Chromalox PE429-1 user manual

Summary of the content on the page No. 1

Installation, Operation
4 NWHO
and
(Supersedes PE429) PE429-1
RENEWAL PARTS IDENTIFICATION 161-058065-001
FEBRUARY, 1986
Type NWHO-45, 72, 108
Circulation Heaters for
Regular and Fuel Oil
E
Heating
3
2 x /4”
1”
Slot
B
Specifications – Table A
Dimensions (In.)
13
8 /16”
No. 3Ø
D Model Volts 3Ø kW Circuits A B C D E
1 1 5 13 1
NWHO-4590 240 or 480 90 5 72 /2 25 /2 63 /8 18 /16 12 /2
1 1 5 13 1
NWHO-45125 240 or 480 125 5 87 /2 25 /2 78 /8 18 /16 12 /2
5 Conduit
1 1 5 13 1
NWHO-45150 240 or 480 150

Summary of the content on the page No. 2

WIRING CAUTION: Hazard of Electric Shock. Any installa- Fuses tion involving electric heaters must be grounded to 1L1 1L2 earth to eliminate shock hazard. 1L3 1. Electric wiring to heater must be installed in accordance with Contactor National Electrical Code and with local codes. 2. Because of high operating temperatures expected, aluminum Fuses wiring is not recommended. 2L1 2L2 3. Refer to Wiring Diagram Figure B for the typical wiring used 2L3 Thermostat for connecting the NWHO-45 series hea