MPO-IQ Installation, Operating, and Service Instructions

37
Boiler Model No.
Boiler Flue Outlet
Collar OD (Inch)
Vent Hood
Inner Pipe
Diameter (Inch)
Flex Oil Vent Pipe
Inner Pipe Diameter
(Inch)
* Flue Outlet Collar to
Vent Pipe Adapter (Inch)
MPO-IQ147
6 5 6 to 5
MPO-IQ189
MPO-IQ231 7 6 7 to 6
NOTE: * The model specic Direct Vent (FDVS) Kit Cartons contain adapters (reducers) (see Table 6) to connect boiler ue outlet
collar to vent pipe.
TABLE 6: FLEX VENT / VENT TERMINATION PIPE DIAMETERS
E. CONNECTING APPLIANCE ADAPTER TO
BOILER FLUE OUTLET COLLAR
(See Figure 23)
1. Apply a bead of supplied high temperature
sealant to boiler ue outlet collar approximately
1" from collar end.
2. Remove any oil and grease from inside of
supplied Appliance (Boiler Flue Outlet)
Adapter, and, apply a bead of high temperature
sealant to inside of the adapter, ½" from end.
3. With twisting motion, assemble the appliance
adapter onto boiler ue outlet collar.
4. Using a mallet and a block of wood, carefully
tap the adapter onto the outlet collar. Insure
no damage is done to the adapter and the ue
outlet collar.
5. Assemble supplied adapter clamp halves with
5/16-18 bolts and square nuts; install the adapter
clamp onto the appliance adapter and tighten
securely.
6. If required, install anchoring screws (installer
provided) thru four holes in the clamp into the
ue outlet collar.
Figure 23: Appliance Adapter Installation
7. Apply sealant around the adapter end mated to the ue
outlet collar.
8. Install supplied 3/8” sampling port plug screw hand tight
into the adapter sampling port.
9. After initial boiler start-up and burner testing/
adjustment are completed, apply high temperature
sealant under the head of sampling port plug screw, and,
install the screw in the sampling port tightening securely.
Figure 24: Vent Pipe Assembly to Vent Termination
Inner Pipe and Appliance Adapter
VI. DIRECT VENTING / AIR INTAKE PIPING (continued)