Reznor VPS Series User manual

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PROPANE CONVERSION INSTRUCTIONS
(INCLUDING HIGH ALTITUDE ADJUSTMENT)
Applies to: Gas-Fired, Tubular Radiant,
Low-Intensity Infrared Heater
Models VPS, VPT, VCS, VCT
Part no. 270686Form CP-VC/VP-GC (Version B) 

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VPS MODEL NUMBERS
60 80 100 125 150 170 200
Conversion Kit Required 270619 270620 270621 270622 270623 270627 270628
Step Operation
1Burner Orifice
Replacement SECTION 1
2Fit Turbulators SECTION 2 
3Fit Flame Plate SECTION 3
4Replace Gas
Orifice SECTION 4a SECTION 4b 
5Install Baffle Plate SECTION 5 NOT REQUIRED
6Refit Burner Head SECTION 6
7Convert Gas
Valve SECTION 7a
8Replace Air
Pressure Switch NOT REQUIRED SECT 8a
9Replace Fan
Orifice SECTION 9a SECT 9b
10 Replace Data
Badge SECTION 10
11 Re-commissioning SECTION 11/12
NOT REQUIRED
VPS Conversion Step By Step
Please note: The LPG gas pressure must be reset according to the values in Section 12.

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VPT, VCS, VCT MODEL NUMBERS
60 80 100 125 150 170 200
Conversion Kit Required
VCS 270619 270620 270621 270622 270623 270627 270628
Conversion Kit Required
VPT/VCT 270619 270620 270621 270622 270623 270626 270628
Step Operation
1Burner Orifice
Replacement SECTION 1
2Fit Turbulators SECTION 2 NOT REQUIRED
3Fit Flame Plate SECTION 3
4Replace Gas
Orifice SECTION 4a SECTION 4c 
5Install Baffle Plate SECTION 5 NOT REQUIRED
6Refit Burner Head SECTION 6
7Convert Gas
Valve SECTION 7b
8Replace Air
Pressure Switch NOT REQUIRED SECT 8b
9Replace Fan
Orifice SECT 9c NOT REQ *SECT 9d 
10 Replace Data
Badge SECTION 10
11 Re-commissioning SECTION 11/12
SECTION 9c 
*VCS 170 = SECTION 9c, VPT 170, VCT 170 SECT 9d
VPT, VCS, VCT Conversion Step By Step
Please note: The LPG gas pressure must be reset according to the values in Section 12.

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B
Q L
M
H
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R
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P
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S
VPS Model
Part Code Description
B Gas Valve
H Gas orifice
L Pressure Switch
M Gaskets
P Burner Orifice Plate
Q Flame Plate Location (plate not shown)
R Fan Orifice Plate
S Baffle Plate Location (plate not shown)

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B
Q
L
M
H
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R
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P 
S
VPT, VCS/T Models
Part Code Description
B Gas Valve
H Gas orifice
L Pressure Switch
M Gaskets
P Burner Orifice Plate
Q Flame Plate Location (plate not shown)
R Fan Orifice Plate
S Baffle Plate Location (plate not shown)
Not on VCS models

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Section 1
Burner Orifice Plate Replacement (all models).
Step 1: Remove the four retaining screws securing
the burner casting using a no. 2 crosshead
screwdriver.
Step 3: The burner head assembly can now be
disconnected by separating the connectors of the
ignition and flame probe lead assemblies and
removing the ground lead and pressure switch silicon
tube.
Step 2: Remove the supporting casting and gasket.
Step 4: The burner orifice plate can then be released
by removing the 3 fixing screws from the burner tube
using a No.2 crosshead screwdriver.
Step 5: Using a flathead screwdriver remove the
retaining washer securing the impulse stud (arrowed).
Remove the stud. Remove the cable grommet from
the old orifice plate and attach to the replacement
plate.
Step 6: Fit new propane burner orifice plate to burner
tube ensuring the impulse stud is facing the correct
direction. The cable grommet is fitted to the lower of
the 3 holes at the bottom of the plate (arrowed). Two
new gaskets are provided and should be used when
reconnecting to the burner housing. Dispose of the old
gaskets.
See Section 13 for correct burner orifice plate
identification.
Section 2
Turbulator Information.
These heaters have a different arrangement of
turbulators and tube inserts when operating on LPG.
This section will guide you through the process of
changing these components where necessary.

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Flame Plate Identification
Figure 1: Tube Insert
Length 5൐(1524mm)
Part No. 270489 (201688)
Figure 2: Turbulator
Length 4൐3" (1277mm)
Part No. 270495 (202422)
Step 1: Prior to conversion a number of the natural
gas heaters use a tube insert Part No. 270489
(201688) See Figure 1.
This is not required when operating on LPG, please
check inside the firing leg. If fitted, remove and
discard.
Step 2: If your heater is a 20’ long model, fit the
turbulator Part No. 270495 (202422). See Figure 2.
(Note: This turbulator is already fitted to the 20’ VPT/
VCT heaters)
Section 3
Flame Plate Attachment (all models).
Step 1: Remove the 3 screws holding the burner head
in place with a no. 2 crosshead screwdriver.
Step 2: Discard the spacer bracket arrowed below.
Step 4: Attach flame plate to the burner tube using
the 3 screws removed in step 1. Ensure the flame
plate is mounted ON TOP of the original burner
head.
Step 3: Align the 5 holes in the flame plate (arrowed)
with the 5 holes on the outer edge of the burner
head as shown.
269957
269958
269959
269960

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Section 4a
Gas Orifice Replacement (60kBTU to 150kBTU
models only).
Step 1: Remove the burner casting as detailed in
section 1.
Step 2: Using a 12mm wrench remove the gas
orifice from the jet carrier by rotating
counter-clockwise.
Step 3: Replace the gas orifice with the propane
alternative ensuring an approved gas sealant is used
on the thread. DO NOT OVERTIGHTEN.
See Section 13 for gas orifice identification.
Section 4b
Gas Orifice Replacement (VPS 170kBTU to
200kBTU models only).
Step 1: Remove the burner casting as detailed in
section 1.
Step 2: Remove the two securing screws from the
base of the manifold, noting the ground terminal
connection.
Step 3: Remove the four screws holding the rear
burner plate in position (arrowed). Remove the rear
plate.
.Step 4: The manifold/gas orifice can now be
detached from the gas valve. The two screws
retaining the gas valve can then be removed.
Step 5: Replace the manifold/gas orifice with the
propane alternative ensuring an approved gas
sealant is used on the thread. DO NOT
OVERTIGHTEN.
See Section 13 for gas orifice identification.

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Section 5
Baffle Plate Installation (60kBTU to 100kBTU
models only).
Step 1: Locate the baffle plate in the LP conversion
kit.
Step 2: Carefully insert the baffle plate at an angle
through the combustion chamber opening, making
sure that the holes are positioned towards the holes
at the front of the burner box.
For VC burners there will already be 2 screws
located in these holes. Remove these screws before
proceeding.
Section 4c
Gas Orifice Replacement (VPT/VCS[T] 170kBTU
to 200kBTU models only).
Step 1: Remove the burner casting as detailed in
section 1.
Step 2: Remove the two securing screws from the
base of the orifice manifold, noting ground terminal
connection.
Step 3: Remove the four screws securing the base
plate and remove.
Step 4: Remove the gas valve wiring connections,
noting their positions.
Step 5: Remove the four screws (arrowed) securing
the gas valve inlet plate to the burner housing and
remove plate. Remove gas valve rearwards.
Step 6: The jet manifold/gas orifice can now be
detached from the gas valve.
Step 7: Replace the jet manifold/gas orifice with the
propane alternative ensuring an approved gas
sealant is used on the thread.
DO NOT OVERTIGHTEN.
Step 3: Align the holes and screw the baffle plate to
the burner box using the self tapping screws supplied.

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Section 6
Refitting Burner Head (all models).
Step 1: Reconnect the ignition and flame probe leads,
the ground lead and pressure switch silicon tube. Take
care to pass the leads and silicone tube through the
gasket. New gaskets are provided. The old gaskets
should be disposed of accordingly.
Step 2: Locate the burner head assembly over the
gas orifice ensuring the leads do not get pinched
between the orifice plate and burner housing.
Step 3: Refit the gasket and casting over the burner
head tube and fix with the original screws.
Section 7a
Gas Valve LP Conversion (VPS).
Step 1: To gain access to the gas valve loosen screw
in burner lid and open the right hand burner access
door.
Step 2: Remove the gas valve regulator cover screw
(brass).
Step 3: Remove the adjustment screw (white)
beneath cover screw.
Step 4: Remove natural gas regulator spring
(color-coded silver/plain) from regulator sleeve.
Step 5: Insert the LP regulator spring (provided in the
conversion kit and color-coded white) into the
regulator sleeve.
Step 6: Replace the regulator adjustment screw and
adjust approximately 8 turns clockwise from the
beginning of the thread.
Step 7: Adjust gas pressure as detailed in Section
11a or 11b.
Step 8: Replace regulator cover screw.
Step 9: Attach warning label to outside of burner
housing where it can be readily seen.
Step 10: Fit small round LP label to the top of the
converted gas valve cover screw.