HTP Hydra Smart RT-199 User manual

120 Braley Rd. P.O. Box 429 East Freetown, MA 02717-0429 www.htproducts.com
LP-507 REV. 6.5.14
QUICK REFERENCE GUIDE
MODELS: RT-199
CHAPTER 1 –BEFORE INSTALLATION
1. This water heater requires the use of direct vent type pipe as specified
by HTP, Inc. DO NOT use materials that are not specified for use with
this water heater.
2. Always install water heater exhaust vent / intake pipe terminations 12
inches above maximum expected snow accumulation levels.
3. Check the water heater rating plate to ensure the water heater is set to
operate on the gas supplied and that the gas supply line is sized to the
Btu/h required for this water heater.
4. The power supply required is 120VAC at 60Hz. Failure to provide the
correct power supply could result in electric shock or fire.
CHAPTER 2 –CONSIDER INSTALLATION SITE
Locate the water heater in a site where leakage from the water heater or
connections will not result in damage to the site adjacent to the water
heater. When such locations cannot be avoided, it is recommended that a
suitable drain pan, adequately drained, be installed under the water
heater. The water heater is suitable for indoor installations only. DO NOT
install the water heater outdoors or in a bathroom. In addition, install the
water heater in a location that allows for proper clearances to
combustible and noncombustible construction. Consult the rating plate on
the water heater for proper clearances.
Minimum Clearances
MINIMUM CLEARANCES
Installation Clearances from Non-
Combustibles / Combustibles
Recommended Service and Proper
Operation Clearances
Top
9 in. (228.6 mm)
9 in. (228.6 mm)
Back
5/8 in. (15.9 mm)
5/8 in. (15.9 mm)
Front
6 in. (152.4 mm)
24 in. (609.6 mm) or more (Front of
Water heater)
(A combustible door or removable
panel is acceptable front clearance.)
Right Side
3 in. (76.2 mm)
3 in. (76.2 mm)
Left Side
Bottom
12 in. (304.8 mm)
12 in. (304.8 mm)
CHAPTER 3 –INSTALLATION
A. INCLUDED ACCESSORIES
B. MOUNTING ON THE WALL
Please refer to the installation manual before mounting the water
heater.
Ensure the mounting location can support the weight of the filled
water heater.
Drill four (4) holes with a 15/32 drill bit in the locations on the wall
bracket.
Mount the wall bracket level on the wall with four (4) anchor bolts.
Align the grooves on the back of the water heater with the tongue
on the wall mounting bracket.
Remove the four screws on the water heater front cover. Remove
the front cover.
C. GAS PIPING
The gas connection fitting on the water heater is ¾” female NPT.
The supply line must be sized for the maximum output of the water heater
model being installed. If there are additional gas appliances connected to
the same supply line, size the supply line according to the COMBINED
total maximum BTUH draw for the appliances as if they were operating at
the same time.
DO NOT operate the water heater until all connections have been
completed and the heat exchanger is filled with water.
D. WATER PIPING
Ensure pipe material is suitable to meet local codes and standards. The
pipe must be clean and without blemish. DO NOT apply torch heat within
12” of the bottom connections of the water heater.
Read the Installation Manual carefully and be sure that your water
heater has been properly assembled BEFORE reviewing these
instructions. Failure to follow the instructions included in the
Installation Manual exactly as written could result in fire, explosion,
electrical shock, or other situation that could result in property
damage, serious personal injury, or death. Installation and service
must be performed by a qualified plumber, licensed gas fitter, or a
professional technician in accordance with all local codes. Improper
installation and/or operation by an unqualified person WILL VOID the
warranty. This water heater must be installed in accordance with all
local codes. In the absence of local codes, follow ANSI Z223.1 /
NFPA 54 or CAN/CSA B149.1, Natural Gas and Propane Installation
Code, as applicable.

2
LP-507 Rev. 6.5.14
The pipe size used for supply heating water should be the same used for
the return water.
