Oriflow Rhino User Manual

Operating Instructions for

Rhino

Duct Leakage Tester

(Metric)

Table of Contents

Introduction

Introduction ……………………………………….…….. 2

Safety Precautions

Safety Precautions ………………………………….…. 2

Prior to Testing

System Preparation …………………….………………. 3 Power Requirements …………………………………... 3 Extension Cord Requirements ………………………... 4 Flex-Duct Length ………………………………………... 4 Determining Maximum Allowable Leakage ….……... 4 Determining Which Orifice Plate to Use ……………... 5 - 7

Duct Leakage Test Setup and Procedure

Install Orifice Plate and Upper Tube Section………… 8 - 9 Connect Flexible Duct to Orifice Tube ……………….. 10 Connect Flexible Duct to Duct System ………………. 10 System Test Pressure Connection …………………… 11 Duct Leakage Test Setup (SUPPLY) ………………… 12 Duct Leakage Test Setup (RETURN/EXHAUST) ...….. 13 Inlet Transition Required for Return/Exhaust Testing . 14 Zeroing Pressure Gauges ……………………………… 15 Avoiding Over-Pressurization ………………………… 16 Obtaining System Test Pressure ……………………… 16 - 17 Determining Leakage Rate……………………………… 17 - 19

Troubleshooting

Zero reading on “DUCT SYSTEM” gauge ………….... 19

Zero reading on “ORIFICE PLATE” gauge …………….. 20 Can’t obtain system test pressure ……………………… 21

“ORIFICE PLATE” gauge reading maxed out………...... 21

1

Introduction

These operating instructions are for ORIFLOW model RHINO air leakage tester. Take pride in knowing that you have purchased the best air leakage tester on the market. It is no secret that Oriflow manufactures the highest quality testers, and has unparalleled customer service and technical support.

The orifice plates available for your duct leakage tester are constructed from lasercut 3.2 mm stainless steel and do not require recalibration for 10 years. Note the authority having jurisdiction may override this requirement, and if so, Oriflow has very reasonable rates for calibrating orifice plates manufactured by Oriflow.

Safety Precautions

Before operating your tester, read the following safety precautions:

 DO NOT operate the tester in the rain,

 DO NOT operate the tester while it is near or in water,

 DO NOT operate the tester with a damaged electrical cord or plug,

 DO NOT remove the inlet safety screen,

 DO NOT touch the blower wheel when the unit is plugged in,

 DO NOT look into the discharge end of the tester when the unit is plugged in,

 DO NOT use the tester as a ladder or step stool,

 DO NOT allow children near the tester,

 DO use an extension cord of the proper gauge (see Table 2),

 DO use the proper voltage and line frequency listed on the motor nameplate,

 DO lock the caster when the tester is positioned horizontally,

 DO use the tester on level ground,

 DO secure the tester when transporting it,

 DO wear proper hearing protection, safety glasses and work gloves,

 DO seek assistance when lifting the tester (e.g., loading onto truck, going up

or down stairs).

2

Prior to Testing

System Preparation

Cap off all ends of system using clear plastic and duct tape or sheetmetal duct end caps. Make sure you test the part of the duct system that leakage testing is required. Usually, this is from the system fan up to, but not including, the VAV boxes (terminal units). Refer to the engineer's specifications and all applicable codes and test standards.

Power Requirements

Do you have an adequate power supply for your tester (see Table 1)?

Table 1 – Tester Amp Draw

Tester Model

Rhino

Flow

Voltage

208 Slide Gate 3 13

208 VFD 3 14

230 VFD 1 21

230 Slide Gate 3 12

230 VFD 3 13

380 Slide Gate 3 7

380 VFD 3 8

460 Slide Gate 3 6

460 VFD 3 7

Control

Option

Phase

Full Load

Amps

3

Extension Cord Requirements

If you need an extension cord, is it the proper gauge? See Table 2 below for

extension cord requirements.

Table 2 – Required Extension Cord Wire Gauge

Rhino Model

Flow

Control

Option

VFD 230 1

Slide Gate 230 3

VFD 230 3

Slide Gate 380 3

VFD 380 3

Slide Gate 460 3

VFD 460 3

Flex-Duct Length

Voltage Phase

Cord Length

Extension

(meters)

3 to 15 10

15 to 30 10

3 to 15 14

15 to 30 14

3 to 15 14

15 to 30 14

3 to 15 14

15 to 30 14

3 to 15 14

15 to 30 14

3 to 15 14

15 to 30 14

3 to 15 14

15 to 30 14

Gauge

Wire

Make sure you have enough flexible-duct with your tester for the job. Each tester includes 3.8 m, which is enough for most applications. Extra lengths of flexible-duct are available at www.oriflow.com/products.

Determining Maximum Allowable Leakage

To determine the maximum allowable leakage for the project, use ORIFLOW’s free online programs to make these calculations (www.oriflow.com/programs).

Calculations are done for either of the two typical specifications: percentage of system flow, or leakage class. If the specification uses leakage class, you will need to calculate the total duct system surface area. Oriflow has a free Adobe form available to our customers that will calculate duct surface area given the duct shape, dimensions and length.

4

Determining Which Orifice Plate to Use

After determining the allowable leakage at the system test pressure, refer to the

following tables for the capacities of each orifice plate available for the RHINO model

tester. Make sure you have an orifice plate that can measure the maximum allowable leakage. The proper plate is the one where the maximum allowable leakage falls between the minimum and maximum leakage at the system static pressure. For example, if you are testing a system at 2500 Pa pressure and the maximum allowable leakage is 283 L/s, you will need a 125 mm orifice plate since the 125 mm plate can be used for up to 380 L/s of leakage (see Table 7).

It is a good idea to have the next larger orifice plate size since it is common for duct systems to leak more than the maximum allowable. Smaller diameter plates are use when leakage is relatively low.

Table 3 – Tester Capacities using the 25 mm Orifice Plate

System Static

Pressure

(Pa)

Minimum Leakage*

(L/s)

Maximum

Leakage

(L/s)

500 4 21 1000 4 19 1500 4 18 2000 4 17 2500 4 14 3000 4 12 3500 4 9 4000 4 6

5

Determining Which Orifice Plate to Use (continued)

Table 4 – Tester Capacities using the 50 mm Orifice Plate

System Static

Pressure

(Pa)

500 17 87 1000 17 78 1500 17 73 2000 17 66 2500 17 57 3000 17 47 3500 17 35 4000 17 26

Table 5 – Tester Capacities using the 75 mm Orifice Plate

System Static

Pressure

(Pa)

Minimum Leakage*

(L/s)

Minimum Leakage*

(L/s)

Maximum

Leakage

(L/s)

Maximum

Leakage

(L/s)

500 40 195 1000 40 180 1500 40 165 2000 40 145 2500 40 130 3000 40 105 3500 40 80 4000 40 60

Table 6 – Tester Capacities using the 100 mm Orifice Plate

System Static

Pressure

(Pa)

Minimum Leakage*

(L/s)

Maximum

Leakage

(L/s)

500 75 370 1000 75 340 1500 75 310 2000 75 280 2500 75 245 3000 75 195 3500 75 155 4000 75 105

6

Oriflow Rhino User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual