Desa Portable Generator RN30E CAN User Manual

BLUE FLAME  
VENT-FREE PROPANE AND NATURAL  
GAS GREENHOUSE CO2 GENERATOR  
OWNER’S OPERATION AND INSTALLATION MANUAL  
®
RN30E-CAN - Natural Gas  
RP30E-CAN - Propane/LP Gas  
WARNING:Improperinstallation,adjust-  
ment,alteration,service,ormaintenance  
can cause injury or property damage.  
WARNING: If the information in this manual is not followed  
exactly, a fire or explosion may result causing property  
damage, personal injury, or loss of life.  
Refer to this manual for correct installa-  
— Do not store or use gasoline or other flammable vapors  
tion and operational procedures. For  
and liquids in the vicinity of this or any other appliance.  
assistance or additional information  
consult a qualified installer, service  
agency, or the gas supplier.  
— WHAT TO DO IF YOU SMELL GAS  
• Do not try to light any appliance.  
• Do not touch any electrical switch; do not use any  
phone in your building.  
• Immediately call your gas supplier from a neighbor’s  
phone. Follow the gas supplier’s instructions.  
• If you cannot reach your gas supplier, call the fire  
department.  
WARNING: This is an unvented gas-  
firedappliance.Itusesair(oxygen)from  
the space in which it is installed. Provi-  
sionsforadequatecombustionandven-  
tilation air must be provided. Refer to  
Air for Combustion and Ventilation sec-  
tion on page 3 of this manual.  
— Installation and service must be performed by a quali-  
fied installer, service agency, or the gas supplier.  
WARNING: This appliance must not be washed. Use of a pressure washer, water or liquid cleaning  
solution on this appliance can cause severe personal injury or property damage due to water and/or  
cleaning solution:  
• In electrical components, connections and wires causing electrical shock or component failure.  
• On gas control components causing corrosion which can result in gas leaks and fire or explosion  
from the leak.  
Appliance must be cleaned without being subjected to liquid spray or excessive wetting.  
This appliance is only for use with the type of gas indicated on the rating plate.  
This appliance is not convertible for use with other gases.  
This appliance is not for residential use.  
Save this manual for future reference.  
DESA International • 2701 Industrial Drive • P.O. Box 90004 • Bowling Green, KY • 42102-9004  
 
OWNER’S MANUAL  
PRODUCT  
AIR FOR  
IDENTIFICATION  
COMBUSTION AND  
Ignitor Button  
Control Knob  
VENTILATION  
WARNING: This CO2 genera-  
tor shall not be installed in a con-  
finedspaceunlessprovisionsare  
provided for adequate combus-  
tion and ventilation air. Read the  
following instructions to insure  
proper fresh air for this and other  
fuel-burning appliances in your  
greenhouse.Installinaccordance  
with Can Gas Code B-149.1 and  
2-M95, Section 6.3 Gas Installa-  
tion Code and/or local codes.  
Grill  
Guard  
Heat Shield  
PROVIDING ADEQUATE  
VENTILATION  
Front  
Panel  
Cabinet  
Unconfined Space  
Can Gas Code B-149.1 and 2-M95, Section  
6.3.3 states “An appliance installed for the  
production of carbon dioxide in a green-  
house may take its combustion air from  
inside the greenhouse when the rate of com-  
bustion does not exceed 20 Btuh per ft3 (0.2  
kW per m3) of greenhouse volume and the  
concentration of carbon monoxide in the  
atmosphere does not exceed 35 ppm. The  
concentration of carbon dioxide and carbon  
monoxide shall be verified upon initial  
startup.  
Figure 1 - Vent-Free Propane/LP or Natural Gas Appliance  
LOCAL CODES  
PRODUCT  
FEATURES  
Installanduseappliancewithcare. Followall  
local codes. In the absence of local codes, use  
the latest edition of National Fuel Gas Code Safety Device  
ANSI Z223.1, also known as NFPA 54* and  
This appliance has a pilot with an Oxygen  
Depletion Sensor Shutoff System (ODS).  
TheODS/pilotisarequiredfeatureforvent-  
free CO2 generators. The ODS/pilot shuts  
off the CO2 generator if there is not enough  
fresh air.  
Canadian Gas Code B-149.1 and 2-M95,  
Section 6.3 gas installation code  
.
Confined Space  
*Available from:  
Ventilation air shall be supplied in accor-  
dance with Can Gas Code B-149.1 and 2-  
M95,Sections7.2and7.3and/orlocalcodes.  
American National Standards Institute, Inc.  
1430 Broadway  
New York, NY 10018  
Piezo Ignition System  
This CO2 generator is intended for installa-  
tion in a greenhouse only.  
National Fire Protection Association, Inc.  
Batterymarch Park  
ThisCO2generatorhasapiezoignitor.This  
system requires no matches, batteries, or  
other sources to light appliance.  
This appliance shall not be installed in a  
confined space or unusually tight construc-  
tion unless provisions are provided for ad-  
equate combustion and ventilation air.  
Quincy, MA 02269  
UNPACKING  
1. Remove CO2 generator from carton.  
Produce Storage Areas  
2. Remove all protective packaging ap-  
plied to CO2 generator for shipment.  
Can Gas Code B-149.1 and 2-M95, Section  
6.3.2 states “An appliance used in a produce  
storage area shall take its combustion air  
from outside the storage area”.  
3. Check CO2 generator for any shipping  
damage. If unit is damaged, promptly  
inform dealer where you bought it.  
Continued  
105056  
3
 
