Greenheck IG-108 User Manual

Indirect Gas-Fired

Technical Guide

May

2005

®

2

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

Table of Contents

Model Name Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Technical Guide: Heat Exchange Material Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Technical Guide: S-tube Furnace Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Model IG or IGX? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Model IG Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Model IG Unit Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Model IG Roof Curbs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Model IG Evaporative Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Model IGX Performance Data & Motor Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Model IGX Unit Dimensions and Weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12

Model IGX Roof Curbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Model IGX Evaporative Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Model IGX DX and Chilled Water Cooling Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Furnace Venting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-17

Weatherhood & Filter Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Diffuser Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Make-Up Air Furnace and Temperature Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Technical Guide: Furnace Control and Turndown Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Make-Up Air - Air Flow and Evaporative Cooling Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Industrial Make-Up Air Temperature Control Recommendation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

TSCP Industrial Type Remote Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Commercial Kitchen Make-Up Air Temperature Control Recommendation . . . . . . . . . . . . . . . . . . . . . . . . 25

Make-Up Air Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Heating & Ventilating Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-30

IG Typical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

IGX Typical Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

IG-HV Typical Specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

IGX-HV Typical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Make-Up Air Product Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Indirect Gas Furnace is ETL and cETL listed to ANSI Z83.8-2002

Indirect Gas Units are listed to UL1995.

Both are harmonized standards between USA and Canada

Model Name Description

IGX–115–H22

Model (X indicates

modular construction)

Blower Quantity

Blower Size

Housing Size

®

3

Technical Guide: Heat Exchanger Material Selection

One important consideration when selecting an indirect gas-fired furnace for a Make-Up Air or Heating & Ventilating application is the heat exchanger material. The conditions created inside of the heat exchanger by the combustion process are the greatest factor limiting the life of the furnace. Selecting the proper heat exchanger material can greatly reduce the effects of these conditions and yield a long furnace life. To select the best heat exchanger material, the application and climate should be considered.

Corrosion and Thermal Expansion:

The first factor limiting the life of the heat exchanger is the by-products of the combustion process. During combustion process, water, nitrogen and sulfur form inside of the heat exchanger, creating a highly corrosive environment. The second factor is the high temperature of the heat exchanger. Like any material, a heat exchanger expands and contracts with changes in temperature. The expansion and contraction leads to high stresses in the heat exchanger. The corrosive conditions, combined with high stress can reduce furnace life if the wrong heat exchanger material is selected.

Available Materials:

Greenheck offers two material options for heat exchangers: aluminized steel and stainless steel. Both are selected for the specific application of indirect gasfired heat exchangers, but have different strengths.

The first material option is aluminized steel; steel that has been hot dipped in a molten aluminum bath. The result is a triple layer of protection on the inside and outside of the heat exchanger. The first protective layer is an aluminum coating that is the first line of defense against the corrosive conditions. Between the aluminum and the steel is a second protective alloy layer. As the outer aluminum corrodes, aluminum oxide forms and provides a third layer of protection. In order for the steel to begin corrosion, condensation must penetrate the aluminum oxide, aluminum and the alloy.

Stainless steel is the second available material option. Stainless gets its corrosive resistive properties from its chromium content. As stainless is exposed to a corrosive environment the chromium oxidizes and forms a single protective layer over the steel that slows corrosion.

Both materials are very effective at resisting corrosion, but stainless holds up better to the extreme temperatures found in some common applications. As aluminized steel approaches 1100ºF the aluminum begins scaling, exposing the steel. This temperature corresponds to an air stream temperature rise of approximately 70ºF. However, at temperatures below the aluminized steel scaling point, the aluminized steel tends to outperform stainless steel with respect to

heat stress cracking. From this information, Greenheck recommends aluminized steel for temperature rises of 60ºF or less and stainless for temperature rises greater than 60ºF.

Application and Climate Considerations:

Other than a corrosive environment, the air stream temperature rise is the largest factor driving heat exchanger material selection. With this in mind, we will consider two distinct applications for indirect gasfired heaters: Heating & Ventilating and Make-Up Air. From this, guidelines can be created to properly select the heat exchanger material.

Most Heating & Ventilating applications use a small amount of outside air (030%) which is mixed with a large amount of recirculated room air (70-100%). The relatively warm mixed air typically requires a temperature rise less than 50ºF, as illustrated in the table to the right. As a result, aluminized steel heat exchangers are recommended for H&V applications.

Make-up air applications are 100% outside air. As a result, the required temperature rise of the heat exchanger depends heavily on the climate. In mild climates, with outdoor winter design temperatures above 10ºF, a temperature rise of 60ºF or less is typical and aluminized steel is recommended (based upon a 70ºF discharge temperature). In colder climates with outdoor winter design temperatures less than 10ºF, the air stream temperature rise often exceed 60ºF. When this occurs, stainless steel is recommended.

Summary:

For Heating & Ventilating applications and Make-Up Air applications in mild climates, where the air stream temperature rise is less than 60ºF, aluminized steel will offer long furnace life and minimize the chance of heat exchanger stress cracking. For Make-up Air Applications in cold climates, where air stream temperature rise exceeds 60ºF, stainless steel is recommended.

Winter Design

Temp.

Outside

Air

Percentage

Mixed

Air

Temp.

Required

Temp.

Rise*

Recommended

Heat Exchanger

Material

-20 15 57 34 Aluminized

-20 30 43 47 Aluminized 0 15 60 31 Aluminized 0 30 49 41 Aluminized

30 15 64 26 Aluminized 30 30 58 32 Aluminized

* Assumes 70ºF space temperature and 90ºF discharge temperature

Winter Design

Temp.

Required

Temp.

Rise*

Recommended

Heat Exchanger

Material

-10 80 Stainless 0 70 Stainless

10 60 Aluminized 20 50 Aluminized 30 40 Aluminized

*Assumes a discharge temperature of 70ºF

®

4

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

The Problem

Many of today’s indirect gas-fired make-up furnace specifications are based on yesterday’s technology and often call for unneeded components that add unneeded cost. Yesterday’s furnaces often featured a clamshell style heat exchanger, which due to inherent design problems resulted in condensation on the burner and in the housing. To manage the condensation and prevent corrosion, most clamshell specifications call for stainless steel burners and drip pans. Greenheck’s s-tube style furnace first limits condensation, then manages any condensation that does occur in a way that eliminates the need for stainless steel burners and drip pans.

The largest inherent problem with a clamshell furnace is the vertical heat exchanger configuration. The burners fire vertically up into the heat exchanger. The hot combustion gases travel up the straight single pass heat exchangers and collect at the top where they are vented. Because of the vertical configuration, any condensation that develops in the heat exchanger falls onto the burner and runs into the furnace housing. The condensation contains by-products of combustion, which are highly corrosive and destroy the furnace. To protect the furnace section and maintain an acceptable life, clamshell furnaces include costly stainless steel burners and drip pans.

Many clamshell furnaces are gravity vented, which is another problem that makes stainless steel burners and drip pans necessary. Gravity venting means that the combustion gases naturally vent through a stack, like smoke in a fireplace naturally escapes through a chimney. Gravity vented furnace efficiency is dependent on the outside conditions. Wind blowing over the stack can push the efficiency too high, resulting in excessive condensation. Even more condensation will develop when the furnace shuts down. Any combustion gases remaining in the heat exchanger will cool, condense and run down onto the burner and into the housing.

Clamshell furnaces also present a significant design limitation. The manifold, burners and drip pan are located under the heat exchanger, preventing a downblast discharge from the furnace section. If your application calls for a downblast discharge, an additional downturned section is required which increases the unit footprint and cost.

The S-tube Solution

Greenheck’s furnace design features horizontally firing burners and power venting with post purge cycle which together provide flexibility, maximum heat exchanger life and make stainless steel burners unnecessary and drip pans obsolete.

Power venting maintains optimum combustion levels, helping prevent the furnace efficiency from reaching the level where condensation begins. The combustion blower also enables a post purge cycle. When the furnace shuts down, the combustion blower continues to run, venting any combustion gases and drying the heat exchanger. Unless removed, this combination of gases and moisture would attack the inside of the heat exchanger and promote corrosion.

Greenheck’s horizontally firing heat exchanger means that the burners, manifold and gas train are located on the side of the furnace, rather than below it. And unlike a clamshell furnace, there is no drain pan under the furnace. With the bottom of the furnace free and clear, a downblast discharge is easily integrated into the furnace section. Unlike a clamshell style furnace, Greenheck furnace offers you the same compact design, whether your application calls for a horizontal or downblast discharge. The horizontally firing heat exchanger also stops condensation from dripping onto the burners and into the housing. Any condensation will remain in the corrosion resistant heat exchanger until it is power vented to the outdoors.

Summary

When your application calls for indirect gas-fired make-up air, be sure to specify the latest technology. Horizontally firing burners and s-tube heat exchangers with power venting and post purge cycle guarantee a long furnace life in the most compact and flexible unit configuration available.

Technical Guide: S-Tube Furnace Design

®

5

• Stainless steel or aluminized heat exchanger

• 80% thermal efficiency

• Power vented furnace with post purge cycle

• Double wall furnace section

• G90 galvanized steel housing

• Factory wired control center

• Single point power connection

• Optional painted finish

• Optional separated combustion for indoor installations

• Optional evaporative cooling

• Optional mixing box with controls

Model IG Model IGX

The Model IG has a less complex design and therefore typically offers the most economical solutions. The information below identifies application parameters for the IG and IGX.

Model IG Model IGX

• Airflow up to 7,000 CFM • Airflow up to 23,000 CFM

• Heat up to 400 MBH • Heating up to 2,400 MBH

• Single speed fan • Two speed fan option

• Variable volume fan option

• DX and chilled water cooling options

• Occupied / Unoccupied control option (IGX-HV Only)

Model IG or IGX?

