REZNOR VZ VZH Gas Fired Low Intensity Radiant Tube Heaters Installation Guide
- September 11, 2024
- Reznor
Table of Contents
REZNOR VZ VZH Gas Fired Low Intensity Radiant Tube Heaters
Product Information
Specifications
- Product Name: Gas-Fired Low-Intensity Radiant Tube Heaters Conversion Kit
- Models: VZ and VZH
Kit Components
Ensure that all applicable components listed in Table 1 and/or Table 2 are
available before beginning installation.
Option DJ20: High-Elevation Conversion Kit Components
| Unit Size (MBTUh) | Model VZ Kit PN | Model VZH Kit PN | Component PN |
|---|
Option DL2: Propane Conversion Kit Components
| Unit Size (MBTUh) | Model VZ Kit PN* | Model VZH Kit PN | Component PN |
|---|
Product Usage Instructions
Installation Steps
- Ensure all kit components are available.
- Follow the instructions provided for your specific model and kit option.
- Install the conversion label and burner orifice as per the manual.
Maintenance Tips
- Regularly inspect and clean the burner orifice.
- Check for any leaks or damage to components.
FAQs
- Q: Can I install the conversion kit myself?
A: No, these kits are to be installed by a qualified service agency to ensure safety and compliance.
These kits are to be installed by a qualified service agency in accordance with these instructions and in compliance with all codes and requirements of authorities having jurisdiction. Improper installation, adjustment, alteration, service, and/or maintenance can cause property damage, injury, or death. The qualified agency performing this work assumes responsibility for this installation.
- Option DJ20 is for converting units for use at elevations >2,000 feet (>610 meters). Deration is necessary to compensate for low atmospheric pressure at high elevations. This requires replacing the burner orifice.
- Option DL2 is for converting natural gas units for use with propane. When converting fuels, it is necessary to have the complete heater model. The identifying model number can be found on the heater rating plate. The rating plate identifies only original equipment, so also compare the label on the gas valve with the description listed.
- Refer to the installation manual provided with the unit for important safety information.
KIT COMPONENTS
Ensure that all applicable components listed in Table 1 and/or Table 2 are available before beginning installation.
Table 1. Option DJ20: High-Elevation Conversion Kit Components
Component
| Unit Size (MBTUh)
40| 60| 80| 100| 115| 125| 140| 150|
175| 200
Model VZ Kit PN
1047456| 1047457| 1047458| 1047459| 1047460|
1047461| 1047462| 1047463| 1047464| 1047465
Model VZH Kit PN
1047466| 1047467| 1047468| 1047469| —| 1047470|
—| 1047471| 1047472| —
Component PN
Conversion label| 197062
Burner orifice| Refer to Table 3 or Table 4
Table 2. Option DL2: Propane Conversion Kit Components
Component
| Unit Size (MBTUh)
40| 60| 80| 100| 115| 125| 140| 150|
175
Model VZ Kit PN
BH040NP- WR| BH060NP- WR| BH080NP- WR|
BH100NP- WR| BH115NP- WR| BH125NP- WR| BH140NP-
WR| BH150NP- WR| BH175NP- WR
Model VZH Kit PN
V040NP| V060NP| V080NP| V100NP| —| V125NP|
—| V150NP| V175NP
Component PN
Conversion label| 91039400
Regulator spring| 90032800
Burner orifice| Refer to Table 4
There is no propane conversion kit available for model VZ unit size
200.
DO NOT DESTROY. PLEASE READ CAREFULLY. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
Table 3. Replacement Natural Gas Burner Orifices
Elevation *** (Feet (Meters))| **
Model
| Unit Size (MBTUh)
40| 60| 80| 100| 115| 125| 140| 150|
175| 200
PN (Drill Size)
0–2000
(0–610)
| VZ| ****
91910486
(3.0 mm)
| 91910426
(#26)
| ****
91910418
(#18)
| ****
91910412
(#12)
| 91910404
(#4)
| 91910403
(#3)
| 91910496
(#26)
| 91910496
(#26)
| ****
91910495 (E)
| 91910494 (I)
VZH| 91910427
(#27)
| —| 91910405
(#5)
| —| 91910401
(#1)
| —
2001–3000
(611–915)
| VZ| ****
91910433
(#33)
| 91910427
(#27)
| ****
91910419
(#19)
| ****
91910413
(#13)
| 91910406
(#6)
| 91910404
(#4)
| 91910496 (A)| 91910496 (A)| ****
91910495 (E)
| 91910494 (I)
VZH| 91910428
(#28)
| —| 91910407
(#7)
| —| 91910402
(#2)
| —
3001–4000
(916–1220)
| VZ| ****
91910434
(#34)
| ****
91910428
(#28)
| ****
91910419
(#19)
| ****
91910414
(#14)
| 91910407
(#7)
| 91910405
(#5)
| 91910401
(#1)
| 91910401
(#1)
| ****
91910497 (D)
