Utica Boilers UB95M-200 Installationsanweisungen

Burn and scald hazard.  Safety relief valve could       

discharge steam or hot water during operation.       

Install discharge piping per these instructions.

     

Installation of (supplied) safety relief valve shall conform to 

ANSI/ASME Boiler and Pressure Vessel Code, Section IV.  

• Install furnished safety relief valve using 3/4” pipe 

fittings provided with boiler. See Figure 2.

• Install safety relief valve with spindle in vertical 

position.

• Do not install shutoff valve between boiler and safety 

relief valve.

• Install discharge piping from safety relief valve.  See 

Figure 2.

• Use ¾” or larger pipe.

• Use pipe suitable for temperatures of 375°F (191°C) or 

greater.

• Individual boiler discharge piping shall be independent 

of other discharge piping.

• Size and arrange discharge piping to avoid reducing 

safety relief valve relieving capacity below minimum 

relief valve capacity stated on rating plate.

• Run pipe as short and straight as possible to location 

protecting user from scalding.

• Install union, if used, close to safety relief valve outlet.

• Install elbow(s), if used, close to safety relief valve 

outlet and downstream of union (if used).

• Terminate pipe with plain end (not threaded).

• Determine required system fill pressure, system design 

temperature, and system water content. 

• Boiler contains 2.6 gallons (US). Size expansion tank 

accordingly. 

• Consult expansion tank manufacturer for proper sizing 

information. Connect properly sized expansion tank 

(not furnished) as shown in

 

Figure 3 for diaphragm 

type expansion tank. 

• Adjust tank air pressure on diaphragm type expansion 

tanks to match system fill pressure. 

• Install air vent (furnished) as shown for diaphragm 

type expansion tank system only.

• Install make-up water connections as show. 

• If pressure reducing valve is used, adjust to match 

system fill pressure. 

• Verify clean water supply is available when connecting 

cold make-up water supply to boiler. 

• Use sand strainer at pump if water supply is from well 

or pump.

GATE VALVE

REDUCED PRESSURE 
BACKFLOW PREVENTER

FEED 
WATER

PRESSURE 
REDUCING VALVE

AIR SCOOP

DIAPHRAGM TYPE
EXPANSION TANK

SUPPLY PIPING

Check local codes 

for maximum 

distance from 

floor.

FLOOR

Safety Relief Valve