Gas Piping, Gas Pressure, Gas Connection

Pentax N-0751M-OD Gas Piping, Measuring Gas Pressure Gas Meter, Gas Connection

9. Gas Piping

Follow the instructions from the gas supplier.

The appliance and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1⁄2 psi (3.5 kPa).

The Appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1⁄2 psi (3.5 kPa).

The appliance and its gas connections must be leak tested before placing the appliance in operation.

The inlet gas pressure must be within the range specified. This is for the purposes of input adjustment.

In order to choose the proper size for the gas line, consult local codes or the National Fuel Gas Code ANSI Z223.1.

Gas Pressure

Size the gas line according to total btuh demand of the building and length from the meter or regulator so that the following supply pressures are available even at maximum demand:

Natural Gas Supply Pressure

Min. 4" WC

Max. 10.5" WC

LP Gas Supply Pressure

Min. 8" WC

Max. 14" WC

Measuring Gas Pressure

Gas Meter

Select a gas meter capable of supplying the entire btuh demand of all gas appliances in the building.

Gas Connection

•Do not use piping with a diameter smaller than the inlet diameter of the water heater.

•Gas flex lines are not recommended unless they are rated for 199,900 btuh.

•Install a gas shutoff valve on the supply line.

•Use only approved gas piping materials.

In order to check the gas supply pressure to the unit, a tap is provided on the gas inlet. Remove the hex head philips screw from the tap, and connect a manometer using a silicon tube.

In order to check the gas manifold pressure, a pair of taps are provided on the gas valve inside the unit.

The pressure can be checked either by removing the hex head philips screw and connecting a manometer with a silicon tube, or by removing the 1/8" NPT screw with an allen wrench and connecting the appropriate pressure gauge.

Sample Gas Line

Noritz Gas Water Heater

(199,900 Btuh)

Barbecue

(50,000 Btuh)

Outlet E

Outlet A

Clothes Dryer

3m (10')

(35,000 Btuh)

3m (10')

Outlet C

1.5m (5')

Section 1

Section 4

Section 3 Section 2

1.5m (5')

3m (10')

1.5m (5')

Outlet D

Outlet B

3m (10')

Gas Fireplace

Gas Range Stove

(25,000 Btuh)

(65,000 Btuh)

Natural Gas
Meter	**See next page for the pipe capacity charts.
	**See next page for the pipe capacity charts.

Instructions

1.Size each outlet branch starting from the furthest using the Btuh required and the length from the meter.

2.Size each section of the main line using the length to the furthest outlet and the Btuh required by everything after that section.

Sample Calculation

Outlet A: 13.5m (45') (Use 15m (50')), 50,000 Btuh requires 1/2"

Outlet B: 12m (40'), 65,000 Btuh requires 1/2"

Section 1: 13.5m (45') (Use 15m (50')), 115,000 Btuh requires 3/4"

Outlet C: 9m (30'), 35,000 Btuh requires 1/2"

Section 2: 13.5m (45') (Use 15m (50')), 150,000 Btuh requires 3/4"

Outlet D: 7.5m (25') (Use 9m (30')), 25,000 Btuh requires 1/2"

Section 3: 13.5m (45') (Use 15m (50')), 175,000 Btuh requires 1"

Outlet E: 7.5m (25') (Use 9m (30')), 199,900 Btuh requires 3/4"

Section 4: 13.5m (45') (Use 15m (50')), 374,900 Btuh requires 1-1/4"

N-0751M-OD, N-0751M specifications

The Pentax N-0751M and N-0751M-OD are advanced digital cameras designed primarily for outdoor and rugged environments. These models exemplify the blend of functionality and durability that Pentax is known for, appealing to both photography enthusiasts and professionals who require reliable equipment in demanding conditions.

One of the standout features of the N-0751M and its counterpart, the N-0751M-OD, is their robust construction. Built to withstand harsh environments, these cameras are weather-resistant, ensuring that they can handle rain, dust, and extreme temperatures. This makes them ideal for nature photographers, adventure enthusiasts, and even those who work in challenging conditions.

The N-0751M series is equipped with a high-resolution sensor that captures stunning images with remarkable clarity and detail. The camera features an advanced image processing engine that enhances color accuracy and dynamic range, allowing users to create vibrant and lifelike photos. This sensor also performs exceptionally well in low-light environments, making it versatile for various shooting situations.

Another key characteristic of the N-0751M and N-0751M-OD is their fast and responsive autofocus system. This ensures that users can quickly lock onto their subjects, which is critical for capturing fleeting moments, whether in wildlife photography or action sports. The cameras also come with multiple autofocus modes and options, providing photographers with the flexibility to choose the best setting for their shooting style.

In terms of usability, the N-0751M series features an intuitive interface with customizable settings that allow users to adapt the camera to their personal preferences. The ergonomic design promotes comfort during extended shooting sessions, making it easy to navigate through menus and settings quickly.

For connectivity, the N-0751M and N-0751M-OD come equipped with Wi-Fi capabilities, facilitating easy sharing and remote control through a smartphone app. This enables photographers to transfer images wirelessly and control the camera from a distance, enhancing the shooting experience.

In summary, the Pentax N-0751M and N-0751M-OD embody the perfect combination of durability, image quality, and user-friendly technology. With robust features that cater to professional demands, these cameras stand out as reliable tools for capturing stunning images in any environment. Whether for work or passion, photographers can count on the N-0751M series to deliver superior performance and exceptional results.