York DH 300 - Manual (Page 36)

262260-YTG-E-1008
36 Johnson Controls Unitary Products
NOTE: ELEC / ELEC Models: Units and ductwork are
approved for zero clearance to combustible material
when equipped with electric heaters.
GAS / ELEC Models: A 1” clearance must be
provided between any combustible material and the
supply air ductwork for a distance of 3 feet from the
unit.
The products of combustion must not be allowed to
accumulate within a confined space and recirculate.
Locate unit so that the vent air outlet hood is at least:
• Three (3) feet above any force air inlet located
within 10 horizontal feet (excluding those integral to
the unit).
• Four (4) feet below, four horizontal feet from, or one
foot above any door or gravity air inlet into the
building.
• Four (4) feet from electric and gas meters,
regulators and relief equipment.
FIGURE 6 - UNIT DIMENSIONS DH180, 210, 240 & 300 (RAINHOOD)
TABLE 31: MINIMUM CLEARANCES
LOCATION CLEARANCE
Front 36”
Rear
24” (Less Economizer)
49” (With Economizer)
Left Side (Filter Access)
24” (Less Economizer)
36” (With Economizer) 3
Right Side (Cond. Coil) 36”
Below Unit 1
1. Units may be installed on combustible floors made from wood or
class A, B, or C roof covering material.
0”
Above Unit 2
2. Units must be installed outdoors. Overhanging structures or
shrubs should not obstruct condenser air discharge outlet.
3. If economizer is factory installed, the unassembled rain hood
must be removed from its ride along position in front of evapora-
tor coil, or in the outdoor air compartment, prior to final installa-
tion.
72” With 36” Maximum
Horizontal Overhang (For
Condenser Air Discharge)
REAR VIEW
DETAIL “Y”
UNIT WITH RAIN HOODS
LH VIEW
28-3/16” 92”
36-5/8”
5”
16-1/8”
SUPPLY AIR
COMPARTMENT POWER EXHAUST
RAIN HOOD
(on Return Air Compartment)
ECONOMIZER
MOTORIZED
DAMPER
RAIN HOOD
(on Outdoor Air Compartment)
ECONOMIZER / MOTORIZED DAMPER
AND POWER EXHAUST RAIN HOODS
FIXED
OUTDOOR AIR
INTAKE HOOD
(located on
Return Air
Compartment)
1“ CONDENSATE
DRAIN
(Must be trapped)