|
J . `__��.__'_______._.T�_-._.______.-___�___ -�-_....�_�___�_�_..'...__-__.__..______._._-_.�_'__�.�'___'_..�_�__,..__._._'_.'__.'_____'.___'.._._.�.___._____"� "__._._.�..__� ____-__ '_'__._�.�.._'�.._-' ___._._ (.� .. . ..
<br /> . . _'_'-__._.. .._._---"'_'___ "__'_.�__� .��_...,.__._.._._'_'__'_.-__.._.. .--___'___'____ .._._ .�___.�._�"'_.'.______--_._____ _'____._"_'__._ _'.._'__ _'__'_'_^ . �.""'_.�...'__'_..___ . e____'-_"-''-.'___--__'---___'__-`-'_'_ "_.'�'_..___ , . I ,
<br /> � _...,_.___" '_'___�_'-__-'_"'-____...`_.__._.'___'_'--__'-_'__.__ ' _-'___ '_'_'__"_'__.___ '___"_'T : -- . ,^� I �• .
<br /> , , ` . P - � � � .•� ',
<br /> . P -R1 I �
<br /> SDR T i ��
<br /> , HYDRO�#IC �IR HANDLI�JG IJNIT
<br /> 10.3 . N.C. so : H � . "� '
<br /> RF �
<br /> •��
<br /> EA ---J� '-�'- RA �,� � �
<br /> M � � ?_81.-5 f:��CKci^�=L�._��, ,�VE=
<br /> � � � � � � � � CT F • � r���.��r7� tiva �:��2���� �
<br /> � � � � � 2 DUCT SPS, LOCATE AT ���a���; r�; 3�� ����i ��
<br /> � � � � � � � � � � � � EACH FLQORS CLG �� F�,x. �,z�� :s� 7.:�T�� '�
<br /> ` , VFD 1
<br /> FE DUCT SP�, LOCATE NEAR THE END !
<br /> I DR N.O. vFD �SETWORSIETCASEI�O AD U�ORO FAN SPEED
<br /> HARGIS 'I
<br /> ; Run Condition�- Scheduled: Coolinq CoiL•
<br /> ', The unit shall run based upon an operator adjustable schedule OR when a variable air volume'unit is The controller shall measure#he su I air tem erature and sta e the coolin to maintain its coolin VFD F HIGH LIMIT� SPS ' '
<br /> commanded on or when a var�iable air volume terminal unit is commar,ded on. ' pp y p g g g Hargis Engineers, Inc. ,
<br /> ,. setpoint. To prevent short cycling, there shall be a user definable ad'. dela between sta es, and each LOCATE WITHIN MAW TRIJNK DUCT
<br /> � � � y g TM 1201 Third Avenue,Suite 600 I
<br /> ' stage shall have a user definable {adj.) minimum runtime. TS P - H P - 1 : Seattle,WA 9810�
<br /> Freeze Protection:
<br /> ' The unit shall shut down and generate an alarm upon receiving a freezestat status. DP FZ
<br /> 3 The cooling shall be enabled whenever: � 3 DUCT t� 206.448.3376 ,
<br /> - • Outside air temperature is greater than 60°F (adj.). H T T DIAMETERS H H f�206.448.4450 i
<br /> Return Air Smoke Duct Detection: '
<br /> ' The unit shall shut down and generate an alarm upon receiving a return air smoke detector status. � AND the economizer(if present) is disabled or fully open. Hw CC DX w � hargis,biz ,
<br /> • AND the supply fan status is on. OA � � � I � � SA ,
<br /> Smoke L�etection: � AND the heating (if present)is not active.
