CGC SKC-008 Owner's manual

Installation
Operation
Maintenance
SpaceKeeper Console
Hybrid Heat Pump
SpaceKeeper Console (SKC)
Models: SKC 008-015
REV. 02

Table of Contents
1. INFORMATION................................................................................................................................1
Handling/Storage ..............................................................................................................................1
Weights/Dimensions/Clearances......................................................................................................2
2. INSTALLATION................................................................................................................................3
Delivery Check List ............................................................................................................................3
InstallationProcedure ......................................................................................................................3
3. OPERATION ....................................................................................................................................5
Board Description .............................................................................................................................5
Fan....................................................................................................................................................6
HeatOperation .................................................................................................................................6
Cool Start Up.....................................................................................................................................7
Cool Operation ..................................................................................................................................7
Operational Algorithm.......................................................................................................................9
Thermostat Connections .................................................................................................................10
Shutdown Output ............................................................................................................................10
Fault AlarmOutput ..........................................................................................................................11
4. COMMISSION & START UP.............................................................................................................12
5. MAINTENANCE.............................................................................................................................14
SKC-008 – SKC-015 Wiring Diagram ..................................................................................................16
6. APPENDIXA (SKC-008 – SKC-015 DETAILS)......................................................................................17
Dimensional Diagram: Complete Unit .............................................................................................17
Dimensional Diagram: Chassis ........................................................................................................18
Dimensional Diagram: Piping-and-Receptacle Plate........................................................................19
SpaceKeeper Console: Hose Assembly Connection..........................................................................20

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i ntena nce Ma nua l 1
INFORMATION
Handling
Ca re mus t be ta ken i n ha ndl i ng the Spa ce Kee pe r Cons ol e uni ts a nd othe r a cce s s orie s
to ens ure tha t this e quipme nt does not s usta i n a ny da ma ge . I t i s re comme nde d that
the uni ts be tra n sporte d i ndi vid ua l l y on a two–whe e l ca rt.
The prote cti ve s hi ppi n g pa cka gi ng s houl d rema i n o n the uni t unti l i t is re a dy for
i ns ta l l a ti on . During cons tructi on, th e u ni t mus t not be run a nd sh a l l be s he l te red
from contami na nts a nd de bri s s uch as drywa l l dust, wood chi p s, a nd pa i nt tha t coul d
da ma ge the fa n or bl ock the cool i n g/h ea ti ng coi l whi ch ma y resul t i n di mi ni she d
performa nce .
Storage
The uni t mus t be s tore d i n a n upri ght pos i tion a t al l ti mes .
Fa i lure to ma i ntai n th e u ni t i n a n upri ght pos i ti on ma y res ul t i n pe rmane nt da ma ge
to the un i t. Droppi ng th e uni t or e xpos i ng i t to e xtre me s hock or vi bra tion may a l s o
re s ul t i n pe rma nent da ma ge to the i nte ri or components a nd pi pi ng.
The uni t s ha l l be s tore d i n a non -corros i ve envi ronme nt, s he l tere d from con di ti ons of
e xtre me tempe rature or h umi di ty. Subje cti ng the uni t to cond i tions of thi s nature ma y
re s ul t i n s ign i fi cantl y red uce d pe rfo rma nce , re l i a bi l i ty, and opera ti onal l i fe .
The uni t i s i nte nded for i nte ri or us e onl y a nd s houl d be stored i ndoors a t a l l ti me s to
prote ct i t from the el e me nts a nd to he l p e l imi na te the pote nti al growth of i ndoo r ai r
qual i ty (I AQ) conta mi nants .
If i ndoor stora ge i s not pos s i bl e , the e qui p me nt ma y be s to re d o utdoors duri ng the
s umme r months onl y, i f th e fol l o wi ng p rovi si ons are met:
1. The e qui p me nt mus t be pl a ce d on a dry s u rfa ce , or ra i s e d o ff the ground i n a
ma nne r whi ch a l lo ws for a i r-circul a tion be ne a th the uni t.
2. A wate rproof ta rp mus t b e us ed to cover th e e qui pme nt in orde r to provi de
prote cti on from the e l ements .
3. Conti nuous ventil a ti on to the uni ts mus t be provi ded to he l p pre vent moi s ture
a ccumu l a ti on on the i n te ri or and e xteri or s urfa ce s. Moi s ture bui l du p on, or
wi thi n the u ni t’s i ns ul ati on may re s ul t i n mi crobi al growth tha t ca n l ea d to
odors a nd s e ri ous he a l th-rel ate d I AQ problems .
4. The uni ts mus t be s to red i n the i r o ri gi na l pa cka gi ng.
5. The i ndi vi dua l u ni ts s h al l not be s ta cke d on top of one ano the r.
6. If the uni t wa s pre vi o usl y i n use, e nsure that a l l wa te r has b ee n b l own out and

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 2
INFORMATION
tha t a l l hos e conne cti ons a re pl ugged duri ng s torage.
Weights/Dimensions/Clearances
Weight:
Model
No.
008
010
012
015
We i ght (l b) 160 160 165 175
Unit Dimensions:
Model No.
Uni t Dime ns i ons
(i nche s )
L x W x H
Wa ter Connecti ons
Inlet / Outl e t
(i nche s)
Fi l te r Di me ns 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
Se e Appe ndi x A for de ta i l s
Unit Clearances:
Ba ck: N/A
Ri ght: 12.0”
Left: 12.0”
Front: 24.0”