| 91910510 (H)
VZH| —| 91910408
(#8)
| —| 91910402
(#2)
| —
4001- 5000
(1221–1525)
| VZ| ****
91910435
(#35)
| 91910428
(#28)
| ****
91910420
(#20)
| ****
91910415
(#15)
| 91910408
(#8)
| 91910407
(#7)
| 91910401
(#1)
| 91910401
(#1)
| ****
91910497 (D)
| 91910499 (G)
VZH| 91910429
(#29)
| —| 91910409
(#9)
| —| 91910403
(#3)
| —
5001–6000
(1526–1830)
| VZ| ****
91910435
(#35)
| 91910428
(#28)
| ****
91910421
(#21)
| ****
91910416
(#16)
| 91910409
(#9)
| 91910408
(#8)
| 91910402
(#2)
| 91910402
(#2)
| ****
91910503 (C)
| 91910499 (G)
VZH| 91910429
(#29)
| —| 91910410
(#10)
| —| 91910403
(#3)
| —
6001–7000
(1831–2135)
| VZ| ****
91910436
(#36)
| ****
91910429
(#29)
| ****
91910422
(#22)
| ****
91910417
(#17)
| 91910411
(#11)
| 91910409
(#9)
| 91910402
(#2)
| 91910402
(#2)
| ****
91910503 (C)
| 91910493 (F)
VZH| —| 91910412
(#12)
| —| 91910404
(#4)
| —
7001–8000
(2136–2440)
| VZ| ****
91910436
(#36)
| 91910429
(#29)
| ****
91910423
(#23)
| ****
91910417
(#17)
| 91910412
(#12)
| 91910410
(#10)
| 91910403
(#3)
| 91910403
(#3)
| ****
91910498 (B)
| 91910493 (F)
VZH| 91910430
(#30)
| —| 91910413
(#13)
| —| 91910405
(#5)
| —
8001–9000
(2441–2745)
| VZ| ****
91910437
(#37)
| ****
91910430
(#30)
| ****
91910424
(#24)
| ****
91910418
(#18)
| 91910413
(#13)
| 91910412
(#12)
| 91910403
(#3)
| 91910403
(#3)
| ****
91910498 (B)
| 91910495 (E)
VZH| —| 91910414
(#14)
| —| 91910407
(#7)
| —
9001–10,000
(2746–3045)
| VZ| ****
91910438
(#38)
| ****
91910430
(#30)
| ****
91910426
(#26)
| ****
91910419
(#19)
| 91910414
(#14)
| 91910413
(#13)
| 91910404
(#4)
| 91910404
(#4)
| ****
91910496 (A)
| 91910495 (E)
VZH| —| 91910415
(#15)
| —| 91910408
(#8)
| —
*** Orifices listed for elevations >2,000 feet (>610 meters) are included
in option DJ20.
Table 4. Replacement Propane Burner Orifices**
Elevation *** (Feet (Meters))| **
Model
| Unit Size (MBTUh)
40| 60| 80| 100| 115| 125| 140| 150|
175
PN (Drill Size)
0–2000
(0–610)
| VZ| ****
91910449
(#49)
| ****
91910444
(#44)
| 91910437
(#37)
| ****
91910433
(#33)
| 91910490
(1/8 inch)
| 91910430
(#30)
| 91910429
(#29)
| ****
91910428
(#28)
| ****
91910425
(#25)
VZH| 91910438
(#38)
| —| 91910484
(3.2 mm)
| —
2001–3000
(611–915)
| VZ| ****
91910450
(#50)
| ****
91910445
(#45)
| 91910438
(#38)
| ****
91910435
(#35)
| 91910479
(3.1 mm)
| 91910430
(#30)
| 91910429
(#29)
| ****
91910429
(#29)
| ****
91910426
(#26)
VZH| 91910439
(#39)
| —| 91910479
(3.1 mm)
| —
3001–4000
(916–1220)
| VZ| ****
91910450
(#50)
| ****
91910445
(#45)
| 91910439
(#39)
| ****
91910435
(#35)
| 91910432
(#32)
| 91910431
(#31)
| 91910430
(#30)
| ****
91910429
(#29)
| ****
91910427
(#27)
VZH| 91910440
(#40)
| —| 91910432
(#32)
| —
4001- 5000
(1221–1525)
| VZ| ****
91910450
(#50)
| ****
91910445
(#45)
| 91910439
(#39)
| ****
91910436
(#36)
| 91910433
(#33)
| 91910431
(#31)
| 91910430
(#30)
| ****
91910429
(#29)
| ****
91910427
(#27)
VZH| 91910441
(#41)
| —| 91910433
(#33)
| —
5001–6000
(1526–1830)
| VZ| ****
91910451
(#51)
| ****
91910446
(#46)
| 91910440
(#40)
| ****
91910436
(#36)
| 91910434
(#34)
| 91910431
(#31)
| 91910430
(#30)
| ****
91910430
(#30)
| ****
91910428
(#28)
VZH| 91910441
(#41)
| —| 91910434
(#34)
| —
6001–7000
(1831–2135)
| VZ| ****
91910451
(#51)
| ****
91910447
(#47)
| 91910441
(#41)
| ****
91910437
(#37)
| 91910435
(#35)
| 91910431
(#31)
| 91910430
(#30)
| ****
91910430
(#30)
| ****
91910428
(#28)
VZH| 91910442
(#42)
| —| 91910435
(#35)
| —
7001–8000
(2136–2440)
| VZ| ****
91910451
(#51)
| ****
91910447
(#47)
| ****
91910442
(#42)
| ****
91910438
(#38)
| 91910435
(#35)
| 91910432
(#32)
| 91910431
(#31)
| ****
91910430
(#30)
| ****
91910429
(#29)
VZH| —| 91910436
(#36)
| —
8001–9000
(2441–2745)
| VZ| ****
91910452
(#52)
| ****
91910448
(#48)
| 91910442
(#42)
| ****
91910438
(#38)
| 91910436
(#36)
| 91910432
(#32)
| 91910431
(#31)
| ****
91910430
(#30)
| ****
91910429
(#29)
VZH| 91910443
(#43)
| —| 91910436
(#36)
| —
9001–10,000
(2746–3045)
| VZ| ****
91910452
(#52)
| ****
91910448
(#48)
| ****
91910443
(#43)
| ****
91910440
(#40)
| 91910437
(#37)
| 91910433
(#33)
| 91910431
(#31)
| ****
91910431
(#31)
| ****
91910430
(#30)
VZH| —| 91910437
(#37)
| —
***** Orifices listed for elevations >2,000 feet (>610 meters) are included
in option DJ20. Orifices listed for elevations <2,001 feet (<611 meters) are
included in option DL2.
