ZENIT
TYPE TUBE RADIANT HEATER
User’s Manual
9
Electrical wiring of burner when the appliance has SIT control box
12 11 10 9
8
7
6
5
4
3
2
1
N
TH
N FAN
APS
L/O
N
C
N
1
IN
T.
FU
SE
14 13
FL
AM
E
O
N
N
FU
SE
2A
F
L
6.
3X
0.
8
FU
N
C
TI
O
N
AL
2,
5A
SAFETY
ON VALVE
BODY
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 acomplished 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 (on ; 50%-60% ; off ) - with SIT 579 DBC electronics and 840SIGMA solenoid valve
→
Modulation - with SIT 579 DBC electronics and 845SIGMA solanoid valve
3-point regulation:
Principle: 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 preadjusted minimum 60%. The heating goes on with this power, and
if this power is enough for keeping of temperature then it stayes 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 nedeed sensation of temperature be continously 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.
Modulation control
There are three states according to operation of appliance: Out off operation, 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
appliance 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 sut off the appliance. Type of thermostat
can be: only use capable type of control which can handle the modulation control�(e�g�: FP-MOD type by Pakole Trade Kft�)
18. picture: Connection points of SIT 579 DBC automatic burner control box
Control of appliance
Summary of Contents for ZENIT Series
Page 34: ...ADIANT HEATER User s Manual...
