Installation
Operation
Maintenance
SpaceKeeper Console
Hybrid Heat Pump
SpaceKeeper Console (SKC)
Models: SKC 008-015
REV. 02
Table of Contents
1. INFORM ATION................................................................................................................................1
Ha ndling/Storage ..............................................................................................................................1
Weights/Dimensions/Clea rance s......................................................................................................2
2. INSTALLATION ................................................................................................................................3
Deli very Check List ............................................................................................................................3
Ins tallation Procedure ......................................................................................................................3
3. OPERATION ....................................................................................................................................5
Boa rd Description .............................................................................................................................5
Fan ....................................................................................................................................................6
Heat Operation .................................................................................................................................6
Cool Start Up .....................................................................................................................................7
Cool Operation ..................................................................................................................................7
Operational Algorithm.......................................................................................................................9
Thermosta t Connections .................................................................................................................10
Shutdown Output ............................................................................................................................10
Fault Ala rm Output ..........................................................................................................................11
4. COMMISSION & START UP.............................................................................................................1 2
5. MAINTENANCE.............................................................................................................................14
SKC-008 – SKC-015 Wiring Diagra m ..................................................................................................16
6. APPENDIXA (SKC-008 – SKC-015 DETAILS)......................................................................................17
Dimens ional Diagram: Complete Unit .............................................................................................17
Dimens ional Diagram: Chass is ........................................................................................................1 8
Dimens ional Diagram: Piping-a nd-Rece ptacle Pla te........................................................................19
Spa ceKeeper Cons ole: Hos e Assembly Connection..........................................................................20
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 1
INFORMATION
Handling
Care m us t be ta ken in ha ndl i ng th e Spa ce Kee pe r Cons o l e u n i ts a nd othe r a cce s s orie s
to ens ure tha t this e q u ip me n t doe s not s ustai n a ny da ma ge. I t is re comme nded that
the u ni ts be tra n sporte d i ndividua l l y on a two–wheel ca rt.
The protective s hi pping pa cka gi ng s houl d rema i n on the u ni t unti l i t is rea d y for
i ns ta l l a ti on. D u rin g constructi on , th e uni t mus t n ot be run and sha l l be s he l te re d
from contami n a nts a nd d e b ri s s uch as d rywal l dust, wood ch i ps, a nd pa i n t tha t co ul d
dama ge the fa n or b l ock the cool i ng/hea ti ng co i l which may resul t in dimini shed
performa nce .
Storage
The uni t mus t be s tored i n an u pri ght pos i tion a t al l ti mes .
Fa ilure to ma i ntai n the uni t i n a n uprigh t pos i ti o n ma y res ul t i n pe rman e n t da mage
to the uni t. Drop pi ng th e uni t or e xposi n g it to e xtre me s hock or vi bra tion may a lso
res ul t i n perma nen t da ma ge to the i nte ri or compone nts a nd p i pi ng.
The uni t s ha l l be s tored i n a non-corros i ve environme nt, shel tere d from co n di tions o f
extre me tem pe rature or humi di ty. Subje cti ng th e uni t to condi tions of this n ature may
res ul t i n s igni fi cantly reduce d pe rforma n ce , rel ia bi l i ty, and o pera ti o nal l i fe .
The uni t i s i n te nded for interi or u s e onl y a nd should be sto re d i n d o ors at a l l ti mes to
protect i t from the e l e ments a nd to hel p e l imi n a te the potenti al gro wth of i ndoor air
qual i ty (IAQ) conta mi n ants .
If i ndoo r storage i s n o t pos sibl e , th e e quipment ma y b e s tore d o u td oors duri ng the
s u mme r months onl y, i f the fol l owing provi si ons are me t:
1. The e q ui p me nt must be pl a ce d on a d ry s urface , or ra is ed off the ground in a
ma nn e r whi ch a l lows for a i r-circula tion b e nea th the u ni t.
2. A waterproof tarp mus t be us ed to cover the e q ui pme n t in orde r to provide
protecti o n from the e l eme nts .
3. Conti nuous ventil a ti on to the units mus t b e p rovide d to hel p pre ve n t mois ture
a ccumul a ti on o n the i nte ri or an d e xterior s urfa ce s. Mo i s ture b ui l dup on, o r
wi thi n the u ni t’s i ns u l ati on may res ult i n mi crobi al gro wth tha t ca n l ea d to
odors and s e ri ous hea l th-rel ated IAQ pro b lems .
4. The uni ts mus t b e s tored i n the i r ori gi n a l pa cka gi ng.
5. The i n d i vidua l u ni ts s hal l not be s tacked on top of one an o th e r.
6. If the uni t wa s previousl y i n use , e n sure that a l l wa ter h as be e n bl o wn out and
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 2
INFORMATION
tha t al l hose connecti ons a re pl ugged during s torage.
Weights/Dimensions/Clearances
Weight:
Model
No.
008
010
012
015
We i ght (lb) 160 160 165 175
Unit Dimensions:
Model No .
