GAS VENT
Water Piping
INLET AIR DUCT
FIGURE 13.
Alternatively a single permanent opening may be used when communicating directly with the outdoors, or with spaces that freely communicate with the outdoors. The opening shall have a minimum free area of 1 square inch per 3,000 BTU per hour (8.3 cm2/kW) of total input rating of all equipment in the enclosure. See Figure 13A.
OR
GAS VENT
OPENING
LOCATION
FIGURE 13A.
Louvers and Grilles: In calculating free area, consideration shall be given to the blocking effect of louvers, grilles or screens protecting openings. Screens used shall not be smalter than 1/4 inch (6.4 mm) mesh. If the free area through a design of louver or grille is known, it should be used in calculating the size opening required to provide the free area specified. If the design and free area is not known, it may be assumed that wood louvers wilt be
Special Conditions Created by Mechanical Exhausting or Fireplaces: operation of exhaust fans, ventilation systems, clothes dryers or fireplaces may create conditions requiring special attention to avoid unsatisfactory operation of installed gas utilization equipment.
| Water temperature | over 125°F | |||
| (52°C) can cause severe burns | ||||
| instantly resulting in severe injury | ||||
| or death. |
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,) | physically | or mentally | disabled | ||
_)(_ | a re at highest riskfor scald injury. | ||||
Children, | elderly, |
| and | the | |
_._ | Feel water before bathing or | ||||
_. | Temperature | limiting |
| valves | are |
| available. |
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| Read instruction manual for safe | ||||
. | tern perature | setting, |
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HOTTER WATER CAN SCALD:
Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, cleaning and other sanitizing needs can scald and permanently injure you upon contact. Some people are more likely to be permanently injured by hot water than others. These include the elderly, children, the infirm, or physically/mentally handicapped. If anyone using hot water in your home fits into one of these groups or if there is a local code or state law requiring a certain temperature water at the hot water tap, then you must take special precautions.
In addition to using the lowest possible temperature setting that satisfies your hot water needs, a means such as a *mixing valve should be used at the hot water taps used by these people or at the water heater. Mixing valves are available at plumbing supply or hardware stores. See Figure 14. Valves for reducing point of use temperature by mixing cold and hot water are also available. Follow manufacturer's instructions for installation of the valves. Before changing the factory setting on the thermostat, read the Temperature Regulation section in this manual.
| HOoTuWATER |
| COLD | WATER |
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| TLET | _ |
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TEMPERED | _]]__J |
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WATEROUTLET_.T_L.[_,_ | _ |
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+- | + | TO COLD | WATER | |
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| INLET ON | |
| *NIXING | HOT WATER | WATER | HEATER |
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| VALVE | OUTLET ON |
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| WATER HEATER |
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FIGURE 14.
Toxic Chemical Hazard
• Do not connect to
12
