Desa CLD3018PT - Manual (Page 11)

107068-01H
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11
11
INSTALLATION
Installing Heater Base Assembly (Cont.)
Connecting To Gas Supply
INSTALLATION
Continued
7. Mark screw locations through holes in mounting brackets (see
Figure 12). If installing in a brick-bottom fireplace, mark screw
locations in mortar joint of bricks.
8. Remove heater base from fireplace.
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) (see Figure 12).
Figure 12 - Attaching Base Assembly to Fireplace Floor
Masonry
Screw
Mounting
Bracket
Heater Gas
Regulator
Flexible Gas Hose
(if allowed by local codes)
Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator
Fitting
CONNECTING TO GAS SUPPLY
WARNING: A qualified service person must con-
nect heater to gas supply. Follow all local codes.
CAUTION: Never connect propane/LP heater di-
rectly to the propane/LP supply. Propane/LP heaters
require an external regulator (not supplied). Install
the external regulator between the heater and pro-
pane/LP supply.
WARNING: This appliance requires a 1/2" NPT
(National Pipe Thread) inlet connection to the pres-
sure regulator.
Installation Items Needed
Before installing heater, make sure you have the items listed below.
• external regulator (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 32.
For propane/LP gas, the installer must supply an external regulator.
The external regulator will reduce incoming gas pressure. You must
reduce incoming gas pressure to between 11 and 14 inches of water.
If you do not reduce incoming gas pressure, heater regulator damage
could occur. Install external regulator with the vent pointing down
as shown in Figure 13. Pointing the vent down protects it from
freezing rain or sleet.
Figure 13 - External Regulator With Vent Pointing Down
Propane/LP
Supply Tank
External
Regulator
Vent
Pointing
Down
CAUTION: Use only new, black iron or steel pipe.
Internally-tinned copper tubing may be used in certain
areas. Check your local codes. Use pipe of 1/2" diam-
eter or greater to allow proper gas volume to heater. If
pipe is too small, undue loss of volume will occur.
WARNING: For natural gas units, never connect
heater to private (non-utility) gas wells. This gas is
commonly known as wellhead gas.