Uni t Dime n s i ons
(i nches )
L x W x H
Wa ter Con necti ons
Inle t / Outl e t
(inche s)
Fi lter Di mens i ons
(i nches )
L x W x H
SKC-015
48.0 x 12.0 x 25.3
½”
FPT
29.5 x 1.0 x
12.0
SKC-012 48.0 x 12.0 x 25.3 ½” FPT 29.5 x 1.0 x 12.0
SKC-010
48.0 x 12.0 x 25.3
½”
FPT
29.5 x 1.0 x 12.0
SKC-008 48.0 x 12.0 x 25.3 ½” FPT 29.5 x 1.0 x 12.0
See Appendix A fo r de ta i l s
Unit Clearances:
Ba ck: N/A
Ri ght: 12.0”
Left: 12.0”
Fro nt: 24.0”
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 3
INSTALLATION
Figure 1: Piping and Receptacle Plate
(See Appendix A for Further Details)
The fo l l o wi n g insta ll ation proce dures a re re commende d by th e ma n u facturer,
howeve r, it i s the re s pons i bi l ity o f the ins tal l i n g contra ctor to comply wi th a ll
a ppl i ca ble code s, l a ws , a nd regu l a tions of a l l re l eva nt governing a uthoriti e s ha ving
juri sdicti o n. Pl e as e re fer to Appe n di x A for furth e r deta i l s on th e i ns tructi ons
provid e d in th i s secti o n.
Delivery Checklist
1. Re move p acka ging a nd i n s pe ct the unit. Check fo r shi ppi ng damage or mate rial
s h orta ge ; fi l e a fre i gh t clai m an d noti fy your s a les re p re senta tive i f dama ge or
deficie n cy is fou nd.
2. Ve rify th e model .
3. Ve rify th a t the p ower s upply compli es with th e n a mepl a te s pe cifi ca tion.
4. Re i ns ta l l card b oa rd sl eeve on unit to protect durin g con structi on.
Installation Procedure
1. Thi s hea t pump un i t i s to be i ns tall ed wi th in a n i ndoor environme nt. Loca te
the u ni t i n an area where th e s urround i ng air te mpe ra tu re i s a bove 45°F (7°C)
a t all ti mes . Do not a ttempt to l oca te th e u ni t i n an a re a tha t ma y b e
s u bje cted to fre ezi n g condi tions .
2. Determine the mount l oca ti o n of th e h e a t pump unit i n acco rdan ce with th e
cl e ara nce s s pe cifi ed on pa ge 2, a s we l l a s the l oca ti o n of the bui l di ng’s wa ter
a nd e l e ctrica l s uppl y l i ne s .
3. Position the pi pi ng-a nd-re ce pta cl e pl a te
(figure 1) ove r the b u i l di ng’s suppl y, return ,
a nd co n den s a te flu i d lin e s . I ns ta l l i so l a ti on
val ve s on ea ch of the pipe s to faci l itate
remova l a nd s ervi ci n g of th e un i t i n the
future . Fl us h li n es prior to i ns tal l a tion of
hose s to the bu i ld i ng’s suppl y and return
l i nes .
4. The e l ectrical o utle t i s suppli ed a nd
preins ta l l ed i n the des igna te d ca vi ty tha t i s
i nclu d e d as pa rt of th e pi pi n g-and -rece pta cl e
pla te. The e l e ctrici a n mus t ta ke out the o u tlet a nd re i ns tal l a fter wi ri ng.
5. Wi th th e ele ctri cal connecti on co mple te , u se
me ch a ni cal fa steners to a ffi x the p i ping-a nd -
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 4
INSTALLATION
recepta cl e p l a te to th e fl oor, through th e two mo unti n g sl ots foun d on th e
l ower l i p of the pl a te.
6. Fi rml y gra sp the fro nt p anel cover o f the cons ol e and remove i t by l i fti ng i t u p
a nd a wa y from the he a t pump uni t.
7. Wi th th e front p anel cover re move d , lo ca te the th ree fl u i d hos e s th a t are
a ttached to the unit’s s uppl y, return , a nd condens ate conne cti on s . Ca re full y
remove th es e h ose s . The suppl y a nd re tu rn h os es h a ve swi ve l con n e ctors .
The condens a te hos e has a hose cl a mp.
8. Permanently a ffi x the threa d e d e n d of the sup p l y an d re turn hose s (NOT th e
s wi ve l connector) to th e b u i l din g’s s upply and re turn l i nes whi ch protrude
through the pipi ng-a nd-re cepta cle pla te . Sl ide conde ns ate hose over
condensa te l i n e a nd attach with h ose cla mp s uppli e d.
9. Position the he a t pump uni t a gai ns t the wal l a nd over the p i ping-a n d recepta cl e p l a te . Make sure to ce nter the u ni t a lo ng the ce n te r-l i ne marker
wh ich i s e ngra ved i n to the p l ate .
