10.After base is totally cleaned and dried, replace mineral absorption pad. Place steam dome on base by aligning its slots with tabs in base. (You may have to reposition steam dome to other set of tabs, because it will only fit one way.) Rotate steam dome clockwise until it locks. You may want to place scraper in slot in top of steam dome to store scraper when not in use. Place steam dif- fuser on base so that the slots in steam diffuser line up with tabs on the base. Rotate steam diffuser clockwise until it locks in place.

11.Plug in the unit and resume normal use.

CHANGING THE UV GERMICIDAL BULB

1.If the “REPLACE UV BULB” indicator illuminates during normal use, it is time to change the UV germicidal bulb, which is a special 3.5W bulb.

2.Turn the POWER switch to the “OFF” position, unplug it and allow it to cool.

3.Remove the water tanks from the

base of the humidifier. Remove steam diffuser and steam dome by rotating them counterclockwise and lift up.

4.Place the base of the humidifier over the sink and tilt the unit to remove any remaining water.

5.Carefully turn the base of the humidi- fier over and place it upside

down on a flat level surface. You will see a door at front of unit that is closed with two Phillips head screws.

6.Using a Phillips head screwdriver, carefully turn the screws counterclockwise until the screws separate from the door.

7.Open the door, by pulling forward. The UV germicidal light bulb will be visible. Pull the door out the minimum amount to have access to unscrew bulb from

socket.

8.Take a replacement 3.5W UV germicidal bulb that you purchased from Slant/Fin Corporation or another supplier and change the bulb. To prolong

the life of the bulb, limit your direct contact with the glass of the bulb by using a cloth or tissue to screw it into place.

9.When the new bulb is in place, close the door and replace the screws by using your Phillips head screwdriver and rotating them clockwise until they are just tight. DO NOT OVER TIGHTEN.

10.Turn the unit upright, place the water tanks on top of the base of the humidifi- er, plug the unit in, and turn the POWER switch to either the LO or HI posi- tion. The “REPLACE UV BULB” indicator should no longer be lit.

IMPORTANT NOTE: Even though you will not receive maximum germicidal effects, you can still use your GF-300 and GF-350 humidifier until the replacement bulb arrives.

8

STORAGE TIPS

If you do not plan to use your humidifier for an extended period of time, such as during the summer months, it is important that you follow these instructions to help prevent problems from developing in the unit.

1.Clean your humidifier as instructed in the section titled, “Cleaning and Maintenance”.

2.Make sure all water is emptied from the tanks and the hot and cold water reservoirs.

3.Dry your unit thoroughly.

4.Leave the tank caps off to expose the tanks to air.

5.Pack your humidifier in its original carton and store it in a cool, dry place.

SERVICE

DO NOT attempt to repair this humidifier yourself. For repairs covered under the warranty, contact Slant/Fin by telephone or mail for a Return Authorization Number. Have other repairs professionally performed.

GLOW

It is normal to see the humidifier glow when operating in a darkened room. This glow results from the internal illumination of the 3.5 watt UV bulb. However, no ultraviolet light, even at this harmless level, passes through the UV-proof cabinet into the room.

TROUBLESHOOTING

TROUBLE

POSSIBLE CAUSES

SOLUTION

 

 

Unit does not mist

 

Unit is not plugged in

Plug in unit

 

 

 

Power failure

 

Check circuit breaker

 

 

 

Water tanks empty

Remove and refill

 

 

 

Power switch not turned on

Turn on switch to LO or

HI

 

 

Unit not reset after refilling tanks

Reposition water tanks

 

 

 

Water tank not properly

Reposition water tanks

 

 

 

located on base unit

 

 

 

 

Humidity level set is achieved

Turn Relative Humidity

 

 

 

using distilled or treated water

Control to higher setting

 

 

 

which does not contain enough

Add “pinch” of table salt

 

 

 

ions

 

 

 

Water leaks from unit

Drain cap, drain cap gasket,

Tighten cap.

 

 

 

tank cap or tank cap

Replace or tank cap

 

 

 

gasket is missing or improperly

or reposition cap

 

 

 

positioned

 

gasket.

 

Moist air output low

Mineral buildup in hot water

Clean unit as per

 

 

 

reservoir

 

instructions.

 

Refill/Clean

 

Water level is below water

Refill water tanks

 

indicator light on

 

level probes

 

and mount tanks on base

 

 

Water level probes

Clean probes per

 

 

 

are covered with film

cleaning instructions

 

 

 

Mineral buildup in hot water

Clean unit per

 

 

 

reservoir

 

cleaning instructions

9

LIMITED WARRANTY

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Slant/Fin GF-300 warranty Changing the UV Germicidal Bulb, Storage Tips, Service, Glow, Troubleshooting, Limited Warranty

GF-300 specifications

The Slant/Fin GF-300 is a high-efficiency gas-fired boiler designed for residential and light commercial applications. Known for its robust construction and reliability, the GF-300 serves as a vital heating solution, catering to those who prioritize efficiency and longevity in their heating systems.

One of the standout features of the GF-300 is its innovative design that integrates advanced technology for optimal performance. The boiler employs a cast iron heat exchanger, which ensures excellent heat transfer and durability. This feature not only enhances performance but also contributes to the overall lifespan of the unit, making it a smart investment for homeowners.

The GF-300 is engineered to achieve high levels of efficiency, with AFUE (Annual Fuel Utilization Efficiency) ratings that exceed industry standards. This efficiency translates to reduced energy bills and a smaller carbon footprint, making it an environmentally friendly choice. The model also boasts a modulating gas valve, which adjusts the gas flow to match the heat demand, further optimizing fuel consumption and ensuring consistent heating.

Another crucial aspect of the GF-300 is its versatility in installation. It is designed to be compatible with a variety of heating systems, including hydronic heating, radiant floor systems, and baseboard heaters. This flexibility makes it suitable for a wide range of applications, accommodating diverse customer needs.

The Slant/Fin GF-300 incorporates several advanced safety features, including an automatic vent damper and a dual-safety shut-off system. These features work together to ensure the safe operation of the boiler, reducing the risks associated with gas-fired heating systems.

Additionally, the GF-300 is designed for ease of maintenance. Its front-access design allows technicians to quickly and easily access serviceable components, minimizing downtime and ensuring that the system operates at peak performance.

In summary, the Slant/Fin GF-300 is a high-efficiency gas boiler that combines reliability, efficiency, and safety in a versatile package. With its innovative technology, robust construction, and commitment to performance, it stands as a preferred choice for homeowners and contractors alike, delivering reliable warmth for years to come.