BLUE-FLAME VENT-FREE PROPANE/LP AND  
NATURAL GAS GREENHOUSE CO2 GENERATOR  
AIR FOR  
COMBUSTION AND  
VENTILATION  
Continued  
DETERMINING FRESH-AIR FLOW FOR APPLIANCE LOCATION  
Determining if You Have a Confined or Unconfined Space  
Use this worksheet to determine if you have a confined or unconfined space.  
Space: Includes the room in which you will install appliance plus any adjoining rooms with doorless passageways or ventilation grills  
between the rooms.  
1. Determine the volume of the space (length x width x height).  
Length x Width x Height = ____________________ cu. ft. (volume of space)  
Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)  
If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of  
the space.  
2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.  
________________ (volume of space) ÷ 50 cu. ft. = (Maximum Btu/Hr the space can support)  
Example: 2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 51,200 (maximum Btu/Hr the space can support)  
3. Add the Btu/Hr of all fuel burning appliances in the space.  
CO2 generator  
Gas water heater*  
Gas furnace  
______________________ Btu/Hr  
______________________ Btu/Hr  
______________________ Btu/Hr  
______________________ Btu/Hr  
Example:  
Gas water heater  
CO2 generator  
40,000 Btu/Hr  
30,000 Btu/Hr  
+
Vented gas heater  
Total  
=
70,000 Btu/Hr  
Other gas appliances*  
Total  
+
=
______________________ Btu/Hr  
______________________ Btu/Hr  
* Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.  
4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.  
_____________ Btu/Hr (maximum the space can support)  
_____________ Btu/Hr (actual amount of Btu/Hr used)  
Example: 51,200 Btu/Hr (maximum the space can support)  
70,000 Btu/Hr (actual amount of Btu/Hr used)  
The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support.  
You must provide additional fresh air. Your options are as follows:  
A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoin-  
ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 5.  
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 5.  
C. Install a lower Btu/Hr appliance, if lower Btu/Hr size makes room unconfined.  
If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no  
additional fresh air ventilation.  
WARNING: If the area in which the CO2 generator may be operated is smaller than that defined as an  
unconfined space or if the building is of unusually tight construction, provide adequate combustion and  
ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1, 1992, Section 5.3,  
Canadian Gas Code B-149.1 and 2-M95, Section 7.2 and 7.3, or applicable local codes.  
Continued  
105056  
4
 
OWNER’S MANUAL  
AIR FOR  
COMBUSTION AND  
VENTILATION  
Continued  
VENTILATION AIR  
12"  
Ventilation Air From Inside  
Building  
Thisfreshairwouldcomefromanadjoining  
unconfined space. When ventilating to an  
adjoining unconfined space, you must pro-  
vide two permanent openings: one within  
12" of the ceiling and one within 12" of the  
floor on the wall connecting the two spaces  
(see options 1 and 2, Figure 2). You can also  
remove door into adjoining room (see op-  
tion 3, Figure 2). Follow the National Fuel  
Gas Code NFPA 54/ANSI Z223.1, Section  
5.3, Air for Combustion and Ventilation or  
Canadian Gas Code B-149.1 and 2-M95,  
Section 7.2 and 7.3 and/or applicable local  
codes for required size of ventilation grills  
or ducts.  
Ventilation Grills  
Into Adjoining Room,  
Option 2  
Ventilation  
Grills  
into Adjoining  
Room,  
Or  
Remove  
Door into  
Adjoining  
Room,  
Option 1  
Option 3  
12"  
WARNING: Rework work-  
sheet, adding the space of the  
adjoining unconfined space. The  
combined spaces must have  
enough fresh air to supply all  
appliances in both spaces.  
Figure 2 - Ventilation Air From Inside Building If Applicable  
Ventilation Air From Outdoors  
Outlet  
Air  
Provide extra fresh air by using ventilation  
grills or ducts. You must provide two per-  
manent openings: one within 12" of the  
ceiling and one within 12" of the floor.  
Connect these items directly to the outdoors  
orspacesopentotheoutdoors.Thesespaces  
include attics and crawl spaces. Follow the  
National Fuel Gas Code NFPA 54/ANSI  
Z223.1,Section5.3,AirforCombustionand  
Ventilation or Canadian Gas Code B-149.1  
and 2-M95, Section 7.2 and 7.3 and/or appli-  
cable local codes for required size of venti-  
lation grills or ducts.  
Inlet  
Air  
Figure 3 - Ventilation Air From Outdoors  
105056  
5
 
BLUE-FLAME VENT-FREE PROPANE/LP AND  
NATURAL GAS GREENHOUSE CO2 GENERATOR  
INSTALLATION  
• where flammable objects are  
less than 36 inches from the  
NOTICE: The intended use of this  
front, top, or sides of the appli-  
applianceisthegenerationofcar-  
ance  
bon dioxide inside greenhouses  
• in high traffic areas  
for plant production.  
• in windy or drafty areas  
Mounting  
Bracket  
NOTICE: A qualified service per-  
son must install appliance. Fol-  
low all local codes.  
CEILING  
Figure 5 - Mounting Bracket Location  
Removing Front Panel Of CO2  
Generator  
1. Remove two screws near bottom cor-  
ners of front panel.  
36"  
Minimum  
CHECK GAS TYPE  
6"  
Minimum  
From  
Sides Of  
Heater  
Only use gas type specified on rating plate.  
If your gas supply is different, do not install  
appliance. Call dealer where you bought  
appliance for proper type appliance.  
2. Lift straight up on grill guard until it stops.  
Grill guard will slide up about 1/4".  
Left  
Side  
Right  
Side  
3. Pull bottom of front panel forward, then  
down.  
INSTALLATION ITEMS  
4. Remove cardboard packing from grill  
and heat shield.  
Before installing appliance, make sure you  
have the items listed below.  
• external regulator (Propane/LP Only,  
supplied by installer)  
• piping (check local codes)  
• sealant (resistant to propane/LP gas)  
• manual shutoff valve *  
Minimum To Floor  
*
FLOOR  
*16 3/4"  
Figure4-MountingClearancesAsViewed  
From Front of Appliance  
IMPORTANT:Vent-freeCO2generatorsadd  
carbon dioxide and moisture to the air.  
• ground joint union  
• test gauge connection * (see Figure 13,  
page 8)  
• sediment trap  
• tee joint  
CAUTION:  
• appliance pilot and burner  
must be at least 18 inches  
above floor  
Figure 6 - Removing Front Panel Of CO2  
Generator  
• pipe wrench  
• locate appliance where mov-  
ing vehicle will not hit it  
* An A.G.A. or C.G.A. design certified  
manual shutoff valve with 1/8" NPT tap is  
an acceptable alternative to test gauge con-  
nection. Purchase the optional A.G.A. or  
C.G.A. designcertifiedmanualshutoffvalve  
from your dealer. See Accessories, page 15.  
Methods For Attaching  
Mounting Bracket To Wall  
Forconvenienceandefficiency,installCO2  
generator  
Only use last hole on each end of mounting  
bracket to attach bracket to wall. These two  
• where there is easy access for operation, holes are 16 inches apart from their centers.  
inspection, and service  
Attach mounting bracket to wall in one of  
two ways.  
LOCATING APPLIANCE  
• where strong wind gusts from an open  
Thisapplianceisdesignedtobemountedon  
a wall.  
door or ventilator can not blow directly 1. Attaching to wall stud  
into appliance.  
2. Attaching to wall anchor  
WARNING:Maintainthemini-  
mumclearancesshowninFigure  
4.Ifyoucan,providegreaterclear-  
ancesfromfloor,ceiling,andjoin-  
ing wall.  
Attaching to Wall Stud: This method  
INSTALLING APPLIANCE TO  
WALL  
providesthestrongesthold.Insertmounting  
screws through mounting bracket and into  
wall studs.  
Mounting Bracket  
AttachingtoWallAnchor: Thismethod  
allows you to attach mounting bracket to  
hollow walls (wall areas between studs) or  
to solid walls (concrete or masonry).  
The mounting bracket is located on back  
panel of appliance. It has been taped there  
forshipping.Removemountingbracketfrom  
back panel.  
WARNING: Never install the  
CO2 generator  
• in a home  
Decidewhichmethodbettersuitsyourneeds.  
Eithermethodwillprovideasecureholdfor  
• in a recreational vehicle  
the mounting bracket.  
Continued  
105056  
6
 
