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Step 14 — Remove Supply-Fan Shipping
Brackets — Supply-fan shipping brackets (4 per unit) must
be removed from each corner of the fan sled before starting
unit.
UNIT SIZES 030-050
1. To remove brackets, raise fan sled by turning adjusting
bolt counterclockwise until spring is compressed slightly.
2. Remove screws holding shipping bracket to unit cross
rail.
3. Remove shipping bracket (top of bracket is slotted so that
it will slide out).
4. After removing all shipping brackets, level fan sled using
the adjusting screws. On all 4 corners, dimension from
cross rail to fan sled should be as shown in Fig. 49.
UNIT SIZES 055-070 — To remove shipping brackets, re-
move the 6 screws holding each bracket to the cross rail. There
are 8 brackets per unit. See Fig. 50.
After removing all shipping brackets, level fan sled using
the adjusting screws. On all 4 corners dimension from cross
rail to fan sled should be as shown in Fig. 50.
UNIT SIZES 075-100 — To remove shipping brackets, re-
move the 6 screws holding each bracket to the cross rail. There
are 4 brackets per unit. See Fig. 51.
After removing all shipping brackets, level fan sled using
the adjusting screws. On all 4 corners dimension from cross
rail to fan sled should be as shown in Fig. 51.
Step 15 — Remove Optional Return-Fan Ship-
ping Brackets —
Optional return fan shipping brackets
must be removed from each corner of the fan sled before start-
ing unit.
To remove shipping brackets, remove 2 screws holding
each bracket to the cross rail. There are 4 brackets per unit.
FS
BP
OACFM
TRANSDUCER
DP
RF
CFM
PP
SS
Fig. 48 — Auxiliary Control Box Details
(Size 075-100 Units with Optional Return Fan)
LEGEND
BP — Building Pressure
Transducer
OACFM — Outdoor Air Cfm
Sensor Transducer
DP — Duct Pressure
Transducer
PPSS — Plenum Pressure
Safety Switch
FS — Filter Switch RFCFM — Return Fan Cfm Sensor Transducer
Fig. 49 — Shipping Brackets; Size 030-050 Units
Fig. 50 — Shipping Brackets;
Size 055-070 Units