<br /> The unit shall shut down and generate an alarm upon receiving a smoke detector status. ' N.C. �• C�q,,_ �
<br /> , Alarms shall be provided as follows � I F ,�� _`�y,r�,,, I
<br /> • High Supply Air Temp: If the supply air temperature is 5°F (adj.) greater than setpoint. U I I �T ' .Q, C}
<br /> VFD '-..-
<br /> I . � AHU Optimal Start: I
<br /> � The unif shall start prior to scheduled occupancy based on the time necessary for the zones to reach their I ( �
<br /> occupied setpoints. The start time shall automatically adjust based on changes in autside air temperature, Economizer: i
<br /> The controller shall measure the mixed air temperature and modulate the economizer dampers in I F �
<br /> zone temperatures'and day of the week. The outside air damper shall adjust full open or closed based on C � �
<br /> outside air temperature rela��ve to cumulative zone temperature. sequence to maintain a setpoint 2°F (adj.) less than the supply air temperature setpoint. The outside air HWR M ( I VFD `�7� �'
<br /> damper shall maintain a minimum adjusta�le position of 20% (adj.) open whenever occupied. HWS VF F ��� �'� / /
<br /> ; " CHR CHS ( ------------------- �'ft�t2 ,�'
<br /> , Supply Fan:
<br /> manded to run unl�ss shutdown on safeties. To revent The economizer shall be enabled whenever: � �t
<br /> The supply fan shall run anytime the unit is com J } � p • Outside air temperature is less than the supply air temperature setpoint{OR 70°F (adj.), provide I __ _--,_ CS CT , �
<br /> short cycling, the supply fan shall have a user definable (ad�. minimum runtime. _
<br /> F
<br /> toggle} � _- _v � CT I q
<br /> � • AND the outside air temperature is less than the return air temperature. I = ____ �
<br /> Alarms shall be provided as follows:
<br /> • Supply Fan Failure: Commanded on, but the status is off. • AND the supply fan status is on. I
<br /> The economizer shall close whenever: I NEAT PUMP C2 ' '
<br /> CONTROL PANEL HP < � z m �
<br /> • Supply Fan in Hand: Commanded off, but the status is on. . Mixed air temperature drops from 40°F (adj.)to 35°F (adj.).
<br /> • Supply Fan Runtime Exceeded: Supply fan status runtime exceeds a user definable limit (adj.). I �
<br /> • Su I Fan VFD Fault • OR the freezestat(if present) is on. `�--------------�--'--------J � c1) H
<br /> pp y • OR on loss of supply fan status. (t� -i
<br /> � � . . . . . �� . . � . . � ... � �------ -._.__._ .. ._._--------________. ---�-----_..________--------�----------_------ ---'��_ . -------------- -----___-, , H � .
<br /> ,
<br /> � Supply Air Duct Static Pressure ControL !����"� __ _______ _ ___ ���s �W��8 � � Z °C '
<br /> e s re ulti le duct static ressure sensors and avera e sensors and modulate the
<br /> The outside and exhaust air dampers shall close and the return air damper shall open when the unit is off. ' r --I-�--- --T � -1- -}---�-Jj- --i� � ---� ----� ' --��� �-�"����- -------- �--�--�� ----��--�-��-�-�-���' w � w
<br /> The controller shall m a u m p p 9 . . . . �____� , Pt�t N�me _ _ ;-----trAAfK---�--AI ��AO i_�__�_�_�_A�__, _�_r���_�.__?r�-� � ; � - �-----�8-- a u- a-
<br /> �su 1 fan VFD s eed to maintain a duct static pressure setpoint. The speed shall not drop below 30% If optimal start is initiated, the mixed air damper shall operate as described in the occupied mode except � PP y ^� -"�-�-�T""-"T-� -^T- ��" -�, } � � T ` fi � ! X r � X �� AVG SPS �
<br /> PP Y P , , �_Su __I__ Air Static Pressure SPS-S X _ _-----_ ___._-1------- X '
<br /> (adj.). The static pressure setpoint shall be reset based on zone cooling requirements. I
<br /> that the outside air damper shall modulate to fully closed. ;, � ___.__---- --------__---------------------___.�_.______-------�------ � �.__ _.,____.--�._..._.�_____-------,---,�-,-----------,-----�-------____.-------
<br /> . , �Return Air Static Pressure � __SPS-R_'_;__X _ I � � i � I X � X � X WORSE CASE SPR �p
<br /> • ThE initial duct static ressure set oint shall be 1.0" H20 (adj.){All boxes at minimum} +
