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2024‐01‐12
GAS HEATER PRO20 – FOR HEATING OF WATER IN HOT TUBS
Use pressure reducer 30mbar, 1.5 ‐ 2 kg/h (not included)
1
D
Gas pressure ‐ winter usage
When using gas, especially when it is cold, one must take into account that when the gas becomes cold, the gas pressure
in the bottle also drops. As the amount of gas decreases, it also affects the gas pressure, which drops further. The flame
becomes smaller and this reduces the effect. At a certain point the gas reducer will not release enough gas to keep the
stove running. This applies especially if the heater is operated at maximum power. Before connecting the heater, check
that there is enough gas for heating (at least ½ bottle) or have a spare bottle available and always store the gas bottle to
Thank you for choosing a gas heater from SpaDealers. The heater is easy
to use. When connecting to a hot tub, there's a connection kit (A) with
pump incl. hoses accessories (included in complete hot tub packages). For
the heater to start it needs a water flow of at least 7l/min created by a
pump. Connect the upper connection to the heater and wait until water
starts seeping out in the lower black nut (1). That means the air has been
displaced and the pump can be started. Note * The pump must not be run
dry as this can cause damage to the rotor shaft. When the water starts
flowing the ignition mechanism is activated automatically. If gas is
connected and turned on the torch will ignite and start heating the water.
The three white knobs should all be adjusted to Max.
TIP!
When the gas is running out you can turn the knobs for Gas and
Power set to Min. to take most advantage of the remaining gas.
B
B
C
When draining and there is a risk of freezing, loosen nuts
D and pull the hoses out of the connection so that all
water can run out. IMPORTANT! The filter is only
designed to remove minor impurities to protect the
pump and stove. Clean the filter after each use of the
bath. Use separate filtration for good water hygiene.
A
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Summary of Contents for SpaDealers PRO20
- Page 1 2024‐01‐12 GAS HEATER PRO20 – FOR HEATING OF WATER IN HOT TUBS Thank you for choosing a gas heater from SpaDealers. The heater is easy to use. When connecting to a hot tub, there's a connection kit (A) with pump incl. hoses accessories (included in complete hot tub packages). For the heater to start it needs a water flow of at least 7l/min created by a pump. Connect the upper connection to the heater and wait until water starts seeping out in the lower black nut (1). That means the air has been displaced and the pump can be started. Note * The pump must not be run dry as this can cause damage to the rotor shaft. When the water starts flowing the ignition mechanism is activated automatically. If gas is connected and turned on the torch will ignite and start heating the water. The three white knobs should all be adjusted to Max. TIP! When the gas is running out you can turn the knobs for Gas and Power set to Min. to take most advantage of the remaining gas. Use pressure reducer 30mbar, 1.5 ‐ 2 kg/h (not included) When draining and there is a risk of freezing, loosen nuts ...
- Page 2 be used in a warm place before putting it into use. Then there is less risk of the gas pressure becoming too low, as opposed to if the gas cylinder had been stored outside in the cold. Use your gas heater properly and you will avoid unnecessary problems not covered by the warranty. Here follows the most common problems that can be effectively avoided with proper maintenance. The most common problem that can occur is when contaminated water is used and the filter before the pump clogs up. This stops the water flow. The stove will then switch itself off. No temperature is displayed and there is no ignition spark. The problem is corrected by cleaning the filter. If the pump sucks in air, the same thing happens and, in both cases, there is a big risk that the pump will be destroyed as it does not get sufficient "lubrication" from the water. If that happens the pump often starts to make a "howling" noise and the warranty does not apply in such a scenario. Regularly check that the seals etc. are installed correctly and do not cause leakage so that air gets sucked into the pump. If the WATER knob must be turned towards the MIN position for the heater to start, this is also due to too little water flow. Then the small amount of water that flows through the heat exchanger is heated to such a high temperature that the stove's overheating thermostat switches the stove off. No temperature is then shown in the display. The problem is fixed by cleaning the filter and setting the WATER to MAX mode and restarting. One problem that may occur and one that is serious in terms of safety, is a gas leakage. Use the supplied brass connector and seal. There are clear instructions on page 5 of the manual. Before the gas heater is taken into service, also test it for leaks. When gas leakage occurs, a fire results, but it can be prevented by following the simple advice given on page 7 of the manual. ...
- Page 3 In standard configuration the gas heater is not protected against rain and such if not placed under a roof. Water entering the heater leads to electrical failure and the material may start to rust. It's easy to make a protective shelf that covers the stove. You must then take into account the installation regulations with dimensions on page 4 of the main manual. To reduce the minimum safe distance, a refractory material can used. On our website; www.spadealersuk.com, drawings can also be downloaded. The protective shelf is also available to order as an accessory. If the stove is left outside in freezing temperatures, then the heat exchanger could freeze and be destroyed. If the stove is not protected so that water cannot freeze in the heater, it shall be disconnected and taken indoors where the risk of freezing exists. HE GAS PIPE MAY BECOME CRACKED AND LEAK GAS DUE TO LONG TIME . NSPECT IT REGULARLY Check the connections of the gas pipe regularly with soapy water (Fig. 6) to make sure there is no gas leakage. In case of gas leakage, never make fire or touch any electric‐switches for the ventilation fan, etc. Do not connect or disconnect any power plugs; otherwise, a flame or spark could ignite the gas, causing a fire or explosion. Close the master gas valve, open all the doors and windows to exhaust the gas outside the house. Stop using the water heater and contact a service department or the gas supplier. EVENT LEAKAGE 1. NEVER MAKE FIRE TOUCH ELECTRICAL SYSTEMS SWITCHES MAKE PHONE CALLS ROOM ...
- Page 4 USE THE RIGHT LOW‐PRESSURE REDUCER The types of gas cylinders and connection methods of low‐pressure reducers (30mbar, 1.5 ‐ 2kg/h) can vary. It is important that the correct low‐pressure regulator is used. Here are examples of the correct type and also incorrect types. NEVER USE an adjustable controller. Examples of correct gas reducers and incorrect ones 50 mbar Note that the amount of gas that the stove needs to give full power is 1.5 kg/h. With a flow of 1 kg/h, power is reduced. PROTECTIVE CASE FOR GAS HEATER (item DTHHG) As an accessory there is this handy protective case for the gas heater that protects it from wind and rain. The front part is detachable and is removed during use. *There is fireproof material behind the heater and on the sides. Above the heater an inclined fireproof part leads exhaust fumes away. We also have the blue print for DIY'ers. *When the stove is in use, the front door can be tilted as picture B shows and protect from wind and rain.
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