Midco EC200 & EC300 - Manual (Page 2)

2
Midco International Inc.
8471 38
Part 1 Installation
NATURAL or PROPANE Gas
Air Delivery
EC 200 EC 300
(Approximate air delivery at zero draft) 40.0 SCFM* 60.0 SCFM*
Maximum Firing Rate** 200 MBH*** 300 MBH***
Minimum Firing Rate** 70 MBH*** 90 MBH***
Tube Diameter 4 inches 4 inches
Tube Length 7.50 inches 7.50 inches
Combustion Chamber Size Recommended Minimum W & H
100 MBH *** 8″ W x 8″ H
200 MBH *** 10″ W x 10″ H
300 MBH *** 14″ W x 14″ H
Gas Pressure Required
NATURAL or PROPANE 6.0″ to 14.0″ W.C. 6.0″ to 14.0″ W.C.
Electrical Supply Standard 120/1/60, 2.0 Amps 120/1/60, 3.0 Amps
230 volts 50/60 hz **** 230 volts 50/60 hz ****
Flame Safety 24V Electronic Flame Safety, with 100% shut-off,
30-second pre-purge.
Main Automatic Valve 3 Function Redundant 3 Function Redundant
Notes:
* SCFM=Standard Cubic Feet/Minute
** Ratings based on 1,000 BTU/cu. ft. NATURAL, 2500 BTU/cu. ft. PROPANE at Sea Level.
*** 1 MBH=1,000 BTU/Hr.
**** Available - Contact Factory
Derate burner for altitudes over 2,000 feet by 4% for each 1,000 feet above sea level.
I - Ventilation
General Information
Specifi cations
CAUTION: The ECONOMITE EC Series is not intended for outdoor installation and
must be protected from excessive moisture. Provide adequate clearance for service and
proper operation.
Before installation, read these instructions carefully.
The EC 200 / 300 burner is a gas power burner designed for fi ring natural or propane gas in most
applications. The burner is a self-contained unit consisting of a blower assembly, burner head,
ignition control and a combination gas valve. The burner installation involves mounting the burner to
the gas utilization equipment, piping the gas train and connecting the power supply. Every burner is
operationally fi re tested at the factory prior to shipping.
___________________________
If the former automatic oil burner provided trouble-free operation, then the gas utilization equipment
area should have suffi cient air for combustion and the dilution of fl ue gases.
Nevertheless, the area must be checked:
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Open basement or utility areas of normal construction, without storm windows or tight doors,
will generally allow suffi cient air infi ltration. However, if the gas utilization equipment is located in a
tight or separate room, additional ventilation may be required. Install two permanently open grills,
each sized on the basis of one square inch free area per 1,000 BTU (but not less than 100 square
inches) of the total input rating of all gas utilization equipment located in the confi ned space. One
grille should be located within 12″ inches of the ceiling, the other within 12″ of the fl oor.
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If the gas utilization equipment is located in an area of unusually tight construction, or if an
exhaust fan, kitchen ventilation system, clothes dryer and/or fi replace is installed in the building,
provisions must be made for an outside air supply near the gas utilization equipment area. Install
permanently open grills sized at not less than one square inch free area per 4,000 BTU of burner
input. When ventilating through horizontal ducts, grills should be sized not less than one square inch