Johnson Controls YORK YPC Series - Page 6

JOHNSON CONTROLS
6
FORM 155.17-N1
ISSUE DATE: 4/1/2013
TABLE OF CONTENTS (CONT'D)
SECTION 11 – STEAM / CONDENSATE PURITY .................................................................................................37
SECTION 12 – BURNER INSTALLATION (POWER FLAME BURNERS) ............................................................39
Model Identification .......................................................................................................................................39
Unpacking and Handling ................................................................................................................................39
SECTION 13 – GAS PIPING DESIGN ....................................................................................................................45
SECTION 14 – OIL PIPING DESIGN ......................................................................................................................47
SECTION 15 – OIL LINE SIZING ...........................................................................................................................51
Instructions For Using Oil Line Sizing Graphs: ...............................................................................................51
SECTION 16 – OIL TANKS ....................................................................................................................................53
SECTION 17 – COMBUSTION AIR REQUIREMENTS .......................................................................................... 55
Louvers and Grills ..........................................................................................................................................55
Air Proving Switch ..........................................................................................................................................56
SECTION 18 – SEALED COMBUSTION
(BURNER FRESH AIR INTAKE DUCT SIZING) ....................................................................................................57
ACFM = SCFM x 460 + T
AIR
°F ...........................................................................................................57
537 ........................................................................................................................................................57
SECTION 19 – CHIMNEY DESIGN AND DRAFT THEORY ...................................................................................59
Draft ................................................................................................................................................................59
Draft control serves two important functions for the ParaFlow
TM
Direct Fired units: .............................. 59
Draft depends on two important factors: ............................................................................................... 59
Temperature Difference .................................................................................................................................. 59
Chimney Height .............................................................................................................................................. 59
Chimney Design Theory ................................................................................................................................. 60
Available Draft (Da) ...............................................................................................................................60
Theoretical Draft (Dt) ............................................................................................................................. 60
Pressure Drop (dP) ...............................................................................................................................60
Wind and Weath er .......................................................................................................................................... 60
Inadequate System Installation ......................................................................................................................60
SECTION 20 – DRAFT CONTROL .........................................................................................................................63
SECTION 21 – BAROMETRIC DAMPERS ............................................................................................................65
SECTION 22 – SEQUENTIAL DRAFT CONTROL (Motorized Draft Control) ..................................................... 67
Backdraft Damper ..........................................................................................................................................67
Not recommended to mount vertically reasons: .................................................................................... 67
SECTION 23 – HIGH STACK TEMPERATURE PROBE .......................................................................................69