Greenheck offers two models of indirect gas-fired make-up air and heating units. Both IG and IGX models include the following features and options:

®

6

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

Model Housing

MBH (input)

CFM RPM/BHP

Total Static Pressure in inches of WG

Min. Max 0.75 1.00 1.25 1.50 1.75

IG-108 H10 75 125

800

RPM 1109 1216 1311 1399 -

BHP 0.26 0.31 0.35 0.40 -

1,200

RPM 1347 1445 1530 - -

BHP 0.59 0.68 0.75 - -

IG-109

H10 75 175 1,400

RPM 998 1128 1245 1352 1456

BHP 0.41 0.48 0.57 0.67 0.78

H20 75 250 2,400

RPM 1216 1306 1397 1484 1569

BHP 1.10 1.31 1.40 1.60 1.70

IG-110

H10 150 175

2,000

RPM 912 1013 1110 1199 -

H20 200 300 BHP 0.59 0.71 0.80 1.0 -

H30 325 400 3,000

RPM 1097 1172 1244 1315 1386

BHP 1.4 1.6 1.7 1.9 2.1

IG-112

H20 175 300 2,600

RPM 761 853 934 1009 -

BHP 0.7 0.9 1.0 1.2 -

H30 175 400 4,400

RPM 939 1006 1073 1137 1197

BHP 2.1 2.4 2.6 2.9 3.1

IG-115

H20 250 300 4,000

RPM 681 756 822 892 -

BHP 1.3 1.5 1.8 2.1 -

H30 250 400 7,000

RPM 889 943 994 1044 1093

BHP 4.2 4.6 5.0 5.5 5.9

Air Performance Data & Furnace Availability

Note: The air performance data shown does not include internal static pressure losses due to items such as filters, dampers and furnaces. For exact air performance data based on specific unit configuration, use the Greenheck CAPS selection program.

Model IG Performance Data

IG Maximum Motor Size

IG Pressure Loss Table

Maximum Motor Size by Fan Size

Housing 108 109 110 112 115

H10

3

⁄4 11⁄2 3- -

H20 -3355

H30 --357

1

⁄2

Housing Size CFM Housing

Louvered

Weatherhood

Aluminum Mesh

V-Bank Filters

Inlet Damper Furnace

Evaporative

Cooler

H10

1200 0.12 0.02 < 0.01 < 0.01 0.23 0.03

2400 0.25 0.10 0.03 0.01 0.90 0.12

3000 0.26 0.16 0.04 0.02 1.41 0.19

H20

1500 0.10 0.03 < 0.01 < 0.01 0.12 0.05

3000 0.26 0.10 0.03 0.01 0.50 0.19

4400 0.34 0.23 0.06 0.03 1.07 0.20

H30

3000 0.16 0.10 0.03 0.01 0.23 0.19

5000 0.23 0.29 0.08 0.03 0.65 0.26

7000 0.45 0.57 0.15 0.07 1.28 0.50

Note: The 3, 5, and 71⁄2 HP motors are not available with 115V supply power. The 71⁄2 HP motor is only available with 3 phase supply power.

®

7

A

36 in.

Weatherhood with Birdscreen (Optional)

All IG housing sizes are the same height.

Optional roof curb

G

JL

K

M

N

H

PR

T

S

Return Air

Opening

(Optional)

Downblast

Discharge

Opening

F

D

EC

B

Horizontal Discharge

Power Vent Exhaust

Supply Gas Connection

*Unit weights by housing based on largest furnace and motor size available.

Total Unit with Evap Cooling

Housing Total Unit Weight Dry Weight Wet Weight

H10 380 695 936 H20 845 990 1231 H30 1190 1415 1797

Model IG Approximate Unit Weight (lbs.)

Model IG Return Air or Downblast Discharge Dimensions

Model IG Horizontal Discharge Dimensions

Model IG Unit Base Unit Dimensions

Model IG Intake Dimensions

Housing V W X Y

H10 32.5

30.0 3.8 8.5H20

41.5

H30

Model IG Unit Dimensions

Filter Section Intake

All dimensions are shown in inches

Housing

A

Width

100% Outside Air Recirculation

Louvered

Weatherhood

Birdscreen

WeatherhoodNoWeatherhood

Louvered

WeatherhoodNoWeatherhood H10 84.7 99.0 73.1 101.3 89.8 43.5 H20 87.6 102.0 76.2 104.3 92.8

52.6

H30 96.6 111.0 85.2 113.3 101.9

Housing B C D E F

H10 43.6 30.2

21.0

1.8

5.0

H20

52.6 39.2 1.0

H30

Housing G

H J K L M N P R S T

100%

Outside

Air

Recirculation

H10 73.1 89.0 43.5 26.5 23.7

2.7 3.9 12.4

73.8

12.9

35.6 2.1

H20 76.2 92.0

52.6

29.5

32.7

76.7

44.6

2.1

H30 85.2 101.0 38.5 85.7 2.1

Base of Unit

VY

W

X

®

8

1.497

UNIT BASE PAN

0.500

1.652

1.500

WOOD NAILER

GPI CURB

SHEETMETAL SCREW

(BY OTHERS)

Sealant

Model IG Roof Curb Dimensions

Greenheck provides installation flexibility with multiple roof curb options that meet your needs. Whether for flat or pitched roofs, insulated or non-insulated decks, Greenheck curbs facilitate installation and provide weather tightness when roofed and flashed to the factory supplied roof curb 2 inch wood nailer. All curbs are manufactured with 18 gauge galvanized steel and may be shipped with, or in advance of the equipment. Roof curbs over 120 inches in length (70 inches for GPIP at 24 inches height) may ship knocked down for ease of installation.

Roof Curb Model Options Table for Model IG

GPI GPNS GPS GPIP

Roof Deck

Flat x x x Pitched x Insulated x x Non Insulated x x

Curb Construction

Tabbed & Riveted x Welded x x x Curb Height in inches 12, 16, 20, 24 8, 12 8, 12 12, 16, 20, 24

Model IG

Roof Curb Unit Detail

Model IG Roof Curbs

Housing

A

B

100% Outside Air Recirculation

H10 57.5 89.0 40.0

H20 60.5 92.0

49.0

H30 72.5 101.0

Model IG Roof Curb Dimensions

Model IG Supply Side Roof Curb Dimensions

Housing C D E F G H J K

H10 26.44 23.67 30.5 35.5

2.72 2 3.85 12.48H20 29.44

32.67

33.75 44

H30 38.44 42

Housing L M N P Q R S T

H10

12.89

35.55

17

36.5

2.32 2 2.4 2H20 44.55

45.5

H30 44.55

Model IG Return Side Roof Curb Dimensions

*Recommended roof openings.

Curb

Width

O.D.

E*

C

H

G

Curb Length O.D.

K

J

D

F*

2.25 in.

Roof Opening

Supply

Duct

Curb

Width

O.D.

N*

L

R

Q

Curb Length O.D.

T

S

M

P*

1.75 in.

Roof Opening

Return

Duct

B

Curb Width

O.D.

A

Curb Length O.D.

Return

Duct

Supply

Duct

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

®

9

Model IG Evaporative Cooler

Model IG Evaporative Cooling

Greenheck Evaporative Coolers include a galvanized steel housing with louvered intake, 2 in. aluminum mesh pre-filters, stainless steel evaporative media casing and drain pan. Evaporative cooling media shall be cellulose or fiberglass with a depth of 12 inches for approximate cooling effectiveness of 90%. Supply connection is field located through unit. Drain and overflow connections shall be piped through the side for easy installation. Equipment supports for mounting are optional. See Greenheck IOM for piping guidelines.

Model IG Total Unit Length with Evap

Drain

Connection

Overflow

Connection

Supply

Connection

FILTERS

Replacement

Media

Housing CFM 100% O.A.

Return Air

Unit

A B C D E F G Qty Size GFC P/N: Qty Size

H10 800 to 3,500 109.2 125.8 36.0 52.5 36.0 2.3 6.4 4.0 3.8 0.75 0.75 0.25 4 16x25x2 07451763

3 12x12x28.5

1 8x12x28.5

1 6x12x28.5

H20

800 to 3,500 112.2 128.8 36.0 52.5 36.0 2.3 6.4 4.0 3.8 0.75 0.75 0.25 4 16x25x2 07451763

3 12x12x28.5

1 8x12x28.5

1 6x12x28.5

3,501 to 7,000 112.2 128.8 36.0 68.6 36.0 2.3 6.4 4.0 3.8 0.75 0.75 0.25

2 16X25X2 07451763 5 12X12X28.5

4 16X20X2 07451437 1 6x12x28.5

H30

2,400 to 3,500 121.2 137.8 36.0 52.5 36.0 2.3 6.4 4.0 3.8 0.75 0.75 0.25 4 16x25x2 07451763

3 12x12x28.5

1 8x12x28.5

1 6x12x28.5

3,501 to 7,000 121.2 137.8 36.0 68.6 36.0 2.3 6.4 4.0 3.8 0.75 0.75 0.25

2 16X25X2 07451763 5 12X12X28.5

4 16X20X2 07451437 1 6x12x28.5

Typical Installation

Evaporative Cooler

Equipment Support

Curb

C

Louvered Intake

Pre-Filters

Stainless Steel Drain Pan

Evaporative Media

AB

Supply Connection Field Located

Overflow

Drain

D

G E

F

®

10

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

Hp1⁄41⁄23⁄4 111⁄2 2 21⁄2 3 5 71⁄2 10 15 20 25

Motor

Weight

16 20 22 36 42 45 67 69 75 110 115 203 268 350

Model IGX Motor Weights (lbs.)

Model Housing

MBH

CFM RPM/BHP

Total Static Pressure in inches of WG

Min. Max 0.75 1.00 1.25 1.50 1.75

IGX-108 H12 100 150

800

RPM 1109 1216 1311 1399 BHP 0.26 0.31 0.35 0.4 -

1,200

RPM 1347 1445 1530 - -

BHP 0.59 0.68 0.75 - -

IGX-109 H12 100 250

1,500

RPM 1014 1140 1255 1361 1460 BHP 0.45 0.54 0.63 0.73 0.84

2,400

RPM 1244 1329 1419 1503 1587

BHP 1.2 1.4 1.6 1.7 1.9

IGX-110 H12 100 250

2,000

RPM 0.995 1082 1166 1247 1325 BHP 0.93 1.1 1.2 1.4 1.5

3,000

RPM 1202 1275 1340 1401 1464

BHP 2.0 2.2 2.4 2.6 2.8

IGX-112 H22 150 600

2,600

RPM 761 853 934 1009 BHP 0.72 0.86 1.0 1.2 -

4,400

RPM 939 1006 1073 1137 1197

BHP 2.1 2.4 2.6 2.9 3.1

IGX-115 H22 150 600 4,000

RPM 741 808 871 931 986

BHP 2.0 2.3 2.6 2.9 3.2

IGX-118 H32 300 1,200

7,000

RPM 627 685 738 790 839

BHP 2.5 2.8 3.2 3.6 4.0

10,000

RPM 759 805 849 891 933

BHP 5.5 6.1 6.6 7.1 7.7

IGX-120 H32 300 1,200

10,000

RPM 590 634 678 723 765

BHP 4.0 4.5 5.0 5.6 6.1

15,000

RPM 763 795 829 861 892

BHP 10.9 11.6 12.3 13.1 13.8

IGX-122 H35 800 2,400

15,000

RPM 605 637 667 698 727

BHP 8.3 8.9 9.6 10.4 11.1

19,000

RPM 720 746 771 796 821

BHP 15.2 16.1 17.0 17.8 18.6

IGX-125 H35 800 2,400

19,000

RPM 563 594 625 655 683

BHP 9.8 10.7 11.7 12.8 13.8

23,000

RPM 643 671 697 723 748

BHP 15.9 16.9 18 19.2 20.4

Air Performance Data & Furnace Availability

Model IGX Pressure Loss Table

Note: The air performance data shown does not include internal static pressure losses due to items such as filters, dampers, cooling and furnaces. For exact air performance data based on specific unit configuration, use the Greenheck CAPS selection program.

