VST VRP-150 User manual

REVOLUTION WATER
HEATER
Installation
Manual
Keep this manual near the water heater for future reference
whenever maintance or service is required.
* The wetted surface of this product contacted by consumable water contains less than one quarter of one percent (0.25%) of lead by weight.
* Lead Free
- The installation must conform with local codes or, in
the absence of local codes, the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas
and Propane Installation Code.
- When applicable, the installation must conform with
the Manufactured Home Construction and Safety
Standard, Title 24 CFR, Part 3280 and/or CAN/CSA Z240
MH Series, Mobile Homes.
Model
VRP-150 VRP-199
VRS-150 VRS-199
WARNING: If the information in these
instructions is not followed exactly, a fire or
explosion may result causing property damage,
personal injury, or death.
- Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
 WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
- Installation and service must be performed by a
qualified installer, service agency or the gas supplier.

2Installation Manual
Safety Information
The following safety symbols are used in this manual for user's safety. Read this manual carefully and follow all instructions to avoid property
damage, fire, explosion, personal injury, or death.
Warning
Caution
Indicates an imminently hazardous situation which, if not avoided, will result in severe injury or death.
Indicates a potentially hazardous situation which, if not avoided, will result in injury or death.
Indicates a potentially hazardous situation which, if not avoided, could result in property damage.
Danger
If you smell gas:
•Do not try to light any appliance.
•Do not touch any electrical switches or use landline phones.
•From a neighbor’s phone, call your gas provider and follow their instructions.
•If you cannot reach your gas provider, call the fire department.
Do not use or store flammable products, such as gasoline, solvents, or adhesives in the same room or area as the water heater.
•Vapors from flammable liquids can explode and/or catch fire causing death or severe burns.
•Keep flammable products far away from the water heater and store them in approved containers. Keep the containers tightly closed and out
of the reach of children.
•The Water heater has a main burner flame that can come on at any time and will ignite flammable vapors.
•Vapors cannot be seen and are heavier than air. Vapors travel a long way on the floor and can be carried from other rooms to the main
burner flame by air currents.
Avoid using hot water over 125F.
•Water temperature over 125F can cause severe burns or death from scalding.
•Children, the disabled and the elderly are at highest risk of being scalded.
•Test water before bathing or showering.
Temperature Time to Produce Serious Burn Temperature Time to Produce Serious Burn
120 °F (48 °C) More than 5 minutes 140 °F (60 °C) Less than 5 seconds
125 °F (51 °C) 1.5 to 2 minutes 145 °F (62 °C) Less than 3 seconds
130 °F (54 °C) Approx. 30 seconds 150 °F (65 °C) Approx. 1.5 seconds
135 °F (57 °C) Approx. 10 seconds 155 °F (68 °C) Approx. 1 second
Danger

3
Safety Information
Warning
•Do not store combustibles, such as papers or laundry, near the water heater or venting system.
Failure to do so may result in fire or explosion.
•Do not store or use gasoline or other flammable liquids near this water heater.
Failure to do so may result in fire or explosion.
•Do not store or use compressed gases, such as hair sprays or spray paints, near the water heater or venting system, including the
vent termination.
Failure to do so may result in fire or explosion.
•Do not remove the front cover unless the power to the water heater is turned off or disconnected.
Failure to do so may result in electric shock.
•Do not touch the internal components of the water heater or the power cord with wet hands.
Failure to do so may result in electric shock.
•Do not operate the water heater with the front cover opened.
Failure to do so may result in fire or carbon monoxide (CO) poisoning, which may result in property damage, personal injury, or death.
•Do not operate the water heater without proper venting.
Failure to do so may result in fire or carbon monoxide (CO) poisoning, which may result in property damage, personal injury, or death.
Caution
•Do not use the water heater for anything other than its intended purpose, as described in this manual.
Failure to do so may result in property damage, personal injury, or death.
•Do not turn on the water heater unless the water and gas supplies are fully opened.
Failure to do so may damage the water heater.
•Do not use unapproved replacement or accessory parts.
Failure to do so may result in improper or dangerous operation and will void the manufacturer's warranty.
•Label all wires prior to disconnection when servicing controls.
Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.
•Do not place anything in or around the vent terminals that could obstruct the air flow in or out of the water heater.
Failure to do so may result in fire or carbon monoxide (CO) poisoning, which may result in property damage, personal injury, or death.
•This water heater has been approved for use in the USA and Canada only.
Using the water heater in any other country will void the manufacturer's warranty.

