Pakole ZENIT 70+, Руководство пользователя

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11
ZENIT 70
+
TYPE TUBE RADIANT HEATER
Instructions for Installation and Servicing
The ZENIT tube radiant heater can be controlled manually or automatically.
At manual control:
The electrical supply of appliance is interrupted manually, based on sense of temperature: Centrally, at each heating zones by a common
box Individually, at each appliances separately.
Automatic control:
Automatic control of temperature is accomplished by a temperature regulator, which switch on and off the appliance automatically trough
the electrical input of its according to the requested heat sensation. This temperature regulator – temperature reg temperature
sensor - can be programmable or simple one. The automatic control can be:
→ Traditional (2-point) regulation with Honeywell S4965R or SIT 579 DBC electronics,
→ 3-points regulation (100% – 60% – off ) with SIT 579 DBC electronics and 840SIGMA solenoid valve,
→ Modulated with SIT 579 DBC electronics and 845SIGMA solenoid valve.
3-point regulation:
During the operation of appliance 3 modes are possible, 100% or 60% of power or off mode (standby position).
The regulation made by thermostat, which senses the temperature changing and turns on the 100%, 60% power or turns off the appli -
ance. The appliance always starts the operation with 100% power and when the sensed temperature reaches the adjusted temperature
on the thermostat, then it automatically reduces the power to the pre-adjusted minimum 60%. The heating goes on with this power, and
if this power is enough for keeping of temperature then it stayed in this mode. If this input is still big for the heating, then the thermostat
turns off the appliance. If the temperature is decreasing (e.g. opened door) then the thermostat resets the power of appliance to the
100% This kind of re gulation makes it possible that the needed sensation of temperature be continuously served during an economical
operation.
That the reduced input can be 50% or 60%,it depend on the length of pipes and the temperature of exiting combustion products in
every case.
Type of temperature controller: so called 3-point control thermostat.
Control of appliance
Additional items inside the unit:
→ VK4125C magnetic coil
Operating principle:
The appliance will start always on maximum capacity. At this time the heater will receive all two phase and the neutral from the temper-
ature controller. The phase which will pass that tension to the additional VK4125C magnetic coil, through this the coil will concede the
pre-adjusted maximal pressure value. When the thermostat switched of the phase, in this position the additional VK4125C magnetic
coil will not give out any signal so the coil will set a minimum pressure on the magnetic valve.
The power supply system must be carried out from 4x0.75 MT cables.
Modulation control
There are three states according to operation of appliance: turn off, operation between performance of 100% and 50% or maximum
(100%) performance. Is the control of appliance by the thermostat which can sense the room temperature. The thermostat can control
the black tube radiant heater according to needed set up temperature. (The detailed manual of thermostat can be found supplied with
thermostat) When the thermostat send a sign than the heater starts with maximum performance (this time is minimum 30 sec) The ap-
pliance keeps this performance till the difference is between temperature of room and the setted temperature is 3°C degrees, than the
control begin degrease the performance of appliance without any stage continuously to 50% of performance where the control keeps it
during this time till the temperature reaches the setted temperature. After these the thermostat switches off the appliance. Type of ther -
mostat can be: only use capable type of control which can handle the modulation control.(e.g.: FP-MOD type by distributor)