General Information
GDH Series Direct Fired Ducted Heater
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Gener al Information
A
BOUT
DGH
&
LU
U
NITS
The AIRA heater is a direct gas fired unit, compact and easy to install. There is no heat exchanger, no stack
and no stack loss. Direct fired heating is highly efficient because most of the heat goes into the air stream.
The heater is a complete or add-on package in itself, requiring only fuel and power connections after
positioning onto an adequate air supply. Basic GDH construction is an open ended duct framed at both ends
for ease of fixing into ductwork. Inside the duct is the direct fired gas burner mounted centrally across the
profile area. Gas valves and burner controls are mounted along the outside front wall of the unit.
GDH and LU heaters are available for use on natural gas or LPG (Propone), indoor or outdoor mounting.
The heaters are ideal for:-
1.
Providing tempered fresh air changes to conform to regulations.
2.
Providing automatically controlled warmth at maximum efficiency.
3.
Providing tempered make-up air to replace air exhausted from a building.
4.
Satisfying a wide range of processing, heating and curing requirements.
S
TANDARD
U
NIT
D
ETAILS
1.
Indoor or outdoor model (Specify on order).
2.
Modulating burner control.
3.
Remote reset provision
4.
Control switch. *
5.
Room thermostat.*
6.
Remote reset button and indicator light.*
* Supplied loose.
Models GDH 210, 265, 340, 1100 and 1500 are fitted with motorized dampers which can reduce high air
flow rates (common to evaporative coolers), not always necessary for heating applications.
Models GDH 525, 790, 1055, 1585, 2110 and 2500 are full air flow for heating when an evaporative
cooler is the air source. LU models are full air flow complete with fan
E
XTRA
C
OST
O
PTIONS
A
VAILABLE
1.
Remote control panel incorporating time switch, control switch, thermostat, lockout light and reset
button.
2.
Operation on gases other than natural.
3.
Inlet gas pressures exceeding 7 kPa.
4.
High gas pressure switch.
5.
Low gas pressure switch.
6.
Modulating burner control
7.
Vertical discharge
