First Co HBXX (High Efficiency ECM) - Manual (Page 3)

****** WARNING ******
• Always wear eye protection.
• When fan coil is operating,
some components are operating
at high speeds. Personal injury
can result from touching these
items with any object
• All electrical and service
access panels must be returned
and secured in their proper
place.
• Clear surrounding area of all
tools, equipment and debris.
• Check the entire unit to
ensure it's cleanliness.
***** WARNING ******
The manufacturer does NOT
WARRANT equipment sub-
jected to abuse. Metal chips,
dust, drywall tape, paint over
spray, etc. can void warranties
and liability for equipment
failure, personal injury and
property damage.
replace the filter with the same type
as originally furnished.
Coil
Any dust or other contaminants
which accumulate on the heat trans-
fer surfaces interferes with the air flow
and impairs heat transfer. The coil
must be kept clean by any of the
following methods.
• Cleaning with low pressure com-
pressed air.
• Flushing or rinsing with water (a
detergent is advisable for greasy sur-
faces).
Drain Piping
The drain should always be:
• Connected or piped to an accept-
able disposal point sloped away from
the unit at least 1/8" per foot
• Checked before summer operation
• Periodically checked during sum-
mer operation
Preventative Maintenance
To achieve maximum performance
and service life of each piece of equip-
ment a formal schedule of regular
maintenance should be established
and maintained.
GND GND
CIRCUIT 1
L1- L2
CIRCUIT 2
L3- L4
30-60MBX 15 & 20 KW
FIELD WIRING
FACTORY WIRING
CIRCUIT 1
L1- L2
CIRCUIT 2
L3- L4
48-60MBX 25KW
GND
GND
CIRCUIT 3
L5- L6 GND
FIELD WIRING
FACTORY WIRING
R
G
W1
W2
C
COOLING CONTROL
OUTDOOR UNIT
RED
GREEN
WHITE
WHITE
BROWN
R
G
W1
* W2
Y
FAN COIL
UNIT
24V REMOTE
THERMOSTAT
FIELD WIRING
FACTORY WIRING
24 VOLT
CLASS 2 WIRING
* W2 SECOND STAGE ELECTRIC HEAT 15KW THRU 25KW
Figure 1 Field Wiring Connections
Figure 2 Low Voltage Wiring