Economite RE32 Manual de instruções de instalação e manutenção - Página 5

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VII MAIN GAS SPUD

Standard burners are approved for use with NATURAL or

PROPANE gas and should be used only with the gas specified

on the rating plate.

As shipped, the installed NATURAL gas spud has a #8

(.199) drill orifice size (PROPANE a #25 [.149]), for an input

capacity range of approximately 85 to 125 MBH (PROPANE 75

to 110 MBH). The combination valve main gas pressure

regulator is set to provide 2.0" W.C. manifold gas pressure for a

minimum spud input and the blower air shutter is set for

maximum spud input, 11 turns from full closed (PROPANE 9

turns), to provide a lean gas/air mixture for initial start up.

If a standard NATURAL gas Model RE32 is to be used with

PROPANE gas, a conversion kit which contains a .025 Pilot

Spud, a 1/8" main spud and a PROPANE label is available.

Change the pilot spud, affix the PROPANE label over the NAT

designation on the rating plate and install the appropriate size

main spud as detailed below.

If the required firing rate does not fall within the range of the

installed spud, or if converting to PROPANE gas, select the

correct capacity range from Table 3 and, if so indicated, the

spud with the correct orifice size (stamped with inch diameter)

from the spare spud bag. If the required firing rate is at the

minimum of capacity range, select the next lower range.

Remove the installed spud and spring assembly, select new

spud and assemble to spring, install assembly (spud first),

spring only or neither, as shown for the capacity range

selected per Table 3.

WARNING: Reposition the primary air shutter for the

maximum firing rate of the selected capacity range. Do not

change the combination valve main gas pressure regulator

setting at this time.

CAUTION: The approximate air and gas settings

described above are for initial start up only. Final settings

must

made

accordance

Instructions for adjustment of the manifold gas pressure

are detailed in Section XI.

FIGURE 7 Piping Connections

VIII INITIAL START UP/ADJUSTMENT

WARNING:

Ignition

observations into combustion chamber only with Main

Manual Shut-Off Valve closed. Confirm that gas utilization

equipment does not contain any accumulated gases.

Purge as described in Step 3 below.

NOTE: Standard burners are shipped with the combination

valve pilot adjustment set to provide a permissible pilot flame

gas pressure when the gas pressure at the inlet to the

combination valve is within 4.0" - 6.0" W.C. NATURAL and

PROPANE. If the inlet gas pressure is not suitable, refer to

TROUBLE CHART, Section II.C.

with

Section

automatic.

Make

*Spud orifice size and approximate shutter and manifold

VIII.

gas pressure settings; as shipped.

Orifice range with 4.0" W.C. inlet pressure

Orifice range with 5.0" W.C. inlet pressure

Data shown is approximate and based on "0" overfire

pressure at sea level.

TABLE 3: Spud Capacity and Preliminary Gas

Check the burner piping and valves for gas leaks by

applying a weak liquid soap solution to unions and joints

with the gas supply on. Leakage will be indicated by the

appearance of soap bubbles. Locate and correct all gas

leaks before proceeding.

WARNING: DO NOT USE OPEN FLAME.

2. Purging the air from the gas line at this point will

expedite the first start as described below.

CAUTION: Purge outside the building.

purge into the gas utilization equipment.

3. To purge the gas utilization equipment and chimney of any

accumulated gases, turn Manual Gas Cock Knob on the

Combination Valve to OFF, turn burner power ON and set

the operating control to ON or thermostat to call for heat.

Let the blower run long enough to accomplish four air

changes but not less than five minutes.

CAUTION: Make sure that the capacity range of

the installed spud, and the preliminary gas pressure is

suitable for the input rating of the gas utilization

spark

equipment. See Section VII and Table 3.

5. Reset the Electronic Control by setting the operating

control

temperature for at least 60 seconds. See Section XII.

6. Turn Manual Gas Cock Knob on Combination Valve to ON.

7. Turn operating control to ON or set thermostat above room

temperature.

operating speed the pilot should light, followed by the main

flame. If the burner fails to light within 90 seconds, the

Electronic Control will shut off the pilot and main valves

and will lock out.

restart, de-energize the control by setting the operating

-5-

and Air Settings

OFF

the

thermostat

A few seconds after the motor reaches

To reset the Electronic Control for

Do not

below

room