<br /> . „ .- Minimum Outside Air Ventilation - Carbon Dioxide CO2 ControL f RA Differentiol C � �A ' r
<br /> � _-p --- - , - + + - .____ __.___.__ _.__T.___ __ ._-_� , `o ,-+
<br /> i �-_ —__� - - ;------ - ----_ �-
<br /> P P j
<br /> • As coolin demand increases the set oint shall incrementally reset up to a max. of 1.8 H20 (ad�.). � � �_______ _ arbon Dioxide PPM � RACO2 � X _ � � _ _�__ _!_ _ ; ; X �
<br /> ----- ---------__-----_�_--------- -____- ---, ___ _ __ _}- ___._. � -----1 _ _ ___._____ w ,-{ �
<br /> ' g � p o a min of 1.2" H20 ad'. . When in occupied mode, the return air differential CO2 sensor shall measure the CO2 levels and modulate Prefilter Differential Pressure i _ DP ( X j � ; i � X I � � �j ~' o�o �
<br /> . ' ' hall incrementall reset down t "
<br /> As cooling demand decreases, the setpoint� Y ; � 1 ) . . . . . . . �---.--------- _..--------- - ---- -._-----_.,___.____. ------- ------�----�_� ________�._.__�__-,---- ----,--._.______r_---.__.- -;--------- .-----------.____ ______._------_.--------- Q � `.
<br /> the outside air dampers open on nsing CO2 concentrations and closed on decreasing CO2 concentrations, j
<br /> • (Mixed Air Tem TM � X � ` I ' � � �' �
<br /> Alarms shall be provided as follows: , . . . � � �...___ ---�____ _-P-----__-----_ ------�------____� _------------'---�� I ____. X X .____ i_______------------
<br /> . I air static ressure is 25% ad . reater than setpoint. overnding normal damper operation to maintain a CO2 differential ppm setpoint (adj.) of 60Q ppm. � i r --}----�- �-------�------�r--------�----------------- -------- -r
<br /> High Supply Air Static Pressure: If the supp y p ( 1 )9
<br /> � Return Air Tem TR X I i X X �
<br /> � . . o . Provide with 10 min. (adj.) delay before overrfde occurs. CO2 differential ppm setpoint shall be offset a � _,______-___P____ _____��-___-_� `-__ �_}______ __I_______�_ _ ' _______..^_____�_____ •
<br /> • Low Su I Rir Static Pressure: If the su I air static ressure is 25/o E�d'. less than set omt. . . , I� t�----�-- � �---- ---�- -^_�� T '
<br /> PP Y PP Y p �" 1 ) P --� _ } __._ � � �
<br /> minimum of 100 p pm (ad j.) above outside CO2 level set point. I�upply Air Temp _ ____�__ �_ _ __ � __ _ TS_ ___� X _i � � I X I X , z
<br /> r-.------._.__r.__._____.,__�,___.__i.----_. __
<br /> ___ _ ___ _ ___ __ __�_____:�y-_A�-1
<br /> _P P� Sp e e d V F D S S � � X � i � X j �X__ I
<br /> Return Fan: n f a n V F D s h a l l m o d u l a t e i n u n i s o n with p . Return Fan VFD � - ' , � � v �
<br /> Alarms shall be rovided as follows: _-__�� ___________._-_ -_._____.___�-_-� _ ____ __ ___ __ _ _ _ _
<br /> (Su I Fan VFD __ ____ __ _
<br /> The return fan shall run whenever the su I fan runs. The retur � � � J � _ (
<br /> --------___> s�ed _ � vFORs � I� x� � i � � x - -!-- ---'�------ —X----- -- -�- ----- --------, ,
<br /> �--- -
<br /> pp y • High Return Air Differential �02 Concentration: If the return air CO2 concentration is greater than � -------- --_----i--------�-----;_ _ ___._�__._1_______ � ___'_ ____ __e --_- I f �
<br /> the supply fan VFD. The return fan VFD shall not exceed the supply fan VFD and shall have the capability o �-- --_9 ----__�.___---______.____.__�___- _--�_____._____.___-- - I-_--.-- -_--- _:_._-.--_-_- ----__-----I-----------i_-----_� ---_X-_-�----I -_-,--_------_._�
<br /> " of tracking at 80% (adj.) of the supply fan VFD speed. Primary mode of controlling return fan VFD shall be 10/o ppm above setpoint(adj.). !Hc,dtin Valve VH , X
<br /> -
<br /> r � i X r -�-
<br /> �Outside Air Damper-- --------------- I -- --��-----�--- X,------� I� x � f X I
<br /> .:: . . - -- -------� � _� . �-------
<br /> throu h return air duct static ressure. Provide to ie on screen to switch between two modes. • Hi h Zone CO2 Concentration: If the zone air CO2 concentration is reater than 10% m above �- �---- ^--" - �" �"�- t� --�- 1-�-�^I -
<br /> -----._ _.____ --- . __,
<br /> ; g p gg g g PP Mixed Air Dam ers DR & DE C X � � X � � X DR = 100�-DE
<br /> � i P_---------- --- ---- --- ---� ---� - �--- ----
<br /> _ __�__------_ _._.
