a normally closed position (indicator mark on shaft end is
vertical).
5. Check that there is primary airflow in the inlet duct.
6. Connect a Magnehelic gage, inclined manometer, or other differential pressure measuring
device to the balancing taps provided in the velocity probe sensor lines. The manometer
should have a full scale reading of 0.0 to 1.0 in. WG. The high-pressure signal is delivered
from the front sensor tap (away from the valve), and the low pressure signal is delivered
from the back line (near the valve). The pressure differential between high and low
represents the amplified velocity pressure in the inlet duct.
7. Read the differential pressure and refer to the Krueger Inlet Airflow Sensor Chart, Figure 6
(pg. 11) to determine the airflow in the terminal unit. For example, a differential pressure of
0.10 in. WG for a size 8 unit yields an airflow of 290 cfm.
Balancing Procedure (Control Sequences 1102 and 1103)
Direct Acting Thermostat; Normally Open Damper (Control Sequence 1102)
1. Minimum Volume Setting:
Disconnect the thermostat line from the volume controller.
Adjust the minimum volume control knob (marked “LO” and located in the center
of the controller) to achieve the required minimum flow. To determine the required
pressure differential, refer to Table 1, Table 2, and the Krueger Inlet Airflow Sensor
Chart that is provided on the side of the VAV unit and in Figure 6.
Reconnect the thermostat line.
2. Maximum Volume Setting:
Disconnect the thermostat line from the volume controller.
Apply 15 + psi to the thermostat port on the volume controller (marked “T”) by
tapping into the main air pressure line.
Adjust the maximum volume control knob (marked “HI” and located at the side of
the controller) until the desired pressure differential is registered on the manometer.
To determine the required pressure differential, refer to Table 1, Table 2, and the
Krueger Inlet Airflow Sensor Chart that is provided on the side of the VAV unit and
in Figure 6 (pg. 11).
Reconnect the thermostat line.

Form #: SIDOM.4 Page | 14 Revised: 03/19
Reverse Acting Thermostat; Normally Closed Damper (Control Sequence 1103)
1. Maximum Volume Setting:
Disconnect the thermostat line from the velocity controller.
Adjust the maximum volume control knob (marked “HI” and located in the center of
the controller) to achieve the required minimum flow. To determine the required
pressure differential, refer to Table 1, Table 2, and the Krueger Inlet Airflow Sensor
Chart that is provided on the side of the VAV unit and in Figure 6 (pg. 11).
Reconnect the thermostat line.
2. Minimum Volume Setting:
Disconnect the thermostat line from the velocity controller.
Apply 15 + psi to the thermostat port on the volume controller (marked “T”) by
tapping into the main air pressure line.
Adjust the minimum volume control knob (marked “LO” and located at the side of
the controller) until the desired pressure differential is registered on the manometer.
To determine the required pressure differential, refer to Table 1, Table 2, and the
Krueger Inlet Airflow Sensor Chart that is provided on the side of the VAV unit and
in Figure 6 (pg. 11).
Reconnect the thermostat line.
Balancing Procedure (Control Sequences 1104-1110)
1. Damper action is factory set at N.O. (normally open), or N.C. (normally closed). To change
this setting perform the following steps:
Loosen the damper selection screw.
Turn the selection dial clockwise until the “NC” or “NO” arrow aligns with the
“DAMPER” arrow.
NOTE: Accuracy in the alignment of the arrows is very important. Make this adjustment as
precise as possible. (See Figure 8 below)
2. Pipe the controller: Connect port “B” to the damper actuator. Connect port “M” to the clean,
dry main air. Connect port “T” to the thermostat output. Connect port “H” to the total pressure
tap on the airflow sensor. Connect port “L” to the static pressure tap on the airflow sensor.
The controller can be set up for cooling or heating applications using either a D.A (Direct
Acting) or R.A. (Reverse Acting) thermostat signal. The two flow adjustments are labeled
“LO STAT ∆P” and “HI STAT ∆P”.

