C L I M AT E M A S T E R W AT E R - S O U R C E H E AT P U M P S
C o n s o l e s
R e v. : 5 N o v. , 2 0 0 9 B
34
C l i m a t e M a s t e r W a t e r- S o u r c e H e a t i n g a n d C o o l i n g S y s t e m s
DIP 2.1 DIP 2.2 DIP 2.3
ACC1 Relay Option
On
On
On
Cycle with fan
Off
On
On
Digital NSB
On
Off
On
Water Valve - slow opening
On
On
Off
OAD
Off
Off
Off
Reheat Option - Humidistat
Off
On
Off
Reheat Option - Dehumidistat
DIP 2.4 DIP 2.5 DIP 2.6
ACC2 Relay Option
On
On
On
Cycle with compressor
Off
On
On
Digital NSB
On
Off
On
Water Valve - slow opening
On
On
Off
OAD
All other DIP combinations are invalid
Table 7c: Accessory DIP Switch Settings
DXM Controls
cool mode, Y1 is the input call for cooling stage 1; Y2 is
the input call for cooling stage 2; W1 is the input call for
heating stage 1; and O/W2 is the input call for heating
stage 2. In heat pump mode, Y1 is the input call for
compressor stage 1; Y2 is the input call for compressor
stage 2; W1 is the input call for heating stage 3 or
emergency heat; and O/W2 is the input call for reversing
valve (heating or cooling, depending upon DIP 1.4).
On = Heat Pump. Off = Heat/Cool.
1.4 - Thermostat type (O/B): DIP 1.4 provides selection of
thermostat type for reversing valve activation. Heat pump
thermostats with “O” output (reversing valve energized
for cooling) or “B” output (reversing valve energized for
heating) can be selected with DIP 1.4.
On = HP stat with “O” output for cooling. Off = HP stat
with “B” output for heating.
1.5 - Dehumidifi cation mode: DIP 1.5 provides
selection of normal or dehumidifi cation fan mode. In
dehumidifi cation mode, the fan speed relay will remain
off during cooling stage 2. In normal mode, the fan speed
relay will turn on during cooling stage 2.
On = Normal fan mode. Off = Dehumidifi cation mode.
1.6 - DDC output at EH2: DIP 1.6 provides selection for
DDC operation. If set to “DDC Output at EH2,” the EH2
terminal will continuously output the last fault code of
the controller. If set to “EH2 normal,” EH2 will operate as
standard electric heat output.
On = EH2 Normal. Off = DDC Output at EH2.
1.7 - Boilerless operation: DIP 1.7 provides selection of
boilerless operation. In boilerless mode, the compressor
is only used for heating when FP1 is above the
temperature specifi ed by the setting of DIP 1.8. Below
DIP 1.8 setting, the compressor is not used and the
control goes into emergency heat mode, staging on EH1
and EH2 to provide heating.
On = normal. Off = Boilerless operation.
1.8 - Boilerless changeover temperature: DIP 1.8
provides selection of boilerless changeover temperature
set point. Note that the FP1 thermistor is sensing
refrigerant temperature between the coaxial heat
exchanger and the expansion device (TXV or cap tube).
Therefore, the 50°F [10°C] setting is not 50°F [10°C]
water, but approximately 60°F [16°C] EWT.
On = 50°F [10°C]. Off = 40°F [16°C].
DIP Package #2 (S2)
DIP Package #2 has 8 switches and provides the
following setup selections:
2.1 - Accessory1 relay personality: DIP 2.1 provides
selection of ACC1 relay personality (relay operation/
characteristics). See table 6c for description of functionality.
2.2 - Accessory1 relay personality: DIP 2.2 provides
selection of ACC 1 relay personality (relay operation/
characteristics). See table 6c for description of functionality.
2.3 - Accessory1 relay personality: DIP 2.3 provides
selection of ACC 1 relay options. See table 6c for
description of functionality.
2.4 - Accessory2 relay personality: DIP 2.4 provides
selection of ACC 2 relay personality (relay operation/
characteristics). See table 6c for description of functionality.
2.5 - Accessory2 relay personality: DIP 2.5 provides
selection of ACC 2 relay personality (relay operation/
characteristics). See table 6c for description of functionality.
2.6 - Accessory2 relay personality: DIP 2.6 provides
selection of ACC 2 relay options. See table 6c for
description of functionality.
2.7 - Auto dehumidifi cation fan mode or high fan mode: DIP
2.7 provides selection of auto dehumidifi cation fan mode
or high fan mode. In auto dehumidifi cation mode, the fan
speed relay will remain off during cooling stage 2 IF the H
input is active. In high fan mode, the fan enable and fan
speed relays will turn on when the H input is active.
On = Auto dehumidifi cation mode. Off = High fan mode.
2.8 - Special factory selection: DIP 2.8 provides special
factory selection. Normal position is “On.” Do not change
selection unless instructed to do so by the factory.
