Desa VYM27NR - Manual (Page 12)

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INSTALLATION
Continued
IMPORTANT: Make sure the heater burner is level.
If heater is not level, heater will not work properly.
Installation Items Needed
• hardware package (provided with heater)
• approved flexible gas hose (not provided) (if
allowed by local codes)
• sealant (resistant to propane/LP gas, not
provided)
• electric drill with 3/16" drill bit (metal or ma-
sonry as applicable)
• flathead screwdriver
1. Apply pipe joint sealant lightly to male
threads of the fitting to be threaded into gas
control. Connect approved flexible gas hose
to gas control fitting in heater (see Figure 11).
IMPORTANT: Hold gas fitting with wrench
when connecting flexible gas hose.
2. Locate two masonry screws in hardware package.
3. Place heater base in fireplace.
4. Place logs in their proper position on heater
base. See Installing Logs, page 15.
5. Center heater base and logs front-to-back and
side-to-side in fireplace.
6. Carefully remove logs without moving heater
base.
7. Mark screw locations through one hole on each
side of the mounting bracket (see Figure 12).
If installing in a brick-bottom fireplace, mark
screw locations in mortar joint of bricks.
8. Remove heater base from fireplace. If install-
ing optional control accessories, do so at this
time. Follow all directions provided with
accessory.
9. Drill holes at marked locations using 3/16"
drill bit.
10. Attach base assembly to fireplace floor using
two masonry screws (in hardware package).
Fitting
Flexible Gas
Hose (if allowed
by local codes)
Figure 11 - Attaching Flexible Gas Hose
to Heater
Figure 12 - Attaching Base Assembly to
Fireplace Floor
Masonry
Screw
Mounting
Flanges
CONNECTING TO GAS SUppLY
WARNING: A qualified service
person must connect heater to gas
supply. Follow all local codes.
WARNING: Never connect
propane/LP heater directly to the
propane/LP supply. This heater
requires an external regulator
(not supplied). Install the exter-
nal regulator between the heater
and propane/LP supply.
WARNING: Never connect
natural gas heater to private (non-
utility) gas wells. This gas is com-
monly known as wellhead gas.
Installation Items Needed
Before installing heater, make sure you have the
items listed below.
• external regulator (for propane/LP units only,
supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* A CSA design-certified equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional CSA
design-certified equipment shutoff valve from your
dealer. See Accessories, page 25.