Owner's Manual

Version B - For Reduction G016.J

Model 3VH21

Dayton Operating Instructions and Parts Manual

Reference Part No. For

Number Description Model 3VH21 Quantity

Replacement Parts List

Model 3VH21 Natural Gas Construction Heater

1 Top Disk 104145-02 1

2 Emitter 103897-02 1

3 Shell 103898-02 1

4 Insulation Ring 104116-01 1

5 Outer Base Assembly 104137-01 1

6 Rear Burner Shield 103935-01 1

7 Leg 103902-01 3

8 Spacer 103903-01 6

9 Burner Shield 103900-02 1

10 Nozzle 099138-05 1

11 Burner Tube Assembly 104114-01 1

12 Ignitor Electrode 104118-03 1

13 Pilot Burner Assembly 097163-07 1

14 Thermocouple Clip 099237-01 1

15 Pilot Burner Orifice 097161-01 1

16 Sleeve M5788 1

17 Hex Nut M5787 1

18 Pilot Tube 103028-02 1

19 Manual Control Valve 097152-01 1

20 Burner Support 103901-01 1

21 Tee Compression Gauge 099461-01 1

22 Brass Hex Cap 099460-01 1

23 Automatic Control Valve 097155-01 1

24 Female Connector 097157-03 1

25 Hose 104142-01 1

26 Regulator 104141-01 1

27 Piezo Ignitor 102445-01 1

28 Thermocouple 097151-01 1

29 Pilot Shield 104143-02 1

30 1/2 NPT to 1/2 45º Male Flare Connector 103401-01 1

31 Base Shield 103899-01 1

∆ Hose Fitting Regulator Assembly 104120-01 1

∆ Tradename Decal 099153-11 1

∆ Operation Decal 104128-02 1

∆ Owner's Manual 104134-01 1

(∆) Not shown.

3VH21

Use only original replacement parts. This heater must use design-specific parts. Do not substitute or use

generic parts. Improper replacement parts could cause serious or fatal injuries. This will also protect

your warranty coverage for parts replaced under warranty.