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Indoor Horizontal Vent System

This section applies to horizontally vented two-pipe vent systems in addition to the instruction provided under “General”. All
venting and drain components, except for condensate traps, are provided by others.

Horizontal vent systems terminate horizontally. Install a Tee fitting with drip leg and cleanout trap as shown in Figure 14. Vent
and combustion air piping must be terminated as shown in Figure 15. All pipe openings external to building must have a
protective screen installed

.

Figure 14 – Indoor Horizontal Venting

Note: When single wall galvanized pipe is used for air pipe, joints must be sealed with silicone sealant
and/ or metallic tape.

Figure 15 – Horizontal Vent Termination

See Table 3 for required clearances from vent
termination to building features and structures.

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Содержание EMA Series

Страница 1: ...pplier s instructions If you cannot reach your gas supplier call the fire department Installation must be performed by a qualified installer service agency or gas supplier WARNING FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury death or property damage Be sure to read and understand the installation operation and service instructions in this manual...

Страница 2: ...Installations 11 16 c Separated Combustion Indoor 16 20 VII Condensate Drains General 20 a Outdoor Installations 21 23 b Common Condensate Manifold 23 c Indoor Installations 23 25 VIII Condensate Neutralization 25 IX Gas Supply Piping and Connections 26 27 X Electrical Supply and Ratings 28 XI Airflow Proving Switch 29 XII Operation and Safety 29 31 XIII Operating and Safety Controls 31 32 XIV Per...

Страница 3: ...34 48 10 96 372 000 30 100 3444 11481 117 228 1168 1162 876 1 02 109 022 17 56 0 90 3 01 360 000 46 00 45 76 27 98 8 89 334 800 30 100 3100 10333 105 505 1168 1162 711 0 83 98 120 17 56 0 81 2 71 315 000 46 00 45 76 24 73 7 86 292 950 30 100 2713 9042 92 317 1168 1162 628 0 73 85 855 17 56 0 71 2 37 270 000 46 00 45 76 21 48 6 83 251 100 30 100 2325 7750 79 129 1168 1162 546 0 63 73 590 17 56 0 61...

Страница 4: ...4 EMG Series ...

Страница 5: ...for combustion to operate properly and safely Provide adequate combustion air openings to the furnace as outline in Section V 4 Combustion products must be discharged to the outdoors Connect this furnace to an approved vent system as specified in Section VI 5 During heating operation condensate is produced in duct furnace sections Installation requires condensate drain system for each furnace sect...

Страница 6: ...an be drawn into adjacent building openings such as windows doors or fresh air intakes 2 Consider that the exhaust vent piping and combustion air piping separated combustion systems must be connected to the outside atmosphere Vent terminals should be located adjacent to one another Maximum equivalent vent lengths are listed in Tables 2 and 4 of the venting instructions 3 Equipment access panels an...

Страница 7: ...ing ductwork Support all ductwork securely DO NOT rely solely on heating unit duct connections for support Provide removable access panels in ductwork immediately upstream and downstream of duct furnace to allow for inspection of the heat exchanger These openings should be large enough to observe smoke or reflected light inside the casing to inspect heat exchanger for leaks and to check for hot sp...

Страница 8: ...ion and optimum unit efficiency Use of baffles and or turning vanes may be required to provide uniform air flow though the heating unit See Figure 4 A D below Observe recommended spacing from circulating air blower to heating unit Locating the circulating air blower too close to the unit creates uneven airflow over the heat exchanger resulting in poor performance and possible damage to heat exchan...

Страница 9: ...perly operating vent system which exhausts all the products of combustion flue gases to the outside atmosphere Venting must be in accordance with local codes and the National Fuel Gas Code NFPA54 ANSI Z223 1 in the United States or CAN CSA B149 1 Natural and Propane Installation Code in Canada Local requirements typically supersede national requirements EM Series duct furnaces are listed as Catego...

