Determine boiler location – Lochinvar 1 User Manual
Page 9

Installation & Operation Manual
9
1
Determine boiler location
(continued)
Provide air openings to room:
The SYNC alone in boiler room
1. No air ventilation openings into the boiler room are
needed when clearances around the SYNC are at least 
equal to the SERVICE clearances shown in FIG.’s 1-1 
and 1-2. For spaces that do NOT supply this clearance, 
provide two openings as shown in FIG. 1-1. Each 
opening must provide one square inch free area per 1,000 
Btu/hr of boiler input.
2. Combustion air openings are required when using the
Room Air Option on page 27 of this manual.
The SYNC in same space with other gas or oil-fired 
appliances
1. Follow the National Fuel Gas Code (U.S.) or CSA B149.1
(Canada) to size/verify size of the combustion/ventilation 
air openings into the space.
The space must be provided with 
combustion/ventilation air openings 
correctly sized for all other appliances 
located in the same space as the SYNC.
Do not install the boiler in an attic.
Failure to comply with the above warnings 
could result in severe personal injury, 
death, or substantial property damage.
2. Size openings only on the basis of the other appliances in
the space. No additional air opening free area is needed 
for the SYNC because it takes its combustion air from 
outside (direct vent installation).
Do not install the boiler on carpeting even 
if foundation is used. Fire can result, 
causing severe personal injury, death, or 
substantial property damage.
If flooding is possible, elevate the boiler sufficiently to prevent 
water from reaching the boiler.
Flooring and foundation
Flooring
The SYNC is approved for installation on combustible 
flooring, but must never be installed on carpeting.
Vent and air piping
The SYNC requires a special vent system, designed for 
pressurized venting. 
The boiler is to be used for either direct vent installation or 
for installation using indoor combustion air. When room air 
is considered, see Section 4, Vertical Direct Venting. Note 
prevention of combustion air contamination below when 
considering vent/air termination.
Vent and air must terminate near one another and may be 
vented vertically through the roof or out a side wall, unless 
otherwise specified. You may use any of the vent/air piping 
methods covered in this manual. Do not attempt to install 
the SYNC using any other means.
Be sure to locate the boiler such that the vent and air piping 
can be routed through the building and properly terminated. 
The vent/air piping lengths, routing and termination method 
must all comply with the methods and limits given in this 
manual.
Prevent combustion air contamination
Install air inlet piping for the SYNC as described in this 
manual. Do not terminate vent/air in locations that can allow 
contamination of combustion air. Refer to Table 1A, page 
10 for products and areas which may cause contaminated 
combustion air.
Ensure that the combustion air will not 
contain any of the contaminants in Table 
1A, page 10. Contaminated combustion 
air will damage the boiler, resulting in 
possible severe personal injury, death 
or substantial property damage. Do not 
pipe combustion air near a swimming 
pool, for example. Also, avoid areas 
subject to exhaust fumes from laundry 
facilities. These areas will always contain 
contaminants.
ƽ WARNING
ƽ WARNING
ƽ WARNING