OWNER’S MANUAL  
Attaching to Wall Anchor  
Method  
For attaching mounting bracket to hollow  
walls (wall areas between studs) or solid  
walls (concrete or masonry)  
INSTALLATION  
Horizontal Slots  
Continued  
Marking Screw Locations  
1. Tape mounting bracket to wall where  
appliance will be located. Make sure  
mounting bracket is level.  
1. Drill holes at marked locations using  
5/16" drill bit. For solid walls (concrete  
or masonry), drill at least 1" deep.  
WARNING:Maintainminimum  
clearances shown in Figure 7. If  
you can, provide greater clear-  
ancesfromfloorandjoiningwall.  
2. Fold wall anchor as shown in Figure 8.  
Mounting Bracket  
(attached to wall)  
Stand-Out Tab  
3. Insert wall anchor (wings first) into  
hole. Tap anchor flush to wall.  
Figure 10 - Mounting Appliance Onto  
Mounting Bracket  
4. For thin walls (1/2" or less), insert red  
key into wall anchor. Push red key to  
“pop” open anchor wings.  
Installing Bottom Mounting  
2. Mark screw locations on wall (see Fig-  
ure 7).  
Screws  
IMPORTANT: Do not hammer key!  
1. Locate two bottom mounting holes.  
These holes are near bottom on back  
panel of appliance (see Figure 11).  
Note: Only mark last hole on each end  
of mounting bracket. Insert mounting  
screws through these holes only.  
For thick walls (over 1/2" thick) or solid  
walls, do not pop open wings.  
2. Mark screw locations on wall.  
5. Place mounting bracket onto wall. Line  
up last hole on each end of bracket with  
wall anchors.  
3. Remove tape and mounting bracket  
from wall.  
3. Remove appliance from mounting  
bracket.  
11"  
Min.  
16"  
6. Insert mounting screws through bracket  
and into wall anchors.  
4. If installing bottom mounting screws into  
hollow or solid wall, install wall anchors.  
Follow steps 1 through 4 under Attach-  
ing To Wall Anchor Method, column 1.  
7. Tighten screws until mounting bracket  
is firmly fastened to wall.  
Only Insert Mounting  
Screws Through Last  
Hole On Each End  
32 1/2"  
Min.  
If installing bottom mounting screw  
into wall stud, drill holes at marked lo-  
cations using 9/64" drill bit.  
AdjoingWal  
5. Replace appliance onto mounting  
bracket.  
Floor  
Figure 8 - Folding Anchor  
6. Place spacers between bottom mount-  
ing holes and wall anchor or drilled hole.  
Figure 7 - Mounting Bracket Clearances  
7. Hold spacer in place with one hand.  
With other hand, insert mounting screw  
through bottom mounting hole and  
spacer. Place tip of screw in opening  
of wall anchor or drilled hole.  
Attaching Mounting Bracket To  
Wall  
Note: Wall anchors, mounting screws, and  
spacers are in hardware package. The hard-  
ware package is provided with appliance.  
Figure 9 - Popping Open Anchor Wings  
For Thin Walls  
8. Tighten both screws until appliance is  
firmly secured to wall. Do not over  
tighten.  
Attaching to Wall Stud Method  
Placing Appliance On Mounting  
Bracket  
1. Locate two horizontal slots on back  
panel of appliance.  
Note: Do not replace front panel at this  
time. Replace front panel after making  
gas connections and checking for leaks  
(see pages 8 and 9).  
Forattachingmountingbrackettowallstuds  
1. Drill holes at marked locations using  
9/64" drill bit.  
2. Place mounting bracket onto wall. Line  
up last hole on each end of bracket with  
holes drilled in wall.  
2. Place appliance onto mounting bracket.  
Slide horizontal slots onto stand-out  
tabs on mounting bracket.  
3. Insert mounting screws through bracket  
and into wall studs.  
4. Tighten screws until mounting bracket  
is firmly fastened to wall studs.  
Figure 11 - Installing Bottom Mounting  
Screws  
105056  
7
 
