ECR Dunkirk 4 Series, Installation, Operation & Maintenance Manual

9

Table 4   - 

Required Clearances

Unit

Combustible 

Clearance

Accessibility, 

Cleaning, and 

Servicing 

Top

1”  (26mm)

8” (204mm)

Left Side

1 “ (26mm)

-

Right Side

11” (280mm)

-

Base

1”  (26mm)

-

Front

1”  (26mm)

24” (610mm)

Back

1”  (26mm)

-

Intake/Vent Piping

0  (0)

-

All distances measured from the cabinet of the boiler.

Locating The Boiler

1. 

Place crated boiler as close to selected location as 

possible and un-crate boiler. Boiler may be moved into 

position with appliance dolly or 2 wheel hand truck. 

Insert dolly or hand truck under left hand side of 

boiler. It is possible to slide boiler for short distance on 

smooth 

fl

 oor or surface.

2. 

Select level location central to piping systems served 

and as close to vent and air intake terminals as 

possible.

3. 

Accessibility clearances, if more stringent (i.e. larger 

clearances) than required 

fi

 re protection clearances, 

must be used for boiler installation. Accessibility 

clearances may be achieved with the use of removable 

walls or partitions.

4. 

Boiler is approved for installation in closets and on 

combustible 

fl

 oors. This boiler shall NOT be installed on 

carpeting.

5. 

Clearances shown in  Table 4 

indicate required 

clearances. Maintain minimum 1” clearance between 

combustible construction and each of left, top and 

back surfaces of the boiler. Minimum 11” clearance is 

required on right side, to allow room for induced draft 

blower. Allow 24” at front and 8” at top for servicing. 

No clearances are required to venting or combustion air 

intake piping.

6. 

Install equipment in location which facilitates operation 

of venting and combustion air intake piping systems 

as described in this manual. Draft inducer (blower) 

may be rotated 90° or 180° to orient vent connections 

towards right side or rear. Remove blower mounting 

screws. Orient blower and install mounting screws. Do 

not overtighten screws.

7. 

Advise owner to keep venting and combustion air 

intake passages free of obstructions. Both venting 

and combustion air intake piping systems connected 

to outdoors must permit 

fl

 ow through piping systems 

without restrictions for boiler operation.

8. 

Install boiler such that the automatic gas ignition 

system components are protected from water 

(dripping, spraying, rain, etc.) during operation and 

service (circulator replacement, condensate trap, 

control replacement, etc.).

9. 

Keep boiler area clean of debris and free of 

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 ammable 

and combustible materials, vapors and liquids.

10. 

Locate boiler where minimum possible room 

temperature where boiler is installed, assuming boiler 

is not in operation and therefore contributes no heat 

to space, is always at or above 32°F (0°C) to prevent 

freezing of liquid condensate.

Combustion Air And Vent Pipe Requirements

This boiler requires a dedicated direct vent system. In a 

direct vent system, all air for combustion is taken directly 

from outside atmosphere, and all 

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 ue products are 

discharged to outside atmosphere.
Terminate combustion air and vent pipe connections in 

same atmospheric pressure zone, through roof or sidewall 

(roof termination preferred). See  Figure 12  thru  Figure 14 , 

pages 24 and 25 for required clearances.

 WARNING

Solvent cements are combustible. Keep away from 

heat, sparks, and open 

fl

 ame. Use only in well 

ventilated areas. Avoid breathing in vapor or allowing 

contact with skin or eyes. Failure to follow these 

instructions could result in 

fi

 re, serious injury, or death.

!

• Combustion air must be clean outdoor air. Combustion 

air must not be taken from inside structure because 

that air frequently is contaminated by halogens, which 

include 

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 uorides, chlorides, phosphates, bromides 

and iodides. These elements are found in aerosols, 

detergents, bleaches, cleaning solvents, salts, air 

fresheners, paints, adhesives and other household 

products.

• Locate combustion air inlet as far away as possible 

from swimming pool and swimming pool pump house.

• All combustion air and vent pipes must be airtight and 

watertight. Combustion air and vent piping must also 

terminate as shown in “Combustion Air and Vent 

Pipe” section.

• Vent connections serving appliances vented by 

natural draft shall not be connected into any portion 

of mechanical draft systems operating under positive 

pressure.

BOILER INSTALLATION