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LP-542 REV. 6.2.16

G. FREEZE PROTECTION FLUIDS ............................................................................................................................................. 11

H. HIGH ELEVATION INSTALLATIONS....................................................................................................................................... 11

PART 3 – TECHNICAL SPECIFICATIONS ............................................................................................................................... 11

PART 4 – PREPARE BOILER LOCATION ............................................................................................................................... 15

A. UNCRATING THE BOILER ...................................................................................................................................................... 15

B. BEFORE LOCATING THE BOILER ......................................................................................................................................... 15

C. LEVELING ................................................................................................................................................................................ 16

D. CLEARANCES FOR SERVICE ACCESS ................................................................................................................................ 17

E. RESIDENTIAL GARAGE AND CLOSET INSTALLATIONS ..................................................................................................... 17

F. EXHAUST VENT AND INTAKE PIPE ....................................................................................................................................... 18

G. PREVENT COMBUSTION AIR CONTAMINATION ................................................................................................................. 18

H. REMOVING A BOILER FROM A COMMON VENT SYSTEM .................................................................................................. 18

I. WALL-MOUNTING THE BOILER .............................................................................................................................................. 19

PART 5 – VENTING ................................................................................................................................................................... 20

A. INTAKE PIPE AND EXHAUST VENT GUIDELINES ................................................................................................................ 20

B. APPROVED VENT MATERIALS .............................................................................................................................................. 22

C. ALLOWED COMBINED VENT LENGTHS ............................................................................................................................... 22

D. TIGHTENING BOILER COLLAR TO EXHAUST VENT AND INTAKE PIPE ............................................................................ 23

E. VENT TERMINATION .............................................................................................................................................................. 24

1. Direct Vent, Two Pipe Roof and Sidewall Vent Terminations ................................................................................................ 24

2. Direct Vent, Optional Horizontal and Vertical Vent Kits ......................................................................................................... 25

3. Snorkel Venting ......................................................................................................................................................................... 26

4. Power Vent, Indoor Combustion Air Installation in Confined or Unconfined Space ........................................................... 27

5. Screen Installation ..................................................................................................................................................................... 29

PART 6 – INSTALL THE CONDENSATE DRAIN ..................................................................................................................... 29

PART 7 – GAS PIPING .............................................................................................................................................................. 30

A. ADDITIONAL PRECAUTION FOR EXCESS FLOW VALVE (EFV) ......................................................................................... 31

B. GAS PIPE SIZING TABLES ..................................................................................................................................................... 31

1. Gas Pipe Sizing .......................................................................................................................................................................... 31

2. Natural Gas Pipe Sizing ............................................................................................................................................................ 31

3. LP (Liquid Propane) Gas Pipe Sizing ....................................................................................................................................... 31

C. GAS CONNECTION REQUIREMENTS ................................................................................................................................... 32

PART 8 – WATER PIPING ........................................................................................................................................................ 33

A. GENERAL PLUMBING CONNECTION GUIDELINES ............................................................................................................. 33

B. BACKFLOW PREVENTER ....................................................................................................................................................... 34

C. CENTRAL HEATING PIPING SYSTEM WATER PIPING METHODS ..................................................................................... 34

D. CIRCULATOR SIZING ............................................................................................................................................................. 34

E. CH PRESSURE RELIEF VALVE .............................................................................................................................................. 43

F. BUILT-IN LOW WATER CUT-OFF (LWCO) ............................................................................................................................. 43

G. OPTIONAL EXTERNAL UL353 MANUAL RESET LOW WATER CUT-OFF (LWCO) INTERFACE KIT ................................. 43

Brand	HTP
Model	UFT-140W
Category	Boiler
Language	English

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