Vesta VRC-100 Quick Installation Manual

Quick Installation Guide
VRC-80, 100, 120, 140

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.
- 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 licensed professional.
- Follow all local codes and/or the most recent edition of the National Fuel
Gas Code (ANSI Z223.1/NFPA 54) in the USA, or the Natural Gas and Propane
Installation Code in Canada (CAN/CGA B149.1).

Before Installation

Choosing an Installation Location
When considering a location for installation, read "Installing the Boiler " in the Installa-
tion Manual.
Checking the Clearances
Clearances
The boiler should be installed in an area that allows for service and maintenance access
to utility connections, piping, filters, and traps. Ensure the following clearances are
maintained:
To p
B a c
k
Sid e
Sid e
F r o
n t
Bo tto m
Clearance From Wall Mounting
Top 12 inches (305 mm) min.
Back 0.6 inches (15 mm) min.
Front 6 inches (152 mm) min.
Sides 3 inches (76 mm) min.
Bottom 12 inches (300 mm) min.
Installation
Opening the Box
The following items are included with the boiler . Check each of the following items
before installation.
VST boiler Spare parts
Wall mounting bracket Tapping screws & anchors
Installation and User manual Gas conversion kit
Vent clip Quick installation manual
Pressure reilef valve 2" Vent termination cap & Wall flange
Checking the Rating Plate
Before the installation, check the rating plate located on the side of the boiler to ensure
that the boiler matches the gas type, gas pressure, water pressure, and electrical supply
available in the installation location. If the boiler does not match each of these ratings,
do not install the boiler . If the gas conversion is required, the included gas conversion
kit must be used.
VRC - Natural Gas
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.
1
Mounting the Boiler
Ver. 1.1
Mounting to the wall
To mount the boiler to the wall:
1
Check that the wall is level and can support the weight of the boiler .
2
Affix the mounting bracket securely to the wall.
3
Align the grooves on the back of the boiler with the tongues on the mounting
bracket and hang the boiler from the bracket.
Connecting the Gas Supply
1
Connect the gas supply line.
2
Check for gas leaks at all joints.
Notice
• Tighten the boiler connection valves with care to avoid damage.
• Apply gas leak detection solution to all gas fittings.
• The minimum internal diameter required for any appliance connector is ¾ ".
• When using flexible gas lines, ensure that the pipe's inner diameter and connector is
sufficient to supply the required BTUs. Also, ensure that the flexible line has no crimps
or tight bends in it, as this will restrict gas flow.
• To facilitate any future maintenance or service, the installation of a union on the gas
supply line close to the boiler is recommended.
Example of System Applications
Refer to the following examples to properly implement a system for space heating.
These example are provided to suggest basic guidelines when you install the boiler
system. However, the actual installation may vary depending on the circumstances,
local building codes, or state regulations. Check the local building codes and state
regulations thoroughly before installation, and comply with them fully.
Zone System with Zone Valves
Zone 1 Zone 2 Zone 3
Zone Valve
System pump
Air Separator
Not exceed Max.12 in
Expansion tank
Zone System with Circulators
Zone 1 Zone 2 Zone 3
Check Valve
System pump
Air Separator
Not exceed Max.12 in
Expansion tank
Pressure Relief Valve
This boiler comes with an ASME-approved pressure relief valve to install space heating.
To complete the installation of the boiler, you must install an approved 3/4", maximum
30 PSI (for space heating).
Improper installation of the pressure relief valve may result in property damage,
personal injury, or death. Follow all instructions and guidelines wllen installing the
Warning pressure relief valve. Only a licensed professional should install the valve.
Install the pressure relief valve as close to the boiler as possible. No other valve
should be installed between the pressure relief valve and boiler.
Caution
Pressure rilief valve
Space heating return Space heating supply
If the pressure relief valve discharges hot water periodically, thermal expansion may
occur due to an expansion tank problem or small expansion tank size. Do not plug the
pressure relief valve.
2