York P*DH - Page 29

035-17477-001 Rev. A (801)
Unitary Products Group 29
WITH BURNER BOX COVER IN PLACE WITH BURNER BOX COVER REMOVED
FIGURE 38 : Upflow Models (P*UR/ FG9-UP / G9T-UP) - Reading Gas Pressure
GAS VALVE
OUTLET
PRESSURE TAP
BURNER BOX PRESSURE
REFERENCE HOSE
BURNER BOX
WITH COVER
U-TUBE
MANOMETER
3.5 IN
WATER COLUMN
GAS PRESSURE
SHOWN
TEE
FITTING
6
5
4
3
2
1
0
1
2
3
4
5
6
GAS VALVE
OUTLET
PRESSURE TAP
BURNER BOX
PRESSURE
REFERENCE HOSE
(NOT USED)
U-TUBE
MANOMETER
3.5 IN
WATER COLUMN
GAS PRESSURE
SHOWN
BURNER BOX
WITH COVER
REMOVED
6
5
4
3
2
1
0
1
2
3
4
5
6
WITH BURNER BOX COVER IN PLACE WITH BURNER BOX COVER REMOVED
FIGURE 39 : downflow/Horizontal Models (P*DH/ FG9-DH / G9T-DH) - Reading Gas Pressure
GAS VALVE
OUTLET
PRESSURE
TAP
BURNER BOX
PRESSURE
REFERENCE HOSE
BURNER BOX
WITH COVER
U-TUBE
MANOMETER
3.5 IN
WATER COLUMN
GAS PRESSURE
SHOWN
TEE
FITTING
6
5
4
3
2
1
0
1
2
3
4
5
6
GAS VALVE
OUTLET
PRESSURE
TAP
BURNER BOX
PRESSURE
REFERENCE
HOSE
BURNER BOX WITH
COVER REMOVED
U-TUBE
MANOMETER
3.5 IN
WATER COLUMN
GAS PRESSURE
SHOWN
6
5
4
3
2
1
0
1
2
3
4
5
6