07/08 506146−01
*2P0708* *P506146-01*
Page 1
E2008 Lennox Industries Inc.
KITS COMMON TO HEATING AND
COOLING EQUIPMENT
Litho U.S.A.
ennox
n
us
r
es
nc.
Dallas, Texas, USA
506146−01
07/08
HP21/HS21 CONTACTOR
REPLACEMENT KIT
INSTALLATION INSTRUCTIONS FOR REPLACEMENT CONTACTOR KIT
(43W56) FOR USE WITH HP21 AND HS21 UNITS
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration,
service or maintenance can cause personal injury,
loss of life, or damage to property.
Installation and service must be performed by a
licensed professional installer (or equivalent) or a
service agency.
Shipping and Packing List
Package 1 of 1 contains the following
Item Description QTY
Contactor (3−pole 25A contactor with end switch) 48G5801 1
Contactor (3−pole 40A contactor) P−8−7716 1
Template (580104−01) to use as a locator for drilling holes
needed to install the two replacement contactors.
1
Wire ties 8
# 8−32 x 1/2 TFS mounting screws (P−8−9680) 6
6" long 18−gauge yellow wire 1
10" long 18−gauge blue wire 1
Wiring diagram sticker (single−phase) 537139−01 1
Wiring diagram sticker (three−phase) 537140−01 1
Shipping Damage
Check equipment for shipping damage. If you find any
damage, immediately contact the last carrier.
Application
This kit is to be used to replace the existing 5−pole
contactor with two new contactors in HS21 and HP21
single− and three−phase units.
Installation
CAUTION
Physical contact with metal edges and corners
while applying excessive force or rapid motion can
result in personal injury. Be aware of, and use
caution when working near these areas during
installation or while servicing this equipment.
WARNING
Electric Shock Hazard. Can cause
injury or death.
Unit may have multiple power
supplies. Disconnect all remote
electric power supplies before
opening access panel.
Unit must be grounded in accordance
with national and local codes.
Replace the contactor as follows:
1. Disconnect all electrical power to the unit. (The unit
may have multiple power supplies.)
2. Cut wire ties as necessary to allow enough wire length
to remove the 5−pole contactor from its location in the
unit. Remove as few wires as possible from the 5−pole
contactor. This will save time when wiring the new
contactors. Label any wires that must be
disconnected.
3. Use a 5/16" nut driver to remove the two 5/16" screws
that secure the 5−pole contactor into the unit. These
screws can be used to secure one side of the 3−pole,
25A replacement contactor.
4. Rotate the 5−pole contactor toward the right side of the
control box and remove the contactor from the unit.
5. Use the original contactor mounting holes as
reference and apply the provided contactor template
sticker to the back of the control box.
6. Drill 1/8" pilot holes as shown on the template. See
figure 1.
EXISTING
HOLES FROM
5−POLE
CONTACTOR
NEW HOLES
REQUIRED FOR
REPLACEMENT
CONTACTOR
NEW HOLES
REQUIRED FOR
REPLACEMENT
CONTACTOR
3−Pole, 25A Contactor
with End Switch
3−Pole, 40A Contactor
Figure 1. Template Sticker (580104−01)
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