10. Th e th re e hose s tha t h ave be en a ffi xe d to the build i ng’s s u ppl y, re tu rn, a nd
condensa te p i ping s hould a t thi s poin t be acces s ibl e through the b ottom of
the h e a t pump unit. Us ing the s wivel connectors , re-connect th e s upply a nd
return ho ses to the a pprop ri a te loca tions on the hea t pump u n it. Attach
condensa te h os e to d rain pan o f un i t and atta ch with hos e cl a mp provid e d.
11. Next a ffi x the h e at p ump uni t to the back wall th rough the mounting hol e s
us i ng a p p ropri a te l y s i zed s crews . A scre wdri ve r e xten s ion ma y be re q ui red in
order to work a round the fa n. For pl ates wi th fres h a ir damper opti o n connect
the two wires wi th s pa de te rminal s from the unit to th e da mper te rmina l s.
12. I f further suppo rt is n e ces s a ry, two a dd i ti o na l mo unti ng ho l e s ca n be
a ccess ed by removin g the unit’s ca b i net co ve r. I n order to u n fa sten this
cover, two s cre ws – o n e l oca ted o n e ach s ide o f the unit – mus t b e re move d .
The two addi ti onal mounting hol e s wi l l be l oca te d i n the top l eft a nd ri ght
corners.
13. Connect the room te mpera ture s en s or to the e l ectrical p ane l a s i ndicated on
the wi ri ng dia gram. Pl ug the unit’s e le ctrical cord into th e s upply o utl et tha t
i s l oca ted be hi n d the uni t.
14. Re-atta ch the heat p u mp uni t’s ca bine t cover (i f a pp l i ca bl e ), a nd fro n t
pane l cover. I ns tal l a tion of th e u n i t is now comp l ete .
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 5
OPERATION
CAUTION:
To avoi d fou l ed machi ne ry, e xte n s ive uni t clea n up, a nd voi d warra n ty, do not operate
units wi thout a i r fi l te rs in pla ce, a nd do not operate u n i ts d u ri ng the cons truction
phas e .
The CGC Group H ybri d Hea t Pu mp provid e s ye a r round cooli n g and heati ng a s
controll e d by th e uni t the rmo sta t, o r by a dire ct di gi ta l control l er.
The Hybri d He a t Pump provi d es coolin g wi th a wa ter-coole d re fri gera tion circui t, a nd
provid e s he a tin g u s i n g a h ydroni c coil . Th e co mpres s or op e ra tes in the coolin g mo de
only a n d shu ts down during the h e a ting m ode - p rovidi n g fo r qui e ter ope ra ti on ,
extende d co mpres s or l ife, a nd a reduction in ene rgy consump tion.
To ens u re co rre ct operati on, cen tra l i zed e q ui pme nt l oca ted wi thi n the b ui l di ng
me ch a ni cal room is co nfigu re d to a u toma tica l l y provide e a ch hea t p ump wi th water
a t the a pprop ri a te temperature .
Board Description
The uni t’s el e ctronic ci rcui t b oa rd i ncorporate s s i x re l a y outputs w i th the fo l lo wi ng
functio n s :
K1 – Auxil i ary rel a y for cooling va l ve o n a two-val ve uni t, o r he a t va lve on a
dehumidifi cation uni t.
K2 – H ea ting Rela y
K3 – Alarm Rel a y
K4 – Compres sor Rela y
K5 – Low Fa n or Fa n Re l a y for bel t drive units
K6 – H i gh Fa n o r Compre s sor #2 o n b e l t dri ve uni ts
Ea ch of thes e re lays a re connecte d in p a ral l e l to a green LED indica tor th a t lights u p
wh en th e rel ay is e nergize d .
The ci rcuit b o a rd i n co rpora te s d i gi tal inputs that are o p to-coupl e d to a 24V AC source.
Thes e ha ve a mber LED in d i ca tors locate d nea r the input l o ca tions wh ich are lit whenthe
i nput i s cl os e d . The inputs i ncl u d e :
High Pre s sure Swi tch
Low Press ure Switch
Hea t Cal l (W on thermos ta t termi na l )
Cool Cal l (Y o n the rmos tat termi n al)
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 6
OPERATION
Fan Call (G o n the rmos ta t termi nal )
Au xi l iary (A o n the rmos ta t termi nal )
Comp res sor s hutdown (24V AC s i gna l th ru O/O). Providi n g a conti n uous 24V
potentia l to O/O wi l l te rmi na te and prevent co mpres sor opera ti on. Thi s can be
use d for duty-cycl i ng, mi ni mi zing power cons umpti on during a n e me rgency power
peri od, or duri n g suffi ci e ntly low outdoor a i r temp e ratu re s whi ch al l ow for free
cool i ng – a l l whi l e ma i nta ining the h e a ting functi on.
Uni t s hutdown (24V AC s i gna l th ru A/O). Providi ng a conti nuous 24V AC p oten ti a l to
A/O wi ll te rmin a te and preve nt uni t opera tion. Thi s can b e us ed for a ni ght
shutdown. On both arra ngeme nts a si ngle 24V AC s i gna l ca n shutdown many units .
¼ VA i s re q ui red p e r uni t.
Fi nal l y, the board h a s four a na l og inpu ts wh i ch ca n re ceive si gna ls via th ermi s tors .