Form #: SIDOM.4 Page | 15 Revised: 03/19
Figure 8 –CSC 3011
Adjusting Minimums and Maximums
When adjusting the minimum and maximum airflow settings, the output responds slowly to
changes in the set point. Wait for the flow rate to stabilize after making an adjustment
(usually 20 to 30 seconds) before making further adjustments. Also, if the damper position
is completely closed or open when starting this step, turn the adjustment one full turn then
wait 20 to 30 seconds for a change in the flow reading of the Magnehelic gauge. If no change
occurs after this time, repeat until the flow rate changes.
LO STAT ∆PSetting is the desired airflow limit when the thermostat pressure is less than, or equal
to, the reset start point.
For DA Cooling or RA Heating (See Table 2 on pg. 12): Adjust LO STAT ∆P to the
desired minimum airflow by turning knob CLOCKWISE with 0 psig (or a pressure less
than the reset start point) at port “T”. The LO STAT ∆P must be set first. The LO STAT
∆P will affect the HI STAT ∆P setting.
For RA Cooling or DA Heating (See Table 2 on pg. 12): Adjust LO STAT ∆P to the
desired maximum airflow by turning knob COUNTER CLOCKWISE with 0 psig (or a
pressure less than the reset start point) at port “T”. The LO STAT ∆P must be set first.
The LO STAT ∆P will affect the HI STAT ∆P setting.
HI STAT ∆P Setting is the desired airflow limit when the thermostat pressure is greater than, or equal
to, the reset stop-point. The reset stop-point is the reset span pressure added to the reset start point
pressure.
For DA Cooling or RA Heating (See Table 2 on pg. 12): Adjust HI STAT ∆P to the desired
maximum airflow by turning knob COUNTER CLOCKWISE with 20 psig (or a pressure
greater than the reset stop point) at port “T”. The HI STAT ∆P must be set last. The HI STAT
∆P setting will be affected by the LO STAT ∆P setting.

Form #: SIDOM.4 Page | 16 Revised: 03/19
For RA Cooling or DA Heating (See Table 2 on pg. 12): Adjust HI STAT ∆P to the desired
minimum airflow by turning knob CLOCKWISE with 20 psig (or a pressure greater than the
reset stop point) at port “T”. The HI STAT ∆P must be set last. The HI STAT ∆P setting will
be affected by the LO STAT ∆P setting.
NOTE:
If the LO STAT ΔP Limit must be set at “0” (zero minimum), do not turn the LO STAT
ΔP knob completely clockwise. The knob will adjust one and one-half turns after a zero
minimum is reached. Turning the LO STAT ΔP knob completely clockwise will result in
a negative reset condition. This means that when the controller begins to reset at the
reset start point, it must first overcome the negative adjustment and will not begin to
reset from “0” until a higher thermostat reset pressure is reached. This negative reset
will also reduce the effective range of the controller by reducing the low end reset,
narrowing the reset span. If a zero minimum is required, adjust the LO STAT ΔP knob
until the controller just starts to open the damper, then back-off one-quarter turn and
verify zero airflow. (This is typically 2-1/2 knob rotations counter clockwise from the fully
clockwise position.)
After the “LO STAT ∆P” and “HI STAT ∆P” initial adjustments are made, cycle the
thermostat pressure a few times to settle the internal reset mechanisms and verify
settings. Fine-tune the settings if necessary. The thermostat pressure may be left at a
high pressure and the “G” port cap may be removed and replaced to cycle the reset
mechanism.
RESET START Setting is factory set at 8.0 psig. This is the lowest thermostat pressure that the LO
STAT ∆P airflow will begin to reset towards the HI STAT ∆P airflow. To change the RESET START
setting; regulate thermostat pressure to the “T” port to the desired reset start point pressure, adjust
RESET START adjustment until pressure at the “G” port is slightly higher than 0 psig, i.e., 0.1 psig.
NOTE:
For Dual Duct Units the reset start must be adjusted to 3.0 psig. ON THE HEATING
SIDE ONLY
The “G” port taps into the controller’s internal reset chamber, which always starts at 0
psig. The RESET START adjustment is a positive bias adjustment that sets the desired
thermostat start point to the controller’s internal reset start point of 0 psig.
RESET SPAN Setting is factory set at 5.0 psig. This is the required change in thermostat pressure
that the controller will reset between the LO STAT ∆P setting and the HI STAT ∆P setting. To change
the RESET SPAN setting; adjust RESET SPAN adjustment until pressure at the “G” port equals the
desired reset span pressure. (Do Not Adjust)
NOTE:
The “G” port taps into the controller’s internal reset chamber, which will always be
at a pressure between 0 psig and the RESET SPAN pressure.

