Green Air Products CO2 Generator User Manual

2generator, 1000 ppm, Rules for safe operation

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P.O. Box 1318 Gresham Or

. 97030 USA

1-800-669-2113 Fax 1-503-663-1

147

[email protected]

om

ww

w.greenair

.com

CO2 GENERATOR FUEL CONSUMTION CHART

PROPANE CONSUMPTION

CU.FT. / HR.

PROPANE TANK SIZE

GE

NER

AT

OR

OU

TPUT

1

5

10

25

MODEL

HOURS OF OPERATING TIME

MA

X

BTU

/HR

CU

.FT.

CO

2/HR

CD-3

1

36

18

0

36

0

90

0

21

83

3

CD-6

2

18

90

18

0

45

0

43

66

6

CD-12

4

12

60

12

0

30

0

87

32

12

CD-18

6

6

30

60

15

0

13

10

18

CD-36

12

3

15

30

75

26

20

36

This chart is used to decide how long a tank of propane will last. This chart is fairly self explanatory

first you will look in the left column to pick a model, then follow it across to the propane tank size

you have. The number that corresponds with the two selections will be the number of hours that

you can operate the Co2 generator.

Carbon Dioxide

Generator

Installation and

Operation Manual

CO

2Generator

Carbon Dioxide Enrichment will dramatically increase the growth of green

plants. Green plants use carbon dioxide (CO2

) and water in the presence of

light to synthesize organic compounds. The plant then converts these organic

compounds into elements that it can use (food). This process is called

photosynthesis. If any of these ingredients (CO2, water or light) are at levels

below what the plant can use for maximum efficiency, it will only be able to

perform at that level and no greater. Adding carbon dioxide to a growing

environment that is not receiving proper nutrients or is low on light will not

produce the desired results. Similarly, plants that are receiving plenty of

sunshine and nutrients will only perform as well as the level of CO2 will allow.

The ambient level of CO2 in the earth's atmosphere is generally between 300

and 400 ppm. Most plants receive far more water and energy in the form of

sunshine than they can use. Increasing the CO2 in the growing area will let

the plant use the excess water and energy that is stored in the leaves. The

result is a substantial increase in the growth rate of any plant that uses

chlorophyll in the process of photosynthesis. Enrichment should commence

at sunrise or when photoperiod begins and refrain during darkness hours.

The average CO2 level that is recommended is 1000 to 2000 parts per million

(PPM). The object is to maintain a constant level in the atmosphere. You can

run a small unit continuously during photoperiods or you can use a larger unit

and time it to function periodically. Where exhaust requirements are frequent,

the latter method is preferable. After the exhaust function the generator can

be cycled to replenish CO2 quickly to maintain rapid plant photosynthesis.

Use the operation time charts to determine the size of generator and the

number of minutes of operation required for the level of CO2

desired. Frequency

of recharge depends on the rate of consumption. For the greatest fuel economy

and accuracy of recharge it is recommended that the Green Air Products

CO2 Monitor Controller (CDMC) be used with all generator and emitter
systems.

** IMPORTANT **

Carbon dioxide generators operate by burning carbonaceous fuels such as

propane or natural gas. The burners used in Green Air Products CO2

generators are specially designed to maximize the production of CO2 and

minimize heat as a by-product. Green Air Products generators provide CO2

far more economically than any other means of enrichment. A constant

burning pilot is used to ignite the gas when the generator is turned on. A

thermocouple is used to monitor the pilot flame. If the pilot flame is lost, a

safety valve will close so that unburned fuel will not be released into the

enclosure. CO2 generator operations may be automatically functioned

according to actual ambient values when installed in conjunction with a CDMC

controller. This control device continually samples the level of carbon dioxide

in the growing area and functions the generator whenever CO2 levels do

not meet your predetermined values. Generators are easily installed,

dependable and efficient. Transformer included. Operates on 110VAC.

Rules For Safe Operation

Read and understand the information in this manual before operating the

equipment. Observe all CAUTIONS.

Unit should be operated in a safe, clean and ventilated area free of flammable

materials.

Housing becomes hot under normal operating conditions. To avoid possible

burns, never touch equipment during operation.