<br /> setpomt(adj.}. �-- --� --- - - - �-- --- --�__ _ _ -- ---_`_--- - __ �---_-----
<br /> - Freezestat FZ � � X I � � X �-- X X �----------------� �
<br /> Alarms shall be provided as follows: . Differential CO2 sensor failure. I-_.__� _-_._�.__�--�--�-_ _ - -� _ .---�--_�. --- �- - � � �__..----_ .___._...�_!--_______i...__.v__._.'__�____.�___.___.___ ___ r n � �
<br /> � • Return Fan Failure: Commanded on, bat the status is off. ,
<br /> � l ' • is on. �Cooling_Valve_
<br /> ---- _ _ -- __-CC- --I__ � x , �_.�.__. _.__.�__ _� X _ � X�._"._----X-------�----__. -------___ v z
<br /> r-- - __------_ ___- - -,---- -_j ---- - ---- � r ^ .
<br /> • Return Fan in Hand. Commanded off, but the status `Return Ai� Smoke Detector SDR X �- � r i
<br /> : Filter Differential Pressure Monitor: �_____�------------ ---------- -----;------------��--_�__�: __I__----+-----�--____�._------�-X---�X---!_--__.__X-----.�---------�____---- z � � l
<br /> • Return Fan Runtime Exceeded: Supply fan status runtime excseds a user definable limit (adj.). ` , � j
<br /> The controller shall monitor the differential ressure across the filter. I Supply__Fan_VFD Fault ___ __ __ _ ___ _ ! ___ _VFDSF � X__ I_ ______� _ _ � __ � ______ _ _ _ _ _ _____ X X
<br /> • Return Fan VFD Fault p C r � ,- � � _ _ ___..__�____.-___.__.___.__... .. _ Q �
<br /> � �
<br /> Supply Fan Status w/Amp Draw j FS r � X 1 � f � X � ( X (_ __._�-.--_.__.__-------i
<br /> Alarms shall be rovided as follows: �- - _ -------- - �----t- -----_!__ ---•- ---�----_; I.-- -------- ----------1---___�__----------- --- -- ----- ------------__{ I � � Q
<br /> p i Return Fan VFD Fault J�_ � �---- VFDRF ---- � � X � ( �
<br /> Return Air Duct Static Pressure ControL• • Filter Changer Required: Filter differential pressure exceeds a user definable limit (ad�.). �_-___�______-__._�_____._______ _...__ _.______ _��______-L___-_ X____�_____� I__-__i _____________�_r-__-.-__. �---_._-_--_.-_---.---_ r H
<br /> The controller shall measure multi le duct static ressure sensors and average sensors and modulate the (
<br /> .
<br /> Return Fan Stafus w Am Draw � FS � X r i � X !- ' �
<br /> , .X ( ----�------------------
<br /> I � � � �
<br /> P P
<br /> � ---____.-------___/_�_ __________-----_.� I ► _---_�._.---._--�--------------1------------�--.----- --- -. _.� ____ _______ __ . I � Z %' {j
<br /> return fan VFD speed to maintain a return duct static pressure setpoint. The return fan VFD speed shall � �
<br /> __.___-------____.
