*Pricing includes vat*

How to choose the right size geyser and why?

WATER – Dewhot have found that the biggest effect on their range of gas geysers and the way they operate is water, due to the following factors:

FLOW RATE – This is the biggest of the two and is why Dewhot have so many different sized units in the diaphragm activated range. The diaphragm activated range have an operating flow rate of their maximum down to half (which is true for all the sizes)

The flow rate in litres/minute is needed to size a geyser correctly so that the you the customer will get the hot water temperature and volume that you are expecting .

To determine the flow rate one must do a “Bucket Test”

BUCKET TEST – Use a bucket of known size and then run the COLD water tap of the shower, bath or basin (wherever the hot water will be needed), it must be the cold water as the hot water may be plumbed through an existing pressurised geyser and cold water is what will be connected to the future gas geyser. Run the cold water at the flow rate that you would normally use it at, catch the water in the bucket for a timed minute and then measure how may litres you have in the bucket.

This information gives you a flow rate of X litres/minute. You can now use this information to determine the size of the gas geyser needed for the outlet by selecting the next size geyser up from this figure and you will have the right geyser for your pipes, water pressure, personal preferences and shower head.

Below is a guideline only, remember the “Bucket Test” 

The 16Lt Constant Temperature Gas Geyser

R 6,770.00 incl vat

Features

Domestic constant temperature unit with natural exhaust

Automatic water flow/gas linked ignition, automatic pulse ignition from one “D” cell torch battery

Aluminium coated front panel

LCD control panel to set desired water temperature

Automatic flame height/water flow control

Constant temperature with varying water flow

Can mix with cold water

Water pressure 0.3 – 5 bar

For outdoor use (under cover) 

(additional cover recommended) – Type D

The 12Lt Low Pressure Gas Geyser 

R 4,424.00 incl vat & flue

Features

Operates from one-meter to a fifty-meter head of water pressure

Can be mounted indoors or out

Needs a flue

Flow range from 12lt to 3lts/min

Flow control tap on cold water supply

Allows addition of cold water

Water flow sensor, no diaphragm to freeze

Automatic start, runs on two torch batteries

Has adjustable pressure relief valve/drain stem

Anti-corrosive aluminium coated

For outdoor (under cover) or indoor use – Type B

The 5Lt Low Pressure EcoDew Gas Geyser 

R 2,100.00 incl vat

Features

White baked enamel front panel

Instant water heater with natural exhaust

Can be used indoors without a flue

Oxygen Depletion Sensor (ODS)

Flow from 5lt – 1lt/min

Allow for added cold water

Water flow sensor (no diaphragm)

Automatic ignition from two standard torch batteries

Single gas control knob

Cold water inlet control valve

Water pressure 0.1 bar – 5 bar (one-meter to fifty-meter head of water)

Adjustable pressure relief valve

For indoor & outdoor (undercover) use  (no flue) – Type A