Beckett CF375 Bedienungsanleitung PDF herunterladen (Seite 4)

RWB 664850 Page 4 Printed in U.S.A.

• If after the re-rate factor is used the required firing rate input exceeds the Adjusted

Maximum Firing Rate for the head setting, a head setting for a higher Adjusted

Maximum Firing rate may be required.

For this example

: If an AFG burner using a V1 head operating at 7000 ft. elevation

requires a firing rate input of 1.40 gph, a change of head setting from 1 to 2 may be

required.

EXAMPLE 4

E-RATING OF THE MAX. FIRING RATE FOR ADJUSTABLE-TYPE BURNER HEAD SETTING @ 7000 FT.

Burner

Model

Head

Setting

Max. Firing Rate

at Head Setting

Elevation Re-rate

Factor

Adjusted Max. Firing

Rate at Head Setting

CF375 SL1 0 1.65 gph X 87.1% = 1.44 gph

CF375 SL1 1 1.75 gph X 87.1% = 1.52 gph

CF375 SL1 3 2.00 gph X 87.1% = 1.74 gph

CF375 SL1 4 2.50 gph X 87.1% = 2.18 gph

CF375 SL1 5 3.00 gph X 87.1% = 2.61 gph

CF375 SL1 6 3.75 gph X 87.1% = 3.27 gph

Note: The above settings are approximate, and can vary depending on actual job conditions

and overfire pressure.

O PROVIDE ADEQUATE OXYGEN IN THE COMBUSTION AIR TO MAINTAIN THE FIRING RATE FOR THE

HEATING LOAD

• If after the re-rate factor is used the required firing rate input exceeds the Adjusted

Maximum Firing Rate for the head setting, a head setting for a higher Adjusted

Maximum Firing rate may be required.

For this example

: If a CF375 burner using an SL1 head operating at 7000 ft. elevation

requires a firing rate input of 2.25 gph, a change of head setting from 4 to 5 may be

required.

Remember--it is important to maintain the BTU input as required by the installation and

specified by the furnace or boiler manufacturer. If you need further assistance, please contact

Beckett Technical Service at 1-800-645-2876 or e-mail our Technical Service Department at

[email protected].

R.W. Beckett Corporation • P.O. Box 1289 • Elyria, Ohio 44036 • (800) 645-2876 • (440) 327-1060 • FAX (440) 327-1064

R.W. Beckett Canada Ltd. • Unit 3 - 430 Laird Road • Guelph, Ontario, Canada N1G 3X7 • (800) 665-6972 • FAX (519) 763-5656

1 2 3 4

HEATING LOAD 2
Elevation 2

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