Midco J121-DS User Manual

Do not store or use gasoline or other

flammable vapors and liquids in the

vicinity of this or any other appli

-

Installation and service must be per

-

formed by a qualified installer, service

: The following terms are used to identify hazards, safety precautions or special

notations and have standard meanings throughout this manual. When you see the safety alert symbol and one of the

Identifies unsafe practices which would result in minor personal injury or product and property damage.

Installation and Service Instructions

602

8471 15

Printed in USA

The INCINOMITE Model J121-DS gas burner features direct main
flame spark ignition and solid state electronic flame verification.

In the United States, installation must conform with local

codes or, in the absence of local codes, National Fuel
Gas Code , ANSI Z223.1-latest edition(s) available from
American National Standard Institute. Further reference
should be made to the recommendation of your fuel
supplier.

Note: Any additions, changes or conversions required in

order for the gas utilization equipment to satisfactorily
meet the application needs must be made by a MIDCO
distributor (or other qualified agency) using factory
specified and approved parts.

In Canada, installation must conform with local codes or,

in the absence of local codes, with Installation Codes

for Gas Burning Appliances and Equipment, CGA
Standard CAN/CGA 1-B149.1 or 2.

INSTALLER: Inform and demonstrate to the user the
correct operation and maintenance of this gas
utilization equipment. Inform the user of the hazards
of storing flammable liquids and vapors in the vicinity
of this gas utilization equipment and remove such
hazards. CODE COMPLIANCE IS THE SOLE
RESPONSIBILITY OF THE INSTALLER.

USER: Retain this manual for future reference.
If other than routine service or maintenance as
described in this manual is required, contact a
qualified service agency. DO NOT ATTEMPT
REPAIRS. An inadvertent service error could
result in a dangerous condition.

Incinomite

Model J121-DS

Gas Burner

WARNING: If the information in

these instructions is not followed
exactly, a fire or explosion may result,
causing property damage, personal
injury or death.

ance.

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 suppliers'
instructions.

• If you cannot reach your gas
supplier, call the fire department.

agency or the gas supplier.

safety information terms as shown below, be aware of the hazard potential.

DANGER: Identifies the most serious hazards which will result in severe personal injury or death.
WARNING: Signifies a hazard that could result in personal injury or death.
CAUTION:

Midco International Inc.

4 140 West Victoria Street Chicago, Illinois 60646
tel [phone] fax [phone]
web www.midco-intl.com e-mail [e-mail]

Quality Designed for Proven Performance

Part 1 Installation

Specifications

Primarily dry material such as paper, rags and wood. Burner normally

Consisting of approximately equal portions, by weight of No. 1 and No.

Organic materials such as small carcasses and waste from hospital

the heat required to maintain the discharge temperature of the flue products as specified

Make sure that the incinerator room has sufficient ventilation to provide the necessary

combustion air for the burner fuel, the waste material and any other appliance that would

WARNING: Under no condition should the access to outside air be so

restricted that the maximum possible use of combustion air is inhibited. Pay

particular attention to exhaust fans that could draw air from the area and create a

1

BURNER AIR DELIVERY

Approximate Air Delivery at Zero Draft….....180 SCFM

2

MINIMUM GAS PRESSURE LISTED FOR PURPOSE OF
INPUT ADJUSTMENT

(Take Pressure at Inlet Tap of Main Automatic Valve )

NATURAL………………………………………………..5.5" W.C.
PROPANE……………………………………………….8.0" W.C.

BURNER FIRING RATE (NATURAL OR PROPANE)

All Ratings Based on 1000 BTU/cu. ft. NATURAL, 2500 BTU/cu. ft. PROPANE at Sea Level

MINIMUM……………………………………………... 100 MBH

3

4

MAXIMUM (With Combustion Air From Burner Only)

20% Excess Air……………………………900 MBH
0% Excess Air (stoichiometric)……..….1080 MBH

MAXIMUM (With Combustion Air From Burner Blower

and Additional Air Available in Combustion Chamber.)
NATURAL Gas 5.5" W.C. or PROPANE Gas at 11.0" W.C.
Gas Pressure at Main Automatic Valve……….1,200 MBH

ELECTRICAL SUPPLY……………………120/1/60; 4.5 amps
BURNER ON-OFF CONTROL……………Toggle Switch.
FLAME SAFETY…………………...Electronic Flame Safety

with spark ignited ignitor (pilot) and 100% shut-off.

OPTIONAL WEATHERHOOD

5

ADJUSTABLE FIRING ANGLE…………...Mounting Flange

adjustable for horizontal or 10° down firing.

NOTE:Burner components are UL recognized, CGA listed, CSA certified

Part 1

Installation

I Primary Chamber Fuel Input

and/or AGA design

certified, mounted and wired. The complete burner is fire tested.

1. Standard burners are shipped as NATURAL gas models. A kit is available for field conversion to
PROPANE gas.

2. SCFM = Standard Cubic Feet/Minute.

3. NOTE: Firing rate with combustion air from burner blower only is based on using standard air at sea
level with zero draft over-fire. De-rate burner for altitudes over 2,000 feet by 4% for each 1000 feet of
additional elevation.

4. 100 MBH = 100,000 BTU/Hr.

5. Kit is available for field installation.

No. 1 Waste:

required only for light-off.

No. 2 Waste:

3 waste; 70 lbs. per 100 MBH.

No. 3 Waste: Wet material such as garbage; 25lbs. per 100 MBH.

No. 4 Waste:

operating rooms or pathological laboratories; 13 lbs. per 100 MBH.
NOTE: The burner input required for the secondary chamber must be determined from

by the EPA for the type of waste involved and the location of the incinerator.

