QUINCY HYDRONIC TECHNOLOGY Riva FP Installation Manual download pdf (Page 25)

RIVA PLUS MANUAL 25

10. Gas Pipe Connections

Gas supply piping is to be sized and installed properly in order to provide a supply of gas sufﬁ -

cient to meet the maximum demand without undue loss of pressure between the meter and the

boiler. Consult with the National Fuel Gas Code ANSI Z223.1 for proper sizing of gas piping

for various lengths and diameters.

The boiler must be isolated from the gas supply piping system by closing its individual 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).

Figure 10.1

A) Manual T-handle Shutoff Valve

B) Pressure Gauge Port

C) Flexible Gas Line to Burner

D) Male Union ¾” NPT

E) Pipe Cap

F) 1” X 1” X ¾” TEE

Note: Height of valve above ground level to

conform to local codes, if any. Massa-

chusetts statecode requires gas shut

off to be a tee handled gas cock.

Locate a drop pipe adjacent to, but not in front of the boiler. Locate a tee (F) in the drop pipe at

the same elevation as the gas inlet connection to the boiler. Extend the drop line with a nipple

towards the ﬂ oor and cap to form a sediment trap (E). Install a shut off valve (A) before the tee

with sediment trap and a union after the tee before the combination gas valve (D).

When installing the boiler, make sure a pipe compound resistant to the action of liqueﬁ ed petro-

leum is used. Check piping for leaks. Always check leaks with a water and soap solution.

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

boiler 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).

WARNINGS

DO NOT USE A FLAME FOR CHECKING GAS LEAKS

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QUINCY HYDRONIC TECHNOLOGY Riva FP Installation Manual Page 25