Chromalox PF452-4 user manual

Summary of the content on the page No. 1

4 VUH

(Supersedes PF452-3) PF452-4
161-057824-001
JULY, 2002
Type VUH Vertical Unit Heater
Figure 1
Figure 2
Specifications – Table 1
Max.
Heating Capacity Volts Air Delivery Dimensions (In.)
Mtg.
Mtg.
Model
Weight
Outlet
Height
kW BTUH 1 Phase 3 Phase CFM FPM AB C D E F H M
(Lbs.)
Temp. °F* (Ft.)
208
VUH-C-30 30 102,000 – 240 2500 1200 96 33 18-7/8 19 34 10-5/8 15-1/4 3 11 20-3/4 250
480
38.5 240
136,000 –
VUH-C-40 2500 1200 108 30 18-

Summary of the content on the page No. 2

Table 2 – Electrical Data Contactor Power Supply Circuit Holding Coil Motor Volt Amperes Model Line (Note 3) Line Wire Minimum Amps Size No. Conduit kW Volts Phase (Note 1) (Note 2) Circuits Size † Inrush Sealed Volts H.P. Phase 208 3 44 6 2 1-1/4 208 VUH-C-30 30 240 3 38 8 2 1 104 18 240 1/3 3 480 3 37 8 1 1-3/4 480 38.5 240 3 48 6 2 1-1/4 240 VUH-C-40 104 18 1/3 3 39 480 3 48 6 1 1 480 VUH-C-50 50 480 3 31 8 2 1 104 18 480 1/3 3 1. Includes Fan Motor Amps

Summary of the content on the page No. 3

WIRING DIAGRAMS Figure 3 170-057688-011 Notes: 1.C1 Must Be Con- nected To 1st Stage Of Thermostat 2.For Single Stage Operation Jumper C1 & C3 Figure 4 170-057688-012 Notes: 1.C2 Must Be Con- nected To 1st Stage Of Thermostat 2.For Single Stage Operation Jumper C2 & C3 Figure 5 170-057688-013 Notes: 1.C2 Must Be Con- nected To 1st Stage Of Thermostat 2.For Single Stage Operation Jumper C2 & C3 3

Summary of the content on the page No. 4

WIRING DIAGRAMS Figure 6 170-057688-014 Notes: 1.C2 Must Be Con- nected To 1st Stage Of Thermostat 2.For Single Stage Operation Jumper C2 & C3 Figure 7 170-057688-015 Notes: 1.C2 Must Be Con- nected To 1st Stage Of Thermostat 2.For Single Stage Operation Jumper C2 & C3 Figure 8 170-057688-016 Notes: 1.C2 Must Be Con- nected To 1st Stage Of Thermostat 2.For Single Stage Operation Jumper C2 & C3 4

Summary of the content on the page No. 5

WIRING DIAGRAMS Figure 9 170-057688-017 Notes: 1.C2 Must Be Con- nected To 1st Stage Of Thermostat 2.For Single Stage Operation Jumper C2 & C3 Figure 10 170-057688-018 Notes: 1.C2 Must Be Con- nected To 1st Stage Of Thermostat 2.For Single Stage Operation Jumper C2 & C3 Motor Lubrication Motors in VUH-C-30 through VUH-C-50 heaters have ball bearings which are factory lubricated for life. Note: All fan motors are totally enclosed and internally thermal overload protected. 5

Summary of the content on the page No. 6

RENEWAL PARTS IDENTIFICATION MANUFACTURER PART NUMBER BREAKDOWN (LOCATED ON UNIT NAMEPLATE) V U H – C – – – – Common Parts Controls Diagram Diagram Wiring Wiring Diag. Description Part No. Code Part Number Item No. Description Item No. Dia. Fig. Part No. 4 Fan 112-510500-001 Contactor-24V Coil (30A) 072-303180-001 3 170-057688-011 5 Grille 134-130490-001 30-00 Contactor-24V Coil (50A) 072-303180-002 3 3 & 8 170-057688-016 Transformer 315-304252-002 7 6