Atwood AFSAD12121 Manual de instruções - Página 6

Procurar online ou descarregar pdf Manual de instruções para Forno Atwood AFSAD12121. Atwood AFSAD12121 17 páginas. Af series

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POWER SUPPLY

Atwood Mobile Products LLC highly recommends the use of an

electronic (solid-state) converter with clean power output. This will

assure extended life of the electronic controls and motor beyond

typical linear converter applications.

Conductor Sizing Table 6

– Maximum 10% Voltage Drop – (12 VDC)

Current draw (AMPS)

AMPS

Max. Length of SAE conductor (in feet) from source to

Gage



This furnace designed for negative ground 12 volts DC only. DO NOT

attempt to alter furnace for a positive ground system or connect the

furnace directly to 120 volts, AC. Damage to furnace components will

occur and warranty will be voided.



Use a minimum of 18 GA wire to minimize voltage drop. Furnace must

be installed so electrical components are protected from water. To

make electrical connections see wiring diagrams.



For best furnace performance when power supply is from a converter

equipped with a charging port, wire converter to furnace parallel with

battery. This provides consistent voltage to furnace, increasing

component life, filtering power surges and AC spikes.



All units are supplied with a power switch which when turned off during

servicing will remove power through furnace wiring. Switch must be in

the ON position for furnace to operate.



Route wiring to the furnace.



Connect red wire to positive +12VDC of power supply.



Connect black wire to ground of power supply.



Connect Thermostat +12 VDC blue wire to power supply using 22-18

GA stranded wire.



Connect Thermostat blue wire to the thermostat lead using minimum

22-18 GA stranded wire.



All wiring shall be installed so the electrical components are protected

from water.

THERMOSTAT INSTALLATION



Thermostats not supplied. Purchase a thermostat rated for 12 VDC or

24 VAC, Minimum 1 AMP rating see Atwood parts list for thermostat

numbers.



Be sure all electrical power to the furnace is disconnected.



The thermostats are very sensitive, HANDLE WITH CARE AT ALL

TIMES.



Pick a dry area where air circulation is good.



Do not install the thermostat where there are unusual heating

conditions: such as direct sunlight, heat producing appliances

(television, radio, wall lamp, etc.) or a furnace or air conditioner output

registers.



Locate thermostat 48" to 54" above main living area floor on an

INTERIOR wall when possible



EXTERIOR wall location must have a 3/4" spacer between thermostat

and exterior wall.



Follow manufacture's installation instructions provided with thermostat.

OPERATING INSTRUCTIONS

FIRE OR EXPLOSION

Do not operate furnace while vehicle is in motion or being

towed



During initial firing of this furnace, a burn-off of excess oils remaining

from manufacturing process may cause smoking or fumes for 5-10

minutes.



NOTE: if furnace should lock out, the blower will go off in 90 seconds

and remain off until unit is reset by reactivating the thermostat.

device

WARNING

Stop! Read Users Information Manual supplied with

furnace.

Turn the manual valve (if so equipped) or the valve at the outside LP

tank to the "OFF"" position. Do NOT force. NOTE: This furnace is

equipped with a valve shut-off switch with switch in "OFF" position.

Gas will not flow to burner nor will the furnace operate. Turn switch to

"ON" position.

Set thermostat above room temperature to begin blower operation. A

slight delay will occur before the blower comes on. Allow blower to run

for 1 minute for combustion chamber purge cycle. If blower does not

come on or stops before ignition cycle, go to shut down and contact

your dealer or a local recreational vehicle service agency.

After 1 minute, move thermostat lever below room temperature. Blower

will remain on. Wait approximately 2 minutes for blower to go off.

Open manual shut-off valve (if so equipped) or the valve at the outside

LP tank. Correct operation characteristics depend on the valve being

positioned fully open. Never attempt to operate with a valve partially

closed.

Set thermostat lever to desired setting. If set above room temperature,

blower will come on.

Allow 30 seconds for main burner to light after blower comes on. This

furnace is equipped with an ignition device that automatically lights the

burner. DO NOT try to light the burner by hand.

If burner does not light, repeat Steps 1 through six.

If after three (3) attempts with no ignition, go to shut down and contact

your dealer or a local recreational vehicle service agency. Do not

continue to cycle furnace through thermostat in an attempt to get

ignition.

TO SHUT DOWN

Set the thermostat to lowest setting, then move lever to "OFF" position.

Turn manual shut off valve (if so equipped) to the "OFF" position. Do

not force.

SYSTEM CHECKS

PROPANE GAS PRESSURE TEST

The furnace and any individual shut-off valve must be disconnected

from gas supply piping system during any pressure testing of system at

test pressures of more than 1/2" PSI.

Before furnace is connected, piping systems must be tested to be leak

free. The test must maintain air pressure of a least 6" of mercury or 3"

PSI for at least 10 minutes.

The entire piping system must be maintained within a range of 10 to

14" WC when all appliances are in operation. Test gas connections for

leakage with a leak test solution.

Ignition control diagnostic codes

The following charts give the diagnostic codes given by the ignition

control when faults are present.



A soft lockout is a timed condition that will make additional

attempts to correct the problem. A hard lookout requires resetting

of the thermostat or turning the power switch off, then back on.

DIAGNOSTICS CHART

FAULT

Internal Circuit Board

Failure

Limit Switch/Airflow

Problems

Flame Sense Fault

Ignition Lockout Fault

Standard 3 tries for Ignition Controls

LED INDICATION

Steady On, No Flashing

1-Flash With 3-Second

Pause

2-Flashes With 3-Second

Pause

3-Flashes With 3-Second

Pause

LOCKOUT

Hard

Soft

Hard

Soft (after 1 hr)