Oil Meter HZ 3 Mounting Instructions
The oil meter may only be used to measure the consumption of EL heating oil.
Oil Meter HZ 5 R / HZ 6 R Mounting Instructions
The oil meter may only be used to measure the consumption of heating oil L and EL or diesel fuel.
Oil Meter HZ 5 / 6 & HZ 5/6 DR Mounting Instructions
The oil meter may only be used to measure the consumption of heating oil L and EL or diesel fuel.