Model IGX Performance Data

Housing

Size

CFM Housing

Louvered

Weatherhood

Aluminum

Mesh V-Bank

Inlet

Damper

Furnace

Evaporative

Cooler

H12

1200 0.12 0.04 0.02 0.01 0.04 0.10

2500 0.27 0.15 0.07 0.05 0.05 0.43

3500 0.35 0.30 0.13 0.10 0.07 0.84

H22

3000 0.16 0.08 0.02 0.02 0.04 0.22

4000 0.28 0.15 0.04 0.04 0.04 0.40

6000 0.33 0.34 0.09 0.09 0.09 0.90

H32

7000 0.26 0.26 0.03 0.06 0.11 0.42

10000 0.27 0.53 0.06 0.11 0.23 0.86

14000 0.54 1.03 0.12 0.22 0.45 1.69

H35

15000 0.40 0.03* 0.09 0.11 0.84 0.35

19000 0.39 0.05* 0.14 0.17 1.35 0.57

23000 0.57 0.08* 0.21 0.25 1.98 0.83

*The louvered weatherhood is not available on the IGX-H35. Weatherhood loss is shown for the birdscreen weatherhood.

®

Model IGX Intake Dimensions

Model IGX Unit Dimensions

Intake Width

Intake Height

Housing TUVW

H12 30.9 34 4.9 1.1

H22 41.7 39.95 4.9 1.1

H32 49.75 43.75 4.9 1.2

H35 74 47 5.8 1.6

F

EDCBBBAAAA

AA

*AA - Filtered Weatherhood

Weatherhood Louvered V-Bank Mixing Box Cooling Fan Furnace Downturn

w/Birdscreen Intake w/Filters Filters Coil Plenum

Model IGX Unit Dimensions

*A downblast discharge on the IGX-H35 requires an additional downturned plenum section. All dimensions are shown in inches

Reference dimension S on page 12 for total width of filter housing

11

Housing A AA AAA B BB

C

D Furnace Size E F

Downturn*

Plenum

Width

Low High

H12 24.8 31.5 13.8 21.5 30.7 30 50.4 42.5 100-250 33.2 39 n/a 44.1

H22 31.5 46.6 16.9 24 34 30 69.4 52.2

150-300

33.2

44.9 n/a

44.6 350-400 53.9 500-600 66.4 44.6

H32 47 48.5 16.9 25.8 40.7 98 66

350-400 33.2

48.7 n/a 53.1500-800 66.4

1050-1200 99.6

H35 47 n/a n/a 27.7 45.25 n/a 62

800 50

54.6 37 93.75

1200 74 1600 87.1 2000 111.1 2400 124.2

Housing Furnace Size G H J K L

H12

100

44.1

15

28.6

21.9

1.8

150 21 15.9 200 27 9.9 250 32 4.9

H22

150

53.4

21

28.6

21.8

1.8

200 27.1 15.8 250 31 11.9 300 38

4.9

350-400 53.4 38 28.7

500

53.4

31

28.6

11.9

600 38 4.9

H32

350

52.2

38

39.4

8.7 2

400 38 8.7

500-600 29 17.6 1.8

700-1200 29 8.7 2

H35 800-2400 93.75 35 75.75 18.6 3.4

IGX Horizontal Discharge Dimensions

HZ

Discharge

Opening

K

H

LJ

G

TW

Filter

U

Intake

V

®

Model IGX Roof Curbs

Model IGX Unit Dimensions

Greenheck provides installation flexibility with multiple roof curb options that meet your needs. Whether for flat or pitched roofs, insulated or non-insulated decks, Greenheck curbs facilitate installation and provide weather tightness when roofed and flashed to the factory supplied roof curb 2 inch wood nailer. All curbs are manufactured with 18 gauge galvanized steel and may be shipped with, or in advance of the equipment. Roof curbs over 120 inches in length (70 inches for GPIP at 24 inches height) may ship knocked down for ease of installation.

Roof Curb Model Options Table for Model IGX

GPI GPNS GPS GPIP

Roof Deck

Flat x x x Pitched x Insulated x x Non Insulated x x

Curb Construction

Tabbed & Riveted x Welded x x x Curb Height in inches 12, 16, 20, 24 8, 12 8, 12 12, 16, 20, 24

12

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

Housing Weatherhood

V-bank

Filters

Mixing

Box

Cooling Coil Evap Cooler Fan Section Furnace

H12 48 83 180

Low

CFM

High

CFM

Wet Dry

Blower Max hp

108 3/4

109

3 hp

110

3 hp

MBH 100 150 200 250

284 327 355 197

Weight

260 316 329

Weight

295 305 313 367

H22 68 137 256

Low

CFM

High CFM

Low

CFM

High CFM

Low CFM

High CFM

Blower Max hp

112

3 hp

115

71/2 hp

MBH 150 200 250 300 350 400 500 600

488 550 489 546 248

280

Weight

474 560

Weight

304 313 367 382 425 425 734 764

H32 159 185

303 549

Low

CFM

High CFM

Low CFM

High CFM

Blower Max hp

118

10 hp

120

15 hp

MBH 350 400 500 600 700 800 1050 1200

640 750 305

330

Weight

803 888

Weight

425 425 734 764 850 850 1275 1275

H35 176 270 620 N/A 1885 970

Blower Max hp

122

20 hp

125

25 hp

MBH 800 1200 1600 2000 2400

Downblast

Plenum

Weight

1303 1343

Weight

1488 2176 2681 3369 3874 673

Model IGX Approximate Unit Weight

*Reference Cooling Section on page 14 and 15 to determine high or low cfm cooling coil for H12 to H22 units and evaporative cooler H22 to H32. *Fan section weight includes maximum motor hp weight. All weights shown in pounds (lbs.)

MODEL IGX

DATA

L

Downblast Discharge

Opening

Mixing Box

Top View

Airflow

Housing N P Q R S

H12 20 21 4.7 6.1 33.2 H22 22 32 8.7 6.1 44.1 H32 28.3 41.3 9.2 5.5 52.2 H35 31.25 55.5 8.25 10.9 77.3

IGX Mixing Box Dimensions

Housing Furnace Size HH JJ KK LL

H12 100-250 25 23 3.9 5.2

H22

150-300

26

25

3.9 5.2350-400 34

500-600 25 H32 350-1200 26 34 3.5 5.3 H35 800-2400 28.5 66.5 4.4 21.8

IGX Downblast Discharge Dimensions

NQ

Return

Air

R

S

P

Opening

HH KK

Downblast

Discharge

Opening

L

JJ

®

13

Model IGX Roof Curb Dimensions

*Recommended roof openings.

Housing

Size

N P Q R S T U V W X

H12 20 21 201⁄4 25 17⁄8 41⁄4 41⁄4 13⁄4 21⁄4 21⁄4 H22 22 32 223⁄8 36 17⁄8 41⁄4 41⁄4 13⁄4 21⁄4 21⁄4 H32 281⁄4 411⁄4 281⁄2 44 17⁄8 35⁄8 35⁄8 13⁄4 21⁄4 21⁄4 H35 311⁄4 551⁄2 33 601⁄2 4993

1

⁄4 61⁄2 61⁄2

Housing

Size

C D E F G H J K L M

H12 25 23 26 25 21⁄2 31⁄4 31⁄4 22

1

⁄4 21⁄4

H22

(150-300, 500-600)

26 25 27 36 21⁄2 3121⁄2 22

1

⁄4 21⁄4

H22

(350, 400)

26 34 27 36 21⁄2 31⁄4 31⁄4 22

1

⁄4 21⁄4

H32 26 34 27 44 21⁄2 31⁄2 11 2 21⁄4 21⁄4

H35 281⁄8 661⁄2 295⁄8 68 23⁄4 31⁄4 33⁄4 22

1

⁄2 3

B

Curb Width

O.D.

A

Curb Length O.D.

Return

Duct

Supply

Duct

Curb

Width

O.D.

E*

C

K

G

Curb Length O.D.

J

H

D

F*

L

M

Roof Opening

Supply

Duct

Curb

Width

O.D.

Q*

N

V

S

Curb Length O.D.

U

T

P

R*

W

X

Roof Opening

Return

Duct

IGX-H35

IGX-H12, H22, H32

Roof Curb Unit Detail

Housing

A

BFurnace Size

Mixing

Box

Downturned

Plenum

DX or CW Coil

<=400 500-600 700 800 1050 1200 1600 2000 2400 Short Long H12 72.75 --------+30.75 - +30 +50.5 29.5 H22 82.5 115.75 -------+34 - +30+69.5 40.5 H32 96.25 129.25 129.25 129.25 162.5 162.5 - - - +40.5 - - +98 48.5 H35 - - - 108.75 - 132.75 145.75 169.75 182.75 +45.25 +37 - - 73.5

SHEETMETAL

4.00 SCREW

(BY OTHERS)

Main Rail

Sealant

1.00

WOOD NAILER

GPI CURB

0.500

1.75

1.50

SHEETMETAL

SCREW

(BY OTHERS)

Main Rail

WOOD NAILER

GPI CURB

0.500

1.75

1.50

®

14

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

MODEL IGX

DATA

Model IGX Evaporative Cooling

Greenheck Evaporative Coolers include a galvanized steel housing with louvered intake, 2 in. aluminum mesh pre-filters, stainless steel evaporative media casing and drain pan. Evaporative cooling media shall be cellulose or fiberglass with a depth of 12 inches for approximate cooling effectiveness of 90%. The evaporative cooler is designed for a maximum airflow velocity of 600 fpm. Supply connection is field located through unit. Drain and overflow connections shall be piped through the side for easy installation. Equipment supports for mounting are optional. See Greenheck IOM for piping guidelines.

