Daikin DC97MC, Руководство по установке

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30
W1 W2 Y2
Furnace Integrated
Control Module
Remote
Condensing Unit
(Two-Stage Cooling)
Dehumidistat
[Optional]
Y2
NEU
W1 W2 Y2
Field installed jumper
to enable cooling
ramping profile when
using a straight
cooling unit.
Thermostat - Two-Stage Heating with Two-Stage Cooling
Figure 34
S
ET
DIP
SWITCH
#14
TO
ON
POSITION WHEN USING A
2-
STAGE
COOLING THERMOSTAT
.
IMPORTANT NOTE (COOLING SETUP)
S
INGLE
-S
TAGE
H
EATING
T
HERMOSTAT
A
PPLICATION
A single-stage thermostat with only one heating stage may be
used to control this furnace.
To use a single-stage thermostat, turn off power to the fur-
nace, move the thermostat selection DIP switch to the OFF
position. Turn power back on. Refer to the DIP switch chart
in this manual.
24 V
OLT
D
EHUMIDISTAT
W
IRING
The optional usage of a dehumidistat allows the furnace’s
circulator blower to operate at a slightly lower speed (85% of
desired speed) during a combined thermostat call for cooling
and dehumidistat call for dehumidification. This can be done
through an independent dehumidistat or through a thermostat’s
DEHUM terminal (if available). This lower blower speed en-
hances dehumidification of the conditioned air as it passes
through the AC coil. For proper function, a dehumidistat ap-
plied to this furnace must operate on 24 VAC and utilize a
switch which
opens on humidity rise. Refer to the “Thermo-
stat Wiring Diagrams” figure for additional wiring details.
To install/connect a dehumidistat:
1. Turn OFF power to furnace.
2. Secure the dehumidistat neutral wire (typically the white
lead) to the terminal marked “DEHUM” on the furnace
integrated control module.
3. Secure the dehumidistat hot wire (typically the black lead)
to the terminal marked “R” on the furnace integrated
control module.
4. Secure the dehumidistat ground wire (typically the green
lead) to the ground screw on the furnace junction box.
NOTE: Ground wire may not be present on all
dehumidistats.
5. If the condenser is a straight cooling unit, install a
jumper from Y1 to 0 on the furnace board.
6. Turn ON power to furnace.
To enable the dehumidify function on the integrated control mod-
ule, set the dehumidification ENABLE DIP switch from OFF to
ON.
Once the switch is set, the dehumidify function is enabled during
a
combination call for cooling (T-Stat) and dehumidification
(DEHUM-Stat). Refer to the DIP switch chart in the back sec-
tion of this manual.
F
OSSIL
F
UEL
A
PPLICATIONS
This furnace can be used in conjunction with a heat pump in a
fossil fuel application. A fossil fuel application refers to a
combined gas furnace and heat pump installation which uses
an outdoor temperature sensor to determine the most cost
efficient means of heating (heat pump or gas furnace).
Strictly follow the wiring guidelines in the fossil fuel kit in-
stallation instructions. All furnace connections must be made
to the furnace control board and the “FURNACE” terminal
strip on the fossil fuel control board.
L
INE
V
OLTAGE
A
CCESSORIES
(E
LECTRONIC
A
IR
C
LEANER AND
H
UMIDIFIER
)
The furnace control board is equipped with line voltage ac-
cessory terminals for controlling power to an electronic air
cleaner.
HIGH VOLTAGE !
T
O AVOID PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK
,
DISCONNECT ELECTRICAL POWER
BEFORE SERVICING OR CHANGING ANY ELECTRICAL
WIRING
.
WARNING
The accessory load specifications are as follows. (The fur-
nace control board also has a set of dry contacts for hu-
midifier connection.)
Humidifier 1.0 Amp maximum at 120 VAC
Electronic Air Cleaner 1.0 Amp maximum at 120 VAC
Turn OFF power to the furnace before installing any accesso-
ries. Follow the humidifier or air cleaner manufacturers’ in-
structions for locating, mounting, grounding, and controlling these
accessories. Accessory wiring connections are to be made through
the 1/4" quick connect terminals provided on the furnace inte-
grated control module. The Electronic air cleaner hot terminal
is identified as EAC.
It is necessary to remove the protective
tab on the board cover to access the EAC Terminal. The EAC
neutral terminal is identified as NEUTRAL. A line voltage
humidifier may be connected between one of the HUM con-
tacts and NEUTRAL. The other HUM contact must be fed
from the L1 terminal.
All field wiring must conform to applicable codes. Connec-
tions should be made as shown in Figure 35.