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A fully condensing heater can produce up to 1 gallon of water per
hour for every 100,000 Btuh of input.

The recuperative heat exchanger tubes are made from super
ferritic stainless steel alloy, resistant to the corrosive condensate
formed in this heat exchanger.

Aluminum fins attached to the exterior tube surfaces enhance heat
transfer from the recuperative heat exchanger to the circulating air
stream.

Summary of Contents for EM Series

Page 1: ...EM Series Application High Efficiency Condensing Duct Furnace ANSI Z83 8 2016 CSA 2 6M 2016 Gas Fired Duct Furnace 161202 ...

Page 2: ...efficient furnaces but also incorporate a recuperative heat exchanger to extract additional heat from the flue gases Additional heat is transferred to the circulating air stream and flue gas temperatures are reduced below their dew point temperature Water vapor present as a by product of the combustion process is condensed in the recuperative heat exchanger This process releases another 972 Btu lb...

Page 3: ...ut The recuperative heat exchanger tubes are made from super ferritic stainless steel alloy resistant to the corrosive condensate formed in this heat exchanger Aluminum fins attached to the exterior tube surfaces enhance heat transfer from the recuperative heat exchanger to the circulating air stream ...

Page 4: ...ubes and eliminate by pass air for optimum performance No portion of the heat exchanger exposed outside the duct or cabinet The duct furnace must have an ample supply of combustion air to the vestibule burner compartment The Duct furnace must be connected to a properly designed venting system to convey flue gases outside of the heating unit and the heated space to the outdoors and away from combus...

Page 5: ...perative coil located between primary heat exchanger passes Circulating air may enter either side of the furnace reducing the number of configurations Recuperative heat exchanger is located between passes of primary heat exchanger depending on airflow condition ...

Page 6: ...ximum 5 1 Turndown 10 1 Turndown 10 1 turndown designs require two induced draft fans per furnace EM furnaces may be installed in series provided the entering air temperature to the downstream furnace does exceed 80o F ...

Page 7: ...ion Summary Table Parallel heater installations are acceptable for EM Series with all configurations EAT LAT Location Configurations Eff 80 o F 160 o F Outdoor Indoor All 93 Duct Furnace Duct Furnace Airflow Top View OK ...

Page 8: ...urnace and induced draft fan Common vent headers may not be used The venting system must be gas tight and water tight Use Schedule 40 PVC pipe or vent pipe listed to UL 1738 In Canada the vent pipe must be approved to ULC S636 When using PVC pipe for venting sections must be solvent welded glued consistent with industry standards and applicable local codes Primer and cement for joints must conform...

Page 9: ... piping is installer provided A coupling is installed on the induced draft fan for attachment of vent pipe Depending on orientation a drain hose may be attached to the ID fan Flue Products must be directed downward Table Outdoor Vent Pipe Sizing For vent piping attached to a single induced draft fan Input Rating Btuh Input Rating W Vent Pipe Dia 90 000 135 000 26 376 39 564 3 in 76 mm 180 000 360 ...

Page 10: ...arge Vent Pipe Install Termination Screen 12 0 0 3m Min 18 0 0 45m Max 18 45m Minimum above grade or expected snow level 45o or 90o Elbow For horizontal runs the vent pipe should be pitched downward per foot toward the inducer fan drain ...

Page 11: ...Top Discharge Flue gases must be directed downwards ...

Page 12: ...inets must have properly sized Combustion air openings must be provided in a panel with access to the burner vestibule area Installation must be in an unconfined space with sufficient volume for all appliances located in the space A single properly sized pipe from the duct furnace vent connector to the outdoors must be provided Furnaces may be vented vertically or horizontally as shown in Figures ...

Page 13: ...scharge To Building Exterior Connect condensate drainper Section VII Standard Vent Drip Leg US only For top discharge orientations a flue exhaust drain coupling is provided and must be installed for proper condensate drainage from venting system ...

Page 14: ...To Building Exterior Pitch Vent pipe up per foot Connect to condensate drain Horizontal One Pipe Vent Figure a Figure b ...

Page 15: ... Exhaust Vent Pipe Max Vent Pipe Length Diameter Material 090 90 000 3 PVC 70 135 135 000 3 PVC 70 180 180 000 4 PVC 70 225 225 000 4 PVC 70 270 270 000 4 PVC 70 315 315 000 4 PVC 50 360 360 000 4 PVC 50 400 400 000 2 4 PVC 2 70 450 450 000 2 4 PVC 2 70 540 540 000 2 4 PVC 2 70 630 630 000 2 4 PVC 2 50 720 720 000 2 4 PVC 2 50 ...

Page 16: ... from outdoors into the furnace burner compartment through a properly sized pipe attached to the air intake collar This duct furnace installation requires a two 2 pipe separated combustion vent system with separate air intake and vent pipes terminating in the same pressure zone The venting and combustion air supply must be exclusive to a single furnace Do not use dampers in vent or combustion air ...

Page 17: ...Separated Combustion Indoor Vertical Venting Side Discharge Top Discharge Combustion Air Inlet 18 0 0 3m Min To Building Exterior Connect condensate drains Standard Vent Drip Leg US only Vent Pipe ...

