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Page 17
CBWMV SERIES
System Adjustments
Timed−ON and Timed−OFF Delays
The 45−second timed−ON delay and the 30−second timed−
OFF delay for heating (time that the blower operates after
the heat demand has been satisfied) is not adjustable.
Blower Speeds
Select the blower speed by moving the pins on the variable
speed control board. See figure 14.
Refer to the speed selection chart on unit wiring diagram.
NOTE − To check for proper CFM, take the reading exter-
nal to the unit. The coil must be dry when you take the
reading.
Annual Service
WARNING
Electric shock hazard. Can cause inju-
ry or death. Before attempting to per-
form any service or maintenance, turn
the electrical power to unit OFF at dis-
connect switch(es). Unit may have
multiple power supplies.
At the beginning of each heating season, system should be
checked as follows by a qualified service technician:
Electrical
1. Check all wiring for loose connections.
2. Check for correct voltage at CBWMV unit (unit operat-
ing).
3. Check to see that blower is operating.
Blower
1. Check and clean blower wheel.
2. Motors are pre−lubricated for extended life; no further
lubrication is required.
Freezestat
Verify that the freezestat functions.
Service Filters
Filters must be cleaned or replaced when dirty to assure
proper unit operation.
Winterizing CBWMV Water Coil
If unit is installed in an unconditioned space, the piping be-
tween the CBWMV unit and the water heating device
should be insulated. If power is removed from the unit, wa-
ter must be drained from the system to prevent freezing.
Repair Parts List
The following repair parts are available. When ordering
parts, include the complete unit model number listed on the
unit rating plate of each piece of equipment.
Cabinet Parts
S
Blower Access Panel
S Coil Access Panel
Hot Water Coil Parts
S
Coil Replacement Kit
Blower Part
S
Blower Wheel
S Blower Motor
S Blower Housing
Electrical Parts
S
BDC3 Board
S Transformer
S Circuit Breaker, 24VAC
S 3PDT Relay