Страница 10: ...oupling is attached to the induced draft fan Insert length of Schedule 40 PVC pipe with diameter based on furnace input rating in Table1 and of sufficient length to extend at least 1 foot beyond cabinet through the rubber wall grommet in the cabinet panel and into the exhaust pipe coupling Tighten clamp on coupling to secure vent pipe Attach 45o or 90o Schedule 40 PVC elbow to the straight pipe se...

Страница 11: ...11 Figure 5 Outdoor Venting a Side Discharge b Top Discharge 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 ...

Страница 12: ... the duct furnace vent connector to the outdoors must be provided Furnaces may be vented vertically or horizontally as shown in Figures 6 and 8 Vent pipe diameter and maximum vent length are determined by furnace input rating as shown in Table 2 Flue gases must be directed downward Table 2 Vent Pipe Diameter and Maximum Vent Length The maximum vent length is the equivalent linear length of pipe Th...

Страница 13: ... for condensate drain connections to furnace and vent pipe Vertical vents should terminate as shown in Figure 7 Maintain proper spacing between adjacent buildings and walls Figure 7 Vertical Vent Termination Spacing 2 ft 6m From adjacent Wall or building Roof flashing required at penetration 45o or 90o Elbow 90o Elbow 18 0 45m Minimum Above Roof or Snow Line Vent Pipe Install Termination Screen ...

Страница 14: ...sponsibility of the installer Vent piping is supplied by others A collar for connection of listed vent piping is provided All field installed vent pipe and fittings must be from the same manufacturer DO NOT intermix vent system parts from different vent manufacturers Follow instruction provided with approved venting materials used See Table 2 Pg 12 for sizing of vent pipe diameter to insure proper...

Страница 15: ... 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 Adjacent public walkways 7 ft 2 1m above When venting through exterior combustible walls a minimum clearance of 1 must be maintained Refer to Figures 10 and 11 below for proper through the wall installations depending on ...

Страница 16: ...ms provide combustion air from outside the heated space and vent the products of combustion outdoors Additionally the heating unit must include the following 1 For vent pipe and fittings conveying flue gases use only Category IV vent materials listed to UL1738 ULC S636 from same vent manufacturer DO NOT intermix vent system parts from different vent manufacturers Follow instruction provided with a...

Страница 17: ...VC 2 25 The maximum vent length is the equivalent linear length of total pipe including any elbows and fittings Combustion air pipe should be approximately the same length as the vent pipe All furnaces have vent connector couplings for attachment of the vent pipe Slide pipe through side opening and into coupling Tighten pipe clamp to secure vent pipe Minimum length before any turns in pipe is 12 T...

Страница 18: ...thers Vertical vent systems terminate vertically up Install a Tee fitting with drip leg and cleanout trap as shown in Figure 12 Vent and combustion air piping must be terminated as shown in Figure 12 Figure 12 Indoor Vertical Venting Side Discharge Top Discharge Note When single wall galvanized pipe is used for air pipe joints must be sealed with silicone sealant and or metallic tape Figure 13 Ver...

Страница 19: ...tting with drip leg and cleanout trap as shown in Figure 14 Vent and combustion air piping must be terminated as shown in Figure 15 All pipe openings external to building must have a protective screen installed Figure 14 Indoor Horizontal Venting Note When single wall galvanized pipe is used for air pipe joints must be sealed with silicone sealant and or metallic tape Figure 15 Horizontal Vent Ter...

Страница 20: ... condensate piping to a suitable drain Be sure to apply sealant to threads to prevent leakage Installation of a union ahead of the trap is preferred to permit maintenance of drains and accommodate servicing of the heater Never connect condensate drain directly into a sewer line If connection to a sewer is permitted by code drain line must terminate in an open sewer tap separated by an air gap For ...

Страница 21: ...ctions for Outdoor Installation a Condensate Piping Typical Certain induced draft fan orientations require an additional condensate drain hose es to remove condensate from fan housing as shown in following illustrations b Side Discharge ...