BLUE-FLAME VENT-FREE PROPANE/LP AND  
NATURAL GAS GREENHOUSE CO2 GENERATOR  
Installation must include a manual shutoff  
INSTALLATION  
WARNING: Never connect  
appliance to private (non-utility)  
gas wells. This gas is commonly  
known as wellhead gas.  
valve, union, and plugged 1/8" NPT tap.  
Locate NPT tap within reach for test gauge  
hook up. NPT tap must be upstream from  
appliance (see Figure 13).  
Continued  
CONNECTING TO GAS  
SUPPLY  
Apply pipe joint sealant lightly to male  
threads. This will prevent excess sealant  
from going into pipe. Excess sealant in pipe  
could result in clogged appliance valves.  
Natural Gas Only: IMPORTANT:Check gas  
linepressurebeforeconnectingapplianceto  
gasline.Gaslinepressuremustbenogreater  
than 10.5 inches of water. If gas line pres-  
sure is higher, appliance regulator damage  
could occur. Minimum inlet pressure shall  
be no less than 4 inches of water.  
NOTICE: A qualified service per-  
sonmustconnectCO2generator  
to gas supply. Follow all local  
codes.  
CAUTION:Usepipejointseal-  
ant that is resistant to liquid pe-  
troleum (LP) gas.  
CAUTION: (Propane/LP Only)  
Never connect appliance directly  
to the propane/LP supply. This  
appliance requires an external  
regulator(notsupplied).Installthe  
external regulator between the  
applianceandpropane/LPsupply.  
CAUTION: Use only new,  
black iron or steel pipe. Inter-  
nally-tinned copper tubing may  
be used in certain areas. Check  
yourlocalcodes. Usepipeof1/2"  
diameter or greater to allow  
proper gas volume to appliance.  
If pipe is too small, undue loss of  
pressure will occur.  
Installsedimenttrapinsupplylineasshown  
in Figure 13. Locate sediment trap where it  
is within reach for cleaning. Locate sedi-  
ment trap where trapped matter is not likely  
to freeze. A sediment trap traps moisture  
and contaminants. This keeps them from  
going into appliance controls. If sediment  
trap is not installed or is installed wrong,  
appliance may not run properly.  
Propane/LPOnly:Theinstallermustsupply  
anexternalregulator.Theexternalregulator  
will reduce incoming gas pressure. You  
must reduce incoming gas pressure to be-  
tween 11 and 14 inches of water. If you do  
not reduce incoming gas pressure, appli-  
ance regulator damage could occur. Install  
external regulator with the vent pointing  
down as shown in Figure 12. Pointing the  
vent down protects it from freezing rain or  
sleet. Minimum inlet pressure shall be no  
less than 11 inches of water.  
IMPORTANT: Hold pressure regulator  
with wrench when connecting it to gas pip-  
ing and/or fittings.  
Typical Inlet Pipe Diameters  
30,000 Btu/Hr models 1/2" or greater  
Note: Burner bracket  
not shown for clarity  
Pressure  
Regulator  
Propane/  
LP Supply  
Tank  
3/8" NPT  
Pipe  
Nipple  
Cabinet  
Ground Joint  
Union  
External  
Regulator  
Tee Joint  
Propane/LP Only:  
Typical Inlet  
Pipe From  
Manual  
Shutoff  
Valve *  
Reducer Bushing  
to 1/8" NPT  
Test  
Gauge  
Connection *  
External Regulator  
(11" W.C. to 14"  
W.C. Pressure)  
1/8" NPT Plug Tap  
Tee Joint  
Vent  
Pointing  
Down  
Natural Only:  
Typical Inlet  
Pipe From Gas  
Meter  
Sediment  
Trap  
Pipe Nipple  
Cap  
3" Minimum  
(4" W.C. to 10.5"  
W.C. Pressure)  
Figure 12 - External Regulator with Vent  
Pointing Down (Propane/LP Only)  
Figure 13 - Gas Connection  
* An A.G.A. or G.G.A. design certified manual shutoff valve with 1/8" NPT tap is an  
acceptable alternative to test gauge connection. Purchase the optional A.G.A. or G.G.A.  
design certified manual shutoff valve from your dealer. See Accessories, page 15.  
Continued  
105056  
8
 
OWNER’S MANUAL  
TestPressuresEqualToorLessThan  
1/2 PSIG  
PROPANE/LP  
INSTALLATION  
Continued  
Control Valve  
Location  
1. Close manual shutoff valve (see Fig-  
ure 14).  
Propane/  
LP Supply  
Tank  
CHECKING GAS  
CONNECTIONS  
2. Pressurize supply piping system by ei-  
ther using compressed air or an inert gas.  
3. Check all joints from propane/LP sup-  
ply tank or main gas valve to manual  
shutoff valve (see Figure 15). Apply  
mixture of liquid soap and water to gas  
joints. Bubbles forming show a leak.  
WARNING: Test all gas pip-  
ing and connections for leaks  
after installing or servicing. Cor-  
rect all leaks at once.  
4. Correct all leaks at once.  
Manual  
Shutoff Valve  
WARNING:Neveruseanopen  
flame to check for a leak. Apply a  
mixture of liquid soap and water  
toalljoints.Bubblesformingshow  
a leak. Correct all leaks at once.  
Pressure Testing Appliance Gas  
Connections  
1. Open manual shutoff valve (see Fig-  
ure 14).  
NATURAL GAS  
2. Open propane/LP supply tank valve  
(Propane/LP Only) or main gas valve  
(Natural Gas Only) located on or near  
gas meter.  
CAUTION: (Propane/LP Only)  
Make sure external regulator has  
been installed between propane/  
LP supply and appliance. See  
guidelines under Connecting to  
Gas Supply, page 8.  
Control Valve  
Location  
3. Make sure control knob of appliance is  
in the OFF position.  
Gas Meter  
4. Check all joints from manual shutoff  
valve to control valve (see Figure 15).  
Apply mixture of liquid soap and wa-  
ter to gas joints. Bubbles forming show  
a leak.  
Pressure Testing Gas Supply  
Piping System  
Note: Pressure testing shall be performed in  
accordance with Canadian Gas Code B-  
149.1 and 2-M95, Section 5.22.  
Manual  
Shutoff  
Valve  
5. Correct all leaks at once.  
6. Light appliance (see Operating CO2  
Generator, page 10). Check the rest of  
the internal joints for leaks.  
TestPressuresInExcessOf1/2PSIG  
1. Disconnect appliance and its individual  
manual shutoff valve from gas supply  
piping system. Pressures in excess of 1/2  
PSIG will damage appliance regulator.  
Figure 15 - Checking Gas Joints  
7. Turn off appliance (see To Turn Off Gas  
to Appliance, page 10).  
8. Replace front panel.  
2. Cap off open end of gas pipe where  
manual shutoff valve was connected.  
Open  
3. Pressurize supply piping system by ei-  
ther using compressed air or an inert gas.  
Manual  
Shutoff  
Valve  
4. Check all joints of gas supply piping  
system. Apply mixture of liquid soap  
and water to gas joints. Bubbles form-  
ing show a leak.  
Closed  
5. Correct all leaks at once.  
Figure 14 - Manual Shutoff Valve  
105056  
9
 
