Lochinvar 5 operation manual Optional room air

2 General venting

Optional room air

Applications utilizing the SYNC boiler may be installed with a single pipe carrying the flue products to the outside while using combustion air from the equipment room. In order to use the room air venting option the following conditions and considerations must be followed.

•The unit MUST be installed with the appropriate room air inlet cover (factory installed).

•The equipment room MUST be provided with properly sized openings to assure adequate combustion air. Please refer to instructions provided with the room air kit.

•There will be a noticeable increase in the noise level during normal operation from the inlet air opening.

•Using the room air configuration makes the unit vulnerable to combustion air contamination from within the building. Please review Section 1, Prevent Combustion Air Contamination, to ensure proper installation.

•Vent system and terminations must comply with the standard venting instructions set forth in this manual.

Installation & Operation Manual

Table 2B Room Air Minimum / Maximum Allowable Air / Vent Lengths

		Vent	Vent	Input
	Vent			De-Rate per
Model		Min.	Max.
	Diameter			25 feet of
		Length	Length
				Vent
SB 1000	6"	12’	100’	0.63%
SB 1300	6"	12’	100’	1.45%
SB 1500	6"	12’	100’	1.65%

Air contamination

Pool and laundry products and common household and hobby products often contain fluorine or chlorine compounds. When these chemicals pass through the boiler, they can form strong acids. The acid can eat through the boiler wall, causing serious damage and presenting a possible threat of flue gas spillage or boiler water leakage into the building.

Please read the information given in Table 1A, page 10, listing contaminants and areas likely to contain them. If

￿WARNING

When utilizing the single pipe method, provisions for combustion and ventilation air must be in accordance with Air for Combustion and Ventilation, of the latest

contaminating chemicals will be present near the location of the boiler combustion air inlet, have your installer pipe the boiler combustion air and vent to another location, per this manual.

edition of the National Fuel Gas Code, ANSI Z223.1, in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and Equipment, or applicable provisions of the local building codes.

￿WARNING

￿WARNING

If the boiler combustion air inlet is located in a laundry room or pool facility, for example, these areas will always contain hazardous contaminants.

To prevent the potential of severe personal injury or death, check for areas and products

Figure 2-5Room Air Installation

NOTICE FOR DIRECT VENT SYSTEMS

REMOVE AIR INLET COVER AND

INSTALL RUBBER COUPLING FOR

PVC / CPVC VENT SYSTEMS OR

STAINLESS STEEL ADAPTER FOR

STAINLESS STEEL VENT SYSTEMS

listed in Table 1A, page 10 before installing the boiler or air inlet piping.

If contaminants are found, you MUST:

•Remove contaminants permanently. —OR—

•Relocate air inlet and vent terminations to other areas.

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