Specification Sheet

* 2.11 Steam trim shall include a 3½” round steam pressure gauge with a siphon device. A water level gauge
glass shall be furnished with a needle drain valve in the lower connection. In addition, an ASME
approved safety valve shall be furnished with side outlet porting set to relieve pressure at 15 psi. The
safety valve shall be sized to exceed the gross output of the boiler.
(NOTE TO SPECIFIER: Tankless heaters for domestic water supply are available for the Series 5 water boilers
only. Because of the wide variety of ratings (4½ to 12 GPM) dependent on boiler size, please refer to current
Series 5 literature or trade price book for exact quantity, heater number ratings and control arrangements available.
If a tankless heater is desired, we suggest the following paragraph be added.)
2.12 The boiler shall include _________ (insert (1) 6 thru 9 section or, (2) if desired, 10 thru 26 section)
tankless heater(s) number AT-2, AT-3 or AT-4 with ________ GPM (continuous draw) 40°- 140°F rise
with 200°F boiler water temperature.
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 in addition to high limit control and shall be 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.
The low water cut-off shall be McDonnell & Miller No. (a) or (b) options below:
Options (a) for Water Boilers
No. 750P-MT, manual reset
No. 64, automatic reset
No. 63M, manual reset
Options (b) for Steam Boilers
No. 67BC-2, automatic reset
No. 64, automatic reset
No. 63M, manual reset
No. 47-2 feeder and cut-off combination, automatic reset, No. 47-2M (manual reset)
No. 51-2 feeder and cut-off combination, automatic reset, No. 51-2M (manual reset)
No. 150 pump control and cut-off, automatic reset, No. 150-M (manual reset)
4. GAS TRAINS AND IGNITION SYSTEMS
* 4.1 (insert for 6 thru 14 section boilers) The boiler gas train shall be AGA certified and shall consist of
(select option a, b, c, d, e, f, or g)
* 4.1 (insert for 15 thru 26 section boilers) The boiler shall be furnished with two gas trains. Each gas
train shall be AGA certified and shall consist of (select option a, b, c, d, e, f, or g)
Option (a)
(Standard on 5006 thru 5009 with EI ignition, N/A on other sizes)
a 24 volt redundant combination gas valve with 100% shut-off and 1/8” NPT pressure tapping.
Option (b)
(Standard on 5010 thru 5026 with EI ignition)
a manual shut-off valve, pilot gas filter, pilot shut-off cock, gas pressure regulator, and two diaphragm
gas valves.
Option (c)
a manual shut-off valve, pilot gas filter, pilot shut-off cock, gas pressure regulator, solenoid gas valve,
and motorized gas valve with low-high-off operation.
Option (d)
a manual shut-off valve, pilot gas filter, pilot shut-off cock, gas pressure regulator, solenoid gas valve,
and motorized gas valve with low-high-low operation.
Option (e)
a manual shut-off valve, pilot gas filter, pilot shut-off cock, solenoid gas valve, and a two stage