Vanguard VI33PRA - Manual (Page 23)

110150-01B
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WIRING DIAGRAMS
SPECIFICATIONS
REPLACEMENT PARTS
SERVICE HINTS
TECHNICAL SERVICE
AUT
O
OF
F ON
Thermopile
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
Red
Variable
Fan Switch Fan Switch
(N.O.)
Green
White
On
110/115
V.A.C.
Blower
Motor
Black
Off
1
2
Black
Blue
Figure 43 - Blower 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.
SPECIFICATIONS
VI33NRA VI33PRA
Btu (Variable) 20,000/30,000 20,000/33,000
Type Gas Natural Gas Only Propane/LP Only
Ignition Piezo Piezo
Pressure Manifold 3.5" W.C. 8.0" W.C.
Inlet Gas Pressure (in. of water)
Maximum 10.5" 14"
Minimum* 5" 11"
* For input adjustment
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
• 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.