Burnham Series 8H/8HE Boiler Hoja De Especificaciones

2.14 Boiler shall be manufactured of flake graphite/eutectic cell/ cast iron sections which shall have been

subjected to a hydrostatic pressure test of 2-1/2 times MAWP

at the factory before assembly and

each section shall be marked, stamped or cast with the ASME Code symbol. After section
assembly, the entire block of sections shall be hydrostatically tested at 1-1/2 times MAWP

prior to

shipment. Boiler shall be designed in accordance with the ASME Boiler and Pressure Vessel
Code Section IV requirements.

3. BOILER CONTROLS

3.1 High limit control (a) or (b) below:

(a) shall be automatic reset type suitable for 115 volt 60 Hz.

(b) shall be manual reset type suitable for 115 volt 60 Hz.

3.2 A separate operating control shall be furnished by the contractor in addition to the high limit control and

shall be automatic reset type suitable for 115 volt 60 Hz.

3.3 A low water cut-off shall be furnished and sized on the basis of boiler capacity and pressures involved.

Provide the following:

(a) McDonnell & Miller PS851 Probe Low Water Cut-off (Automatic Reset)

(b) McDonnell & Miller No. 750P-MT Probe Low Water Cut-off (Manual Reset),

(d) McDonnell & Miller No. 63M (Manual Reset)

4. GAS TRAINS & IGNITION SYSTEMS

4.1 Each boiler shall be furnished with an A.G.A. certified gas train.

4.2 The gas control train of each boiler shall be factory assembled and consist of (select option a, b, or c):

Option (a)

(This is standard equipment on 806-807, optional on other sizes with 4.3.c and 4.3.d ignition system)

(Thermocouple controlled gas train when used with 4.3.a and 4.3.c ignition system)

(Electronically controlled gas train when used with 4.3.d ignition system)

a combination 24 volt gas valve with 100% shut-off, a 24 volt solenoid gas valve, and a 1/8” N.P.T.

pressure tapping.

Option (b)

(This is standard equipment on 805, 808-810, optional on 806-807)

(Electronically controlled, EI, gas train - see 4.3.b)

a combination 24 volt redundant gas valve with 100% shut-off and a 1/8’ N.P.T. pressure tapping.

Option (c)

(IRI approved gas train)

two manual shut-off valves, pilot gas filter, pilot shut-off valve, pilot gas pressure regulator, pilot solenoid

gas valve, main gas pressure regulator, dual main motorized gas valves, normally open vent valve, and main high

and low gas pressure switches.

(NOTE TO SPECIFIER: IRI gas trains are factory assembled and shipped separately to be mounted on

the side of the boiler. This will change the minimum side clearance from 1” to 24”.)

4.3 Each boiler ignition system shall be (select option a, b, c, d, e or f ):

Option (a)

(This is standard on 806-807)

(This ignition system must be used only with gas control train, Option a.)

a manually lighted continuous burning pilot, supervised by a thermocouple, and shall provide for 100%

gas shut-off.

Option (b)