Trianco Contractor WM70 HE INTERNAL, Инструкция по эксплуатации, установке, пусконаладке и обслуживанию, Страница: 13 / 36

13
OIL SUPPLY (cont.)
Notes:
1. The pump suction should not exceed 0.4bar, as dissolved
gas may be released from the oil, affecting combustion.
2. The return pipe must end at the same level as the suction
outlet to prevent loss of prime.
3. The outlet from the tank should be approximately 75mm
(3”) above the bottom to prevent sediment and water
being drawn into the supply line.
Single-Pipe Oil Supply with De-aerator (fig 13)
Where a two-pipe suction lift is required, but the return pipe
requirement is too long, or impractical to run, an oil de-aerator
can be used. The burner should be piped as for a two-pipe
system, up until the de-aerator, when a single pipe can be
taken the remaining distance to the storage tank. The de-
aerator should be fitted at the closest point to the boiler,
externally to the dwelling.
A non-return valve is not required with this system. The pump
is supplied ready for fitting to an oil de-aeration device.
FIG 13
INSTALLATION WITH OIL DE-AERATOR