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5

 

Burner staging is arranged to allow a minimum firing rate of no less than 50% in order to 
minimize possibility of condensation in the venting. Staging of burners for models 1200 through 
2000 is as follows: 
 

Two 
Stage 

Left Burner 

Right Burner 

Stage 1 

Off 

Full-Fire 

Stage 2 

Full Fire 

Full-Fire 

 

Three 
Stage * 

Left Burner 

Right Burner 

Stage 1 

Off 

Lo-Fire 

Stage 2 

Off 

Hi-Fire 

Stage 3 

Full-Fire 

Hi-Fire 

 

 

 

*

 

Recommended for Models 1400 and 1600

 

 

Four 
Stage 

Left Burner 

Right Burner 

Stage 1 

Off 

Lo-Fire 

Stage 2 

Off 

Hi Fire 

Stage 3 

Lo-Fire 

Hi-Fire 

Stage 4 

Hi-Fire 

Hi-Fire 

6.     GAS SUPPLY AND PIPING 

 
This boiler is intended to operate at inlet gas pressures not exceeding ½ PSI (14“ W.C.). If 
higher pressures are present, consult the gas company for correction. 
 
When pressure testing the gas supply piping at pressures above ½ PSI, the boiler and its 
individual gas shut-off valve must be disconnected from the supply piping. 
 
Provide a trap (drip leg) as close to the heater as possible. 
 
Install a good joint union and manual shut-off valve in the gas line near the heater to allow easy 
removal of the gas control assembly. 
 
Provide gas pressures at inlet to boiler manifold as follows: 
 

 

PROPANE

 

NATURAL GAS

 

Minimum  (inches W.C.)  

11 

Maximum (inches W.C.)  

11 

 
The gas supply line must be of adequate size to prevent undue pressure drop and must never 
be smaller than the size of the connection on the heater. Sizing based on Table 2 is 
recommended. 
 

Содержание MICOFLAME 2 Series

Страница 1: ...r appliance WHAT TO DO IF YOU SMELL GAS o Do not try to light any appliance o Do not touch any electrical switch do not use any phone in your building o Immediately call your gas supplier from a neigh...

Страница 2: ...8 RELIEF VALVE 10 9 FREEZE PROTECTION 10 10 WARNING REGARDING CHILLED WATER SYSTEMS 11 11 PIPING OF SYSTEM TO BOILER FIG 4 11 12 PLACING BOILER IN OPERATION 13 13 IGNITION SYSTEM SAFETY SHUT OFF DEVI...

Страница 3: ...ty having jurisdiction the installation must conform to the Standard for Controls and Safety Devices for Automatically Fired Boilers ANSI ASME CSD 1 The qualified installer shall instruct the end user...

Страница 4: ...installed above the level of the building s radiation system a low water cutoff device must be installed in the boiler outlet at the time of installation Some local codes require the installation of a...

Страница 5: ...tion leading to reversal of the natural draft action of the venting system Under these circumstances an engineered air supply is necessary If the heater is to be installed near a corrosive or potentia...

Страница 6: ...fans must be running in order for the appliance to proceed to trial for ignition MicoFlame series 2 is supplied with more than one burner may use burners that are not of identical size in order to acc...

Страница 7: ...to operate at inlet gas pressures not exceeding PSI 14 W C If higher pressures are present consult the gas company for correction When pressure testing the gas supply piping at pressures above PSI th...

Страница 8: ...upported approximately every 4 feet to prevent sagging and maintain a minimum upward slope of per foot from the boiler to the vent terminal When an existing boiler is removed from a common venting sys...

Страница 9: ...structions from the chimney and flue which might impede draft action Replace any damaged or deteriorated parts of the venting system A qualified service technician should follow this procedure when in...

Страница 10: ...efficient and is considered to be a category II or IV appliance Three venting options are available for this boiler in both condensing and non condensing configurations See Figure 2 for details Pleas...

Страница 11: ...ACNA AFTS 100 73 Standard When venting through unheated spaces with single wall vent insulation should be wrapped around the vent pipe to prevent flue gas condensation inside the vent Periodically che...

Страница 12: ...inst damage that could be caused by malfunctioning controls or excessive water pressure If a relief valve is not used warranty is void The relief valve is to be located as near as practical to the out...

Страница 13: ...tic means to prevent gravity circulation of chilled water through the boiler Chilled water in the boiler will create condensate on the boiler tubes which will collect in the combustion chamber causing...

Страница 14: ...radiation level it must be provided with a low water cutoff device at the time of boiler installation Available from factory A pressure relief valve is supplied with each MicoFlame series 2 boiler Th...

Страница 15: ...ance filled with air Start up boiler following instructions provided Operate entire system including pumps and radiation for at least 1 hour Check water level in expansion tank If level exceeds of tan...

Страница 16: ...he inlet temperature is greater than 110 F but not greater than 140 F no further adjustment is required e Check the inlet temperature after 5 minutes and make final adjustments 15 INSTANTANEOUS WATER...

Страница 17: ...t burner every six months for proper flame characteristics 16 1 MAIN BURNER The main burner figure 7 should display the following characteristics Acceptable CO and CO2 levels for complete combustion L...

Страница 18: ...1 6 1 9 1 6 1 9 1 2 1 6 1 2 1 6 2000 1 9 2 2 1 9 2 2 1 5 1 9 1 5 1 9 Depending on field conditions air box pressures will have to be adjusted accordingly Always set the appliance for a CO2 level in th...

Страница 19: ...e electrode does not appear overheated or fouled with carbon It may be necessary to clean the ignition electrode using steel wool Once the pilot appears to be properly set reinstall it into the applia...

Страница 20: ...ction 15 of this manual After the first season of operation inspect the heat exchanger and venting Follow the detailed instructions in section 6 of this manual CAUTION Label all wires prior to disconn...

Страница 21: ...If pilot fails to light and you suspect air in the line close the main manual valve and repeat lighting steps 1 thru 5 7 Once the pilot lights it should envelope the ignition rod and ground electrode...

Страница 22: ...und electrodes are positioned properly Clean with steel wool if necessary Verify that back of burner box is fully engaged into the retaining slot in the combustion chamber base 5 Pilot lights but main...

Страница 23: ...ICAL DIAGRAMS Each MicoFlame series 2 boiler will be provided with its own wiring diagram to guarantee that any options ordered with the unit are properly detailed The following diagram 99 5072 and 99...

Страница 24: ...22...

Страница 25: ...23...

Страница 26: ...24 22 EXPLODED VIEW...

Страница 27: ...25 23 MICO FLAME REPLACEMENT PARTS LIST...

Страница 28: ...standard warranty 2 Years six through ten replacement purchase price pro rated at the following schedule Year six 60 Year seven 65 Year eight 70 Year nine 75 Year ten 80 of the current list price of t...

Страница 29: ...t water heaters and heating boilers as well as a into every single unit For more information supplier of specialty HVAC products Our service line is open 24 hours 7 days a week on our innovative produ...

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