BLUE-FLAME VENT-FREE PROPANE/LP AND  
NATURAL GAS GREENHOUSE CO2 GENERATOR  
3. Turn control knob clockwise  
OPERATING CO2  
CAUTION: Do not try to ad-  
to the OFF position (see Figure 16).  
just high/low level by using the  
GENERATOR  
4. Wait five (5) minutes to clear out any  
manual shutoff valve.  
gas. Then smell for gas including  
near the floor. If you smell gas,  
STOP! Follow “B” in the safety in-  
formation at left. If you don’t smell  
gas, go to the next step.  
FOR YOUR  
SAFETY READ  
Control Knob  
Ignitor Button  
PILOT  
BEFORE LIGHTING  
LOW  
OFF  
WARNING: If you do not fol-  
low these instructions exactly, a  
fireorexplosionmayresultcaus-  
ing property damage, personal  
injury or loss of life.  
5. Press in control knob and turn coun-  
HIGH  
IGNITOR  
terclockwise  
to the PILOT  
position. Keep control knob pressed  
in for five (5) seconds (see Figure 16).  
Figure 16 - Control Knob In The OFF  
Position  
Note: You may be running this ap-  
pliance for the first time after hook-  
ing up to gas supply. If so, the con-  
trol knob may need to be pressed in  
for 30 seconds. This will allow air to  
bleed from the gas system.  
Ignitor Electrode  
Thermocouple  
Pilot Burner  
A. This appliance has a pilot which must  
be lighted by hand. When lighting the  
pilot, follow these instructions  
exactly.  
B. BEFORE LIGHTING smell all  
around the appliance area for gas. Be  
sure to smell next to the floor because  
some gas is heavier than air and will  
settle on the floor.  
• If control knob does not pop up  
when released, contact a qualified  
service person or gas supplier for  
repairs.  
6. With control knob pressed in, push  
down and release ignitor button. This  
will light pilot. The pilot is attached  
to the front of burner. The burner  
and pilot are located behind the heat  
Figure 17 - Pilot  
WHAT TO DO IF YOU SMELL  
GAS  
• Do not try to light any appliance.  
TO TURN OFF GAS  
TO APPLIANCE  
Do not touch any electric switch; do  
not use any phone in your building.  
shield. If needed, keep pressing igni- Shutting Off Appliance  
tor button until pilot lights.  
• Immediately call your gas supplier  
from a neighbor’s phone. Follow  
the gas supplier’s instructions.  
• If you cannot reach your gas sup-  
plier, call the fire department.  
1. Turn control knob clockwise  
Note: If pilot does not stay lit, refer  
to Troubleshooting, pages 12 through  
14. Also contact a qualified service  
person or gas supplier for repairs.  
Until repairs are made, light pilot  
with match. To light pilot with match,  
see Manual Lighting Procedure.  
to the PILOT position.  
2. Press in control knob and turn clock-  
wise  
to the OFF position.  
C. Use only your hand to push in or turn  
the gas control knob. Never use tools.  
If the knob will not push in or turn  
by hand, don’t try to repair it, call a  
qualified service technician or gas  
supplier. Force or attempted repair  
may result in a fire or explosion.  
Shutting Off Burner Only (pilot  
stays lit)  
Turn control knob clockwise  
the PILOT position.  
to  
7. Keep control knob pressed in for 30  
seconds after lighting pilot. After 30  
seconds, release control knob.  
MANUAL LIGHTING  
PROCEDURE  
Note: If pilot goes out, repeat steps  
3 through 7.  
D. Do not use this appliance if any part  
has been under water. Immediately  
call a qualified service technician to  
inspect the appliance and to replace  
any part of the control system and  
any gas control which has been un-  
der water.  
1. Remove front panel (see Figure 6,  
page 6).  
8. Turn control knob counterclockwise  
to the LOW position. The  
main burner should light. Set control  
knob to any level between HIGH and  
LOW. To turn control knob from  
LOW to a higher setting, press in the  
control knob and turn counterclock-  
2. Follow steps 1 through 5 under Light-  
ing Instructions.  
3. With control knob pressed in, strike  
match. Hold match to pilot until pi-  
lot lights.  
LIGHTING  
INSTRUCTIONS  
wise  
.
4. Keep control knob pressed in for 30  
seconds after lighting pilot. After 30  
seconds, release control knob.  
Note: Both HIGH and LOW are  
locked positions. You must press in  
control knob before turning it from  
these positions.  
1. STOP! Read the safety information  
above.  
5. Replace front panel.  
2. Make sure manual shutoff valve is  
fully open.  
105056  
10  
 
