Technical Service Bulletin:
Evaporator Coil Replacement
Models:
IDP (5 Ton) Heat Pump Units
Data subject to change without notice | BTC 761702118 A | 06.2022
Bosch Thermotechnology Corp.
www.bosch-thermotechnology.us
65 Grove Street Watertown, MA 02472 | Tel: 1-866-642-3198
Please read this entire document prior to proceeding with any work.
WARNING:
This bulletin is intended to provide technical guidance to a
professional who is qualifi ed to work on heat pump products,
components, and refrigerant. If you are not qualifi ed to work
on such equipment, please obtain the services of qualifi ed
HVAC professionals.
WARNING: PERSONAL INJURY
The coil replacement procedure must not be undertaken
without fi rst removing all existing refrigerant from the
product.
If you have any questions regarding the information provided in this document,
please contact our Heat Pump Technical Support Team by phone at 1-800-283-
3787, or via email at
CAUTION: PERSONAL INJURY, PRODUCT DAMAGE
This procedure requires two people and the use of a
Coil
Replacement Support Ba
r (part#
8733957022
, available
from Bosch at no charge) in order to be carried out safely.
Please do NOT attempt this procedure alone or without
obtaining the support bar and having it ready to use.
Evaporator Coil Replacement Procedure
1.
Ensure that the unit is powered off and isolated from the electrical supply.
2.
Reclaim all refrigerant (refer to installation manual for correct procedure).
3.
Remove the 24 screws than run around the middle of
all four sides
of the
unit (Fig.1).
Figure 1
4.
Remove the side panels (Fig.2).
Figure 2
