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PILOT

ADJUSTMENT

MAIN BURNER

ORIFICE

The pilot flame can be obsel-ved by opening the pilot lighting

hole cover. The pilot flame should surround the top 3/8 to L/_,

inch of the therlnocouple (see Figmre 2). If the flame needs

adjusting, first locate the pilot adjustment screw cap and relnove.

Adjustment screw is underneath (see Figmre 1). To increase the

flame, turn the pilot adjustment screw counterclockwise

l_'N.

To decrease the flame, mm the screw cloc_vise

i"X.

NOTE:

The pilot is unremllated. If incoming line pressure is more than

7" w.c. Natural Gas or 11" w.c. for L.R Gas, the pilot flame size

should be decreased.

FIGURE 1

PILOT

FLAME

ADJUST-

MENT

Pilot flame

should

envelop

3/8 to 1/2

inch on the

tip of the

enerator.

Pilot Adj. Screw

3/8 TO

1/2 INCH

FIGURE 2

RADIANTS

AND

GLASS

PANELS

FOR ALL VCR MODELS

(See Figure 9

Replacement Parts Section)

INSTALL GLASS AND RADIANTS AS FOLLOWS:

STEP 1. Remove three screws liom under top of opening in

bezel t_rameassembly.

STEP2. Pull top ofbezeI down and lay aside.

STEP 3. Remove glass liom bottom pad in shipping carton.

STEP 4. Remove carton containing radiants liom cavity of

combustion chamber.

STEP 5. Remove radiants from carton and install by tilting

backwards and lilting at the same time into opening. Place

the radiants on the burner radiants supports. The radiants

must be straight.

Never operate heater if any radiant is

tilted to liont or rear.

Continued

This appliance was shipped from the factory with an orifice

sized to give the correct gas input using the gas for which the

heater was equipped. There may be local conditions, such as

variation in gas pressure or BTU content of the gas, which

may be cause for a change in the orifice. The gas company

supplying the fuel or the installing contractor should check

the gas input rate.

If the rate exceeds the "BTUH INPUT" on the rating plate by

5%, the orifice should be replaced with a smaller orifice by a

qualified technician to reduce the input to the rating plate

value.

The input rate may need to be adjusted for elevation. See the

following charts to deterlnine the correct orifice size t\3ryour

Model Number and elevation. These orifice sizes are based

on a heating value of 1020 for Natural Gas and 2500 for L.R

Gas.

CAUTION:

As elevation increases, derating is necessary for

the sate and proper operation of this heater. Do not increase

the Btu input rate by increasing

the orifice size or gas

pressure. Allow for elevation derating when sizing gas heating

equipment.

NATURAL

GAS

SPECIFIC

ELEVATIONS

Model

0to

2,000-

4,000-

6,000-

8,000'

No.

2,000'

4,000'

6,000'

8,000'

10,000'

VC201

VC351

VC501

VC701

VCR351

VCR501

VCR701

ORDER KIT #49820 45-1 HIGH ALTITUDE KIT

L.P. GAS

SPECIFIC

ELEVATIONS

Model

0 to

2,000-

4,000 -

6,000 -

8,000'

No.

2.000'

4,000'

6,000'

8,000'

10,000'

VC202

1.31rnn

VC352 1.651rnn

VC502

VC702

VCR352 1.651rnn

VCR502

VCR702

ORDER KIT #49820 45-1 HIGH ALTITUDE KIT

STEP 6. Install glass panels by inserting top edge into upper

retainer and lower into bottom support, and slide glass into

position. Do not allow a crack between the two glass panels.

Never operate heater with either glass missing or cracked.

STEP 7. Re-install bezel by placing bezel tabs over lower liont

and swing bezel into position and secure with three screws.

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