GAS SUPPLY CONNECTIONS

ROBERTSHAW MV

Gas piping must have a sediment trap ahead of

Gas Pressure Adjustment

the heater gas controls, and a manual shut-off valve

 

located outside the heater jacket. All gas piping should

 

be tested after installation in accordance with local

 

codes.

 

Manual Shut Off

 

Valve

 

Sediment TrapFig. # 8156.1

CAUTION: The heater and its manual shut off valve must be disconnected from the gas supply during any pressure testing of that system at test pressures in excess of 1/2 psig (3.45 KPA). Dissipate test pressure in the gas supply line before reconnecting the heater and its manual shut off valve to gas supply line.

FAILURE TO FOLLOW THIS PROCEDURE MAY DAMAGE THE GAS VALVE. OVER PRES-

SURED GAS VALVES ARE

NOT COVERED BY

WARRANTY. The heater and

its gas connections

shall be leak tested before placing the appliance in operation. Use soapy water for leak test. Do NOT use open flame.

NOTE: Do not use teflon tape on gas line pipe thread. A flexible sealant is recommended.

A minimum of 7" W.C. and a maximum of 14" W.C. upstream pressure under load, and no load conditions must be provided for natural gas or a minimum of 12" W. C. and a maximum of 14" for propane gas.

PIPE SIZING FOR GAS CONNECTIONS

MAXIMUM EQUIVALENT PIPE LENGTH

3

Natural Gas 1000 BTU/ FT . 60 Specific Gravity

@ 0.5" WC Pressure Drop

Propane Gas 2500 BTU/ FT 3 l.53 Specific Gravity

@ 0.5" WC Pressure Drop

 

 

1/2"

3/4"

 

 

 

 

 

 

 

 

MODEL

N

 

P

N

 

P

 

 

 

 

 

 

 

105B

25

 

55

95

 

200

 

 

 

 

 

 

 

GAS PRESSURE REGULATOR

The gas pressure regulator is preset and sealed at 4" W.C. for natural gas, and ll" W. C. for propane gas. Between the gas valve and the burners is a l/8" pipe plug. The pressure at this point, taken with a manome- ter, should be about 3.7" W. C. natural gas and l0.5" W.C. propane gas. If an adjustment is needed, remove

seal and turn adjustment screw clockwise

to

increase pressure or counter-clockwise

to

decrease pressure.

 

Fig. # 9263

HONEYWELL VALVE MV

Gas Pressure Adjustment

Fig. # 9265

HONEYWELL IID

VR 8300 GAS VALVE

Gas Pressure Adjustment

Fig. # 9264

12

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Raypak 105B installation instructions GAS Supply Connections, Pipe Sizing for GAS Connections
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105B specifications

Raypak 105B is a well-engineered boiler designed for various heating applications. Known for its efficiency and reliability, the Raypak 105B is a preferred choice among professionals in both residential and commercial settings.

One of the main features of the Raypak 105B is its compact design. Measuring in at a size that allows for easy installation, it is ideal for locations where space is at a premium. The unit's lightweight materials contribute to a reduced load on structural components of buildings, making it an efficient option for retrofits and new installations alike.

The Raypak 105B operates on advanced technology that ensures optimal performance and energy efficiency. The unit boasts a high thermal efficiency rating, which translates to lower operational costs for users. Its innovative control system monitors and adjusts the heating output, ensuring that the boiler operates at peak efficiency while maintaining comfort.

Another significant characteristic of the Raypak 105B is its built-in hydrostat. This feature automatically controls water temperature, providing a safeguard against overheating and improving overall safety. The unit's durable stainless steel heat exchanger enhances the longevity of the product while also resisting corrosion, a common issue in boiler systems.

In terms of environmental considerations, the Raypak 105B is designed to meet or exceed industry standards for emissions. This not only helps users comply with regulations but also contributes to a reduced carbon footprint. Additionally, the natural gas or propane options add versatility in terms of fuel choice, catering to a wide range of applications.

Ease of maintenance is another advantage offered by the Raypak 105B. The unit is designed to provide straightforward access to key components, minimizing operational downtime when servicing is needed. This thoughtful design element supports both residential and commercial needs, ensuring reliability in various settings.

In summary, the Raypak 105B stands out due to its compact design, high thermal efficiency, advanced control systems, and robust safety features. With its focus on longevity, ease of maintenance, and environmental compliance, the Raypak 105B continues to be a leading choice for efficient heating solutions in diverse applications. Its reputation for reliability makes it a trusted option for those in need of dependable heating solutions.
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