Use and Care Manual

4
110637-01 - 5/20
RRO Installation & Service Manual
The RRO Series boiler is a cast iron oil-fired water
boiler designed for closed forced circulation heating
systems. This boiler must be vented by natural draft
into a fireclay tile-lined masonry chimney or chimney
constructed from type L vent or a factory built
chimney that complies with the type HT requirements
of UL103. An adequate supply of air for combustion,
ventilation and dilution of flue gases must be available
in the boiler room.
1 Product Description, Specification and Dimensional Data
WARNING
This boiler contains very hot water under high pressure. Do not unscrew any pipe fittings nor attempt to
disconnect any components of this boiler without positively assuring the water is cool and has no pressure.
Always wear protective clothing and equipment when installing, starting up or servicing this boiler to prevent
scald injuries. Do not rely on the pressure and temperature gauges to determine the temperature and
pressure of the boiler. This boiler contains components which become very hot when the boiler is operating.
Do not touch any components unless they are cool.
• High water temperatures increase the risk of scalding injury. If this boiler is equipped with a tankless heater
for domestic water supply, a flow regulator and automatic mixing valve must be installed properly in tankless
heater piping. See Piping and Trim Sections of this manual for details.
• This boiler must be properly vented and connected to an approved vent system in good condition. DO NOT
operate boiler with the absence of an approved vent system.
• This boiler needs fresh air for safe operation and must be installed so there are provisions for adequate
combustion and ventilation air.
• A clean and unobstructed chimney flue is necessary to allow noxious fumes that could cause injury or loss of
life to vent safely and will contribute toward maintaining the boiler's efficiency.
• This boiler is supplied with controls which may cause the boiler to shut down and not re-start without service.
If damage due to frozen pipes is a possibility, the heating system should not be left unattended in cold
weather; or appropriate safeguards and alarms should be installed on the heating system to prevent damage
if the boiler is inoperative.
• This boiler is designed to burn No. 2 fuel oil only. DO NOT use gasoline, crankcase drainings, or any oil
containing gasoline. Never burn garbage or paper in this boiler. DO NOT convert to any solid fuel (i.e. wood,
coal). DO NOT convert to any gaseous fuel (i.e. natural gas, LP). All flammable debris, rags, paper, wood
scraps, etc., should be kept clear of the boiler at all times. Keep the boiler area clean and free of fire hazards.
• All boilers equipped with burner swing door have a potential hazard which if ignored can cause severe
property damage, personal injury or loss of life. Before opening swing door, turn off service switch to boiler to
prevent accidental firing of burner outside the combustion chamber. Be sure to tighten swing door fastener
completely when service is completed.
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