Installing The Water Heater - TANKLESS Paloma PTG-53DV Use & Care Manual

Installing the water heater:

downward slope
94° Elbow
Fire
2'
Stop
(61 cm)
Max.
Inspection
Access Panel #1
CAUTION: Ensure that the
appliance vent adapter is
securely attached to the
water heater collar.
Exhaust
Flow
Appliance
Vent Adapter
A
Collar
B
Water Heater
CAUTION: Condensate
is known to be acidic; refer
to local, state (provincial)
or federal codes for proper
handling and discharge
methods.
CAUTION: Condensate
must drain away from the
water heater and should
not be allowed to drain
back into any part of the
vent system.
WARNING: Failure to
provide a vent condensate
drain close to the appliance
could allow acidic flue gas
condensate to enter into
appliance flueways, causing
premature failure of the
appliance.
10
7/8" per foot
Wall Plates
Vent Pipe
Ceiling
Board
Inspection
Access
Panel #2
Appliance Vent Adapter
The water heater must be installed
with a UL 1738 approved Category III
Stainless Steel appliance coaxial vent
adapter.
Read the following instructions before
installation.
●
Test fit the adapter over the water heater
collar before proceeding.
Draining the Condensate
Provision should be made to collect and
dispose of condensate from venting systems.
When a water heater is vented horizontally,
the vent pipe can have only a DOWNWARD
slope towards the termination. See Example A
on page 13 for DOWNWARD slope for
horizontally vented water heaters.
When a water heater is vented vertically, an
UPWARD slope must always be used. A
condensate trap must be installed in the
horizontal section of the vent and as close
as practical to the water heater in order to
prevent condensate from draining back into
Venting Through Closed Spaces
If the coaxial vent piping passes through a closed space, a minimum
clearance of 1" (2.5 cm) when installed horizontally or 6" (15 cm) when
installed vertically should be maintained between the coaxial vent pipe
and combustibles and noncombustibles. Be sure to follow local codes and
vent manufacturer's installation instructions.
For maintenance and inspection purposes, the following access panels are
required.
●
Two (2) inspection access panels large enough to allow access for
venting inspection. One (1) of these access panels should be close
to where the coaxial vent pipe enters the ceiling. The other access
panel should be near the vent termination.
●
A ventilation access panel with a 16 in
be provided every 10 ft (3 m).
●
Slide adapter end "A" down over heater
collar "B" as far as it will go.
●
Use the screws provided with the vent
adapter to attach the adapter to the heater
collar.
NOTICE: Follow the appliance coaxial vent
adapter manufacturer's instructions.
the water heater. See the diagram on page 14
showing UPWARD slope for vertically
vented water heaters.
Always attach a drain hose to the drain fitting
and plumb the hose to a sanitary sewer drain.
A high temperature silicone tubing suitable for
use with acidic condensate and appropriate for
the temperature range should be used.
The drain tube is fashioned into a "pigtail" trap
and must be filled with water to prevent flue
gases from emitting into the building prior to
operating the appliance.
2 (103 cm 2 ) opening should