______________________________________________________

II Indoor Ventilation

draw its air from the same enclosed area.

negative pressure in the room.

2

3

Part 1 Installation

Part 1

Installation

Continued

III Installation

Install the INCINOMITE burner(s) in location(s) specified by the incinerator
manufacturer. It should be positioned approximately level with the top of the highest
normal load and fire with or across the draft flow.

If the incinerator is designed only for No. 4 waste, the level can be lowered to bring
the flame to play directly on the smaller loads characteristic of this type of operation.
The opening through which the burner fires should be of a diameter only large enough
to accommodate the Blast Tube (4¼" diameter x 3" minimum long.) Do not allow the
Blast Tube to protrude into the incineration chamber. If necessary, build an extension
outside of the incinerator wall to increase wall depth.

To change the Mounting Flange to its alternate position, horizontal or 10° down
firing, remove the four (4) screws that attach it to the burner, rotate the flange 180° and
reinstall the screws.

Before mounting the burner, check that the Blast Tube and Blower Housing are clear
of foreign material and that the Main Gas Port and Nozzle Support is clean and
undamaged.

If the incinerator is located outdoors, the burner and all of its components, except
the Main Manual Shut-Off Valve, must be protected from weather. The MIDCO
Accessory Weatherhood will provide such protection.

CAUTION: If the incinerator is of the down draft design, make sure that a
direct draft vent opening of approximately 10 square inches has been put
through the top of the drop section(s) to provide for the venting of any gas
leakage. See Figure 1.

IV Chimney, Vent Connector*

and Draft Control

*Formerly referred to as

FLUE PIPE

Figure 1 Typical Installation

______________________________________________________

The size and type of material used for the vent connector and chimney must conform
to the recommendations of the incinerator manufacturer, as well as local and national
codes. This is especially true where high flue gas temperatures are encountered.

When natural draft is used and the chimney height is over 25 feet, a barometric
damper of the same size as the vent connector should be installed. If the chimney is
high enough to make it difficult for the barometric to maintain a maximum incineration

Part 1 Installation

Part 1

Installation

Continued

chamber over-fire draft, 0 to minus 0.5" W.C., a fixed damper should be installed in
the vent connector between the barometric and chimney to restrict the chimney
draft to a point within the controlling capacity of the barometric. After final setting,
the damper should be permanently fastened into position per ANSI Z223.1-latest
edition "National Fuel Gas Code", or latest edition available from American National
Standards Institute to prevent tampering.

______________________________________________________

V Piping

The supply piping to the burner should branch off from the main line as close to the
source as possible (NATURAL gas meter or PROPANE tank regulator). When
branching off from an existing gas line, do not tap off the bottom of a horizontal
section. Use new black pipe and malleable fittings free from cutting and threading
burrs or defects.

Use pipe joint compound resistant to liquid petroleum gases when using either
NATURAL or PROPANE gas. Piping must comply with the local and national codes.
If the burner piping must be rearranged because of space limitations, be sure to
carry out the general configuration shown in Figure 3.

A suitable Main Gas Pressure Regulator should be installed as shown in Figures
1 or 3. Choose a regulator(s) to adjust the available gas pressure to the pressure
shown in SPECIFICATIONS, page 2.

CAUTION: The regulated gas pressures must not exceed 14" W.C. or Main
Automatic Gas Valve and Ignitor Regulator will be damaged. If excessive gas
pressure is prevalent, the regulator must be a tight shut-off type to prevent
high pressures from developing during stand-by.

For full input, refer too SPECIFICATIONS, page 2, for minimum gas pressure

required. For reduced capacities, refer to Firing Rate Curves, Table 2.

CAUTION: If gas supply pressure is below its specified range during
adjustment, an over-fire condition could result when pressure returns to
normal, particularly if the regulator adjustment screw is bottomed out.
ALWAYS confirm that at least the minimum rated pressure is being supplied
during regulator adjustments, and NEVER BOTTOM OUT regulator screw.

When selecting the burner supply piping size per Table 1, the permissible
pressure drop must be based on the pressure available at the inlet to the supply
pipe branch line when all other gas equipment fed by the same source (NATURAL
gas meter or PROPANE tank regulator) is firing at full rate. Also take into account
any other INCINOMITE burners to be attached to the same branch line.

When pressure testing the supply piping, the burner valve train must be
protected. If the test pressure is 0.5 PSIG or less, closing the Main Manual Shut-Off
Valve will suffice.

CAUTION: If the test pressure is over 0.5 PSIG, the test must be made
without any burner components connected, including Main Manual Shut-Off
Valves.

WARNING: EXPLOSION HAZARD. DO NOT USE OXYGEN FOR PRESSURE
TESTING. AN EXPLOSION COULD OCCUR DURING INITIAL START-UP.

NPT
PIPE
SIZE

3/4"

1"
1 1/ 4"
1 1/2"

2

4

TYPE

OF

GAS

Natural

Propane

Natural

Propane

Natural

Propane

Natural

Propane

Natural

Propane

Table 1 Schedule 40 Pipe Capacities in MBH

APPROXIMATE CAPACITY-MBH

LENGTH OF PIPE / FEET

10 20 40 60 100

275
450

520
800

800

---

---

---

---

---

200
300

350
550

730
800

800

---

---

---

130
200

245
385

500
790

760
800

800

---

100
165

195
300

400
630

610
800

800

---

125
150

235
300

480
460

725
800

800

---

Capacities shown are for total
pressure drop of 0.3"W.C. For

higher permissible pressure

drops consult your fuel supplier.

Source: Gas Engineers

Handbook-1974

Industrial Press Inc. NY, NY