New Yorker AP-U SERIES Installation, Operating And Service Instructions page 8

INSTALLATION INSTRUCTIONS FOR OPTIONAL SHIELD REQUIRED
This shield for combustible floors is intended for use only with the following New Yorker oil-fired boilers:
1) Place shield on combustible floor with "TOP" surface
upward and "FRONT" surface directly below the
expected position of the oil burner.
2) Locate shield such that clearances to combustible walls
are as indicated in Figure 3. These dimensions will
assure that the boiler jacket will be at least 18" from
the side and rear walls and 48" from the front wall, as
required by ANSI/NFPA 31.
3) Fasten shield to combustible floor to keep shield from
shifting position during setting of boiler.
8
FOR COMBUSTIBLE FLOOR
Use Part Number 6183504 for the following models:
AP-490U AP-590U
ADDS 4-3/16" TO BOILER HEIGHT
Figure 3: Floor Shield
AP-690U AP-790U
4) Set boiler squarely on top of shield such that base plate
of boiler rests flat on top surface of shield and does not
over-hang shield on any side. Confirm clearance to
combustible walls. Refer to Figure 2.
5) Do not enclose boiler (including shield) on all four
sides. Boiler may be enclosed on any three sides while
maintaining minimum clearances shown in Figure 2 for
each of those three sides.