Armstrong World Industries 242, 243, 302, 122, 123, 203, 182, 183 Integrated Control Specifications

Models: 183 182 203 123 122 242 302 243

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Service Reference Manual

UNIT COMPONENTS

5-11

Integrated Blower/Ignition Control (*24)

United Technologies Model 1097-400-1

The integrated control combines the actions and purposes of the indi- vidual ignition and blower control boards found on other units. It automati- cally monitors and controls the operation of the gas burners, gas valve, induced draft blower and circulating blower.

The control has a built-in diagnostic function, quick gas valve shutoff and automatic ignition retry when it detects that a fault condition has been corrected. If a fault is detected, the controls goes into fault mode and flashes the single LED indicator at a preset rate for that particular fault condition. (See Diagnostic Flash Code found in Table 4-1 on page 4-8 or Diagnostic Indicator code printed on unit label.)

Integrated Control Specifications

Manufacturer: United Technologies

Model: 1097-400-1

Armstrong P/N 44990-001

Operating Temperature: – 40°F to +175°F

Timing Tolerance: +/– 10%

Input Voltage: 18-30VAC, 50/60 Hz

Combustion Blower: 1/8 HP @ 120/240VAC

Circulating Blower: 1/2 HP @ 120VAC, 1 HP @ 240VAC

Gas Valve: 24VAC, 60 Hz, 1.0 A

UNUSED

ACB

HEAT

ACB

COOL

L1

CMB

BL WR

E

24VAC

FLAM

 

GROUND

 

 

W

G

R

 

C

 

Y

 

 

 

 

 

 

 

 

 

FIGURE 5-8 United Technologies Model 1097 Integrated Control

SRM-HW/HWC 2/99

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Armstrong World Industries 242, 243 Integrated Control Specifications, 8 United Technologies Model 1097 Integrated Control