OWNER’S MANUAL  
BURNER FLAME PATTERN  
INSPECTING  
BURNER  
CLEANING AND  
MAINTENANCE  
WARNING:Turnoffappliance  
and let cool before cleaning.  
Figure 20 shows a correct burner flame  
pattern.Figure21showsanincorrectburner  
flame pattern. The incorrect burner flame  
patternshowsyellowtippingoftheflame. It  
also shows the flame higher than 1/2 the  
heat shield height.  
Check pilot flame pattern and burner flame  
pattern often.  
PILOT FLAME PATTERN  
Figure 18 shows a correct pilot flame pat-  
tern. Figure 19 shows an incorrect pilot  
flame pattern. The incorrect pilot flame is  
not touching the thermocouple. This will  
cause the thermocouple to cool. When the  
thermocouple cools, the appliance will shut  
down.  
Ifburnerflamepatternisincorrect,asshown  
in Figure 21  
CAUTION:Youmustkeepcon-  
trolareas,burner,andcirculating  
air passageways of appliance  
clean. Inspect these areas of ap-  
pliance before each use. Have  
CO2 generator inspected yearly  
byaqualifiedserviceperson. Ap-  
pliance may need more frequent  
cleaning due to excessive saw-  
dust, cobwebs, etc.  
• turn appliance off (see To Turn Off Gas  
to Appliance, page 10).  
see Troubleshooting, pages 12 through 14  
If pilot flame pattern is incorrect, as shown  
in Figure 19  
WARNING: If yellow tipping  
occurs,yourCO2generatorcould  
produce increased levels of car-  
bon monoxide. If burner flame  
patternshowsyellowtipping,fol-  
low instructions at bottom of this  
page.  
• turn appliance off (see To Turn Off Gas  
to Appliance, page 10)  
ODS/PILOT AND BURNER  
• Use a vacuum cleaner, pressurized air, or  
small, soft bristled brush to clean.  
see Troubleshooting, pages 12 through 14  
Pilot Burner  
CABINET  
NOTICE: Do not mistake orange  
flames with yellow tipping. Dirt  
or other fine particles enter the  
appliance and burn causing brief  
patches of orange flame.  
Thermocouple  
Air Passageways  
• Use a vacuum cleaner or pressurized air  
to clean.  
Figure 18 - Correct Pilot Flame Pattern  
Exterior  
• Use a soft cloth dampened with a mild  
soap and water mixture. Wipe the cabi-  
net to remove dust.  
Pilot Burner  
Thermocouple  
1/2 HEAT SHIELD  
HEIGHT  
Figure 19 - Incorrect Pilot Flame Pattern  
CORRECT FLAME PATTERN  
AT HIGH POSITION  
Figure 20 - Correct Burner Flame Pattern  
Yellow  
Tipping  
1/2 HEAT SHIELD  
HEIGHT  
INCORRECT FLAME PATTERN  
AT HIGH POSITION  
Figure21-IncorrectBurnerFlamePattern  
105056  
11  
 
BLUE-FLAME VENT-FREE PROPANE/LP AND  
NATURAL GAS GREENHOUSE CO2 GENERATOR  
TROUBLESHOOTING  
Note: All troubleshooting items are listed  
WARNING: Turn off and  
unplug appliance and let cool  
before servicing. Only a quali-  
fied service person should ser-  
vice and repair appliance.  
CAUTION: Never use a wire,  
needle, or similar object to clean  
ODS/pilot.ThiscandamageODS/  
pilot unit.  
in order of operation.  
OBSERVED PROBLEM  
POSSIBLE CAUSE  
REMEDY  
When ignitor button is pressed, there is no 1. Ignitor electrode positioned wrong  
spark at ODS/pilot 2. Ignitor electrode broken  
1. Replace ignitor  
2. Replace ignitor  
3. Ignitor electrode not connected to igni- 3. Reconnect ignitor cable  
tor cable  
4. Ignitor cable pinched or wet  
4. Free ignitor cable if pinched by any  
metal or tubing. Keep ignitor cable dry  
5. Broken ignitor cable  
6. Bad piezo ignitor  
5. Replace ignitor cable  
6. Replace piezo ignitor  
When ignitor button is pressed, there is 1. Gassupplyturnedofformanualshutoff 1. Turn on gas supply or open manual  
spark at ODS/pilot but no ignition  
valve closed  
shutoff valve  
2. Control knob not in PILOT position  
2. Turn control knob to PILOT position  
3. Control knob not pressed in while in 3. Press in control knob while in PILOT  
PILOT position  
position  
4. Air in gas lines when installed  
4. Continue holding down control knob.  
Repeat igniting operation until air is  
removed  
5. Depletedgassupply(Propane/LPOnly) 5. Contactlocalpropane/LPgascompany  
6. ODS/pilot is clogged  
6. Clean ODS/pilot (see Cleaning and  
Maintenance,page11)orreplaceODS/  
pilot assembly  
7. Gas regulator setting is not correct  
7. Replace gas regulator  
ODS/pilot lights but flame goes out when 1. Control knob not fully pressed in  
1. Press in control knob fully  
control knob is released  
2. Controlknobnotpressedinlongenough 2. After ODS/pilot lights, keep control  
knob pressed in 30 seconds  
3. Manual shutoff valve not fully open  
4. Thermocoupleconnectionlooseatcon- 4. Hand tighten until snug, then tighten 1/4  
trol valve turn more  
3. Fully open manual shut-off valve  
5. Pilotflamenottouchingthermocouple, 5. A) Contact local gas company  
which allows thermocouple to cool,  
causing pilot flame to go out. This  
problemcouldbecausedbyoneorboth  
of the following:  
B) Clean ODS/pilot (see Cleaning and  
Maintenance,page11)orreplaceODS/  
pilot assembly  
A) Low gas pressure  
B) Dirty or partially clogged ODS/  
pilot  
6. Thermocouple damaged  
7. Control valve damaged  
6. Replace thermocouple  
7. Replace control valve  
Burner does not light after ODS/pilot is lit  
1. Burner orifice is clogged  
1. Clean burner (see Cleaning and Main-  
tenance, page 11) or replace burner  
orifice  
2. Burner orifice diameter is too small  
3. Inlet gas pressure is too low  
2. Replace burner orifice  
3. Contact local gas company  
105056  
12  
 