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 3
INSTALLATION
Figure 1: Piping and Receptacle Plate
(See Appendix A for Further Details)
The fol l owi ng i nsta l l a tion p roce dures a re re commende d b y the ma n ufa cturer,
however, it i s the re s pons i bi l ity of the i n s tal l i ng contra ctor to compl y wi th a ll
a ppl i ca bl e code s, l a ws , a nd regul a ti ons of a l l re l eva nt gove rni ng a uthori ti e s ha vi ng
ju ri sdi cti on. Pl eas e re fer to Appe nd i x A for furthe r de ta i l s on the i ns tructi ons
provi de d i n thi s se cti on.
Delivery Checklist
1. Re move packa gi ng a nd i ns pe ct the uni t. Check for s hi ppi ng da ma ge or ma te ri a l
s horta ge ; fi l e a fre i ght cl a i m and noti fy you r s a l e s repre se nta ti ve i f dama ge or
de fici e ncy i s found.
2. Verify th e mode l .
3. Verify th a t the powe r s uppl y compl i es wi th the n a me pl a te s p eci fi ca ti on.
4. Re i ns ta l l ca rd boa rd s l ee ve on uni t to protect during constructi on.
Installation Procedure
1. Thi s he a t pump uni t i s to be i ns ta l l ed wi thin a n i ndoo r envi ronme nt. Lo ca te
the uni t i n a n a rea where the s urroundi ng ai r te mpe ra ture i s a bove 45°F (7°C)
a t all ti mes . Do not a ttempt to l oca te the uni t i n an a rea tha t ma y be
s ubje cte d to fre ezi ng condi ti ons .
2. Determi ne the mou nt l oca ti on of the he a t pump uni t i n accordance with the
cl e ara nce s s pe cifi e d on pa ge 2, a s we l l a s th e l oca ti on of the bui l d i ng’s wa te r
a nd e l e ctrica l s uppl y l i ne s .
3. Pos iti on the pi pi ng-a nd-re ce pta cl e pl a te
(fi gure 1) ove r th e bui l di ng’s sup pl y, re turn,
a nd condens a te fl ui d l ine s . I ns ta l l i sol a ti on
va l ve s o n ea ch of th e pipe s to fa ci l i tate
re mova l a nd s e rvi ci ng of the uni t i n th e
future . Fl us h l i nes p ri or to i ns ta l l a ti on o f
hose s to the bui ldi ng’s s uppl y a nd return
l i nes .
4. The e l e ctrica l outl e t i s supp l i ed a nd
preins ta l l ed i n the des igna te d ca vi ty th a t i s
i nclude d as pa rt of the pi pi n g-a n d-rece pta cl e
pl a te . The e l ectrici a n mus t ta ke ou t the outl e t a nd re i ns ta l l a fter wi ri ng.
5. Wi th the el e ctri cal conne cti on comp le te , u se
me cha ni cal fa s teners to a ffi x the pi pi ng-a nd-

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 4
INSTALLATION
re cepta cl e pl a te to the fl oor, throu gh the two mounti ng sl ots found on the
l owe r l i p of the pl a te .
6. Fi rml y gra sp the front pane l cove r o f the cons ol e and re move 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 the front pane l cover removed, loca te the three fl ui d hos es tha t are
a ttache d to th e uni t’s s uppl y, re turn, a nd conde ns ate connecti ons . Ca re ful l y
remove thes e hoses . The s uppl y a nd re turn hos e s ha ve swi ve l conne ctors .
The condens a te hos e has a hos e cl a mp.
8. Pe rma ne ntl y a ffi x th e threa de d e nd of the suppl y and re turn h os e s (NOT the
s wi ve l conne ctor) to the bui l ding’s s uppl y and re turn l i nes whi ch p rotrude
through the pi p i ng-a n d-re ce pta cl e pla te . Sl id e conde ns ate hos e ove r
conde ns a te l i n e a nd a tta ch with hose cl a mp s u ppl i e d.
9. Pos iti on the he a t pump uni t a ga i n s t the wal l a nd ove r the pi pi ng-a nd-
re cepta cl e pl a te . Ma ke s ure to ce nte r the u ni t a l o ng th e ce nte r-l i n e ma rker
which i s e ngra ve d i n to the pl ate .
10. The th re e hos e s th a t have be en a ffi xe d to the bui ld i ng’s s uppl y, re turn, a nd
conde ns a te p i pi ng s houl d a t thi s point be acce s s ibl e thro ugh the bo ttom of
the hea t pump uni t. Us ing the s wi ve l connectors , re -connect the s upply a nd
return hoses to the a ppropri a te l oca ti ons on the he a t pump unit. Attach
conde ns a te h os e to drai n pa n of un i t a nd atta ch wi th hos e cl a mp provi de d.
11. Ne xt a ffi x the he at pump uni t to the ba ck wal l through the mounti n g hol es
us i ng a ppropri a te l y s i zed s crews . A scre wdri ver e xtens i on ma y be re qui re d i n
order to work a roun d the fa n. For pl ate s wi th fre s h a i r dampe r opti on co nne ct
the two wires wi th s pa de te rmi na l s from the uni t to the da mper te rmina l s .
12. I f furthe r support i s ne ce s s a ry, two a ddi ti ona l mounti ng hol e s ca n be
a cces s e d by re movi ng the uni t’s ca bi net cove r. I n orde r to unfa ste n this
cover, two s cre ws – on e l oca ted on each s i de of the uni t – mus t be re mo ve d.
The two a ddi ti ona l mounti ng hol e s wi l l be l oca te d i n the top l eft a nd ri ght
corne rs .
13. Conne ct the room te mpera ture s e ns or to the el e ctri ca l pane l a s i ndi cate d on
the wi ri ng di a gram. Pl u g the uni t’s e lectri cal cord into the s u pply outl et tha t
i s l oca te d be hi n d th e uni t.
14. Re -atta ch th e he at p ump uni t’s ca bi net cover (i f a ppl i ca bl e ), a nd front
pa nel cover. Ins tal l a ti on of the un i t is now compl ete.