<br /> �.__ � �._____ 1 X �-_ _ X C � � �,/
<br /> Mixed Air Temperature: 4 Su I Fan Start Sto________ � FE i l X � � � � '-
<br /> 1 L
<br /> I___PP Y -____---�_.__P -------____.__ - ---------�---_� -__ _-_�___---'--- ' � - � - �- � ;- - - � � � O 1_ �
<br /> not drop below 20% (adj.). The controller shall monitor fhe mixed air temperature and use as required for economizer control (if �Return Fan Start/Stop FE � ' � j X � � � i � X i � ` X � � '_j � � ,,/ � '
<br /> • The return duct static pressure setpoint shall be 0.03" H20 ad . . _.,__._..__ `____�._____----A-`---__.____. �-___._.___._.____._�_______ ___. �____._r__..____ _-__.____ .,_-_--_-- - ---__.-_---_.____.__....__-_-.----.� = I..L. � /� .
<br /> � � } resent or heatin control if resent ( � �v � : i � v� �
<br /> p ) g { p )� �Supply_Air_Static Pressure Setpoint .__-__ __) SPSSZ � � � ' � � X :, ( `---`_--,---___�___ X � � � („� V 1 '
<br /> . r---___.___-_ _-- �------___ -— _-- �
<br /> Alarms shall be provided as follows: -- ---- - _
<br /> Alarms shall be provided as fol lows: � ____._ i_.______. ____ � ; _ .___�_�. � _ _ �__ ___ __. _ �
<br /> , �- - �_ �._____,_ �
<br /> • High Return Air Static Pressure: If the supply air static pressurs is 100% (adj.) greater than setpoint. f Return_Air_Static Pressure Setpoint_______1, ___ SPSRZ��, �, i � ` � � X_ � � I p z W
<br /> o • Hi h Mixed Air Tem If the mixed air tem erature is reater than 90°F ad ----� ---------�-� � r-�� -. �__ I X __�_____ , ,
<br /> -r---- ---�---------------� _ � �
<br /> . . , - � . --- -
<br /> • Low Return Air Static Pressure: If the supply air static pres�ure is 100/o (adj.) less than setpoint. g p� p g � 1•}� �Su I__Air_Tem Set_oint � TZ I ' I X � � � , � �
<br /> • Law Mixed Air Temp: If the mixed air temperature is less than 45°F (adj.). �----�py - --p P ----------;---- �___ _____ i i_ �___X X I � N � H
<br /> � __;--�-- � _�- --;---r --; --- _ Z � � �
<br /> _ _ _- � - ----
<br /> ,Economizer_Mixed Air Temp Setpoint_____li _DMZ _(_ --I ' X E--- X--- X F--1 �� �
<br /> _--�-------____�__- _----� --_�----- -----1------ ------ - ---- ---_.� � ,-,
<br /> • • ' ' intain its �RA Carbon Dioxide_PPM_Setpoint- -----------�--- RACO2Z--�------� ----�-------- ----!----X-- �---}�--------l---X------- ----+--- -----x___----�-------------- � ~ �
<br /> Heatinq Coil Valve:
<br /> The controller shall measure the mixed air temperature and modulate the heatmg coil valve to ma Return Air Temperature.
<br /> , o , , , . . � ;Schedule SCH�D r � I � I X � � Q I-"'� � >
<br /> setpomt 1 F (ad�.) less than the supply air temperature setpomt. The controller shall monitor the return air tem perature and use as re quried for set point control or --.-____._ _______r___�.___�.__.___.______ ____�____ ___.___-___._�..____J{�.______�___...__7__..___ .__-�_.__._ _________�______________._{___.____.______.._._._.__�_.____.____.___ �/ �
<br /> ; economizer control (if present). _ �High Supply_Air_Static Pressure ___.._.�__.__��__�___.______�_-----I j - - � ____-�---i_�_.._.�_._----_ .---...._..__.._.__X_.._._!._--.----__-----------.__._�__.___..___._.._..�__.__� LG. �,�..�
<br /> The heating coil sha l l be ena b le d w henever: r � � (� � ( � '
<br /> . Low Su I_ A�r 5tatic Pressure_----_� -�- - � �- -�----- -�___� � ---._l _----�--- -____ �- ---�=---- � _--- - �---. X ---! - ---------_____�.---- _____--:---- -.� W (� N I ..
