Ultimate Products PF Series manual Fig, Oil Burner and Controls Start-Upand Adjustment, Pipe Size

ANTIFREEZE

1.Antifreeze added to boilers must be non-toxic, and must be of a type. specifically intended for use in closed hydronic heating systems. Under no circumstances should automotive antifreeze be used.

2.Use of antifreeze in any boiler may reduce capacity by 10% or more and increase fuel consumption. Tankless coil performance will fall as concentration of antifreeze is increased.

3.Because antifreeze forms slush rather than hard ice, it is safe to protect only to 10 degrees above coldest temperature anticipated provided slush formed can move towards expansion tank.

WATER VOLUMES OF PF SERIES BOILERS

MODEL NO.	VOLUME	MODEL NO.	VOLUME
	IN GALLONS		IN GALLONS
DPF3	7	DPF3T	10
DPF4	9	DPF4T	12
DPF5	11	DPF5T	14
DPF7	15	DPF6T	16
DPF9	19	DPF8T	20
		DPF7TT	21

PIPING VOLUMES

Divide total length of piping in feet by Factor A below to determine water volume in gallons.

PIPE SIZE	PIPE MATERIAL	FACTOR
½"	Copper	82.5
½"	Steel	63.5
¾"	Copper	40.0
¾"	Steel	36.0
1"	Copper	23.3
1"	Steel	22.2
1¼"	Copper	15.3
1¼"	Steel	12.8
1½"	Copper	10.8
1½"	Steel	9.5
2"	Copper	6.2
2"	Steel	5.8

ALTERNATE AIR ELIMINATION METHOD

As boiler temperature increases, air will move from top of boiler toward float vent even if lower. As boiler temperature decreases, water will move from expansion tank toward boiler.

FIG. 23

Oil Burner and Controls Start-Up and Adjustment

WEATHERPROOF BOILERS

This boiler was designed to produce the ultimate in useable heat from a gallon of fuel oil. To adjust the air-fuel mixture by eye is to waste fuel unnecessarily and to create undesirable soot.

Repeat - Do not adjust air by eye. Any time air adjustment or oil rate is changed, combustion must be checked with instruments. With chamber fully warmed up, find highest C02 level at which zero smoke can be maintained. Then add extra air until C02 falls off about 1%. Final setting should be at least 11% C02. If unable to obtain that reading, check for internal oil leaks, incorrect flame retention head or faulty or incorrect nozzle. Draft will vary as air is adjusted. It should be left at as near zero as possible at breeching.

The correct nozzle is the smallest which will do the job properly. Long continuous runs with minimum starts and stops conserve the most energy. The nozzle which provides the highest C02 with the least smoke for a particular application is always recommended.

Warning: A firing rate that is too low can result in a condensation problem within the chimney and boiler causing severe rust and corrosion. When domestic water is being heated, by-pass piping is recommended only when an Indirect Water Heater is used as shown on Figure 20. If no domestic water heating is involved, by-pass piping is always recommended as shown on Figure 21.

Beckett AFG or CF375 Oil Burner

A Beckett model AFG oil burner is used to fire boilers at 2.00 gph or less. At firing rates above 2.00 gph, a Beckett model CF375 is required. A model AFG burner shipped with your EV Series boiler is equipped with an F3 flame retention head, the size most commonly used. It is possible the head must be changed to match the nozzle firing rate required, and it is recommended the installer carry a complete assortment of Beckett flame retention heads. When head ratings overlap, a smaller head with air shutter fairly well open will generally provide better combustion than a larger head with air shutter near closed. See head size selection chart below. For firing rates under 1.00 gph

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