Dimensional Data

Drain

Connection

Overflow

Connection

Supply

Connection

FILTERS Replacement Media

HOUSING CFM A B C D E F G Qty Size GFC P/N: Qty Size

H12 800 to 3,000 30.2 33.2 40.0 5.75 1.4 7.4 1.4 0.75 0.75 0.25 4 16x16x2 07460640

2 12x12x27.5

1 6X12x27.5

H22

2,000 to 4,800 30.2 44.0 46.0 5.75 3.1 7.4 3.1 0.75 0.75 0.25

2 16x20x2 07451437 3 12x12x33

2 20x20x2 07451438 1 7.5x12x33

4,801 to 7,000 34.7 51.5 46.0 5.75 6.8 7.7 6.8 0.75 0.75 0.25

3 12x20x2 07451766

5 12x12x33

3 20x25x2 07451439

H32

4,500 to 9,000 34.7 66.5 48.7 5.75 6.8 7.7 6.8 0.75 0.75 0.38

6 16x20x2 07451437 5 12x12x35.75

2 20x20x2 07451438 1 6x12x35.75

9,001 to 14,000 38.1 96.5 48.7 2.75 11.6 4.7 11.6 0.75 0.75 0.38

6 16x25x2 07451763

8 12x12x39

3 12x25x2 07451767

2 16x20x2 07451437

1 12x20x2 07451766

H35 10,000 to 23,000 38.1 120.5 55.7 2.84 11 4.6 11 0.75 0.75 0.38

8 23x21x2 07454956

10 12x12x45

4 23x19x2 07454951

Model IGX Evaporative Cooler

All dimensions are shown in inches

Evaporative Cooler

Equipment Support

Curb

Typical Installation

Pre-Filters

Louvered Intake

Stainless Steel Drain Pan

Evaporative Media

AB

D

G

E

Supply Connection Field Located

Overflow

Drain

C

F

®

15

Housing CFM

Coil Dimensions

(HxL)

A B

Housing

Height

H12

Low 1,250 to 2,150 27x22 30 33 39

High 2,151 to 3,400 27x34 50 33 39

H22

Low 2,300 to 3,800 33x33 30 44 45

High 3,801 to 6,700 33x56 69 44 45

H32

High

5,350 to 11,000 36x85 98 52 48.7

IGX Cooling Coil

Top View

A

B

Top View

A

B

Low CFM High CFM

Model IGX DX and Chilled Water Cooling Coil

• Insulated double wall construction

• Double sloped stainless steel drain pan

• Coil and drain connections are stubbed thru side panel for easy hook up

• DX liquid line connections ship internal to unit with access door ensuring damage free delivery

• Cooling controls, thermal expansion valves, condensers and compressors are by others

• Maximum airflow velocity of 525 fpm

All dimensions are shown in inches

®

16

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

FURNACE

VENTING

Indoor Venting Options

When your application calls for indoor installation, Greenheck offers multiple venting options:

Basic Indoor Venting

Separate 2-Pipe Venting

Concentric Venting

Through WallThrough Wall

Through Wall

Through Roof

Through Roof Through Roof

Concentric venting uses outdoor air for combustion and vents combustion by-products outdoors through a vent line, but offers you the benefit of only one roof or wall penetration.

Separate 2-pipe venting uses outdoor combustion air and vents combustion by-products outdoors through a vent line, requiring separate roof or wall openings for each line

.

Basic indoor venting uses indoor air for combustion and vents combustion by-products outdoors through a vent line in the wall or roof.

Furnace Outdoor Venting

Model IG Model IGX

The Greenheck outdoor vent options include a combustion air intake vent and power exhaust vent. An optional combustion exhaust vent terminal is available for installation on a field supplied vertical stack. Check local codes for venting requirements.

Combustion exhaust discharge must be located a minimum of 42 in. from any combustion material. Maintain a minimum of 4 feet clearance from electrical meters, gas meters, regulators, and relief equipment – Use minimum 6 feet clearance in Canada.

2

C

2

B

A

Exhaust Connection continues through box Non-concentric side

Combustion Air Connection Concentric Side

Exhaust Connection Concentric Side

Combustion Air Connection Non-concentric side

Non-Concentric Side

Vent Diameter (inches)

Concentric Side

Vent Diameter (inches)

Model

Furnace Size

(MBH)

A B C Exhaust

Combustion

Air

Exhaust

Combustion

Air

CVA-475 to 175111164446

CVA-6 200 to 400 17 10.25 6.25 6668

Concentric Vent Adapter Dimensions

Concentric Vent Adapter

The concentric vent adapter allows for only one roof penetration for both combustion air intake and exhaust. Vent terminals are included. Exhaust pipe is by others and must be approved for Category III appliance or single wall, 26 gauge or heavier galvanized pipe vent.

All dimensions are shown in inches

Note: The IGX-H35 is outdoor installation only and the indoor venting options do not apply.

Combustion Air Exhaust

Airflow

Side View Discharge End

Combustion Air Intake Vent

Side View

Combustion Air Exhaust

Combustion Air Intake Vent

®

17

Model IGX (H12, 22, 32)

Model IG

IG Reference - Venting Connection Location (H10, 20, 30)

Model IGX - Venting Connection Location (H12, 22, 32)

IG

Housing

A B C D E F

Flue Connection Size (Diameter)

Standard Non-Concentric Concentric

Exhaust Exhaust Intake Exhaust Intake

10 3.89 5.12 9.12 11.59 23.11 27.58 4.0 4.0 4.0 4.0 6.0

20 3.91 3.89 7.89 11.62 25.34 32.27 6.0 6.0 6.0 6.0 8.0

30 3.91 3.89 7.89 11.62 25.34 32.27 6.0 6.0 6.0 6.0 8.0

Housing MBH C D

H12 100-250 8.5 8.0

H22 150-600 8.5 8.0

H32 350-1200 8.5 8.0

IGX Gas Connection (H12, 22, 32)

All dimensions are shown in inches

All dimensions are in inches. Dimensions B and E are not needed for standard venting. A round adapter should be used for the exhaust connection.

Housing

Furnace

Size

A B E F

Flue Connection Size (Diameter)

Standard Non-Concentric Concentric

Exhaust Exhaust Intake Exhaust Intake

H12

100-150 4.45 8.45 23.43 27.9 4 4 4 4 6

200-250 5.64 9.64 23.97 30.9 6 6 6 6 8

H22

150 4.45 8.45 29.38 33.85 4 4 4 4 6

200-300

5.67 9.67

24.97 31.9

66668350-400 19.01 25.94

500-600 24.97 31.9

H32 350-1200 5.96 9.71 28.31 35.24 6 6 6 6 8

Model IGX - Venting and Gas Connection Location (H35)

32.660

14.098

49.89

6.771 ± 1

28.109

18.514 ± 2

1 in. NPT gas connection

Only used with 800mbh

furnace

4x4 Exhaust Outlet

Combustion air intake

Exhaust Outlet

Combustion Air Inlet

F

E

D

A

B

C

3/4 In. Gas Connection

3/4" Gas Connection

C

Exhaust Air Outlet

Combustion Air Intake

F

E

D

A

B

®

18

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

FILTER

DIFFUSERS

Greenheck weatherhoods include 18 gage galvanized construction with integral galvanized wire mesh inlet screen for outdoor mounting. Filtered weatherhoods feature 2 inch aluminum mesh filters with a slide out design for easy service access for service. Louvered intakes include moisture-eliminating louvers with 2 inch aluminum mesh filters that provide a compact space saving design. All three intake options are designed to prevent water and debris from entering the system.

V-Bank Filters

Weatherhood w/Birdscreen

Louvered Intake

Housing Filter Type (2 in.) Qty Nominal GFC P/N Qty Nominal GFC P/N

H10

Aluminum Mesh 8 12x20x2 00451766 4 16x20x2 00451437

Disposable 8 12x20x2 00463685 - - -

H20

Aluminum Mesh 8 12x25x2 00451767 4 16x25x2 00451763

Disposable 8 12x25x2 07456452 - -

H30

Aluminum Mesh 8 12x25x2 00451767 4 16x25x2 00452915

Disposable 8 12x25x2 00456452 - - -

Model IG

V-Bank Filters

Weatherhood w/Birdscreen

Louvered Intake Filtered Weatherhood

Housing Filter Type (2 in.) Qty Nominal GFC P/N Qty Nominal GFC P/N Qty Nominal GFC P/N

H12

Aluminum Mesh 4 15x20x2 00458206 4 16x16x2 00460640 4 16x20x2 00451437

Disposable 4 15x20x2 00458208 - - - - - -

H22

Aluminum Mesh 6 20x20x2 00451438 4 20x20x2 00452916

2 20x25x2 00453499

4 12x25x2 00451767

Disposable 6 20x20x2 00451435 - - - - - -

H32

Aluminum Mesh 10 20x25x2 00451439 6 16x25x2 00452915 6 20x25x2 00453499

Disposable 10 20x25x2 00451436 - - - - - -

H35

Aluminum Mesh 15 20x25x2 00451439 - - - - - -

Disposable 15 20x25x2 00451436 - - - - - -

Model IGX

*V-bank filters apply to units with Mixing Box or Standard Weatherhood with Birdscreen. All dimensions shown in inches.

Filters

Weatherhood Options

Weatherhood with Birdscreen

IG & IGX

Louvered Intake

IG & IGX

Filtered Weatherhood

IGX

Greenheck offers 2 inch aluminum mesh or pleated disposable filters. Aluminum mesh filters are approximately 5% efficient and are typically applied to most industrial, manufacturing, and kitchen applications. Disposable filters are 30% efficient, include a MERV 7 rating and are applied where a higher degree of cleanliness is required such as schools, nursing homes, packaging, and food processing plants. Please consult the Greenheck factory for high efficiency filtration (up to 95%).

Disposable Filters

• Die cut double wall moisture resistant beverage board frame

• Adhesive bond of frame and media prevent bypass

• High loft blended synthetic and natural fiber media with fire retardant additive

• Galvanized steel support grid

• Face velocity rating of 300 to 625 fpm

• 30% Average efficiency (ASHRAE 52-76)

• MERV 7 rating (ASHRAE 52.2)

• arrestment value exceeds 90%

• UL Class 2 Rated per UL Standard 900

Aluminum Mesh Filters

• Bonded aluminum media provides strength and durability

• Aluminum media in varying pattern obtains maximum depth loading

• Easily washable

• Delivers high performance at varying velocities up to 650 fpm

• Average arrestment of 68% @ 520 fpm when tested per ASHRAE 52-76

• Meets UL Class 2 requirements

®

19

4-Way Diffuser

Blower

Size

Maximum

CFM

A B C D E F G

IG/IGX 112-115 8,000 41.75 41.75 8.75 32 6 22 18

IGX 118-120 16,000 49.75 49.75 12.75 42.0 10.0 28.00 26.00

1-Way Diffuser 2,000 - 4,000 cfm IGX-H12 and H22 Only

Note: Diffuser may require duct transition from discharge of unit.

