Crown Aruba 5 Installation Manual

WARNING

• SHUT OFF GAS SUPPLY BEFORE SERVICING THE BOILER.

• ALL GAS PIPING MUST BE GAS TIGHT. USE GAS RATED THREAD COMPOUND

ON ALL THREADED JOINTS TO AVOID LEAKS, WHICH MAY RESULT IN FIRE OR

EXPLOSION.

• SIZE GAS PIPING, REGULATORS, VALVES AND METERS SO AS TO PROVIDE AN

ADEQUATE GAS FLOW AND PRESSURE TO THE BOILER DURING OPERATION.

FAILURE TO DO SO MAY CAUSE POOR COMBUSTION, NOISE, INJURY OR

DEATH.

FIGURE 7.1: GAS CONNECTION TO BOILER

f) After it has been determined that each appliance remaining connected to the common venting system properly vents

when tested as outlined above, return doors, windows, exhaust fans, replace dampers and any other gas-burning

appliances to their previous condition of use.

g) Any improper operation of the common venting system should be corrected so the installation conforms with the

National Fuel Gas Code, ANSI Z223.1. When resizing any portion of the common venting system, the common

venting system should be resized to approach the minimum size as determined using the appropriate tables in Part 10

of the National Fuel Gas Code, ANSI Z223.1.

VII Gas Piping

Gas piping to the boiler must be sized to deliver adequate gas for the boiler to re at the nameplate input at a line pressure

between the minimum and maximum values shown on the rating plate. For more information on gas line sizing, consult the

utility or the National Fuel Gas Code.

Figure 7.1 shows typical gas piping connection to the boiler. A sediment trap must be installed upstream of all gas controls.

Install a manual shut-o valve outside the jacket and ground joint union as shown.

The boiler and its gas connection must be leak tested before placing the boiler in operation. When doing this, the boiler and

its individual shut-o must be disconnected from the rest of the system during any pressure testing of that system at pressures

in excess of 1/2 psi. When pressure testing the gas system at pressures of 1/2 psi or less, isolate the boiler from the gas supply

system by closing its individual manual shut-o valve.