Reznor RDH Series User Manual

1307SDH_RDH--EN,page 20/32
025 030 035 043 055 073 100
Burner jet dia 4,80 5,30 5,90 6,50 7,10 8,50 10,00
Burner pressure mbar 7,50 7,70 7,40 7,10 8,30 7,10 6,10
inlet pres sure
25 mbar
Burner jet dia 3,25 3,65 3,80 4,10 4,70 5,60 6,70
Burner pressure mbar 14,00 12,70 16,30 15,90 16,60 13,90 14,80
inlet pres sure
50 mbar
SDH/RDH
Nat Gas
G20
Prop Gas
G31
9.4 Burner gas pressure adjustment
The gas pressure is set for the required heat input before
the appliance leaves the factory. Provided that the gas
supply to the air heater is in accordance with the supply
pressure described on the appliance data plate, the
operating pressure will not require adjustment.
To check the pressure use the following procedure:
o Ascertain from the heater’s data plate the correct
operating gas pressure;
o Turn the room thermostat control to its lowest
setting;
o Connect a manometer to the test point on the gas
manifold;
o Adjust the room thermostat to call for heat i.e. above
room ambient temperature;
o Observe the burner gas pressure on the manometer
and compare to the required pressure on the data
plate;
o If necessary, adjust the burner gas pressure.
Remove the cover screw. Turn the regulator screw
anti-clockwise to decrease pressure or clockwise to
increase pressure (see figure 13). Adjusting the
burner pressure may only be carried out by suitably
qualified persons.
o Set room thermostat to lowest setting to turn OFF
the burners. Replace the test point screw/cap and
with the main burner OFF, test for gas soundness
using a leak detector fluid.
Reset temperature control/room thermostat to
comfort operating level.
Figure 13: Honeywell gas valve
1) Gas inlet
2) Gas outlet
3) Inlet pressure tap
4) Outlet pressure tap
5) 6.3mm AMP terminals and screws for wiring
6) 6.3mm AMP terminals
7) Earth terminal/screw (line voltage models only)
8) Pressure regulator adjustment screw
Table 5 : Burner jets and pressures
Belarus, Bulgaria, China, Croatia, Czech Republic, Cyprus, Denmark, Estonia, Finland, Greece, Iceland,
Latvia, Lithuania, Montenegro, New Zealand, Norway, Poland, Portugal, Romania, Russian Federation,
Serbia, Slovenia, Slovakia, Spain, Sweden, Turkey, Ukraine
025 030 035 043 055 073 100
Burner jet dia 4,80 5,30 5,90 6,50 7,10 8,50 10,00
Burner pressure mbar 7,50 7,70 7,40 7,10 8,30 7,10 6,10
inlet pressure
20 mbar
Burner jet dia 3,25 3,65 3,80 4,10 4,70 5,60 6,70
Burner pressure mbar 14,00 12,70 16,30 15,90 16,60 13,90 14,80
inlet pressure
37 mbar
(*)
(*)
: inlet pressure for Poland, Bulgaria, Denmark, Finland, Norway, Sweden = 30mbar
inlet pressure for Ukraine & Russian Federation = 50mbar
Nat Gas
G20
Prop Gas
G31
SDH/RDH
Hungary

Reznor RDH Series Specifications

General

Brand	Reznor
Model	RDH Series
Category	Air Handlers
Language	English