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 5
OPERATION
CAUTION:
To avo i d foul e d ma ch i ne ry, e xte ns i ve u ni t cle a n up, a n d voi d warra nty, do not op erate
uni ts wi th ou t a i r fi l te rs i n pl a ce , a nd do not ope rate uni ts duri ng the cons tructi on
phas e .
The CGC Group Hybri d Hea t Pump p rovi de s ye a r round cool i ng a nd he ati ng a s
control l e d b y the uni t the rmosta t, or by a dire ct d i gi ta l control l er.
The Hyb ri d Hea t Pump provi des cool in g wi th a wa te r-cooled re fri ge ra tion ci rcui t, a nd
provi de s he a ti ng us i ng a hyd roni c coil . The comp res s or ope ra tes i n the cool ing mode
onl y a nd sh uts down duri ng the he a ti n g mode - provi d i ng for qui ete r ope ra ti on,
extende d compres s or l ife, a nd a reduction in energy consumption.
To en s ure corre ct operati on , centra l i ze d e qui pme nt l oca te d wi thi n the bui l di ng
me cha ni cal room i s co nfi gure d to a utoma ti ca l l y provi de e a ch he a t pu mp wi th wa ter
a t the a ppropri a te te mpe ra ture .
Board Description
The uni t’s e l ectroni c ci rcui t boa rd i ncorporate s s i x re l a y outputs wi th the fol lo wi ng
fun cti ons :
K1 – Auxi l i a ry re l a y for cool ing va l ve o n a two-val ve uni t, or he a t va lve on a
de humi di fi cati on uni t.
K2 – Hea ti n g Re l a y
K3 – Al arm Rel a y
K4 – Compre s sor Rela y
K5 – Low Fa n or Fa n Re l a y for b el t dri ve uni ts
K6 – Hi gh Fa n or Compre s s or #2 on b el t dri ve uni ts
Ea ch of thes e rela ys a re conne cte d in pa ral l el to a green LED indi ca to r tha t l i ghts up
when the re l a y i s e ne rgi ze d.
The ci rcui t b oa rd i n corpora tes di gi tal i nputs tha t are opto-coupl e d to a 24V AC s ource .
Thes e ha ve a mb er LED indi ca tors l ocate d nea r the i nput l oca ti ons which are lit whenthe
i nput i s cl os e d. The i nputs i ncl ude:
Hi gh Pre s s ure Swi tch
Low Pres s ure Swi tch
He a t Cal l (W on th ermos ta t te rmi na l )
Cool Cal l (Y on th ermos ta t te rmi nal )