2-Way Diffuser 4,000 - 6,000 cfm IGX-H12 and H22 Only

Note: Diffuser may require duct transition from discharge of unit.

Diffuser Options

27.791

1.000 TYP. 4 SIDES

7.630

FLANGE

17.000

6.096

15.558

24.192

14.656

12.300

37.630

FLANGE

1.000 TYP. 4 SIDES

5.929

17.283

21.694 TYP.

31.744

16.625

A

20.348

17.308

16.406

B

F

G

E

D

®

C

20

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

MUA

CONTROLS

Make-Up Air Furnace & Temperature Controls

Capable of operating on Natural Gas or LP vapor, the Greenheck furnace includes power venting, main gas pressure regulator, main gas valve, direct spark ignition system, high limit, 24 V control transformer. Furnace turndown capability is maximized with your choice of electronic staged, electronic modulation, or external supplied 0-10 VDC or 4-20 mA furnace control.

Electronic Modulation

• Maxitrol 92 Series – Single furnace control – Up to 400 MBH – 55 to 90 discharge

temperature range

– Up to 2:1 modulating

turndown per furnace

• 4:1 Modulating Turndown

– Single, double, or triple furnace control

– Up to 1200 MBH

– 55 to 95 discharge temperature range

– Up to 4:1 modulating turndown per furnace

– 8:1 turndown on double furnace, 12:1 turndown

on triple furnace

Stage Control

• Johnson A350 Series

– Single, double or triple

furnace control

– Up to 1200 MBH

– 55 to 90 discharge

temperature range

– Up to 2:1 staged turndown

per furnace

• 8:1 Staged Turndown

– Single, double, or triple furnace control

– Up to 1200 MBH

– 55 to 95 discharge temperature range

– Up to 8:1 modulating turndown per furnace

– 16:1 turndown on double furnace, 24:1

turndown on triple furnace

Housing

Modulation Control Staged Control

Maxitrol 92 Johnson FX Controller Johnson A350 Johnson FX Controller

H10

2:1 4:1 2:1 8:1

H20

H30

IG Turndown Ratio Availability

Housing Furnace Size

Modulation Control Staged Control

Maxitrol 92 Johnson FX Controller Johnson A350 Johnson FX Controller

H12 100 - 250 2:1 4:1 2:1 8:1

H22

150 - 400 2:1 4:1 2:1 8:1 500 - 600 n/a 8:1 4:1 16:1

H32

350 - 400 2:1 4:1 2:1 8:1 500 - 800 n/a 8:1 4:1 16:1

1050 - 1200 n/a 12:1 6:1 24:1

H35

800

n/a n/a n/a

4:1 1200 6:1 1600 8:1 2000 10:1 2400 12:1

IGX Turndown Ratio Availability

Room Override

• Space mounted stat increases discharge air temperature by up to 40º F when space temperature is below its set point. Once satisfied, the unit discharge temp reverts back to the setpoint on the discharge temperature selector.

• Coiled bimetal element

• Single stage SPST mercury switch

• Setting lever and thermometer scale on thermostat face

• Standard off-white color

• Straight in wiring capability

• Mount directly on wall or vertical panel box

• Dimensions: 43⁄4 in. high, 27⁄8 in wide, 13⁄8 in. deep

• CSA certified File No. LR95329-1

External Signal Furnace Control

• Receives external (4-20mA or 0-10 VDC by others) to modulate furnace.

®

21

Electronic Modulation

The benefit of electronic modulation is that it enables precise LAT (leaving air temperature) control. As outdoor air temperatures vary, the furnace can modulate the gas flow and deliver a constant LAT. The graph below illustrates how this system would react to a start up condition at 20º F.

Operation within electronic modulation range; LAT control of ± 2º F

However, a potential problem exists if the modulation range has a limited turndown. Many manufacturers of indirect gas-fired MUA units only offer electronic modulation with a 2:1 turndown. This can result in the performance illustrated by the graph below with the same system operating at on outdoor temperature of 45º F.

Operation not within electronic modulation range; LAT control of + 10º F

The key point is that a MUA unit with electronic modulation only gives you precise temperature control when the furnace operates within its modulation range. Outside of the modulation range, the furnace will behave like a single-stage unit and deliver inconsistent LAT.

How often the MUA unit actually runs in its modulation range is dependent on the turndown ratio. Based on weather bin data analysis for a wide range of climates, the table above provides reasonable estimates.

The solution to this potential problem is specifying a higher turndown ratio so that operation in the modulation range is maximized. Greenheck offers the highest modulation turndown ratios in the industry. The table below summarizes Greenheck’s capabilities.

Multi-Stage Control

An alternative to electronic modulation furnace control is high turndown multi-stage control. Where maximum turndown ratio is desired, multi-stage control is the answer. A single furnace MUA unit (< 400 MBH) can have an 8:1 turndown ratio.

As with the electronic modulation options, the multistage turndown ratio offering is dependent on the number of furnaces in a MUA unit. The table below summarizes the staging available from Greenheck.

The 8:1 multi-stage system on a single furnace MUA unit will provide LAT accuracy of ± 3.5º F across the entire range of outdoor air temperature conditions. The 16:1 (2 furnaces) and 24:1 (3 furnaces) systems will typically provide LAT accuracy of ± 2º F.

Summary

Be sure that the turndown ratio or number of stages is clearly called out in your specification. A spec that simply states “shall have electronic modulation control” will likely result in a 2:1 turndown ratio, resulting in unsatisfactory LAT control and unhappy customers.

Technical Guide: Furnace Control and Turndown Ratio

Turndown

"Staged" Mode

Operation Time

"Modulation"

Operation Time

2:1 60% 40%

4:1 20% 80%

8:1 5% 95%

1 Furnace

(Up to 400 MBH)

2 Furnaces

(500 to 800 MBH)

3 Furnaces

(over 800 MBH)

4:1 8:1 12:1

1 Furnace

(Up to 400 MBH)

2 Furnaces

(500 to 800 MBH)

3 Furnaces

(over 800 MBH)

8:1 16:1 24:1

70

10

50

30

90

OA Temp (20° F)

Full Fire

50% of Full Fire

Discharge Set poi nt

OA Temp (45° F)

Full Fire

50% of Full Fire

Discharge Set poi nt

70

10

50

30

90

110

Electronic Modulation

Multi-Stage Control

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22

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

MUA

CONTROLS

Make-Up Air Airflow & Evaporative Cooling Controls

Mixing Box

For buildings that experience varying demands in fresh air requirements, Greenheck mixing box and variable volume control options provide the solution that minimize energy consumption while meeting fresh air requirements. All airflow controls are low voltage and easily interface with building management systems. Greenheck mixing boxes include low leakage control dampers for outdoor and return air with a control actuator in a face and bypass configuration. Either 2inch pleated 30% efficient filters or 2-inch aluminum mesh filters are available. Filters are positioned so that the return air is also filtered. A moisture eliminating louvered intake is available for outdoor mounted units.

Two position: Includes outdoor air and return air dampers with 2-position actuator. Unit provides either 100% outdoor air or 100% return air. Responds to user input from 2-position return air ON/OFF switch on factory supplied TSCP remote control panel. With return air on, the dampers are positioned 100% return air, 0% outdoor air. With return air off, the dampers are positioned for 100% outdoor air.

Building Pressure Control: Outdoor air and return air dampers with modulating actuator modulate to maintain desired building pressure through a photohelic gage that compares indoor air and outdoor air pressure. As exhaust air volumes vary, the dampers will modulate via the photohelic gage to maintain the desired building pressure setting that is adjustable on the photohelic gage. A slight positive pressure is a normal setting. Standard photohelic gage offers a range of –0.25 in. wg to +0.25 in. wg

Potentiometer: Dampers with modulating actuator are controlled by a remote mounted potentiometer on a factory supplied TSCP remote control panel. As the potentiometer is adjusted, the position of the dampers is varied to provide anywhere from 100% outdoor air to 100% return air. Outside air and return air combine to provide the supply air.

External Signal by others: Providing the ultimate in flexibility to meet customer control demands, the Supply and Return air dampers with modulating actuator are controlled by customer supplied 4-20 mA or 2-10 VDC signal. As the supplied signal varies, the damper position modulates. Actuator is factory wired to numbered control terminal block for easy field wiring

Occupied/Unoccupied for Model IGX Only: Dampers with 2-position actuator modulate based on mode set point. When in occupied mode, dampers modulate to provide 100% outdoor air and blower runs continuously with furnace modulating based on discharge temperature controller. When in unoccupied mode, dampers modulate to provide 100% return air with the blower cycling on and off based on a call for heat from a factory supplied space thermostat. The Occupied/Unoccupied mode is determined by a programmed setting on the factory supplied 7-day programmable time clock mounted in TSCP remote control panel or a 2-position manual switch.

Evap Cooling Control Option

Recirc: Factory supplied Water pump recirculates

water over media with constant bleed off to prevent mineral build-up. Float valve included.

Recirc with Auto Drain & Flush: The drain and flush cycle timer changes water in the sump based on programmed cycle time to reduce or prevent mineral build-up. Includes freeze protection to drain sump and all water lines if outdoor air temp drops below freeze stat set point. Freeze stat, cycle timer, pumps and float valve, are included.

Water Wizard: Measures outdoor air temperature and humidity and adjusts water supplied to media to maximize evaporative cooling. On cool or humid days, the Wizard knows the evaporative cooling potential is low and reduces the water supply to save you money. On hot or dry days, the Wizard increases the water supply rate to meet the increased evaporative cooling potential and provide the most cooling possible. Factory provided controller includes LED display and easy user interface keys. Temperature sensors, pressure gauge and manual supply valve are included.

Variable Volume

Two Speed: This inexpensive system can easily

respond to varying exhaust volumes. A two-speed 1/3 reduction motor enables the unit to run at either maximum airflow or reduced speed. The motor speed control is achieved through a Low/Off/High speed switch mounted on the TSCP remote control panel.

Variable Frequency Drive: A variable frequency drive controls the motor speed based on output from a potentiometer or a building pressure controller - photohelic gage. The photohelic gage will compare indoor and outdoor air pressure. As exhaust volumes vary, the make-up air volumes are adjusted to maintain the desired building pressure. The manual potentiometer can be adjusted to vary air volumes from approximately 50% to 100% airflow.

