DORCHESTER DR-SE 18, Инструкции по установке, пусконаладке и обслуживанию

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HAMWORTHY HEATING LTD
Page
DORCHESTER DR-SE 500001062/D
19
4.0 INSTALLATION
The heater should be installed in the same manner
as described in the main installers guide.
5.0 COMMISSIONING
The heater should be commissioned in exactly the
same manner as described in the main installers
guide, but the following additional points should be
closely observed.
a)
Before attempting to light the heater, ensure
that it is adjusted for the gas to be fired and
check that the injector size agrees with that in
the literature and on the data plate. The size of
the injector can be found stamped on the
brass injector itself.
b) Ensure that adequate ventilation is provided,
particularly at low level. LPG is heavier than
air so any spillage or leakage will result in a
build-up of gas on the floor.
c) Ensure that the incoming gas pressure is
regulated to the correct figure, 37 mbar for
propane, 28 mbar for butane.
d) Ensure that the LPG reaches the heater in a
fully gaseous state since liquid gas is detri-
mental to the control valve and results in poor
combustion.
e) Check all joints on the gas pipework including
the burner assembly and pilot line for leaks.
f) It is not necessary to fit a manometer to the
burner test point to check gas pressure since
the correct gas inlet pressure should already
have been set (see c) above. At this inlet pres-
sure, the burner input will be correct.
6.0 SERVICING
Follow the same procedures indicated in the main
installers guide.
7.0
ADDITIONAL RECOMMENDED SPARES
Description
Part No.
Gas Control Valve
( can be modified for
use on LPG from Nat.
Gas
version) 533903039
Main Injectors 2.3 mm
(DR-SE
18 LPG) 532902034
Main Injector 2.45 mm
(DR-SE
20 LPG) 330513733
Pilot
Injector (LPG) 330512479
MODEL DR-SE 18 DR-SE 20
Gas Inlet Pressure Propane (G31) 37 mbar 37 mbar
Gas Inlet Pressure Butane (G30) 28 mbar 28 mbar
Injector Diameter 2.30 mm 2.45 mm
Injector Marking 230 245
Gas Flow Rate Propane (G31) 0.85 m³/h 0.98 m³/h
Gas Flow Rate Butane (G30) 0.65 m³/h 0.74 m³/h
Table 1 - Technical Data