Current through August, 2024
(a) Individual
modules. The following shall apply to individual modules:
(1) The individual modules shall comply with
all the requirements of the code of construction. The individual modules shall
be limited to a maximum input of 400,000 Btu per hour (117 kw/hr) for gas, 3
gallons/hour (11.41/hr) for oil, or 117 kw for electricity;
(2) Each module of a modular steam heating
boiler shall be equipped with a:
(A) Safety
valve, see section 12-223.1-9(a) (1);
(B) Blowoff valve, see section
12-223.1-13(o)(1); and
(C) Drain
valve, see section 12-223.1-13(o)(2); and
(3) Each module of a modular hot-water
heating boiler shall be equipped with a:
(A)
Safety relief valve, see section 12-223.l-9(a) (2); and
(B) Drain valve, see section 12-223.1-13(o)
(2).
(b)
Assembled Modular Heating boilers. The following shall apply to assembled
modular heating boilers:
(1) The individual
modules shall be manifolded together at the job site without any intervening
valves;
(2) The assembled modular
steam heating boiler shall also be equipped with a:
(A) Feedwater connection, see Exhibit 5 and
6; and
(B) Return pipe connection,
see Exhibit 5 and 6; and
(3) The assembled modular hot-water boiler
shall also be equipped with a:
(A) Makeup
water connection, see Exhibit 7;
(B) Provision for thermal expansion, see
Exhibit 7 and Exhibit 8; and
(C)
Stop valves, see Exhibit 7 (treating the assembled modular boiler as a single
unit).
(c)
Modular hot-water heating boilers. The following shall apply to modular
hot-water heating boilers:
(1) Each module of
a modular hot-water heating boiler shall be equipped with a:
(A) Pressure or altitude gage, see section
12-223.1-7(b)(1);
(B) Thermometer,
see section 12-223.1-7(b)(2); and
(C) Temperature control, see section
12-223.1-7(b)(3)(A); and
(2) The assembled modular hot-water heating
boiler shall be equipped with a:
(A)
Temperature control, see 12-223.1-7(b)(3)(B); and
(B) Low-water fuel cutoff, see 12-223.1-7(b)
(4).
(d)
Modular steam heating boilers. The following shall apply to modular steam
heating boilers:
(1) Each module of a modular
steam boiler shall be equipped with a:
(A)
Steam gage, see section 12-223.1-7(a) (1);
(B) Water-gage glass, see section
12-223.1-7(a) (2);
(C) Pressure
control, see section 12-223.1-7(a)(4)(A); and
(D) Low-water cutoff, see section
12-223.1-7(a)(5); and
(2)
The assembled modular steam heating boiler shall also be equipped with a
pressure control, see 1 section 12-223.1-7 (a) (4) (B)).
(e) Modular water heaters. The individual
modules shall comply with all the requirements of the code of construction and
this paragraph. Each module of a modular water heater shall be equipped with a:
(1) Safety relief valve, see section
12-223.1- 9(a) (3);
(2) Drain
valve, see section 12-223.1- 13(o) (2);
(3) Pressure or altitude gage, see section
12-223.1-7(c) (2);
(4) Thermometer,
see section 12-223.1-7(c) ( 3);
(5)
Temperature control, see section 12-223.1-7(c)(1); and
(6) Flow-sensing Device, see section
12-223.1-7(c) (4).
(f)
Assembled modular water heaters having an aggregate input value greater than
200,000 Btu per hour or aggregate water containing capacity greater than 120
gallons. The individual modules shall be manifolded together at the job site
with or without any intervening valves. The assembled modular potable water
heater shall be equipped with a:
(1) Safety
relief valve, see section 12-223.1-9(a) (3);
(2) Drain valve, see section 12-223.1-13 (o)
(2);
(3) Pressure/altitude gage, see
12-223.1-7(c) (2);
(4) Thermometer,
see section 12-223.1-7(c)(3);
(5)
Temperature control, see section 12-223.1-7(c)(1); and
(6) Flow-sensing device, see
12-223.1-7(c)(4).