INSTALLATION
NOTE: This procedure assumes that the unit has already been installed. However, the conversion kits may be installed on a unit that has not been installed. For an uninstalled unit, ensure that the installation is completed in accordance with the installation manual provided with the unit when the conversion is complete.
-
Remove gas supply and electrical power:
- a. Close manual shutoff valve on flexible gas connector to turn OFF gas supply to heater.
- b.Turn OFF electrical power.
-
Remove burner cabinet panel(s) for access:
- a.For model VZ, disconnect combustion air piping from blower if unit is connected to outside combustion air, unplug blower motor power cable, and remove top blower panel with blower and motor assembly attached.
- b.For model VZH, remove both side panels.
-
Replace burner orifice:
DANGER Ensure that the correct orifice for installation elevation and type of fuel is installed.- a. Select appropriate replacement orifice from Table 3 or Table 4.
- b. Remove and save screws that secure ignitor assembly (see Figure 1) to inside panel and remove ignitor assembly (remains connected to wiring harness).
- c. Insert screwdriver in holes in burner cup shaft (see Figure 1) and use as leverage to loosen burner cup from gas manifold. Continue to unthread burner cup from gas manifold by hand and move out of way to access burner orifice.
- d. Using wrench, remove existing burner orifice (see Figure 2) from gas manifold.
- DANGER
- DO NOT attempt to drill the burner orifice. Use a factory-supplied orifice only.
- DO NOT block the burner orifice with pipe joint compound. Pipe joint compounds (pipe dope) shall be resistant to the action of any chemical constituents of the gas being supplied.
- DO NOT overtighten the burner orifice.
- e. Using approved pipe joint compound, thread replacement orifice from kit into gas manifold by hand until snug. Torque orifice to 15 inch-pounds using wrench.
f. Rethread burner cup into gas manifold by hand and then tighten using screwdriver.
g. Re-install ignitor assembly on inside panel and secure using existing screws.
-
If installing high-elevation conversion kit (option DJ20) only, proceed to step 5. If installing propane conversion kit (option DL2), replace regulator spring in combination gas valve as follows:
- a. For model VZ, open hinged access door.
- b. Remove cover screw, regulator screw, and existing regulator spring from combination gas valve’s regulator sleeve (see Figure 3).
- c. Install replacement regulator spring from kit into regulator sleeve and thread regulator screw approximately eight turns into sleeve.
-
Open manual shutoff valve on flexible gas connector to turn ON gas supply to heater.
DANGER: DO NOT use an open flame to check for gas leaks. -
Perform leak test:
- a. Check all connections for gas leaks using commercial leak-detecting fluid or rich soap and water solution. Leaks are indicated by presence of bubbles.
- b. If leak is detected, tighten connection. If leak cannot be stopped by tightening connection, replace part(s).
-
Adjust manifold (outlet) gas pressure in accordance with Measure and Adjust Manifold Gas (Outlet) Pressure section in installation manual provided with unit.
-
Re-install panel(s) removed in step 2.
-
For model VZ, close hinged access door, reconnect combustion air piping to blower if unit is connected to outside combustion air, and plug in blower motor power cable.
-
Install appropriate conversion label (see Figure 4) from kit:
- a. Using permanent marker, fill in data on conversion label. Refer to unit’s rating plate for input.
- b. Adhere label to burner cabinet.
-
Start up heater and check for proper operation.
Specifications and illustrations subject to change without notice or incurring
obligations.
Latest version of this manual is available at
www.reznorhvac.com.
©2024 Nortek Global HVAC LLC, O’Fallon, MO. All rights reserved.
VZ-VZH-DJ20-DL2 (06-24) 1047445-0
References
Read User Manual Online (PDF format)
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