OWNER’S MANUAL  
TROUBLESHOOTING  
Continued  
OBSERVED PROBLEM  
POSSIBLE CAUSE  
REMEDY  
Delayed ignition of burner  
1. Manifold pressure is too low  
2. Burner orifice is clogged  
1. Contact local gas company  
2. Clean burner (see Cleaning and Main-  
tenance, page 11) or replace burner  
orifice  
Burner backfiring during combustion  
1. Burner orifice is clogged or damaged  
1. Clean burner (see Cleaning and Main-  
tenance, page 11) or replace burner  
orifice  
2. Inlet gas pressure is too low  
3. Burner damaged  
2. Contact local gas company  
3. Replace burner  
4. Gas regulator defective  
4. Replace gas regulator  
Yellow flame during burner combustion  
Slightsmokeorodorduringinitialoperation  
1. Not enough air  
1. Check burner for dirt and debris. If  
found, clean burner (see Cleaning and  
Maintenance, page 11)  
2. Contact local gas company  
3. Replace gas regulator  
2. Inlet gas pressure is too low  
3. Gas regulator defective  
1. Residuesfrommanufacturingprocesses  
1. Problem will stop after a few hours of  
operation  
Appliance produces a whistling noise when  
burner is lit  
1. TurningcontrolknobtoHIGHposition  
when burner is cold  
1. Turn control knob to LOW position  
and let warm up for a minute  
2. Air in gas line  
2. Operate burner until air is removed  
from line. Have gas line checked by  
local gas company  
3. Air passageways on appliance blocked  
4. Dirtyorpartiallycloggedburnerorifice  
3. Observe minimum installation clear-  
ances (see Figure 4, page 6)  
4. Clean burner (see Cleaning and Main-  
tenance, page 11) or replace burner  
orifice  
Continued  
105056  
13  
 
BLUE-FLAME VENT-FREE PROPANE/LP AND  
NATURAL GAS GREENHOUSE CO2 GENERATOR  
TROUBLESHOOTING  
Continued  
WARNING: If you smell gas  
WARNING ICON  
G
001  
• Shut off gas supply.  
• Do not try to light any appliance.  
• Do not touch any electrical switch; do not use any phone in your  
building.  
• Immediately call your gas supplier from a neighbor’s phone. Follow  
the gas supplier’s instructions.  
• If you cannot reach your gas supplier, call the fire department.  
IMPORTANT: Operating appliance where impurities in air exist may create odors.  
Cleaning supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet  
or textiles, etc., create fumes. These fumes may mix with combustion air and create odors.  
OBSERVED PROBLEM  
POSSIBLE CAUSE  
REMEDY  
Applianceproducesaclicking/tickingnoise 1. Metal expanding while heating or con- 1. This is common with most CO2 gen-  
just after burner is lit or shut off  
tracting while cooling  
erators. If noise is excessive, contact  
qualified service person  
Appliance produces unwanted odors  
1. Appliance burning vapors from paint, 1. Ventilate room. Stop using odor caus-  
solvents, glues, etc. See IMPORTANT  
statement above  
ingproductswhileapplianceisrunning  
2. Low fuel supply (Propane/LP Only)  
2. Refill supply tank  
3. Gas leak. See Warning statement 3. Locateandcorrectallleaks(seeCheck-  
at top of page  
ing Gas Connections, page 9)  
Appliance shuts off in use (ODS operates)  
1. Not enough fresh air is available  
2. Low line pressure  
1. Openwindowand/ordoorforventilation  
2. Contact local gas company  
3. ODS/pilot is partially clogged  
3. Clean ODS/pilot (see Cleaning and  
Maintenance, page 11)  
Gas odor even when control knob is in OFF 1. Gas leak. See Warning statement 1. Locateandcorrectallleaks(seeCheck-  
position  
at top of page  
ing Gas Connections, page 9)  
2. Control valve defective  
2. Replace control valve  
Gas odor during combustion  
1. Foreign matter between control valve 1. Take apart gas tubing and remove for-  
and burner eign matter  
2. Gas leak. See Warning statement 2. Locateandcorrectallleaks(seeCheck-  
at top of page ing Gas Connections, page 9)  
Moisture/condensationnoticedonwindows 1. Notenoughcombustion/ventilationair. 1. Refer to Air for Combustion and Venti-  
lation requirements (page 3)  
105056  
14  
 
OWNER’S MANUAL  
SPECIFICATIONS  
REPLACEMENT  
PARTS  
Note: Use only original replacement parts.  
Thiswillprotectyourwarrantycoveragefor  
parts replaced under warranty.  
RP30E-CAN  
RN30E-CAN  
15,000/30,000  
Natural Only  
Piezo  
Btu (Variable)  
Type Gas  
15,000/30,000  
Propane/LP Only  
Piezo  
Ignition  
Pressure Regulator Setting  
Inlet Gas Pressure (inches of water)  
Maximum  
8" W.C.  
3" W.C.  
Parts Under Warranty  
Contact authorized dealers of this product.  
If they can’t supply original replacement  
part(s) contact DESA International’s Tech-  
nical Service Department at 1-800-323-  
5190.  
14"  
11"  
10.5"  
4"  
Minimum  
Dimensions, Inches (H x W x D)  
Appliance  
When calling, have ready  
• your name  
23.5 x 25.9 x 8.0  
26 x 27.75 x 9.63  
23.5 x 25.9 x 8.0  
26 x 27.75 x 9.63  
Carton  
• your address  
Weight (pounds)  
Appliance  
• model number of your CO2 generator  
• how appliance was malfunctioning  
30  
35  
30  
35  
Shipping  
• type of gas used (propane/LP or natural  
gas)  
• purchase date  
TECHNICAL  
SERVICE  
ACCESSORIES  
Usually, we will ask you to return the defec-  
tive part to the factory.  
PurchasethisCO2generatoraccessoryfrom  
your local dealer. If they can not supply this  
accessorycontactDESAInternational’sParts  
Department at 1-800-972-7879 for referral  
information. You can also write to the ad-  
dress listed on the back page of this manual.  
You may have further questions about in-  
stallation, operation, or troubleshooting. If  
so, contact DESA International’s Technical  
Service Department at 1-800-323-5190.  
Parts Not Under Warranty  
Contact authorized dealers of this product.  
If they can’t supply original replacement  
part(s) contact DESA International’s Parts  
Department at 1-800-972-7879 for referral  
information.  
SERVICE HINTS  
When Gas Pressure Is Too Low  
• pilot will not stay lit  
When calling, have ready  
• model number of your CO2 generator  
• the replacement part number  
• burner will have delayed ignition  
• appliance will not produce maximum CO2  
• (Propane Only) propane/LP gas supply  
may be low  
When Gas Quality Is Bad  
• pilot will not stay lit  
• burner will produce flames and soot  
• appliance will backfire when lit  
MANUAL SHUT OFF VALVE -  
GA5010  
Youmayfeelyourgaspressureistoolowor  
gas quality is bad. If so, contact your local  
propane/LP gas supplier.  
Manual shutoff valve with 1/8" NPT tap.  
105056  
15  
 
