Midco RS40 - Manual (Page 2)

Part 1 Installation
Specifications
I Ventilation
II Preparation of the Gas
Utilization Equipment
NATURAL or PROPANE Gas
Air Delivery
(Approximate air delivery at zero draft)
Maximum Firing Rate**
Minimum Firing Rate**
Tube Diameter
Tube Length
Minimum Combustion Chamber Size
200 MBH
150 MBH
Gas Pressure Required
NATURAL or PROPANE
Electrical Supply
Flame Safety
Main Automatic Valve
42 SCFM*
200 MBH***
75 MBH***
4 inches
6.5 inches
7" W x 11" L or 10" dia.
6" W x 10" L or 9" dia.
5.0" to 14.0" W.C.
120/1/60, 3 Amp
24V Electronic Flame Safety, Direct Spark Ignition
with 100% shut-off, 30-second prepurge.
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.
One gallon of fuel oil=140,000 BTU.
Derate burner for altitudes over 2,000 feet by 4% for each 1,000 feet above sea level.
CAUTION: The ECONOMITE RS40 is not intended for outdoor installation and must be
protected from excessive moisture. Provide adequate clearance for service and proper opera-
tion.
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If the former automatic oil burner gave trouble-free operation, it is probable that the gas utiliza-
tion equipment area has sufficient infiltration of air for combustion and dilution of flue gases.
Nevertheless, the area must be checked:
?? Open basement or utility areas of normal construction, without storm windows or tight
doors, will generally allow sufficient air infiltration. However, if the gas utilization equipment is
located in a tight or separate room, ventilation to an open area as described above will 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 in the confined space. One grille should be located within 12 inches of
the ceiling, the other within 12 inches of the floor.
?? 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 fireplace is installed in the
building, provision 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 at not
less than one square inch free area per 2,000 BTU of all gas utilization equipment in the
confined space. In any case, the minimum dimension of rectangular air ducts shall not be less
than 3 inches.
?? In Canada, for detailed ventilation requirements, refer to standard CAN/CGA 1-B149.1 or
.2 and/or local codes.
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?? Clean the gas utilization equipment, heat exchanger interior, combustion chamber, and
flue connections. Remove all adhering tars, scale, dirt and soot. Inspect for actual leaks
and/or potential leaks.
?? Cement all joints, including those in the gas utilization equipment base and around door
frames, to prevent leakage into or out of the combustion chamber.
?? The access or firing door should open easily to relieve pressure. If positive latches exist,
they should be modified to permit easy opening; a spring loaded door holder is recommended.
?? On all boilers, make certain the pressure relief safety valve is in good operating condition.
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Part 1 Installation