Daikin CHPE Series, Руководство по установке

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11.3 SAFETY DEVICE
Every installation must include an NEC (USA) or CEC (Canada) ap-
proved overcurrent protection device. Also, check with local or
state codes for any special regional requirements. Protection can
be in the form of fusing or HACR style circuit breakers. The Series
and Rating Plate provides the maximum overcurrent device per-
missible. When using residual current operated circuit breakers,
be sure to use a high-speed type (0.1 second or less) 30mA rated
residual operating current.
NOTE : Fuses or circuit breakers are to be sized larger than the
equipment MCA but not to exceed the MOP.
11.4 TRANSFORMER INSTALLATION
Measure the power supply to the gas furnace or modular blower.
Selection of correct supply voltage for transformer depends on
measured power supply to gas furnace or modular blower. The
supply voltage must be measured and be in agreement with the
equipment’s unit nameplate power requirements and within the
range shown. 24 VAC power voltage is supplied to EEV cased coil
control board from transformer supply terminals. See Figure 15
For appropriate wiring identification and installation for the cased
coil, refer to the proveid wiring schematic located on the PCB Con-
trol Panel cover.
EEV Cased Coil 24 VAC
supply voltage
Select single appropriate
power supply
Connect COM to
field common.
Figure 15
The cased coil PCB must be supplied 24 VAC supply voltage from
an appropriately powered transformer. A transformer has been
included in the transformer kit with the cased coil.
This unit is designed to operate on 24 VAC from provided
transformer. NEVER connect high voltage (120/208/240 VAC)
to the cased coil directly or to the cased coil control board.
Doing so would result in equipment damage and/or personal
injury or death.
Use designated UL certified transformer included with coil
accessory kit. Do not alter or modify the transformer.
Attempting to modify or alter the transformer may result in
product damage or personal injury.
11.5 HOW TO INSTALL THE TRANSFORMER
Furnace application requires the use of the multi-tap (120/204/
240) VAC to 24 VAC transformer. Appropriate supply voltage for
multi-tap transformer is based on field wiring. Select from the coil
accessory kit the following components:
1. Multi-tap (120/208/240) VAC to 24 VAC transformer.
2. Appropriate PCB transformer bracket (see Table 1).
3. Supplied red/black voltage transformer power wires.
NOTE: Based on furnace selection, use the following table to de-
termine appropriate PCB transformer bracket.
Bracket A Bracket B No Bracket
DM80* All
X
DM96* All
X
DM97* All
X
Gas DC80* All
X
Furnace DC96*
X
DC97*
X
DC96* 21.0"
X
DC97* 24.5"
X
Modular
Blower
MBVC* All X
Bracket Select
Mode
Name
Cabinet
Width
17.5"
Table 1
Bracket “A”
Bracket “B”
Figure 16
NOTE: Based on furnace or modular blower model, the applicable
bracket and PCB transformer are mounted inside the furnace or
modular blower cabinet. It is recommended to use self tapping
screws to secure the PCB transformer and bracket plate to the
mounting position. See Figures 17 through 23 to determine ap-
propriate location.