Thes e i n p uts a re a s fol lows :
Ta – D i sch a rge Air Tempe ratu re
Tr – Refrige ra nt Tempe ra ture
Tw – Outgoing Wa ter Te mpera ture
Co – Conde ns ate Le ve l
Ta , Tr, And Tw a re 10k Ohm NTP thermis tors , whi l e Co i s a 100 Ohm NTP thermis tor.
Thes e i n p uts d o not h a ve LED i n d i ca tors .
Fan
1. A fan ca l l on “G” of the thermosta t termi na l s trip acti va tes rel a yK5 a nd ca us es
the fa n to o pe ra te a t low-s p e ed o n multi -s pe e d uni ts.
2. A h ea t ca l l o n “W” o f the thermos ta t termi na l s trip wi l l al so ca us e the fan to
operate a t low-s pe e d. If the hea ti ng ca l l i s s ti l l pres e nt afte r a 10 mi nute
period, mul ti -s pee d un its wi l l s w i tch th e fan to high -s p ee d through the
a ctivati o n o f rel ay K6.
3. A coo l i ng cal l on “Y” of the th ermos tat te rminal s trip w i l l ca us e th e fa n on
mu lti -spe ed uni ts to imme diatel y s tep up to high-s p e e d th rough re l a y K6.
4. Fa n op e ra tio n i s termina te d whe n a ll ca l l s a re dropped.
5. Wh en th e fa n i s operating a t hi gh s pe e d, both rel ays a re e n e rgize d a long with
their a s s oci a te d LED i ndica tors.
Heat Operation
A cal l o n “W” for hea t wi l l a ctivate the fa n at l ow speed. It wi l l als o
s i mul taneous ly energi ze the hea t re lay K2 an d i ts a ssocia ted LED. The rela y K2
wi ll provi de 24V AC fus ed p o wer d i rectly to the h e at va l ve.
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 7
OPERATION
Cool Start Up
A cal l o n “Y” fo r cool i ng ini ti a tes a s eries o f checks pri o r to th e s tart up of th e
compre s sor. The se checks i nclu de :
a. Power ON time r – Compre s sor operation i s de l a ye d fo r a pproxi mate l y 5
mi nu te s a fter re sto ra ti on of powe r. Thi s p reve n ts al l uni ts from coming
on-li ne a t the s a me ti me wh e n power i s restore d. It a l s o pre ve nts
compre s sor jol ti ng i n ins ta nces of i nte rmi ttent p ower.
b. Anti-Recycl e ti mer – Th ere is a 5-mi nute a nti -recycl e del ay ti me r tha t
a l l ows the re frigerati on cycle to a chi eve p res sure e qua l izati o n s o that
the co mpres s or i s u nl o aded upon s tart up.
c. High Pre s su re Switch – The high re fri gera n t pre s s ure s witch m ust b e
cl osed pri or to s tart u p. LED 11 wi l l be ON. Hi gh press u re s wi tch opens a t
600 ± 10 p si a n d clos es at 450 ± 10 p s i.
d. Low Pre s s ure Switch – The low pres s ure s witch opera te s pri ma ri l y a s a
l os s of ch arge prote cto r. It must be clo s e d for compres s or s ta rt up a n d
i ts LED 12 wil l be ON. Upon s tart up, the s igna l from the lo w pres s ure
s wi tch i s i gnore d for 5 mi nutes. I n s ome s ituati o n s, pa rticul a rly whe n
the u ni t i s col d, the pre ssure swi tch wi l l o pe n during s tart-up. If the
s wi tch does n o t clos e wi th i n the 5 minute ignore period, the compres sor
wi ll imme dia te l y be turned off. Low press ure s wi tch o p en s at 60 ± 3 psi
a nd cl os e s a t 90 ± 3 p s i .
e. Ai r temp e ra ture sens o r Ta – Sens or Ta wi l l prevent comp res sor s ta rt-up
i f the a ir flowi ng throu gh the uni t is be l ow 55F. The s en sor will a lso
prevent th e co mpres s o r sta rtu p or di sconti nue compres s or opera ti o n if
the a i r te mpe ra ture i s above 140F a nd w i l l re s e t at 135F. A flas h co d e
of 4 wil l be i n i ti ate d on the red di a gnos ti c LED 15.
f. Water te mpera ture s e n sor Tw – Se nsor Tw wil l prevent compress or s tart-
up and trip a n ala rm (a fl a s h code of 3) i f the outgoi ng flui d te mpe ra ture
i s above 125F a nd wil l res e t the a larm a t 120F. The s e ns or wi ll a l s o
tri p a t sta rtup a nd during ope ration if th e wa ter tempe rature is b e l ow
55F a nd will re set a t 60F.
g. Refrige ra nt te m pe ra ture s en s or Tr – Sens o r Tr wi l l pre vent co mpres s o r
s ta rt-up i f the coil tempe ra tu re i s belo w 40F a nd res ets a t 65ᵒF. A fl as h
code of 2 wi l l be i n i tia ted on th e re d di a gnos tic LED 15.