To service or repair this unit always disconnect power source and shut off

fuel supply.

Do not operate if gas fumes are noticed. It is recommended the fuel tank be

located outdoors or in a well ventilated area free of sparks or open flame.

For service or repair always send the unit back to the factory or an authorized

service center.
Never overfill propane tank. Allow room for expansion of contents due to

contrast in temperatures. It is recommended that tank be located outside the

enclosure for safest operation. A properly burning flame should burn clean

and blue and produce no toxic emissions. Remember a flame requires oxygen

to burn so adequate fresh air intake and circulation is important. Always check

for leaks after refitting.

Principals of Operation

Introduction

This chart will give you the minutes of operation required for the areas and

models shown. Top row of the chart represents cubic feet of area in the

enclosure (LxWxH) The left column is the model size. Model numbers

represent maximum CO2 output per hour in cubic feet (CD-3 = 3 cuft/hr CO2)

Example: A CD-6 will take 10 minutes to produce a CO2 level of 1000 ppm

in a 1000 cu. ft. enclosure. The area should be charged as quickly as possible

for maximum advantage. Charging the atmosphere quickly insures that the

rapid photosynthesis process will not be interrupted and the plants growth

rate reduced. Five to ten minutes is a good charge time. Try not to exceed

twenty minutes. Your microclimate will need to be recharged every 1 to 4

hours depending on how much CO2 is lost due to plant usage or drafts (leaks).

Large greenhouses logically require longer charge times and multiple units

may be necessary. The CD-36 takes 1.66 minutes per 1000 cu.ft. area to

charge to 1000 ppm. Therefore a 20,000 cu. ft. area would be 20 X 1.66 which

is 33.2 minutes. For this application that may be an acceptable charge time.

Size and Timing Chart

1000 PPM

CU/FT

100

200

400

600

800

1000

1200

1400

1600

1800

2000

CD-3

2.00

4.00

8.00 12.00 16.00 20.00 24.00 28.00 32.00 36.00 40.00

CD-6

1.00

2.00

4.00

6.00

8.00 10.00 12.00 14.00 16.00 18.00 20.00

CD-12

.50

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00 10.00

CD-18

.33

0.66

1.33

2.00

2.66

3.30

4.00

4.66

5.33

6.00

6.60

CD-36

.17

0.33

0.66

1.00

1.33

1.66

2.00

2.33

2.66

3.00

3.30

Pro

pan

e

Gas

Tan

k

Prop

ane

Gas

Tan

k

Change Over V

alve

Ho

se to

Carb

on

Dio

xide

Gen

erato

r

AUTOM

ATI

C

PROPANE

CHANGEOVER

VALV

E

OPTIONAL

ACCESSORY

Spec

ific

ation

s

CO

2 Out

put

CD-3

CD-6

CD-12

CD-18

CD-36

LP

NG

LP

NG

LP

NG

LP

NG

LP

NG

Cu Ft C

O2 /

Hr

3.2

3.4

6.2

6.4

12.4

12.8

18.6

19.2

37.2

38.4

Poun

ds CO

2 / H

r

.376

.388

.753

.776

1.51

1.56

2.27

2.33

4.54

4.66

Max BT

U / Hr

2183

2172

4366

4343

8733

8686

13098

13029

2619

62

6058

Fuel C

onsum

ptio

n

Cu FT /

Hr

1.03

2.01

2.05

4.02

4.1

8.04

6.15

10.06

12.3

20.12

Tran

sfor

mer

110/

12VD

C 1

Am

p M

ax

TWO YEAR LIMITED WARRANTY

Green Air Products guarantees that this equipment will perform as implied for the purpose it is intended. Green Air

Products warrants the original purchaser of this equipment against defects in mechanical parts and workmanship

for 2 years and electrical parts for 90 days. At our option we will repair or replace defective equipment. Warranty

service is only performed at the factory or authorized service center. Any usage contrary to proper application or

alterations of original construction will void warranty obligations. For further warranty information contact your

dealer or Green Air Products service department.

For professional use by qualified personnel in a facility suited for proper

operation in compliance with local, state and federal laws

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