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 6
OPERATION
Fa n Ca ll (G on the rmos ta t te rmi nal )
Au xi l i ary (A on the rmos ta t te rmi nal )
Compres s o r s hutdown (24V AC s i gn a l th ru O/O). Provi di ng a co nti n uous 24V
potentia l to O/O wi l l te rmi na te a nd pre ve nt co mpre s sor o pera ti on. Thi s ca n be
us e d for duty-cycl i ng, mi ni mi zi ng powe r cons umpti on duri ng a n e me rgency power
peri od, or duri ng s uffi ci e ntl y l ow o utd oor a i r tempe ratures whi ch al l ow for free
cool i n g – a l l whi l e ma i nta ini ng the he a ti n g functi on .
Uni t s hutdown (24V AC s i gna l thru A/O). Provi di ng a con ti nu ou s 24V AC pote nti a l to
A/O wi ll te rmina te and preve nt u ni t opera ti on. Thi s can be us e d for a ni ght
shutdown. On both arra ngeme nts a s i ngl e 24V AC s i gna l ca n s hutdown many units .
¼ VA i s requi red pe r uni t.
Fi nal l y, the boa rd ha s fou r a na l og inpu ts whi ch ca n re ce i ve si gna l s vi a thermi s tors .
Thes e i nputs a re a s fol lo ws :
Ta – D i sch a rge Ai r Tempe rature
Tr – Re fri gera nt Te mpe ra ture
Tw – Outgoi ng Wa ter Te mpera ture
Co – Conde ns ate Level
Ta , Tr, And Tw a re 10k Ohm NTP the rmi s to rs , whi l e Co i s a 100 Ohm NTP th ermi s tor.
Thes e i nputs d o not ha ve LED i ndi ca tors .
Fan
1. A fan ca l l on “G” of the thermos ta t termi na l s tri p acti va tes re l a y K5 a nd ca us es
the fa n to o pe ra te a t l ow-s p eed on mul ti -s pe e d uni ts .
2. A hea t ca l l on “W” of the the rmos ta t termi na l s tri p wi l l al s o ca us e the fa n to
opera te a t l ow-s pe ed. If the hea ti ng ca l l i s s ti l l pre s e nt afte r a 10 mi nute
pe riod, mul ti -s pee d u nits wi l l s wi tch th e fan to high-s peed throu gh the
a ctiva ti on of re l ay K6.
3. A cool i ng ca l l on “Y” of th e thermos tat te rmina l s tri p wi l l ca us e the fa n on
multi -s peed uni ts to i mme di ate l y s tep up to hi gh -s p ee d through re l a y K6.
4. Fa n ope ra ti on i s te rmi na te d when a ll ca l l s a re droppe d.
5. When the fa n i s opera ting a t hi gh s pe ed, both rel ays a re e ne rgize d a long with
the ir a s s oci a ted LED i ndi ca tors.
Heat Operation
A cal l o n “W” for h ea t wi l l a ctiva te the fa n at l ow spe ed. I t wi l l al s o
s i mul ta neous l y ene rgi ze the he a t re la y K2 and i ts a s s ocia te d LED. The rel a y K2
wi l l provi de 24V AC fus ed power d i re ctl y to the he at va l ve.

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 7
OPERATION
Cool Start Up
A cal l o n “Y” for cool i n g i ni ti a te s a s eri e s of ch ecks pri or to the s ta rt up of the
compre s s or. The se checks i nclude :
a. Powe r ON ti me r – Compre s s or opera ti on i s de l a ye d for a pproxi ma te l y 5
mi nute s a fte r re stora ti on of p ower. Thi s preve nts al l uni ts from comi ng
on-li ne a t the s a me ti me wh en power i s re stored. I t a l s o pre ve nts
comp re s s or jo l ti ng i n i ns ta nces o f i nte rmi tte nt powe r.
b. An ti-Re cycl e ti mer – There i s a 5-mi nute a nti -recycl e d el ay ti me r tha t
a l l ows th e re fri gera ti on cycl e to a chi eve pres s u re e qu a l iza ti on s o tha t
the compres s or i s unl oade d upon s tart up.
c. Hi gh Pres sure Swi tch – The hi gh re fri ge ra nt p re s s ure s wi tch must be
cl osed pri or to s ta rt up. LED 11 wi l l b e ON. Hi gh pres s ure s wi tch op ens a t
600 ± 10 psi a nd cl os e s at 450 ± 10 ps i.
d. Low Pre s s ure Switch – The l ow pres s ure s witch opera te s pri ma ri l y a s a
l os s of charge protector. I t must be clos e d for compres s or s ta rt up a nd
i ts LED 12 wi l l b e ON. Upon s tart u p, the s i gna l from th e low pres s ure
s wi tch i s i gnored for 5 mi nutes. I n s ome s i tua ti ons, pa rticul a rl y when
the uni t i s col d, th e pre ss ure swi tch wi l l open du ring s tart-up. If the
s wi tch d oes not cl os e wi thi n the 5 mi n ute ignore pe ri od, th e compre s sor
wi l l i mme di a te l y b e turne d off. Low pre s s ure s wi tch opens a t 60 ± 3 psi
a nd cl os e s a t 90 ± 3 ps i .
e. Ai r te mpe ra ture sens or Ta – Sens or Ta wi l l pre ve nt compre s s or s ta rt-up
i f the a i r flowi ng through the uni t i s bel ow 55F. The s e nsor wi ll a l s o
preve nt the compres s or s ta rtup or di sconti nue compre s s or ope ra ti on if
the a i r tempe ra ture i s above 140F a nd wi l l re s e t at 135F. A fl as h code
of 4 wi l l be i ni ti ate d on th e red d i a gnos ti c LED 15.
f. Wa te r te mpera ture s e nsor Tw – Sensor Tw wil l prevent compress or s tart-
up and tri p a n a la rm (a fl a s h code of 3) i f the outgo i ng fl ui d te mpera ture
i s above 125F a nd wi l l re s et the a l a rm a t 120F. The s e ns or wi ll a l s o
tri p a t s ta rtup a nd duri ng ope ra ti on if the wa te r tempe rature i s be l ow
55F a nd wi l l re se t a t 60F.
g. Re fri gera nt tempe ra ture s e ns or Tr – Sens or Tr wi ll pre vent compres s or
s ta rt-up i f the co il te mpe ra ture i s b elow 40F a nd re s e ts a t 65ᵒF. A fl as h
code o f 2 wi l l be i ni ti a ted on th e red di a gnos ti c LED 15.
An y of the a bove fa ul ts wi l l be i n di ca ted vi a the di a gnos ti c LED a nd th e
a ppropri a te di a gnos ti c fl a s h code. Plea s e note the te mpera tures provided
mi gh t va ry b y ±5F.

