Riverside Hydronics 2000 WB 250A-IF Troubleshooting Guide

1 34-53 08/14 VT.3® WATER BOILER INSTALLATION & MAINTENANCE MANUAL Models (1500, 1800, 2000) WB 250A-IF Installation and service must be pe

10 34-53 08/14 5.5 Gas Connection 1. Safe operation of unit requires adequate gas supply with the required static and dynamic (flow) pressures. Act

11 34-53 08/14 WARNING – Adequate clean combustion air must be provided to the appliance. Under no circumstances should the appliance ever be under

12 34-53 08/14 Vertical Remote Air (recommended) Horizontal Remote Air (allowed) 6.5 Remote Air Consideration for Combined Remote Air Ducting

13 34-53 08/14 • A barometric damper (draft control) is supplied with all models, unless the CAT34 option is ordered. If the boiler was ordered wit

14 34-53 08/14 • Obtain the correct adapter for attaching and sealing to the VT3 5-7/8 inch vent connection outlet from the manufacturer of the lis

15 34-53 08/14 7.3.2 Vertical or Horizontal Vent Termination 1. The vent terminal must have a minimum clearance of 4 feet (1.22 m) horizontally fr

16 34-53 08/14 8 OPERATING AND SAFETY CONTROLS 8.1 Operating Temperature Control An adjustable digital operating control is located in the fron

17 34-53 08/14 9 TEMPTRAC™ ELECTRONIC CONTROLLER PANEL 9.1 Principle Of Operation The boiler operates to satisfy the setpoint of the TempTrac dig

18 34-53 08/14 LABEL DEFAULT VALUE NET TEMPERATURE NET TEMP DETERMINED BY St1 165 165°F LED display value Hy1 -8 157°F St1 + Hy1 St4 -10 15

19 34-53 08/14 • D: The unit will remain in modulation until the sensed temperature rises above 155°F (St4). The firing rate returns to low fire. M

2 34-53 08/14 TABLE OF CONTENTS 1. Safety Considerations 2. Product Description 3. Boiler Installation 3.1 Checking Equipment Before You Insta

20 34-53 08/14 10 BOILER CONTROL INTERFACE A terminal strip for the remote connection is located behind the hinged control panel at the top of the

21 34-53 08/14 10.4 Making BMS/BAS remote connections for analog and binary (on/off) signals A terminal strip for the remote connection is located

22 34-53 08/14 • Outside Air Temperature Sensor Installation - The wire leads for the outdoor sensor should be connected to the TempTrac control

23 34-53 08/14 3. Call For Heat - If the TempTrac operating control senses a call-for-heat condition: a. The High Gas Pressure and low Gas Pressur

24 34-53 08/14 9. Flame Safeguard LED Diagnostic Indicator - If the Fenwal Flame Safeguard Control at any time during the operating sequence senses

25 34-53 08/14 12.5 Startup Procedure 1. Carefully study the burner start-up information included in this manual. 2. Fill system tank with water.

26 34-53 08/14 NOTE: After a modification, it will be possible to enter the Modulation output setting without entering the password for 10min. Afte

27 34-53 08/14 INLETPRESSUREMANIFOLDPRESSUREVALVE ORIFICEADJUSTMENTREGULATORADJUSTMENT Gas Train Illustration REGULATORADJUSTMENTHIGH GAS PRESSUR

28 34-53 08/14 13 TROUBLESHOOTING GUIDE Problem Probable Cause Corrective Action Starting or Pre-purge Failure Power Supply Check fuse and/or

29 34-53 08/14 14 REPLACEMENT PARTS REPLACEMENT PARTS

3 34-53 08/14 9. TempTrac Controller Panel 9.1 Principle of Operation 9.2 Upper LED Readout 9.3 Lower LED Readout 9.4 Control Buttons 9

30 34-53 08/14 14.1 Control Panel

31 34-53 08/14 14.2 Control Panel Components (Optional components may not be included) Key No. Part No. Description Qty. U/M 1 101947 CONT

32 34-53 08/14 14.3 Burner Assembly

33 34-53 08/14 14.4 Burner Assembly and Gas Train Components Optional components may not be included) Burner Assembly Components Item Qty Pa

34 34-53 08/14 15 PERIODIC MAINTENANCE Listed below are items that must be checked to ensure safe reliable operations. Maintenance must be performed

35 34-53 08/14 6. The combustion air filter should be replaced every six months. If filter blockage becomes excessive the filter safety switch will

36 34-53 08/14 16 RECOMMENDED MAINTENANCE SCHEDULE 1. Annual Maintenance a. Check all joints and pipe connections for tightness, corrosion or dete

37 34-53 08/14 NOTES:

38 34-53 08/14 MODEL NUMBER: SERIAL NUMBER: INSTALLATION DATE: Riverside Hydronics, LLC • 990 Haltom Road • Ft. Worth, TX 76117 • 1

4 34-53 08/14 1. SAFETY CONSIDERATIONS WARNING: If the information in the supplied manual(s) is not followed exactly, a fire, explosion or exposu

5 34-53 08/14 2 PRODUCT DESCRIPTION Component, Controls and Connection Locations (Locations May Vary)

6 34-53 08/14 3 BOILER INSTALLATION 3.1 Checking Equipment Before You Install Inspect the unit completely upon receipt from the freight carrier b

7 34-53 08/14 4 GENERAL PIPING GUIDELINES Consult factory for piping of hybrid boiler systems that contain both condensing and non-condensing boile

8 34-53 08/14 4.4 Filling The Boiler 1. Fill the system with water. To be sure that the unit is not “air bound,” open the relief valve. Leave the

9 34-53 08/14 *Multiplier for Propane: 1.57 **Multiplier for alternate pressure drops: 0.3" W.C. 0.77; 1.0" W.C. 1.41; 2.0" W.