Euro-C 4000 RJL-GBEN
13/26
When the combustion air safety control closes
verifying airflow, the gas control valve will open
and the burner will light. If the burner does not
light, the ignition controller will lockout and must
be manually reset. The air heater is fitted with a
signal lamp and manual reset button that indicates
lock-out.
NOTE: If the first reset is not successful wait 15
seconds before resetting the igniter.
Table 4 : Combustion air pressure control settings
Model
Normal equilibrium
warm (Pascal)
Set point 'off'
(Pascal)
4011
95
68
4015
90
68
4018
180
130
4024
178
130
4030
180
130
4036
176
130
4047
180
130
4060
174
130
4072
160
130
4100
67
56
Wait approximately 30 seconds after the burner
has lit, the time delay relay will activate the
thermal fan control and will also activate the fan if
wired (most air handlers are equipped with
constant running fans). Continue to operate the air
heater for several minutes to ensure correct
operation.
Turn room thermostat to its lowest setting. The
main burners should extinguish while the fan
continues to run to cool the air heater. The fan
delay relay will normally be de-energized and stop
the fan motor in approximately 45 seconds (if
wired).
5.7 Options
5.7.1 Two stage burner control
Description
This option provides a 2-stage burner control
system providing 100% & 50% heat input.
Appliances so equipped will only operate in a two
stage manner when connected to a two stage
external control (room thermostat) or duct stat.
Important
Safe operation of the burner is only assured when
the low rate setting is 50% or greater than the
high rate setting.
The low rate gas setting pressure should therefore
never be less than 25% of the normal high rate
setting pressure. See table included in this
document.
Nomenclature
This option may only be used in conjunction with
appliances fitted with Honeywell multi-functional
gas controls types VR 4601P.. or type V 4600P..
The valve operator V 4336A.. 3/20 for natural gas
or V 4336A..4/37 for propane gas may be used to
replace the single stage gas regulator already fitted
if conversion is being under taken.
Regulation is possible for the pressure range 3-20
mbar for natural gas and 4-37mbar for propane
gas. A relay in the burner controls circuit is
necessary to ensure that burner start-up takes
place on high fire rate so that good main burner
cross lighting takes place.
Note:
The maximum gas pressure for all gas type is 60
mbar.
Care should be taken when handling the operator
for the purpose of replacement or exchange.
If upgrading of an existing single stage valve is
being carried out then the gas valve must be
marked accordingly to ensure that replacement
parts for the future are readily identified.
Figure 8 shows in outline view the valve operator
and indicates it's principle components.
Field adjustment & check-out
Important
1.
Fitting and adjustment may only be carried
out by qualified persons.
2.
Allow time for pre-set pressure to stabilise
before making adjustments i.e. 1 minute.
3.
Operate high-low regulator a few times after
adjustment to ensure correct setting.
4.
Remove cover cap as indicated in figure 8.
Setting (refer to figure 8)
-
lever off cover cap as indicated.
-
before commencing an adjustment connect a
manometer to the burner pressure test point.
-
maximum high rate setting
must
be adjusted
first after which the minimum low rate setting
can be adjusted. Any adjustment of the
maximum setting influences the minimum rate
setting.
-
do not adjust maximum or minimum settings
above or below the pressure stated on the
data plate or in table 5.
