4
and regulations. When replacing an existing boiler, it is important to
check the condition of the entire hot water distribution system to ensure
safe operation.
You must also observe:
− The local building regulations stipulating the installation rules.
− The local building regulations concerning the air intake and outlet
systems and the chimney connection.
− The regulations for the power supply connection.
− The technical rules laid down by the gas utility company concerning the
connection of the gas connection to the local gas main.
− The instructions and standards concerning the safety equipment for
the water/space heating system.
− The Installation instructions for building heating systems.
− The boiler must be located in an area where leakage of the tank
or connections will not result in damage to the area adjacent to the
boiler or to lower floors of the structure. When such locations cannot
be avoided, it is recommended that a suitable drain pan, adequately
drained, be installed under the boiler. The pan must not restrict
combustion air flow.
− The boiler must be installed such t
hat the gas ignition system
components are protected from water (dripping, spraying, rain etc.)
during boiler operation and service (circulator replacement, condensate
trap, control replacement, etc.).
− The boiler must not be installed on carpeting.
− The boiler must only be installed on a wall.
− Do not restrict or seal any air intake or outlet openings.
− If you find any defects, you must inform the owner of the system of the
defect and the associated hazard in writing.
9
DANGER:
Flammable gas explodes. Beware if you smell gas: there
may be an explosion hazard.
9
WARNING
: If the information in these instructions is not followed
exactly, a fire or explosion may result causing property damage,
personal injury or death.
9
WARNING
: Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other boiler. Doing so may
result in an explosion or fire.
Observe these instructions as general warnings:
− Chemicals used to clean the system and/or inhibit corrosion must be
pH neutral, i.e. they should ensure that the level of the pH in the system
water remains neutral. Premature failure of certain components can
occur if the pH level in the system water is out of normal range.
− The manufacturer recommends that an inhibitor - suitable for use
with stainless steel heat exchangers - is used to protect the boiler
and system from the effects of corrosion and/or electrolytic action.
The inhibitor must be administered in strict accordance with the
manufacturers instructions.
− When the boiler has been filled for the first time or the system has been
drained and refilled, it will be necessary to purge any air that may have
become trapped within the appliance heat exchanger.
NOTICE:
Propylene glycol in the system must not exceed 40%.
Boiler water
- If you have an old system with cast iron radiators, thoroughly flush the
system (without the boiler connected) to remove sediment. The high-
efficiency heat exchanger can be damaged by build-up or corrosion
due to sediment.
- Do not use petroleum-based cleaning or sealing compounds in the
boiler system. Gaskets and seals in the system may be damaged. This
can result in substantial property damage.
- Do not use “homemade cures” or “boiler patent medicines.” Substantial
property damage, damage to boiler, and/ or serious personal injury
may result.
- Continual fresh make-up water will reduce boiler life. Mineral build up
in heat exchanger reduces heat transfer, overheats the stainless steel
heat exchanger, and causes failure. Addition of oxygen carried in by
make-up water can cause internal corrosion in system components.
Leaks in the boiler or piping must be repaired at once to prevent make-
up water.
- We recommend the use of water treatment additives to prolong the life
of the boiler and prevent against corrosion and contaminant build ups
in the heating system.
- Ensure piping in the heating system has an oxygen barrier.
Observe these instructions for space heating water:
− Thoroughly flush the system prior to filling. Only use untreated potable
water to fill and top off the system.
−
Do not use water softeners in the system.
− The maximum permissible flow rate of the 120k BTU/h is 3.7 gallons per
minute (GPM) and of the150k BTU/h is 3.96 gallons per minute (GPM).
− When using oxygen-permeable pipes, e.g. for floor heating systems, you
must separate the system using heat exchangers. Unsuitable heating
system water promotes the formation of sludge and corrosion. This may
damage the heat exchanger or affect its operation.
Tools, materials and additional equipment
For the installation and maintenance of the boiler you will need the
standard tools for space heating, gas and water connection.
In addition, a handtruck with a fastening belt is very useful.
Disposal:
− Dispose of the boiler packaging in an environmentally sound manner.
− Dispose of components of the heating system (e. g. boiler or control
device), that must be replaced, by taking them in to an authorized
recycling facility.
3
SAFETY
3 .1
General safety
To meet
domestic hot water use needs, the high limit safety control on
this boiler is adjustable up to 140°F (60°C). Water temperatures over
125°F (52°C) can cause instant severe burns or death from scalds.
When supplying general purpose hot water, the recommended
initial setting for the temperature control is 120°F (49°C).
Safety and energy conservation are factors to be considered when
setting the water temperature on the thermostat. The most energy-
efficient operation will result when the temperature setting is the
lowest that satisfies the needs of the application.
Children, disabled and elderly are at highest risk of being scalded.
− Feel water before bathing or showering.
− Temperature limiting valves are available.
NOTICE (for heating only model):
When this boiler is
supplying general purpose hot water for use by individuals, a
thermostatically controlled mixing valve for reducing point of
use water temperature is recommended to reduce the risk of
scald injury. Contact a licensed plumber or the local plumbing
authority for further information.
Maximum water temperatures occur just after the boiler’s burner
has shut off. To determine the water temperature being delivered,
turn on a hot water faucet and place a thermometer in the hot water
stream and read the thermometer.
9
Only for heating only model
WARNING:
This boiler cannot supply hot water for use
by individuals directly. A heat exchanger must be used in
conjunction with this boiler to meet DHW needs.
3 .2
Scalding time/temperature relationships
The following chart details the relationship of water temperature
and time with regard to scald injury and may be used as a guide
in determining the safest water temperature for your applications.
Water Temperature
Time to Produce Serious
Burn
120°F (49°C)
More than 5 minutes
125°F (52°C)
1-1/2 to 2 minutes
130°F (54°C)
About 30 seconds
135°F (57°C)
About 10 seconds
140°F (60°C)
Less than 5 seconds
145°F (63°C)
Less than 3 seconds
150°F (66°C)
About 1-1/2 seconds
155°F (68°C)
About 1 second
Table courtesy of The Shriners Burn Institute.
The temperature of the water in the boiler can be regulated by
using the boiler front control. To comply with safety regulations, the
control is set to a lower temperature when shipped from the factory.
CAUTION:
Hotter water increases the risk of scalding! Th
ere is a
hot water scald potential if the thermostat is set too high.
