Subject to change without notice. Printed in U.S.A.
262673-UIM-B-0707
Copyright
©
by York International Corp. 2007. All rights reserved.
Supersedes: 262673-UIM-A-0706
Unitary
5005
Norman
Product
York
OK
Group
Drive
73069
1. “Y” Terminal on Air Handler Control Board must be connected for full CFM and applications requiring 60 second blower off delay for SEER enhancement.
2. Optional humidity switch - contacts open on humidity rise.
3. Remove HUM STAT Jumper on AH Control Board
4. MODE Jumper on AH control board should be set to A/C for air conditioners and HP for heat pumps.
SECTION IX: MAINTENANCE
Filters must be cleaned or replaced when they become dirty. Inspect at
least once per month. The frequency of cleaning depends upon the
hours of operation and the local atmospheric conditions. Clean filters
keep unit efficiency high.
LUBRICATION
The bearings of the blower motor are permanently lubricated.
FIGURE 8:
Control Wiring
MA SERIES - Air Handler Control Wiring
Typical A/C - Cooling only Applications
THERMOSTAT
AIR HANDLER
BOARD
1 - STAGE
AIR CONDITIONING
R
R
G
Y
W1
W2
C
G
W1
W2
Y
C
Y / Y2
Y1
O
HUM
X / L
COM
HUMIDISTAT
