COZY HEDV254A Installation And Operating Instructions Manual page 7

INSTALLATION
Failure to follow these instructions carefilllv could result in poor performance, property damage, personal injury, or
death.
STEP 1. LOCATE VENT OPENING (Requires 3-112" diameter wall opening)
a) Select area on wall where heater will be installed. Using template (packed with heater) mark shaded area
b)
c)
d)
e)
where hole can be cut and to locate the wall brackets. (See Figure 4).
Locate studs on each side of this area.
Mark location for 3-1/2" diameter hole between studs. Hole should be oft;et m miss studs. (See Fig. 4).
Check outside wall at this location for proper clearances around vent cap. (See Fig. 1).
Cut vent openings into both the inside and outside walls, being sure to maintain level across both openings.
I __ [
L_l g" I I
d
i I
Template _L
b
It Shaded
Area
j Wall
Studs
II 16" O.C.
FIGURE 4
Manual ball valv_
must be above floor
V,?a 1 1 _.,,
Manual shin offvalve with
1/8" NPT plugged tapping
Must be accessible in room
where heater is installed _
./8 Blackiron pipe_.
Gas
Supply
Leg
j_ Back of
heater
FIGURE 5
STEP 2. ROUGH-IN GAS SUPPLY (See Figure 5)
Install at least _/8 gas supply line. Contact local gas supplier if any questions.
Install a drip leg in gas supply line immediately upstream from the gas connection to heater (see local codes),
and provide a 1/8" N.RT. plugged tapping, accessible for test gauge connection and an individual manual shut
offvalve accessible within room where heater is installed. (See Figure 5). The heater and its individual shut off
valve must be disconnected from the gas supply piping system during any pressure testing of that system at test
pressures in excess of 1/2 psig (3.5Pa). The heater must be isolated from the gas supply piping system by
closing its individual manual shut offvatve during any pressure testing of the gas supply piping system at test
pressures equal to or less than 1/2 psig (3.5Pa). Test all connections for leaks using a soapy solution. NEVER
USE AN OPEN FLAME TO TEST FOR LEAKS.
The maxmmm inlet gas supply pressure for Natural or L.P./Propane gas is 1/2 p.s.i, or 14" w.c.
The minimum inlet gas supply pressure for the purpose of adjustment is 4.5" w.c. for Natural gas or 11.0" w.c. for
L.P./Propane gas.
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