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Pennco 15B045FE User Manual

Page 25

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Gas input to boiler can be adjusted by removing protective

cap on pressure regulator Figure 14, Page 20 and
turning screw clockwise

to increase input and

counterclockwise

to decrease input. Manifold

pressures are taken at outlet side of gas valve. See

Figure 14, Page 20. To check for proper flow of natural

gas to boiler, divide input rate shown on rating plate by

heating value of gas obtained from local gas company. This

will determine number of cubic feet of gas required per

hour. With all other gas appliances off, determine flow of

gas through meter for two minutes and multiply by 30 to

get hourly rate. Make minor adjustments to gas input as

described above.

Burner orifices should be changed if final manifold pressure

varies more than plus or minus 0.3 inches water column

from specified pressure.

Primary air adjustment is not necessary, therefore air

shutters are not furnished as standard equipment. Air

shutters can be furnished on request where required by

local codes or conditions.

CHECK SAFETY CONTROL CIRCUIT. Ignition system

safety shutoff device must be tested after placing boiler in

operation.

Intermittent Pilot: With main burner operating, turn

pilot gas adjusting screw clockwise

until pilot gas is

turned off. See Figure 14, Page 20 Within 90 seconds main

gas control should close, shutting off gas to main burner.

High Limit Control (Figure 23): Remove cover and note

temperature setting. Decrease this setting to minimum

and operate boiler. When boiler water temperature exceeds

control temperature setting, control will open circuit,

closing automatic main gas valve.

Front Lower

Jacket Panel

High Limit

Control

Gas Valve

15 - CHECKING GAS INPUT RATE TO BOILER

Figure 19

- Boiler Right Side and Front

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