Burnham ES2 manual Appendix D System Piping, Hot Water Boilers, Non-Condensing

APPENDIX D – System Piping (continued)

(2)Comply with the boiler’s specific water quality requirements. See the Specifications Section of this manual.

(3)Comply with the boiler’s specific requirements for minimum water flow through the boiler, installing a system bypass or primary-secondary loop if necessary to maintain flow through the boiler when serving small zones.

3.Overpressure

(1)Install a properly sized expansion tank.

(2)Do not exceed the boiler’s specific requirements for maximum allowable working pressure.

(3)Do not plug or block the relief valve.

4.Freezing

(1)Run all portions of the system piping inside a heated space unless the system is properly protected with an inhibited antifreeze solution.

5.Overheating

(1)Comply with the boiler’s specific requirement for minimum water flow through the boiler. See the

Specifications Section of this manual.

(2)Install a low-water cutoff device whenever the boiler is installed above the level of the lowest heat emitter

or radiator. Also add a low-water cutoff when required by local code requirements.

6.Thermal shock

(1)Do not over-pump. Adhere to the design flow requirements for each zone.

(2)Install a boiler bypass, system bypass, or primary-secondary loop when needed to avoid returning large volumes of cold water directly to a hot boiler.

7.Condensation

(1)Do not over-pump. Adhere to the design flow requirements for each zone.

(2)Adhere to the boiler’s specific minimum return water and supply water temperature requirements. Install a boiler bypass, system bypass, or primary-secondary loop when needed to maintain water temperatures and flows within the specified limits.

(3)Do not allow chilled water to enter the boiler during the heating cycle, or heated water to enter chilled water coils during the cooling cycle.

8.Dry Fire

Install a low-water cutoff when the boiler is installed above the level of the lowest radiator and when required by local code.

The following system diagrams are intended to provide a minimum level of guidance for a

i successful and trouble-free installation of the boiler in common applications. They do not substitute for proper design, evaluation, and installation by a trained and qualified installer using the proper tools, techniques, and design expertise. Not all options are available with every boiler.

Hot Water Boilers, Non-Condensing

			Two or more	Two or more	Two or
			zones of	zones of
		Indirect Tank?			more
			the same	different
					boilers?
			temperature?	temperatures?
	D-W1
	D-W2		
See	D-W3	Tankless Coil
Diagram	D-W4		
	D-W5			
	D-W6				

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