<br /> Alarms shall be provided as follows: �_-- - PP� --- '_.-__� � � � O
<br /> • Outside air temperature isJess than 55°F (adj.). � I Hi:�h Return Air Static Pressure � � � � r X
<br /> j • High Return Air Temp: If the return air temperature is greater than 80 F (adj.). � __� ___.-_-_-___-_. _�. ___ __ ____1 _ ' ( i I � , ,
<br /> • AND the economizer if resent is disabled. i --{ ' -�---- ---�--- �__�____-__.�.__ - �
<br /> � p ) • ° rLow Return Air Static Pressure � � � ___� � � � I X � ^ � O �
<br /> . • Low Retum Air Temp: If the return air temperature is less than 65 F (adj.). � __� ____� ___ _____ __� _____._a_______ . __ __. ____ ; � �
<br /> �_. . ,._ _��__ ---
<br /> • AND the supplyfan status is on. Su I Fan Failure � �-�--� --- ! ��^W_�I--u� .J- --�_ �' -X ---��� _`__�___._� __ _._._. ___ ______ 0- �
<br /> OR �_PP Y- -- - --- ------ --- _ _i_ . - - ---- -- �__--' � ---
<br /> � • Outside air tem erature is Ipss than 70°F ad'. . Supply Air Temperature: r � j �� r ' r � ^ � ! ' i
<br /> (Su I Fan in Ha ! ; , _; ,
<br /> p , � 1 ) __PP Y ---___-_nd— --- -------i---------- I ___--_ __- ( _- ! ( .i__-X_-- ' , .
<br /> --- ___�
<br /> ( � ----___ _-- _ __--_ __ ----- _ -_----- ----
<br /> , � � } � �
<br /> _ : • AND system is under��timal start. ,,. The controller shall monitor the supply air temperature. �Supply_Fan_ Runtime Exceeded � � _ � __ _� __ �_ __�_ _; ; _' j X � � i
<br /> - --------- - ----__ _._._ _ __.__.______ �__________ __----- -; r , �------- - - - - ---- ------ - - ------ --- --- ,
<br /> The heating coil valve shall open for freeze profection whenever: Alarms shall be provided as follows: �
<br /> . a o __--- _ _
<br /> _._._ _.__ _
<br /> Return Fan Failure , � � ( � � � � � '
<br /> • Mixed air tem erature dro s from 40 F to 35 F ad�. . ��__-__�__--,___.-___ � _.__� �.___X _, _______�_�fi__ _ __�___�
<br /> , _� -
<br /> - --'----
<br /> ----- ---___--- ----� - - - 1 �
<br /> r
<br /> , p p � � } • Hi h Su I Air Tem If the su I air tem erature is reater than 120°F ad�. . • i � � � T ' � ' � •
<br /> _ • OR the freezestat(if present) is on. g pp y p' pp y p g � � � Retum Fan m Hand � � �
<br /> � �--- -__-_- - -- �_ _____! _ ___1--- - --� _ _-! -----, � --X___�------------�----__.__ -----------� '
<br /> . . • Low Su I Air Tem If the su I air tem erature is less than 50°F ad'. . --- --_______ �____ T 7 � ; ; � -- ; SH EET TITLE:
<br /> P P Y P� PP Y P � 1 ) Re turn Fan Runtime Exceeded _I__.__._r_.----._ __.---_ � I`__X___ �__-_-__-___-�-_____
<br /> Alarms shall be provided as follows. . -�-u ---�_�J J -----�--� -`- ---u J---J.'� _ _� _- ��- __. ��__._r________ �
<br /> �__. -
<br /> r-- � }- _-- -_.____..�._�____�
<br /> � • Low Su ply Air Temp: If the supply air temperature is 5°F (adj.) less than setpoint. j High_ Supply AirATem_ ________ I �- � I j � ;_ � i ; x �I ; � I�IIECHANICAL CONTROLS
<br /> r ___ ._��_------ ;----- ----�- __._____ ___------ -______—__---�- �
<br /> p Backup Power Mode- DX Heat Pump Condensing Unit Gooling & Heating : rCom_ p � C � r } � ' 1 ' i i AND SEQUENCES
