Roberts Gorden CTHN-125, CTHN-200, CTHN-100, CTHN-40, CTHN-80 Multiburner System Design Requirements

SECTION 9: MULTIBURNER HEATER INSTALLATION

9.2 Multiburner System Design Requirements

A CTHN multiburner system has a number of radiant tube sections interconnected by manifold tube to a pump to form a complete system. Reflectors can be used over the manifold tube but are not required. The system design parameters are such that the manifold sections are not subjected to condensate when the system is fully heated up. It is required that heat-treated aluminized or coated tubing is used for the manifold to increase system life and to handle initial condensation during start-up. Damper couplings may be necessary to balance system vacuum.

Design requirements for a CTHN multiburner system are summarized on Page 30, Table 10.

CTHN multiburner heaters are typically shipped as burner packages and tube and accessory packages. The tube and accessory packages contain enough tube, reflector and hanging parts for the radiant section of one CTHN heater. Elbows, tees, manifold tube, pumps, controls, damper couplings and any other parts used beyond the burner, radiant tube and reflector must be purchased separately. See Figure 18 for a general overview of a simple CTHN multiburner system. Depending on system requirements, CTHN multiburner systems may be controlled by either a ROBERTS GORDON® System Control (shown) or by a relay system.

FIGURE 18: Typical CTHN Multiburner System Installation

		Zone 1 Thermostat
		T
System Control (optional)
	Turbulator (if required)
Pressure Switch	Cross	Optional Reflector
		Tee
Pump
Exhaust to		Manifold Tube
Outside
	Radiant Tube
	Burners
		T
		Zone 2 Thermostat
Drawing Not to Scale
		29