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KRUEGER QFC User Manual

KRUEGER QFC
50 pages
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WWW.KRUEGER-HVAC.COM
Models: KLPS, KLPS-D, KLPP, KQFS,
KQFS-FA, KQFP, QFC, QFV
FAN POWERED
TERMINAL UNITS
INSTALLATION, START-UP, AND
SERVICE INSTRUCTIONS FOR
KRUEGER TERMINAL UNITS
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KRUEGER QFC Specifications

General IconGeneral
BrandKRUEGER
ModelQFC
CategoryFan
LanguageEnglish

Summary

PRE-INSTALLATION

GENERAL

Overview of fan powered terminal units and their capabilities.

CONTROL OFFERINGS

Describes available control options for the units.

STORAGE AND HANDLING

Guidelines for proper storage and handling of units to prevent damage.

UNIT INSTALLATION PREPARATION

INITIAL INSPECTION

Checking units for damage upon receipt and removing packaging material.

SERVICE ACCESS

Providing adequate clearance for unit maintenance and servicing.

CODES AND SUSPENSION

Compliance with codes and methods for unit suspension during installation.

WARRANTY AND CONTROL OPTIONS

Information on the unit's warranty and available control options.

CONTROL SYSTEM CONFIGURATIONS

ANALOG ELECTRONIC CONTROLS

Pressure independent control packages with various features.

DIRECT DIGITAL CONTROLS (By Others)

Control sequences for field-supplied controls from various manufacturers.

PNEUMATIC CONTROLS

Pressure independent control packages for units with or without heat.

NO CONTROL UNITS

Units supplied without factory-installed controls, with standard sensors.

INSTALLATION PROCEDURES

SELECT LOCATION

Guidance on choosing an appropriate installation location for fan powered boxes.

POSITION UNIT

Instructions for safely raising and positioning the unit for installation.

DUCT AND POWER CONNECTIONS

MAKE DUCT CONNECTIONS

Steps for connecting supply and discharge ductwork to the fan powered box.

POWER WIRING

Guidelines for compliant and safe electrical wiring of the unit.

SYSTEM SETUP AND CALIBRATION

GENERAL SETUP

Procedures for preparing the system for balancing and calibration.

SET POINTS

Information on setting maximum and minimum airflow set points.

AIRFLOW SET POINT ADJUSTMENT

Steps for adjusting airflow set points using the inlet airflow sensor.

START-UP PROCEDURES

GENERAL CHECKLIST

Items to check before balancing the system, including fan operation and filters.

INITIAL START-UP STEPS

Critical steps to follow for safe and proper unit operation and servicing.

BALANCING FAN TERMINALS

BALANCING SERIES FLOW UNITS

Procedure for balancing series flow units by setting fan and VAV damper flow.

SETTING FAN AIRFLOW

Steps for setting fan airflow, including disabling heat and checking fan rotation.

ADJUSTMENT OF SET POINTS

How to set primary air damper minimum and maximum airflow levels.

FAN SPEED AND AIRFLOW CONTROL

SPEED CONTROLLER

Information on adjusting the SCR speed controller for fan speed.

SETTING FAN AIR FLOW WITH ECM MOTORS

Procedures for setting fan airflow using ECM motors and various control options.

PNEUMATIC CONTROL SYSTEMS

SINGLE FUNCTION PNEUMATIC CONTROLLER SEQUENCES

Balancing procedures for units with single-function pneumatic controllers.

MULTI-FUNCTION RESET VOLUME CONTROLLER

Information on the multi-function reset volume controller and its use.

BALANCING SUPPLY OUTLETS AND FAN DISCHARGE

Steps for balancing supply outlets and unit fan discharge using control methods.

BALANCING PRIMARY AIR VOLUME

Procedure for measuring and adjusting primary air volume using a manometer.

TROUBLESHOOTING PNEUMATIC CONTROLS

PNEUMATIC CONTROL ISSUES

Common problems and likely causes for pneumatic control system failures.

CHANGING CONTROL SEQUENCE LOGIC

Steps for changing control logic and damper positions for different sequences.

ANALOG CONTROL SYSTEMS

INSTALLATION AND BALANCING PROCEDURES

Steps for installing and balancing analog electronic control systems.

THERMOSTAT INSTALLATION

Guidelines for mounting and wiring the thermostat for optimal performance.

PROGRAMMING THERMOSTAT

Instructions for configuring thermostat sequences and setting airflow limits.

CONTROL AND MOTOR TROUBLESHOOTING

ANALOG CONTROL TROUBLESHOOTING

Guide for diagnosing issues in analog control systems.

WATER VALVE INSTALLATION

Instructions for field-supplying and connecting hot water valves to the controller.

FAN MOTOR AND WHEEL MAINTENANCE

Information on accessing and maintaining the fan motor and wheel assembly.

WIRING ISSUES

Steps for checking and verifying motor wiring connections.

FAN MOTOR TROUBLESHOOTING

FAN MOTOR DOES NOT RUN

Checklist for diagnosing why the fan motor is not operating.

FAN MOTOR RUNS, EXCESSIVE NOISE

Causes and solutions for excessive noise when the fan motor is running.

IF REPAIR OR REPLACEMENT IS REQUIRED

Procedures for removing and servicing the fan motor and wheel assembly.

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