<br /> ,` I____Pressor Runtime Exceeded _- _--- I I- � _f `_.1..___.__.._ � � X �
<br /> ;:, ' Supply Air Temperature Setpoint- Optimized: The heat pump shall be enabled only during backup power operation. The controller shall measure the t- -- ���-- --� � �-- -�-�T--�- -----�--�--��T------�-�
<br /> _____.�
<br /> _� �__ ,
<br /> , . , k . . . . . . . . '�Low S ' � __. _- - �-X----� ---- 1
<br /> The controller shall monitor the supply air tempera�ure and shall maintain a supply air temperature setpomt zone temperature and cycle and modulate#he variable speed compressors to maintain the supply air , upply Air Tem � � � i I � � � ' � '
<br /> - --P _____..__--- ---____ �
<br /> . . . �._---- ------�---_. ---
<br /> __�__ ______�_
<br /> _____._� __._ �_�_�
<br /> �- � C � --- ----------
<br /> . . To revent short c clin the co II have r defin I '. �H�gh RA Differential_CO2__Concentration _ _; � X l v �
<br /> reset based on zone coolmg and heatmg requirements temperature setpoint p y g, mpressors sha a use ab e (ad� ) � , _ ---_-, _.___!_ _J ____� ____E______� __ �_ _._�.__ ___.__________. __�._.________1__ _ _.- �__ __._i________.____.. �__
<br /> minimum runtime. The compressors shall run subject to its own internal safeties and controls. D�j fferential CO2, sensor fa�lure 1__� ' __� ___��____ _� _____ L_ X __ _� � i
<br /> The supply air temp setpoint shall be reset for cooling based on zone cooling requirements as follows: ' ^� � ~ ^ � � ^ :
<br /> -- �
<br /> f - __._ �-----
<br /> . . . . . o • . __...___ - - - - -..__, I }1_� - ---'- __...}_- -----� -+--- _ __+- _ �.._ _
<br /> �Filter Chan e Re uired � � , � � � X !� X (
<br /> � . �--q_� �____,_______. _- --___ C______ ___. !__----
<br /> • The initial supply air temperature setpoint shall be 58 F (adJ.). The DX cooling shall be enabled whenever:
<br /> ---__�. ____.___
<br /> _ __.
<br /> . rHigh Mixed_Air Tem�-----------__---------__1-- _.-- ----- - -------� �---- -_� -__..-� - �--._.-- -_i-___X_.__�__._ ..--- ___ � '
<br /> • As cooling demand increases, the setpoint shall incrementally reset down to a minimum of 55°F (adj.). -1--- �-- - � � ----� � �- ---- �
<br /> • o • The ECDC h dronic heatin and coolin lant has failed. '
<br /> �---- _ � 1 _�__ ___ ___. _--j �
<br /> ' • As coolin demand decreases, the set oint shall incrementally reset up io a maximum of 72 F (adj.). y g � p o Low Mixed Air Temp'__ _ __ ____ ______ I ___ ____:___, ,___________, ______ ____,.i � ' X i
<br /> {- -_;--______
<br /> g p • AND #he outside air tem erature is reater than 60 F ad � � ' � � � `^�^�^�� � �!� � ��� �
<br /> . ____
<br /> ____.__
<br /> �
<br /> ' oolin then the su I air tem setpoint shall be reset for heating as P 9 � J•)• �High_Return .Air Temp-_----__ ----.�--_�___-.---_-,--_-_'- __.��___.___._ ,__..__- �-_-_____.. ._.._;_.__-__�__ __-_-_ _ .__..___.__'- -.._ X__�_�.'�_ _.__.__ __ _ _ i
<br /> If more zones need heating than c g, pp Y p � -""--�-��"""-�" ! 1 '� � � � � DATE: 04 08 16
<br /> . • � �� p ) � Y p Low Retum Air Tem_ _ � � ` _ '______..�------�------�_- --'-___---_,__------- --_- __.___-- --- __---- ;.
