Bryant 453 Betriebsanleitung PDF herunterladen (Seite 14)

7. The adjacent chart specifies

the maximum pressure (high

fire) and minimum pressure

(low fire) for the burner opera-

tion. The Combination Control

modulates the pressure to the

burner between this mini-

mum/maximum range based on

ambient temperature, refrigera-

tor load, and thermostat setting.

8. Access to the combination con-

trol is gained by removing (2)

knobs and (6) screws as shown

in Figure 3.18. The Combination

Control needs not be removed

for the pressure check.

9. Use a 3/16" allen wrench to

remove the plug and a 1/8"

NPT nipple to install in pres-

sure tap fitting.

10. Figure 3.29A represents a possible defective combination control, a

clogged gas filter or a kinked supply line. Figure 3.29B indicates proper

gas pressure in a properly functioning refrigerator.

B101

Gas Pressure Settings For Refrigerator

(Inlet Gas Pressure at 11"W.C.)

Model High Fire Low Fire

442, 443 10.5" To 10.9" W.C. 1.2" To 2.4" W.C.

452, 453 10.5" To 10.9" W.C. 1.2" To 2.4" W.C.

462, 463 10.5" To 10.9" W.C. .8" To 1.8" W.C.

482, 483 10.5" To 10.9" W.C. .8" To 1.8" W.C.

See Step # 7 for proper operation of combination control

Figure 3.29A Incorrect Manometer Reading

(warm refrigerator)

Figure 3.29B Correct Manometer Reading

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Bryant 453 Betriebsanleitung Seite 14