Arcotherm PHOEN 380 User manual

1
NATURAL GAS / L.P.G. SPACE HEATER
INDEX
1. SPECIFICATIONS
2. MAINTENANCE SCHEDULE
3. MAINTENANCE PROCEDURES
PHOEN/N 380
L-S 104.00-BM
WARNING
The operations described in this booklet must be carried out by qualified and instructed personnel only.
Incorrect maintenance may result in improper operation and serious injury.

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1. SPECIFICATIONS
PHOEN/N 380
Supply pressure [in w.c.] min 7" w.c.
max 10" w.c.
Heat input [BTU/h] 380.548
Manifold pressure [in w.c.] 6,40
Normal
altitude 0 -
2,000 ft above
sea level
(U.S.A. and
Canada) Fuel consumption [CFH] 355,97
Heat input [BTU/h] 342.493
Manifold pressure [in w.c.] 6,07
Natural gas
Altitude 2,000
- 4,500 ft
above sea
level (Canada
only) Fuel consumption [CFH] 320,37
Supply pressure [in w.c.]
min 8" w.c.
max 13" w.c.
Heat input [BTU/h] 363.972
Manifold pressure [in w.c.] 6,52
Normal
altitude 0 -
2,000 ft above
sea level
(U.S.A. and
Canada) Fuel consumption [CFH] 133,89
Heat input [BTU/h] 327.575
Manifold pressure [in w.c.] 6,19
L.P.G.
Altitude 2,000
- 4,500 ft
above sea
level (Canada
only) Fuel consumption [CFH] 120,50
Air flow [cfm] 3.250
Power supply 1 ~, 120V, 60Hz
[W] 1.400
Power consumption [A] 12,5
Fuse size (T type) [A] 20
Adjustment of combustion air flap [N°] 3,0
Ring nozzle [in] N. 12 holes x 0,106"
Flue diameter [in] 5,91
Compulsory flue draft [in] 0,05
Maximum air temperature [°F] 250
Max. operating pressure elec. gas valve [psi] 2
Gas inlet connection thread 3/4" NPT
Max Static pressure [in] 0,60
Max length 1 way - dia 20" [ft] 100
Max length 2 ways - dia 16" [ft] 60
Air distribution duct
Max length 3 way - dia 12" [ft] 25
Noise level at 1 m [dBA] 74
Dimensions, L x W x H [in] 82,6 x 33,9 x 48,8
Heater Weight [lb] 430

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2. MAINTENANCE SCHEDULE
Period of service
Service Operation
Daily 2 weeks 6 months Yearly
Inspect the heater X
Inspect the gas hose assembly X
Clean the machine X
Clean the fan blades and the motor X
Check gas supply and manifold
pressure X
Clean the interior shell X
Inspect electrical connections X
Inspect flame head X
Test the burner X
Inspect and clean the combustion
chamber X

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3. MAINTENANCE PROCEDURES
WARNING
Before carrying out any maintenance operation the heater must be disconnected from power supply.
Refer to instruction manual to fully stop the heater. Therefore:
• Stop the machine as instructed
• Turn off the disconnecting switch on the main electric switchboard
• Ensure gas valve supply to the heater is closed
• Wait until the heater has cooled.
Never service heater while it is plugged in, operating, hot or if gas valve supply is not closed.
Severe burns or electrical shock can occur.
3.1 INSPECT THE HEATER AND GAS HOSE ASSEMBLY
Carry out the following controls:
Ensure that heater is not installed where there may be a risk of fire or explosion
Ensure inflammable materials are kept at safe distance
If you smell gas:
oOpen windows
oDo not touch electrical switches
oExtinguish any open flame
Do not operate heater with panels removed
The room or building which is being heated must be sufficiently ventilated so
Ensure air suction and/or supply pipes are not blocked in any way,
Ensure no sheets or covers are resting on the machine or walls
Check the unit is placed in a fixed position;
Ensure the heater is regularly monitored during operation and checked before being started up;
3.2 CLEAN THE MACHINE
Clean the following parts to ensure proper operation:
Burner
oRemove all dirt and debris.
oEnsure that the air intake area is unobstructed.
Hoses, connectors and couplings
oWipe clean with cloth.
Covers/machine exterior
oWipe clean with cloth.
Air inlets/ouputs
oRemove all dirt and debris.
oEnsure that the air intake area is unobstructed.

