McQuay WMA series User Manual

Page 14 / IM 447
Multiple Unit Control Panel for Mark IV
Up to 3 Units (Part No. 056794201)
The multiple unit control board is an accessory used when you
need to control up to 3-units from a single thermostat. The
board is typically mounted in the unit control box closest to the
thermostat. A maximum of 2 boards may be used together if up
to 6-units must be connected and controlled from a single
thermostat.
This version of the board uses VAC relays and should not be
used in combination with any other accessories or equipment
The multiple unit control board is an accessory used when you
need to control up to 2-units from a single thermostat. The board
is typically mounted in the unit control box closest to the
thermostat. The "G", "W", "Y", "C", and "L" connections are
short flying leads pre-attached to the board. A maximum of 3
boards may be used together if up to 4-units must be connected
and controlled from a single thermostat.
This version of the board uses VDC relays and should not be
used in combination with any other accessories or equipment
OW2GW1Y1 F E L U A P V R C
WSHP Mark IV/AC Board Low Voltage Terminal Strip
OW2GW1Y1 F E L U A P V R C
OW2GW1Y1 F E L U A P V R C
R
Y
G
W
R
Y
G
W
R
Y
G
W
GWY R C
GW1Y1RRcC
Thermostat Terminals
WSHP Mark IV/AC Board Low Voltage Terminal Strip
WSHP Mark IV/AC Board Low Voltage Terminal Strip
Multiple Unit
Control Panel
TB3
TB2
TB1
TB4
that require VDC connections to the "G", "W1", or "Y1" terminals
(i.e. Boilerless System Kit).
The multiple unit control board provides the components nec-
essary to protect the Mark IV/AC board from electrical damage
that may occur when using standard off-the-shelf relays.
Do not use the unoccupied (U-terminal) feature with the
multiple unit control board.
Up to 2 Units (Part No. 106059801)
that require VAC Connections to the "G", "W1" or "Y1" terminals
(i.e. Boilerless System Kit). Do not use the unoccupied (U-
terminal) feature with the multiple unit control board.
The multiple unit control board provides the components nec-
essary to protect the Mark IV/AC board from electrical damage
that may occur when using standard off-the-shelf relays.
The multiple unit control feature is for remote wall thermostat
operation.
WSHP Mark IV/AC Board Low Voltage Terminal Strip
OW2GW1Y1 F E L U A P V R C
R
Y
G
W
L
GW1Y1 R Rc C
Thermostat Terminals
Multiple Unit
Control
Panel
WSHP Mark IV/AC Board Low Voltage Terminal Strip
OW2GW1Y1 F E L U A P V R C
GWY C L

McQuay WMA series Specifications

General

Brand	McQuay
Model	WMA series
Category	Heat Pump
Language	English