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 8
OPERATION
Cool Operation
Moni tori ng of th e re fri gera nt cycl e conti nues d uri ng o pe ra ti on of the
comp re s s or. The fol l owing mal functi ons wi ll ca us e the comp re ss or to
s hutdown:
a. If the hea d pre s sure e xce eds the s e t poi nt of the hi gh pre s s ure s wi tch,
the s wi tch wi l l ope n a nd the control bo a rd wi l l te rmi na te compre s s or
opera ti on wi thi n 10 s e cond s . At thi s ti me a fl a s h code of 6 wi l l be
i ni tia te d on the re d d i agnos ti c LED 15. Compre s s or o pe rati on wi l l be
re s to re d i n a ccorda nce wi th the “I ntel l i gent Res e t Al gori th m” (se e
be l ow).
b. If the s uction pres s ure drops be l ow the s e t poi nt of the low pres s ure
s wi tch, the s wi tch wi l l open; i f i t rema i ns o pe n beyond the 5 minute
i gnore pe ri od whi ch i s ini ti a ted upon s ta rt up, compres s or ope ra ti on
wi l l be te rmi na ted wi thi n 10 se con ds. Compres s o r operati on wil l be
re s to re d i n a ccorda nce wi th the “I ntel l i gent Res e t Al gori th m”. A fl a s h
code o f 5 on the re d di agnos ti c LED wi l l b e in i ti a ted a t thi s ti me.
c. Intel l i ge nt Re s et Al gorithm – If a l ow or hi gh pre s sure s wi tch ope ns a nd
re ma i ns open for more tha n 10 mi nute s , a ha rd l ockout wi l l b e i ni ti a ted
a nd the cool i ng mode wi l l be locke d off unti l th e controls a re ma nua ll y
re s et. At the s a me ti me the fa ul t re l ay K3 wil l be se t to a la rm; howe ver,
i f the op en s wi tch cl os es wi thi n 10 mi nutes, a re s ta rt cycle i s i ni ti a te d.
The re s ta rt cycl e begi ns wi th a 10 mi nute del a y a fte r whi ch i f the re i s a
cool ca l l i n pl a ce a nd a ll othe r e na blers a re wi thi n the sta rt para meters ,
the compres s or wi l l a gai n be put i n to o pe rati on. Sh oul d e i the r of the
press ure swi tches ope n a ga i n, the s hutdown p rocedure wi l l cycl e a ga in,
fol l owe d by a resta rt. The i ntel l i ge nt re s e t al go ri thm wi ll a l l o w two
open s wi tch s hutd own s a nd res ta rts wi th i n a 24 hour peri o d - a thi rd
s hutdown wi thi n 24 hours wi l l put the re fri ge ra ti on s ys tem i nto a ful l
a nd ha rd lockout, requiri ng a power down to re s et. I f two or l e ss ope n
s wi tch s hutdowns occur wi th i n a 24 hou r p eri od , the y wi ll be e ra s e d
from me mory a nd wi l l not contri bute to a future hard l ockout. (A ha rd
l ocko ut wil l pre vent compres s or ope ra ti on unti l the contro l s a re
powered down for a t l east 20 seconds a nd the gree n powe r l ight goes
out. A s oft l ockout i s a compres s or s hutdown tha t wi ll be res tore d once
the condi tion ca us i ng the s hutd own returns to norma l .)
d. During compre s s or opera ti on, re fri gera nt tempe rature, s ys te m fl ui d
te mpe ra ture, a nd di s charge a ir tempe ra ture a re continuous l y
moni tored. I f th e refrigerant temperature d rops be l ow 40F, compres s or
opera ti on wi l l be di s a bl e d. After 10 mi nutes , a n au to re set occurs a nd
the compres s or wi ll be e na bl ed a s s oon a s the te mpe ra ture ri se s a bove
65F. Actual compre s s or re s ta rt wi l l be de l aye d a mi ni mum of 5 mi n utes