Form #: SIDOM.4 Page | 17 Revised: 03/19
Figure 9 –Reset Cycle for CSC 3011 Control
Preventative Maintenance
1. Inspect pneumatic tubing for loose connections or leaks.
2. Clean out pneumatic line filters regularly according to manufacturer’s recommendations.
Pneumatic Control Troubleshooting
Table 3 –Pneumatic Control Troubleshooting
PROBLEM
PROBABLE CAUSE
Controller does not reset to maximum or minimum set point during
balance procedure.
Balancer is using the thermostat for control signal. An artificial
signal must be provided in place of the thermostat.
Controller does not reset to maximum or minimum set point during
operation.
Thermostat is not demanding maximum or minimum air volume.
Main air pressure at the controller is less than 15 psi.
Pneumatic actuator does not stroke fully.
Leak in pneumatic line between the controller and the actuator.
Main air pressure at the controller is less than 15 psi. Leak in the
diaphragm.
Air valve stays in wide open position.
Inlet airflow sensor is blocked by an obstruction (plastic bag, etc.).
Insufficient supply air in the inlet duct.
NOTE: Always check:
●Main air pressure (15 psi to 25 psi) at the controller.
● Proper thermostat signal and logic (Direct/Reverse Acting).
● Disconnected or kinked pneumatic lines to the controller
● Blocked inlet airflow sensor or insufficient primary supply air.
● Quality of compressed air (oil or water in lines).
● Leaks in the actuator diaphragm.
● Mechanical linkage of the actuator/air valve.

Form #: SIDOM.4 Page | 18 Revised: 03/19
Analog Controls Installation and Balancing Procedures
The Analog Electronic Control System is a pressure independent volume reset control that uses a
KMC CSP-4702 controller-actuator (see Figure 10).
Figure 10 –Analog Controller CSP 4702
Adjustments for the minimum and maximum airflow settings are made at the thermostat. The
thermostat (CTE-5202) operates on a 16 VDC power supply from the CSP 4702 controller and
outputs a 0 to 10 VDC signal on the AO1 and AO2 terminals. AO1 is used as the cooling output
and AO2 is used as the heating output.
Thermostat Installation
For proper operation, mount the thermostat on an interior wall. Do not mount the thermostat in a
location that will cause it to be affected by direct sunlight or other heat or cold sources. The
thermostat should be clear of all obstructions so it can properly sense the room temperature.
Complete rough-in wiring at each location prior to thermostat installation. Cable insulation must meet
local building codes.
1. Remove thermostat cover. If the thermostat is locked on the back plate, turn the hex screws in
the two outermost holes on the bottom of the cover CLOCKWISE into the back plate until they
just clear the cover. Do not remove these screws completely. Swing the thermostat up and
away from the back plate to remove it.
2. Route the wires through the opening in the back plate.
3. Install the back plate directly to the junction box using the screws supplied with the thermostat.
Verify the hex screws used for securing the cover are located at the bottom before installing.

Form #: SIDOM.4 Page | 19 Revised: 03/19
4. Connect the wires to the terminal block. Refer to the wiring diagram located inside the control
enclosure of each unit which shows the wiring terminations. The wiring schematic can also be
found on the control sequence submittal on the Krueger website.
5. Replace the thermostat cover. Turn the two hex screws COUNTER CLOCKWISE until they are
flush with the bottom of the cover to secure it to the back plate.
Programming Thermostat
1. The thermostat has three sequences that are selectable from the display screen. To access the
configuration menu on the thermostat, press and hold the Up and Down arrows simultaneously
for 10 seconds until the display starts flashing “LIMITS”. Use the Up and Down arrows to scroll
between the different menu options or set a specific value. Use the Setpoint button to select a
menu or set a value.
2. To set the minimum and maximum airflow limits, use AO1 Min and AO1 Max or AO2 Min and
AO2 Max. Use the following Table 4 to determine the corresponding thermostat setting for the
CFM per inlet size.
3. For details on how to program the thermostat for each control sequence refer to the specific
control sequence submittal. The control sequence submittals can be on the Krueger Website:
www.krueger-hvac.com.
NOTE: Default Settings are as follows:
AO1 –MIN=0, MAX=12, AUX=0
AO2 –MIN=0, MAX=12
DEAD BD (deadband) = 2° F
SETBACK (standby/unoccupied setback) = 2° F
PROP BD (loop proportional band) = 2° F
Rm OFST (room temperature offset) = 0
CNG OVR (changeover temperature) = 77° F
ITIME (loop integral time) = 30 minutes

