Product Overview

ManualsBrandsBurnham ManualsBoilersMPO-IQ189B Series, 145,000 BTU Output, Energy Star Rated Oil Fired High Efficiency 3-Pass Boiler

103859-12 - 8/19

MPO-IQ

Installation & Service Manual

f. Not less than 1 ft from the nearest surface of the

terminal to a roof soffit.

g. Not directly above, or, not less than 5 ft horizontally

from an oil tank vent.

h. Not less than 2 ft from nearest surface of terminal

to an adjacent building.

B. INSTALLATION OF THE VENT HOOD TERMINAL

1. Inspect Direct Vent Conversion Kit Carton for

damage. DO NOT install if any damage is evident.

2. Direct Vent Conversion Kit Carton includes (see

Figures 18, 19 and 20):

• Direct Vent Hood Assembly (consists of Vent

Hood Body and Vent Hood Tee) – 1 pc

• Backing Plate – 1 pc

• Vacuum Relief Valve VRV-4 – 1 pc

• Hardware Bag (includes high temperature

sealant, fasteners and inner pipe clamps) – 1 pc

• Appliance (Boiler Flue Outlet) Adapter – 1 pc

• Appliance Clamp Halves – 2 pcs

• Cover Sleeve Assemblies – 2 pcs

• Cover Ring Assemblies – 2 pcs

3. Remove vent system components from carton and

set aside.

4. Separate the vent hood tee from the vent hood body

and set aside for later use.

5. After determining the location of the venting system

termination, cut the square hole in the wall sized

according to “L” dimension in Table 5, see Figure

17.

6. Wood or vinyl siding should be cut, so that vent

hood base plate mounts directly on the wallboard to

provide stable support. If siding thickness exceeds

½”, use a spacer bar or board behind the vent hood

mounting (base) plate. See Figure 18.

a. Seal the backside of the vent hood base plate

around the outer pipe of the vent hood with a bead

of high-temperature silicone sealant (provided

in Bagged Hardware).

b. Mount the vent hood body from outside, through

the wall, keeping the outer pipe centered in the

hole.

c. Fasten the vent hood body to the outside wall

with appropriate fasteners (installer provided).

d. Seal the edges of the vent hood base plate to

the wall with a high-temperature silicone sealant

(provided in Bagged Hardware).

e. While inside, position the backing plate over

the outer pipe and fasten to inside wall with

appropriate fasteners (installer provided).

Figure 17: Wall Cutout Dimensions

Boiler Model No.

Direct Vent

Conversion Kit

Part No.

"L" Dimension

(Inch)

MPO-IQ147B

MPO-IQ189B

102130-02 8¼

MPO-IQ231B 102130-03 9¼

Table 5: Wall Cutout Dimensions

Figure 18: Vent Hood Body Installation

5 Direct Venting / Air Intake Piping (continued)