PRE-HEAT

1

This function operates automatically in conjunction with either of the Timers. When a Timer is selected, the heater may operate anywhere within an hour prior to the programmed starting time of the Timer.

The Pre-heat function will heat a room to the pre-set temperature by the programmed On Time.

This function is called Pre-heat due to the way it operates. The room temperature is sensed one hour before reaching the programmed time of either Timer.

The temperature differential at the time of sensing the room temperature, combined with the data from the previous operation governs exactly how long before the programmed On time the micro-computer will operate the heater and ignite the burner.

The following chart may help to improve understanding of the Pre-heat function.

TIME ELAPSED FROM IGNITION TO PRESET TEMPERATURE

 

Recorded by Micro Computer

 

Colder than usual

Warmer than usual

6:00

6:3

0

7:0

0

Programmed time

Later than average ignition

Average starting time

Earlier than usual ignition

Room temperature sensed

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Rinnai RHFE-308 FTR user manual Pre-Heat, Time Elapsed from Ignition to Preset Temperature
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RHFE-308 FTR specifications

The Rinnai RHFE-308 FTR is an advanced heating appliance designed to deliver efficient and comfortable warmth, especially in residential settings. It has become a popular choice for homeowners seeking reliable heating solutions that also emphasize energy efficiency and sustainability.

One of the standout features of the Rinnai RHFE-308 FTR is its innovative technology known as "Flue Gas Heat Recovery." This technology allows the heater to utilize the heat generated by combustion to enhance the overall efficiency of the unit. By capturing and repurposing flue gases, the RHFE-308 FTR can provide superior heating performance while minimizing energy waste, making it an environmentally friendly option.

The unit is equipped with a powerful burner system that generates impressive heat output while maintaining low emissions. This not only ensures effective heating but also complies with stringent environmental regulations, contributing to a cleaner atmosphere. Additionally, the Rinnai RHFE-308 FTR is designed to operate quietly, allowing homeowners to enjoy a warm and peaceful environment.

Ease of use is another appealing characteristic of the RHFE-308 FTR. It features a user-friendly control panel, which allows for precise temperature adjustments. Homeowners can set their desired comfort level with just a few simple clicks. This model also includes programmable timer options, enabling users to schedule heating times that align with their daily routines, further enhancing convenience and energy savings.

The compact and sleek design of the RHFE-308 FTR ensures that it can easily blend into various interior styles without looking out of place. It’s also lightweight, making installation straightforward for both professional technicians and savvy DIY enthusiasts. The unit’s construction emphasizes durability, featuring high-quality materials that ensure longevity and reliable performance over time.

Safety is a paramount consideration in the design of the Rinnai RHFE-308 FTR. It comes with multiple safety features, such as overheat protection and a child safety lock, providing peace of mind for families.

Overall, the Rinnai RHFE-308 FTR stands out as a versatile and efficient heating solution. With its advanced technology, user-friendly features, and emphasis on safety, it offers a comfortable and reliable heating experience for modern homes.
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