®

23

Industrial Make-Up Air

Temperature Control Recommendation

Manual Heating Switch

Application: This make-up air control system is recommended for industrial make-up air systems. A fan switch

energizes the make-up air fan and opens the damper. If an exhaust fan is interlocked with the MUA unit (exhaust starter provided by Greenheck and mounted in the MUA unit control center), the exhaust fan will also be energized. A separate manual switch energizes the heater. This system enables the user to manually control the fan and heater operation. A heat/cool switch may be substituted for the heat switch.

Heating Setpoint(s): Like most make-up air systems, this discharge temperature control system will adjust the heating capacity to satisfy the LAT (Leaving Air Temperature) setpoint. In Normal mode, the heater will heat the air to the Normal LAT setpoint when the outdoor air temperature is below the Inlet Air sensor setpoint. When the room temperature drops below the room setpoint, the system goes into override mode and the heater will then discharge at the Override LAT setpoint.

Typical Temperature Settings for Industrial Make-Up Air Systems:

Normal LAT: 70º F

Override LAT: 95º F All setpoints are field adjustable

Room Temp: 65º F

Inlet Air Sensor: 60º F

Benefits: This is a very reliable and economical system that provides industrial facilities with heated MUA when outdoor temperatures are below 60º F (with Inlet Air Sensor option). The manual fan and heater switches gives the owner the flexibility to choose which mode of operation is desired based on individual circumstances. If the Room Override option is selected, the Room Temp setpoint can be adjusted from the remote control panel.

Supply Fan = 'Off'

Exhaust Fan = 'Off''

(If Applicable)

Damper = 'Closed'

Heating = 'Off'

Off On

Fan Switch

Heating = 'Off'

Heat Switch

Off

Supply Fan = 'On'

Exhaust Fan = 'On''

(If Applicable)

Damper = 'Open'

On

OA Temp < Inlet

Room Override

Air Sensor

Setpoint

Ye s

Call for Heat

No

Ye s

No

Heating = 'Off'

Heating = 'On'

Override LAT

Heating = 'On'

Normal LAT

®

24

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

MUA

CONTROLS

Greenheck TSCP Industrial Type Remote Control Panel

The Greenheck TSCP industrial type remote control panels feature a variety of unit control switching and indicating lights. The TSCP housing is constructed of 18 ga. Galvaneal steel with piano hinge and permatector finish. If optional room override is specified with your TSCP, it will be supplied factory mounted on the exterior front panel door. Installation and field wiring is easy with point-to-point wiring between the Make-Up Air unit and TSCP matching numbered terminal blocks.

NEMA 1 rating is standard. Consult factory for NEMA 12 or NEMA 4 options.

Supply Switch

Included on all IG and IGX TSCP’s. Switch turns supply blower on or off.

Heat / Off / Cool Switch

Heat switch is included on all IG and IGX TSCP’s. Cool position is included if unit is equipped with cooling. Allows user to select tempering from available options.

Additional Switching

Addition switches are included for two position mixing box control or occupied / unoccupied controls.

Potentiometer

A potentiometer is included on the TSCP if a manual potentiometer was selected to control a VFD or mixing box. Allows the user to manually adjust the mixing box dampers or VFD speed.

Room Override

A room override sensor and selector is included on the TSCP if the room override option was selected.

Blower Light

Included on all IG and IGX TSCP’s. Indicates when the supply blower is energized.

Heat Light

Included on all IG and IGX TSCP’s. Indicates when the heat switch is closed.

Cool Light

Included on all IG and IGX TSCP’s equipped with evaporative cooling. Indicates when the cooling switch is closed.

Dirty Filter Light

Included on all IG and IGX TSCP’s equipped with a dirty filter switch. Indicates when pressure drop through filters is greater than setpoint.

Photohelic

Included on all IG and IGX TSCP’s equipped building pressurization control of a VFD or mixing box. Includes building pressure gage and field adjustable setpoints.

A

1

2

3

4

5

6

7

8

9

All dimensions are shown in inches

TSCP Dimensions A B C

Standard TSCP 12.375 12.375 4.5

TSCP w/Building Pressure Control Option 18.375 12.5 7.875

B

C

®

25

Application: This make-up air control system is recommended for commercial kitchen ventilation systems. A single switch energizes the make-up air unit, the exhaust fan and potentially the kitchen hood lights. This ensures that the entire system is operational when the power is switched on. For heating only make-up air systems, this control option provides excellent temperature control that is very economical and very easy to operate.

Heating Setpoint(s): Like most make-up air systems, this discharge temperature control system will adjust the heating capacity to satisfy the LAT (Leaving Air Temperature) setpoint. In Normal mode, the heater will heat the air to the Normal LAT setpoint when the outdoor air temperature is below the Inlet Air sensor setpoint. If the room temperature drops below the room setpoint, the system goes into override mode and the heater will then discharge at the Override LAT setpoint.

Typical Temperature Settings for Commercial Kitchen Systems:

Normal LAT: 60º F

Override LAT: 95º F All setpoints are field adjustable

Room Temp: 70º F

Inlet Air Sensor: 55º F

Benefits: This system will normally provide cool 60º F air to the kitchen, which is typically very warm due to the cooking process. In cases where the cooking equipment is not generating enough heat to maintain the desired 70º F room temperature, the make-up air unit will bump it’s discharge temperature to 95º F until the room temperature reaches 70º F. This system will not allow air to enter the building below the inlet air sensor temperature.

Commercial Kitchen Make-Up Air

Temperature Control Recommendation

Automatic Heating

Off On

Fan Switch

Supply Fan = 'On'

Exhaust Fan = 'On''

Supply Fan = 'Off'

Exhaust Fan = 'Off''

Damper = 'Closed'

Heating = 'Off'

OA Temp < Inlet

Air Sensor

Setpoint

Ye s

Room Override

Call for Heat

No

Ye s

Damper = 'Open'

Heating = 'Off'

Heating = 'On'

Override LAT

Heating = 'On’

Normal LAT

®

26

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

MUA

CONTROLS

Kitchen Supply Control Panel (KSCP)

Offers optional hood light, fan, and tempering on/off switches with remote mounted junction box and stainless steel cover plate. Switch labeling is included.

Make-Up Air Controls

Typical Wiring of Light/Fan/Heat KSCP

Junction Box

Stainless Steel Cover Plate with Switch Panel

5.59

4.5

120 VAC for lights by others

3.81

2.50

FSC

r

e

t

a

e

H

n

a

F

s

t

h

g

i

L

6.38

Control Center Terminal block

W1

3GR

Inside Make-Up Air Unit 24 VAC

Toggle Switches

Kitchen Hood Lights

Light Fan Heat

KSCP Light / Fan / Heat switch reflects combined switching for supply and exhaust. Exhaust fan starter supplied by Greenheck inside make-up air control center.

®

27

Notes:

®

28

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

HV2: 30-75% Minimum Outdoor Air

The HV2 option is required when the minimum outdoor air volume exceeds 30% of the total supply air volume. With higher outdoor air volumes, mixed air temperatures can vary greatly. Accordingly, 2-

stage heating is required.

Choose one of three ventilating options described below. The ventilation option should be chosen based on your application’s minimum outside air requirements.

HV1: 0-30% Minimum Outdoor Air

HV1 is the most common among heating and ventilating units, allowing you to set the minimum outdoor air volume between 0 and 30% of the total supply air volume. With the relatively low percentage of outdoor air, mixed air temperatures are mild and stable. 1-stage heating and/or cooling is recommended (2-stage is optional).

HV3: 100% Return Air

The HV3 option is available when no outdoor air is needed. With relatively stable return air conditions, 1- stage heating is strongly recommended.

Heating & Ventilation Options

Mixing Box

A filtered mixing box is standard on all heating and ventilating units (HV) and includes outdoor air and return air low leakage control dampers in a face and bypass configuration.

A heating and ventilation (HV) option and a mixing box (MB) or economizer (EC) control option must be specified for every HV unit. Choose one of three heating and ventilation options and one of eight economizer and mixing box options to provide a heating and ventilating solution for your application.

Heating & Ventilating Controls

H & V

CONTROLS

Outdoor Air

0% - 30%

SupplyReturn Air

70% - 100%

Outdoor Air

30% - 75%

SupplyReturn Air

25% - 100%

SupplyReturn Air

100%

®

29

The economizer control package enables free cooling using outdoor air. All EC options include a modulating actuator for controlling outdoor and return air dampers, and a field adjustable minimum outdoor air positioner. During a call for heating the economizer is locked out and the outdoor air damper holds at the minimum position.

MB1: Minimum Outdoor Air Positioner

Mixing box option MB1 includes a modulating actuator and potentiometer that control the outdoor air and return air damper positions. When the unit is energized, the dampers will travel to the position corresponding to the potentiometer setting. The potentiometer is easily adjustable, allowing you to dial in the optimum amount of outdoor air. When the unit is powered off, the outdoor air damper closes to prevent backdrafting.

MB2: 2-10 Volt External Signal

Mixing box option MB2 includes a modulating actuator controlled by an external 2-10 volt signal. This option is appropriate for applications that call for a building automation system that will control the mixing box dampers.

MB3: 4-20 mA External Signal

Mixing box option MB3 includes a modulating actuator that is controlled by an external 4-20 mA signal. Like option MB2, this option is appropriate for applications that call for a building automation system to control the mixing box dampers.

MB4: Manual Quadrant

Mixing box option MB4 uses a manual quadrant to secure the outdoor and return air in the desired position. The damper remains in the secured position and maintains the minimum outside air requirements.

In addition to the economizer (EC) options described above, Greenheck offers four mixing box (MB) control options for applications where a factory provided economizer package is not desired.

Mixing Box Controls with Economizer Cooling

Mixing Box Controls (no economizer)

y

EC1: Outdoor Temperature Reference

On a call for cooling, option EC1 compares the outside air temperature to the economizer’s field adjustable set point.

• If the outside air temperature exceeds the set point, the minimum outside air is provided.

• If the outside air temperature is between the economizer set point and 55ºF, the dampers go to the 100% outside air position.

• If the outside air is below 55ºF, the dampers modulate to achieve 55ºF mixed air temperature.

EC2: Outdoor Enthalpy Reference

On a call for cooling, economizer option EC2 compares the outside enthalpy to the field adjustable enthalpy changeover set point.

• If the outside enthalpy is less than the set point, the dampers will modulate to a 55ºF mixed air temperature.