4Installation Manual
Important Note for the State of Massachusetts
From Massachusetts Rules and Regulations 248 CMR 5.08:
(a) For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for
residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is
less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following
requirements shall be satisfied.
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented gas fuelled equipment,
the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is
installed on the floor level where the gas equipment is to be installed, in addition, the installing plumber or gas fitter shall observe that a
battery operated or hard-wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or
structure served by the side wall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure
the services of qualified licensed professionals for the installation of hard-wired carbon monoxide detectors.
a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard-wired
carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.
b. In the event that the requirements of this subdivision cannot be met at the time of completion of installation, the owner shall have
a period of thirty (30) days to comply with the above requirements; provided, however, that during said thirty (30) day period, a
battery operated carbon monoxide detector with an alarm shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above provisions shall
comply with NFPA 720 and be ANSI/UL 2034 listed as IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of
eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fuelled heating appliance or
equipment. The sign shall read, in print size no less than one-half (1/2) inch in size,“GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL
OBSTRUCTIONS”.
4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation
unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of
248 CMR 5.089(2)(a) 1 through 4.
(b) EXEMPTIONS. The following equipment is exempt from 248 CMR 5.089(2)(a) 1 through 4.
1. The equipment listed in Chapter 10 entitled“Equipment Not Required To Be Vented”in the most current edition of NFPA 54 as adopted
by the Board; and
2. Product Approved side wall horizontal vented gas fueled equipment installed in a room or structure separate from the dwelling, building
or structure used in whole or in part for residential purposes.
(c) MANUFACTURER REQUIREMENTS – GAS EQUIPMENT VENTING SYSTEM PROVIDED. When the manufacturer of Product Approved side wall
horizontally vented gas equipment provides a venting system design or venting system components with the equipment, the instructions
provided by the manufacturer for installation of the equipment and the venting system shall include:
1. Detailed instructions for the installation of the venting system design or the venting system components; and
2. A complete parts list for the venting system design or venting system.
(d) MANUFACTURER REQUIREMENTS – GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED. When the manufacturer of a Product Approved side
wall horizontally vented gas fueled equipment does not provide the parts for venting the fuel gases, but identifies “special venting systems”,
the following requirements shall be satisfied by the manufacturer.
1. The referenced“special venting system”instructions shall be included with the appliance or equipment installation instructions; and
2. The“special venting systems”shall be Product Approved by the Board, and the instructions for that system shall include a parts list and
detailed installation instructions.
(e) A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting instructions, all
parts lists for venting instructions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of
the installation.

5
Important Note for the State of Massachusetts
Table of Contents
Safety Information .................................... 2
Important Note for the State
of Massachusetts ....................................... 4
General Information.................................. 6
Included Items ................................................................... 6
Optional Accessories........................................................ 6
Specifications...................................................................... 7
Rating Plate ......................................................................... 8
Warning label ..................................................................... 9
Dimensions........................................................................10
Components .....................................................................12
Installing the Water Heater..................... 16
Installer Qualifications...................................................16
Compliance Requirements ..........................................16
Location..............................................................................16
Connecting the Gas Supply .................... 19
Gas Pipe Sizing Tables....................................................19
Gas Piping..........................................................................20
Inlet Gas Pressure............................................................21
Connecting the Water Supply................. 23
Water Piping......................................................................23
Pressure Relief Valve.......................................................25
Condensate Drain ...........................................................25
Condensate Trap..............................................................26
Installing a Vent
(For indoor installation only).................. 27
Vent Type............................................................................28
Vent Pipe Materials.........................................................32
Vent Length.......................................................................32
Connecting the Vent Clip .............................................33
Vent Termination.............................................................33
Common Vent System Information
(Optional) ................................................. 36
About the Common Vent System..............................36
Guideline for a Common Vent System.....................36
Determining the Length of Common
Vent System.......................................................................38
Installing a Vent
(For common vent installation only)...... 39
Install the Venting...........................................................39
Install the Venting...........................................................40
Maintenance.....................................................................43
Common Vent Clearances...........................................45
Setting the DIP Switches......................... 47
Connecting the Power Supply ................ 48
Setting the Program data ....................... 49
Self Calibration Mode.............................. 51
Installation Checklist............................... 53
Appendix.................................................. 55
Gas Conversion ................................................................55
Cascade System ...............................................................59
Remote Controller - VD-100 (optional)....................61
Grundfos Comfort System ...........................................63
Wiring Diagram........................................ 64
Ladder Diagram....................................... 66
Component Assembly Diagrams and
Parts Lists ................................................. 67
Case Parts (VRP & VRS)...................................................67
Flue Parts (VRP & VRS) ...................................................69
Water Parts (VRP Model)...............................................71
Water Parts (VRS Model)...............................................73
Normal Operating Sequence .................. 75

6Installation Manual
General Information
Included Items
The following items are included with the water heater. Check each
of the following items before installation.
Ø5 x 46 Tapping Screw
Part No. 3100201
Wall mounting bracket Tapping screws & anchors
Installation and
User manual Gas conversion kit
Vent clip Quick installation manual
Spare parts 2" Vent termination cap &
Wall flange
Notice
If there is a missing item, please contact Technical Support at 1-800-761-
0053.
Optional Accessories
The following optional accessories are not included with the water
heater, but may be necessary for the installation. Check the need for
any of the following optional accessories before installation.
Pressure relief valve Remote controller
Plumb easy valve set Cascade communication
cable
Outdoor Vent Kit Pipe Cover
Cascade controller
VESTA Wi-Fi Part No. 42110396
Backflue damper kit