Any of th e a bove fa u l ts w i l l be i ndi cated vi a the d i a gnosti c LED a n d the
a ppropria te di agnos ti c fl a s h code . Ple a s e note the te m pe ra tures provided
mi ght va ry by ±5F.
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 8
OPERATION
Cool Operation
Monitori ng of the re frigerant cycle continues d uri ng ope ra ti o n of the
compre s sor. The fol lo win g malfun cti ons w i ll ca us e th e compress or to
s h utdown:
a. If the he a d pre s sure e xce e ds the s e t po i nt of the high pre s sure s witch,
the s witch w i l l o pe n a nd the control b oa rd wil l termi n a te compres s or
operati on withi n 10 s econds . At thi s ti me a fl a s h code of 6 wi l l be
i ni tia te d on th e red di agn o s ti c LED 15. Compress or operati on will b e
res tore d i n a ccordance with the “I ntel li gent Res e t Algori th m” (se e
bel ow).
b. If the s uction pres s u re drops be l ow the s et point of the low p res sure
s wi tch, th e s witch wi l l ope n ; i f i t re ma i ns o pe n beyond the 5 min u te
i gnore p e ri o d which is initi a ted u pon s ta rt up, compres s or opera ti o n
wi ll be termi na ted withi n 10 se conds. Compre s sor operati on wil l b e
res tore d i n a ccordance with the “I ntel li gent Res e t Algori th m”. A fl ash
code of 5 on the re d di agn o s ti c LED wil l b e initi a ted a t this ti me.
c. Intel l ige nt Re s et Al gorithm – If a l ow or h i gh pres su re s witch opens a nd
remai n s open for more tha n 10 minute s , a ha rd l o ckout wi l l be i n i ti a ted
a nd th e coo l i ng mode wil l be locked off unti l the controls a re ma n ua ll y
res et. At the s ame ti me th e fa ul t re l ay K3 wil l be se t to a la rm; howe ver,
i f the o p e n s witch cl os es withi n 10 mi nute s, a res tart cycle i s i ni ti a te d.
The re s ta rt cycle be gins wi th a 10 minute del a y after whi ch i f there i s a
cool ca ll i n p l a ce a nd a ll other en a ble rs a re wi th i n the sta rt para meters ,
the co mpres s or wi l l a gai n be put i nto operati on. Should e i the r of the
press ure swi tches open a ga in, the s hu td own p ro ced u re wi l l cycl e a ga in,
fol l owe d by a re sta rt. The i ntel l i ge nt res et algori thm will a llow two
open s wi tch s hutdown s a nd res tarts wi th i n a 24 hour pe rio d - a th i rd
s h utdown wi thi n 24 hours wi l l p u t the re fri gera ti on sys tem i n to a ful l
a nd h a rd lockout, requiri n g a power down to re s e t. I f two or l ess open
s wi tch s hutdowns o ccu r wi thi n a 24 hour p eri od, the y wi ll be e rase d
from memory and wil l not contri b u te to a future hard l o ckout. (A ha rd
l ockout wil l prevent compre s s or opera ti o n unti l the con trol s a re
powere d down for a t least 20 se conds a n d the green power l i ght goe s
out. A s oft lockout i s a co mpres s or s hutdown tha t wil l be re s tore d once
the co n di tion caus i ng the s hutdown returns to normal .)
d. During compres s or o p e rati o n, refri gera n t temp e rature, s ys te m fl ui d
tempera ture , a nd di s charge a ir te m pe ra ture a re conti n uous l y
mo ni tored. I f the refrigerant temperature d ro ps b e l ow 40F, co mpres s o r
operati on wil l be di s abled. After 10 mi nutes , a n auto rese t o ccurs and
the co mpres s or wi l l be e n a bl ed a s s oon a s the tempera ture ri ses a bove
65F. Actual co mpres s or res tart wi l l be de l aye d a mi n i mum of 5 mi nutes
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 9
OPERATION
by the a n ti-re cycle ti mer. A fl a sh co de of 2 wi l l be i n i ti a ted upon a l o w
refrige ra nt temp era ture s hutdown.
e. If the outgoing system fluid temperature ri s e s a bove 140 F, compress or
operati on wil l be di s abled. The compre s sor wi l l be ena bl e d a s s oon as
the te mperature d ro ps be l ow 120F. The o u tgoing s ys te m fl ui d sens or is
mo unte d on the le a vi ng fl u i d pipe. Actua l compress or res tart wi l l be
del ayed a mi ni mum o f 5 minute s by the a nti -recycl e ti mer. A flas h co de
of 3 wil l be i n i ti ate d upon a high o utgoi ng syste m fl ui d tempe rature
s h utdown.
f. If the discharge air temperature drops be l ow 40F, compress or o pe ra ti o n
wi ll be disa bl e d. The compressor wi ll be ena b l ed a s s oon as the
tempera ture ri s es a b ove 55F. Th e d i sch a rge a ir tempe rature s en s or i s
mo unte d on the fan h o us i n g. Actua l compres s or res tart wil l be de l a yed
a mini mum of 5 mi nute s by the a nti -recycl e ti mer. A fl a s h cod e of 4 wi ll
be ini ti ated up o n a l o w di s charge a i r temp erature s hutdown .