• If the outside air enthalpy is greater than the economizer’s set point, the dampers go to the minimum outside air position.

EC3: Airstream Temperature Reference

On a call for cooling, economizer option EC3 compares the outdoor and return air temperatures.

• If the outdoor air temperature is greater than the return air, the dampers go to minimum outside air position.

• If the outside air temperature is less than the return air, the dampers will modulate to achieve a 55ºF mixed air temperature.

EC4: Airstream Enthalpy Reference

On a call for cooling, economizer option EC4 compares the outdoor and return air enthalpies.

• If the outdoor air enthalpy is greater than the return air, the dampers go to the minimum outside air position.

• If the outside enthalpy is less than the return air, the dampers will modulate to achieve a 55ºF mixer air temperature.

Heating & Ventilating Controls

Outdoor Air

Return Air

Suppl

®

30

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

Basic bi-metal thermostats with mercury switches or fully programmable electronic thermostats are available as part of your HV system. Match your heating, staging, and operational requirements to the appropriate thermostat.

TC1: 1-stage heating / cooling

TC1 is a coiled bimetal thermostat used for single-stage heating systems. It is also compatible with economizer cooling.

TC2: 2-stage heating

TC2 is a coiled bimetal thermostat used for 2-stage heating systems.

TC4: Programmable

TC4 has full seven-day program capability. The thermostat can be set to four times and eight temperature settings for each day of the week. It can also control up to two stages of heating and economizer cooling.

TC5: Deluxe Programmable

TC5 has full seven-day program capability. The thermostat can be set for two occupied and two unoccupied times with adjustable temperature settings for each day of the week. It can control up to three stages of heating and economizer cooling. The Intelligent Fan™ feature energizes the fan continuously during occupied mode and intermittently with a call for heating in unoccupied mode.

TC3: 2-stage heating / cooling

TC3 is a coiled bimetal thermostat used for 2-stage heating and is also compatible with economizer cooling. It includes an adjustable heat anticipator, stops, and a locking cover.

Thermostat Options

HV Selection Guide

No HV3 - 100% Return Ai

r

Yes

HV1 - 0 to 30% Minimum Outdoor Air HV2 - 0 to 75% Minimum Outdoor Air

EC1 - Outdoor Temperature Reference MB1 - Potentiometer EC2 - Outdoor Enthalpy Reference Economizer Minimum OA MB2 - External 2-10 Vdc Signal EC3 - Differential Temperature Reference MB3 - External 4-20 mA Signal EC4 - Differential Enthalpy Reference MB4 - Manual Quadrant

TC5 - Deluxe Programmable T-Stat Yes Max 3-Stage Heat, 2-Stage Cool

No

TC4 - Programmable T-Stat

Yes

Max 2-Stage Heat, 2-Stage Cool

No

TC1 - Max 1-Stage Heat, 1-Stage Cool TC2 - Max 2-Stage Heat TC3 - Max 2-Stage Heat, 2-Stage Cool

Outdoor Air

Requirements

Select Mixing

Box Controls

Occupied Status,

3-Stage Heat or

Warm-up

Programmable

Thermostat

Heating & Ventilating Controls

H & V

CONTROLS

®

31

Notes:

®

32

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

TYPICAL

SPECIFICATIONS

IG Typical Specification

General: Make-up air unit shall be as manufactured by Greenheck or approved equal provided all specifications are met. Greenheck Model IG is used as the basis of design. Performance shall be as scheduled on plans.

Furnace: Indirect fired gas furnace shall be 80% efficient, ETL Listed and have a blow through fan design. Furnace shall be capable of operation with natural or LP gas and have a power venting system. The heat exchanger shall be constructed of aluminized steel or stainless steel. Standard furnace features shall include main gas pressure regulator, main gas valve, electronic staged or electronic modulating controls, direct spark ignition system, high limit and a 24 volt control transformer.

Temperature Control: Furnace heat output shall be controlled based on a field adjustable discharge temperature set point. Discharge temperature sensor shall be factory mounted and wired to the unit control center. Furnace shall have electronic modulation or electronic staged control.

Unit Casing and Frames: Unit shall be of internal frame type construction of galvanized steel. All frames and panels shall be G90 galvanized steel. Where top panels are joined there shall be a standing seam to insure positive weather protection. All metal-to-metal surfaces exposed to the weather shall be sealed. All components shall be easily accessible through removable doors.

Insulation: Units equipped with a mixing box shall be insulated from the mixing box intake through to the supply discharge. 100% outside air units shall be insulated from the filter section intake through to the supply discharge. Insulation shall be in accordance with NFPA 90A and tested to meet UL 181 erosion requirements. Double wall construction is standard.

Fan Section: Centrifugal fans shall be double width, double inlet. Fan and motor shall be mounted on a common base and shall be internally isolated. All blower wheels shall be statically and dynamically balanced. Ground and polished steel fan shafts shall be mounted in permanently lubricated ball bearings. Bearings shall be selected for a minimum (L10) life in excess of 100,000 hours at maximum cataloged speeds.

Filter Section: Filters shall be mounted in a V-bank arrangement such that velocities across the filters do not exceed 550 feet per minute. Filters shall be easily accessible through a removable access panel.

Weatherhood: Weatherhood shall be constructed of G90 galvanized steel with birdscreen mounted at the intake.

Motors and Drives: Motors shall be energy efficient, complying with EPACT standards, for single speed ODP and TE enclosures. Motors shall be permanently lubricated, heavy duty type, matched to the fan load and furnished at the specified voltage, phase and enclosure. Drives shall be sized for a minimum of 150% of driven horsepower. Pulleys shall be cast and have machined surfaces, 10 horse power and less shall be supplied with an adjustable drive pulley.

Electrical: All internal electrical components shall be prewired for single point power connection. All electrical components shall be UL listed, recognized or classified where applicable and wired in compliance with the National Electrical Code. Control center shall include motor starter, control circuit short circuit protection, control transformer for 24 VAC circuit, integral disconnect switch and terminal strip. Contactors, Class 20 adjustable overload protection and single phase protection shall be standard.

Mixing Box (2-Position): Damper shall be either fully open or fully closed. Damper position shall be controlled by a remotely mounted switch. Mixing box shall provide 100% make-up air when the damper is closed and recirculate 100% return air when the damper is open.

Mixing Box (Building Pressure): Mixing box shall modulate outdoor and return air volumes to maintain desired building pressure. A remote control panel shall be provided by the make-up air unit manufacturer and include a photohelic gauge. Furnace shall be multi-stage or modulating and operate based on discharge temperature control.

Mixing Box (Potentiometer): Mixing box shall enable manual modulation of outdoor and return air volumes from a remote potentiometer. The potentiometer shall be mounted on a control panel provided by the make-up air manufacturer. Furnace shall be multi-stage or modulating and operate based on discharge temperature control.

Mixing Box (External Signal): Mixing box shall enable modulation of outdoor and return air volumes from external signal 4-20 mA or 0-10 VDC signal supplied by others. Damper actuator control will be factory wired to terminal block in unit control center to receive modulation signal field wired to unit by others for easy BMS/DDC interface.

Evaporative Cooling Section: Evaporative cooling section shall include a galvanized steel housing with louvered intake, 2 inch aluminum mesh filters and a stainless steel evaporative cooling module all provided by the make-up air unit manufacturer. Evaporative cooling media shall be cellulose or fiberglass with a depth of 12 inches for a cooling effectiveness of 90%. Drain and overflow connections shall be piped through the side of the evaporative cooling section.

®

33

IGX Typical Specification

General: Make-up air unit shall be as manufactured by Greenheck or approved equal provided all specifications are

met. Greenheck Model IGX is used as the basis of design. Performance shall be as scheduled on plans.

Furnace: Indirect fired gas furnace shall be 80% efficient, ETL Listed and have a blow through fan design. Furnace shall be capable of operation with natural or LP gas and have a power venting system. The heat exchanger shall be constructed of aluminized steel or stainless steel. Standard furnace features shall include main gas pressure regulator, main gas valve, electronic staged or electronic modulating controls, direct spark ignition system, high limit and a 24 volt control transformer. Furnace shall be insulated and have double wall construction.

Temperature Control: Furnace heat output shall be controlled based on a field adjustable discharge temperature set point. Discharge temperature sensor shall be factory mounted and wired to the unit control center. Furnace(s) shall have electronic modulation or at least 2 stages of control.

Unit Casing and Frames: Unit shall be of internal frame type construction of galvanized steel. All frames and panels shall be G90 galvanized steel. Where top panels are joined there shall be a standing seam to insure positive weather protection. All metal-to-metal surfaces exposed to the weather shall be sealed, requiring no caulking at job site. All components shall be easily accessible through removable doors.

Insulation: Models provided with a mixing box shall be insulated from the return section through to the supply discharge. Insulation shall be in accordance with NFPA 90A and tested to meet UL 181 erosion requirements. Double wall shall be provided if specified.

Fan Section: Centrifugal fans shall be double width, double inlet. Fan and motor shall be mounted on a common base and shall be internally isolated. All blower wheels shall be statically and dynamically balanced. Ground and polished steel fan shafts shall be mounted in permanently lubricated ball bearings (up to size 118) or ball bearing pillow blocks (size 120). Bearings shall be selected for a minimum (L10) life in excess of 100,000 hours at maximum cataloged speeds.

Motors and Drives: Motors shall be energy efficient, complying with EPACT standards, for single speed ODP and TE enclosures. Motors shall be permanently lubricated, heavy duty type, matched to the fan load and furnished at the specified voltage, phase and enclosure. Drives shall be sized for a minimum of 150% of driven horsepower. Pulleys shall be cast and have machined surfaces, 10 horse power and less shall be supplied with an adjustable drive pulley.

Electrical: All internal electrical components shall be prewired for single point power connection. All electrical components shall be UL listed, recognized or classified where applicable and wired in compliance with the National Electrical Code. Control center shall include motor starter, control circuit short circuit protection, control transformer for 24 VAC circuit, integral disconnect switch and terminal strip. Contactors, Class 20 adjustable overload protection and single phase protection shall be standard.

Filter Section: Filters shall be mounted in a V-bank arrangement such that velocities across the filters do not exceed 550 feet per minute. Filters shall be easily accessible through a removable access panel.

Weatherhood: Weatherhood shall be constructed of G90 galvanized steel with birdscreen mounted at the intake.

Mixing Box (Night Setback): Mixing box

shall provide 100% make-up air during occupied hours and 100% recirculation air during unoccupied hours. Furnace(s) shall be multi-stage and operate based on discharge temperature control on occupied setting and space temperature control on unoccupied setting. The system shall allow for separate field adjustable temperature set points for occupied and unoccupied modes of operation.

