Suburban DynaLine Owner's Manual 04/2021 Rev.4
12
LIMITATIONS OF CARBON MONOXIDE (CO) DETECTORS
Manufacturer recommends that carbon monoxide (CO) detectors be located throughout a protected premise following the recommendations
of the current edition of the National Fire Protection Association Standard 720, National Fire Alarm Code (NFPA 720), manufacturer's
recommendations, and state and local codes. While carbon monoxide detectors are designed to provide warning against carbon monoxide,
they do not guarantee warning or protection against carbon monoxide. Any alarm system with carbon monoxide detectors is subject to
compromise or failure to warn for a variety of reasons. For example:
•
Molecules of carbon monoxide may not reach the sensing chambers of the carbon monoxide detector because:
•
Barriers such as closed or partially closed doors, walls, or chimneys may inhibit flow.
•
Molecules of carbon monoxide may be blown away from detectors by air outlets.
In general, carbon monoxide detectors on one level of a structure cannot be expected to sense carbon monoxide developing on another
level.
•
The amount of carbon monoxide present may be insufficient to alarm carbon monoxide detectors. Carbon Monoxide detectors are
designed to alarm at various levels of carbon monoxide density, or ppm (parts per million). If such ppm levels are not created by
developing carbon monoxide at the location of detectors, the detectors will not go into alarm.
•
Carbon monoxide detectors are subject to false alarms and nuisance alarms. For example, a carbon monoxide detector located too
close to a fuel burning appliance may go into nuisance alarm during normal operation of the appliance. If the location of a carbon
monoxide detector causes an abundance of false alarms or nuisance alarms, do not disconnect the carbon monoxide detector; call
a professional to analyze the situation and recommend a solution.
•
Warning devices (including horns, sirens, bells, and sounders on carbon monoxide detectors) may not alert people or wake up
sleepers who are located on the other side of closed or partially open doors. A warning device that activates on a different floor or
level of a dwelling or structure is less likely to awaken or alert people. Even persons who are awake may not notice the warning if
the alarm is muffled by noise from a stereo, radio, air conditioner or other appliance, or by passing traffic. Audible warning devices
may not alert the hearing-impaired (strobes or other devices should be provided to warn these people). Any warning device may fail
to alert people with a disability, deep sleepers, people who have recently used alcohol or drugs, or people on medication or sleeping
pills.
Please note that:
i)
Strobes can, under certain circumstances, cause seizures in people with conditions such as epilepsy.
ii)
Carbon monoxide detectors may be installed as part of a fire alarm system. Studies have shown that certain people, even when they
hear a fire alarm signal, do not respond or comprehend the meaning of the signal. It is the property owner's responsibility to conduct
fire drills and other training exercises to make people aware of fire alarm signals and instruct on the proper reaction to alarm signals.
iii)
In rare instances, the sounding of a warning device can cause temporary or permanent hearing loss.
• Telephone lines needed to transmit alarm signals from a premises to a central station may be out of service or temporarily out of
service. For added protection against telephone line failure, backup radio transmission systems are recommended.
• System components, though designed to last many years, can fail at any time. As a precautionary measure, it is recommended
that carbon monoxide detectors be checked, maintained, and replaced per manufacturer's recommendations.
• System components will not work without electrical power. If system batteries are not serviced or replaced regularly, they may
not provide battery backup when AC power fails.
• Environments with high air velocity or that are dusty or dirty require more frequent maintenance.
In general, fire alarm systems with carbon monoxide detectors will not work without power and will not function properly unless they are
maintained and tested regularly.
D. OPERATING TIPS - HEAT MODE OR COOLING MODE
1.
At times it may be desirable to reduce the operating sound level. This is possible by selecting “Low Cool” position. At this setting, the
cooling capacity is not reduced - only the blower speed and air movement is reduced.
2.
Circulation of room air with no heat or cooling may be obtained if desired. For fan only operation, depress “System” key pad until fan
only lamp is illuminated. Depress “Fan” key pad until desired speed lamp is illuminated.
UNIT CONTROLS AND THEIR FUNCTION
Limit Switch -
The purpose of the limit control is to turn off the gas to the main burner if, for any reason, the heating section of the unit
becomes hotter than that which is safe. Cycling on limit does not always indicate a defective limit switch. If the circulating air is blocked or
only partially so, the limit control will function and cause the main burner to go off. Cycling on limit is not always undesirable - if it happens
only occasionally. This is a good indication of safe operation and will most likely happen on a warm day. If cycling happens too often or for
an extended period, the circulating air system should be thoroughly cleaned. (See “Maintenance and Cleaning.”)
If for any reason, the limit switch is found to be defective, it must be replaced. There is no recommended method of repairing it. Because
of the importance of the limit switch, for safety reasons, never shunt the limit switch - even for only temporary operation.
Pressure Switch -
The purpose of the pressure switch is to sense the air pressure generated by the combustion air blower. When the
pressure is adequate to support combustion, the contacts in the switch close. This completes the circuit to the input of the module board
and the ignition sequence begins. If for some reason the pressure is not sufficient to support combustion, the switch will not operate.
Reasons for insufficient pressure: 1) slow combustion air motor 2) restriction in intake and 3) loose pressure switch tube or a blockage in
the pressure switch tubing.
Fresh Air Vent -
The purpose of the fresh air vent is to provide a means of introducing outside air into the living. The control rod is located
in the lower left front corner of the unit. To gain access to the control rod, the cabinet front must be pivoted forward. (See Figure 15)
NOTE
: Operating the unit with the vent open could reduce efficiency of the unit in both heat and cooling modes.