Crown AWI195 - Manual

10 VI Venting Vent installation must be in accordance with local building codes, or the local authority having jurisdiction, or Chapters 7 and10 of the National Fuel Gas Code, NFPA 54/ANSI Z 223.1. Typical vent installation is illustrated by Figure 8. The components of vent installation are boiler d...

12 7) Do not connect the boiler into a chimney flue serving an open fireplace or other solid fuel appliance. 8) Prior to boiler installation, inspect chimney for obstructions or other defects and correct as required. Clean chimney as necessary. 9) Vent pipe should slope upward from draft diverter no...

13 connected to the common venting system are not in operation. a) Seal any unused opening in the common venting system. b) Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage orrestriction, leakage, corrosion and other deficiencies which could...

14 VIII System Piping Standard Piping Figure 11 shows typical boiler system connections on a single zone system. Additional information on hydronic systemdesign may be found in Installation of Residential Hydronic Systems (Pub. #200) published by the Hydronics Institute inBerkeley Heights, NJ. The c...

15 6) Low Water Cut-Off (Required in some situations) - A low water cutoff is required when the boiler is installed above radiation. In addition, some codes such as ASME CSD-1 require low water cutoffs. Codes may also require that thislow water cutoff have a manual reset function. The low water cuto...

18 IX Wiring Single Zone Wiring 1) 120 Volt Wiring - The boiler should be provided with its own 15A branch circuit with fused disconnect. All 120 volt connections are made inside the L8148E aquastat relay as follows (also see Fig. 16 or 17): • Hot (“black”) - Terminal “L1” • Neutral (“white”) - Term...

20 Wiring Variations 1) Multiple Circulator Zones – Figure 18 shows wiring for two or more circulator zones using Honeywell R845As. OneR845A is required for each circulator zone. Circulator terminals “C1” and “C2” on the L8148E are not used. A DPSTHoneywell RA832A may be substituted in place of the ...

21 AWI/TWI Control System – Sequence of Operation (Refer to Figures 16 or 17 for ladder and connection diagrams) Sequence of Operation, Standing Pilot 1) When the boiler is energized, 24 volts is immediately applied to terminals “1” (blue) and “4” (yellow) on the vent damper. Assuming that there is ...

23 X Start-up and Checkout Use the following procedure for initial start-up of the boiler: 1) Make sure that the boiler and system are filled with water. 2) Check all new gas piping for leaks and purge piping sections that are filled with air. See Part 4 of the National Fuel GasCode for additional i...

29 XI Service and Maintenance The following routine maintenance should be performed on an annual basis: 1) Turn off electrical power and gas supply to the boiler 2) Inspect the flue passages for signs of blockage. If there is any carbon in the combustion chamber or the flue passages, clean the heat ...

31 The following four pages contain troubleshooting charts for use in diagnosing control problems. To use these charts, go tothe box marked “Start” at the top of the chart on page 30 and follow the appropriate path though the chart until a box with alist of possible causes is reached. If the problem...

34 32 Standing Pilot Ignition System Troubleshooting Chart Pilot lit? Main burners light? Y Turn control ongas valve toPILOT. Depressred button andlight pilot. Holdbutton for atleast oneminute. Does pilot light? N *Pilot tubingblocked, kinkedor leaking *Pilot orificeblocked *Gas line notpurged of ai...

35 33 Does spark st op when pilot lights? 24 volt s across terminals 2&3 at S8600? Spark across ignitor/sensor gap? Y Can you hear sparking? *FaultyS8600module *Break inspark cableinsulation *Break in pilotporcelain *Incorrect pilotspark gap *Looseconnection inspark cable *Loosegroundconnection ...

36 XIII PARTS The following parts may be obtained from any Crown distributor. To find the closest Crown distributor, consult the areaCrown representative or the factory at: Crown Boiler Co.Customer ServiceP.O. Box 14818Philadelphia Pa. 19134 www.crownboiler.com Main burner orifice shown are for sea ...

42 Tel: (215) 535-8900 • Fax: (215) 535-9736 • www.crownboiler.com Manufacturer of Hydronic Heatings Products P.O. Box 14818 3633 I. Street Philadelphia, PA 19134 CROWN Boiler Co