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 9
OPERATION
by the a n ti-re cycle ti mer. A fl a sh code of 2 wi l l b e i n i ti a ted upon a l ow
refrigera nt te mpera ture s hutdown.
e. If the outgoing system fluid temperature ri s e s a bove 140F, compres s or
opera ti on wi l l be di s a bl e d. The compres s or wi l l be e na bl e d a s s oon as
the tempera ture drops bel ow 120F. The ou tgoi ng s ys te m fl ui d se ns o r i s
mounted on the le a vi ng fl ui d pi pe . Actua l compre ss or res ta rt wi l l b e
de l ayed a mi n i mum of 5 mi n ute s by the a nti -recycl e ti mer. A fl as h code
of 3 wi l l be i ni ti ate d upon a high outgoi n g sys te m fl ui d te mpe ratu re
s hutdown.
f. If the discharge air temperature drops be l ow 40F, compre ss or opera ti on
wi l l be di sa bl e d. The compress or wi ll be e na bl e d a s s oon a s the
te mpe ra ture ri s es a bove 55F. The d i sch a rge a i r tempe rature s ens or i s
mounted on the fa n hous i n g. Actua l compres s or res ta rt wi l l b e de l a yed
a mi ni mum of 5 mi nute s by th e a nti -re cycl e ti mer. A fl a s h code of 4 wi ll
be ini ti a ted upon a l ow d i s charge a i r te mpera ture s h utdown.
g. The condens a te level s ens or is a 100 ohm thermi stor that i s he ated for
15 se conds e very 4 mi nute s ; i ts te mpera ture i s mea s ure d a t th e
be gi n ni ng a nd end of thi s he ati ng cycl e . If the conde ns a te l e vel ri s e s
a bove the s e ns or, i t wi l l n ot wa rm up duri ng th e he a ti ng cycl e , and the
te mp era ture cha nge wi ll be i ns i gni fica nt. It i s thi s l a ck of te mpera ture
cha nge that th e control le r s e es a s a n i mpe ndi n g condens a te ove rfl ow.
When a h igh con de ns a te l e vel i s d ete cte d, comp res s or ope ra ti on i s
i mmedi a tel y te rmi na te d, a nd at the sa me time th e fa n i s s topped fo r 30
s e cond s , and then re s tarte d. At th i s ti me a fl a s h code of 7 wi l l be
i ni tia te d. The 4 mi nute cycl e wi l l co nti nue unti l the cool ing ca l l i s n o
l onge r i n pl a ce . If the condensa te l e ve l drops be l ow the s e ns or,
comp re s s or ope rati on wi l l be re turned to norma l . Ho weve r, i f the
conde ns a te l e ve l s ta ys a bove the s e ns or for more tha n 15 mi nutes , the
fa ult a l a rm wi l l be tri gge re d. Thi s fa ul t s i gna l wi l l a utoma ti ca l ly be
res et once the conde ns ate l eve l goes be l ow the s ens or.
Note: Th e la s t fl as h code wi l l be ma inta i ned i n me mory for one we ek or u ntil the uni t
control s a re powere d d own. The fl a sh code wi l l conti nue unti l the probl e m ha s cleared
a nd the comp re s sor ha s be e n put i nto op era ti on. If a cool i ng cal l i s i n pl a ce , i t mustbe
di s enga ged be fore th e ca u s e of the la s t a l arm s hutdown ca n be i de nti fi e d.
Operation Algorithm
There a re se ve ra l control a l gori thms to preve nt cycl i ng a nd p robl e ma ti c operation.These
a re:
1. Doubl e Cal l – I f th e thermos tat connecti on or s e t up i s i ncorre ct re s ul ti ng i n a
s i mul ta neous ca ll for both he ati ng and cool i ng, the uni t wi l l not ope rate . Thi s

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 10
OPERATION
condi ti on ca n be obs e rve d o n th e thermos tat conne cti on LEDs . (Note : A he a t
pump the rmos ta t ma y caus e thi s s cena ri o).
2. Re vers e Cycl e Ca ll – Poorl y l ocate d a utoma tic cha nge over the rmos ta ts (i e .
the rmos tats mounte d on a wal l oppos i te a di s charge gril l , or a the rmos ta t i n a
doorwa y to ou ts i de) ca n tri gger h ea ting a n d co ol i ng mode cha nge s many ti mes
a n hour. The CGC control l er h as a 10-mi nute a nti -mo de cha nge ti mer whe n
cha ngi ng from cool i ng to he a ting op era ti on. The control le r wi l l not a cce pt a
cha nge i n mo de unti l 10 mi nute s h a ve e l a ps e d s i nce te rmi n a ti on of the
oppos i te ca l l .
Thermostat Connections
The CGC control boa rd ha s bee n des i gned to opera te wi th mos t sta ndard 24V AC
the rmos tats . Thes e thermos tats a re powe re d di rectl y from the CGC boa rd a nd provide
s i gna ls to the a ppropria te te rmi na l s depe ndi ng on the opera ti on a t ha nd - Hea t (W),
Cool (Y), Fan (G) or Aux (A). Whi l e most prese nt-day the rmos ta ts a re compa ti ble withthe
CGC control boa rd, there a re othe rs tha t ma y not work properl y. The foll owi ng shouldbe
che cked for s a ti sfa ctory pe rfo rma nce pri or to i ns tal l a ti on:
1. He at Pump Thermos tat – Some hea t pump units do not have heat rel a ys
(there fore a re not compa ti bl e wi th s ta nda rd the rmos ta ts) a nd re qui re “Hea t
Pump The rmos ta ts ”. Thes e thermos tats ca l l for both hea ti ng a nd cool ing on
one o f the s i gna l wi res . The s e thermos ta ts a re compl e tel y i ncompa ti bl e wi th
CGC’s contro l l er.
2. Me rcury bul b the rmos tat - Thi s type is prob le ma ti c but can be us e d.
Unfortu na te l y, the a nti ci pa tors a re a p robl em. He at a n ti ci pa tors mus t b e i n
s e rie s wi th a h i gh cu rrent rel ay or va lve to functi on, s o do n ot pe rform on a n
e l ectroni c ci rcui t. Thi s wi l l re s ul t i n l arge r tha n norma l tempe rature s wi n gs .
The cool anti ci pator, i f ove rs i ze d, ca n bl e ed e nou gh cu rrent to indi ca te a
cooli ng ca ll e ve n a fte r it ha s be en termi na te d.
3. Ba tte ry powe red the rmos ta ts – The s e the rmos ta ts we re devel ope d a s
re pla ce men ts for ol d mercury bul b the rmos ta ts that ha d 4 wi re co nne cti ons
whil e 24V e l ectroni c th ermos tats re qui re d 5 wi re s. Thes e wi l l work with a CGC
board, a l though CGC does not re comme nd the m. They re qu i re peri odi c ba tte ry
re pla ce men t, which i s some thi ng th at s h oul d b e avoi de d i f poss i b l e.
4. Powe r s teal i ng the rmosta ts – Thi s type of the rmosta t i s el ectroni c a nd wa s
a l s o d evelope d as a re pl a ce me nt for o l d mercury bul b the rmos ta ts . Thes e too
a re probl ema ti c in tha t the y blee d a sma l l amount of curre nt down the s i gn al
wi res a nd thi s may be i nte rpreted a s a s i gna l for he a t or cool .
5. Tri ac s wi tch ed control l ers – Thi s i s a commonl y u se d s witchi ng de vi ce a n d a ll
control l e rs te s te d to date ha ve function ed fl a wl e ss l y. CGC re comme nds th a t