Form #: SIDOM.4 Page | 20 Revised: 03/19
AO1 &
AO2
Setting
Sensor
Signal
"W.G.
CFMs Per Inlet Size
4
5
6
7
8
9
10
12
14
16
20
22
0-2
0.00
0
0
0
0
0
0
0
0
0
0
0
0
2.1
0.03
36
57
81
111
145
183
226
326
444
580
315
1107
2.2
0.05
51
80
115
157
205
259
320
461
627
820
445
1565
2.3
0.08
63
98
141
192
251
318
392
565
768
1004
545
1917
2.4
0.10
72
113
163
222
290
367
453
652
887
1159
630
2214
2.5
0.13
81
127
182
248
324
410
506
729
992
1296
704
2475
2.6
0.15
89
139
200
272
355
449
555
798
1087
1420
771
2711
2.7
0.18
96
150
216
293
383
485
599
862
1174
1533
833
2928
2.8
0.20
102
160
231
314
410
519
640
922
1255
1639
891
3130
2.9
0.23
109
170
244
333
435
550
679
978
1331
1739
945
3320
3
0.25
115
179
258
351
458
580
716
1031
1403
1833
996
3500
3.1
0.28
120
188
270
368
481
608
751
1081
1472
1922
1045
3671
3.2
0.30
125
196
282
384
502
635
784
1129
1537
2008
1091
3834
3.3
0.33
131
204
294
400
522
661
816
1175
1600
2089
1136
3991
3.4
0.35
136
212
305
415
542
686
847
1220
1660
2168
1178
4141
3.5
0.38
140
219
316
430
561
710
877
1263
1718
2244
1220
4287
3.6
0.40
145
226
326
444
580
733
905
1304
1775
2318
1260
4427
3.7
0.43
149
233
336
457
597
756
933
1344
1829
2389
1299
4563
3.8
0.45
154
240
346
471
615
778
960
1383
1882
2459
1336
4696
3.9
0.48
158
247
355
484
632
799
987
1421
1934
2526
1373
4824
4
0.50
162
253
364
496
648
820
1012
1458
1984
2592
1408
4950
4.1
0.53
166
259
373
508
664
840
1037
1494
2033
2656
1443
5072
4.2
0.55
170
265
382
520
680
860
1062
1529
2081
2718
1477
5191
4.3
0.58
174
271
391
532
695
879
1086
1563
2128
2779
1510
5308
4.4
0.60
177
277
399
543
710
898
1109
1597
2174
2839
1543
5422
4.5
0.63
181
283
407
555
724
917
1132
1630
2218
2898
1575
5534
4.6
0.65
185
289
416
566
739
935
1154
1662
2262
2955
1606
5644
4.7
0.68
188
294
423
576
753
953
1176
1694
2305
3011
1636
5751
4.8
0.70
192
299
431
587
767
970
1198
1725
2348
3067
1666
5857
4.9
0.73
195
305
439
597
780
987
1219
1755
2389
3121
1696
5960
5
0.75
198
310
446
608
794
1004
1240
1785
2430
3174
1725
6062
5.1
0.78
202
315
454
618
807
1021
1260
1815
2470
3227
1753
6162
5.2
0.80
205
320
461
627
820
1037
1281
1844
2510
3278
1782
6261
5.3
0.83
208
325
468
637
832
1053
1300
1873
2549
3329
1809
6358
5.4
0.85
211
330
475
647
845
1069
1320
1901
2587
3379
1836
6454
5.5
0.88
214
335
482
656
857
1085
1339
1929
2625
3428
1863
6548
5.6
0.90
217
340
489
666
869
1100
1358
1956
2662
3477
1890
6641
5.7
0.93
220
344
496
675
881
1115
1377
1983
2699
3525
1916
6732
5.8
0.95
223
349
502
684
893
1130
1395
2009
2735
3572
1941
6823
5.9
0.98
226
353
509
693
905
1145
1414
2036
2771
3619
1967
6912
6
1.00
229
358
515
702
916
1160
1432
2062
2806
3665
1992
7000
Table 4: CFM Chart for setting min and max values on thermostat