The Thermann C7 is our premium residential continuous flow unit. Manufactured in Japan using the latest technology and highest quality materials, the Thermann C7 is one of the most economical continuous flow hot water systems in the Australian market.
Boasting an impressive gas economy and reduced environmental footprint, an upgrade to a Thermann C7 allows homeowners to enjoy significant running cost savings over the warranty period of the unit and beyond.
Installing a Thermann C7 is a true win-win scenario. Plumbers can offer their customers a premium upgrade, and the homeowner can offset the upfront price with long-term savings.
The Thermann C7 uses condensing technology. The flue gases heat a secondary heat exchanger that preheats the water before entering the primary heat exchanger. As a result, the system uses less gas to heat the same amount of water.
Compared to a 6 star unit of the same size (26L), the Thermann C7 will save the homeowner approx. $70.00/year* on Natural Gas and $140.00/year* on LPG.
That means, over the 12-year warranty period**, running cost savings amount to approx. $850.00* for Natural gas models and $1,679.00* for LPG models.
The Thermann C7 presents both homeowners and plumbers with significant benefits.
Homeowners:
Upgrading to a Thermann C7 gives homeowners the convenience of
unlimited hot water at a lower running cost. With its reduced
gas consumption, this unit appeals to those who are conscious of
their overall carbon footprint.
Plumbers:
The Thermann C7 gives plumbers a premium option when it comes to
quoting a hot water system. It provides a point of difference
from standard continuous flow installations, with tangible
benefits for the customer.
Explaining these benefits proves that the plumber has the customer's best interests at heart, which in turn, increases the likelihood of repeat business.
Additionally, some state governments are offering monetary incentives to install energy efficient solutions for consumers (such as the Victorian Energy Upgrades program). By installing a Thermann C7, plumbers will be contributing to an environmentally sustainable future.
The Thermann C7 heats water using condensing technology, which can generate condensate at a rate of up to 5 litres per hour as a by-product of gas consumption. This condensate can be mildly acidic and must be drained appropriately.
To safely expel the condensate liquid, the Thermann C7 has an inbuilt neutraliser which the condensate passes through. This makes it safe to discharge into a storm water or sewer drainage point.
The use of PVC pressure pipe for the drain line is recommended. Although it passes through the neutraliser, the condensate liquid may be corrosive to metals over time.
The drain connection at the bottom of the unit is a ½” or 15mm male thread, therefore you will need a ½” female pressure pipe connector, and enough pressure pipe run to reach the closest storm water or sewer drain point.
As per the Thermann installation manual, the drain must have a 20 fall to the discharge point and should be fixed with a saddle or pipe clip. There must also be an air gap between the end of the drain and the discharge point to eliminate the risk of backflow.
It's important that companies continue to look for economically and environmentally sustainable technologies that reduce carbon emissions and running costs. For both environmental and financial reasons, more customers are seeking ways in which they can reduce their household energy usage.
By utilising a secondary heat exchanger, the Thermann C7 is able to reclaim up to 75% of the escaping heat. This means that the unit uses up to 2,300Mj* less gas per year than the equivalent Thermann 6-star model. This is comparable to around one 45kg LPG bottle per year.
In addition, because less gas is used to heat the same amount of water, the Thermann C7 produces less CO2 emissions annually which helps contribute to the lowering of a household's overall carbon footprint.
Backed by a 12-year heat exchanger warranty, and three years parts and labour warranty, the Thermann C7 is an excellent upgrade to any plumber's continuous flow offering.
*this is a comparative figure that indicates the amount of gas used to operate the water heater for one year, delivering 200 litres per day of hot water. It is based on testing conducted on the model to the relevant Australian Standard. This is based on the comparison between the Thermann 6 Star 26L LPG 50 degree model (9505080) and the Thermann C7 26L LPG 50 model (9506817). Cost is based on $130.00 per 45kg bottle with a usage rate of 5.9 c/MJ.
**Warranty period is for the heat exchanger only.