Mixing Box (2-Position): Damper shall be either fully open or fully closed. Damper position shall be controlled by a remotely mounted switch. Mixing box shall provide 100% make-up air when the damper is closed and recirculate 100% return air when the damper is open.

Mixing Box (Building Pressure): Mixing box shall modulate outdoor and return air volumes to maintain desired building pressure. A remote control panel shall be provided by the make-up air unit manufacturer and include a photohelic gauge. Furnace(s) shall multi-stage and operate based on discharge temperature control.

Mixing Box (Potentiometer): Mixing box shall enable manual modulation of outdoor air and return air volumes from a remote potentiometer. The potentiometer shall be mounted on a control panel provided by the make-up air unit manufacturer. Furnace(s) shall multi-stage and operate based on discharge temperature control.

Mixing Box (Building Pressure): Mixing box shall modulate outdoor and return air volumes to maintain desired building pressure. A remote control panel shall be provided by the make-up air unit manufacturer and include a photohelic gauge. Furnace shall be multi-stage or modulating and operate based on discharge temp control.

Mixing Box (External Signal): Mixing box shall enable modulation of outdoor and return air volumes from external signal 4-20 mA or 0-10 VDC signal supplied by others. Damper actuator control will be factory wired to terminal block in unit control center to receive modulation signal field wired to unit by others for easy BMS/DDC interface.

Cooling Coil: Direct expansion (DX) or chilled water coil shall be factory tested and rated in accordance with ARI

410. Coils shall have copper tubes with permanently expanded aluminum fins, 12 fpi or less. DX coils shall be equipped with distributors to receive expansion valves at the liquid connections. Drain pans shall extend at least 12 inches downstream of coil and sloped to drain connection.

Evaporative Cooling Section: Evaporative cooling section shall include a galvanized steel housing with louvered intake, 2 inch aluminum mesh filters and a stainless steel evaporative cooling module all provided by the make-up air unit manufacturer. Evaporative cooling media shall be cellulose or fiberglass with a depth of 12 inches for a cooling effectiveness of 90%. Drain and overflow connections shall be piped through the side of the evaporative cooling section.

®

34

TYPICAL

SPECIFICATIONS

H & V

CONTROLS

MUA

CONTROLS

FILTERS

DIFFUSERS

FURNACE

VENTING

MODEL IGX

DATA

MODEL IG

DATA

TYPICAL

SPECIFICATIONS

IG-HV Typical Specification

General: Heating and Ventilating unit shall be as manufactured by Greenheck or approved equal provided all specifications are met. Greenheck Model IG-HV is used as the basis of design. Performance shall be as scheduled on plans.

Furnace: Indirect gas fired furnace shall be 80% efficient, ETL Listed and have a blow through fan design. Furnace shall be capable of operation with natural or LP gas and have a power venting system with post purge cycle. The heat exchanger shall be constructed of aluminized steel or stainless steel. Standard furnace features shall include main gas pressure regulator, main gas valve, electronic staged controls, direct spark ignition system, high limit and a 24 volt control transformer. Furnace shall be insulated and have double wall construction.

Temperature Control: Heating and cooling output shall be controlled by a room thermostat to maintain desired room temperature. Economizer control shall provide the first stage of cooling, where specified. Furnaces shall provide 1 or 2 stages of heat output control.

Unit Casing and Frames: All frames and panels shall be G90 galvanized steel. Where top panels are joined there shall be a standing seam to insure positive weather protection. All metal-to-metal surfaces exposed to the weather shall be sealed, requiring no caulking at job site. All components shall be easily accessible through removable doors.

Unit shall have double wall construction and be insulated from the mixing box intake through to the supply discharge. Insulation shall be in accordance with NFPA 96 and tested to meet UL 181 erosion requirements.

Intake: The intake shall be louvered with aluminum mesh filters.

Motors and Drives: Motors shall be energy efficient, complying with EPACT standards, for single speed ODP and TE enclosures. Motors shall be permanently lubricated, heavy duty type, matched to the fan load and furnished at the specified voltage, phase and enclosure. Drives shall be sized for a minimum of 150% of driven horsepower. Pulleys shall be cast and have machined surfaces, 10 horse power and less shall be supplied with an adjustable drive pulley.

Fan Section: Centrifugal fans shall be double width, double inlet. Fan and motor shall be mounted on a common base and shall be internally isolated. All blower wheels shall be statically and dynamically balanced. Ground and polished steel fan shafts shall be mounted in permanently lubricated ball bearings (up to size 118) or ball bearing pillow blocks (size 120 and larger). Bearings shall be selected for a minimum (L10) life in excess of 100,000 hours at maximum cataloged speeds.

Electrical: All internal electrical components shall be prewired for single point power connection. All electrical components shall be UL listed, recognized or classified where applicable and wired in compliance with the National Electrical Code. Control center shall include motor starter, control circuit short circuit protection, control transformer for 24 VAC circuit, integral disconnect switch and terminal strip. Contactors, Class 20 adjustable overload protection and single phase protection shall be standard.

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General: Heating and Ventilating unit shall be as manufactured by Greenheck or approved equal provided all specifications are met. Greenheck Model IGX-HV is used as the basis of design. Performance shall be as scheduled on plans.

Furnace: Indirect gas fired furnace shall be 80% efficient, ETL Listed and have a blow through fan design. Furnace shall be capable of operation with natural or LP gas and have a power venting system with post purge cycle. The heat exchanger shall be constructed of aluminized steel or stainless steel. Standard furnace features shall include main gas pressure regulator, main gas valve, electronic staged controls, direct spark ignition system, high limit and a 24 volt control transformer. Furnace shall be insulated and have double wall construction.

Temperature Control: Heating and cooling output shall be controlled by a room thermostat to maintain desired room temperature. Economizer control shall provide the first stage of cooling, where specified. Furnaces shall provide 1 or 2 stages of heat output control.

Unit Casing and Frames: All frames and panels shall be G90 galvanized steel. Where top panels are joined there shall be a standing seam to insure positive weather protection. All metal-to-metal surfaces exposed to the weather shall be sealed, requiring no caulking at job site. All components shall be easily accessible through removable doors.

Insulation: Models provided with a mixing box shall be insulated from the return section through to the supply discharge. Insulation shall be in accordance with NFPA 90A and tested to meet UL 181 erosion requirements. Double wall shall be provided if specified.

Fan Section: Centrifugal fans shall be double width, double inlet. Fan and motor shall be mounted on a common base and shall be internally isolated. All blower wheels shall be statically and dynamically balanced. Ground and polished steel fan shafts shall be mounted in permanently lubricated ball bearings (up to size 118) or ball bearing pillow blocks (size 120 and larger). Bearings shall be selected for a minimum (L10) life in excess of 100,000 hours at maximum cataloged speeds.

Motors and Drives: Motors shall be energy efficient, complying with EPACT standards, for single speed ODP and TE enclosures.

Motors shall be permanently lubricated, heavy duty type, matched to

the fan load and furnished at the specified voltage, phase and enclosure. Drives shall be sized for a minimum of 150% of driven horsepower. Pulleys shall be cast and have machined surfaces, 10 horse power and less shall be supplied with an adjustable drive pulley.

Electrical: All internal electrical components shall be prewired for single point power connection. All electrical components shall be UL listed, recognized or classified where applicable and wired in compliance with the National Electrical Code. Control center shall include motor starter, control circuit short circuit protection, control transformer for 24 VAC circuit, integral disconnect switch and terminal strip. Contactors, Class 20 adjustable overload protection and single phase protection shall be standard.

Filter Section: Filters shall be mounted in a V-bank arrangement such that velocities across the filters do not exceed 550 feet per minute. Filters shall be easily accessible through a removable access panel.

Weather Hood: Weather hood shall be constructed of G90 galvanized steel, with stationary louvered intake with 2 inch aluminum mesh filters.

Mixing Box: Mixing box shall contain outside air and return air dampers with low leak, pressure activated, extruded vinyl blade seals, stainless steel jamb seals, Belimo actuator and 30% efficient pleated filters in a Vbank arrangement. The mixing box shall modulate the amount of outdoor and return air by use of dampers. Input signal for return damper shall be from potentiometer, 2-10 volt signal, 4-20 mA signal or manual quadrant controller, or economizer.

Cooling Coil: Direct expansion (DX) or chilled water coil shall be factory tested and rated in accordance with ARI

410. Coils shall have copper tubes with permanently expanded aluminum fins, 12 fpi or less. DX coils shall be equipped with distributors to receive expansion valves at the liquid connections. Drain pans shall extend at least 12 inches downstream of coil and be sloped to drain connection.

IGX-HV Typical Specifications

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Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the purchase date. Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory, transportation prepaid. Motors are warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck prove defective during this period, they should be returned to the nearest authorized motor service station. Greenheck will not be responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice.

P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com

Our Warranty

Heating Type

Model

Airflow Range

(CFM)

Max Heater Size

(MBH)

Airflow Options Max Cooling Volume (CFM)

Direct Gas

Natural Gas LP VAV/2-Speed Recirculation Evaporative DX Chilled Water

DG 800 - 15,000 1,600 1,400 12,000

DGX 800 - 48,000 4,800 4,200 X X 46,000 11,000 11,000

TSU 20,000 - 64,000 7,000 6,000 X X 60,000

VSU 800 - 64,000 7,000 6,000 X X

Indirect Gas

IG 800 - 7,000 400 (input) X 7,000

IGX 800 - 23,000 2,400 (input) X X 19,000 11,000 11,000

IG-HV 800 - 7,000 400 (input) X

IGX-HV 800 - 16,000 1,200 (input) X 14,000 11,000 11,000

Steam

MSX 1,000 - 21,000 1,900 MBH Call Factory X 21,000 11,000 11,000

Hot Water

MSX 1,000 - 21,000 1,600 MBH Call Factory X 21,000 11,000 11,000

Electric

MSX 800 - 21,000 180 kW Call Factory X 21,000 11,000 11,000

Untempered

KSFD 400 - 2,100

KSFB 1,000 - 10,500 X

KSF 800 - 12,000 X

MSX 800 - 48,000 X X

TSF 20,000 - 64,000 X

Make-Up Air Product Selection Guide

Model DG

Model IG

Model MSX

Model DGX

Model IGX

Model TSU

Model VSU

Model IG-HV

Model IGX-HV

Model KSF-D

Model KSF

Indirect Gas-Fired Tech Guide Rev1 May 2005

Greenheck IG-108 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual