Wiring Diagrams; Specifications; Replacement Parts; Service Hints - Vanguard VI33NRA Owner's Operation And Installation Manual

WIRING DIAGRAMS

Note : For proper operation of optional accessories, the wires from
the switch to the control must be connected exactly as shown in
Figure 42.
Figure 42 - Switch Wiring Diagram
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation. Verify proper
operation after servicing.
Variable
Fan Switch
1
Off
110/115
V.A.C.
Black
Green
White
Figure 43 - Blower Wiring Diagram

SPECIFICATIONS

VI33NRA
Btu (Variable) 20,000/30,000
Type Gas Natural Gas Only
Ignition Piezo
Pressure Manifold 3.5" W.C.
Inlet Gas Pressure (in. of water)
Maximum 10.5"
Minimum* 5"
* For input adjustment
For more information, visit www.desatech.com
For more information, visit www.desatech.com
110150-01B
Fan Switch
(N.O.)
Black
2
Blue
On
Red
Blower
Motor
VI33PRA
20,000/33,000
Propane/LP Only
Piezo
8.0" W.C.
14"
11"

REPLACEMENT PARTS

Note: Use only original replacement parts. This will protect your
warranty coverage for parts replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product. If they can't supply
original replacement part(s), call DESA International's Technical
Service Department at 1-866-672-6040. When calling DESA Inter-
national, have ready
• your name and address
• model and serial numbers of your heater
• how heater was malfunctioning
Thermopile
• type of gas used (propane/LP or natural gas)
• purchase date
Usually, we will ask you to return the part to the factory.
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product. If they can't supply original
replacement part(s), call DESA International at 1-866-672-6040 for
referral information. When calling DESA International, have ready
• model number of your heater
• the replacement part number

SERVICE HINTS

When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
• for propane/LP unit, propane/LP gas supply may be low
You may feel your gas pressure is low. If so, contact your local gas
supplier.

TECHNICAL SERVICE

You may have further questions about installation, operation, or
troubleshooting. If so, contact DESA International's Technical
Service Department at 1-866-672-6040. When calling please have
your model and serial numbers of your heater ready.
You can also visit DESA International's technical services web site
at www.desatech.com.
WIRING DIAGRAMS
SPECIFICATIONS
REPLACEMENT PARTS
SERVICE HINTS
TECHNICAL SERVICE
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