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ACV COMFORT 45, Installation And Maintenance Manual, Page: 1 / 30

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Technical Specifications

Installation and Maintenance Guide

• Before proceeding with installation and operation, read entire manual care-

fully. Failure to do so can cause injury or property damage.

• When receiving COMFORT Water Heaters, any claims for damage or

shortage in shipment must be filed immediately against the transporta-

tion company by the consignee.

2013-32 COMFORT IWH Manual

661A0100 rev C

• Warranty Registration Card must be filled out by the customer and mailed

within thirty (30) days of installation in order to gain warranty coverage.

• Retain and affix this manual near the water heater for future reference
• Installation and service should only be performed by a qualified installer or

service technician.

Indirect Fired Water Heater

Comfort

Date Revised 06/20/14

WARNING

IMPORTANT

Comfort manual _Comfort 55  9/8/14  10:29 AM  Page 1

Summary of Contents for COMFORT 45

Page 1: ...porta tion company by the consignee 2013 32 COMFORT IWH Manual 661A0100 rev C Warranty Registration Card must be filled out by the customer and mailed within thirty 30 days of installation in order to...

Page 2: ...Wiring Requirements 12 Circulators 12 Zone Valves 12 Connection 12 Installation Wiring Drawings 13 18 Water Heater Start Up Filling the Inner Domestic Water Tank 19 Filling the Outer Boiler Water Tan...

Page 3: ...ren disabled and elderly are at highest risk of being scalded Never leave them unattended in or near show er bathtub or sink Never allow small children to use a hot water faucet or draw their own bath...

Page 4: ...s with National Standard Plumbing Code provided that boiler water including additives is practically non toxic having toxicity rating or class of 1 as listed in Clinical Toxicology of Commercial Produ...

Page 5: ...2 ppm or mg l Copper less than 1 ppm or mg l Manganese less than 0 05 ppm or mg l Zinc less than 5 ppm or mg l In hard water areas more than 7 grains of hardness soften the cold domestic supply water...

Page 6: ...en such a location is unavoidable a suitable drain pan with adequate drainage should be placed under the water heater The COMFORT Series Water Heaters are designed for vertical installation only Recom...

Page 7: ...e use a T P relief valve with extended element We recommended an 8 minimum length to ensure element senses domestic water Installation Install the T P in the run straight through leg of a tee located...

Page 8: ...ated normal system expansion Correct this condition by installing a properly sized expansion tank in domestic water system Refer to expansion tank manufacturer s installation instructions for proper s...

Page 9: ...nd galvanized iron pipe If copper pipe is used for domestic water con nections first solder pipe to a threaded adapter and then screw adapter into cold water inlet on top of water heater Inlet contain...

Page 10: ...d on a closed type hydronic system Failure to provide such a system will result in prema ture failure of the outer tank and annulment of warranty Boiler water including additives must be practically n...

Page 11: ...g with Recirculation COMFORT 9 1 Shut off valve 2 Recirculation Circulator 3 Flow Check Valve 4 T P relief valve 5 Unions 6 Backflow preventer or pressure reducing valve 7 Drain valve 8 Thermal expans...

Page 12: ...4 1 3 Port Priority Valve 3 1 6 Cold water inlet 5 Fig 4 1 Shut off valves 2 Circulator 3 Expansion tank 4 Drain valve 5 Feed valve 6 Air separator Fig 3 COMFORT System Piping with 3 Port Zone Valve D...

Page 13: ...check valve 4 Expansion tank 5 Drain valve 6 Feed valve 7 Air separator COMFORT System Piping with Zone Valves Non Domestic Priority COMFORT System Piping with Zone Circulators 11 Installation Piping...

Page 14: ...nt must be used 3 Refer to control component instructions packed with boiler for application information 4 An optional service switch may be installed in water heater electrical circuit This switch wo...

Page 15: ...P and 1 Connections Optima Zone Panel SZC5 with Zone Pumps Wiring Fig 7 13 Installation Wiring Comfort manual _Comfort 55 9 8 14 10 29 AM Page 15...

Page 16: ...P and 1 Connections Optima Zone Panel SCZ5 with Zone Valves Wiring Fig 8 14 Installation Wiring Comfort manual _Comfort 55 9 8 14 10 29 AM Page 16...

Page 17: ...oiler control can burn out if isolation relay is not used Priority Relay H N High Voltage 120 V A C 24 V A C Room Thermostat Zone 1 Additional zones Additional zones may be added as shown above Transf...

Page 18: ...nd switches Transformer and boiler control can burn out if isolation relay is not used 16 Typical 3 wire Zone Valve Zoning without Domestic Priority H N High Voltage 120 V A C 24 V A C Room Thermostat...

Page 19: ...17 Typical Circulator Zoning with Domestic Priority 2 T T 1 4 3 5 6 Circulator Zone 1 Thermostat zone 1 Honeywell R845A Relay 120 H VAC N 2 T T 1 4 3 6 Circulator Zone 2 Thermostat zone 2 5 2 T T 1 4...

Page 20: ...zone 2 Thermostat zone 3 5 2 T T 1 4 3 6 5 High Voltage Low Voltage To Boiler 24 VAC Thermostat Leads 2 ON PRIORITY ZONING CIRCULATOR CIRC ON PR1 LIVE NEUT T T 2 1 P Water Heater Thermostat Priority...

Page 21: ...e pressurizing outer tank 1 Close boiler water drain valve at boiler water outlet of water heater 2 Open water heater s boiler water isolation valves 3 Allow air to escape from outer boiler water tank...

Page 22: ...at each hot water faucet bath and shower outlet Selection and installation must comply with valve manufacturer s recommendation and instructions Use the lowest practical temperature set ting Check wat...

Page 23: ...neumophila can form in the potable water distribution sys tem if certain minimum water temperatures are not maintained Contact your local health department for more information Check water temperature...

Page 24: ...valve valves pipes and fit tings for leaks Check function of field installed controls and valves See component manufacturer s instructions Review homeowner s maintenance responsi bilities and their f...

Page 25: ...supply isolation valve is closed 3 The outer boiler water tank pressure is less than 15 psig Reference domestic piping diagrams Figs 1 and 2 on page 9 Draining Inner Tank Option 1 1 Connect a hose to...

Page 26: ...the water heater 4 Open the domestic water drain valve and start the pump to begin draining the inner tank 5 When draining is complete stop the pump close the hot water faucet and close the domes tic...

Page 27: ...2 7 2 Aquastat Assembly 6 3 1 4 COMFORT Replacement Parts 25 Comfort manual _Comfort 55 9 8 14 10 29 AM Page 27...

Page 28: ...4 All Aquastat Assembly Knob Cover Aquastat 160 F 3 P3KITBTM05 All Bottom cap 4 P3KITTOP05 All Top cap 5 P3DW06 All Drywell Not Shown 6 P3WKITDT01 COMFORT 45 Dip tube P3WKITDT02 COMFORT 55 7 P3KNB02 A...

Page 29: ...MFORT 45 COMFORT 55 Capacity Gal Domestic 28 35 Boiler 17 20 Heating surface Sq Ft 13 16 Head loss boiler side Ft 3 4 1 1 4 Piping connections Inches Domestic 3 4 3 4 Boiler 1 1 1 4 Dimensions Inches...

Page 30: ...n boiler control SCCX6 Multiple boiler control extension SZC5 Zone control panel S3S Three stage boiler control SMV Mixing valve control SIM Injection mixing control SSM Snow melt control Optima Contr...

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