g. The condens a te level s ens o r is a 100 ohm the rmi stor that i s h e ated for
15 seconds e ve ry 4 mi nutes ; i ts te mp erature i s mea s u re d a t th e
beginning a nd end of thi s h e ati n g cycl e. I f the condens a te l evel ri s es
a bove the s en s or, i t wi l l n o t wa rm up during the hea ti ng cycle , and th e
tempera ture ch a nge wi ll be i ns i gnifica n t. I t i s this l a ck of te mpe ra tu re
cha nge that the control le r s e es a s a n i mpending conde ns a te o ve rfl ow.
Wh en a high condens a te l eve l i s d e te cte d, compres s or ope ra ti on i s
i mmedia tely te rmi n a ted, a nd at th e sa me time th e fa n i s s topped for 30
s e cond s , and then re s tarted. At thi s ti me a fla s h code of 7 wi ll be
i ni tia te d. The 4 mi n u te cycl e wil l continue until the co ol ing ca l l i s n o
l onger i n pl a ce . If the cond e nsa te l e ve l d rops b e l ow the s en s or,
compre s sor operati on wi l l b e re tu rn ed to norma l. Howe ve r, i f the
condensa te l evel s ta ys a bove the s ens o r for mo re th a n 15 m i nutes , th e
fa ult a l a rm wil l be trigge re d . Thi s fa ul t s igna l wi l l automati cal ly be
res et once the cond e ns ate l e vel goe s be l o w th e s ens or.
Note: The la s t fl ash code wi ll be ma inta in ed i n memo ry for one wee k or u n til the unit
controls a re p owered down. The fla sh code wi l l con ti nue unti l the proble m ha s cleared
a nd th e compres so r h a s bee n p u t i nto opera tion. If a cooli n g cal l i s i n p l a ce , it mustbe
dis enga ged be fore th e caus e of the la s t al arm s hutdown ca n be i d e nti fi e d.
Operation Algorithm
There a re se vera l co n trol a l gorithms to prevent cycling a nd pro bl ema tic operation.These
a re :
1. Doub l e Cal l – I f the thermostat connecti o n or s e t up i s incorrect res ul ting i n a
s i mul taneous ca ll fo r both heati ng and co ol i ng, the uni t wi l l not operate . This
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 10
OPERATION
conditi o n ca n be obs e rved on the thermos tat connecti on LED s . (Note : A hea t
pump the rmos ta t ma y cau s e thi s s cena rio ).
2. Re vers e Cycl e Call – Poorl y l o cated a uto ma tic cha nge o ve r the rmosta ts (i e .
thermos tats mounted on a wall o ppos i te a d i s ch arge gril l , or a the rmosta t i n a
doorwa y to outs i de) ca n tri gger h e a ting a n d coo l i ng mode cha nges many ti me s
a n hour. The CGC controll e r has a 10-minute a nti -mod e cha nge ti mer when
cha nging from cooli n g to hea ting opera ti on. The control le r wi l l not a cce pt a
cha nge in mode until 10 mi nute s ha ve e l a ps e d s i nce te rmina ti on of the
oppos i te ca l l.
Thermostat Connections
The CGC control b o a rd ha s be en de s igned to ope ra te with mos t sta n dard 24V AC
thermos tats . Thes e th ermos tats a re p o we red di rectly from the CGC board a nd provide
s i gna l s to the a pp ropria te te rmina l s d e p e nding on the o p e ra ti on at ha nd - He a t (W),
Cool (Y), Fan (G) or Aux (A). Whil e mo st present-day thermos ta ts a re compa tible withthe
CGC control boa rd, th e re a re o the rs tha t ma y not work properly. The foll owi ng shouldbe
checke d for s a ti sfa cto ry pe rformance pri or to i ns tall a tion:
1. Heat Pump The rmos ta t – Some h e a t pump units d o not h ave h e at re l a ys
(th ere fo re a re not compati b l e with s tanda rd th e rmos ta ts) and re qui re “H e a t
Pump Th e rmos ta ts ”. Thes e thermostats ca l l fo r b oth he a ti ng a nd coo l ing on
one of th e s igna l wi res . The s e the rmos tats a re comp l etel y i n compa ti bl e with
CGC’s controll e r.
2. Mercu ry bul b the rmos tat - This type is problema ti c but can b e us e d.
Un fortun a tel y, the a nti cipa tors a re a prob l em. He at a nti cipa tors mus t be i n
s e ries wi th a hi gh current re l ay o r va lve to function, s o do not perfo rm o n a n
el e ctroni c ci rcui t. Thi s wil l res ul t i n larger tha n norma l tempe rature swings .
The cool anti cipator, i f overs i zed, ca n bl e e d e n ough cu rrent to in di ca te a
cooli n g call even a fte r it ha s been termina ted.
