KRUEGER QFV User Manual

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

KRUEGER QFV Specifications

General

Brand	KRUEGER
Model	QFV
Category	Fan
Language	English

Summary

Safety Note

Pre-Installation Overview

General Description

Describes the purpose and features of Krueger fan powered boxes (VAV).

Control Offerings

Details the available control options for Krueger terminal units.

Pre-Installation Procedures

Initial Inspection

Instructions for checking terminal units for damage upon receipt from shipping.

Control Options Overview

Details various factory-mounted controls for air volume regulation.

Analog Electronic Controls

Control Package Details

Pneumatic Controls

Control Arrangements

Installation Guide

Step 1 - Install Fan-Powered Box

Provides detailed steps for installing the fan-powered box.

Select Location

Position Unit

Step 2 - Make Duct Connections

Step 3 - Power Wiring

Step 4 - System Setup and Calibration

General Setup Procedures

Set Points Adjustment

Field Airflow Set Point Adjustment

Detailed steps for field adjusting airflow set points using the sensor.

System Calibration of the Inlet Airflow Sensor

Start-Up Procedures

General Start-Up Checks

Initial Start-Up Procedures

Step-by-step instructions for safely starting up the unit for the first time.

Balancing Krueger Fan Terminals

Balancing Series Flow Units

Setting Fan Airflow

Steps to temporarily disable heat functions and set fan airflow.

Adjustment of Set Points

Field Adjustment of Airflow Set Points

Procedure for adjusting airflow set points based on sensor readings.

Balancing Parallel Flow Units

Setting Fan Airflow for Parallel Units

Steps to disable heat functions and set fan airflow for parallel units.

Setting of VAV (Primary) Airflow

Procedure for setting the primary airflow for VAV control.

Adjustment of Set Points for Parallel Units

Field Adjustment of Minimum and Maximum Airflow Set Points

Speed Controller Operation

To Increase the Fan Speed (RPM)

To Decrease the Fan Speed (RPM)

Setting Fan Airflow with ECM Motors

Manual Speed Control (Control Option 6)

Remote Speed Control, 0-10Vdc (Control Option 7)

Remote Speed Control, 2-10Vdc (Control Option 8)

Pneumatic Controls - General

General Pneumatic Control Overview

Single Function Controller Sequences

Units with Single-Function Controllers

Troubleshooting Pneumatic Controls

Analog Controls

Installation and Balancing Procedures

Steps for installing and balancing analog electronic control systems.

Thermostat Installation

Programming Thermostat

Analog Control Troubleshooting

Controller and Wiring Checks

Rotation and Signal Issues

Fan Motor Troubleshooting

If Fan Motor Runs, Excessive Noise

Troubleshooting steps for excessive noise during fan motor operation.

If Repair or Replacement is Required

Procedure for removing and replacing the fan motor and wheel assembly.

Fan Motor Wiring

If Fan Motor Does Not Run

Troubleshooting steps when the fan motor fails to operate.