Reznor EWHB Unit Installation Manual - Manual (Page 4)

EWHB Series Industrial / Commercial Electric Unit Heater /Installation Instructions, Page 2 of 4 23-2180-83-5REZ
INSTALLATION INSTRUCTIONS
– Continued
B. Mechanical Installation:
These heaters are to be mounted for horizontal discharge
only. Mounting is to be accomplished by using either (4)
3/8x16 threaded rods (supplied by others) or the stainless
steel swivel mounting bracket factory supplied with the
heater. Lock washers should be used on all mounting nuts
and bolts to ensure they don’t vibrate or work loose due
to fan vibration or other vibration transmitted to the
heater.
The supporting structure that the heater is attached to
must have adequate strength to safely support the heater.
The heater dimensions and maximum unit weights are:
TABLE 1:
KW
Cabinet
Size
X Y Z Weight
<= 12 1
15.50”
(394mm)
21.50”
(546mm)
13.00”
(330mm)
56 lbs
(25 kg)
12.1 to 47 2
26.00”
(660mm)
28.00”
(711mm)
20.00”
(508mm)
115 lbs
(52 kg)
Select a location for installation such that the outlet air is
not directed at an adjacent wall. Louvered grills can be
installed to deflect the discharge air up, down or sideways.
TABLE 2:
KW
Cabinet
Size
Air Volume
Air
Throw
Outlet
Velocity
<= 7.5 1
700 CFM
(1189 cubic m/hr)
26 Ft
(8 m)
760 FPM
(232 m/min)
7.6 to 12 1
1450 CFM
(2463 cubic m/hr)
43 Ft
(13 m)
1575 FPM
(481 m/min)
12.1 to 47 2
2400 CFM
(4077 cubic m/hr)
50 Ft
(15 m)
1200 FPM
(366 m/min)
Once an acceptable location has been determined, see the
following instructions to complete the mechanical
installation:
1. To ensure proper heating of floor surfaces, observe
the following recommended mounting height
limitations (to bottom of heater):
TABLE 3: Max. Mounting Height from Floor, feet (m)
<= 5 KW 5.1 to 10
KW
10.1 to 20
KW
20.1 to 47
KW
10’ (3m) 15’ (4.6m) 20’ (6.1m) 25‘ (7.6m)
2. Install the heater at least 6 feet (1.8m) from the floor
and 8” (203mm) from the wall or ceiling.
3. Mount heater using one of the following two options:
Standard ceiling or wall mount using the swivel bracket:
MOUNTING HOLE DETAIL-
REAR VIEW OF BRACKETS
FIGURE A
(1-12KW)
FIGURE B
(12.5-47KW)
(See Table 4 on next page for tabulated dimensions)