3. Ba tte ry powe re d the rmos ta ts – Th e s e thermos tats were devel o pe d a s
repla ce ments for ol d mercury bul b the rmo s tats that h a d 4 wi re connection s
wh ile 24V e l ectroni c th ermos tats re qu i red 5 wi re s. The s e w i l l work with a CGC
board, a l tho ugh CGC does not recommend the m. They require peri o d i c ba tte ry
repla ce ment, w hich i s some thing that s houl d be avoi d e d i f poss ib l e .
4. Power s te ali n g thermosta ts – This type of the rmo sta t i s el e ctro ni c a nd wa s
a l s o de velo p e d as a re pl a ce ment for old mercury bul b thermo s ta ts . Thes e too
a re probl ema tic in tha t th e y ble e d a sma l l amou n t of current d own the s i gnal
wi res a n d thi s m ay be inte rprete d a s a si gna l for he a t or cool .
5. Tri ac s witche d controll ers – This i s a commonly used s witch i ng device a nd a ll
controll e rs te s te d to date h a ve functioned flawle ss l y. CGC recomme nds th a t
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 11
OPERATION
prior to i n sta l l a tio n of a thi rd pa rty suppli ed co n trol l e r, it b e che cke d for
compa ti b i li ty. CGC can confi rm thi s .
6. Re l ay s wi tche d contro l l ers – This type of co ntrol l er works we l l wi th CGC
device s .
Shutdown Output
The CGC boa rd has a n opti ona l input termi na l s tri p tha t al l ows for two type s of remote
s h utdown. The s e a re: a ) comp res sor s hutdown a nd b) u ni t s hutd own.
The a d va nta ge of the s e i nputs i s th at ma ny uni ts ca n be connected i n pa rallel and when
powere d by a n i n d e p end e nt 24V AC s igna l o ne or both of th e s e a ctions ca n be
i mple me nte d . Comm on u s e s are :
a) D u ty cycl i ng for d ema n d control
b) Gl oba l night s e tba ck
c) He ating o nl y m ode during e merge n cy power pe ri ods
The CGC controll e r i s a ls o set u p s o th es e s h utdown functi ons can b e i n i ti a te d
i ndivi d u a ll y with o n bo a rd 24V power. Thi s capabi l i ty a l l ows u n i t or compre s sor
s h utdown b a s e d on a door s wi tch, a li ght swi tch, or occupa n cy switch. A s epa ra te 24V
power s upply i s re q ui red i f two or more units a re be i ng shutdo wn.
Fault Alarm Output
The CGC boa rd i s provi de d wi th a fa ul t a la rm in d i ca tor a nd ou tpu t. Th e fa u l t ala rm
rel ay provide s n ormal l yopen and norma l ly clos e d conta cts fo r us e i n tra n s mitti ng
fa ult conditi ons .
NOTE: Th e fa ul t al a rm i s e nergize d for NORMAL, a nd de-energi zed for fault. As such, if
the u ni t i s not powered, i f th e boa rd fus e i s bl o wn, o r i f th e e l ectro n i cs a re da ma ged,
a faul t condi ti on wi l l be i ndi cated.
The fa ul t rela y i s pa ra l lel e d wi th the Fa ul t LED whi ch wi ll be ON when no fa ult
conditi o n exi s ts.
So me fa ult co n d itions in cl ude:
a . Hard l o ck out d u e to hi gh or l ow pres sure switch bei n g open for 10 mi nutes or
l onge r.
b. Ha rd l o ckout d ue to three hi gh or l ow pres sure s h utdowns in a 24 hour pe ri od.
c. Hi gh l e ve l con d e ns ate for a period i n e xcess of 15 mi nutes .
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 12
COMMISSION & START UP
System Flushing:
Proper s ys te m cl eani n g a nd fl us hi ng i s a n i mportant a s pect o f the commi s s i on i ng
a nd s tart up procedu re for hybrid u n its . En s ure th e s ys tem ha s bee n flus he d properl y.
Thi s prevents fo ul i ng o f the uni t’s hea t e xcha ngers.
NOTE: Hydroni c coi l s a re not 100% drai na b l e.
System Fluid:
Ens ure th at s ystem water te m pe ra ture i s withi n a n a cce pta bl e range to fa ci lita te s ta rt
up for cooli ng (80-120°F) a nd for he a ti ng (100 – 140°F).
System Water pH:
Sys te m wate r s hould have a neu tra l pH ba lance of a pproxima tel y 7.5 whi ch will
extend the l ife of the hose s , he a t excha n gers , a nd o th e r wa te r side a cces s ori e s .
Water Flow Rate:
Open a l l i so l a ti on val ves to the u ni t. With the uni t in opera ti on, e n s ure tha t the
enteri n g and l e a vi n g fl ui d temperature s are a ccepta ble . There is typica l l y a n 8 to 12
degree drop or ri se i n tem pe rature, de p e n di ng on whethe r the uni t i s i n he ating o r
cooli n g. Unde r e xtreme co ndi tions, sl ight vari a n ces i n the te m pe ra ture ma y be noted.