7
General Information
Specifications
The following table shows the specifications for the water heater. Additional specifications about water, gas, electric, and air supplies (venting)
appear in each installation section.
item VRP-150 VRS-150 VRP-199 VRS-199
Heat Capacity (Input) Natural Gas 19,900–150,000 BTU/H 19,900–199,000 BTU/H
Propane Gas 19,900–150,000 BTU/H 19,900–199,000 BTU/H
Energy Factor Natural Gas 0.95 0.95 0.95 0.95
Propane Gas 0.95 0.95 0.95 0.95
Flow Rate (DHW)
35°F (19°C)
Temp Rise 8.4 GPM (32 LPM) 11.2 GPM (42 LPM)
45°F (25°C)
Temp Rise 6.5 GPM (25 LPM) 8.7 GPM (33 LPM)
77°F (43°C)
Temp Rise 3.8 GPM (14 LPM) 5.1 GPM (19 LPM)
Dimensions (W x D x H) 18.1“ x 11.6”x 27.6“ (460 mm x 295 mm x 700 mm)
Weight 75 lbs
(34 kg)
67 lbs
(30 kg)
75 lbs
(34 kg)
67 lbs
(30 kg)
Installation Type Indoor wall-hung
Venting Type Forced draft direct vent
Ignition Electronic ignition
Water Pressure 15–150 psi
Natural Gas Supply Pressure 3.5"–10.5" WC
Propane Gas Supply Pressure 8"–13" WC
Natural Gas Manifold Pressure (Min. – Max.) 0.01“ WC – -0.35”WC 0.01“ WC – -0.59”WC
High Altitude Manifold pressure 0.01“ WC – -0.30”WC 0.01“ WC – -0.55”WC
Propane Gas Manifold Pressure (Min. – Max.) 0.01“ WC – -0.30”WC 0.01“ WC – -0.56”WC
High Altitude Manifold pressure 0.01“ WC – -0.26”WC 0.01“ WC – -0.50”WC
Minimum Flow Rate 0.1 GPM (0.4 LPM) for VRP models / 0.5 GPM (1.9 LPM) for VRS models
Connection Sizes
Cold Water Inlet 3/4" NPT
Hot Water Outlet 3/4" NPT
Recirculation Water Inlet 3/4" NPT (Only VRP models)
Gas Inlet 3/4" NPT
Power Supply Main Supply 120V AC, 60 Hz / use less than 5 AMP
Materials Primary Heat Exchanger Stainless steel
Secondary Heat Exchanger
Venting
Exhaust 2" or 3" PVC, CPVC, Polypropylene
2" or 3" Special gas vent type BH (Class II, A/B/C)
Intake 2" or 3" PVC, CPVC, Polypropylene
2" or 3" Special gas vent type BH (Class II, A/B/C)
Vent Clearances 0" to combustibles
Safety Devices Flame rod, APS, Over heat preventer, Exhaust temperature high limit sensor, Power surge fuse
Power Consumption 135 W 75 W 165 W 105 W

8Installation Manual
Rating Plate
Danger
The gas type and electricity voltage must match the rating plate. Using a different gas type and electricity voltage will cause the water heater to
malfunction.
Before the installation, check the rating plate located on the side of the water heater to ensure that the water heater matches the gas type, gas
pressure, water pressure, and electrical supply available in the installation location. If the water heater does not match each of these ratings, do
not install the water heater. If the gas conversion is required, the included gas conversion kit must be used.
[Indoor rating plate][Outdoor rating plate]
* When installing the outdoor model, attach the rating plate in the outdoor kit over the red marking.

9
General Information
Warning label
Before the operation, check the warning label located on the side of the water heater to ensure that check the operating precautions and
operating procedures of the water heater.

10 Installation Manual
Dimensions
VRP
Description Diameter
ACondensate outlet 1/2"
BHot water outlet 3/4"
CRecirculation inlet 3/4"
DCold inlet 3/4"
EGas inlet 3/4"
FExhaust vent 2"
GAir inlet 2"
27.56" (700 mm)
31.95" (811.5 mm)
5" (127 mm)
3.19"
(81 mm) 6.86" (174.3 mm)
1.92"
(48.7 mm)
2.36"
(60 mm)
2.01"
(51 mm)
5" (127 mm)
6.49" (164.8 mm)
7.49" (190.2 mm)
4.12"
(104.6 mm)
A B C D E
2.80"
(71.1 mm) 0.36" (9.2 mm)
18.11" (460 mm)
5.57"
(141.5 mm)
5.26"
(133.5 mm)
11.61" (295 mm)
F
G