Страница 22: ...22 c Two 2 Inducer Fan Systems See Figure 17 for Common Manifold Piping d Top Discharge ...

Страница 23: ...40 oF 4 4 oC self regulating shielded and waterproof heat tape Wrap the drain trap and drain line with heat tape and secure with ties Follow the heat tape manufacturer s installation recommendations Figure 17 Common Condensate Manifold Condensate drain lines may be connected to a common drain pipe Each individual drain line must be trapped before connected to the common condensate manifold The sup...

Страница 24: ...ires a drain connection to the fan housing A drain hose of proper temperature rating is provided and should be attached as shown below b For installations where the building drain lines are above the level of the duct furnace drain system a condensate pump is required A condensate pump kit is available for these applications ...

Страница 25: ...here condensate drains and or neutralization kit s are located outside a heated space or in a space where temperatures may fall below freezing all components and drain lines must be thermally protected An overflow bypass drain line must be installed as seen in Figure 20 When connecting drain line s to building drain an air gap must be present for proper operation of the condensate disposal system ...

Страница 26: ...an one heater have the proper pipe and internal orifice size for the total input of all heating units serviced by the regulator 4 The Minimum gas supply pressure to each furnace for use with Natural Gas is 5 0 w c and for Propane Gas is 11 0 w c Maximum gas pressure must not exceed 14 0 w c for either gas 5 A drip leg sediment trap and a manual shut off valve must be provided immediately upstream ...

Страница 27: ...uivalent for testing 2 Gas pressure to furnace controls must NEVER exceed 14 w c 1 2 PSI WARNING 1 When pressure testing at PSI or less close the manual shut off valve on the appliance before testing 2 When pressure testing gas supply line at PSI or higher close manual gas valve and disconnect heater from supply line to be tested Cap or plug the supply line ...

Страница 28: ...a Moisture especially wind driven rain or snow b High temperatures surfaces or ambient conditions higher than 130 oF c Avoid mounting controls on or adjacent to surfaces that may be hot during heater operation Be sure to provide ample clearance between controls and vent components Controls should never be located directly over vent piping Minimize length of high voltage spark lead s and route this...

Страница 29: ...it at the disconnect switch 4 Remove access panel or open door to unit vestibule housing the gas heater 5 Move gas control knob to Off position 6 Install a tapped fitting for attachment to a manometer or other gauge suitable for 14 0 w c in the inlet pressure tap See Figure 19 7 Install a tapped fitting for attachment to a manometer or other gauge suitable for 10 0 w c in the manifold pressure tap...

Страница 30: ...iated 4 Control will initiate up to three ignition trials on a call for heat before lockout of control occurs 5 Control can be brought out of lockout by turning thermostat or controller to its lowest position and waiting 5 seconds and then turning back up to call for heat Controls provided will automatically reset after one hour and initiate a call for heat Burner Flames Prior to completing the st...

Страница 31: ...t at disconnect switch 2 Turn on manual gas supply 3 Set Thermostat or Temperature controller to desired temperature 4 Information outlining the normal Sequence of Operation and Wiring Diagram for the control system supplied with the furnace model is enclosed with this instruction manual XIII Operating Safety Controls The following controls are provided integral to the listed duct furnace Combusti...

Страница 32: ... switch is factory set for the minimum inlet gas pressure for the heater model High Gas Pressure Switch A high gas pressure switch may be factory installed on the gas train to monitor the gas pressure downstream of the combination gas valve This switch shuts off the electrical supply to ignition controller closing the gas valve if high gas pressure occurs The pressure switch is factory set so that...

Страница 33: ...ean condensate drain trap s 7 Check condensate drain switch for cleanliness and proper function 8 If condensate neutralizer tube is installed recharge per instructions 9 Inspect and clean secondary coil fins 10 Check wiring connections to be sure they are secure and inspect wiring for any deterioration 11 Label all wires prior to disconnection when servicing unit Wiring errors can cause improper o...

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