CCI Thermal Technologies HP - High Pressure Heat Exchanger Unit Heater - Manual (Page 4)

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5. When arranging heaters, check the fan throws for the heaters being mounted (see table below). Although it is not
generally required that the fan throws reach the next heater, air circulation must be sufficient to prevent cold spots
from occurring.
6. Do not install heaters such that airflow is blocked or impeded by equipment or walls.
7. For warehouses or large workshops, it may be acceptable to use fewer, but larger, heaters mounted well above floor
level. It has to be recognized, however, that only the largest heaters have long fan throw distanced.
FAN THROWS FOR RUFFNECK TM HEAT-EXCHANGER UNIT AIR HEATERS
MODEL
FR/HP - 12
FR/HP - 16
FR/HP - 20
FR/HP - 24
FR/HP - 30
FR/HP - 36
MOTOR HP
1/2
1/2
1/2
1/2
3/4
1 1/2
RPM
1725
1725
1725
1725
1140
1725
THROW IN FEET
40
60
65
70
70
60
NOISE LEVELS
Where personnel inhabit a room or building for long periods of time, and local ambient noise levels are low, the noise from
the heaters has to be considered. Typically, the smaller the heater the lower the noise level will be. The largest heaters
that move large volumes of air are noticeably noisier than units handling low volumes of air.
MEASURED SOUND LEVELS OF RUFFNECK TM HEAT-EXCHANGER AIR UNIT HEATERS
MODEL
FR/HP - 12
FR/HP - 16
FR/HP - 20
FR/HP - 24
FR/HP - 30
FR/HP - 36
REAR
61
70
66
74
74
76
FRONT
61
70
66
74
74
76
SOUND LEVEL dBA
Note:
Sound levels were measured at a distance of 15 feet with louver blades horizontal and sound
meters on centre line of heater (i.e., in line with motor/fan shaft).
MOUNTING
Although Ruffneck™ Unit Heaters are designed to be installed in an upright and level position, they may be installed
in other positions. However, for steam service the inlet must be above the outlet and the bottom of the core must drain
toward the outlet. They are designed to be suspended from the top of the cabinet either with two or four (depending on
model) 5/8” NC bolts screwed into internally threaded holes provided in the cabinet top panel. It is essential that adequate
structural support be provided for installation.
Basic Mounting Kits (BMK), Hanging Mounting Kits (HMK), Swivel Hanging Mounting Kits (SHMK) or Wall Mounting Kits
(WMK) are available for Ruffneck™ heaters. If the strength of the structure is not adequate to support the units, a suitable
alternative such as the Ruffneck™ Pipe Mounting Kit (PMK) would be recommended to ensure safe and proper operation.
The HMK is the only suitable mounting kit for the 30” and 36” heater models.