Do Žlábku 733, 514 01 Jilemnice
Subject:
MTP Technical documentation
Page No./No. of pages:
14/20
Do not install any elements that make it difficult to dismantle the panel covering the tube
plate cover.
The ESD3J safety thermostat is not designed to regulate the required temperature. It is
placed in the heated air behind the heat exchanger, in its upper part max. 20 cm behind the
heat exchanger tubes. The contact of the safety thermostat T1 must be connected to the
burner feed phase to ensure that it is switched off in any (even malfunctioning) condition of
the burner.
The contact of the operating thermostat T2 is connected to the control terminals
circuit (usually marked T1 and T2) of the burner and it switches it off when the temperature
is above the set value.
The contact of the fan thermostat T3 ensures switching on of the fan and its
slowdown
(cooling the combustion chamber) when the burner is switched off.
Recommended electrical connection, see drawing No.:
3-JH-2001C - for ESD3J electronic thermostat
The heater is equipped with a clamp for protective connection according to ČSN 32 2000
-
4.41.
For the outdoor design of the heater, the triple thermostat is provided with a cover.
Once connected, it is necessary to check the direction of speed of the fan engine!
In case of a triple thermostat, it is absolutely necessary to connect the clamp
with PE conductor to prevent the influence of any induced voltages on the
thermostat sensor.
Note: It is not possible to switch off the whole device (both burner and fans)
without ensuring fan slowdown to cool the heat exchanger. The heat
accumulated in the heat exchanger could damage the surrounding equipment
due to the flow! It must not be possible to switch off the fans and leave the
burner on!
OPERATING INSTRUCTIONS
For the burner installed on the heat exchanger unit, the “Instructions” supplied
together with it by the manufacturer, apply to it.
Each heater is fitted at the output with a triple thermostat that provides safe
operating mode. This thermostat is not designed to regulate the required temperature.