Page 18: ...l system The maximum vent length is the equivalent length of pipe including any elbows and fittings Note for 90o wide sweep elbows equivalent length is 5 ft Combustion air pipe should be approximately the same length as the vent pipe so that air intake and vent discharge are in same pressure zone Note When single wall galvanized pipe is used for air pipe joints must be sealed with silicone sealant...

Page 19: ... Max Vent Pipe Length Diameter Material Diameter Material 090 90 000 3 PVC 3 PVC 35 135 135 000 3 PVC 3 PVC 35 180 180 000 4 PVC 4 PVC 35 225 225 000 4 PVC 4 PVC 35 270 270 000 6 Galv Steel or SS 4 PVC 35 315 315 000 6 Galv Steel or SS 4 PVC 25 360 360 000 6 Galv Steel or SS 4 PVC 25 400 400 000 6 Galv Steel or SS 2 4 PVC 2 35 450 450 000 8 Galv Steel or SS 2 4 PVC 2 35 540 540 000 8 Galv Steel or...

Page 20: ...152mm Minimum Combustion Air Inlet Pipe Vent Pipe Roof flashing at all penetrations 90o Elbow Vent Pipe 45o or 90o Elbow Install Termination Screen 12 0 3m Minimum Above roof or snow line 12 0 3m to 18 0 45m Above combustion air intake Combustion Air Inlet Pipe Install Screen ...

Page 21: ...Minimum Structure Min Clearances to Vent Terminal all directions unless specified Combustion air inlet of another appliance 6 ft 1 8m Forced air inlet within 10 ft 3 1m 3 ft 0 9m above Door window or gravity air inlet 4ft 1 2m horizontally 4 ft 1 2m below 1ft 0 3m above Gas meter and relief equipment Electric meter US 4ft 1 2m horizontally Canada 6 ft 1 8m Gas Regulator 3 ft 0 9m horizontally Adja...

Page 22: ...urnace The condensate drain system must include a trap for each furnace for proper system performance All joints must be watertight to prevent leakage The heat exchanger assembly includes a threaded elbow in the flue collector box oriented parallel to cabinet base A male threaded PVC adapter is included in the EZ Trap kit provided with the furnace to connect to the threaded elbow on the flue colle...

Page 23: ...ct furnace into building as shown in the following Figures Condensate Drain Connections for Outdoor Installation Roof Curb Furnace flue collector box Furnace cabinet base PVC Elbow by others PVC Pipe to reach to inside of building by others PVC Union by others EZ Trap cleanout provided with trap kit PVC Coupling EZ Trap EZT150 provided with trap kit PVC Pipe to Building drain system by others Appl...

Page 24: ...For outdoor installations heater configurations shown below must use the supplied drain tube installed on induced draft fan tap and in line with the heating unit condensate drain as shown ...

Page 25: ...o prevent freezing of condensate in the drain piping Trap must be located in a heated space or protected to avoid freezing Where condensate drain lines are located outdoors in a non heated space or in a space where temperatures may fall below freezing the drain line s must be protected ...

Page 26: ...Follow the heat tape manufacturer s installation recommendations Once condensate drain lines are indoors a common condensate drain header 1 diameter should be used to combine all drain lines only after each drain line is trapped For indoor installations with single vent pipe run condensate drain from duct furnace and vent pipe as shown in figures below for vertically vented or horizontally vented ...

Page 27: ... others EZ Trap cleanout provided with trap kit EZ Trap EZT150 provided with trap kit PVC Pipe to sanitary sewer connection for condensate removal Standard Vent Drip Leg US only PVC Tee by others Vent drains and flue collector box drains may be run into a common pipe downstream of the traps as shown in diagram above ...

Page 28: ... a drain connection to the fan housing A drain hose of proper temperature rating is provided and should be attached as shown in figure below For installations where the building drain lines are above the level of the duct furnace drain system a condensate pump is required ...

Page 29: ... foot Disposal of condensate is subject to local codes and ordinances In some locals the condensate drain system may be connected to a sanitary drain within the building Some municipalities require that the acidic condensate produced be neutralized before being discharged into the sanitary sewer A condensate neutralizer kit should be used Never connect condensate drains directly into a closed sewe...

Page 30: ... units must have separate drain lines from the flue box to the indoors Exhaust vent drains may be joined to a common condensate drain header 3 4 diameter Once condensate drain lines are indoors a common condensate drain header 1 diameter may be used to combine all drain lines only after each drain line is trapped ...

Page 31: ... penetration and each must be connected to its own individual P trap as shown in diagram below Drain lines may be joined to a common pipe downstream of P traps Furnace cabinet base PVC Elbow by others PVC Pipe to reach to inside of building by others PVC Union by others EZ Trap cleanout provided with trap kit PVC Coupling EZ Trap EZT150 provided with trap kit PVC Pipe to Building drain system by o...

Page 32: ...ould be used to access drain location and dispose of condensate to an indoor sewer line The number of drain lines will vary depending on the number of unit heaters The supplied EZ Traps kits should be installed in the correct orientation vertical with the float over the spring Each drain line must be trapped before connected to the common condensate manifold ...

Page 33: ... Line voltage readings between L1 and Neutral as well as L1 and Ground should be within 3 volts Operating electrical controls are mounted to a control panel and shipped separately Mounting locations should be selected to prevent exposing the controls to the following a Moisture especially wind driven rain or snow b Avoid mounting controls on or adjacent to surfaces that may be hot during heater op...

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