Operating instructions

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To avoid burns, scalding, or water damage due to discharge of steam and/or hot water during operation, a discharge

line shall be installed to relief valve outlet connection.

The discharge line shall:

•connect to relief valve outlet and piped down to safe point of disposal.

•be of pipe size equal to or greater than that of the relief valve outlet over the entire length of discharge line;

•have no intervening shutoffvalve between safety relief valve and discharge to atmosphere (do not plug or

place any obstruction in discharge line.

•terminate freely to atmosphere where any discharge will be clearly visible and at no risk of freezing;

•allow complete drainage of the valve and the discharge line;

•be independently supported and securely anchored to avoid applied stress on the relief valve;

•be as short and straight as possible;

•terminate with plain end (not threaded);

•be constructed of material suitable for exposure to temperatures of 375° F;

•or greater.

Refer to local codes and appropriate ASME Boiler and Pressure Vessel Code for additional installation requirements.

1. Place boiler in the selected location (as near chimney as pos- 3.

sible). Your boiler is shipped assembled. You need only to

install the circulator, ball valves, the relief valve with a drain line

to carry any water to a drain, and the drain valve.

Install relief valve on 3/4" pipe nipple in tapped boiler opening.

Pipe the discharge line following guidelines in the preceding

Refer to example shown in Figure 4. The discharge

line pipe size shall be equal or greater than that of the relief

valve outlet over the entire length of discharge line with no

intervening shutoffvalve between the safety relief valve and dis-

charge to atmosphere. The discharge line shall terminate with

a plain end to atmosphere where any discharge will be clearly

visible and is at no risk of freezing. The discharge line shall be

independently supported to avoid applied stress on the relief

valve. The installation shall allow complete drainage of the

relief valve and the discharge line. The discharge line shall be as

short and straight as possible and constructed of a material suit-

able for exposure to temperatures of 375°F or greater.

Referto localcodes and appropriate ASMEBoilerand Pressure

VesselCode for additional installation requirements.

Install Drain Valveon lowerleft side of boiler as marked.

Install Temperature and Pressure Gauge into 1A,,bushing

threaded in tee furnished with supply piping See Figures 5

and 6).

Connect Supply and Return Lines to boiler, as shown in Fig-

ures 5 and 6. The connections may require certain additional

fittings and parts.