HTP EFTC-199W - Before Operation Checks; Combustion Air Intake Safety

5
LP-520 REV. 5.1.17
E. WATER CHEMISTRY ............................................................................................................................................................... 10
F. FREEZE PROTECTION ........................................................................................................................................................... 10
G. SCALDING ............................................................................................................................................................................... 10
H. HIGH ELEVATION INSTALLATIONS....................................................................................................................................... 11
PART 3 – TECHNICAL SPECIFICATIONS ............................................................................................................................... 11
PART 4 – PREPARE APPLIANCE LOCATION ........................................................................................................................ 14
A. UNCRATING THE APPLIANCE ............................................................................................................................................... 14
B. BEFORE LOCATING THE APPLIANCE .................................................................................................................................. 15
C. LEVELING ................................................................................................................................................................................ 16
D. CLEARANCES FOR SERVICE ACCESS ................................................................................................................................ 16
E. RESIDENTIAL GARAGE AND CLOSET INSTALLATIONS ..................................................................................................... 17
F. EXHAUST VENT AND INTAKE PIPE ....................................................................................................................................... 17
G. CARBON MONOXIDE DETECTORS ...................................................................................................................................... 17
H. PREVENT COMBUSTION AIR CONTAMINATION ................................................................................................................. 18
I. REMOVING AN APPLIANCE FROM A COMMON VENT SYSTEM .......................................................................................... 18
J. WALL-MOUNTING THE APPLIANCE ....................................................................................................................................... 19
K. FLOW RESTRICTOR ............................................................................................................................................................... 19
PART 5 – VENTING ................................................................................................................................................................... 21
A. INTAKE PIPE AND EXHAUST VENT GUIDELINES ................................................................................................................ 21
B. APPROVED VENT MATERIALS .............................................................................................................................................. 25
C. ALLOWED COMBINED VENT LENGTHS ............................................................................................................................... 25
D. TIGHTENING APPLIANCE COLLAR TO EXHAUST VENT AND INTAKE PIPE ..................................................................... 26
E. VENT TERMINATION .............................................................................................................................................................. 27
1. Direct Vent, Two Pipe Roof and Sidewall Vent Terminations ................................................................................................ 27
2. Direct Vent, Optional Horizontal and Vertical Vent Kits ......................................................................................................... 28
3. Screen Installation ..................................................................................................................................................................... 28
4. Power Venting, Indoor Combustion Air Installation in Confined or Unconfined Space ...................................................... 29
PART 6 – INSTALL THE CONDENSATE DRAIN ..................................................................................................................... 31
PART 7 – GAS PIPING .............................................................................................................................................................. 32
A. GAS PIPE SIZING TABLES ..................................................................................................................................................... 32
1. Gas Pipe Sizing .......................................................................................................................................................................... 32
2. Natural Gas Pipe Sizing ............................................................................................................................................................ 32
3. LP (Liquid Propane) Gas Pipe Sizing ....................................................................................................................................... 33
B. GAS CONNECTION REQUIREMENTS ................................................................................................................................... 33
PART 8 – WATER PIPING ........................................................................................................................................................ 35
A. GENERAL PLUMBING CONNECTION GUIDELINES ............................................................................................................. 35
B. DHW PIPING ............................................................................................................................................................................ 37
C. CENTRAL HEATING PIPING SYSTEM WATER PIPING METHODS ..................................................................................... 37
D. CH AND DHW PRESSURE RELIEF VALVES ......................................................................................................................... 42
PART 9 – CONNECT ELECTRICAL POWER / INITIAL STARTUP ......................................................................................... 42
A. GENERAL OPERATING CONDITIONS ................................................................................................................................... 43