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3.3 CLEAN THE FAN BLADES AND THE MOTOR
To clean the fan blades and motors, carry out the following procedure:
oRemove the fan guard (a). There are four screws that secure the fan guard.
oInspect and, if necessary, clean the motors using compressed air.
oClean the fan blades using a stiff brush.
oReinstall the fan guard.
a

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3.4 CHECK GAS SUPPLY AND MANIFOLD PRESSURE
To check gas pressure, carry out the following procedure:
oInstall a manometer on inlet pressure port (e)
oInstall a manometer on manifold pressure port (b)
oRun the heater and check gas pressure be as specified in par. 1.
oIf gas supply pressure is lower or higher than specified, then operate on the supply pressure
regulator
oIf manifold pressure is lower or higher than specified, then operate on manifold pressure
regulator (c)
oStop the heater and seal port (e) and port (b)
aGAS SELECTOR VALVE
b MANIFOLD PRESSURE PORT (MANIFOLD)
cMANIFOLD PRESSURE REGULATOR
dMAIN GAS VALVE
eINLET PRESSURE PORT
f SHUT OFF / FIRING VALVE
a
c e
f
b

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3.5 CLEAN THE INTERIOR SHELL
To clean the interior shell, carry out the following procedure:
oRemove the fan guard (a)
oRemove the inspection panel (b).
oUnscrew and remove the four lift bracket screws (c). Carefully raise and maneuver the lift
bracket (d) away from the machine shell cover (e), resting it on the rear frame as shown.
oRemove the six mounting screws and lift the machine shell cover off the machine.
oInspect and clean the interior shell using compressed air.
oRe-install the machine shell cover.
oRe-install the lift bracket.
oRe-install the access cover.
oRe-install the fan guard.
a
b
c
e
d

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3.6 INSPECT ELECTRICAL CONNECTIONS
After disconnecting the power cord, check all electrical connections for the following:
Proper connections.
oBe sure that all connections are complete and tight.
Corrosion.
oClean or replace if necessary.
Damaged wires/connectors.
oReplace if necessary.
Proper ground.

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3.7 INSPECT FLAME HEAD
To inspect and clean flame head, carry out the following procedure:
Remove the access panel (a)
Remove the screw (b) to disconnect the ground wire (c).
Rotate the burner assembly (d) counter-clockwise and remove it from the flame head and air tube
assembly (e).
Perform the required maintenance.
The flame head is attached to the burner assembly. Inspect the flame head for the following:
oWear. Replace if necessary.
oCleanliness. Clean the nozzle ring (f) and air diffuser (g) if necessary.
oThermal stress. Replace if necessary.
oPressure port (h) of air pressure switch: clean if necessary
Reinstall the burner assembly. Refer to the steps below to install the burner assembly:
oPlace the burner assembly into the flame head and air tube assembly.
oRotate the burner assembly clockwise to lock it into place.
oInstall the ground wire using the screw (d).
Reinstall the access panel (a).
b
h
f
g
c
d
e
a

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3.8 TEST THE BURNER
The following instruments are necessary
High-quality combustion analyzer
Two gas pressure meters
To test the burner,, carry out the following procedure:
Follow the combustion analyzer manufacturer’s instructions and the general guidelines below.
Use the access hole (a) in the exhaust stack to connect combustion analyzer probes
Fit one pressure meter on supply pressure port (e) and one pressure meter on manifold pressure
port (b)
a
c e
b

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Take several samples as the heater warms.
Re-adjust the air band (d) and pressure regulator (c), if necessary, until combustion analysis is
within the following parameters:
oO2 content: 3–5%
d

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3.9 INSPECT AND CLEAN THE COMBUSTION CHAMBER
To clean combustion chamber, carry out the following procedure:
Remove inspection and cover panel as for procedure 3.5
Remove screws (a) and remove burner assembly head (b)
Inspect the combustion chamber with light
Clean inside with a wire brush if necessary
Re-install the burner
b
a