Domestic gas-fired forced convection air heaters for space heating not exceeding a net heat input of 70 kW, without a fan to assist transportation of combustion air and/or combustion products— 100 стр.
Specification for installation of gas-fired forced convection air heaters for commercial and industrial space heating (2nd and 3rd family gases)— 42 стр.
Specification for installation of gas-fired forced convection air heaters for commercial and industrial space heating (2nd and 3rd family gases)— 36 стр.