Fenwal PSD Series Installation Instructions Manual page 7

Model 4WRM
Install a 4WRM into a 2WRLT or 2WRB base to function as a 4WRB as follows:
DETECTOR TESTING AND SENSITIVITY METERING
dictate which test to perform.
Equipment Required
Test Method
1.
RELAY MODULE
2WRM OR 4WRM
70-50100-XXX BASE
Figure 7. Relay Module
Figure 8. Installing Mechanical Adapter MA-001
The Authority having jurisdiction may
Model: 4WRB
EXISTING FENWAL
SERIES 70-201000-XXX
BASE
RETROFIT
ADAPTER MA-001
P/N 70-501000-003
CPD-705x
PSD-715x
THD-705x