Install Instructions

Fig. A

MODEL FK-42 FLOOR KIT

CUT OUT ARRANGEMENT

PARALLEL TO JOISTS

2. On parallel mounted units, locate main cabinet central to opening with small end ﬂ ush with

opening and against joists. Top of cabinet to be ﬂ ush with top of joists only. Fasten with

wood screws to joists on each end. (See Fig. D)

3. On perpendicular mounted units (FK-42 only) locate small end of main cabinet ﬂ ush with far

end of opening and ﬂ ush with top of joists. Secure cabinet sides to joists with wood

screws. (See Fig E)

TWIN-FLO III HEATER

1. Temporarily place and locate the Twin-Flo III on studs provided on bottom plate. This

procedure locates rectangular opening for piping. Soldering elbows on inlet and outlet of

element must not extend beyond edge of bottom plate. Remove unit and proceed with

piping as described in Beacon-Morris Twin-Flo III Heater Installation Instructions. (See Fig G)

2. Remove (3) screws form electric connector box and remove cover.

3. Secure unit to bottom plate through the (4) resilient mounting feet, (2) are located beneath

the electrical connector box. Torque nuts so that unit will not move or vibrate.

4. Loosen the (2) screws at the outlet end of the element cover.

5. Insert discharge duct into outlet end, side ﬂ anges to be inside element covers and top

ﬂ anges to be outside element covers. Slide duct as far as it will go.

6. Tighten the (2) screws and replace electrical connector box cover and secure with (3)

screws.

7. Locate neoprene gasket on electrical connector box cover approximately 5" from blower

end.

8. Insert deﬂ ector into slots on intake end of blower housing. Deﬂ ector to be ﬂ ush with side of

electrical connector box and resting solidly on gasket.

9. Remove desired knockouts in electrical connector box and bottom panel.

FINAL ASSEMBLY

1. Take the assembled heater and bottom panel and insert offset end of panel inside small

end of main cabinet, swing opposite end upward until bottom panel is seated against

bottom of cabinet. Studs in bottom of cabinet will protrude far enough below panel to

enable securing with washer and wing nut.

2. Make ﬁ nal piping and electrical connections following the instructions outlined in the

Beacon-Morris Twin-Flo III Heater Installation Instruction manual.

3. Slip grill assembly into ﬂ oor. (See Fig. G)

4. See Fig H for replacement parts list.