OWNER’S MANUAL

WIRING DIAGRAM

Note: For proper operation of optional ac- cessories, the wires from the switch to the control must be connected exactly as shown.

REPLACEMENT PARTS

Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty.

OFF

ON

Thermopile

SPECIFICATIONS

 

Natural Gas

Propane/LP

Btu (Variable)

20,000/39,000

20,000/39,000

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"

Shipping Weight

32 lbs.

32 lbs.

* For input adjustment

 

 

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 call- ing DESA International, 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

propane/LP gas supply may be low

You may feel your gas pressure is too low. If so, contact your local natural or propane/LP gas supplier.

TECHNICAL

SERVICE

You may have further questions about in- stallation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-866-672-6040.

You can also visit DESA International’s technical services web site at www.desatech.com.

108382

21

For more information, visit www.desatech.com

Page 21
Image 21
Desa VYM27NR/PR, FVFM27NR/PR Wiring Diagram Replacement Parts, Specifications, Service Hints, Technical Service