The size of the hot water pipe should be ¾” diameter. Install tankless
isolation valves to ease future service.
E. CONDENSATE DRAIN CONNECTION
Condensate must be drained in accordance
with all local regulations. Follow local codes
with regards to disposal of condensation.
Drawing shows (1) Condensate to neutralizer,
(2) to floor drain, (3) to laundry tub, (4) to
condensate pump.
Use only corrosion resistant materials for the
condensate drain lines, such as ½” PVC,
CPVC, Polypropylene, or the included plastic
hose.
If a neutralizer is installed, periodic
replacement of the limestone (or neutralizing
agent) will be required. The rate of depletion of
limestone varies upon usage of the water
heater.
During the first year of operation, please check
the neutralizer every few months for depletion.
F. VENTING
Allowable Schedule 40 Vent Lengths (PVC, CPVC, PP)
MODEL
2” COMBUSTION AIR /
VENT PIPE
3” COMBUSTION AIR /
VENT PIPE
MAX
MAX ALLOWED
NUMBER OF
ELBOWS
MAX
MAX ALLOWED
NUMBER OF
ELBOWS
RT-199
15’
(4.5M)
2
100’
(30M)
6
NOTE: It is very important to ensure all vents are properly supported.
G. POWER CONNECTIONS AND DIP SWITCH
i. Power Connections
Install wiring and electrically ground the water heater in accordance with
the authority having jurisdiction, or, in the absence of such an authority,
follow the National Electrical Code, NFPA 70, and/or CSA C22.1
Electrical Code-Part 1 in Canada. For your safety, turn off the electrical
power supply at the service entrance panel before making any electrical
connections to avoid possible electrical shock hazard. Failure to do so
could result in property damage, severe personal injury, or death.
NOTE: DO NOT disconnect the power supply during normal water heater
operation.
ii. Dip Switch
DIP SWITCH
OFF
ON
1 –3
NOT USED
NOT USED
4
NOT USED
NOT USED
5
Gas Type
LP
NG
6
High Fire
Normal
High Fire
7
Low Fire
Normal
Low Fire
CHAPTER 4 –AFTER INSTALLATION
A. OPEN THE WATER AND GAS LINE VALVES
B. ADJUST CONTROL PANEL ON WATER HEATER FRONT COVER
Ensure the water heater is powered ON. Press and hold the button at
standby mode. Current DHW set-point will display and flash. Also, the
caution mark (H.) will be indicated. Current DHW set-point can be
changed by rotating the dial. After changing the temperature, press the
Button to save
C. MEASURING INLET GAS PRESSURE
NOTE: Refer Installation Manual when adjusting gas pressure.
1. The water heater and its individual shutoff valve must be disconnected
from the gas supply piping system during any pressure testing of the
system at test pressures greater than ½ psi (3.5 kPa).
2. The water heater must be isolated from the gas supply piping system
by closing its individual manual shutoff valve during any pressure testing
of the gas supply piping system at test pressures equal to or less than ½
psi (3.5 kPa).
The minimum and maximum inlet gas line pressures must meet the
requirements shown below.
LP GAS
NATURAL GAS
Minimum Pressure
3.5” WC
Minimum Pressure
3.5” WC
Maximum Pressure
14” WC
Maximum Pressure
14” WC
NOTICE
Do not fire (operate) the water heater until all connections have been
completed and the heat exchanger is filled with water. Doing so will
damage the water heater and void the warranty.
CHAPTER 5 –FINAL CHECK
1. Check Installation Conditions.
2. Check Gas Pipe Installation for leaks.
3. Check Exhaust Vent and Intake Pipe Installation for leaks. Ensure all
vent pipes are properly supported.
4. Check Condensate Drain Installation.
5. Ensure DIP switches are properly set for the Installation.
6. Check the Power Supply and Connections.
7. Check Burner Flame for proper operation.
NOTICE: HTP reserves the right to make product changes or updates
without notice and will not be held liable for typographical errors in
literature.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR
FUTURE REFERENCE.