Freeze Protection from Water System:
Ens ure th at freeze p ro tection is p rovide d for the outdoor portion of the l oop wate r
s ys tem. Ina d e q ua te freeze p rote ction can le a d to coi l dama ge.
NOTE: A potenti a l i s s ue ma y a ri s e d uri n g cons truction where the s ystem fl ui d l oop is
drain e d after be in g cl e aned, flus h e d, a nd tes te d. Hybrid verti cal s ta ck u n i ts wi l l n ot
compl ete l ydrai n a nd may hold flui d i n th e co n d e ns e r o r hea ti ng coi l . Extensi ve
dama ge may re s ul t to i nte rn a l co mpone nts i f th e syste m flui d freeze s a s a resul t o f
i na de quate gl ycol bei n g pre s ent.
Remove Air from System Fluid Loop:
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 13
COMMISSION & START UP
Ai r in th e syste m i mpai rs uni t ope ra ti on a nd ca n caus e ero s io n i n th e pi p i ng.
Clean Unit Filter:
Confirm that the uni t fi lter th at i s bein g used i s cl ea n. A cl e a n fil te r contri b u tes to the
prope r opera tion of th e u ni t b y ens uri ng that the re i s a dequa te a ir flow a cross the
coil.
Fan Rotation:
Ins pe ct th e fa n s ecti on to e n s ure th at i t i s clea n o f a n y d eb ri s and th at th e fan
rotate s free l y.
NOTE: Th i s e q u i pme nt i s de s i gned for i ndoor ins tal l a ti o n ONLY.
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 14
MAINTENANCE
WARNING:
To prevent in jury or de ath d u e to e l e ctrica l shock or co n tact wi th moving pa rts,
dis abl e the uni t usi n g the di s co nne ct before s ervici ng.
Inspect Filter:
Es tab l i s h a re gula r ma i ntena nce s ched u l e. Clea n fil te r fre que ntl y a nd repl a ce a s
require d. A vacuum ca n be us ed to clea n the fil te r as well as the s urface of the co i l.
To re move the filte r, l i ft it up and out of the re ta ini ng l i p l oca ted towards the bottom
of the un i t. Repl ace the ol d fi lter by sl id i ng the top e d ge of a new fi l ter u p i nto the
ra ck, th e n pus h i ng i t i n be h i nd the reta in i ng l i p a t the bottom of the un i t where i t wi l l
drop i nto pla ce .
Check Fan Motors Annually:
Al l CG C Hybrid Heat Pumps a re p e rman e ntl y lub ri ca te d when shi p pe d fro m the fa ctory.
Do not oi l o r l ubri ca te the fan motors.
Visual Inspection:
Vi s ua l l y i ns pect uni ts and gi ve s peci al a tte nti on to hose a s s embl i es . Add re ss a ny
s i gns of d eteriorati on or cra ckin g and re p a ir l e a ks i mme di a te l y.
Amperage Check on Compressor and Fan Motor:
Check th a t al l e l ectrica l conn ects a re ti ght. Current dra w on thi s equi pment s houl d
not e xce e d normal full lo a d o r rate d l oa d a mps by m ore tha n 10 percent o f the val ue s
noted on the u ni t na mepl a te.
Safety Control Reset:
Al l CG C h ybrid hea t p umps i n clude high a nd l o w pres s u re s witche s to prevent th e uni t
from operati ng u nde r a bn ormal a nd p ote n tial l y harmful condi tion s . I f mul ti pl e
press ure al a rms o ccu r withi n a 24-hour perio d, the compres s or opera tion wi ll b e
permanentl y l ocked out until the u n it i s rese t o r powe r i s di s connected for 20
s e cond s .
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 15
MAINTENANCE
NOTE: If the h e a t pum p mus t be re s e t more th a n twice, che ck the unit for a d irty a i r
fi l ter, a bnorma l en te ri ng/l e a vin g wa te r te mpe ra ture , i nade q u ate wa ter fl ow, or
i ntern a l ma l fu nction s tha t may b e caus i ng hi gh or low press u re co n di tions . If the uni t
conti n ue s to trigger th e a larm, conta ct a trained s ervice te ch n i ci a n a nd e ns ure the
probl e ms are reso l ved be fore conti n ui ng use of the unit.
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 16
MAINTENANCE – STANDARD WIRING DIAGRAM
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 17
DETAILS
SpaceKeeper Console Dimensional Diagram: Complete Unit
SpaceKeeper Console Dimensional Diagram: Chassis
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 18
DETAILS
Dimensional Diagram: Piping and Receptacle Plate
Note: The fresh a ir damper mechanism is optional
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 19
DETAILS
SpaceKeeper Console: Hose Assembly Connection
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 20
DETAILS
SpaceKeeper Console: Hose Assembly Connection
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 21
DETAILS
SpaceKeeper Console: Hose Assembly Connection
Sp aceKe e pe r Cons o l e (SKC) – Insta l l ati on Opera ti on Ma i nte na nce Ma nual 22
DETAILS
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