BLUE-FLAME VENT-FREE PROPANE/LP AND  
NATURAL GAS GREENHOUSE CO2 GENERATOR  
21  
ILLUSTRATED  
22  
PARTS  
25  
BREAKDOWN  
26  
14  
RP30E-CAN  
RN30E-CAN  
8
20  
23  
11  
19  
10  
24  
12  
4
8
17  
13  
16  
9
18  
7
5
3
6
15  
6
2
10-1  
10-2  
1
ODS/PILOT  
105056  
16  
 
OWNER’S MANUAL  
This list contains replaceable parts used in your appliance. When ordering parts, follow the instructions  
listed under Replacement Parts on page 17 of this manual.  
PARTS LIST  
RP30E-CAN  
RN30E-CAN  
KEY  
NO.  
PART  
NUMBER  
DESCRIPTION  
QTY.  
1
2
3
4
5
6
7
8
9
10  
098304-01  
098345-01AC  
103476-02  
101108-01  
104658-01BR  
M11084-26  
104102-02BR  
098271-03  
098249-01  
099059-04  
100701-01  
Screw, #10 x 3/8"  
Front Panel  
Grill Guard  
Clip, Grill Guard  
Heat Shield  
Screw, #10 x 3/8"  
Deflector Unit  
2
1
1
2
1
6
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
Ignitor Cable  
Nut, M5  
ODS/Pilot, L.P.  
ODS/Pilot, N.G.  
Thermocouple  
Ignitor Electrode  
Burner  
3/16" Pilot Tubing  
Injector, L.P.  
Injector, N.G.  
Mounting Bracket  
Pressure Regulator, L.P.  
Pressure Regulator, N.G.  
Pilot Shield  
3/8" Outlet (Burner) Tubing  
3/8" Inlet Tubing  
Pressure Tap Fitting  
Control Valve, L.P.  
Control Valve, N.G.  
Cabinet  
10-1 098514-01  
10-2 098594-01  
11  
12  
13  
103447-01  
099387-05  
103845-03  
103845-04  
099066-01  
099415-06  
099415-11  
099553-01  
103570-01  
103572-01  
100068-01  
100047-02  
100047-01  
104617-09  
097159-04  
098303-02  
098276-01  
098354-01  
098508-01  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
Piezo Ignitor  
Screw, #8 x 3/8"  
1/8" NPT Plug  
Control Knob  
Valve Retainer Nut  
PARTS AVAILABLE — NOT SHOWN  
098306-02  
099261-02  
100642-01  
Control Position Decal  
Operating Instructions Decal  
Assembly, Hardware  
1
1
1
105056  
17  
 
WARRANTY INFORMATION  
KEEP THIS WARRANTY  
Model  
Serial No.  
Date Purchased  
Always specify model and serial numbers when communicating with the factory.  
We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard  
written warranty. We make no other warranty, expressed or implied.  
LIMITED WARRANTY  
BLUE FLAME VENT-FREE CO2 GENERATOR  
DESA Industries warrants this product to be free from defects in materials and components for two (2) years from the date  
of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all  
applicable instructions. To make a claim under this warranty the Bill of Sale or cancelled check must be presented.  
This warranty is extended only to the original retail purchaser. This warranty covers only the cost of part(s) required to restore  
this appliance to proper operating condition. Warranty part(s) MUST be obtained through authorized dealers of this product  
and/or DESA Industries who will provide original factory replacement parts. Failure to use original factory replacement parts  
voids this warranty. The appliance MUST be installed by a qualified installer in accordance with all local codes and  
instructions furnished with the unit.  
This warranty does not apply to parts that are not in original condition because of normal wear and tear, or parts that fail or  
become damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation.  
Travel, diagnostic cost, labor, transportation and any and all such other costs related to repairing a defective appliance will  
be the responsibility of the owner.  
TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE  
PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND  
LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MER-  
CHANTABILITYANDFITNESSFORAPARTICULARPURPOSETOTWO(2)YEARS FROMTHEDATEOFFIRST  
PURCHASE: AND DESA INDUSTRIES’ LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE  
PRODUCT AND DESA INDUSTRIES SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER  
INCLUDING INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES.  
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or  
consequential damages, so the above limitation on implied warranties, or exclusion or limitation on damages may not apply  
to you.  
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.  
For information about this warranty write:  
105056 01  
DESA INDUSTRIES OF CANADA, INC.  
NOT A UPC  
Mississauga, Ontario, Canada L5N 2K7  
Telephone/Téléphone 905-826-8010  
Fax/Télécopieur 905-826-8236  
105056-01  
REV. A  
09/98  
 

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