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Garmat

®

 USA, Models 99270,  99273, 

& 99275 Direct Gas-Fired  Industrial 
Heater 

 

HEATER DESCRIPTION 

 
The Garmat

®

 USA, Inc. heater is a 

direct gas-fired fresh-air appliance. It is 
designed for indoor installation, outdoor 
installation with the proper sheltering 
from weather,  with fresh outdoor air 
delivered to the combustion zone. The 
heater is designed for use with natural 
gas or LPG ( check the heaters' rating 
plate). The direct gas-fired burner will 
modulate to maintain the selected air 
discharge temperature. This appliance is 
most suited for use with spray paint 
booths and associated equipment. It 
does, however, fill the need for non- 
recirculating building air make up. 
 

INSTALLATION CODES 

 
This equipment is designed and 
manufactured to provide years of safe 
and efficient operation. In order to retain 
these features, The installer (s) need to 
achieve certain installation and operation 
requirements. These requirements will 
be defined throughout this manual and 
should be specifically noted. 
 
The type of fuel used with this 
equipment and it’s proper firing rate are 
shown on the appliance rating plate. 
Electrical characteristics are shown on 
the rating plate as well. If the need for a 
change in fuel type occurs, the 
manufacturer must be consulted. 
 
 
 
 
 

 
WARNING: THIS UNIT IS NOT 
FOR INSTALLATION ON 
COMBUSTIBLE MATERIALS. 
THIS UNIT IS TO BE INSTALLED 
ON CONCRETE OR OTHER NON 
COMBUSTABLE SURFACES. 

 

WARNING: CLEARANCE 
AROUND THE UNIT TO 
COMBUSTIBLES SHOULD BE NO 
LESS THAN 4” (FOUR INCHES). 

 
This equipment shall be installed in 
accordance with the standards of the 
National Fire Protection Association and 
the National Fuel Gas Code ( NFPA 54 
).                                                                               
Local authorities having jurisdiction 
must be consulted first to verify local 
codes and installation procedures. In the 
absences of such codes and installation 
procedures, the unit shall be installed in 
accordance with the National Fuel Gas 
Code ANSI Z223.1 - Latest addition. 
 

HEATER  INSTALLATION: 

 

CONFIGURATION AIR BOX 
INSTALLATION 

 
The Garmat

®

 USA air make up units are 

equipped with a configuration air box 
(“C” box). This “C” box needs to be 
attached to the top of the make up unit 
utilizing 3/4” number 8 self drilling 
screws. The screws should be sent 
through the framing of both the unit and 
the “C” box to ensure it’s security. 

 

2

Содержание 99270

Страница 1: ......

Страница 2: ...other flammable vapors and liquids in open containers in the vicinity of this appliance is hazzardous WARNING Improper installation adjustment alteration service or maintenance can cause property dam...

Страница 3: ...and it s proper firing rate are shown on the appliance rating plate Electrical characteristics are shown on the rating plate as well If the need for a change in fuel type occurs the manufacturer must...

Страница 4: ...install fan belts and sheaves Adjust for proper belt tension Proper tension is achieved when the belt can be depressed 1 2 with moderate pressure at mid point between the motor and the fan sheves The...

Страница 5: ...nit is for use with a paint spray booth The use of two 120 volt 20 ampere circuits for lighting will need to be supplied to the unit when used in conjunction with a paint spray booth The motor require...

Страница 6: ...lt DC signal in the flame guard device During initiation there is a 10 second trial period At the end of this time if there is no flame in the pilot area the flame guard will lock out the burner syste...

Страница 7: ...ves that the valve is closed before allowing electrical power to continue through the gas train circuit Cabin Pressure Control System Model 99270 A manual adjust lever is provided at the exhaust press...

Страница 8: ...control transformer When the power switch and spray switch are actuated power is given to the motors If either exhaust fan motor starter or the supply motor starter trips out on overload the respectiv...

Страница 9: ...or a minimum of 3 minutes At the completion of the delay cycle 120 volt power is supplied to the change over damper solenoid In turn the change over damper is opened pneumatically releasing the damper...

Страница 10: ...troller returns to the first set position SP When the burner switch is in the summer position the PLC shuts off the gas train circuit At the end of the timed cool down cycle 1 to 10 minutes all functi...

Страница 11: ...nifold modulating valve If the Flame Guard Device does not receive proof of flame in the burner within 10 seconds the pilot solenoid and the ignition transformer will be de energized The Flame Guard D...

Страница 12: ...burner will not start if the temperature across the burner is below 20 deg F 4 Adjust high fire setting by viewing gas meter at the test port on the burner manifold manual gas valve Set the temperatur...

Страница 13: ...should be replaced annually 3 Blower wheel should be periodically inspected for build up of dust or dirt and cleaned if necessary 4 Annually check the burner and components The flame rod should be cha...

Страница 14: ...at 40 60 PSI TEMPERATURE DOES NOT Outside air temperature is Increase set point on RISE BURNER GREEN greater than set point Temperature control Reset LIGHT IS ON High limit is tripped Low gas high li...

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