Chromalox PF451-3 user manual

Summary of the content on the page No. 1

SERVICE REFERENCE
Installation, Operation
DIVISION 4 SECTION VUH
and
SALES
REFERENCE (Supersedes PF451-2) PF451-3
RENEWAL PARTS IDENTIFICATION
161-057823-001
DATE JULY, 2002
Type VUH Vertical Unit Heater
Position With
Junction Box
Facing Away
48" Min. From Walls
Note:
For Easy Access
Knockout Location
12" Min.
F
4-11/16" Dia. See Table 2
H
A
Approx.
Mounting For Recommended
Holes Conduit Size.
D
E
M B
4-11/16" Dia.
Mounting Holes
7' Min.
C
L
To Floor
Warm A

Summary of the content on the page No. 2

Table 2 - Electrical Data Power Supply Circuit Contactor Motor Holding Coil Minimum Line Line Volt Ampheres No. Conduit Model kW Volts Phase Amps Wire Size (Note 3) Circuits Size † Volts H.P. Phase (Note 1) (Note 2) (In.) Inrush Sealed 208 3 43 6 1 1 208 VUH-C-15 15 240 3 37 8 1 1 52 9 240 1/6 3 480 3 19 10 1 1/2 480 19.5 240 3 48 6 1 1 240 VUH-C-20 52 9 1/6 3 20 480 3 25 8 1 3/4 480 VUH-C-25 25 480 3 31 8 1 3/4 52 9 480 1/6 3 Notes: 1. Includes Fan Motor Amps. 2. Use 75˚C Wire - Copper Conducto

Summary of the content on the page No. 3

MAINTENANCE WARNING: Hazard of Shock. Disconnect all power 1. Before activating for next heating season, vacuum or use com- to heater before servicing or replacing heaters. Do pressed air to remove accumulated dust or lint, which other- not attempt to service heater while unit is operat- wise may restrict proper air flow. ing as there is hazard of electric shock, injury 2. Periodically check all electrical connections and retighten to from operating fan, and burns from hot heating avoid electric

Summary of the content on the page No. 4

RENEWAL PARTS IDENTIFICATION MANUFACTURER PART NUMBER BREAKDOWN (LOCATED ON UNIT NAMEPLATE) V U H C Common Parts Diagram Description Part No. Item No. 4 Fan 112-510499-001 5 Grille 134-130439-001 Controls 6 Overheat Cutout 300-024283-004 Diag. Wiring Code Part Wiring Diagram Description Item Dia. No. Number Part No. No. Figure Elements and Motor Contactor-24V Coil (30A) 072-303180-001 3 Element Motor 30-00 Contactor-24V Coil (50A) 072-303180-002 3 3 170-057688-006 Code kW Volts Phase Part No. Pa