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 11
OPERATION
pri or to i nsta l l a tion of a thi rd pa rty suppl i ed control l e r, it be che cke d for
comp a ti bi li ty. CGC ca n confi rm thi s .
6. Re l ay s wi tche d con trol l ers – Thi s type o f control l e r works we l l wi th CGC
device s .
Shutdown Output
The CGC boa rd has a n opti ona l i n put termi na l s tri p tha t al l ows for two type s of remote
s hutdown. The s e a re: a ) compre s s or s hutdown a nd b) unit s hutdown.
The a dva nta ge of the s e i nputs i s that ma ny uni ts ca n be connecte d in pa rallel and when
powere d by a n i nde pende nt 24V AC s i gna l one or both of the s e a cti ons ca n be
i mpl e me nte d. Common us e s are :
a) Duty cycl i ng for dema nd control
b) Gl o ba l ni ght s e tba ck
c) He ati ng o nl y mode durin g e merge ncy powe r pe ri ods
The CGC controll e r i s a l s o se t up s o thes e s hutdown fun cti ons ca n be i ni ti a te d
i ndivi dua ll y wi th on boa rd 24V powe r. Thi s ca pa bi l i ty a l l ows uni t o r compre s sor
s hutdown ba s e d on a doo r s wi tch, a l i ght swi tch, or occupa ncy s wi tch. A s e pa ra te 24V
power s uppl y i s re qui red i f two or more units a re be i ng shutdown.
Fault Alarm Output
The CGC boa rd i s provi de d wi th a fa ul t a l a rm i ndi ca tor a nd output. Th e fa ul t al a rm
re l ay provides norma l l y ope n and norma l l y cl os e d conta cts for us e i n tra ns mi tti ng
fa ult conditi ons .
NOTE: The fa ul t al a rm i s e ne rgi ze d for NORMAL, a nd de -energi zed for fa ul t. As s uch, i f
the uni t i s not powe red, i f the boa rd fus e i s bl own, or i f the e l ectroni cs a re da ma ged,
a faul t condi ti on wi l l be i ndi cate d.
The fa ul t re l a y i s pa ra l lel e d wi th th e Fa ul t LED whi ch wi ll be ON whe n no fa ul t
condi ti on exi s ts .
Some fa ult co nditi on s incl ude:
a . Ha rd l ockout due to hi gh or l ow pres sure s wi tch bei ng ope n for 10 mi nute s or
l onge r.
b. Ha rd l ockout du e to three h i gh or l ow pre s sure s h utdowns i n a 24 hour p eri od.
c. Hi gh l e vel conde ns a te for a peri od i n e xce ss of 15 mi nu tes .

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 12
COMMISSION & START UP
System Flushing:
Prope r s ys te m cl ea ni ng a n d fl us hi ng i s a n i mportant a s pe ct of the commi s s i oni ng
a nd s ta rt up proce dure for hybrid units . Ens ure the s ys te m ha s be en flus hed properl y.
Thi s prevents foul i ng of the u ni t’s h ea t e xcha nge rs.
NOTE: Hydroni c coi l s a re not 100% d rai na bl e.
System Fluid:
Ens ure that s ys tem wa ter te mpera ture i s withi n a n a ccepta bl e ra nge to fa ci lita te s ta rt
up fo r co oli ng (80-120°F) a nd for he a ti ng (100 – 140°F).
System Water pH:
Sys te m water s houl d have a neutra l pH ba l ance of a p proxi ma tel y 7.5 whi ch wi l l
e xtend the l ife of the hos es , hea t e xcha ngers , a nd other wa ter side a cce s s ori es .
Water Flow Rate:
Op en a l l i sol a ti on va l ves to the un i t. Wi th the uni t i n opera ti on, e ns ure tha t the
e nteri ng and l e a vi ng fl ui d tempe ra ture s a re a ccepta bl e . The re is typi ca l l y a n 8 to 12
de gre e drop or ri se i n temp erature , dependi ng on wh ethe r the uni t i s i n he ati n g or
cooli ng. Unde r e xtre me condi ti on s , sl i ght vari a nces i n the te mpe ra ture ma y be noted .
Freeze Protection from Water System:
Ens ure that fre e ze protecti on is provide d for the outdoo r porti on of the l oo p wa te r
s ys te m. Ina dequa te free ze prote cti on ca n le a d to coi l dama ge.
NOTE: A potenti a l i s s ue ma y a ri s e duri ng cons tructi on where the s ys tem fl ui d l oop is
dra in ed a fter b eing cl e ane d, flus hed, a nd tes te d. Hyb ri d verti cal s ta ck uni ts wi l l not
comp l ete l y dra i n a nd ma y hol d fl ui d i n the conde ns e r or h ea ti ng coi l . Exte nsi ve
da ma ge ma y re s ul t to i nte rna l compone nts i f the sys te m fl ui d fre e ze s a s a res ul t o f
i na dequa te gl ycol b ei ng p re s ent.
Remove Air from System Fluid Loop:

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 13
COMMISSION & START UP
Ai r in the sys te m i mpa i rs uni t ope ra ti on a nd ca n ca us e eros i on i n the pi pi n g.
Clean Unit Filter:
Confi rm tha t the uni t fi lte r that i s be ing us ed i s cl ea n. A cl e a n fi l te r contri bu te s to th e
prope r opera ti on o f the uni t by e ns uri ng that th ere i s a dequa te a i r fl ow a cross th e
coi l.
Fan Rotation:
Ins pe ct the fa n s ecti on to e ns ure that i t i s cl e a n of a n y debri s and that the fan
rotates free l y.
NOTE: Thi s e qui pme nt i s de s i gne d for i n door i ns tal l a ti on ONLY.

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 14
MAINTENANCE
WARNING:
To prevent i nju ry or de ath due to el e ctri ca l sho ck or co ntact wi th movi ng pa rts,
di s abl e the uni t us i n g the di s connect be fore s e rvici ng.
Inspect Filter:
Es tabl i s h a re gula r ma i nte na nce s chedul e . Cl ea n fi l ter fre qu entl y a n d re pl a ce a s
re qui re d. A va cuum ca n be us ed to cl ea n the fi l te r a s we ll a s the s urface of the co i l.
To re move the fi lte r, l i ft i t up and out of th e re ta i ni ng l i p l oca ted towards the bottom
of the u ni t. Re pl ace the ol d fi lte r b y sl i di n g th e top e dge of a new fi l ter up i nto the
ra ck, the n pus hi ng i t i n b ehi nd the reta i n i ng l i p a t th e botto m of the uni t whe re i t wi l l
drop i n to pl a ce .
Check Fan Motors Annually:
Al l CGC Hybri d Hea t Pumps a re pe rmane ntl y l ubri ca te d whe n s hi ppe d from the fa ctory.
Do not oi l o r l ubri ca te the fa n motors.
Visual Inspection:
Vi s ua l l y i ns pe ct uni ts and gi ve s pe ci al a tte nti on to hos e a s s e mbl i e s . Addre ss a ny
s i gns of deteri orati o n or cra ckin g a nd re pa ir l e a ks i mme di a te l y.
Amperage Check on Compressor and Fan Motor:
Check tha t a l l e l ectri ca l connects a re ti ght. Curre nt dra w on thi s e qui pme nt s hou l d
not e xcee d normal ful l loa d or ra te d l oa d a mps by more tha n 10 pe rcent of the va l ue s
noted o n the uni t na mepl a te .
Safety Control Reset:
Al l CGC hybri d hea t pumps i nclu de h igh a nd l ow pre s s u re s wi tche s to preve nt the uni t
from operati ng under a bno rmal a nd potenti a l l y harmful condi tions . If mul ti pl e
press ure al a rms occur wi th i n a 24-hour pe riod, the compres s o r opera ti on wi ll b e
pe rma ne ntl y l ocke d out unti l the unit i s re se t or powe r i s di s conne cted for 20
s e conds .

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 15
MAINTENANCE
NOTE: If the hea t pump mus t be res e t more th a n twi ce , che ck the uni t fo r a dirty a i r
fi l ter, a bnorma l ente ri ng/l ea ving wa te r tempera ture , i nade quate wa ter fl ow, or
i nterna l ma l functi ons tha t may b e caus i n g hi gh o r l ow pre s s ure cond i ti ons . If the uni t
conti nue s to tri gge r the a l a rm, conta ct a trai ned s ervi ce te chni ci a n a nd e ns ure the
probl e ms are re sol ved be fo re conti nui ng use of the uni t.

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 16
MAINTENANCE – STANDARD WIRING DIAGRAM

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 17
DETAILS
SpaceKeeper Console Dimensional Diagram: Complete Unit
SpaceKeeper Console Dimensional Diagram: Chassis

Space Ke e pe r Cons ol e (SKC) – I ns ta l l ati on Opera ti on Ma i nte na nce Ma nua l 18
DETAILS
Dimensional Diagram: Piping and Receptacle Plate
Note: The fresh air damper mechanism is optional