<br /> follows: AND#he economizer if resent is disabled or full o en. f �
<br /> . o • � �------� i i � , ;— -� r-_ 1
<br /> • The initial supply air temperature setpoint shall be 55 F (adj.). • AND the supply fan status is on. p------- ---------- �-�-� �--��-����-�-�----�------ I X I � �
<br /> . �Hic�h Supply Air Tem � i i X I ,
<br /> . . • o �--- � 1- �-___�.____�__.---) ____-{_—� I �
<br /> ; • As heating demand increases, the setpoint shall incrementally reset up to a maximum of 85 F (ad�.). . AND the hydronic coil valve is closed. Low Supply Air Temp � �� ---�___ _.____ ____ � X � � i�__��______._ i __.__X____�__�_._______.__.___._�__-__—____ JOB NO. . 1 4�08
<br /> ' • As heating demand decr�ases, the setpoint shall mcrementally reset down to a min�mum of 55 F . AND the heat pump chiller is not in the cooling mode. ` � �
<br /> , ------ �.._____ --------- --------- ---- ----_ ____ __ _.._
<br /> _ .�,_ ___ __ ___ �_. _ _ _--------
<br /> ° ,
<br /> Com_ressor Sta e 1 Stai-t Sto C1 � � (- _.._ _ . _�.^ _ .^ _ . _ __--_ _ .�� __ ---__-. �
<br /> (adj.). --- P.____ __ _�------__._/__.-P-----___---- C2 �._ �_ ;._. f_ X___I._ . �__ ___�_ �_. _ _� X � X �
<br /> - -_. - -- _. .----
<br /> _ _ �.-------- -�
<br /> Compressor Sta e_.2_Start Sto_ &_ Modulat X I i , __ _ i X i
<br /> _ .._ .._�_ _ __I_ ._P _ ___.. .-�.-----_.._____.__�I ,..._.__: ______.. ___._., .-.-- _---' ---�-_.______.��_ __---__.X__ .--. _� � ONE INCH AT FULL SCALE. '
<br /> The DX heating shall be enabled whenever: ���--�""- � + � ? fi4 ----� -t� ----T�--��--�_��-�
<br /> Heat Pump_Reversin _Vafve_Position � HP I ; t � I IF NOT SCALE ACCORDINGLY
<br /> . . -- 9 - – -- –__E__---- _ X , _ I X _ , I X � , �
<br /> • The ECDC hydrornc heating and cooling plant has failed. __._.___.i--. CS---1 f _-X i -_� _- -__-- � __ _ i __.__ � ____ ---____-_ _�._--._ _-.-�
<br /> �Com�ressor Status ----- I _ ,__ ____ ._ __ X � ,_ X � � '
<br /> . j _i._______ �_________ ,_------__.___ _---� ___; SHEET:
<br /> • AND outside air temperature is less than 55°F (adj.). � --- __�___ -------_ _ }_ __.__� � � � 1 ; � , _____� �---__��---__ , , .
<br /> -=- _I Compressor__Fan__Sto_tus .__ .__._.----___.___. I�_ ��._.---L___i_.___.__I_._X_.-'--�--�__.__-----!--___..---, x----__---.__-------------_X..__ _.___�__.___------_._.__.__
<br /> • AND the economizer(if present) is disabled. - 1--���- 1 � - - � I
<br /> � I
<br /> � .; • AND the supply fan status is on.
<br /> � ■ �
<br /> ` ----------------___--------------------------------------____----------------------�__--------------___----
<br /> -------------- ------------------------___-._---_______-___--_---------------------�_,�_-_------------------------------�--------------------------------------__--------- ----------------_.-._.�-=-------__.-- --------..----------------------__------------------
<br /> ; SHEET 53 OF 95 ', ;
<br /> I � „
<br /> ;
<br />
|