Riverside Hydronics VT.3 User guide

Form Number 34-23 08-10
1
START-UP OF VT.3 WATER BOILERS
For Detailed Information See Installation & Maintenance Manual
WARNING: If you do not follow these instructions exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.
1. Visually inspect boiler and components for damage and proper installation.
2. Turn off all electrical power to the appliance.
3. Turn off main manual gas valve.
4. Check all electrical connections for tightness, proper voltage, and proper grounding.
5. Check tank to make sure it is full of water. Ensure all plumbing connections to the tank are
tight.
6. Verify that the unit is supplied with the type of gas specified on the rating plate.
7. Connect a test meter to the control for reading the flame response signal.
8. Connect a manometer at the manual gas shutoff valve located at the inlet of the gas train.
Check inlet static gas pressure (must not exceed minimum listed on decal). Leave
manometer in place throughout testing.
9. Connect another manometer to the manifold test port at the shutoff valve closest to the
burner.
10. Turn on all electrical power to the appliance. Reset all safety devices (high limit, pressure
switch, Low-Water-Cutoff, etc.).
11. Turn the manual gas valve to the “ON” position. The Ignition Control should go through its
“Call For Heat” process and ignite the burner (see sequence of operation in manual).
12. The boiler has three temperature controls. The High Limit control is a manual reset non-
adjustable type. The Lower Limit is an auto reset type and can be dial adjusted to operate
just above the set point of the digital Operating Temperature Control. Set the adjustable
digital Temperature Control on the front control panel to deliver the desired water
temperature.
13. Check inlet flow gas pressure (should meet or exceed minimum listed on decal).
14. Measure the manifold gas pressure at the tapping located on the gas cock nearest the
burner to confirm the factory recommended set point (check while firing at both low fire and
high fire, if applicable).
15. Drill hole in vent pipe 12” to 24” from appliance flue outlet (for combustion analysis
equipment).
16. Burner Combustion Adjustment:
Burner combustion should only be adjusted using a combustion analyzer. Do not attempt to
adjust burner by sound or sight. With the burner firing, insert the combustion analyzer probe
into the vent pipe. In order to check combustion at throughout the modulation range it is
necessary to manually adjust the firing rate using the TempTrac control. (Refer to TempTrac
User Manual 34-80 for control details).

2 Form Number 34-23 08-10
a. With the burner firing and adjusted to low fire adjust the regulator screw clockwise to
increase gas flow or counter clockwise to decrease flow. The desired CO2 in the
combustion products should be between 7.5 and 8.5%. Do not attempt to adjust
combustion based on manifold pressure alone. Manifold pressure should only be used as
a reference point.
b. Once the desired combustion is achieved at low fire, raise the burner firing rate in
increments of 20% or less. At each firing rate adjust the valve orifice clockwise to reduce
the flow of gas and counter-clockwise to increase the flow of gas in order to maintain the
desired combustion as noted in step (a).
c. When high fire combustion has been reached and combustion is within the proper range,
return to low fire to confirm settings again. Repeat step (a) for low combustion and (b) if
further adjustment of range is necessary.
CAUTION: If at any point of the modulation range, carbon monoxide is in excess of
300ppm, contact Riverside Hydronicscustomer service for assistance.
17. Check the flue gases with an electronic combustion analyzer to make final adjustments to
the gas pressure regulator. When water in tank is above 120°F, insert the analyzer sensor
into the hole in the vent and record:
a. O2should be 5 ½% to 7% (target 6 ½%)
b. CO2should be 7 ½% to 8 1/2 % (target 8%)
c. CO should not exceed 200 PPM
d. Net stack temperature should be 275°F - 375°F
18. Measure the vent draft using a manometer or draft gauge and record the draft (should be
negative .02” to negative .06” W.C). Vent draft outside this range may indicate a
inadequately sized misadjusted vent.
To prevent products of combustion from escaping, cover the test hole in the vent with
aluminum adhesive tape.
19. Check the operating control to be sure it functions properly by lowering and raising the
operating temperature setting (see section “Thermostat Setting”) causing the burner to cycle
on and off.
20. Complete the attached startup report pages 3 & 4.
Note: A complete and proper start-up of this equipment is required to ensure
its safe and reliable operation. The attached startup form must be filled out
completely, and immediately provided to your Riverside Hydronics®
representative. Report all discrepancies to Riverside Hydronics® Customer
Service Department at 1-800-990-5918.

3 Form Number 34-23 08-10
START-UP REPORT
VT.3 Water Boilers
Warning: Startup must be performed by a qualified service installer, service agency or the gas supplier.
Model Number: Serial Number:
Job Name:
Address:
GENERAL INFORMATION
Restart? Yes No Installation is: New Replacement/Renovation Indoor Outdoor
Primary operating voltage supply: VAC Voltage from neutral to earth ground: (should be zero)
Thermostat Setting: °F Thermostat Setting: °F Hi-Limit Setting °F
Is the Pressure Relief Valve plumbed to a suitable drain? Yes No
Is the boiler condensate drain connection plumbed to a suitable drain? Yes No
Energy management System (EMS) Interface? Yes No Mfg. /Model:
EMS Function(s): Remote On-Off Staged- Firing Outdoor Reset Other:
EMS connected to which boiler terminals: MODBUS Control? Yes No
EMS Field wiring - Wire Gauge: Distance from EMS panel: Ft.
BOILER INSTALLATIONS (Closed Loop Heating System)
Boiler water supply and return piping size
Supply water temperature: °F Return water temperature: °F
What is the GPM of the building loop circulator pump? VFD? Yes No
What is the location of the circulator pump? Downstream from boiler Upstream from boiler
Is there a balancing valve (circuit setter) in the boiler loop? Yes No
VENTING and COMBUSTION AIR
Vent Material:
Vent Type: Through-the-roof Through Sidewall Vent Diameter: inches; Vent Length: feet
Does vent have condensate drain? Yes No Draft Regulator? Yes No
Does vent have elbows? Yes No; Qty / Type:
Does vent contain any of these devices? Power Vent Draft Inducer Other
Is vent device interlocked with boiler? Yes No Vent device connected to which boiler terminals:
Direct-ducted combustion air? Yes No Duct diameter inches. Duct length feet.
Duct Material: Does duct have elbows? Yes No; Qty / Type
Is combustion air supplied by louvers or openings Qty: Size:
Are louvers interlocked with boiler? Yes No Louvers connected to which boiler terminals:

4 Form Number 34-23 08-10
Model Number: Serial Number:
GAS SUPPLY
Type of Gas: Natural LP Gas Supply Pipe Size:
Max available gas pressure: Lb/Oz Gas Regulator Model: Range:
Inlet Static Gas Pressure: " W.C. (See rating decal for maximum inlet gas pressure)
Inlet Flow Gas Pressure: " W.C. (See rating decal for minimum inlet gas pressure)
Combination Gas Pressure Switch Setting: High " W.C. Low " W.C.
COMBUSTION ANALYSIS
Important: You must submit the original copy of the completed form to your Riverside Hydronics
representative before the warranty will become effective on this product.
Comments:
Service Company Name: Phone:
Service Co. Address:
Start-up Performed By: Date:
Customer: Phone No.: Date:
Combustion Data ( Full modulation) Low fire 50% 75% High fire
Flame Safeguard model:
Flame Signal
Oxygen O2 (5 ½ - 7%)
Manifold Gas Pressure
Carbon Monoxide CO (should not exceed 200 PPM)
Carbon Dioxide CO2 (7 ½ - 9%)
Nitrogen Oxide NOx (ppm)
Vent Pressure (-.02 to -.06” W.C.)
Gross Stack Temperature °F
Ambient Air Temperature °F
Net Stack Temperature °F (gross stack minus ambient air)
Combustion Efficiency %